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

annotate libinterp/parse-tree/lex.ll @ 18808:4293f49795d9 stable

don't crash on empty script files (bug #42064) * lex.ll (<INPUT_FILE_START><<EOF>>): New pattern.

author	John W. Eaton <jwe@octave.org>
date	Fri, 23 May 2014 12:20:05 -0400
parents	04b4fb217b1a
children	bd1fd4ed3d67 d8abf813c69f

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
17744 d63878346099 maint: Update copyright notices for release. John W. Eaton <jwe@octave.org> parents: 17722 diff changeset	3 Copyright (C) 1993-2013 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
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	54 %x DQ_STRING_START
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	55 %x SQ_STRING_START
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	56
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	57 %{
240 a99f28f5e351 [project @ 1993-11-30 20:24:36 by jwe] jwe parents: 216 diff changeset	58
1341 e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	59 #include <cctype>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	60 #include <cstring>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	61
8950 d865363208d6 include <iosfwd> instead of <iostream> in header files John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	62 #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	63 #include <set>
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	64 #include <sstream>
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	65 #include <string>
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	66 #include <stack>
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	67
4093 5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	68 #include <sys/types.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	69 #include <unistd.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	70
2926 66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe] jwe parents: 2900 diff changeset	71 #include "cmd-edit.h"
4153 6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe] jwe parents: 4131 diff changeset	72 #include "quit.h"
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	73 #include "lo-mappers.h"
2926 66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe] jwe parents: 2900 diff changeset	74
16154 aa5e1e8dce66 * lex.ll: Change y.tab.h to oct-parse.h in comment. John W. Eaton <jwe@octave.org> parents: 16150 diff changeset	75 // 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	76 // 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	77 // 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	78 // 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	79 // times.
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	80
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	81 #include "Cell.h"
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	82 #include "comment-list.h"
2181 138b3c98dc85 [project @ 1996-05-13 18:02:31 by jwe] jwe parents: 2167 diff changeset	83 #include "defun.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	84 #include "error.h"
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	85 #include "gripes.h"
1351 8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	86 #include "input.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	87 #include "lex.h"
2891 1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	88 #include "ov.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	89 #include "parse.h"
2987 ae20b3f37f5e [project @ 1997-05-16 07:05:15 by jwe] jwe parents: 2982 diff changeset	90 #include "pt-all.h"
2891 1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	91 #include "symtab.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	92 #include "token.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	93 #include "toplev.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	94 #include "utils.h"
94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	95 #include "variables.h"
9794 0d4613a736e9 convert build system to use automake and libtool John W. Eaton <jwe@octave.org> parents: 9476 diff changeset	96 #include <oct-parse.h>
2492 06595bc7f2d0 [project @ 1996-11-09 00:13:50 by jwe] jwe parents: 2375 diff changeset	97 #include <oct-gperf.h>
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	98
10426 4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	99 #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	100 // 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	101 // 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	102 // 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	103 #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	104 #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	105 #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	106 #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	107 #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	108 #endif
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	109
2716 2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	110 #if ! (defined (FLEX_SCANNER) \
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	111 && 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	112 && 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	113 #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	114 #endif
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	115
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	116 #define YY_EXTRA_TYPE octave_base_lexer *
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	117 #define curr_lexer yyextra
4753 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 // Arrange to get input via readline.
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	120
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	121 #ifdef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	122 #undef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	123 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	124 #define YY_INPUT(buf, result, max_size) \
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	125 result = curr_lexer->fill_flex_buffer (buf, max_size)
4753 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 // 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	128
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	129 #ifdef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	130 #undef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	131 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	132 #define YY_FATAL_ERROR(msg) \
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	133 (yyget_extra (yyscanner))->fatal_error (msg)
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	134
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	135 #define CMD_OR_OP(PATTERN, TOK, COMPAT) \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	136 \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	137 do \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	138 { \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	139 curr_lexer->lexer_debug (PATTERN); \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	140 \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	141 if (curr_lexer->looks_like_command_arg ()) \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	142 { \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	143 yyless (0); \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	144 curr_lexer->push_start_state (COMMAND_START); \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	145 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	146 else \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	147 { \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	148 return curr_lexer->handle_op_internal (TOK, false, COMPAT); \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	149 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	150 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	151 while (0)
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	152
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	153 #define CMD_OR_COMPUTED_ASSIGN_OP(PATTERN, TOK) \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	154 \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	155 do \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	156 { \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	157 curr_lexer->lexer_debug (PATTERN); \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	158 \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	159 if (curr_lexer->previous_token_may_be_command ()) \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	160 { \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	161 yyless (0); \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	162 curr_lexer->push_start_state (COMMAND_START); \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	163 } \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	164 else \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	165 { \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	166 return curr_lexer->handle_incompatible_op (PATTERN, TOK, false); \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	167 } \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	168 } \
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	169 while (0)
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	170
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	171 #define CMD_OR_UNARY_OP(PATTERN, TOK, COMPAT) \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	172 \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	173 do \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	174 { \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	175 curr_lexer->lexer_debug (PATTERN); \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	176 \
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	177 if (curr_lexer->previous_token_may_be_command ()) \
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	178 { \
16788 f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	179 if (curr_lexer->looks_like_command_arg ()) \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	180 { \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	181 yyless (0); \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	182 curr_lexer->push_start_state (COMMAND_START); \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	183 } \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	184 else \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	185 { \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	186 return curr_lexer->handle_op_internal (TOK, false, COMPAT); \
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	187 } \
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	188 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	189 else \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	190 { \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	191 int tok \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	192 = (COMPAT \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	193 ? curr_lexer->handle_unary_op (TOK) \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	194 : curr_lexer->handle_incompatible_unary_op (TOK)); \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	195 \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	196 if (tok < 0) \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	197 { \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	198 yyless (0); \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	199 curr_lexer->xunput (','); \
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	200 /* Adjust for comma that was not really in the input stream. */ \
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	201 curr_lexer->current_input_column--; \
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	202 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	203 else \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	204 { \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	205 return tok; \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	206 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	207 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	208 } \
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	209 while (0)
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	210
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	211 // We can't rely on the trick used elsewhere of sticking ASCII 1 in
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	212 // the input buffer and recognizing it as a special case because ASCII
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	213 // 1 is a valid character for a character string. If we are at the
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	214 // end of the buffer, ask for more input. If we are at the end of the
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	215 // file, deal with it. Otherwise, just keep going with the text from
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	216 // the current buffer.
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	217 #define HANDLE_STRING_CONTINUATION \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	218 do \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	219 { \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	220 curr_lexer->decrement_promptflag (); \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	221 curr_lexer->input_line_number++; \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	222 curr_lexer->current_input_column = 1; \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	223 \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	224 if (curr_lexer->is_push_lexer ()) \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	225 { \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	226 if (curr_lexer->at_end_of_buffer ()) \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	227 return -1; \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	228 \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	229 if (curr_lexer->at_end_of_file ()) \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	230 return curr_lexer->handle_end_of_input (); \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	231 } \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	232 } \
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	233 while (0)
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	234
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	235
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	236 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	237
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	238 static unsigned int Vtoken_count = 0;
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	239
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	240 // Internal variable for lexer debugging state.
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	241 static bool lexer_debug_flag = false;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	242
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	243 // 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	244 // file that are needed inside the lexer actions.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	245
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	246 static std::string strip_trailing_whitespace (char *s);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	247
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	248 %}
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	249
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	250 D [0-9]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	251 S [ \t]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	252 NL ((\n)\|(\r)\|(\r\n))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	253 Im [iIjJ]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	254 CCHAR [#%]
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
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	259 ANY_EXCEPT_NL [^\r\n]
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	260 ANY_INCLUDING_NL (.\|{NL})
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	261
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	262 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	263
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	264 %{
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	265 // 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	266 // the parser go down a special path.
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	267 %}
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	268
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	269 <INPUT_FILE_START>{ANY_INCLUDING_NL} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	270 curr_lexer->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	271
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	272 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	273
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	274 // 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	275 // as the first token.
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	276 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	277
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	278 curr_lexer->pop_start_state ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	279
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	280 return curr_lexer->show_token (INPUT_FILE);
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	281 }
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	282
18808 4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	283 <INPUT_FILE_START><<EOF>> {
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	284 curr_lexer->lexer_debug ("<INPUT_FILE_START><<EOF>>");
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	285
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	286 // May be reset later if we see "function" or "classdef" appears
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	287 // as the first token.
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	288 curr_lexer->reading_script_file = true;
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	289
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	290 curr_lexer->pop_start_state ();
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	291
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	292 return curr_lexer->show_token (INPUT_FILE);
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	293 }
4293f49795d9 don't crash on empty script files (bug #42064) John W. Eaton <jwe@octave.org> parents: 18531 diff changeset	294
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	295 %{
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	296 // Help and other command-style functions.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	297 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	298
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	299 <COMMAND_START>{NL} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	300 curr_lexer->lexer_debug ("<COMMAND_START>{NL}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	301
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	302 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	303 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	304
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;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 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 ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	309
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	310 return curr_lexer->count_token ('\n');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	311 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	312
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	313 <COMMAND_START>[\;\,] {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	314 curr_lexer->lexer_debug ("<COMMAND_START>[\\;\\,]");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	315
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	316 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	317 curr_lexer->at_beginning_of_statement = true;
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	318
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	319 curr_lexer->pop_start_state ();
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	320
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	321 if (strcmp (yytext, ",") == 0)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	322 return curr_lexer->handle_token (',');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	323 else
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	324 return curr_lexer->handle_token (';');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	325 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	326
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	327 <COMMAND_START>[\"\'] {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	328 curr_lexer->lexer_debug ("<COMMAND_START>[\\\"\\']");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	329
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	330 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	331
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	332 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	333
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	334 curr_lexer->begin_string (yytext[0] == '"'
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	335 ? DQ_STRING_START : SQ_STRING_START);
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	336 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	337
4923 b11223097ad4 [project @ 2004-08-02 16:33:11 by jwe] jwe parents: 4910 diff changeset	338 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]{S} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	339 curr_lexer->lexer_debug ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]{S}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	340
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	341 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	342
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	343 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	344 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	345
16231 2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	346 return curr_lexer->handle_token (tok, SQ_STRING);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	347 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	348
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	349 <MATRIX_START>{S}* {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	350 curr_lexer->lexer_debug ("<MATRIX_START>{S}*");
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	351
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	352 curr_lexer->mark_previous_token_trailing_space ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	353 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	354
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	355 <MATRIX_START>{NL} {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	356 curr_lexer->lexer_debug ("<MATRIX_START>{NL}");
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	357
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	358 curr_lexer->input_line_number++;
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	359 curr_lexer->current_input_column = 1;
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	360
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	361 if (curr_lexer->nesting_level.is_paren ())
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	362 curr_lexer->gripe_matlab_incompatible ("bare newline inside parentheses");
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	363 else
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	364 {
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	365 int tok = curr_lexer->previous_token_value ();
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	366
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	367 if (! (tok == ';' \|\| tok == '[' \|\| tok == '{'))
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	368 {
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	369 curr_lexer->xunput (';');
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	370 // Adjust for semicolon that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	371 curr_lexer->current_input_column--;
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	372 }
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	373 }
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	374 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	375
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	376 %{
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	377 // 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	378 // need to know if the next token is '=' or '=='.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	379 //
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	380 // 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	381 // 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	382 // operator.
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	383 //
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	384 // 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	385 // after seeing a ']' character...
