octave-nkf: libinterp/parse-tree/lex.ll annotate

annotate libinterp/parse-tree/lex.ll @ 16228:e19b1632d7c1

revamp most comment handling * comment-list.h (octave_comment_elt::comment_type): New value, full_line. * lex.h (lexical_feedback::comment_text): New member variable. (lexical_feedback::finish_comment): New function. (octave_lexer::grab_block_comment, octave_lexer::grab_comment_block, octave_lexer::process_comment): Delete. * lex.ll (BLOCK_COMMENT_START, LINE_COMMENT_START): New exclusive start states. (ANY_INCLUDING_NL): New pattern. (<INPUT_FILE_START>{ANY_INCLUDING_NL}): Use it instead of ".". (^{S}*{CCHAR}\{{S}*{NL}, <BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL}, <BLOCK_COMMENT_START>^{S}*{CCHAR}\}{S}*{NL}, <BLOCK_COMMENT_START>.*{NL}, {S}*{CCHAR}.*{NL}, <LINE_COMMENT_START>{S}*{CCHAR}.*{NL}, <LINE_COMMENT_START>{ANY_INCLUDING_NL}): New patterns and rules for handling comments. ({CCHAR}, ^{S}*{CCHAR}\{{S}*{NL}): Delete old rules for comments. (display_start_state): Also handle BLOCK_COMMENT_START and LINE_COMMENT_START.

author	John W. Eaton <jwe@octave.org>
date	Fri, 08 Mar 2013 17:13:54 -0500
parents	4a848eb52de2
children	7b7b1e4968e8

rev	line source
1994 c2d20f365b84 [project @ 1996-03-03 01:19:32 by jwe] jwe parents: 1884 diff changeset	1 /*
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2
14138 72c96de7a403 maint: update copyright notices for 2012 John W. Eaton <jwe@octave.org> parents: 14074 diff changeset	3 Copyright (C) 1993-2012 John W. Eaton
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	4
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	5 This file is part of Octave.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	6
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	7 Octave is free software; you can redistribute it and/or modify it
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	8 under the terms of the GNU General Public License as published by the
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6547 diff changeset	9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6547 diff changeset	10 option) any later version.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	11
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	12 Octave is distributed in the hope that it will be useful, but WITHOUT
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	15 for more details.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	16
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	17 You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6547 diff changeset	18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6547 diff changeset	19 <http://www.gnu.org/licenses/>.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	20
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	21 */
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	22
16150 891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	23 /*
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	24 We are using the pure parser interface and the reentrant lexer
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	25 interface but the Octave parser and lexer are NOT properly
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	26 reentrant because both still use many global variables. It should be
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	27 safe to create a parser object and call it while anotehr parser
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	28 object is active (to parse a callback function while the main
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	29 interactive parser is waiting for input, for example) if you take
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	30 care to properly save and restore (typically with an unwind_protect
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	31 object) relevant global values before and after the nested call.
891a2a4df71f * lex.ll: Use C-style comments in preamble. John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	32 */
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	33
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	34 %option prefix = "octave_"
16146 b6050fc0a2d9 use %option noyywrap John W. Eaton <jwe@octave.org> parents: 16139 diff changeset	35 %option noyywrap
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	36 %option reentrant
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	37 %option bison-bridge
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	38
10019 7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	39 %top {
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	40 #ifdef HAVE_CONFIG_H
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	41 #include <config.h>
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	42 #endif
10411 479cc8a0a846 use gnulib namespace John W. Eaton <jwe@octave.org> parents: 10315 diff changeset	43
10019 7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	44 }
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	45
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	46 %s COMMAND_START
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	47 %s MATRIX_START
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	48
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	49 %x INPUT_FILE_START
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	50
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	51 %x BLOCK_COMMENT_START
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	52 %x LINE_COMMENT_START
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	53
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	54 %{
240 a99f28f5e351 [project @ 1993-11-30 20:24:36 by jwe] jwe parents: 216 diff changeset	55
1341 e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	56 #include <cctype>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	57 #include <cstring>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	58
8950 d865363208d6 include <iosfwd> instead of <iostream> in header files John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	59 #include <iostream>
8001 ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	60 #include <set>
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	61 #include <sstream>
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	62 #include <string>
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	63 #include <stack>
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	64
4093 5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	65 #include <sys/types.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	66 #include <unistd.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	67
2926 66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe] jwe parents: 2900 diff changeset	68 #include "cmd-edit.h"
4153 6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe] jwe parents: 4131 diff changeset	69 #include "quit.h"
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	70 #include "lo-mappers.h"
2926 66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe] jwe parents: 2900 diff changeset	71
16154 aa5e1e8dce66 * lex.ll: Change y.tab.h to oct-parse.h in comment. John W. Eaton <jwe@octave.org> parents: 16150 diff changeset	72 // These would be alphabetical, but oct-parse.h must be included before
aa5e1e8dce66 * lex.ll: Change y.tab.h to oct-parse.h in comment. John W. Eaton <jwe@octave.org> parents: 16150 diff changeset	73 // oct-gperf.h and oct-parse.h must be included after token.h and the tree
aa5e1e8dce66 * lex.ll: Change y.tab.h to oct-parse.h in comment. John W. Eaton <jwe@octave.org> parents: 16150 diff changeset	74 // class declarations. We can't include oct-parse.h in oct-gperf.h
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	75 // because it may not be protected to allow it to be included multiple
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	76 // times.
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	77
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	78 #include "Cell.h"
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	79 #include "comment-list.h"
2181 138b3c98dc85 [project @ 1996-05-13 18:02:31 by jwe] jwe parents: 2167 diff changeset	80 #include "defun.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	81 #include "error.h"
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	82 #include "gripes.h"
1351 8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	83 #include "input.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	84 #include "lex.h"
2891 1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	85 #include "ov.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	86 #include "parse.h"
14329 8d1ae996c122 also save and restore symbol table context in parser (bug #35448) John W. Eaton <jwe@octave.org> parents: 14294 diff changeset	87 #include "parse-private.h"
2987 ae20b3f37f5e [project @ 1997-05-16 07:05:15 by jwe] jwe parents: 2982 diff changeset	88 #include "pt-all.h"
2891 1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	89 #include "symtab.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	90 #include "token.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	91 #include "toplev.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	92 #include "utils.h"
94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	93 #include "variables.h"
9794 0d4613a736e9 convert build system to use automake and libtool John W. Eaton <jwe@octave.org> parents: 9476 diff changeset	94 #include <oct-parse.h>
2492 06595bc7f2d0 [project @ 1996-11-09 00:13:50 by jwe] jwe parents: 2375 diff changeset	95 #include <oct-gperf.h>
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	96
10426 4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	97 #if defined (GNULIB_NAMESPACE)
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	98 // Calls to the following functions appear in the generated output from
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	99 // flex without the namespace tag. Redefine them so we will use them
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	100 // via the gnulib namespace.
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	101 #define fprintf GNULIB_NAMESPACE::fprintf
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	102 #define fwrite GNULIB_NAMESPACE::fwrite
14161 f4b5a2f899d3 check in change accidentally omitted from previuos changeset John W. Eaton <jwe@octave.org> parents: 14138 diff changeset	103 #define isatty GNULIB_NAMESPACE::isatty
10426 4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	104 #define malloc GNULIB_NAMESPACE::malloc
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	105 #define realloc GNULIB_NAMESPACE::realloc
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	106 #endif
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	107
2716 2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	108 #if ! (defined (FLEX_SCANNER) \
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	109 && defined (YY_FLEX_MAJOR_VERSION) && YY_FLEX_MAJOR_VERSION >= 2 \
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	110 && defined (YY_FLEX_MINOR_VERSION) && YY_FLEX_MINOR_VERSION >= 5)
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	111 #error lex.l requires flex version 2.5.4 or later
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	112 #endif
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	113
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	114 #define YY_EXTRA_TYPE octave_lexer *
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	115 #define curr_lexer yyextra
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	116
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	117 // Arrange to get input via readline.
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	118
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	119 #ifdef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	120 #undef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	121 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	122 #define YY_INPUT(buf, result, max_size) \
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	123 result = curr_lexer->read (buf, max_size)
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	124
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	125 // Try to avoid crashing out completely on fatal scanner errors.
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	126
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	127 #ifdef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	128 #undef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	129 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	130 #define YY_FATAL_ERROR(msg) \
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	131 (yyget_extra (yyscanner))->fatal_error (msg)
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	132
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	133 #define DISPLAY_TOK_AND_RETURN(tok) \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	134 do \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	135 { \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	136 int tok_val = tok; \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	137 if (Vdisplay_tokens) \
16118 f8e463523229 move more static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16117 diff changeset	138 curr_lexer->display_token (tok_val); \
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	139 if (lexer_debug_flag) \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	140 { \
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	141 std::cerr << "R: "; \
16118 f8e463523229 move more static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16117 diff changeset	142 curr_lexer->display_token (tok_val); \
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	143 std::cerr << std::endl; \
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	144 } \
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	145 return tok_val; \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	146 } \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	147 while (0)
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	148
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	149 #define COUNT_TOK_AND_RETURN(tok) \
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	150 do \
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	151 { \
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	152 if (tok != '\n') \
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	153 { \
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	154 Vtoken_count++; \
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	155 curr_lexer->token_count++; \
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	156 } \
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	157 DISPLAY_TOK_AND_RETURN (tok); \
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	158 } \
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	159 while (0)
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	160
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	161 #define TOK_RETURN(tok) \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	162 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	163 { \
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	164 curr_lexer->current_input_column += yyleng; \
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	165 curr_lexer->quote_is_transpose = false; \
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	166 curr_lexer->convert_spaces_to_comma = true; \
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	167 COUNT_TOK_AND_RETURN (tok); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	168 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	169 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	170
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	171 #define TOK_PUSH_AND_RETURN(name, tok) \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	172 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	173 { \
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	174 curr_lexer->push_token \
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	175 (new token (name, curr_lexer->input_line_number, \
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	176 curr_lexer->current_input_column)); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	177 TOK_RETURN (tok); \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	178 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	179 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	180
12627 002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	181 #define BIN_OP_RETURN_INTERNAL(tok, convert, bos, qit) \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	182 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	183 { \
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	184 curr_lexer->push_token \
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	185 (new token (curr_lexer->input_line_number, \
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	186 curr_lexer->current_input_column)); \
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	187 curr_lexer->current_input_column += yyleng; \
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	188 curr_lexer->quote_is_transpose = qit; \
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	189 curr_lexer->convert_spaces_to_comma = convert; \
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	190 curr_lexer->looking_for_object_index = false; \
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	191 curr_lexer->at_beginning_of_statement = bos; \
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	192 COUNT_TOK_AND_RETURN (tok); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	193 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	194 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	195
12627 002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	196 #define XBIN_OP_RETURN_INTERNAL(tok, convert, bos, qit) \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	197 do \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	198 { \
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	199 curr_lexer->gripe_matlab_incompatible_operator (yytext); \
12627 002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	200 BIN_OP_RETURN_INTERNAL (tok, convert, bos, qit); \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	201 } \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	202 while (0)
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	203
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	204 #define BIN_OP_RETURN(tok, convert, bos) \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	205 do \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	206 { \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	207 BIN_OP_RETURN_INTERNAL (tok, convert, bos, false); \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	208 } \
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	209 while (0)
002948ae5bc0 fix precedence level of transpose operators (bug #32533) John W. Eaton <jwe@octave.org> parents: 12174 diff changeset	210
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	211 #define XBIN_OP_RETURN(tok, convert, bos) \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	212 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	213 { \
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	214 curr_lexer->gripe_matlab_incompatible_operator (yytext); \
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	215 BIN_OP_RETURN (tok, convert, bos); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	216 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	217 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	218
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	219 #define LEXER_DEBUG(pattern) \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	220 do \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	221 { \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	222 if (lexer_debug_flag) \
16118 f8e463523229 move more static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16117 diff changeset	223 curr_lexer->lexer_debug (pattern, yytext); \
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	224 } \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	225 while (0)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	226
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	227 static bool Vdisplay_tokens = false;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	228
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	229 static unsigned int Vtoken_count = 0;
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	230
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	231 // Internal variable for lexer debugging state.
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	232 static bool lexer_debug_flag = false;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	233
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	234 // Forward declarations for functions defined at the bottom of this
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	235 // file that are needed inside the lexer actions.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	236
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	237 static std::string strip_trailing_whitespace (char *s);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	238
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	239 %}
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	240
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	241 D [0-9]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	242 S [ \t]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	243 NL ((\n)\|(\r)\|(\r\n))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	244 SNL ({S}\|{NL})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	245 EL (\.\.\.)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	246 BS (\\)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	247 CONT ({EL}\|{BS})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	248 Im [iIjJ]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	249 CCHAR [#%]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	250 COMMENT ({CCHAR}.*{NL})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	251 SNLCMT ({SNL}\|{COMMENT})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	252 NOT ((\~)\|(\!))
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	253 POW ((\\)\|(\^))
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	254 EPOW (\.{POW})
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	255 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	256 EXPON ([DdEe][+-]?{D}+)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	257 NUMBER (({D}+\.?{D}*{EXPON}?)\|(\.{D}+{EXPON}?)\|(0[xX][0-9a-fA-F]+))
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	258
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	259 ANY_INCLUDING_NL (.\|{NL})
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	260
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	261 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	262
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	263 %{
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	264 // Make script and function files start with a bogus token. This makes
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	265 // the parser go down a special path.
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	266 %}
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	267
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	268 <INPUT_FILE_START>{ANY_INCLUDING_NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	269 LEXER_DEBUG ("<INPUT_FILE_START>{ANY_INCLUDING_NL}");
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	270
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	271 curr_lexer->xunput (yytext[0]);
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	272
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	273 // May be reset later if we see "function" or "classdef" appears
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	274 // as the first token.