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	386
17861 870f3e12e163 maint: Use phrase "FIXME:" for problem areas in code. Rik <rik@octave.org> parents: 17744 diff changeset	387 // FIXME: we need to handle block comments here.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	388 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	389
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	390 <MATRIX_START>\] {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	391 curr_lexer->lexer_debug ("<MATRIX_START>\\]");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	392
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	393 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	394
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	395 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	396 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	397
16299 c40a8873c2e7 eliminate some unused variables John W. Eaton <jwe@octave.org> parents: 16294 diff changeset	398 curr_lexer->handle_close_bracket (']');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	399
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	400 return curr_lexer->count_token (']');
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	401 }
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	402
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	403 %{
17861 870f3e12e163 maint: Use phrase "FIXME:" for problem areas in code. Rik <rik@octave.org> parents: 17744 diff changeset	404 // FIXME: we need to handle block comments here.
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	405 %}
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	406
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	407 <MATRIX_START>\} {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	408 curr_lexer->lexer_debug ("<MATRIX_START>\\}*");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	409
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	410 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	411
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	412 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	413 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	414
16299 c40a8873c2e7 eliminate some unused variables John W. Eaton <jwe@octave.org> parents: 16294 diff changeset	415 curr_lexer->handle_close_bracket ('}');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	416
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	417 return curr_lexer->count_token ('}');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	418 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	419
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	420 \[ {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	421 curr_lexer->lexer_debug ("\\[");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	422
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	423 bool unput_comma = false;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	424
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	425 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	426 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	427 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	428 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	429
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	430 if (! (tok == '[' \|\| tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	431 \|\| curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	432 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	433 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	434
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	435 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	436 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	437 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	438 curr_lexer->xunput (',');
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	439 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	440 curr_lexer->current_input_column--;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	441 }
5615 d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	442 else
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	443 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	444 curr_lexer->nesting_level.bracket ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	445
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	446 curr_lexer->looking_at_object_index.push_front (false);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	447
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	448 curr_lexer->current_input_column += yyleng;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	449 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	450 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	451
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	452 if (curr_lexer->defining_func
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	453 && ! curr_lexer->parsed_function_name.top ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	454 curr_lexer->looking_at_return_list = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	455 else
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	456 curr_lexer->looking_at_matrix_or_assign_lhs = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	457
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	458 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	459
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	460 curr_lexer->bracketflag++;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	461
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	462 curr_lexer->push_start_state (MATRIX_START);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	463
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	464 return curr_lexer->count_token ('[');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	465 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	466 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	467
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	468 \] {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	469 curr_lexer->lexer_debug ("\\]");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	470
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	471 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	472
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	473 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	474
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	475 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	476 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	477
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	478 return curr_lexer->handle_token (']');
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	479 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	480
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	481 %{
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	482 // Gobble comments.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	483 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	484
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	485 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	486 // 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	487 // 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	488 // block.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	489 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	490
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	491 ^{S}{CCHAR}\{{S}{NL} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	492 curr_lexer->lexer_debug ("^{S}{CCHAR}\\{{S}{NL}");
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	493
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	494 yyless (0);
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	495
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	496 if (curr_lexer->start_state () == LINE_COMMENT_START)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	497 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	498 if (! curr_lexer->comment_text.empty ())
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	499 curr_lexer->finish_comment (octave_comment_elt::full_line);
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	500
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	501 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	502 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	503
16365 8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	504 curr_lexer->decrement_promptflag ();
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	505
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	506 curr_lexer->push_start_state (BLOCK_COMMENT_START);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	507
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	508 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	509
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	510 <BLOCK_COMMENT_START>^{S}{CCHAR}\{{S}{NL} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	511 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}{CCHAR}\\{{S}{NL}");
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	512
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	513 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	514 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	515
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	516 if (curr_lexer->block_comment_nesting_level)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	517 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	518
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	519 curr_lexer->block_comment_nesting_level++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	520 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	521
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	522 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	523 // 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	524 // 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	525 // before storing the comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	526 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	527
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	528 <BLOCK_COMMENT_START>^{S}{CCHAR}\}{S}{NL} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	529 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}{CCHAR}\\}{S}{NL}");
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	530
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	531 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	532 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	533
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	534 if (curr_lexer->block_comment_nesting_level > 1)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	535 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	536 else
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	537 curr_lexer->finish_comment (octave_comment_elt::block);
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	538
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	539 curr_lexer->block_comment_nesting_level--;
16364 1e064963c90a properly recognize nested block comments John W. Eaton <jwe@octave.org> parents: 16363 diff changeset	540
1e064963c90a properly recognize nested block comments John W. Eaton <jwe@octave.org> parents: 16363 diff changeset	541 if (curr_lexer->block_comment_nesting_level == 0)
16365 8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	542 {
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	543 curr_lexer->increment_promptflag ();
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	544
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	545 curr_lexer->pop_start_state ();
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	546 }
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	547 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	548
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	549 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	550 // Body of a block comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	551 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	552
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	553 <BLOCK_COMMENT_START>{ANY_EXCEPT_NL}*{NL} {
b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	554 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>{ANY_EXCEPT_NL}*{NL}");
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	555
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	556 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	557 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	558 curr_lexer->comment_text += yytext;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	559 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	560
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	561 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	562 // Full-line or end-of-line comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	563 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	564
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	565 {S}{CCHAR}{ANY_EXCEPT_NL}{NL} {
b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	566 curr_lexer->lexer_debug ("{S}{CCHAR}{ANY_EXCEPT_NL}{NL}");
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	567
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	568 curr_lexer->push_start_state (LINE_COMMENT_START);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	569 yyless (0);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	570 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	571
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	572 <LINE_COMMENT_START>{S}{CCHAR}{ANY_EXCEPT_NL}{NL} {
b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	573 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{S}{CCHAR}{ANY_EXCEPT_NL}{NL}");
16228 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 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	576 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	577 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	578
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	579 bool have_space = false;
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	580 size_t len = yyleng;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	581 size_t i = 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	582 while (i < len)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	583 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	584 char c = yytext[i];
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	585 if (c == ' ' \|\| c == '\t')
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	586 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	587 have_space = true;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	588 i++;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	589 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	590 else
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	591 break;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	592 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	593
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	594 size_t num_comment_chars = 0;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	595
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	596 while (i < len)
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	597 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	598 char c = yytext[i];
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	599 if (c == '#' \|\| c == '%')
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	600 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	601 num_comment_chars++;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	602 i++;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	603 }
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	604 else
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	605 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	606 }
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	607
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	608 curr_lexer->comment_text += &yytext[i];
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	609
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	610 if (full_line_comment)
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	611 {
17882 cf3f828f401c only allow [%#]{ as block comment start (bug #40513) John W. Eaton <jwe@octave.org> parents: 17861 diff changeset	612 if (num_comment_chars == 1 && yytext[i++] == '{')
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	613 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	614 bool looks_like_block_comment = true;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	615
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	616 while (i < len)
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	617 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	618 char c = yytext[i++];
18134 7af19113ec43 Fix block comments for files with CRLF line endings (bug #40894) John Donoghue <john.donoghue@ieee.org> parents: 17882 diff changeset	619 if (! (c == ' ' \|\| c == '\t' \|\| c == '\n' \|\| c == '\r'))
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	620 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	621 looks_like_block_comment = false;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	622 break;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	623 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	624 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	625
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	626 if (looks_like_block_comment)
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	627 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	628 yyless (0);
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	629
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	630 curr_lexer->finish_comment (octave_comment_elt::full_line);
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	631
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	632 curr_lexer->pop_start_state ();
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	633 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	634 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	635 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	636 else
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	637 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	638 if (have_space)
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	639 curr_lexer->mark_previous_token_trailing_space ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	640
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	641 curr_lexer->finish_comment (octave_comment_elt::end_of_line);
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	642
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	643 curr_lexer->pop_start_state ();
16337 6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	644
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	645 curr_lexer->xunput ('\n');
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	646 curr_lexer->input_line_number--;
16228 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 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	649
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	650 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	651 // End of a block of full-line comments.
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 <LINE_COMMENT_START>{ANY_INCLUDING_NL} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	655 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{ANY_INCLUDING_NL}");
16228 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 curr_lexer->xunput (yytext[0]);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	658
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	659 curr_lexer->finish_comment (octave_comment_elt::full_line);
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	660
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	661 curr_lexer->pop_start_state ();
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 %{
17722 5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	665 // End of a block of full-line comments.
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	666 %}
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	667
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	668 <LINE_COMMENT_START><<EOF>> {
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	669 curr_lexer->lexer_debug ("<LINE_COMMENT_START><<EOF>>");
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	670
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	671 curr_lexer->finish_comment (octave_comment_elt::full_line);
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	672
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	673 curr_lexer->pop_start_state ();
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	674 }
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	675
5b0036d89d4a allow "help dir-name" to work when comment block ends at EOF (bug #40342) John W. Eaton <jwe@octave.org> parents: 17693 diff changeset	676 %{
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	677 // Double-quoted character strings.
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	678 %}
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	679
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	680 <DQ_STRING_START>\"\" {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	681 curr_lexer->lexer_debug ("<DQ_STRING_START>\\\"\\\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	682
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	683 curr_lexer->current_input_column += yyleng;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	684 curr_lexer->string_text += '"';
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	685 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	686
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	687 <DQ_STRING_START>\" {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	688 curr_lexer->lexer_debug ("<DQ_STRING_START>\\\"");
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	689
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	690 curr_lexer->current_input_column++;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	691
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	692 curr_lexer->pop_start_state ();
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	693
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	694 curr_lexer->looking_for_object_index = true;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	695 curr_lexer->at_beginning_of_statement = false;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	696
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	697 curr_lexer->push_token (new token (DQ_STRING,
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	698 curr_lexer->string_text,
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	699 curr_lexer->string_line,
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	700 curr_lexer->string_column));
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	701
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	702 curr_lexer->string_text = "";
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	703
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	704 return curr_lexer->count_token_internal (DQ_STRING);
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	705 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	706
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	707 <DQ_STRING_START>\\[0-7]{1,3} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	708 curr_lexer->lexer_debug ("<DQ_STRING_START>\\\\[0-7]{1,3}");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	709
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	710 curr_lexer->current_input_column += yyleng;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	711
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	712 int result;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	713 sscanf (yytext+1, "%o", &result);
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	714
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	715 if (result > 0xff)
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	716 error ("invalid octal escape sequence in character string");
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	717 else
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	718 curr_lexer->string_text += static_cast<unsigned char> (result);
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	719 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	720
17244 9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	721 <DQ_STRING_START>\\x[0-9a-fA-F]+ {
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	722 curr_lexer->lexer_debug ("<DQ_STRING_START>\\\\x[0-9a-fA-F]+");
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	723
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	724 curr_lexer->current_input_column += yyleng;
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	725
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	726 int result;
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	727 sscanf (yytext+2, "%x", &result);
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	728
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	729 // Truncate the value silently instead of checking the range like
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	730 // we do for octal above. This is to match C/C++ where any number
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	731 // of digits is allowed but the value is implementation-defined if
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	732 // it exceeds the range of the character type.
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	733 curr_lexer->string_text += static_cast<unsigned char> (result);
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	734 }
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	735
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	736 <DQ_STRING_START>"\\a" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	737 curr_lexer->lexer_debug ("<DQ_STRING_START>\"\\\\a\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	738
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	739 curr_lexer->current_input_column += yyleng;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	740 curr_lexer->string_text += '\a';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	741 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	742
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	743 <DQ_STRING_START>"\\b" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	744 curr_lexer->lexer_debug ("<DQ_STRING_START>\"\\\\b\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	745
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	746 curr_lexer->current_input_column += yyleng;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	747 curr_lexer->string_text += '\b';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	748 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	749
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	750 <DQ_STRING_START>"\\f" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	751 curr_lexer->lexer_debug ("<DQ_STRING_START>\"\\\\f\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	752
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	753 curr_lexer->current_input_column += yyleng;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	754 curr_lexer->string_text += '\f';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	755 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	756
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	757 <DQ_STRING_START>"\\n" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	758 curr_lexer->lexer_debug ("<DQ_STRING_START>\"\\\\n\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	759
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	760 curr_lexer->current_input_column += yyleng;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	761 curr_lexer->string_text += '\n';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	762 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	763
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	764 <DQ_STRING_START>"\\r" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	765 curr_lexer->lexer_debug ("<DQ_STRING_START>\"\\\\r\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	766
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	767 curr_lexer->current_input_column += yyleng;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	768 curr_lexer->string_text += '\r';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	769 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	770
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	771 <DQ_STRING_START>"\\t" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	772 curr_lexer->lexer_debug ("<DQ_STRING_START>\"\\\\t\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	773
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	774 curr_lexer->current_input_column += yyleng;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	775 curr_lexer->string_text += '\t';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	776 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	777
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	778 <DQ_STRING_START>"\\v" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	779 curr_lexer->lexer_debug ("<DQ_STRING_START>\"\\\\v\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	780
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	781 curr_lexer->current_input_column += yyleng;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	782 curr_lexer->string_text += '\v';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	783 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	784
18428 4d2e15abe5e7 Disallow comments after continuation in double-quoted strings (bug #41415). Stefan Mahr <dac922@gmx.de> parents: 18319 diff changeset	785 <DQ_STRING_START>(\.\.\.){S}*{NL} {
4d2e15abe5e7 Disallow comments after continuation in double-quoted strings (bug #41415). Stefan Mahr <dac922@gmx.de> parents: 18319 diff changeset	786 curr_lexer->lexer_debug ("<DQ_STRING_START>(\\.\\.\\.){S}*{NL}");
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	787
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	788 static const char *msg = "'...' continuations in double-quoted character strings are obsolete and will not be allowed in a future version of Octave; please use '\\' instead";
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	789
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	790 std::string nm = curr_lexer->fcn_file_full_name;
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	791
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	792 if (nm.empty ())
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	793 warning_with_id ("Octave:deprecated-syntax", "%s", msg);
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	794 else
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	795 warning_with_id ("Octave:deprecated-syntax",
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	796 "%s; near line %d of file '%s'", msg,
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	797 curr_lexer->input_line_number, nm.c_str ());
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	798
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	799 HANDLE_STRING_CONTINUATION;
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	800 }
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	801
18428 4d2e15abe5e7 Disallow comments after continuation in double-quoted strings (bug #41415). Stefan Mahr <dac922@gmx.de> parents: 18319 diff changeset	802 <DQ_STRING_START>\\{S}+{NL} {
4d2e15abe5e7 Disallow comments after continuation in double-quoted strings (bug #41415). Stefan Mahr <dac922@gmx.de> parents: 18319 diff changeset	803 curr_lexer->lexer_debug ("<DQ_STRING_START>\\\\{S}+{NL}");
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	804
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	805 static const char *msg = "white space and comments after continuation markers in double-quoted character strings are obsolete and will not be allowed in a future version of Octave";
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	806
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	807 std::string nm = curr_lexer->fcn_file_full_name;
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	808
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	809 if (nm.empty ())
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	810 warning_with_id ("Octave:deprecated-syntax", "%s", msg);
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	811 else
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	812 warning_with_id ("Octave:deprecated-syntax",
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	813 "%s; near line %d of file '%s'", msg,
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	814 curr_lexer->input_line_number, nm.c_str ());
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	815
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	816 HANDLE_STRING_CONTINUATION;
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	817 }
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	818
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	819 <DQ_STRING_START>\\{NL} {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	820 curr_lexer->lexer_debug ("<DQ_STRING_START>\\\\{NL}");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	821
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	822 HANDLE_STRING_CONTINUATION;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	823 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	824
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	825 <DQ_STRING_START>\\. {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	826 curr_lexer->lexer_debug ("<DQ_STRING_START>\\\\.");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	827
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	828 curr_lexer->current_input_column += yyleng;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	829 curr_lexer->string_text += yytext[1];
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	830 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	831
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	832 <DQ_STRING_START>\. {
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	833 curr_lexer->lexer_debug ("<DQ_STRING_START>\\.");
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	834
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	835 curr_lexer->current_input_column++;
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	836 curr_lexer->string_text += yytext[0];
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	837 }
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	838
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	839 <DQ_STRING_START>[^\.\\\r\n\"]+ {
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	840 curr_lexer->lexer_debug ("<DQ_STRING_START>[^\\.\\\\\\r\\n\\\"]+");
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	841
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	842 curr_lexer->current_input_column += yyleng;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	843 curr_lexer->string_text += yytext;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	844 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	845
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	846 <DQ_STRING_START>{NL} {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	847 curr_lexer->lexer_debug ("<DQ_STRING_START>{NL}");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	848
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	849 curr_lexer->input_line_number++;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	850 curr_lexer->current_input_column = 1;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	851
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	852 error ("unterminated character string constant");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	853
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	854 return LEXICAL_ERROR;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	855 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	856
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	857 %{
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	858 // Single-quoted character strings.
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	859 %}
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	860
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	861 <SQ_STRING_START>\'\' {
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	862 curr_lexer->lexer_debug ("<SQ_STRING_START>\\'\\'");
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	863
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	864 curr_lexer->current_input_column += yyleng;
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	865 curr_lexer->string_text += '\'';
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	866 }
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	867
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	868 <SQ_STRING_START>\' {
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	869 curr_lexer->lexer_debug ("<SQ_STRING_START>\\'");
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	870
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	871 curr_lexer->current_input_column++;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	872
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	873 curr_lexer->pop_start_state ();
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	874
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	875 curr_lexer->looking_for_object_index = true;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	876 curr_lexer->at_beginning_of_statement = false;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	877
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	878 curr_lexer->push_token (new token (SQ_STRING,
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	879 curr_lexer->string_text,
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	880 curr_lexer->string_line,
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	881 curr_lexer->string_column));
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	882
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	883 curr_lexer->string_text = "";
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	884
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	885 return curr_lexer->count_token_internal (SQ_STRING);
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	886 }
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	887
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	888 <SQ_STRING_START>[^\'\n\r]+ {
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	889 curr_lexer->lexer_debug ("<SQ_STRING_START>[^\\'\\n\\r]+");
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	890
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	891 curr_lexer->current_input_column += yyleng;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	892 curr_lexer->string_text += yytext;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	893 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	894
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	895 <SQ_STRING_START>{NL} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	896 curr_lexer->lexer_debug ("<SQ_STRING_START>{NL}");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	897
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	898 curr_lexer->input_line_number++;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	899 curr_lexer->current_input_column = 1;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	900
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	901 error ("unterminated character string constant");
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	902
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	903 return LEXICAL_ERROR;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	904 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	905
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	906 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	907 // Imaginary numbers.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	908 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	909
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	910 {NUMBER}{Im} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	911 curr_lexer->lexer_debug ("{NUMBER}{Im}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	912
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	913 if (curr_lexer->previous_token_may_be_command ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	914 && curr_lexer->space_follows_previous_token ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	915 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	916 yyless (0);
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	917 curr_lexer->push_start_state (COMMAND_START);
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	918 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	919 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	920 {
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	921 int tok = curr_lexer->previous_token_value ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	922
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	923 if (curr_lexer->whitespace_is_significant ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	924 && curr_lexer->space_follows_previous_token ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	925 && ! (tok == '[' \|\| tok == '{'
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	926 \|\| curr_lexer->previous_token_is_binop ()))
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	927 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	928 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	929 unput (',');
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	930 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	931 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	932 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	933 curr_lexer->handle_number ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	934 return curr_lexer->count_token_internal (IMAG_NUM);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	935 }
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	936 }
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	937 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	938
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	939 %{
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	940 // 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	941 // the constant.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	942 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	943
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	944 {D}+/\.[\*/\\^\'] \|
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	945 {NUMBER} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	946 curr_lexer->lexer_debug ("{D}+/\\.[\\*/\\\\^\\']\|{NUMBER}");
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	947
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	948 if (curr_lexer->previous_token_may_be_command ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	949 && curr_lexer->space_follows_previous_token ())
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	950 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	951 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	952 curr_lexer->push_start_state (COMMAND_START);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	953 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	954 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	955 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	956 int tok = curr_lexer->previous_token_value ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	957
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	958 if (curr_lexer->whitespace_is_significant ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	959 && curr_lexer->space_follows_previous_token ()
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	960 && ! (tok == '[' \|\| tok == '{'
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	961 \|\| curr_lexer->previous_token_is_binop ()))
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	962 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	963 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	964 unput (',');
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	965 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	966 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	967 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	968 curr_lexer->handle_number ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	969 return curr_lexer->count_token_internal (NUM);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	970 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	971 }
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	972 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	973
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	974 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	975 // 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	976 // the <MATRIX_START> start state code above.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	977 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	978
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	979 {S}+ {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	980 curr_lexer->current_input_column += yyleng;
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	981
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	982 curr_lexer->mark_previous_token_trailing_space ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	983 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	984
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	985 %{
17247 e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	986 // Continuation lines. Allow arbitrary text after continuations.
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	987 %}
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	988
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	989 \.\.\.{ANY_EXCEPT_NL}*{NL} {
b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	990 curr_lexer->lexer_debug ("\\.\\.\\.{ANY_EXCEPT_NL}*{NL}");
17247 e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	991
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	992 curr_lexer->handle_continuation ();
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	993 }
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	994
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	995 %{
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	996 // Deprecated C preprocessor style continuation markers.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	997 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	998
17246 8be8a65d3ca8 Ignore anything after the continuation marker '...' (bug #38653) Stefan Mahr <dac922@gmx.de> parents: 17244 diff changeset	999 \\{S}*{NL} \|
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	1000 \\{S}{CCHAR}{ANY_EXCEPT_NL}{NL} {
b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	1001 curr_lexer->lexer_debug ("\\\\{S}{NL}\|\\\\{S}{CCHAR}{ANY_EXCEPT_NL}*{NL}");
17247 e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1002
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1003 static const char *msg = "using continuation marker \\ outside of double quoted strings is deprecated and will be removed in a future version of Octave";
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1004
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1005 std::string nm = curr_lexer->fcn_file_full_name;
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1006
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1007 if (nm.empty ())
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1008 warning_with_id ("Octave:deprecated-syntax", "%s", msg);
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1009 else
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1010 warning_with_id ("Octave:deprecated-syntax",
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1011 "%s; near line %d of file '%s'", msg,
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1012 curr_lexer->input_line_number, nm.c_str ());
17343 6470a113eae2 correctly handle deprecated \ continuation markers John W. Eaton <jwe@octave.org> parents: 17247 diff changeset	1013
6470a113eae2 correctly handle deprecated \ continuation markers John W. Eaton <jwe@octave.org> parents: 17247 diff changeset	1014 curr_lexer->handle_continuation ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1015 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1016
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1017 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1018 // End of file.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1019 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1020
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1021 <<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	1022 return curr_lexer->handle_end_of_input ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1023 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1024
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1025 %{
16259 0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1026 // Identifiers.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1027 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1028
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1029 {IDENT} {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1030 curr_lexer->lexer_debug ("{IDENT}");
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1031
16259 0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1032 int tok = curr_lexer->previous_token_value ();
0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1033
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1034 if (curr_lexer->whitespace_is_significant ()
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1035 && curr_lexer->space_follows_previous_token ()
16259 0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1036 && ! (tok == '[' \|\| tok == '{'
0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1037 \|\| curr_lexer->previous_token_is_binop ()))
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1038 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1039 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1040 unput (',');
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1041 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1042 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1043 {
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1044 if (! curr_lexer->looking_at_decl_list
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1045 && curr_lexer->previous_token_may_be_command ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1046 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1047 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1048 curr_lexer->push_start_state (COMMAND_START);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1049 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1050 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1051 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1052 int id_tok = curr_lexer->handle_identifier ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1053
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1054 if (id_tok >= 0)
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1055 return curr_lexer->count_token_internal (id_tok);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1056 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1057 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1058 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1059
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1060 %{
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1061 // Superclass method identifiers.