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	275 curr_lexer->reading_script_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	276
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	277 curr_lexer->pop_start_state ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	278
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	279 DISPLAY_TOK_AND_RETURN (INPUT_FILE);
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	280 }
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	281
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	282 %{
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	283 // Help and other command-style functions.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	284 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	285
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	286 <COMMAND_START>{NL} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	287 LEXER_DEBUG ("<COMMAND_START>{NL}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	288
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	289 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	290 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	291
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	292 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	293 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	294 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	295 curr_lexer->at_beginning_of_statement = true;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	296
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	297 curr_lexer->pop_start_state ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	298
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	299 COUNT_TOK_AND_RETURN ('\n');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	300 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	301
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	302 <COMMAND_START>[\;\,] {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	303 LEXER_DEBUG ("<COMMAND_START>[\\;\\,]");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	304
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	305 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	306 curr_lexer->at_beginning_of_statement = true;
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	307
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	308 curr_lexer->pop_start_state ();
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	309
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	310 if (strcmp (yytext, ",") == 0)
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	311 TOK_RETURN (',');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	312 else
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	313 TOK_RETURN (';');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	314 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	315
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	316 <COMMAND_START>[\"\'] {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	317 LEXER_DEBUG ("<COMMAND_START>[\\\"\\']");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	318
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	319 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	320
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	321 curr_lexer->current_input_column++;
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	322 int tok = curr_lexer->handle_string (yytext[0]);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	323
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	324 COUNT_TOK_AND_RETURN (tok);
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	325 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	326
4923 b11223097ad4 [project @ 2004-08-02 16:33:11 by jwe] jwe parents: 4910 diff changeset	327 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	328 LEXER_DEBUG ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	329
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	330 std::string tok = strip_trailing_whitespace (yytext);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	331
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	332 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	333 curr_lexer->at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	334
5279 bd32f770c09a [project @ 2005-04-12 21:55:31 by jwe] jwe parents: 5225 diff changeset	335 TOK_PUSH_AND_RETURN (tok, SQ_STRING);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	336 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	337
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	338 %{
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	339 // For this and the next two rules, we're looking at ']', and we
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	340 // need to know if the next token is '=' or '=='.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	341 //
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	342 // It would have been so much easier if the delimiters were simply
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	343 // different for the expression on the left hand side of the equals
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	344 // operator.
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	345 //
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	346 // It's also a pain in the ass to decide whether to insert a comma
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	347 // after seeing a ']' character...
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	348
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	349 // FIXME -- we need to handle block comments here.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	350 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	351
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	352 <MATRIX_START>{SNLCMT}\]{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	353 LEXER_DEBUG ("<MATRIX_START>{SNLCMT}\\]{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	354
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	355 curr_lexer->scan_for_comments (yytext);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	356 curr_lexer->fixup_column_count (yytext);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	357
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	358 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	359
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	360 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	361 curr_lexer->at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	362
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	363 int c = yytext[yyleng-1];
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	364 bool cont_is_spc = (curr_lexer->eat_continuation () != octave_lexer::NO_WHITESPACE);
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	365 bool spc_gobbled = (cont_is_spc \|\| c == ' ' \|\| c == '\t');
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	366 int tok_to_return = curr_lexer->handle_close_bracket (spc_gobbled, ']');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	367
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	368 if (spc_gobbled)
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	369 curr_lexer->xunput (' ');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	370
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	371 COUNT_TOK_AND_RETURN (tok_to_return);
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	372 }
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	373
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	374 %{
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	375 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	376 %}
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	377
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	378 <MATRIX_START>{SNLCMT}\}{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	379 LEXER_DEBUG ("<MATRIX_START>{SNLCMT}\\}{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	380
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	381 curr_lexer->scan_for_comments (yytext);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	382 curr_lexer->fixup_column_count (yytext);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	383
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	384 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	385
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	386 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	387 curr_lexer->at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	388
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	389 int c = yytext[yyleng-1];
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	390 bool cont_is_spc = (curr_lexer->eat_continuation () != octave_lexer::NO_WHITESPACE);
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	391 bool spc_gobbled = (cont_is_spc \|\| c == ' ' \|\| c == '\t');
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	392 int tok_to_return = curr_lexer->handle_close_bracket (spc_gobbled, '}');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	393
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	394 if (spc_gobbled)
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	395 curr_lexer->xunput (' ');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	396
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	397 COUNT_TOK_AND_RETURN (tok_to_return);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	398 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	399
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	400 %{
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	401 // Commas are element separators in matrix constants. If we don't
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	402 // check for continuations here we can end up inserting too many
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	403 // commas.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	404 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	405
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	406 <MATRIX_START>{S}\,{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	407 LEXER_DEBUG ("<MATRIX_START>{S}\\,{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	408
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	409 curr_lexer->current_input_column += yyleng;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	410
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	411 int tmp = curr_lexer->eat_continuation ();
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	412
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	413 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	414 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	415 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	416 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	417
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	418 if (! curr_lexer->looking_at_object_index.front ())
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	419 {
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	420 if ((tmp & octave_lexer::NEWLINE) == octave_lexer::NEWLINE)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	421 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	422 curr_lexer->maybe_warn_separator_insert (';');
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	423
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	424 curr_lexer->xunput (';');
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	425 }
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	426 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	427
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	428 COUNT_TOK_AND_RETURN (',');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	429 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	430
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	431 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	432 // In some cases, spaces in matrix constants can turn into commas.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	433 // If commas are required, spaces are not important in matrix
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	434 // constants so we just eat them. If we don't check for continuations
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	435 // here we can end up inserting too many commas.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	436 %}
430 8464d5778a09 [project @ 1994-05-25 08:33:54 by jwe] jwe parents: 428 diff changeset	437
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	438 <MATRIX_START>{S}+ {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	439 LEXER_DEBUG ("<MATRIX_START>{S}+");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	440
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	441 curr_lexer->current_input_column += yyleng;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	442
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	443 curr_lexer->at_beginning_of_statement = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	444
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	445 int tmp = curr_lexer->eat_continuation ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	446
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	447 if (! curr_lexer->looking_at_object_index.front ())
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	448 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	449 bool bin_op = curr_lexer->next_token_is_bin_op (true);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	450 bool postfix_un_op = curr_lexer->next_token_is_postfix_unary_op (true);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	451 bool sep_op = curr_lexer->next_token_is_sep_op ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	452
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	453 if (! (postfix_un_op \|\| bin_op \|\| sep_op)
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	454 && curr_lexer->nesting_level.is_bracket_or_brace ()
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	455 && curr_lexer->convert_spaces_to_comma)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	456 {
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	457 if ((tmp & octave_lexer::NEWLINE) == octave_lexer::NEWLINE)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	458 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	459 curr_lexer->maybe_warn_separator_insert (';');
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	460
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	461 curr_lexer->xunput (';');
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	462 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	463
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	464 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	465 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	466 curr_lexer->looking_for_object_index = false;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	467
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	468 curr_lexer->maybe_warn_separator_insert (',');
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	469
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	470 COUNT_TOK_AND_RETURN (',');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	471 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	472 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	473 }
430 8464d5778a09 [project @ 1994-05-25 08:33:54 by jwe] jwe parents: 428 diff changeset	474
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	475 %{
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	476 // Semicolons are handled as row seprators in matrix constants. If we
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	477 // don't eat whitespace here we can end up inserting too many
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	478 // semicolons.
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	479
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	480 // FIXME -- we need to handle block comments here.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	481 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	482
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	483 <MATRIX_START>{SNLCMT};{SNLCMT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	484 LEXER_DEBUG ("<MATRIX_START>{SNLCMT};{SNLCMT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	485
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	486 curr_lexer->scan_for_comments (yytext);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	487 curr_lexer->fixup_column_count (yytext);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	488 curr_lexer->eat_whitespace ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	489
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	490 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	491 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	492 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	493 curr_lexer->at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	494
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	495 COUNT_TOK_AND_RETURN (';');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	496 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	497
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	498 %{
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	499 // In some cases, new lines can also become row separators. If we
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	500 // don't eat whitespace here we can end up inserting too many
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	501 // semicolons.
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	502
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	503 // FIXME -- we need to handle block comments here.
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	504 %}
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	505
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	506 <MATRIX_START>{S}{COMMENT}{SNLCMT} \|
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	507 <MATRIX_START>{S}{NL}{SNLCMT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	508 LEXER_DEBUG ("<MATRIX_START>{S}{COMMENT}{SNLCMT}\|<MATRIX_START>{S}{NL}{SNLCMT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	509
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	510 curr_lexer->scan_for_comments (yytext);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	511 curr_lexer->fixup_column_count (yytext);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	512 curr_lexer->eat_whitespace ();
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	513
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	514 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	515 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	516 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	517
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	518 if (curr_lexer->nesting_level.none ())
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	519 return LEXICAL_ERROR;
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	520
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	521 if (! curr_lexer->looking_at_object_index.front ()
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	522 && curr_lexer->nesting_level.is_bracket_or_brace ())
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	523 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	524 curr_lexer->maybe_warn_separator_insert (';');
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	525
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	526 COUNT_TOK_AND_RETURN (';');
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	527 }
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	528 }
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	529
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	530 \[{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	531 LEXER_DEBUG ("\\[{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	532
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	533 curr_lexer->nesting_level.bracket ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	534
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	535 curr_lexer->looking_at_object_index.push_front (false);
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	536
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	537 curr_lexer->current_input_column += yyleng;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	538 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	539 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	540 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	541 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	542
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	543 if (curr_lexer->defining_func
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	544 && ! curr_lexer->parsed_function_name.top ())
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	545 curr_lexer->looking_at_return_list = true;
5615 d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	546 else
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	547 curr_lexer->looking_at_matrix_or_assign_lhs = true;
5615 d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	548
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	549 curr_lexer->decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	550 curr_lexer->eat_whitespace ();
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	551
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	552 curr_lexer->bracketflag++;
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	553
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	554 curr_lexer->push_start_state (MATRIX_START);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	555
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	556 COUNT_TOK_AND_RETURN ('[');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	557 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	558
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	559 \] {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	560 LEXER_DEBUG ("\\]");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	561
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	562 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	563
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	564 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	565
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	566 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	567 curr_lexer->at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	568
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	569 TOK_RETURN (']');
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	570 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	571
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	572 %{
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	573 // Gobble comments.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	574 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	575
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	576 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	577 // Start of a block comment. If the comment marker appears immediately
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	578 // after a block of full-line comments, finish the full line comment
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	579 // block.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	580 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	581
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	582 ^{S}{CCHAR}\{{S}{NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	583 LEXER_DEBUG ("^{S}{CCHAR}\{{S}{NL}");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	584
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	585 int tok = 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	586
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	587 if (curr_lexer->start_state () == LINE_COMMENT_START)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	588 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	589 if (! curr_lexer->comment_text.empty ())
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	590 tok = curr_lexer->finish_comment (octave_comment_elt::full_line);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	591
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	592 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	593 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	594
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	595 curr_lexer->push_start_state (BLOCK_COMMENT_START);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	596
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	597 yyless (0);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	598
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	599 if (tok > 0)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	600 COUNT_TOK_AND_RETURN (tok);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	601 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	602
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	603 <BLOCK_COMMENT_START>^{S}{CCHAR}\{{S}{NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	604 LEXER_DEBUG ("<BLOCK_COMMENT_START>^{S}{CCHAR}\{{S}{NL}");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	605
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	606 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	607 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	608
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	609 if (curr_lexer->block_comment_nesting_level)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	610 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	611
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	612 curr_lexer->block_comment_nesting_level++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	613 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	614
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	615 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	616 // End of a block comment. If this block comment is nested inside
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	617 // another, wait for the outermost block comment block to be closed
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	618 // before storing the comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	619 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	620
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	621 <BLOCK_COMMENT_START>^{S}{CCHAR}\}{S}{NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	622 LEXER_DEBUG ("<BLOCK_COMMENT_START>^{S}{CCHAR}\}{S}{NL}");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	623
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	624 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	625 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	626
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	627 int tok = 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	628
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	629 if (curr_lexer->block_comment_nesting_level > 1)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	630 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	631 else
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	632 tok = curr_lexer->finish_comment (octave_comment_elt::block);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	633
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	634 curr_lexer->block_comment_nesting_level--;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	635 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	636
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	637 if (tok > 0)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	638 COUNT_TOK_AND_RETURN (tok);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	639 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	640
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	641 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	642 // Body of a block comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	643 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	644
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	645 <BLOCK_COMMENT_START>.*{NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	646 LEXER_DEBUG ("<BLOCK_COMMENT_START>.*{NL}");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	647
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	648 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	649 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	650 curr_lexer->comment_text += yytext;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	651 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	652
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	653 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	654 // Full-line or end-of-line comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	655 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	656
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	657 {S}{CCHAR}.{NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	658 LEXER_DEBUG ("{S}{CCHAR}.{NL}");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	659
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	660 curr_lexer->push_start_state (LINE_COMMENT_START);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	661 yyless (0);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	662 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	663
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	664 <LINE_COMMENT_START>{S}{CCHAR}.{NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	665 LEXER_DEBUG ("<LINE_COMMENT_START>{S}{CCHAR}.{NL}");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	666
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	667 bool full_line_comment = curr_lexer->current_input_column == 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	668 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	669 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	670
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	671 size_t len = yyleng;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	672 size_t i = 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	673 while (i < len)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	674 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	675 char c = yytext[i];
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	676 if (c == '#' \|\| c == '%' \|\| c == ' ' \|\| c == '\t')
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	677 i++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	678 else
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	679 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	680 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	681
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	682 curr_lexer->comment_text += &yytext[i];
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	683
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	684 int tok = 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	685
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	686 if (! full_line_comment)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	687 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	688 tok = curr_lexer->finish_comment (octave_comment_elt::end_of_line);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	689
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	690 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	691
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	692 if (curr_lexer->start_state () == COMMAND_START)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	693 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	694 // Allow the actions for the end of a COMMAND line to be
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	695 // executed next.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	696
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	697 tok = 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	698 curr_lexer->xunput ('\n');
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	699 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	700 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	701
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	702 if (tok > 0)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	703 COUNT_TOK_AND_RETURN (tok);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	704 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	705
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	706 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	707 // End of a block of full-line comments.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	708 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	709
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	710 <LINE_COMMENT_START>{ANY_INCLUDING_NL} {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	711 LEXER_DEBUG ("<LINE_COMMENT_START>{ANY_INCLUDING_NL}");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	712
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	713 curr_lexer->xunput (yytext[0]);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	714
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	715 int tok = curr_lexer->finish_comment (octave_comment_elt::full_line);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	716
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	717 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	718
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	719 if (tok > 0)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	720 COUNT_TOK_AND_RETURN (tok);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	721 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	722
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	723 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	724 // Imaginary numbers.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	725 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	726
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	727 {NUMBER}{Im} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	728 LEXER_DEBUG ("{NUMBER}{Im}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	729
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	730 curr_lexer->handle_number ();
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	731 COUNT_TOK_AND_RETURN (IMAG_NUM);
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	732 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	733
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	734 %{
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	735 // Real numbers. Don't grab the '.' part of a dot operator as part of
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	736 // the constant.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	737 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	738
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	739 {D}+/\.[\*/\\^\'] \|
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	740 {NUMBER} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	741 LEXER_DEBUG ("{D}+/\\.[\\*/\\^\\']\|{NUMBER}");
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	742 curr_lexer->handle_number ();
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	743 COUNT_TOK_AND_RETURN (NUM);
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	744 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	745
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	746 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	747 // Eat whitespace. Whitespace inside matrix constants is handled by
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	748 // the <MATRIX_START> start state code above.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	749 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	750
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	751 {S}* {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	752 curr_lexer->current_input_column += yyleng;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	753 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	754
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	755 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	756 // Continuation lines. Allow comments after continuations.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	757 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	758
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	759 {CONT}{S}*{NL} \|
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	760 {CONT}{S}*{COMMENT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	761 LEXER_DEBUG ("{CONT}{S}{NL}\|{CONT}{S}{COMMENT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	762
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	763 if (yytext[0] == '\\')
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	764 curr_lexer->gripe_matlab_incompatible_continuation ();
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	765 curr_lexer->scan_for_comments (yytext);
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	766 curr_lexer->decrement_promptflag ();
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	767 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	768 curr_lexer->current_input_column = 1;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	769 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	770
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	771 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	772 // End of file.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	773 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	774
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	775 <<EOF>> {
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	776 return curr_lexer->handle_end_of_input ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	777 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	778
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	779 %{
970 9382316a8a01 [project @ 1994-12-12 06:03:34 by jwe] jwe parents: 969 diff changeset	780 // Identifiers. Truncate the token at the first space or tab but
9382316a8a01 [project @ 1994-12-12 06:03:34 by jwe] jwe parents: 969 diff changeset	781 // don't write directly on yytext.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	782 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	783
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	784 {IDENT}{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	785 LEXER_DEBUG ("{IDENT}{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	786
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	787 int id_tok = curr_lexer->handle_identifier ();
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	788
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	789 if (id_tok >= 0)
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	790 COUNT_TOK_AND_RETURN (id_tok);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	791 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	792
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	793 %{
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	794 // Superclass method identifiers.