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1062 %}
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1063
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1064 {IDENT}@{IDENT} \|
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1065 {IDENT}@{IDENT}.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1066 curr_lexer->lexer_debug ("{IDENT}@{IDENT}\|{IDENT}@{IDENT}.{IDENT}");
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1067
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1068 if (curr_lexer->previous_token_may_be_command ())
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1069 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1070 yyless (0);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1071 curr_lexer->push_start_state (COMMAND_START);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1072 }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1073 else
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1074 {
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1075 int id_tok = curr_lexer->handle_superclass_identifier ();
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1076
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1077 if (id_tok >= 0)
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1078 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1079 curr_lexer->looking_for_object_index = true;
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1080
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1081 return curr_lexer->count_token_internal (SUPERCLASSREF);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1082 }
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1083 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1084 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1085
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1086 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1087 // Metaclass query
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1088 %}
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1089
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1090 \?{IDENT} \|
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1091 \?{IDENT}\.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1092 curr_lexer->lexer_debug ("\\?{IDENT}\|\\?{IDENT}\\.{IDENT}");
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1093
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1094 if (curr_lexer->previous_token_may_be_command ()
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1095 && curr_lexer->space_follows_previous_token ())
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1096 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1097 yyless (0);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1098 curr_lexer->push_start_state (COMMAND_START);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1099 }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1100 else
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1101 {
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1102 int id_tok = curr_lexer->handle_meta_identifier ();
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1103
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1104 if (id_tok >= 0)
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1105 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1106 curr_lexer->looking_for_object_index = true;
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1107
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1108 return curr_lexer->count_token_internal (METAQUERY);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1109 }
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1110 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1111 }
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1112
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	1113 "@" {
18492 e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1114 curr_lexer->lexer_debug ("@");
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1115
16334 06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1116 if (curr_lexer->previous_token_may_be_command ()
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1117 && curr_lexer->space_follows_previous_token ())
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1118 {
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1119 yyless (0);
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1120 curr_lexer->push_start_state (COMMAND_START);
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1121 }
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1122 else
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1123 {
18492 e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1124 int tok = curr_lexer->previous_token_value ();
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1125
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1126 if (curr_lexer->whitespace_is_significant ()
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1127 && curr_lexer->space_follows_previous_token ()
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1128 && ! (tok == '[' \|\| tok == '{'
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1129 \|\| curr_lexer->previous_token_is_binop ()))
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1130 {
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1131 yyless (0);
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1132 unput (',');
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1133 }
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1134 else
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1135 {
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1136 curr_lexer->current_input_column++;
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1137
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1138 curr_lexer->looking_at_function_handle++;
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1139 curr_lexer->looking_for_object_index = false;
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1140 curr_lexer->at_beginning_of_statement = false;
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1141
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1142 return curr_lexer->count_token ('@');
e4c319ed2414 Fix regression, allow space-separated cell array of function handles (bug #41569) Mike Miller <mtmiller@ieee.org> parents: 18428 diff changeset	1143 }
16334 06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1144 }
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	1145 }
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	1146
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	1147 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1148 // 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	1149 // 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	1150 // 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	1151 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1152
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1153 {NL} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1154 curr_lexer->lexer_debug ("{NL}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1155
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1156 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1157 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1158
16309 e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1159 if (curr_lexer->nesting_level.is_paren ())
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1160 {
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1161 curr_lexer->at_beginning_of_statement = false;
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1162 curr_lexer->gripe_matlab_incompatible
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1163 ("bare newline inside parentheses");
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1164 }
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1165 else if (curr_lexer->nesting_level.none ()
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1166 \|\| curr_lexer->nesting_level.is_anon_fcn_body ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1167 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1168 curr_lexer->at_beginning_of_statement = true;
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1169 return curr_lexer->count_token ('\n');
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1170 }
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1171 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	1172 return LEXICAL_ERROR;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1173 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1174
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1175 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1176 // 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	1177 // operator.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1178 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1179
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1180 "'" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1181 curr_lexer->lexer_debug ("'");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1182
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1183 if (curr_lexer->previous_token_may_be_command ()
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1184 && curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1185 {
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1186 curr_lexer->current_input_column++;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1187 curr_lexer->push_start_state (COMMAND_START);
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1188 curr_lexer->begin_string (SQ_STRING_START);
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1189 }
16681 d3619d4d267c recognize character string at beginning of statement (bug #38926, #38958) John W. Eaton <jwe@octave.org> parents: 16680 diff changeset	1190 else if (curr_lexer->at_beginning_of_statement)
d3619d4d267c recognize character string at beginning of statement (bug #38926, #38958) John W. Eaton <jwe@octave.org> parents: 16680 diff changeset	1191 {
d3619d4d267c recognize character string at beginning of statement (bug #38926, #38958) John W. Eaton <jwe@octave.org> parents: 16680 diff changeset	1192 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1193 curr_lexer->begin_string (SQ_STRING_START);
16681 d3619d4d267c recognize character string at beginning of statement (bug #38926, #38958) John W. Eaton <jwe@octave.org> parents: 16680 diff changeset	1194 }
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1195 else
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1196 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1197 int tok = curr_lexer->previous_token_value ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1198
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1199 if (curr_lexer->whitespace_is_significant ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1200 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1201 if (curr_lexer->space_follows_previous_token ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1202 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1203 if (tok == '[' \|\| tok == '{'
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1204 \|\| curr_lexer->previous_token_is_binop ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1205 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1206 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1207 curr_lexer->begin_string (SQ_STRING_START);
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1208 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1209 else
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1210 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1211 yyless (0);
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1212 curr_lexer->xunput (',');
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1213 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1214 curr_lexer->current_input_column--;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1215 }
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1216 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1217 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1218 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1219 if (tok == '[' \|\| tok == '{'
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1220 \|\| curr_lexer->previous_token_is_binop ()
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1221 \|\| curr_lexer->previous_token_is_keyword ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1222 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1223 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1224 curr_lexer->begin_string (SQ_STRING_START);
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1225 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1226 else
16284 09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE. John W. Eaton <jwe@octave.org> parents: 16283 diff changeset	1227 return curr_lexer->count_token (HERMITIAN);
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1228 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1229 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1230 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1231 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1232 if (! tok \|\| tok == '[' \|\| tok == '{' \|\| tok == '('
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1233 \|\| curr_lexer->previous_token_is_binop ()
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1234 \|\| curr_lexer->previous_token_is_keyword ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1235 {
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1236 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1237 curr_lexer->begin_string (SQ_STRING_START);
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1238 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1239 else
16284 09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE. John W. Eaton <jwe@octave.org> parents: 16283 diff changeset	1240 return curr_lexer->count_token (HERMITIAN);
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1241 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1242 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1243 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1244
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1245 %{
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1246 // Double quotes always begin strings.
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1247 %}
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1248
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	1249 \" {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	1250 curr_lexer->lexer_debug ("\\\"");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1251
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1252 if (curr_lexer->previous_token_may_be_command ()
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1253 && curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1254 {
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1255 curr_lexer->current_input_column++;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1256 curr_lexer->push_start_state (COMMAND_START);
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1257 curr_lexer->begin_string (DQ_STRING_START);
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1258 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1259 else
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1260 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1261 int tok = curr_lexer->previous_token_value ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1262
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1263 if (curr_lexer->whitespace_is_significant ())
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1264 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1265 if (curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1266 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1267 if (tok == '[' \|\| tok == '{'
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1268 \|\| curr_lexer->previous_token_is_binop ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1269 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1270 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1271 curr_lexer->begin_string (DQ_STRING_START);
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1272 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1273 else
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1274 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1275 yyless (0);
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1276 curr_lexer->xunput (',');
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1277 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1278 curr_lexer->current_input_column--;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1279 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1280 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1281 else
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1282 {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1283 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1284 curr_lexer->begin_string (DQ_STRING_START);
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1285 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1286 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1287 else
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1288 {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1289 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1290 curr_lexer->begin_string (DQ_STRING_START);
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1291 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1292 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1293 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1294
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1295 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1296 // Other operators.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1297 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1298
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1299 ":" { CMD_OR_OP (":", ':', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1300 ".+" { CMD_OR_OP (".+", EPLUS, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1301 ".-" { CMD_OR_OP (".-", EMINUS, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1302 "." { CMD_OR_OP (".", EMUL, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1303 "./" { CMD_OR_OP ("./", EDIV, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1304 ".\\" { CMD_OR_OP (".\\", ELEFTDIV, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1305 ".^" { CMD_OR_OP (".^", EPOW, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1306 "." { CMD_OR_OP (".", EPOW, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1307 "<=" { CMD_OR_OP ("<=", EXPR_LE, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1308 "==" { CMD_OR_OP ("==", EXPR_EQ, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1309 "~=" { CMD_OR_OP ("~=", EXPR_NE, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1310 "!=" { CMD_OR_OP ("!=", EXPR_NE, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1311 ">=" { CMD_OR_OP (">=", EXPR_GE, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1312 "&" { CMD_OR_OP ("&", EXPR_AND, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1313 "\|" { CMD_OR_OP ("\|", EXPR_OR, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1314 "<" { CMD_OR_OP ("<", EXPR_LT, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1315 ">" { CMD_OR_OP (">", EXPR_GT, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1316 "" { CMD_OR_OP ("", '*', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1317 "/" { CMD_OR_OP ("/", '/', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1318
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1319 %{
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1320 // In Matlab, '\' may also trigger command syntax.