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	795 %}
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	796
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	797 {IDENT}@{IDENT}{S}* \|
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	798 {IDENT}@{IDENT}.{IDENT}{S}* {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	799 LEXER_DEBUG ("{IDENT}@{IDENT}{S}\|{IDENT}@{IDENT}.{IDENT}{S}");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	800
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	801 int id_tok = curr_lexer->handle_superclass_identifier ();
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	802
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	803 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	804 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	805 curr_lexer->looking_for_object_index = true;
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	806
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	807 COUNT_TOK_AND_RETURN (SUPERCLASSREF);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	808 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	809 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	810
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	811 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	812 // Metaclass query
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	813 %}
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	814
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	815 \?{IDENT}{S}* \|
14638 5b0872b5b234 fix missing backslash quoting in lexer rules John W. Eaton <jwe@octave.org> parents: 14510 diff changeset	816 \?{IDENT}\.{IDENT}{S}* {
5b0872b5b234 fix missing backslash quoting in lexer rules John W. Eaton <jwe@octave.org> parents: 14510 diff changeset	817 LEXER_DEBUG ("\\?{IDENT}{S}\|\\?{IDENT}\\.{IDENT}{S}");
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	818
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	819 int id_tok = curr_lexer->handle_meta_identifier ();
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	820
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	821 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	822 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	823 curr_lexer->looking_for_object_index = true;
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	824
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	825 COUNT_TOK_AND_RETURN (METAQUERY);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	826 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	827 }
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	828
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	829 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	830 // Function handles and superclass references
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	831 %}
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	832
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	833 "@" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	834 LEXER_DEBUG ("@");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	835
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	836 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	837
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	838 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	839 curr_lexer->convert_spaces_to_comma = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	840 curr_lexer->looking_at_function_handle++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	841 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	842 curr_lexer->at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	843
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	844 COUNT_TOK_AND_RETURN ('@');
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	845
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	846 }
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	847
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	848 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	849 // A new line character. New line characters inside matrix constants
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	850 // are handled by the <MATRIX_START> start state code above. If closest
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	851 // nesting is inside parentheses, don't return a row separator.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	852 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	853
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	854 {NL} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	855 LEXER_DEBUG ("{NL}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	856
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	857 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	858 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	859
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	860 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	861 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	862
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	863 if (curr_lexer->nesting_level.none ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	864 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	865 curr_lexer->at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	866 COUNT_TOK_AND_RETURN ('\n');
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	867 }
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	868 else if (curr_lexer->nesting_level.is_paren ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	869 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	870 curr_lexer->at_beginning_of_statement = false;
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	871 curr_lexer->gripe_matlab_incompatible ("bare newline inside parentheses");
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	872 }
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	873 else if (curr_lexer->nesting_level.is_bracket_or_brace ())
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	874 return LEXICAL_ERROR;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	875 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	876
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	877 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	878 // Single quote can either be the beginning of a string or a transpose
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	879 // operator.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	880 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	881
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	882 "'" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	883 LEXER_DEBUG ("'");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	884
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	885 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	886 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	887
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	888 if (curr_lexer->quote_is_transpose)
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	889 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	890 curr_lexer->do_comma_insert_check ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	891 COUNT_TOK_AND_RETURN (QUOTE);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	892 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	893 else
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	894 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	895 int tok = curr_lexer->handle_string ('\'');
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	896 COUNT_TOK_AND_RETURN (tok);
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	897 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	898 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	899
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	900 %{
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	901 // Double quotes always begin strings.
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	902 %}
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	903
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	904 \" {
14642 6edd02858516 lex.ll: fix think-o in previous change John W. Eaton <jwe@octave.org> parents: 14638 diff changeset	905 LEXER_DEBUG ("\"");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	906
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	907 curr_lexer->current_input_column++;
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	908 int tok = curr_lexer->handle_string ('"');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	909
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	910 COUNT_TOK_AND_RETURN (tok);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	911 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	912
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	913 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	914 // Other operators.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	915 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	916
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	917 ":" { LEXER_DEBUG (":"); BIN_OP_RETURN (':', false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	918
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	919 ".+" { LEXER_DEBUG (".+"); XBIN_OP_RETURN (EPLUS, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	920 ".-" { LEXER_DEBUG (".-"); XBIN_OP_RETURN (EMINUS, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	921 "." { LEXER_DEBUG ("."); BIN_OP_RETURN (EMUL, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	922 "./" { LEXER_DEBUG ("./"); BIN_OP_RETURN (EDIV, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	923 ".\\" { LEXER_DEBUG (".\\"); BIN_OP_RETURN (ELEFTDIV, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	924 ".^" { LEXER_DEBUG (".^"); BIN_OP_RETURN (EPOW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	925 "." { LEXER_DEBUG ("."); XBIN_OP_RETURN (EPOW, false, false); }
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	926 ".'" { LEXER_DEBUG (".'"); curr_lexer->do_comma_insert_check (); BIN_OP_RETURN (TRANSPOSE, true, false); }
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	927 "++" { LEXER_DEBUG ("++"); curr_lexer->do_comma_insert_check (); XBIN_OP_RETURN_INTERNAL (PLUS_PLUS, true, false, true); }
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	928 "--" { LEXER_DEBUG ("--"); curr_lexer->do_comma_insert_check (); XBIN_OP_RETURN_INTERNAL (MINUS_MINUS, true, false, true); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	929 "<=" { LEXER_DEBUG ("<="); BIN_OP_RETURN (EXPR_LE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	930 "==" { LEXER_DEBUG ("=="); BIN_OP_RETURN (EXPR_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	931 "~=" { LEXER_DEBUG ("~="); BIN_OP_RETURN (EXPR_NE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	932 "!=" { LEXER_DEBUG ("!="); XBIN_OP_RETURN (EXPR_NE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	933 ">=" { LEXER_DEBUG (">="); BIN_OP_RETURN (EXPR_GE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	934 "&" { LEXER_DEBUG ("&"); BIN_OP_RETURN (EXPR_AND, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	935 "\|" { LEXER_DEBUG ("\|"); BIN_OP_RETURN (EXPR_OR, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	936 "<" { LEXER_DEBUG ("<"); BIN_OP_RETURN (EXPR_LT, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	937 ">" { LEXER_DEBUG (">"); BIN_OP_RETURN (EXPR_GT, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	938 "+" { LEXER_DEBUG ("+"); BIN_OP_RETURN ('+', false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	939 "-" { LEXER_DEBUG ("-"); BIN_OP_RETURN ('-', false, false); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	940 "" { LEXER_DEBUG (""); BIN_OP_RETURN ('*', false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	941 "/" { LEXER_DEBUG ("/"); BIN_OP_RETURN ('/', false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	942 "\\" { LEXER_DEBUG ("\\"); BIN_OP_RETURN (LEFTDIV, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	943 ";" { LEXER_DEBUG (";"); BIN_OP_RETURN (';', true, true); }
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	944 "," { LEXER_DEBUG (","); BIN_OP_RETURN (',', true, ! curr_lexer->looking_at_object_index.front ()); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	945 "^" { LEXER_DEBUG ("^"); BIN_OP_RETURN (POW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	946 "" { LEXER_DEBUG (""); XBIN_OP_RETURN (POW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	947 "=" { LEXER_DEBUG ("="); BIN_OP_RETURN ('=', true, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	948 "&&" { LEXER_DEBUG ("&&"); BIN_OP_RETURN (EXPR_AND_AND, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	949 "\|\|" { LEXER_DEBUG ("\|\|"); BIN_OP_RETURN (EXPR_OR_OR, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	950 "<<" { LEXER_DEBUG ("<<"); XBIN_OP_RETURN (LSHIFT, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	951 ">>" { LEXER_DEBUG (">>"); XBIN_OP_RETURN (RSHIFT, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	952
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	953 {NOT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	954 LEXER_DEBUG ("{NOT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	955
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	956 if (yytext[0] == '~')
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	957 BIN_OP_RETURN (EXPR_NOT, false, false);
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	958 else
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	959 XBIN_OP_RETURN (EXPR_NOT, false, false);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	960 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	961
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	962 "(" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	963 LEXER_DEBUG ("(");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	964
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	965 // If we are looking for an object index, then push TRUE for
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	966 // looking_at_object_index. Otherwise, just push whatever state
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	967 // is current (so that we can pop it off the stack when we find
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	968 // the matching close paren).
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	969
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	970 curr_lexer->looking_at_object_index.push_front
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	971 (curr_lexer->looking_for_object_index);
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	972
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	973 curr_lexer->looking_at_indirect_ref = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	974 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	975 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	976
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	977 curr_lexer->nesting_level.paren ();
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	978 curr_lexer->decrement_promptflag ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	979
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	980 TOK_RETURN ('(');
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	981 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	982
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	983 ")" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	984 LEXER_DEBUG (")");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	985
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	986 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	987 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	988
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	989 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	990
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	991 curr_lexer->quote_is_transpose = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	992 curr_lexer->convert_spaces_to_comma
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	993 = (curr_lexer->nesting_level.is_bracket_or_brace ()
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	994 && ! curr_lexer->looking_at_anon_fcn_args);
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	995 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	996 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	997
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	998 if (curr_lexer->looking_at_anon_fcn_args)
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	999 curr_lexer->looking_at_anon_fcn_args = false;
13237 1bfca2bbea8b fix parsing of anonymous functions inside cell array lists. John W. Eaton <jwe@octave.org> parents: 12801 diff changeset	1000
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1001 curr_lexer->do_comma_insert_check ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1002
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	1003 COUNT_TOK_AND_RETURN (')');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1004 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1005
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1006 "." {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1007 LEXER_DEBUG (".");
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1008
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1009 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1010 curr_lexer->at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1011
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1012 TOK_RETURN ('.');
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1013 }
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1014
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1015 "+=" { LEXER_DEBUG ("+="); XBIN_OP_RETURN (ADD_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1016 "-=" { LEXER_DEBUG ("-="); XBIN_OP_RETURN (SUB_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1017 "=" { LEXER_DEBUG ("="); XBIN_OP_RETURN (MUL_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1018 "/=" { LEXER_DEBUG ("/="); XBIN_OP_RETURN (DIV_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1019 "\\=" { LEXER_DEBUG ("\\="); XBIN_OP_RETURN (LEFTDIV_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1020 ".+=" { LEXER_DEBUG (".+="); XBIN_OP_RETURN (ADD_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1021 ".-=" { LEXER_DEBUG (".-="); XBIN_OP_RETURN (SUB_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1022 ".=" { LEXER_DEBUG (".="); XBIN_OP_RETURN (EMUL_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1023 "./=" { LEXER_DEBUG ("./="); XBIN_OP_RETURN (EDIV_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1024 ".\\=" { LEXER_DEBUG (".\\="); XBIN_OP_RETURN (ELEFTDIV_EQ, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1025 {POW}= { LEXER_DEBUG ("{POW}="); XBIN_OP_RETURN (POW_EQ, false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1026 {EPOW}= { LEXER_DEBUG ("{EPOW}="); XBIN_OP_RETURN (EPOW_EQ, false, false); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1027 "&=" { LEXER_DEBUG ("&="); XBIN_OP_RETURN (AND_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1028 "\|=" { LEXER_DEBUG ("\|="); XBIN_OP_RETURN (OR_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1029 "<<=" { LEXER_DEBUG ("<<="); XBIN_OP_RETURN (LSHIFT_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1030 ">>=" { LEXER_DEBUG (">>="); XBIN_OP_RETURN (RSHIFT_EQ, false, false); }
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	1031
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1032 \{{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1033 LEXER_DEBUG ("\\{{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1034
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1035 curr_lexer->nesting_level.brace ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1036
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1037 curr_lexer->looking_at_object_index.push_front
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1038 (curr_lexer->looking_for_object_index);
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1039
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1040 curr_lexer->current_input_column += yyleng;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1041 curr_lexer->quote_is_transpose = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1042 curr_lexer->convert_spaces_to_comma = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1043 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1044 curr_lexer->at_beginning_of_statement = false;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1045
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1046 curr_lexer->decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1047 curr_lexer->eat_whitespace ();
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1048
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1049 curr_lexer->braceflag++;
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1050
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1051 curr_lexer->push_start_state (MATRIX_START);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1052
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	1053 COUNT_TOK_AND_RETURN ('{');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1054 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1055
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1056 "}" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1057 LEXER_DEBUG ("}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1058
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1059 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1060
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1061 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1062 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1063
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1064 curr_lexer->nesting_level.remove ();
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1065
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1066 TOK_RETURN ('}');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1067 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1068
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1069 %{
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1070 // Unrecognized input is a lexical error.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1071 %}
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1072
2042 31f4f775b8c6 [project @ 1996-03-28 09:06:28 by jwe] jwe parents: 1994 diff changeset	1073 . {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1074 LEXER_DEBUG (".");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1075
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1076 curr_lexer->xunput (yytext[0]);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1077
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1078 int c = curr_lexer->text_yyinput ();
4248 eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1079
eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1080 if (c != EOF)
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1081 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1082 curr_lexer->current_input_column++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1083
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	1084 error ("invalid character '%s' (ASCII %d) near line %d, column %d",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1085 undo_string_escape (static_cast<char> (c)), c,
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1086 curr_lexer->input_line_number, curr_lexer->current_input_column);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1087
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1088 return LEXICAL_ERROR;
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1089 }
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1090 else
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1091 return curr_lexer->handle_end_of_input ();
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1092 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1093
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1094 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1095
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1096 static void
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1097 display_character (char c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1098 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1099 if (isgraph (c))
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1100 std::cerr << c;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1101 else
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1102 switch (c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1103 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1104 case 0:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1105 std::cerr << "NUL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1106 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1107
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1108 case 1:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1109 std::cerr << "SOH";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1110 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1111
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1112 case 2:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1113 std::cerr << "STX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1114 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1115
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1116 case 3:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1117 std::cerr << "ETX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1118 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1119
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1120 case 4:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1121 std::cerr << "EOT";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1122 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1123
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1124 case 5:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1125 std::cerr << "ENQ";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1126 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1127
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1128 case 6:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1129 std::cerr << "ACK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1130 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1131
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1132 case 7:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1133 std::cerr << "\\a";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1134 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1135
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1136 case 8:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1137 std::cerr << "\\b";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1138 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1139
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1140 case 9:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1141 std::cerr << "\\t";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1142 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1143
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1144 case 10:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1145 std::cerr << "\\n";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1146 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1147
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1148 case 11:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1149 std::cerr << "\\v";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1150 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1151
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1152 case 12:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1153 std::cerr << "\\f";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1154 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1155
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1156 case 13:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1157 std::cerr << "\\r";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1158 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1159
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1160 case 14:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1161 std::cerr << "SO";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1162 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1163
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1164 case 15:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1165 std::cerr << "SI";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1166 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1167
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1168 case 16:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1169 std::cerr << "DLE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1170 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1171
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1172 case 17:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1173 std::cerr << "DC1";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1174 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1175
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1176 case 18:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1177 std::cerr << "DC2";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1178 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1179
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1180 case 19:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1181 std::cerr << "DC3";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1182 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1183
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1184 case 20:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1185 std::cerr << "DC4";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1186 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1187
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1188 case 21:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1189 std::cerr << "NAK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1190 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1191
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1192 case 22:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1193 std::cerr << "SYN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1194 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1195
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1196 case 23:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1197 std::cerr << "ETB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1198 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1199
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1200 case 24:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1201 std::cerr << "CAN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1202 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1203
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1204 case 25:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1205 std::cerr << "EM";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1206 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1207
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1208 case 26:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1209 std::cerr << "SUB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1210 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1211
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1212 case 27:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1213 std::cerr << "ESC";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1214 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1215
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1216 case 28:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1217 std::cerr << "FS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1218 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1219
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1220 case 29:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1221 std::cerr << "GS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1222 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1223
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1224 case 30:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1225 std::cerr << "RS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1226 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1227
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1228 case 31:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1229 std::cerr << "US";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1230 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1231
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1232 case 32:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1233 std::cerr << "SPACE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1234 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1235
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1236 case 127:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1237 std::cerr << "DEL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1238 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1239 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1240 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1241
13973 2c664266e9d0 clean up parser memory on exit John W. Eaton <jwe@octave.org> parents: 13260 diff changeset	1242 void
2c664266e9d0 clean up parser memory on exit John W. Eaton <jwe@octave.org> parents: 13260 diff changeset	1243 cleanup_parser (void)
2c664266e9d0 clean up parser memory on exit John W. Eaton <jwe@octave.org> parents: 13260 diff changeset	1244 {
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1245 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1246
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1247 // Return 1 if the given character matches any character in the given
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1248 // string.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1249
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1250 static bool
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1251 match_any (char c, const char *s)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1252 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1253 char tmp;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1254 while ((tmp = *s++) != '\0')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1255 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1256 if (c == tmp)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1257 return true;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1258 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1259 return false;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1260 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1261
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1262 // Given information about the spacing surrounding an operator,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1263 // return 1 if it looks like it should be treated as a binary
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1264 // operator. For example,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1265 //
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1266 // [ 1 + 2 ] or [ 1+ 2] or [ 1+2 ] ==> binary
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1267 //
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1268 // [ 1 +2 ] ==> unary
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1269
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1270 static bool
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1271 looks_like_bin_op (bool spc_prev, int next_char)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1272 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1273 bool spc_next = (next_char == ' ' \|\| next_char == '\t');
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1274
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1275 return ((spc_prev && spc_next) \|\| ! spc_prev);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1276 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1277
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1278 bool
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1279 is_keyword (const std::string& s)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1280 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1281 // Parsing function names like "set.property_name" inside
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1282 // classdef-style class definitions is simplified by handling the
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1283 // "set" and "get" portions of the names using the same mechanism as
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1284 // is used for keywords. However, they are not really keywords in
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1285 // the language, so omit them from the list of possible keywords.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1286
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1287 return (octave_kw_hash::in_word_set (s.c_str (), s.length ()) != 0
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1288 && ! (s == "set" \|\| s == "get"));
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1289 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1290
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1291 DEFUN (iskeyword, args, ,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1292 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1293 @deftypefn {Built-in Function} {} iskeyword ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1294 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1295 Return true if @var{name} is an Octave keyword. If @var{name}\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1296 is omitted, return a list of keywords.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1297 @seealso{isvarname, exist}\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1298 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1299 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1300 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1301
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1302 int argc = args.length () + 1;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1303
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1304 string_vector argv = args.make_argv ("iskeyword");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1305
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1306 if (error_state)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1307 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1308
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1309 if (argc == 1)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1310 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1311 // Neither set and get are keywords. See the note in the
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1312 // is_keyword function for additional details.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1313
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1314 string_vector lst (TOTAL_KEYWORDS);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1315
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1316 int j = 0;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1317
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1318 for (int i = 0; i < TOTAL_KEYWORDS; i++)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1319 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1320 std::string tmp = wordlist[i].name;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1321
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1322 if (! (tmp == "set" \|\| tmp == "get"))
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1323 lst[j++] = tmp;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1324 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1325
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1326 lst.resize (j);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1327
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1328 retval = Cell (lst.sort ());
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1329 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1330 else if (argc == 2)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1331 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1332 retval = is_keyword (argv[1]);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1333 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1334 else
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1335 print_usage ();
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1336
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1337 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1338 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1339
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1340 /*
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1341
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1342 %!assert (iskeyword ("for"))
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1343 %!assert (iskeyword ("fort"), false)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1344 %!assert (iskeyword ("fft"), false)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1345
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1346 */
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1347
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1348 // Used to delete trailing white space from tokens.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1349
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1350 static std::string
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1351 strip_trailing_whitespace (char *s)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1352 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1353 std::string retval = s;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1354
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1355 size_t pos = retval.find_first_of (" \t");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1356
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1357 if (pos != std::string::npos)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1358 retval.resize (pos);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1359
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1360 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1361 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1362
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1363 DEFUN (__display_tokens__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1364 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1365 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1366 Query or set the internal variable that determines whether Octave's\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1367 lexer displays tokens as they are read.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1368 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1369 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1370 return SET_INTERNAL_VARIABLE (display_tokens);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1371 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1372
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1373 DEFUN (__token_count__, , ,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1374 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1375 @deftypefn {Built-in Function} {} __token_count__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1376 Number of language tokens processed since Octave startup.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1377 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1378 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1379 return octave_value (Vtoken_count);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1380 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1381
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1382 DEFUN (__lexer_debug_flag__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1383 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1384 @deftypefn {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val}))\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1385 Undocumented internal function.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1386 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1387 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1388 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1389
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1390 retval = set_internal_variable (lexer_debug_flag, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1391 "__lexer_debug_flag__");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1392
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1393 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1394 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1395
16117 771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1396 class
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1397 flex_stream_reader : public stream_reader
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1398 {
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1399 public:
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1400 flex_stream_reader (octave_lexer l, char buf_arg)
16117 771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1401 : stream_reader (), lexer (l), buf (buf_arg)
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1402 { }
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1403
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1404 int getc (void) { return lexer->text_yyinput (); }
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1405 int ungetc (int c) { lexer->xunput (c, buf); return 0; }
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1406
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1407 private:
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1408
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1409 // No copying!
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1410
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1411 flex_stream_reader (const flex_stream_reader&);
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1412
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1413 flex_stream_reader& operator = (const flex_stream_reader&);
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1414
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1415 octave_lexer *lexer;
16117 771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1416
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1417 char *buf;
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1418 };
771186909285 maint: move class definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16116 diff changeset	1419
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1420 lexical_feedback::~lexical_feedback (void)
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1421 {
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1422 reset_token_stack ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1423 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1424
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1425 void
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1426 lexical_feedback::init (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1427 {
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1428 // The closest paren, brace, or bracket nesting is not an object
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1429 // index.
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1430 looking_at_object_index.push_front (false);
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1431 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1432
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1433 void
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1434 lexical_feedback::reset (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1435 {
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1436 end_of_input = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1437 convert_spaces_to_comma = true;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1438 do_comma_insert = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1439 at_beginning_of_statement = true;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1440 looking_at_anon_fcn_args = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1441 looking_at_return_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1442 looking_at_parameter_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1443 looking_at_decl_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1444 looking_at_initializer_expression = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1445 looking_at_matrix_or_assign_lhs = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1446 looking_for_object_index = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1447 looking_at_indirect_ref = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1448 parsing_class_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1449 maybe_classdef_get_set_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1450 parsing_classdef = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1451 quote_is_transpose = false;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1452 force_script = false;
16199 810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1453 reading_fcn_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1454 reading_script_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1455 reading_classdef_file = false;
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1456 input_line_number = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1457 current_input_column = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1458 bracketflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1459 braceflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1460 looping = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1461 defining_func = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1462 looking_at_function_handle = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1463 block_comment_nesting_level = 0;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1464 token_count = 0;
16207 0467d68ca891 move current_input_line to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16203 diff changeset	1465 current_input_line = "";
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1466 comment_text = "";
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1467 help_text = "";
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1468 fcn_file_name = "";
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1469 fcn_file_full_name = "";
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1470 looking_at_object_index.clear ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1471 looking_at_object_index.push_front (false);
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1472
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1473 while (! parsed_function_name.empty ())
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1474 parsed_function_name.pop ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1475
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1476 pending_local_variables.clear ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1477
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1478 nesting_level.reset ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1479
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1480 reset_token_stack ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1481 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1482
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1483 static bool
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1484 looks_like_copyright (const std::string& s)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1485 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1486 bool retval = false;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1487
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1488 if (! s.empty ())
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1489 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1490 size_t offset = s.find_first_not_of (" \t");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1491
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1492 retval = (s.substr (offset, 9) == "Copyright" \|\| s.substr (offset, 6) == "Author");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1493 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1494
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1495 return retval;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1496 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1497
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1498 int
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1499 lexical_feedback::finish_comment (octave_comment_elt::comment_type typ)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1500 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1501 bool copyright = looks_like_copyright (comment_text);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1502
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1503 if (nesting_level.none () && help_text.empty ()
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1504 && ! comment_text.empty () && ! copyright)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1505 help_text = comment_text;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1506
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1507 if (copyright)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1508 typ = octave_comment_elt::copyright;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1509
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1510 octave_comment_buffer::append (comment_text, typ);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1511
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1512 comment_text = "";
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1513
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1514 quote_is_transpose = false;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1515 convert_spaces_to_comma = true;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1516 at_beginning_of_statement = true;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1517
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1518 if (nesting_level.none ())
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1519 return '\n';
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1520 else if (nesting_level.is_bracket_or_brace ())
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1521 // FIXME -- this result will be different if the comment follows a
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1522 // continuation token.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1523 return ';';
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1524 else
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1525 return 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1526 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1527
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1528 void
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1529 lexical_feedback::reset_token_stack (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1530 {
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1531 // Clear out the stack of token info used to track line and
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1532 // column numbers.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1533
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1534 while (! token_stack.empty ())
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1535 {
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1536 delete token_stack.top ();
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1537 token_stack.pop ();
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1538 }
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1539 }
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1540
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1541 void
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1542 octave_lexer::input_buffer::fill (const std::string& input, bool eof_arg)
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1543 {
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1544 buffer = input;
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1545 chars_left = buffer.length ();
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1546 pos = buffer.c_str ();
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1547 eof = eof_arg;
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1548 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1549
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1550 int
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1551 octave_lexer::input_buffer::copy_chunk (char *buf, size_t max_size)
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1552 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1553 static const char * const eol = "\n";
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1554
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1555 size_t len = max_size > chars_left ? chars_left : max_size;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1556 assert (len > 0);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1557
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1558 memcpy (buf, pos, len);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1559
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1560 chars_left -= len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1561 pos += len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1562
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1563 // Make sure input ends with a new line character.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1564 if (chars_left == 0 && buf[len-1] != '\n')
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1565 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1566 if (len < max_size)
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1567 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1568 // There is enough room to plug the newline character in
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1569 // the buffer.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1570 buf[len++] = '\n';
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1571 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1572 else
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1573 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1574 // There isn't enough room to plug the newline character
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1575 // in the buffer so arrange to have it returned on the next
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1576 // call to octave_lexer::read.