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1321 %}
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1322
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1323 "\\" { return curr_lexer->handle_op ("\\", LEFTDIV); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1324
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1325 "^" { CMD_OR_OP ("^", POW, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1326 "" { CMD_OR_OP ("", POW, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1327 "&&" { CMD_OR_OP ("&&", EXPR_AND_AND, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1328 "\|\|" { CMD_OR_OP ("\|\|", EXPR_OR_OR, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1329 "<<" { CMD_OR_OP ("<<", LSHIFT, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1330 ">>" { CMD_OR_OP (">>", RSHIFT, false); }
16265 71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1331
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1332 ";" {
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1333 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1334 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1335 \|\| curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1336
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1337 return curr_lexer->handle_op (";", ';', at_beginning_of_statement);
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1338 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1339
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1340 "+" { CMD_OR_UNARY_OP ("+", '+', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1341 "-" { CMD_OR_UNARY_OP ("-", '-', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1342
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1343 "~" { CMD_OR_UNARY_OP ("~", EXPR_NOT, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1344 "!" { CMD_OR_UNARY_OP ("!", EXPR_NOT, false); }
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1345
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1346 "," {
16265 71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1347 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1348 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1349 \|\| curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1350
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1351 return curr_lexer->handle_op (",", ',', at_beginning_of_statement);
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1352 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1353
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1354 ".'" {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1355 return curr_lexer->handle_op (".'", TRANSPOSE, false);
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1356 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1357
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1358 "++" { CMD_OR_UNARY_OP ("++", PLUS_PLUS, false); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1359 "--" { CMD_OR_UNARY_OP ("--", MINUS_MINUS, false); }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1360
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1361 "(" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1362 curr_lexer->lexer_debug ("(");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1363
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1364 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1365
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1366 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1367 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1368 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1369 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1370
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1371 if (! (tok == '[' \|\| tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1372 \|\| curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1373 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1374 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1375
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1376 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1377 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1378 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1379 curr_lexer->xunput (',');
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1380 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1381 curr_lexer->current_input_column--;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1382 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1383 else
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1384 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1385 // If we are looking for an object index, then push TRUE for
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1386 // looking_at_object_index. Otherwise, just push whatever state
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1387 // is current (so that we can pop it off the stack when we find
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1388 // the matching close paren).
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1389
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1390 curr_lexer->looking_at_object_index.push_front
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1391 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1392
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1393 curr_lexer->looking_at_indirect_ref = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1394 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1395 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1396
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1397 curr_lexer->nesting_level.paren ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1398 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1399
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1400 return curr_lexer->handle_token ('(');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1401 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1402 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1403
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1404 ")" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1405 curr_lexer->lexer_debug (")");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1406
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1407 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1408 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1409
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1410 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	1411
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1412 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	1413 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	1414
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1415 if (curr_lexer->looking_at_anon_fcn_args)
16265 71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1416 {
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1417 curr_lexer->looking_at_anon_fcn_args = false;
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1418 curr_lexer->nesting_level.anon_fcn_body ();
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1419 }
13237 1bfca2bbea8b fix parsing of anonymous functions inside cell array lists. John W. Eaton <jwe@octave.org> parents: 12801 diff changeset	1420
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1421 return curr_lexer->count_token (')');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1422 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1423
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1424 "." {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1425 curr_lexer->lexer_debug (".");
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1426
16325 fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1427 if (curr_lexer->previous_token_may_be_command ()
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1428 && curr_lexer->space_follows_previous_token ())
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1429 {
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1430 yyless (0);
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1431 curr_lexer->push_start_state (COMMAND_START);
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1432 }
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1433 else
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1434 {
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1435 curr_lexer->looking_for_object_index = false;
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1436 curr_lexer->at_beginning_of_statement = false;
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1437
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1438 return curr_lexer->handle_token ('.');
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1439 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1440 }
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1441
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1442 %{
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1443 // = and op= operators.
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1444 %}
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1445
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1446 "=" {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1447 curr_lexer->maybe_mark_previous_token_as_variable ();
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1448
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1449 return curr_lexer->handle_op ("=", '=');
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1450 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1451
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1452 "+=" { CMD_OR_COMPUTED_ASSIGN_OP ("+=", ADD_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1453 "-=" { CMD_OR_COMPUTED_ASSIGN_OP ("-=", SUB_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1454 "=" { CMD_OR_COMPUTED_ASSIGN_OP ("=", MUL_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1455 "/=" { CMD_OR_COMPUTED_ASSIGN_OP ("/=", DIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1456 "\\=" { CMD_OR_COMPUTED_ASSIGN_OP ("\\=", LEFTDIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1457 ".+=" { CMD_OR_COMPUTED_ASSIGN_OP (".+=", ADD_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1458 ".-=" { CMD_OR_COMPUTED_ASSIGN_OP (".-=", SUB_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1459 ".=" { CMD_OR_COMPUTED_ASSIGN_OP (".=", EMUL_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1460 "./=" { CMD_OR_COMPUTED_ASSIGN_OP ("./=", EDIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1461 ".\\=" { CMD_OR_COMPUTED_ASSIGN_OP (".\\=", ELEFTDIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1462 "^=" { CMD_OR_COMPUTED_ASSIGN_OP ("^=", POW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1463 "**=" { CMD_OR_COMPUTED_ASSIGN_OP ("^=", POW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1464 ".^=" { CMD_OR_COMPUTED_ASSIGN_OP (".^=", EPOW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1465 ".**=" { CMD_OR_COMPUTED_ASSIGN_OP (".^=", EPOW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1466 "&=" { CMD_OR_COMPUTED_ASSIGN_OP ("&=", AND_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1467 "\|=" { CMD_OR_COMPUTED_ASSIGN_OP ("\|=", OR_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1468 "<<=" { CMD_OR_COMPUTED_ASSIGN_OP ("<<=", LSHIFT_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1469 ">>=" { CMD_OR_COMPUTED_ASSIGN_OP (">>=", RSHIFT_EQ); }
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1470
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1471 %{
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1472 // In Matlab, '{' may also trigger command syntax.
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1473 %}
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1474
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1475 "{" {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1476 curr_lexer->lexer_debug ("{");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1477
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1478 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1479
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1480 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1481 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1482 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1483 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1484
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1485 if (! (tok == '[' \|\| tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1486 \|\| curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1487 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1488 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1489
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1490 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1491 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1492 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1493 curr_lexer->xunput (',');
16281 1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1494 // Adjust for comma that was not really in the input stream.
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	1495 curr_lexer->current_input_column--;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1496 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1497 else
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1498 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1499 curr_lexer->nesting_level.brace ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1500
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1501 curr_lexer->looking_at_object_index.push_front
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1502 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1503
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1504 curr_lexer->current_input_column += yyleng;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1505 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1506 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1507
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1508 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1509
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1510 curr_lexer->braceflag++;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1511
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1512 curr_lexer->push_start_state (MATRIX_START);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1513
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1514 return curr_lexer->count_token ('{');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1515 }
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1516 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1517
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1518 "}" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1519 curr_lexer->lexer_debug ("}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1520
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1521 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	1522
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1523 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	1524 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	1525
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1526 curr_lexer->nesting_level.remove ();
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1527
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1528 return curr_lexer->handle_token ('}');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1529 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1530
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1531 %{
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1532 // Unrecognized input is a lexical error.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1533 %}
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1534
2042 31f4f775b8c6 [project @ 1996-03-28 09:06:28 by jwe] jwe parents: 1994 diff changeset	1535 . {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1536 curr_lexer->lexer_debug (".");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1537
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1538 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	1539
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1540 int c = curr_lexer->text_yyinput ();
4248 eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1541
16294 0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1542 if (c == 1)
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1543 return -1;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1544 else if (c == EOF)
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1545 return curr_lexer->handle_end_of_input ();
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1546 else
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1547 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1548 curr_lexer->current_input_column++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1549
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	1550 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	1551 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	1552 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	1553
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1554 return LEXICAL_ERROR;
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1555 }
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1556 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1557
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1558 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1559
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1560 static void
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1561 display_character (char c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1562 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1563 if (isgraph (c))
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1564 std::cerr << c;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1565 else
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1566 switch (c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1567 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1568 case 0:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1569 std::cerr << "NUL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1570 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1571
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1572 case 1:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1573 std::cerr << "SOH";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1574 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1575
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1576 case 2:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1577 std::cerr << "STX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1578 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1579
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1580 case 3:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1581 std::cerr << "ETX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1582 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1583
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1584 case 4:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1585 std::cerr << "EOT";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1586 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1587
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1588 case 5:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1589 std::cerr << "ENQ";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1590 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1591
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1592 case 6:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1593 std::cerr << "ACK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1594 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1595
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1596 case 7:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1597 std::cerr << "\\a";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1598 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1599
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1600 case 8:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1601 std::cerr << "\\b";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1602 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1603
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1604 case 9:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1605 std::cerr << "\\t";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1606 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1607
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1608 case 10:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1609 std::cerr << "\\n";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1610 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1611
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1612 case 11:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1613 std::cerr << "\\v";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1614 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1615
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1616 case 12:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1617 std::cerr << "\\f";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1618 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1619
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1620 case 13:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1621 std::cerr << "\\r";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1622 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1623
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1624 case 14:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1625 std::cerr << "SO";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1626 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1627
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1628 case 15:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1629 std::cerr << "SI";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1630 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1631
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1632 case 16:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1633 std::cerr << "DLE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1634 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1635
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1636 case 17:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1637 std::cerr << "DC1";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1638 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1639
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1640 case 18:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1641 std::cerr << "DC2";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1642 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1643
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1644 case 19:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1645 std::cerr << "DC3";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1646 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1647
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1648 case 20:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1649 std::cerr << "DC4";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1650 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1651
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1652 case 21:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1653 std::cerr << "NAK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1654 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1655
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1656 case 22:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1657 std::cerr << "SYN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1658 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1659
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1660 case 23:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1661 std::cerr << "ETB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1662 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1663
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1664 case 24:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1665 std::cerr << "CAN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1666 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1667
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1668 case 25:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1669 std::cerr << "EM";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1670 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1671
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1672 case 26:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1673 std::cerr << "SUB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1674 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1675
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1676 case 27:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1677 std::cerr << "ESC";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1678 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1679
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1680 case 28:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1681 std::cerr << "FS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1682 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1683
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1684 case 29:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1685 std::cerr << "GS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1686 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1687
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1688 case 30:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1689 std::cerr << "RS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1690 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1691
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1692 case 31:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1693 std::cerr << "US";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1694 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1695
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1696 case 32:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1697 std::cerr << "SPACE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1698 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1699
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1700 case 127:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1701 std::cerr << "DEL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1702 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1703 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1704 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1705
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1706 bool
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1707 is_keyword (const std::string& s)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1708 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1709 // Parsing function names like "set.property_name" inside
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1710 // 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	1711 // "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	1712 // 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	1713 // 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	1714
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1715 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	1716 && ! (s == "set" \|\| s == "get"));
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1717 }
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 DEFUN (iskeyword, args, ,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1720 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1721 @deftypefn {Built-in Function} {} iskeyword ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1722 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1723 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	1724 is omitted, return a list of keywords.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1725 @seealso{isvarname, exist}\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1726 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1727 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1728 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1729
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1730 int argc = args.length () + 1;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1731
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1732 string_vector argv = args.make_argv ("iskeyword");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1733
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1734 if (error_state)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1735 return retval;
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 if (argc == 1)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1738 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1739 // 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	1740 // is_keyword function for additional details.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1741
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1742 string_vector lst (TOTAL_KEYWORDS);
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 int j = 0;
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 for (int i = 0; i < TOTAL_KEYWORDS; i++)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1747 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1748 std::string tmp = wordlist[i].name;
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 if (! (tmp == "set" \|\| tmp == "get"))
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1751 lst[j++] = tmp;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1752 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1753
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1754 lst.resize (j);
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 retval = Cell (lst.sort ());
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 else if (argc == 2)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1759 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1760 retval = is_keyword (argv[1]);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1761 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1762 else
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1763 print_usage ();
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1764
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1765 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1766 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1767
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1768 /*
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1769
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1770 %!assert (iskeyword ("for"))
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1771 %!assert (iskeyword ("fort"), false)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1772 %!assert (iskeyword ("fft"), false)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1773
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1774 */
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1775
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1776 // Used to delete trailing white space from tokens.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1777
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1778 static std::string
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1779 strip_trailing_whitespace (char *s)
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 std::string retval = s;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1782
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1783 size_t pos = retval.find_first_of (" \t");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1784
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1785 if (pos != std::string::npos)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1786 retval.resize (pos);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1787
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1788 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1789 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1790
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1791 DEFUN (__display_tokens__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1792 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1793 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1794 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	1795 lexer displays tokens as they are read.\n\
18531 04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1796 @seealso{__lexer_debug_flag__, __token_count__}\n\
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1797 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1798 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1799 return SET_INTERNAL_VARIABLE (display_tokens);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1800 }
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 DEFUN (__token_count__, , ,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1803 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1804 @deftypefn {Built-in Function} {} __token_count__ ()\n\
18531 04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1805 Return the number of language tokens processed since Octave startup.\n\
04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1806 @seealso{__lexer_debug_flag__, __display_tokens__}\n\
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1807 @end deftypefn")
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 return octave_value (Vtoken_count);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1810 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1811
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1812 DEFUN (__lexer_debug_flag__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1813 "-- texinfo --\n\
18531 04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1814 @deftypefn {Built-in Function} {@var{val} =} __lexer_debug_flag__ ()\n\
04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1815 @deftypefnx {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val})\n\
04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1816 Query or set the internal flag that determines whether Octave's lexer prints\n\
04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1817 debug information as it processes an expression.\n\
04b4fb217b1a doc: Improve documentation strings in parse-tree directory. Rik <rik@octave.org> parents: 18492 diff changeset	1818 @seealso{__display_tokens__, __token_count__, __parse_debug_flag__}\n\
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1819 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1820 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1821 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1822
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1823 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	1824 "__lexer_debug_flag__");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1825
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1826 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1827 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1828
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1829 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	1830 {
16230 4bf907906134 use a queue to hold tokens in the lexer John W. Eaton <jwe@octave.org> parents: 16229 diff changeset	1831 tokens.clear ();
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1832 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1833
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1834 void
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1835 lexical_feedback::init (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1836 {
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1837 // 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	1838 // index.