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1577 pos = eol;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1578 chars_left = 1;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1579 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1580 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1581
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1582 return len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1583 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1584
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1585 octave_lexer::~octave_lexer (void)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1586 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1587 yylex_destroy (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1588 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1589
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1590 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1591 octave_lexer::init (void)
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1592 {
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1593 yylex_init (&scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1594
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1595 // Make octave_lexer object available through yyextra in
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1596 // flex-generated lexer.
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1597 yyset_extra (this, scanner);
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1598
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1599 clear_start_state ();
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1600 }
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1601
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1602 // Inside Flex-generated functions, yyg is the scanner cast to its real
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1603 // type. Some flex macros that we use in octave_lexer member functions
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1604 // (for example, BEGIN) use yyg. If we could perform the actions of
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1605 // these macros with functions instead, we could eliminate the
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1606 // OCTAVE_YYG macro.
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1607
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1608 #define OCTAVE_YYG \
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1609 struct yyguts_t yyg = static_cast<struct yyguts_t> (scanner)
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1610
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1611 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1612 octave_lexer::reset (void)
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1613 {
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1614 // Start off on the right foot.
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1615 clear_start_state ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1616
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1617 parser_symtab_context.clear ();
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1618
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1619 // We do want a prompt by default.
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1620 promptflag (1);
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1621
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1622 // Only ask for input from stdin if we are expecting interactive
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1623 // input.
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1624
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1625 if (! quitting_gracefully
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1626 && (interactive \|\| forced_interactive)
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1627 && ! (reading_fcn_file
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1628 \|\| reading_classdef_file
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1629 \|\| reading_script_file
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1630 \|\| input_from_eval_string ()))
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1631 yyrestart (stdin, scanner);
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1632
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1633 input_reader.reset ();
e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1634
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1635 lexical_feedback::reset ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1636 }
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	1637
16124 3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	1638 void
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1639 octave_lexer::prep_for_file (void)
16124 3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	1640 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1641 reading_script_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1642
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	1643 push_start_state (INPUT_FILE_START);
16124 3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	1644 }
3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	1645
16121 bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1646 int
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1647 octave_lexer::read (char *buf, unsigned max_size)
16121 bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1648 {
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1649 int status = 0;
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1650
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1651 if (input_buf.empty ())
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1652 {
b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1653 bool eof = false;
16207 0467d68ca891 move current_input_line to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16203 diff changeset	1654 current_input_line = input_reader.get_input (eof);
0467d68ca891 move current_input_line to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16203 diff changeset	1655 input_buf.fill (current_input_line, eof);
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1656 }
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1657
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1658 if (! input_buf.empty ())
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1659 status = input_buf.copy_chunk (buf, max_size);
16121 bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1660 else
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1661 {
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1662 status = YY_NULL;
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1663
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1664 if (! input_buf.at_eof ())
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1665 fatal_error ("octave_lexer::read () in flex scanner failed");
16121 bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1666 }
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1667
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1668 return status;
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1669 }
bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	1670
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1671 int
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1672 octave_lexer::handle_end_of_input (void)
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1673 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1674 // FIXME -- we need this because of the way TOK_RETURN is defined. DO
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1675 // something better than that...
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1676 OCTAVE_YYG;
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1677
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1678 LEXER_DEBUG ("<<EOF>>");
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1679
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1680 if (block_comment_nesting_level != 0)
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1681 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1682 warning ("block comment open at end of input");
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1683
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1684 if ((reading_fcn_file \|\| reading_script_file \|\| reading_classdef_file)
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1685 && ! fcn_file_name.empty ())
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1686 warning ("near line %d of file '%s.m'",
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1687 input_line_number, fcn_file_name.c_str ());
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1688 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1689
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1690 TOK_RETURN (END_OF_INPUT);
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1691 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1692
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	1693 char *
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1694 octave_lexer::flex_yytext (void)
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	1695 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1696 return yyget_text (scanner);
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	1697 }
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	1698
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	1699 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1700 octave_lexer::flex_yyleng (void)
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	1701 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1702 return yyget_leng (scanner);
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	1703 }
421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	1704
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1705 // GAG.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1706 //
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1707 // If we're reading a matrix and the next character is '[', make sure
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1708 // that we insert a comma ahead of it.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1709
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1710 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1711 octave_lexer::do_comma_insert_check (void)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1712 {
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1713 bool spc_gobbled = (eat_continuation () != octave_lexer::NO_WHITESPACE);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1714
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1715 int c = text_yyinput ();
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1716
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1717 xunput (c);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1718
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1719 if (spc_gobbled)
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1720 xunput (' ');
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1721
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1722 do_comma_insert = (! looking_at_object_index.front ()
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1723 && bracketflag && c == '[');
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1724 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1725
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1726 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1727 octave_lexer::text_yyinput (void)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1728 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1729 int c = yyinput (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1730
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1731 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1732 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1733 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1734 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1735 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1736 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1737
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1738 // Convert CRLF into just LF and single CR into LF.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1739
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1740 if (c == '\r')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1741 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1742 c = yyinput (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1743
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1744 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1745 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1746 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1747 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1748 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1749 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1750
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1751 if (c != '\n')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1752 {
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1753 xunput (c);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1754 c = '\n';
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1755 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1756 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1757
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1758 if (c == '\n')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1759 input_line_number++;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1760
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1761 return c;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1762 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1763
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1764 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1765 octave_lexer::xunput (char c, char *buf)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1766 {
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1767 if (c != EOF)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1768 {
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1769 if (lexer_debug_flag)
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1770 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1771 std::cerr << "U: ";
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1772 display_character (c);
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1773 std::cerr << std::endl;
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1774 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1775
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1776 if (c == '\n')
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1777 input_line_number--;
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1778
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	1779 yyunput (c, buf, scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1780 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1781 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1782
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1783 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1784 octave_lexer::xunput (char c)
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1785 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	1786 char *yytxt = flex_yytext ();
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	1787
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	1788 xunput (c, yytxt);
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1789 }
96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1790
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1791 // If we read some newlines, we need figure out what column we're
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1792 // really looking at.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1793
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1794 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1795 octave_lexer::fixup_column_count (char *s)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1796 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1797 char c;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1798 while ((c = *s++) != '\0')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1799 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1800 if (c == '\n')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1801 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1802 input_line_number++;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1803 current_input_column = 1;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1804 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1805 else
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1806 current_input_column++;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1807 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1808 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1809
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1810 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1811 octave_lexer::inside_any_object_index (void)
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1812 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1813 bool retval = false;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1814
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1815 for (std::list<bool>::const_iterator i = looking_at_object_index.begin ();
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1816 i != looking_at_object_index.end (); i++)
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1817 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1818 if (*i)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1819 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1820 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1821 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1822 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1823 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1824
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1825 return retval;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1826 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1827
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1828 // Handle keywords. Return -1 if the keyword should be ignored.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1829
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1830 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	1831 octave_lexer::is_keyword_token (const std::string& s)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1832 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1833 int l = input_line_number;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1834 int c = current_input_column;
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	1835
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	1836 int len = s.length ();
922 708827b941b4 [project @ 1994-11-14 22:14:13 by jwe] jwe parents: 916 diff changeset	1837
5088 7830f271a53f [project @ 2004-12-01 19:54:45 by jwe] jwe parents: 5035 diff changeset	1838 const octave_kw *kw = octave_kw_hash::in_word_set (s.c_str (), len);
191 b6b4d8c513fe [project @ 1993-10-29 23:41:39 by jwe] jwe parents: 186 diff changeset	1839
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1840 if (kw)
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	1841 {
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1842 token *tok_val = 0;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1843
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1844 switch (kw->kw_id)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1845 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1846 case break_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1847 case catch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1848 case continue_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1849 case else_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1850 case otherwise_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1851 case return_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1852 case unwind_protect_cleanup_kw:
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1853 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1854 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1855
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1856 case static_kw:
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1857 if ((reading_fcn_file \|\| reading_script_file
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1858 \|\| reading_classdef_file)
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1859 && ! fcn_file_full_name.empty ())
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1860 warning_with_id ("Octave:deprecated-keyword",
15468 6437fa7263dd use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 15467 diff changeset	1861 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d of file '%s'",
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1862 input_line_number,
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1863 fcn_file_full_name.c_str ());
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1864 else
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1865 warning_with_id ("Octave:deprecated-keyword",
15468 6437fa7263dd use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 15467 diff changeset	1866 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d",
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1867 input_line_number);
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1868 // fall through ...
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1869
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1870 case persistent_kw:
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1871 break;
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	1872
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1873 case case_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1874 case elseif_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1875 case global_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1876 case until_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1877 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1878
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1879 case end_kw:
14645 cbc00b587f36 also allow "end" indexing in classdef files John W. Eaton <jwe@octave.org> parents: 14642 diff changeset	1880 if (inside_any_object_index ()
cbc00b587f36 also allow "end" indexing in classdef files John W. Eaton <jwe@octave.org> parents: 14642 diff changeset	1881 \|\| (! reading_classdef_file
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1882 && (defining_func
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1883 && ! (looking_at_return_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1884 \|\| parsed_function_name.top ()))))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1885 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1886
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1887 tok_val = new token (token::simple_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1888 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1889 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1890
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1891 case end_try_catch_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1892 tok_val = new token (token::try_catch_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1893 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1894 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1895
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1896 case end_unwind_protect_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1897 tok_val = new token (token::unwind_protect_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1898 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1899 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1900
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1901 case endfor_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1902 tok_val = new token (token::for_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1903 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1904 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1905
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1906 case endfunction_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1907 tok_val = new token (token::function_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1908 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1909 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1910
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1911 case endif_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1912 tok_val = new token (token::if_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1913 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1914 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1915
13246 0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	1916 case endparfor_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1917 tok_val = new token (token::parfor_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1918 at_beginning_of_statement = true;
13246 0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	1919 break;
0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	1920
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1921 case endswitch_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1922 tok_val = new token (token::switch_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1923 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1924 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1925
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1926 case endwhile_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1927 tok_val = new token (token::while_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1928 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1929 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1930
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1931 case endclassdef_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1932 tok_val = new token (token::classdef_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1933 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1934 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1935
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	1936 case endenumeration_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1937 tok_val = new token (token::enumeration_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1938 at_beginning_of_statement = true;
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	1939 break;
7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	1940
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1941 case endevents_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1942 tok_val = new token (token::events_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1943 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1944 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1945
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1946 case endmethods_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1947 tok_val = new token (token::methods_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1948 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1949 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1950
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1951 case endproperties_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	1952 tok_val = new token (token::properties_end, l, c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1953 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1954 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1955
13245 027a2186cd90 parfor keyword and infrastructure, but handle parfor as normal for loop for now John W. Eaton <jwe@octave.org> parents: 13237 diff changeset	1956
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1957 case for_kw:
13245 027a2186cd90 parfor keyword and infrastructure, but handle parfor as normal for loop for now John W. Eaton <jwe@octave.org> parents: 13237 diff changeset	1958 case parfor_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1959 case while_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1960 decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1961 looping++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1962 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1963
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1964 case do_kw:
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1965 at_beginning_of_statement = true;
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1966 decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1967 looping++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1968 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1969
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1970 case try_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1971 case unwind_protect_kw:
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1972 at_beginning_of_statement = true;
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1973 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1974 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1975
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1976 case if_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1977 case switch_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	1978 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1979 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1980
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1981 case get_kw:
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1982 case set_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1983 // 'get' and 'set' are keywords in classdef method
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1984 // declarations.
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1985 if (! maybe_classdef_get_set_method)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1986 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1987 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1988
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	1989 case enumeration_kw:
7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	1990 case events_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1991 case methods_kw:
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	1992 case properties_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1993 // 'properties', 'methods' and 'events' are keywords for
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1994 // classdef blocks.
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1995 if (! parsing_classdef)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1996 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1997 // fall through ...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1998
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1999 case classdef_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2000 // 'classdef' is always a keyword.
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2001 decrement_promptflag ();
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2002
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2003 if (! force_script && token_count == 0 && input_from_file ())
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2004 {
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2005 reading_classdef_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2006 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2007 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2008 break;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2009
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2010 case function_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2011 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2012
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2013 defining_func++;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2014 parsed_function_name.push (false);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2015
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2016 if (! force_script && token_count == 0 && input_from_file ())
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2017 {
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2018 reading_fcn_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2019 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2020 }
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2021
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2022 if (! (reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2023 \|\| reading_classdef_file))
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2024 input_line_number = 1;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2025 break;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2026
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2027 case magic_file_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2028 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2029 if ((reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2030 \|\| reading_classdef_file)
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2031 && ! fcn_file_full_name.empty ())
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2032 tok_val = new token (fcn_file_full_name, l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2033 else
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2034 tok_val = new token ("stdin", l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2035 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2036 break;
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2037
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2038 case magic_line_kw:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2039 tok_val = new token (static_cast<double> (l), "", l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2040 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2041
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2042 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2043 panic_impossible ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2044 }
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2045
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2046 if (! tok_val)
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2047 tok_val = new token (l, c);
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2048
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2049 push_token (tok_val);
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2050
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2051 return kw->tok;
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	2052 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2053
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2054 return 0;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2055 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2056
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2057 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2058 octave_lexer::is_variable (const std::string& name)
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	2059 {
8001 ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	2060 return (symbol_table::is_variable (name)
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2061 \|\| (pending_local_variables.find (name)
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2062 != pending_local_variables.end ()));
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	2063 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	2064
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2065 // Recognize separators. If the separator is a CRLF pair, it is
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2066 // replaced by a single LF.