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1839 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	1840 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1841
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1842 void
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1843 lexical_feedback::reset (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1844 {
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1845 end_of_input = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1846 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	1847 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	1848 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	1849 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	1850 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	1851 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	1852 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	1853 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	1854 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	1855 parsing_class_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1856 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	1857 parsing_classdef = false;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1858 force_script = false;
16199 810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1859 reading_fcn_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1860 reading_script_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1861 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	1862 input_line_number = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1863 current_input_column = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1864 bracketflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1865 braceflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1866 looping = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1867 defining_func = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1868 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	1869 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	1870 token_count = 0;
16207 0467d68ca891 move current_input_line to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16203 diff changeset	1871 current_input_line = "";
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1872 comment_text = "";
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1873 help_text = "";
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1874 string_text = "";
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1875 string_line = 0;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1876 string_column = 0;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1877 fcn_file_name = "";
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1878 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	1879 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	1880 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	1881
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1882 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	1883 parsed_function_name.pop ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1884
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1885 nesting_level.reset ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1886
16230 4bf907906134 use a queue to hold tokens in the lexer John W. Eaton <jwe@octave.org> parents: 16229 diff changeset	1887 tokens.clear ();
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1888 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1889
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1890 int
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1891 lexical_feedback::previous_token_value (void) const
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1892 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1893 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1894 return tok ? tok->token_value () : 0;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1895 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1896
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1897 bool
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1898 lexical_feedback::previous_token_value_is (int tok_val) const
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1899 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1900 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1901 return tok ? tok->token_value_is (tok_val) : false;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1902 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1903
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1904 void
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1905 lexical_feedback::mark_previous_token_trailing_space (void)
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1906 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1907 token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1908 if (tok && ! previous_token_value_is ('\n'))
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1909 tok->mark_trailing_space ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1910 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1911
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1912 bool
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1913 lexical_feedback::space_follows_previous_token (void) const
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1914 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1915 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1916 return tok ? tok->space_follows_token () : false;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1917 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1918
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1919 bool
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1920 lexical_feedback::previous_token_is_binop (void) const
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1921 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1922 int tok = previous_token_value ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1923
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1924 return (tok == '+' \|\| tok == '-' \|\| tok == '@'
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1925 \|\| tok == ',' \|\| tok == ';' \|\| tok == '*' \|\| tok == '/'
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1926 \|\| tok == ':' \|\| tok == '=' \|\| tok == ADD_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1927 \|\| tok == AND_EQ \|\| tok == DIV_EQ \|\| tok == EDIV
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1928 \|\| tok == EDIV_EQ \|\| tok == ELEFTDIV \|\| tok == ELEFTDIV_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1929 \|\| tok == EMINUS \|\| tok == EMUL \|\| tok == EMUL_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1930 \|\| tok == EPOW \|\| tok == EPOW_EQ \|\| tok == EXPR_AND
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1931 \|\| tok == EXPR_AND_AND \|\| tok == EXPR_EQ \|\| tok == EXPR_GE
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1932 \|\| tok == EXPR_GT \|\| tok == EXPR_LE \|\| tok == EXPR_LT
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1933 \|\| tok == EXPR_NE \|\| tok == EXPR_NOT \|\| tok == EXPR_OR
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1934 \|\| tok == EXPR_OR_OR \|\| tok == LEFTDIV \|\| tok == LEFTDIV_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1935 \|\| tok == LSHIFT \|\| tok == LSHIFT_EQ \|\| tok == MUL_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1936 \|\| tok == OR_EQ \|\| tok == POW \|\| tok == POW_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1937 \|\| tok == RSHIFT \|\| tok == RSHIFT_EQ \|\| tok == SUB_EQ);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1938 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1939
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1940 bool
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1941 lexical_feedback::previous_token_is_keyword (void) const
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1942 {
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1943 const token *tok = tokens.front ();
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1944 return tok ? tok->is_keyword () : false;
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1945 }
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1946
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1947 bool
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1948 lexical_feedback::previous_token_may_be_command (void) const
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1949 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1950 const token *tok = tokens.front ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1951 return tok ? tok->may_be_command () : false;
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1952 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1953
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1954 void
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1955 lexical_feedback::maybe_mark_previous_token_as_variable (void)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1956 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1957 token *tok = tokens.front ();
16756 d56cbc17566e avoid looking at previous token that doesn't exist (bug #39180) John W. Eaton <jwe@octave.org> parents: 16681 diff changeset	1958
d56cbc17566e avoid looking at previous token that doesn't exist (bug #39180) John W. Eaton <jwe@octave.org> parents: 16681 diff changeset	1959 if (tok && tok->is_symbol ())
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1960 pending_local_variables.insert (tok->symbol_name ());
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1961 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1962
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1963 void
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1964 lexical_feedback::mark_as_variables (const std::list<std::string>& lst)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1965 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1966 for (std::list<std::string>::const_iterator p = lst.begin ();
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1967 p != lst.end (); p++)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1968 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1969 pending_local_variables.insert (*p);
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1970 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1971 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1972
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1973 static bool
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1974 looks_like_copyright (const std::string& s)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1975 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1976 bool retval = false;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1977
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1978 if (! s.empty ())
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1979 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1980 size_t offset = s.find_first_not_of (" \t");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1981
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1982 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	1983 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1984
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1985 return retval;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1986 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1987
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1988 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	1989 octave_base_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	1990 {
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1991 buffer = input;
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1992 chars_left = buffer.length ();
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1993 pos = buffer.c_str ();
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	1994 eof = eof_arg;
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1995 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1996
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1997 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	1998 octave_base_lexer::input_buffer::copy_chunk (char *buf, size_t max_size)
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	1999 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2000 static const char * const eol = "\n";
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2001
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2002 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	2003 assert (len > 0);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2004
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2005 memcpy (buf, pos, len);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2006
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2007 chars_left -= len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2008 pos += len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2009
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2010 // 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	2011 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	2012 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2013 if (len < max_size)
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2014 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2015 // 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	2016 // the buffer.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2017 buf[len++] = '\n';
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2018 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2019 else
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2020 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2021 // 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	2022 // in the buffer so arrange to have it returned on the next
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2023 // call to octave_base_lexer::read.
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2024 pos = eol;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2025 chars_left = 1;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2026 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2027 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2028
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2029 return len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2030 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2031
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2032 octave_base_lexer::~octave_base_lexer (void)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2033 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2034 yylex_destroy (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2035 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2036
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2037 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2038 octave_base_lexer::init (void)
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2039 {
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2040 yylex_init (&scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2041
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2042 // Make octave_base_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	2043 // flex-generated lexer.
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2044 yyset_extra (this, scanner);
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2045
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2046 clear_start_state ();
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2047 }
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2048
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2049 // Inside Flex-generated functions, yyg is the scanner cast to its real
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2050 // type. Some flex macros that we use in octave_base_lexer member functions
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2051 // (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	2052 // 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	2053 // OCTAVE_YYG macro.
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2054
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2055 #define OCTAVE_YYG \
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2056 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	2057
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2058 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2059 octave_base_lexer::reset (void)
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2060 {
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2061 // 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	2062 clear_start_state ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2063
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2064 symtab_context.clear ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2065
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2066 // 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	2067 promptflag (1);
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2068
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2069 // 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	2070 // input.
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2071
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2072 if (! quitting_gracefully
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2073 && (interactive \|\| forced_interactive)
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2074 && ! (reading_fcn_file
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2075 \|\| reading_classdef_file
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2076 \|\| reading_script_file
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2077 \|\| input_from_eval_string ()))
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2078 yyrestart (stdin, scanner);
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2079
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	2080 lexical_feedback::reset ();
17693 efbe746f8fa8 eliminate octave_comment_buffer singleton John W. Eaton <jwe@octave.org> parents: 17355 diff changeset	2081
efbe746f8fa8 eliminate octave_comment_buffer singleton John W. Eaton <jwe@octave.org> parents: 17355 diff changeset	2082 comment_buf.reset ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2083 }
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2084
16124 3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	2085 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2086 octave_base_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	2087 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2088 reading_script_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2089
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2090 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	2091 }
3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	2092
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2093 void
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2094 octave_base_lexer::begin_string (int state)
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2095 {
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2096 string_line = input_line_number;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2097 string_column = current_input_column;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2098
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2099 push_start_state (state);
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2100 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2101
16121 bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	2102 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2103 octave_base_lexer::handle_end_of_input (void)
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	2104 {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	2105 lexer_debug ("<<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	2106
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2107 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	2108 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2109 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	2110
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2111 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	2112 && ! 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	2113 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	2114 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	2115 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2116
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	2117 return handle_token (END_OF_INPUT);
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	2118 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2119
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2120 char *
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2121 octave_base_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	2122 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2123 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	2124 }
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2125
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2126 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2127 octave_base_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	2128 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2129 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	2130 }
421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2131
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2132 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2133 octave_base_lexer::text_yyinput (void)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2134 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2135 int c = yyinput (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2136
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2137 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2138 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2139 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2140 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2141 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2142 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2143
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2144 // 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	2145
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2146 if (c == '\r')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2147 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2148 c = yyinput (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2149
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2150 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2151 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2152 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2153 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2154 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2155 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2156
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2157 if (c != '\n')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2158 {
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2159 xunput (c);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2160 c = '\n';
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2161 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2162 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2163
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2164 return c;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2165 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2166
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2167 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2168 octave_base_lexer::xunput (char c, char *buf)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2169 {
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	2170 if (c != EOF)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2171 {
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	2172 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	2173 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2174 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	2175 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	2176 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	2177 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2178
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2179 yyunput (c, buf, scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2180 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2181 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2182
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2183 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2184 octave_base_lexer::xunput (char c)
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2185 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2186 char *yytxt = flex_yytext ();
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2187
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2188 xunput (c, yytxt);
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2189 }
96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2190
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2191 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2192 octave_base_lexer::looking_at_space (void)
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2193 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2194 int c = text_yyinput ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2195 xunput (c);
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2196 return (c == ' ' \|\| c == '\t');
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2197 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2198
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2199 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2200 octave_base_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	2201 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2202 bool retval = false;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2203
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2204 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	2205 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	2206 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2207 if (*i)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2208 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2209 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2210 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2211 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2212 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2213
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2214 return retval;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2215 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2216
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2217 bool
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2218 octave_base_lexer::is_variable (const std::string& name)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2219 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2220 return (symbol_table::is_variable (name)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2221 \|\| (pending_local_variables.find (name)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2222 != pending_local_variables.end ()));
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2223 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2224
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	2225 // 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	2226
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2227 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2228 octave_base_lexer::is_keyword_token (const std::string& s)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2229 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2230 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	2231 int c = current_input_column;
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2232
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	2233 int len = s.length ();
922 708827b941b4 [project @ 1994-11-14 22:14:13 by jwe] jwe parents: 916 diff changeset	2234
5088 7830f271a53f [project @ 2004-12-01 19:54:45 by jwe] jwe parents: 5035 diff changeset	2235 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	2236
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2237 if (kw)
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	2238 {
18319 f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2239 bool previous_at_bos = at_beginning_of_statement;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2240
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2241 // May be reset to true for some token types.