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2067
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2068 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2069 octave_lexer::next_token_is_sep_op (void)
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2070 {
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2071 bool retval = false;
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2072
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2073 int c = text_yyinput ();
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2074
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2075 retval = match_any (c, ",;\n]");
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2076
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2077 xunput (c);
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2078
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2079 return retval;
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2080 }
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2081
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2082 // Try to determine if the next token should be treated as a postfix
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2083 // unary operator. This is ugly, but it seems to do the right thing.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2084
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2085 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2086 octave_lexer::next_token_is_postfix_unary_op (bool spc_prev)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2087 {
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2088 bool un_op = false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2089
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2090 int c0 = text_yyinput ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2091
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2092 if (c0 == '\'' && ! spc_prev)
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2093 {
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2094 un_op = true;
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2095 }
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2096 else if (c0 == '.')
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2097 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2098 int c1 = text_yyinput ();
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2099 un_op = (c1 == '\'');
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2100 xunput (c1);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2101 }
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2102 else if (c0 == '+')
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2103 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2104 int c1 = text_yyinput ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2105 un_op = (c1 == '+');
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2106 xunput (c1);
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2107 }
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2108 else if (c0 == '-')
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2109 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2110 int c1 = text_yyinput ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2111 un_op = (c1 == '-');
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2112 xunput (c1);
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2113 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2114
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2115 xunput (c0);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2116
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2117 return un_op;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2118 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2119
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2120 // Try to determine if the next token should be treated as a binary
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2121 // operator.
1521 b3e4ca4f75a0 [project @ 1995-10-04 05:10:36 by jwe] jwe parents: 1520 diff changeset	2122 //
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2123 // This kluge exists because whitespace is not always ignored inside
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2124 // the square brackets that are used to create matrix objects (though
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2125 // spacing only really matters in the cases that can be interpreted
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2126 // either as binary ops or prefix unary ops: currently just +, -).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2127 //
3779 3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2128 // Note that a line continuation directly following a + or - operator
3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2129 // (e.g., the characters '[' 'a' ' ' '+' '\' LFD 'b' ']') will be
3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2130 // parsed as a binary operator.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2131
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2132 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2133 octave_lexer::next_token_is_bin_op (bool spc_prev)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2134 {
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2135 bool bin_op = false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2136
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2137 int c0 = text_yyinput ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2138
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2139 switch (c0)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2140 {
777 a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2141 case '+':
a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2142 case '-':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2143 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2144 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2145
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2146 switch (c1)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2147 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2148 case '+':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2149 case '-':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2150 // Unary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2151 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2152
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2153 case '=':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2154 // Binary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2155 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2156 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2157
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2158 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2159 // Could be either, spacing matters.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2160 bin_op = looks_like_bin_op (spc_prev, c1);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2161 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2162 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2163
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2164 xunput (c1);
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2165 }
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2166 break;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2167
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2168 case ':':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2169 case '/':
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2170 case '\\':
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2171 case '^':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2172 // Always a binary op (may also include /=, \=, and ^=).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2173 bin_op = true;
1276 cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2174 break;
cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2175
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2176 // .+ .- ./ .\ .^ .* .**
1554 b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2177 case '.':
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2178 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2179 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2180
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2181 if (match_any (c1, "+-/\\^*"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2182 // Always a binary op (may also include .+=, .-=, ./=, ...).
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2183 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2184 else if (! isdigit (c1) && c1 != ' ' && c1 != '\t' && c1 != '.')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2185 // A structure element reference is a binary op.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2186 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2187
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2188 xunput (c1);
1554 b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2189 }
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2190 break;
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2191
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2192 // = == & && \| \|\| * **
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2193 case '=':
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2194 case '&':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2195 case '\|':
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2196 case '*':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2197 // Always a binary op (may also include ==, &&, \|\|, **).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2198 bin_op = true;
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2199 break;
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2200
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2201 // < <= <> > >=
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2202 case '<':
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2203 case '>':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2204 // Always a binary op (may also include <=, <>, >=).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2205 bin_op = true;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2206 break;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2207
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2208 // ~= !=
777 a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2209 case '~':
a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2210 case '!':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2211 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2212 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2213
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2214 // ~ and ! can be unary ops, so require following =.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2215 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2216 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2217
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2218 xunput (c1);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2219 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2220 break;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2221
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2222 default:
1276 cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2223 break;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2224 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2225
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2226 xunput (c0);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2227
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2228 return bin_op;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2229 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2230
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2231 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2232
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2233 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2234 octave_lexer::scan_for_comments (const char *text)
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2235 {
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2236 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2237
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2238 bool in_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2239 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2240
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2241 int len = strlen (text);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2242 int i = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2243
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2244 while (i < len)
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2245 {
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2246 char c = text[i++];
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2247
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2248 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2249 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2250 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2251 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2252 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2253 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2254 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2255 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2256 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2257 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2258 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2259 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2260 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2261 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2262 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2263 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2264
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2265 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2266 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2267 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2268 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2269 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2270 comment_buf.resize (0);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2271 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2272 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2273 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2274 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2275
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2276 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2277 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2278 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2279 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2280 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2281 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2282 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2283 }
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2284 }
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2285
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2286 if (! comment_buf.empty ())
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2287 octave_comment_buffer::append (comment_buf);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2288 }
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2289
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2290 // Discard whitespace, including comments and continuations.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2291
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2292 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2293
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2294 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2295 octave_lexer::eat_whitespace (void)
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2296 {
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2297 int retval = octave_lexer::NO_WHITESPACE;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2298
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2299 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2300
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2301 bool in_comment = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2302 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2303
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2304 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2305
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2306 while ((c = text_yyinput ()) != EOF)
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2307 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2308 current_input_column++;
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2309
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2310 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2311 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2312 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2313 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2314 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2315 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2316 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2317 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2318 }
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2319 retval \|= octave_lexer::SPACE_OR_TAB;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2320 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2321
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2322 case '\n':
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2323 retval \|= octave_lexer::NEWLINE;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2324 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2325 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2326 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2327 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2328 comment_buf.resize (0);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2329 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2330 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2331 }
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2332 current_input_column = 0;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2333 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2334
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2335 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2336 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2337 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2338 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2339 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2340 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2341 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2342 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2343 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2344 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2345 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2346 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2347 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2348 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2349
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2350 case '.':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2351 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2352 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2353 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2354 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2355 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2356 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2357 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2358 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2359 if (have_ellipsis_continuation ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2360 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2361 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2362 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2363 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2364
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2365 case '\\':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2366 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2367 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2368 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2369 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2370 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2371 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2372 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2373 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2374 if (have_continuation ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2375 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2376 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2377 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2378 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2379
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2380 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2381 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2382 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2383 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2384 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2385 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2386 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2387 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2388 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2389 }
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2390 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2391
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2392 if (! comment_buf.empty ())
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2393 octave_comment_buffer::append (comment_buf);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2394
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2395 done:
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2396 xunput (c);
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2397 current_input_column--;
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2398 return retval;
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2399 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2400
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2401 static inline bool
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2402 looks_like_hex (const char *s, int len)
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2403 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2404 return (len > 2 && s[0] == '0' && (s[1] == 'x' \|\| s[1] == 'X'));
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2405 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2406
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2407 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2408 octave_lexer::handle_number (void)
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2409 {
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2410 double value = 0.0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2411 int nread = 0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2412
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2413 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2414
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2415 if (looks_like_hex (yytxt, strlen (yytxt)))
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2416 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2417 unsigned long ival;
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2418
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2419 nread = sscanf (yytxt, "%lx", &ival);
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2420
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2421 value = static_cast<double> (ival);
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2422 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2423 else
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2424 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2425 char *tmp = strsave (yytxt);
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2426
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2427 char *idx = strpbrk (tmp, "Dd");
2621 337a09dd1c06 [project @ 1997-01-24 21:49:41 by jwe] jwe parents: 2614 diff changeset	2428
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2429 if (idx)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2430 *idx = 'e';
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2431
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2432 nread = sscanf (tmp, "%lf", &value);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2433
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2434 delete [] tmp;
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2435 }
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2436
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2437 // If yytext doesn't contain a valid number, we are in deep doo doo.
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	2438
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2439 assert (nread == 1);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2440
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2441 quote_is_transpose = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2442 convert_spaces_to_comma = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2443 looking_for_object_index = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2444 at_beginning_of_statement = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2445
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2446 push_token (new token (value, yytxt, input_line_number,
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2447 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2448
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2449 current_input_column += flex_yyleng ();
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2450
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2451 do_comma_insert_check ();
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2452 }
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2453
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2454 // We have seen a backslash and need to find out if it should be
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2455 // treated as a continuation character. If so, this eats it, up to
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2456 // and including the new line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2457 //
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2458 // Match whitespace only, followed by a comment character or newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2459 // Once a comment character is found, discard all input until newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2460 // If non-whitespace characters are found before comment
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2461 // characters, return 0. Otherwise, return 1.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2462
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2463 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2464
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2465 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2466 octave_lexer::have_continuation (bool trailing_comments_ok)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2467 {
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2468 std::ostringstream buf;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2469
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2470 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2471
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2472 bool in_comment = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2473 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2474
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2475 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2476
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2477 while ((c = text_yyinput ()) != EOF)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2478 {
3802 4f1a26a730fd [project @ 2001-02-26 20:26:14 by jwe] jwe parents: 3796 diff changeset	2479 buf << static_cast<char> (c);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2480
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2481 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2482 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2483 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2484 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2485 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2486 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2487 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2488 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2489 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2490 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2491
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2492 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2493 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2494 if (trailing_comments_ok)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2495 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2496 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2497 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2498 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2499 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2500 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2501 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2502 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2503 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2504 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2505 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2506 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2507 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2508 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2509 goto cleanup;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2510 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2511
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2512 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2513 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2514 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2515 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2516 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2517 }
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2518 current_input_column = 0;
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2519 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2520 gripe_matlab_incompatible_continuation ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2521 return true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2522
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2523 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2524 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2525 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2526 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2527 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2528 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2529 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2530 goto cleanup;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2531 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2532 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2533 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2534
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2535 xunput (c);
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2536 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2537
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2538 cleanup:
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2539
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2540 std::string s = buf.str ();
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2541
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2542 int len = s.length ();
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2543 while (len--)
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2544 xunput (s[len]);
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2545
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2546 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2547 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2548
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	2549 // We have seen a '.' and need to see if it is the start of a
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2550 // continuation. If so, this eats it, up to and including the new
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2551 // line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2552
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2553 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2554 octave_lexer::have_ellipsis_continuation (bool trailing_comments_ok)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2555 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2556 char c1 = text_yyinput ();
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2557 if (c1 == '.')
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2558 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2559 char c2 = text_yyinput ();
1091 54abf1b3a8e9 [project @ 1995-02-02 00:30:14 by jwe] jwe parents: 1088 diff changeset	2560 if (c2 == '.' && have_continuation (trailing_comments_ok))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2561 return true;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2562 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2563 {
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2564 xunput (c2);
96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2565 xunput (c1);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2566 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2567 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2568 else
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2569 xunput (c1);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2570
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2571 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2572 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2573
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2574 // See if we have a continuation line. If so, eat it and the leading
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2575 // whitespace on the next line.
16106 031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	2576
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2577 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2578 octave_lexer::eat_continuation (void)
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2579 {
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2580 int retval = octave_lexer::NO_WHITESPACE;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2581
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2582 int c = text_yyinput ();
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2583
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2584 if ((c == '.' && have_ellipsis_continuation ())
3105 f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe] jwe parents: 3103 diff changeset	2585 \|\| (c == '\\' && have_continuation ()))
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2586 retval = eat_whitespace ();
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2587 else
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2588 xunput (c);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2589
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2590 return retval;
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2591 }
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2592
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2593 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2594 octave_lexer::handle_string (char delim)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2595 {
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2596 std::ostringstream buf;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2597
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2598 int bos_line = input_line_number;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2599 int bos_col = current_input_column;
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2600
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2601 int c;
1031 59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe] jwe parents: 1019 diff changeset	2602 int escape_pending = 0;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2603
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2604 while ((c = text_yyinput ()) != EOF)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2605 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2606 current_input_column++;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2607
3105 f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe] jwe parents: 3103 diff changeset	2608 if (c == '\\')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2609 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2610 if (delim == '\'' \|\| escape_pending)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2611 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2612 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2613 escape_pending = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2614 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2615 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2616 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2617 if (have_continuation (false))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2618 escape_pending = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2619 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2620 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2621 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2622 escape_pending = 1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2623 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2624 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2625 continue;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2626 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2627 else if (c == '.')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2628 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2629 if (delim == '\'' \|\| ! have_ellipsis_continuation (false))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2630 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2631 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2632 else if (c == '\n')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2633 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2634 error ("unterminated string constant");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2635 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2636 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2637 else if (c == delim)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2638 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2639 if (escape_pending)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2640 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2641 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2642 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2643 c = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2644 if (c == delim)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2645 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2646 buf << static_cast<char> (c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2647 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2648 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2649 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2650 std::string s;
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2651 xunput (c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2652
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2653 if (delim == '\'')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2654 s = buf.str ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2655 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2656 s = do_string_escapes (buf.str ());
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2657
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2658 quote_is_transpose = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2659 convert_spaces_to_comma = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2660
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2661 push_token (new token (s, bos_line, bos_col));
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2662
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2663 if (delim == '"')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2664 gripe_matlab_incompatible ("\" used as string delimiter");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2665 else if (delim == '\'')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2666 gripe_single_quote_string ();
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2667
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2668 looking_for_object_index = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2669 at_beginning_of_statement = false;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2670
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2671 return delim == '"' ? DQ_STRING : SQ_STRING;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2672 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2673 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2674 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2675 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2676 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2677 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2678 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2679
1031 59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe] jwe parents: 1019 diff changeset	2680 escape_pending = 0;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2681 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2682
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2683 return LEXICAL_ERROR;
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2684 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2685
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2686 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2687 octave_lexer::next_token_is_assign_op (void)
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2688 {
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2689 bool retval = false;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2690
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2691 int c0 = text_yyinput ();
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2692
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2693 switch (c0)
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2694 {
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2695 case '=':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2696 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2697 int c1 = text_yyinput ();
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2698 xunput (c1);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2699 if (c1 != '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2700 retval = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2701 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2702 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2703
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2704 case '+':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2705 case '-':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2706 case '*':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2707 case '/':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2708 case '\\':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2709 case '&':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2710 case '\|':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2711 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2712 int c1 = text_yyinput ();
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2713 xunput (c1);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2714 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2715 retval = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2716 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2717 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2718
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2719 case '.':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2720 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2721 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2722 if (match_any (c1, "+-*/\\"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2723 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2724 int c2 = text_yyinput ();
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2725 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2726 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2727 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2728 }
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2729 xunput (c1);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2730 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2731 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2732
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2733 case '>':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2734 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2735 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2736 if (c1 == '>')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2737 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2738 int c2 = text_yyinput ();
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2739 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2740 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2741 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2742 }
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2743 xunput (c1);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2744 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2745 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2746
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2747 case '<':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2748 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2749 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2750 if (c1 == '<')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2751 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2752 int c2 = text_yyinput ();
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2753 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2754 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2755 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2756 }
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2757 xunput (c1);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2758 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2759 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2760
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2761 default:
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2762 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2763 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2764
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2765 xunput (c0);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2766
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2767 return retval;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2768 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2769
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2770 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2771 octave_lexer::next_token_is_index_op (void)
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2772 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2773 int c = text_yyinput ();
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2774 xunput (c);
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2775 return c == '(' \|\| c == '{';
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2776 }
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2777
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2778 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2779 octave_lexer::handle_close_bracket (bool spc_gobbled, int bracket_type)
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2780 {
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2781 int retval = bracket_type;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2782
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2783 if (! nesting_level.none ())
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2784 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2785 nesting_level.remove ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2786
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2787 if (bracket_type == ']')
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2788 bracketflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2789 else if (bracket_type == '}')
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2790 braceflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2791 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2792 panic_impossible ();
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2793 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2794
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2795 pop_start_state ();
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2796
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2797 if (bracket_type == ']'
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2798 && next_token_is_assign_op ()
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2799 && ! looking_at_return_list)
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2800 {
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2801 retval = CLOSE_BRACE;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2802 }
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2803 else if ((bracketflag \|\| braceflag)
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2804 && convert_spaces_to_comma
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2805 && (nesting_level.is_bracket ()
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2806 \|\| (nesting_level.is_brace ()
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2807 && ! looking_at_object_index.front ())))
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2808 {
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2809 bool index_op = next_token_is_index_op ();
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2810
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2811 // Don't insert comma if we are looking at something like
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2812 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2813 // [x{i}{j}] or [x{i}(j)]
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2814 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2815 // but do if we are looking at
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2816 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2817 // [x{i} {j}] or [x{i} (j)]
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2818
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2819 if (spc_gobbled \|\| ! (bracket_type == '}' && index_op))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2820 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2821 bool bin_op = next_token_is_bin_op (spc_gobbled);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2822
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2823 bool postfix_un_op = next_token_is_postfix_unary_op (spc_gobbled);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2824
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2825 bool sep_op = next_token_is_sep_op ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2826
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2827 if (! (postfix_un_op \|\| bin_op \|\| sep_op))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2828 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2829 maybe_warn_separator_insert (',');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2830
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2831 xunput (',');
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2832 return retval;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2833 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2834 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2835 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2836
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2837 quote_is_transpose = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2838 convert_spaces_to_comma = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2839
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2840 return retval;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2841 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2842
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2843 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2844 octave_lexer::maybe_unput_comma (int spc_gobbled)
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2845 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2846 if (nesting_level.is_bracket ()
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2847 \|\| (nesting_level.is_brace ()
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2848 && ! looking_at_object_index.front ()))
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2849 {
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2850 int bin_op = next_token_is_bin_op (spc_gobbled);
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2851
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2852 int postfix_un_op = next_token_is_postfix_unary_op (spc_gobbled);
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2853
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2854 int c1 = text_yyinput ();
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2855 int c2 = text_yyinput ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2856
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2857 xunput (c2);
96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2858 xunput (c1);
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2859
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2860 int sep_op = next_token_is_sep_op ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2861
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2862 int dot_op = (c1 == '.'
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2863 && (isalpha (c2) \|\| isspace (c2) \|\| c2 == '_'));
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2864
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2865 if (postfix_un_op \|\| bin_op \|\| sep_op \|\| dot_op)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2866 return;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2867
3985 fa0ae9105656 [project @ 2002-07-11 04:02:00 by jwe] jwe parents: 3974 diff changeset	2868 int index_op = (c1 == '(' \|\| c1 == '{');
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2869
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2870 // If there is no space before the indexing op, we don't insert
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2871 // a comma.
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2872
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2873 if (index_op && ! spc_gobbled)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2874 return;
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2875
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2876 maybe_warn_separator_insert (',');
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2877
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2878 xunput (',');
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2879 }
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2880 }
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2881
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2882 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2883 octave_lexer::next_token_can_follow_bin_op (void)
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2884 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2885 std::stack<char> buf;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2886
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2887 int c = EOF;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2888
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2889 // Skip whitespace in current statement on current line
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2890 while (true)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2891 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2892 c = text_yyinput ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2893
8767 026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack John W. Eaton <jwe@octave.org> parents: 8746 diff changeset	2894 buf.push (c);
026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack John W. Eaton <jwe@octave.org> parents: 8746 diff changeset	2895
026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack John W. Eaton <jwe@octave.org> parents: 8746 diff changeset	2896 if (match_any (c, ",;\n") \|\| (c != ' ' && c != '\t'))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2897 break;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2898 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2899
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2900 // Restore input.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2901 while (! buf.empty ())
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2902 {
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2903 xunput (buf.top ());
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2904
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2905 buf.pop ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2906 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2907
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2908 return (isalnum (c) \|\| match_any (c, "!\"'(-[_{~"));
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2909 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2910
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2911 static bool
10052 5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2912 can_be_command (const std::string& tok)
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2913 {
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2914 // Don't allow these names to be treated as commands to avoid
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2915 // surprises when parsing things like "NaN ^2".
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2916
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2917 return ! (tok == "e"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2918 \|\| tok == "I" \|\| tok == "i"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2919 \|\| tok == "J" \|\| tok == "j"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2920 \|\| tok == "Inf" \|\| tok == "inf"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2921 \|\| tok == "NaN" \|\| tok == "nan");
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2922 }
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2923
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2924 bool
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	2925 octave_lexer::looks_like_command_arg (void)
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2926 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2927 bool retval = true;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2928
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2929 int c0 = text_yyinput ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2930
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2931 switch (c0)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2932 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2933 // = ==
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2934 case '=':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2935 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2936 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2937
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2938 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2939 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2940 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2941
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2942 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2943 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2944 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2945
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2946 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2947 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2948 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2949 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2950
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2951 xunput (c1);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2952 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2953 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2954
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2955 case '(':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2956 case '{':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2957 // Indexing.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2958 retval = false;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2959 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2960
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2961 case '\n':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2962 // EOL.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2963 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2964
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2965 case '\'':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2966 case '"':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2967 // Beginning of a character string.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2968 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2969
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2970 // + - ++ -- += -=
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2971 case '+':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2972 case '-':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2973 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2974 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2975
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2976 switch (c1)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2977 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2978 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2979 // EOL.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2980 case '+':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2981 case '-':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2982 // Unary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2983 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2984
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2985 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2986 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2987 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2988 if (next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2989 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2990 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2991 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2992
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2993 case '=':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2994 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2995 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2996
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2997 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2998 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2999 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3000
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3001 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3002 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3003 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3004 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3005
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3006 xunput (c1);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3007 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3008 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3009
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3010 case ':':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3011 case '/':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3012 case '\\':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3013 case '^':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3014 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3015 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3016
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3017 if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3018 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3019 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3020
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3021 xunput (c1);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3022 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3023 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3024
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3025 // .+ .- ./ .\ .^ .* .**
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3026 case '.':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3027 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3028 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3029
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3030 if (match_any (c1, "+-/\\^*"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3031 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3032 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3033
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3034 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3035 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3036 int c3 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3037
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3038 if (! match_any (c3, ",;\n") && (c3 == ' ' \|\| c3 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3039 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3040 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3041
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3042 xunput (c3);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3043 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3044 else if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3045 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3046 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3047
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3048 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3049 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3050 else if (! match_any (c1, ",;\n")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3051 && (! isdigit (c1) && c1 != ' ' && c1 != '\t'
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3052 && c1 != '.'))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3053 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3054 // Structure reference. FIXME -- is this a complete check?
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3055
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3056 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3057 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3058
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3059 xunput (c1);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3060 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3061 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3062
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3063 // & && \| \|\| * **
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3064 case '&':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3065 case '\|':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3066 case '*':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3067 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3068 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3069
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3070 if (c1 == c0)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3071 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3072 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3073
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3074 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3075 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3076 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3077
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3078 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3079 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3080 else if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3081 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3082 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3083
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3084 xunput (c1);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3085 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3086 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3087
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3088 // < <= > >=
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3089 case '<':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3090 case '>':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3091 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3092 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3093
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3094 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3095 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3096 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3097
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3098 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3099 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3100 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3101
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3102 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3103 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3104 else if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3105 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3106 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3107
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3108 xunput (c1);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3109 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3110 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3111
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3112 // ~= !=
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3113 case '~':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3114 case '!':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3115 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3116 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3117
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3118 // ~ and ! can be unary ops, so require following =.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3119 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3120 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3121 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3122
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3123 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3124 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3125 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3126
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3127 xunput (c2);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3128 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3129 else if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3130 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3131 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3132
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3133 xunput (c1);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3134 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3135 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3136
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3137 default:
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3138 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3139 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3140
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3141 xunput (c0);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3142
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3143 return retval;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3144 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3145
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3146 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3147 octave_lexer::handle_superclass_identifier (void)
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3148 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3149 eat_continuation ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3150
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3151 std::string pkg;
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3152 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3153 std::string meth = strip_trailing_whitespace (yytxt);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3154 size_t pos = meth.find ("@");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3155 std::string cls = meth.substr (pos).substr (1);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3156 meth = meth.substr (0, pos - 1);
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3157
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3158 pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3159 if (pos != std::string::npos)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3160 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3161 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3162 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3163 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3164
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3165 int kw_token = (is_keyword_token (meth) \|\| is_keyword_token (cls)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3166 \|\| is_keyword_token (pkg));
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3167 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3168 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3169 error ("method, class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3170 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3171 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3172
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3173 push_token (new token (meth.empty () ? 0 : &(symbol_table::insert (meth)),
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3174 cls.empty () ? 0 : &(symbol_table::insert (cls)),
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3175 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3176 input_line_number, current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3177
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3178 convert_spaces_to_comma = true;
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	3179 current_input_column += flex_yyleng ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3180
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3181 return SUPERCLASSREF;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3182 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3183
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3184 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3185 octave_lexer::handle_meta_identifier (void)
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3186 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3187 eat_continuation ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3188
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3189 std::string pkg;
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3190 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3191 std::string cls = strip_trailing_whitespace (yytxt).substr (1);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3192 size_t pos = cls.find (".");
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3193
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3194 if (pos != std::string::npos)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3195 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3196 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3197 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3198 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3199
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3200 int kw_token = is_keyword_token (cls) \|\| is_keyword_token (pkg);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3201 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3202 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3203 error ("class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3204 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3205 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3206
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3207 push_token (new token (cls.empty () ? 0 : &(symbol_table::insert (cls)),
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3208 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3209 input_line_number, current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3210
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3211 convert_spaces_to_comma = true;
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	3212 current_input_column += flex_yyleng ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3213
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3214 return METAQUERY;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3215 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3216
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	3217 // Figure out exactly what kind of token to return when we have seen
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	3218 // an identifier. Handles keywords. Return -1 if the identifier
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	3219 // should be ignored.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	3220
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3221 int
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3222 octave_lexer::handle_identifier (void)
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3223 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3224 OCTAVE_YYG;
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3225
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3226 bool at_bos = at_beginning_of_statement;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3227
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3228 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3229
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3230 std::string tok = strip_trailing_whitespace (yytxt);
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	3231
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	3232 int c = yytxt[flex_yyleng()-1];
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3233
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3234 bool cont_is_spc = (eat_continuation () != octave_lexer::NO_WHITESPACE);
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3235
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3236 int spc_gobbled = (cont_is_spc \|\| c == ' ' \|\| c == '\t');
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3237
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3238 // If we are expecting a structure element, avoid recognizing
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3239 // keywords and other special names and return STRUCT_ELT, which is
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3240 // a string that is also a valid identifier. But first, we have to
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3241 // decide whether to insert a comma.
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	3242
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3243 if (looking_at_indirect_ref)
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3244 {
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3245 do_comma_insert_check ();
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3246
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3247 maybe_unput_comma (spc_gobbled);
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3248
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3249 push_token (new token (tok, input_line_number,
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3250 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3251
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3252 quote_is_transpose = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3253 convert_spaces_to_comma = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3254 looking_for_object_index = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3255
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	3256 current_input_column += flex_yyleng ();
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3257
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3258 return STRUCT_ELT;
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3259 }
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	3260
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3261 at_beginning_of_statement = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3262
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3263 // The is_keyword_token may reset
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3264 // at_beginning_of_statement. For example, if it sees
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3265 // an else token, then the next token is at the beginning of a
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3266 // statement.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3267
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3268 int kw_token = is_keyword_token (tok);
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3269
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3270 // If we found a keyword token, then the beginning_of_statement flag
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3271 // is already set. Otherwise, we won't be at the beginning of a
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3272 // statement.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3273
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3274 if (looking_at_function_handle)
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3275 {
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3276 if (kw_token)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3277 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3278 error ("function handles may not refer to keywords");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3279
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3280 return LEXICAL_ERROR;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3281 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3282 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3283 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3284 push_token (new token (tok, input_line_number,
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3285 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3286
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	3287 current_input_column += flex_yyleng ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3288 quote_is_transpose = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3289 convert_spaces_to_comma = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3290 looking_for_object_index = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3291
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3292 return FCN_HANDLE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3293 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3294 }
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3295
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	3296 // If we have a regular keyword, return it.