0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2242 at_beginning_of_statement = false;
0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2243
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2244 token *tok_val = 0;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2245
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2246 switch (kw->kw_id)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2247 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2248 case break_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2249 case catch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2250 case continue_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2251 case else_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2252 case otherwise_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2253 case return_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2254 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	2255 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2256 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2257
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2258 case static_kw:
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2259 if ((reading_fcn_file \|\| reading_script_file
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2260 \|\| reading_classdef_file)
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2261 && ! fcn_file_full_name.empty ())
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2262 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	2263 "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	2264 input_line_number,
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2265 fcn_file_full_name.c_str ());
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2266 else
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2267 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	2268 "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	2269 input_line_number);
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2270 // fall through ...
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2271
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2272 case persistent_kw:
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	2273 case global_kw:
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	2274 looking_at_decl_list = true;
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2275 break;
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2276
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2277 case case_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2278 case elseif_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2279 case until_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2280 break;
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 case end_kw:
14645 cbc00b587f36 also allow "end" indexing in classdef files John W. Eaton <jwe@octave.org> parents: 14642 diff changeset	2283 if (inside_any_object_index ()
cbc00b587f36 also allow "end" indexing in classdef files John W. Eaton <jwe@octave.org> parents: 14642 diff changeset	2284 \|\| (! reading_classdef_file
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2285 && (defining_func
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2286 && ! (looking_at_return_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2287 \|\| parsed_function_name.top ()))))
18319 f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2288 {
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2289 at_beginning_of_statement = previous_at_bos;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2290 return 0;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2291 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2292
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2293 tok_val = new token (end_kw, 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	2294 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2295 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2296
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2297 case end_try_catch_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2298 tok_val = new token (end_try_catch_kw, 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	2299 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2300 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2301
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2302 case end_unwind_protect_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2303 tok_val = new token (end_unwind_protect_kw,
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2304 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	2305 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2306 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2307
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2308 case endfor_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2309 tok_val = new token (endfor_kw, 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	2310 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2311 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2312
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2313 case endfunction_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2314 tok_val = new token (endfunction_kw, 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	2315 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2316 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2317
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2318 case endif_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2319 tok_val = new token (endif_kw, 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	2320 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2321 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2322
13246 0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	2323 case endparfor_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2324 tok_val = new token (endparfor_kw, 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	2325 at_beginning_of_statement = true;
13246 0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	2326 break;
0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	2327
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2328 case endswitch_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2329 tok_val = new token (endswitch_kw, 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	2330 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2331 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2332
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2333 case endwhile_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2334 tok_val = new token (endwhile_kw, 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	2335 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2336 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2337
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2338 case endclassdef_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2339 tok_val = new token (endclassdef_kw, 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	2340 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2341 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2342
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2343 case endenumeration_kw:
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2344 tok_val = new token (endenumeration_kw, 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	2345 at_beginning_of_statement = true;
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2346 break;
7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2347
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2348 case endevents_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2349 tok_val = new token (endevents_kw, 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	2350 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2351 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2352
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2353 case endmethods_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2354 tok_val = new token (endmethods_kw, 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	2355 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2356 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2357
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2358 case endproperties_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2359 tok_val = new token (endproperties_kw, 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	2360 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2361 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2362
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	2363
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2364 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	2365 case parfor_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2366 case while_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2367 decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2368 looping++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2369 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2370
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2371 case do_kw:
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2372 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	2373 decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2374 looping++;
10315 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
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2377 case try_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2378 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	2379 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	2380 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2381 break;
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 case if_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2384 case switch_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2385 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2386 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2387
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2388 case get_kw:
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2389 case set_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2390 // 'get' and 'set' are keywords in classdef method
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2391 // declarations.
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2392 if (! maybe_classdef_get_set_method)
18319 f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2393 {
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2394 at_beginning_of_statement = previous_at_bos;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2395 return 0;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2396 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2397 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2398
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2399 case enumeration_kw:
7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2400 case events_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2401 case methods_kw:
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2402 case properties_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2403 // 'properties', 'methods' and 'events' are keywords for
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2404 // classdef blocks.
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2405 if (! parsing_classdef)
18319 f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2406 {
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2407 at_beginning_of_statement = previous_at_bos;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2408 return 0;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2409 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2410 // fall through ...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2411
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2412 case classdef_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2413 // '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	2414 decrement_promptflag ();
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2415
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2416 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	2417 {
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2418 reading_classdef_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2419 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2420 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2421 break;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2422
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2423 case function_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2424 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2425
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2426 defining_func++;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2427 parsed_function_name.push (false);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2428
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2429 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	2430 {
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2431 reading_fcn_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2432 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2433 }
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2434
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2435 if (! (reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2436 \|\| reading_classdef_file))
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2437 input_line_number = 1;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2438 break;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2439
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2440 case magic_file_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2441 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2442 if ((reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2443 \|\| reading_classdef_file)
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2444 && ! fcn_file_full_name.empty ())
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2445 tok_val = new token (magic_file_kw, true,
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2446 fcn_file_full_name, l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2447 else
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2448 tok_val = new token (magic_file_kw, "stdin", l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2449 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2450 break;
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2451
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2452 case magic_line_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2453 tok_val = new token (magic_line_kw, static_cast<double> (l),
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2454 "", l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2455 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2456
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2457 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2458 panic_impossible ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2459 }
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2460
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2461 if (! tok_val)
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2462 tok_val = new token (kw->tok, true, l, c);
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2463
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2464 push_token (tok_val);
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2465
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2466 return kw->tok;
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	2467 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2468
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2469 return 0;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2470 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2471
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2472 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2473 octave_base_lexer::whitespace_is_significant (void)
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2474 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2475 return (nesting_level.is_bracket ()
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2476 \|\| (nesting_level.is_brace ()
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2477 && ! looking_at_object_index.front ()));
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2478 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2479
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2480 static inline bool
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2481 looks_like_hex (const char *s, int len)
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2482 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2483 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	2484 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2485
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2486 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2487 octave_base_lexer::handle_number (void)
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2488 {
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2489 double value = 0.0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2490 int nread = 0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2491
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2492 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2493
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2494 if (looks_like_hex (yytxt, strlen (yytxt)))
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2495 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2496 unsigned long ival;
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2497
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2498 nread = sscanf (yytxt, "%lx", &ival);
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2499
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2500 value = static_cast<double> (ival);
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2501 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2502 else
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2503 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2504 char *tmp = strsave (yytxt);
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2505
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2506 char *idx = strpbrk (tmp, "Dd");
2621 337a09dd1c06 [project @ 1997-01-24 21:49:41 by jwe] jwe parents: 2614 diff changeset	2507
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2508 if (idx)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2509 *idx = 'e';
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2510
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2511 nread = sscanf (tmp, "%lf", &value);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2512
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2513 delete [] tmp;
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2514 }
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2515
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2516 // 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	2517
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2518 assert (nread == 1);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2519
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2520 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	2521 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	2522
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2523 push_token (new token (NUM, value, yytxt, input_line_number,
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2524 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2525
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2526 current_input_column += flex_yyleng ();
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2527 }
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2528
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2529 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2530 octave_base_lexer::handle_continuation (void)
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2531 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2532 char *yytxt = flex_yytext ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2533 int yylng = flex_yyleng ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2534
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2535 int offset = 1;
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2536 if (yytxt[0] == '\\')
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2537 gripe_matlab_incompatible_continuation ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2538 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2539 offset = 3;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2540
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2541 bool have_space = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2542 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2543 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2544 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2545 if (c == ' ' \|\| c == '\t')
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2546 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2547 have_space = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2548 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2549 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2550 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2551 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2552 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2553
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2554 if (have_space)
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2555 mark_previous_token_trailing_space ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2556
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2557 bool have_comment = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2558 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2559 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2560 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2561 if (c == '#' \|\| c == '%')
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2562 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2563 have_comment = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2564 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2565 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2566 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2567 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2568 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2569
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2570 if (have_comment)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2571 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2572 comment_text = &yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2573
18245 1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2574 // finish_comment sets at_beginning_of_statement to true but
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2575 // that's not be correct if we are handling a continued
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2576 // statement. Preserve the current state.