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3297 // Keywords can be followed by identifiers.
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3298
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3299 if (kw_token)
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3300 {
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3301 if (kw_token >= 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3302 {
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	3303 current_input_column += flex_yyleng ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3304 quote_is_transpose = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3305 convert_spaces_to_comma = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3306 looking_for_object_index = false;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3307 }
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3308
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3309 return kw_token;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3310 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3311
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3312 // See if we have a plot keyword (title, using, with, or clear).
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3313
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	3314 int c1 = text_yyinput ();
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3315
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3316 bool next_tok_is_eq = false;
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3317 if (c1 == '=')
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3318 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	3319 int c2 = text_yyinput ();
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3320 xunput (c2);
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3321
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3322 if (c2 != '=')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3323 next_tok_is_eq = true;
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3324 }
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3325
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	3326 xunput (c1);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	3327
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3328 // Kluge alert.
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3329 //
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3330 // If we are looking at a text style function, set up to gobble its
2745 76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe] jwe parents: 2716 diff changeset	3331 // arguments.
76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe] jwe parents: 2716 diff changeset	3332 //
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	3333 // If the following token is '=', or if we are parsing a function
3189 bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe] jwe parents: 3180 diff changeset	3334 // return list or function parameter list, or if we are looking at
bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe] jwe parents: 3180 diff changeset	3335 // something like [ab,cd] = foo (), force the symbol to be inserted
bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe] jwe parents: 3180 diff changeset	3336 // as a variable in the current symbol table.
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3337
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3338 if (! is_variable (tok))
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3339 {
10052 5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	3340 if (at_bos && spc_gobbled && can_be_command (tok)
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	3341 && looks_like_command_arg ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3342 {
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3343 push_start_state (COMMAND_START);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3344 }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3345 else if (next_tok_is_eq
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3346 \|\| looking_at_decl_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3347 \|\| looking_at_return_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3348 \|\| (looking_at_parameter_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3349 && ! looking_at_initializer_expression))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3350 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3351 symbol_table::force_variable (tok);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3352 }
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3353 else if (looking_at_matrix_or_assign_lhs)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3354 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3355 pending_local_variables.insert (tok);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3356 }
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3357 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3358
4234 90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3359 // Find the token in the symbol table. Beware the magic
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3360 // transformation of the end keyword...
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3361
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3362 if (tok == "end")
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	3363 tok = "__end__";
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3364
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3365 push_token (new token (&(symbol_table::insert (tok)),
10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3366 input_line_number, current_input_column));
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3367
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3368 // After seeing an identifer, it is ok to convert spaces to a comma
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3369 // (if needed).
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3370
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3371 convert_spaces_to_comma = true;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3372
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3373 if (! (next_tok_is_eq \|\| YY_START == COMMAND_START))
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3374 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3375 quote_is_transpose = true;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3376
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3377 do_comma_insert_check ();
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3378
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3379 maybe_unput_comma (spc_gobbled);
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3380 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3381
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	3382 current_input_column += flex_yyleng ();
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3383
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3384 if (tok != "__end__")
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3385 looking_for_object_index = true;
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3386
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3387 return NAME;
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3388 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3389
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3390 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3391 octave_lexer::maybe_warn_separator_insert (char sep)
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3392 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	3393 std::string nm = fcn_file_full_name;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3394
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3395 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3396 warning_with_id ("Octave:separator-insert",
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	3397 "potential auto-insertion of '%c' near line %d",
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3398 sep, input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3399 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3400 warning_with_id ("Octave:separator-insert",
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	3401 "potential auto-insertion of '%c' near line %d of file %s",
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3402 sep, input_line_number, nm.c_str ());
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3403 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3404
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3405 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3406 octave_lexer::gripe_single_quote_string (void)
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3407 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	3408 std::string nm = fcn_file_full_name;
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3409
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3410 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3411 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3412 "single quote delimited string near line %d",
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3413 input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3414 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3415 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3416 "single quote delimited string near line %d of file %s",
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3417 input_line_number, nm.c_str ());
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3418 }
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3419
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3420 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3421 octave_lexer::gripe_matlab_incompatible (const std::string& msg)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3422 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	3423 std::string nm = fcn_file_full_name;
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3424
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3425 if (nm.empty ())
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3426 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3427 "potential Matlab compatibility problem: %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3428 msg.c_str ());
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3429 else
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3430 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3431 "potential Matlab compatibility problem: %s near line %d offile %s",
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3432 msg.c_str (), input_line_number, nm.c_str ());
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3433 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3434
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3435 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3436 octave_lexer::maybe_gripe_matlab_incompatible_comment (char c)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3437 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3438 if (c == '#')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3439 gripe_matlab_incompatible ("# used as comment character");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3440 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3441
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3442 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3443 octave_lexer::gripe_matlab_incompatible_continuation (void)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3444 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3445 gripe_matlab_incompatible ("\\ used as line continuation marker");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3446 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3447
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	3448 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3449 octave_lexer::gripe_matlab_incompatible_operator (const std::string& op)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3450 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3451 std::string t = op;
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3452 int n = t.length ();
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3453 if (t[n-1] == '\n')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3454 t.resize (n-1);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3455 gripe_matlab_incompatible (t + " used as operator");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3456 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3457
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3458 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3459 octave_lexer::push_token (token *tok)
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3460 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3461 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3462 lval->tok_val = tok;
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3463 token_stack.push (tok);
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3464 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3465
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3466 token *
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3467 octave_lexer::current_token (void)
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3468 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3469 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3470 return lval->tok_val;
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3471 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3472
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3473 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3474 octave_lexer::display_token (int tok)
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3475 {
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3476 switch (tok)
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3477 {
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3478 case '=': std::cerr << "'='\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3479 case ':': std::cerr << "':'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3480 case '-': std::cerr << "'-'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3481 case '+': std::cerr << "'+'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3482 case '': std::cerr << "''\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3483 case '/': std::cerr << "'/'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3484 case ADD_EQ: std::cerr << "ADD_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3485 case SUB_EQ: std::cerr << "SUB_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3486 case MUL_EQ: std::cerr << "MUL_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3487 case DIV_EQ: std::cerr << "DIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3488 case LEFTDIV_EQ: std::cerr << "LEFTDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3489 case POW_EQ: std::cerr << "POW_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3490 case EMUL_EQ: std::cerr << "EMUL_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3491 case EDIV_EQ: std::cerr << "EDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3492 case ELEFTDIV_EQ: std::cerr << "ELEFTDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3493 case EPOW_EQ: std::cerr << "EPOW_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3494 case AND_EQ: std::cerr << "AND_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3495 case OR_EQ: std::cerr << "OR_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3496 case LSHIFT_EQ: std::cerr << "LSHIFT_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3497 case RSHIFT_EQ: std::cerr << "RSHIFT_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3498 case LSHIFT: std::cerr << "LSHIFT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3499 case RSHIFT: std::cerr << "RSHIFT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3500 case EXPR_AND_AND: std::cerr << "EXPR_AND_AND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3501 case EXPR_OR_OR: std::cerr << "EXPR_OR_OR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3502 case EXPR_AND: std::cerr << "EXPR_AND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3503 case EXPR_OR: std::cerr << "EXPR_OR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3504 case EXPR_NOT: std::cerr << "EXPR_NOT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3505 case EXPR_LT: std::cerr << "EXPR_LT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3506 case EXPR_LE: std::cerr << "EXPR_LE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3507 case EXPR_EQ: std::cerr << "EXPR_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3508 case EXPR_NE: std::cerr << "EXPR_NE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3509 case EXPR_GE: std::cerr << "EXPR_GE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3510 case EXPR_GT: std::cerr << "EXPR_GT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3511 case LEFTDIV: std::cerr << "LEFTDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3512 case EMUL: std::cerr << "EMUL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3513 case EDIV: std::cerr << "EDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3514 case ELEFTDIV: std::cerr << "ELEFTDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3515 case EPLUS: std::cerr << "EPLUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3516 case EMINUS: std::cerr << "EMINUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3517 case QUOTE: std::cerr << "QUOTE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3518 case TRANSPOSE: std::cerr << "TRANSPOSE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3519 case PLUS_PLUS: std::cerr << "PLUS_PLUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3520 case MINUS_MINUS: std::cerr << "MINUS_MINUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3521 case POW: std::cerr << "POW\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3522 case EPOW: std::cerr << "EPOW\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3523
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3524 case NUM:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3525 case IMAG_NUM:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3526 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3527 token *tok_val = current_token ();
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3528 std::cerr << (tok == NUM ? "NUM" : "IMAG_NUM")
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3529 << " [" << tok_val->number () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3530 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3531 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3532
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3533 case STRUCT_ELT:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3534 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3535 token *tok_val = current_token ();
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3536 std::cerr << "STRUCT_ELT [" << tok_val->text () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3537 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3538 break;
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3539
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3540 case NAME:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3541 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3542 token *tok_val = current_token ();
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3543 symbol_table::symbol_record *sr = tok_val->sym_rec ();
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3544 std::cerr << "NAME";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3545 if (sr)
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3546 std::cerr << " [" << sr->name () << "]";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3547 std::cerr << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3548 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3549 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3550
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3551 case END: std::cerr << "END\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3552
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3553 case DQ_STRING:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3554 case SQ_STRING:
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3555 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3556 token *tok_val = current_token ();
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3557
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3558 std::cerr << (tok == DQ_STRING ? "DQ_STRING" : "SQ_STRING")
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3559 << " [" << tok_val->text () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3560 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3561 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3562
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3563 case FOR: std::cerr << "FOR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3564 case WHILE: std::cerr << "WHILE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3565 case DO: std::cerr << "DO\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3566 case UNTIL: std::cerr << "UNTIL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3567 case IF: std::cerr << "IF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3568 case ELSEIF: std::cerr << "ELSEIF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3569 case ELSE: std::cerr << "ELSE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3570 case SWITCH: std::cerr << "SWITCH\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3571 case CASE: std::cerr << "CASE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3572 case OTHERWISE: std::cerr << "OTHERWISE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3573 case BREAK: std::cerr << "BREAK\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3574 case CONTINUE: std::cerr << "CONTINUE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3575 case FUNC_RET: std::cerr << "FUNC_RET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3576 case UNWIND: std::cerr << "UNWIND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3577 case CLEANUP: std::cerr << "CLEANUP\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3578 case TRY: std::cerr << "TRY\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3579 case CATCH: std::cerr << "CATCH\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3580 case GLOBAL: std::cerr << "GLOBAL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3581 case PERSISTENT: std::cerr << "PERSISTENT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3582 case FCN_HANDLE: std::cerr << "FCN_HANDLE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3583 case END_OF_INPUT: std::cerr << "END_OF_INPUT\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3584 case LEXICAL_ERROR: std::cerr << "LEXICAL_ERROR\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3585 case FCN: std::cerr << "FCN\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3586 case CLOSE_BRACE: std::cerr << "CLOSE_BRACE\n"; break;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	3587 case INPUT_FILE: std::cerr << "INPUT_FILE\n"; break;
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3588 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3589 case METAQUERY: std::cerr << "METAQUERY\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3590 case GET: std::cerr << "GET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3591 case SET: std::cerr << "SET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3592 case PROPERTIES: std::cerr << "PROPERTIES\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3593 case METHODS: std::cerr << "METHODS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3594 case EVENTS: std::cerr << "EVENTS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3595 case CLASSDEF: std::cerr << "CLASSDEF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3596 case '\n': std::cerr << "\\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3597 case '\r': std::cerr << "\\r\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3598 case '\t': std::cerr << "TAB\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3599 default:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3600 {
16166 cb80b1d062b1 don't attempt to print unprintable tokens John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	3601 if (tok < 256 && tok > 31)
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3602 std::cerr << static_cast<char> (tok) << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3603 else
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3604 std::cerr << "UNKNOWN(" << tok << ")\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3605 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3606 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3607 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3608 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3609
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3610 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3611 octave_lexer::fatal_error (const char *msg)
16129 053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3612 {
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3613 error (msg);
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3614
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3615 OCTAVE_QUIT;
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3616
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3617 yy_fatal_error (msg, scanner);
16129 053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3618 }
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3619
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3620 void
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16154 diff changeset	3621 octave_lexer::lexer_debug (const char pattern, const char text)
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3622 {
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3623 std::cerr << std::endl;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3624
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3625 display_start_state ();
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3626
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3627 std::cerr << "P: " << pattern << std::endl;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3628 std::cerr << "T: " << text << std::endl;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3629 }
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3630
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3631 void
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3632 octave_lexer::push_start_state (int state)
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3633 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3634 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3635
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3636 start_state_stack.push (state);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3637
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3638 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3639 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3640
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3641 void
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3642 octave_lexer::pop_start_state (void)
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3643 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3644 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3645
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3646 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3647
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3648 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3649 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3650
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3651 void
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3652 octave_lexer::clear_start_state (void)
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3653 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3654 while (! start_state_stack.empty ())
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3655 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3656
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3657 push_start_state (INITIAL);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3658 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3659
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3660 void
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3661 octave_lexer::display_start_state (void) const
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3662 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3663 std::cerr << "S: ";
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3664
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3665 switch (start_state ())
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3666 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3667 case INITIAL:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3668 std::cerr << "INITIAL" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3669 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3670
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3671 case COMMAND_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3672 std::cerr << "COMMAND_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3673 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3674
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3675 case MATRIX_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3676 std::cerr << "MATRIX_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3677 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3678
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3679 case INPUT_FILE_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3680 std::cerr << "INPUT_FILE_BEGIN" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3681 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3682
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3683 case BLOCK_COMMENT_START:
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3684 std::cerr << "BLOCK_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3685 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3686
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3687 case LINE_COMMENT_START:
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3688 std::cerr << "LINE_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3689 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3690
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3691 default:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3692 std::cerr << "UNKNOWN START STATE!" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3693 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3694 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3695 }

Mercurial > octave-nkf

annotate libinterp/parse-tree/lex.ll @ 16228:e19b1632d7c1