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2577
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2578 bool saved_bos = at_beginning_of_statement;
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2579
16337 6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	2580 finish_comment (octave_comment_elt::end_of_line);
18245 1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2581
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2582 at_beginning_of_statement = saved_bos;
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2583 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2584
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2585 decrement_promptflag ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2586 input_line_number++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2587 current_input_column = 1;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2588 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2589
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2590 void
16337 6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	2591 octave_base_lexer::finish_comment (octave_comment_elt::comment_type typ)
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2592 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2593 bool copyright = looks_like_copyright (comment_text);
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2594
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2595 if (nesting_level.none () && help_text.empty ()
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2596 && ! comment_text.empty () && ! copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2597 help_text = comment_text;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2598
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2599 if (copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2600 typ = octave_comment_elt::copyright;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2601
17693 efbe746f8fa8 eliminate octave_comment_buffer singleton John W. Eaton <jwe@octave.org> parents: 17355 diff changeset	2602 comment_buf.append (comment_text, typ);
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2603
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2604 comment_text = "";
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2605
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2606 at_beginning_of_statement = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2607 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2608
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2609 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2610 octave_base_lexer::handle_close_bracket (int bracket_type)
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2611 {
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2612 int retval = bracket_type;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2613
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2614 if (! nesting_level.none ())
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2615 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2616 nesting_level.remove ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2617
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2618 if (bracket_type == ']')
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2619 bracketflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2620 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	2621 braceflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2622 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2623 panic_impossible ();
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2624 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2625
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2626 pop_start_state ();
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2627
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2628 return retval;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2629 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2630
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2631 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2632 octave_base_lexer::looks_like_command_arg (void)
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2633 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2634 bool space_before = space_follows_previous_token ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2635 bool space_after = looking_at_space ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2636
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2637 return (space_before && ! space_after
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2638 && previous_token_may_be_command ());
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2639 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2640
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2641 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2642 octave_base_lexer::handle_superclass_identifier (void)
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2643 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2644 std::string pkg;
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2645 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2646 std::string meth = strip_trailing_whitespace (yytxt);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2647 size_t pos = meth.find ("@");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2648 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	2649 meth = meth.substr (0, pos - 1);
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2650
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2651 pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2652 if (pos != std::string::npos)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2653 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2654 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2655 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2656 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2657
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2658 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	2659 \|\| is_keyword_token (pkg));
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2660 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2661 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2662 error ("method, class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2663 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2664 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2665
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2666 symbol_table::scope_id sid = symtab_context.curr_scope ();
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2667
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2668 push_token (new token
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2669 (SUPERCLASSREF,
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2670 meth.empty () ? 0 : &(symbol_table::insert (meth, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2671 cls.empty () ? 0 : &(symbol_table::insert (cls, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2672 pkg.empty () ? 0 : &(symbol_table::insert (pkg, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2673 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	2674
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2675 current_input_column += flex_yyleng ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2676
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2677 return SUPERCLASSREF;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2678 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2679
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2680 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2681 octave_base_lexer::handle_meta_identifier (void)
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2682 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2683 std::string pkg;
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2684 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2685 std::string cls = strip_trailing_whitespace (yytxt).substr (1);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2686 size_t pos = cls.find (".");
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2687
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2688 if (pos != std::string::npos)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2689 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2690 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2691 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2692 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2693
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2694 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	2695 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2696 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2697 error ("class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2698 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2699 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2700
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2701 symbol_table::scope_id sid = symtab_context.curr_scope ();
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2702
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2703 push_token (new token
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2704 (METAQUERY,
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2705 cls.empty () ? 0 : &(symbol_table::insert (cls, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2706 pkg.empty () ? 0 : &(symbol_table::insert (pkg, sid)),
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2707 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	2708
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2709 current_input_column += flex_yyleng ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2710
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2711 return METAQUERY;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2712 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2713
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2714 // 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	2715 // an identifier. Handles keywords. Return -1 if the identifier
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	2716 // should be ignored.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2717
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2718 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2719 octave_base_lexer::handle_identifier (void)
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2720 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2721 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2722
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2723 std::string tok = yytxt;
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2724
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2725 // If we are expecting a structure element, avoid recognizing
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2726 // 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	2727 // 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	2728 // decide whether to insert a comma.
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	2729
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2730 if (looking_at_indirect_ref)
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2731 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2732 push_token (new token (STRUCT_ELT, tok, input_line_number,
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2733 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2734
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2735 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	2736
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2737 current_input_column += flex_yyleng ();
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	2738
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2739 assert (! at_beginning_of_statement);
0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2740
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2741 return STRUCT_ELT;
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2742 }
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	2743
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2744 // If tok is a keyword token, then is_keyword_token will set
0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2745 // at_beginning_of_statement. For example, if tok is and IF
0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2746 // token, then at_beginning_of_statement will be false.
0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2747
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2748 int kw_token = is_keyword_token (tok);
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2749
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2750 if (looking_at_function_handle)
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2751 {
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2752 if (kw_token)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2753 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2754 error ("function handles may not refer to keywords");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2755
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2756 return LEXICAL_ERROR;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2757 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2758 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2759 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2760 push_token (new token (FCN_HANDLE, tok, input_line_number,
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2761 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2762
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2763 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	2764 looking_for_object_index = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2765
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2766 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2767
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2768 return FCN_HANDLE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2769 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2770 }
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2771
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	2772 // 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	2773 // Keywords can be followed by identifiers.
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2774
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2775 if (kw_token)
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2776 {
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	2777 if (kw_token >= 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2778 {
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2779 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	2780 looking_for_object_index = false;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2781 }
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	2782
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2783 // The call to is_keyword_token set at_beginning_of_statement.
0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2784
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	2785 return kw_token;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2786 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2787
17355 f0edd6c752e9 don't convert "end" token to "__end__" for indexing John W. Eaton <jwe@octave.org> parents: 17343 diff changeset	2788 // Find the token in the symbol table.
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2789
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2790 symbol_table::scope_id sid = symtab_context.curr_scope ();
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2791
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2792 token *tok_val = new token (NAME, &(symbol_table::insert (tok, sid)),
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2793 input_line_number, current_input_column);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2794
16788 f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2795 // The following symbols are handled specially so that things like
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2796 //
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2797 // pi +1
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2798 //
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2799 // are parsed as an addition expression instead of as a command-style
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2800 // function call with the argument "+1".
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2801
16269 488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2802 if (at_beginning_of_statement
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2803 && (! (is_variable (tok)
16788 f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2804 \|\| tok == "e" \|\| tok == "pi"
16269 488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2805 \|\| tok == "I" \|\| tok == "i"
488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2806 \|\| tok == "J" \|\| tok == "j"
488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2807 \|\| tok == "Inf" \|\| tok == "inf"
488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2808 \|\| tok == "NaN" \|\| tok == "nan")))
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2809 tok_val->mark_may_be_command ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2810
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2811 push_token (tok_val);
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2812
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2813 current_input_column += flex_yyleng ();
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2814
17355 f0edd6c752e9 don't convert "end" token to "__end__" for indexing John W. Eaton <jwe@octave.org> parents: 17343 diff changeset	2815 // The magic end index can't be indexed.
f0edd6c752e9 don't convert "end" token to "__end__" for indexing John W. Eaton <jwe@octave.org> parents: 17343 diff changeset	2816
f0edd6c752e9 don't convert "end" token to "__end__" for indexing John W. Eaton <jwe@octave.org> parents: 17343 diff changeset	2817 if (tok != "end")
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2818 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	2819
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2820 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2821
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2822 return NAME;
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2823 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2824
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2825 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2826 octave_base_lexer::maybe_warn_separator_insert (char sep)
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2827 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2828 std::string nm = fcn_file_full_name;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2829
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2830 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2831 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	2832 "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	2833 sep, input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2834 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2835 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	2836 "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	2837 sep, input_line_number, nm.c_str ());
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2838 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2839
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2840 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2841 octave_base_lexer::gripe_single_quote_string (void)
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2842 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2843 std::string nm = fcn_file_full_name;
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2844
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2845 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2846 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2847 "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	2848 input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2849 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2850 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2851 "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	2852 input_line_number, nm.c_str ());
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2853 }
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2854
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2855 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2856 octave_base_lexer::gripe_matlab_incompatible (const std::string& msg)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2857 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2858 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	2859
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2860 if (nm.empty ())
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2861 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2862 "potential Matlab compatibility problem: %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2863 msg.c_str ());
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2864 else
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2865 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2866 "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	2867 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	2868 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2869
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2870 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2871 octave_base_lexer::maybe_gripe_matlab_incompatible_comment (char c)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2872 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2873 if (c == '#')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2874 gripe_matlab_incompatible ("# used as comment character");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2875 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2876
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2877 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2878 octave_base_lexer::gripe_matlab_incompatible_continuation (void)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2879 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2880 gripe_matlab_incompatible ("\\ used as line continuation marker");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2881 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2882
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2883 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2884 octave_base_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	2885 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2886 std::string t = op;
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2887 int n = t.length ();
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2888 if (t[n-1] == '\n')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2889 t.resize (n-1);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2890 gripe_matlab_incompatible (t + " used as operator");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2891 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2892
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2893 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2894 octave_base_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	2895 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2896 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2897 lval->tok_val = tok;
16230 4bf907906134 use a queue to hold tokens in the lexer John W. Eaton <jwe@octave.org> parents: 16229 diff changeset	2898 tokens.push (tok);
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2899 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2900
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2901 token *
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2902 octave_base_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	2903 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2904 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2905 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	2906 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2907
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2908 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2909 octave_base_lexer::display_token (int tok)
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2910 {
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2911 switch (tok)
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2912 {
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2913 case '=': std::cerr << "'='\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2914 case ':': std::cerr << "':'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2915 case '-': std::cerr << "'-'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2916 case '+': std::cerr << "'+'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2917 case '': std::cerr << "''\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2918 case '/': std::cerr << "'/'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2919 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	2920 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	2921 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	2922 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	2923 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	2924 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	2925 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	2926 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	2927 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	2928 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	2929 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	2930 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	2931 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	2932 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	2933 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	2934 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	2935 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	2936 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	2937 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	2938 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	2939 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	2940 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	2941 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	2942 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	2943 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	2944 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	2945 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	2946 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	2947 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	2948 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	2949 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	2950 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	2951 case EMINUS: std::cerr << "EMINUS\n"; break;
16284 09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE. John W. Eaton <jwe@octave.org> parents: 16283 diff changeset	2952 case HERMITIAN: std::cerr << "HERMITIAN\n"; break;
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2953 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	2954 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	2955 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	2956 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	2957 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	2958
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2959 case NUM:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2960 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	2961 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2962 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	2963 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	2964 << " [" << 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	2965 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2966 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2967
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2968 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	2969 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2970 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	2971 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	2972 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2973 break;
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2974
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2975 case NAME:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2976 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2977 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	2978 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	2979 std::cerr << "NAME";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2980 if (sr)
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2981 std::cerr << " [" << sr->name () << "]";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2982 std::cerr << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2983 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2984 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2985
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2986 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	2987
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2988 case DQ_STRING:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2989 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	2990 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2991 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	2992
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2993 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	2994 << " [" << 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	2995 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2996 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2997
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2998 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	2999 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	3000 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	3001 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	3002 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	3003 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	3004 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	3005 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	3006 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	3007 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	3008 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	3009 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	3010 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	3011 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	3012 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	3013 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	3014 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	3015 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	3016 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	3017 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	3018 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	3019 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	3020 case FCN: std::cerr << "FCN\n"; break;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	3021 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	3022 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	3023 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	3024 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	3025 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	3026 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	3027 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	3028 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	3029 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	3030 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	3031 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	3032 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	3033 default:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3034 {
16166 cb80b1d062b1 don't attempt to print unprintable tokens John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	3035 if (tok < 256 && tok > 31)
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3036 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	3037 else
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3038 std::cerr << "UNKNOWN(" << tok << ")\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3039 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3040 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3041 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3042 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3043
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3044 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3045 octave_base_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	3046 {
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3047 error (msg);
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3048
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3049 OCTAVE_QUIT;
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3050
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3051 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	3052 }
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3053
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3054 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3055 octave_base_lexer::lexer_debug (const char *pattern)
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3056 {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3057 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3058 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3059 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3060
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3061 display_start_state ();
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3062
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3063 std::cerr << "P: " << pattern << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3064 std::cerr << "T: " << flex_yytext () << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3065 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3066 }
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3067
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3068 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3069 octave_base_lexer::push_start_state (int state)
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3070 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3071 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3072
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3073 start_state_stack.push (state);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3074
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3075 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3076 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3077
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3078 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3079 octave_base_lexer::pop_start_state (void)
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3080 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3081 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3082
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3083 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3084
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3085 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3086 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3087
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3088 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3089 octave_base_lexer::clear_start_state (void)
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3090 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3091 while (! start_state_stack.empty ())
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3092 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3093
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3094 push_start_state (INITIAL);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3095 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3096
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3097 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3098 octave_base_lexer::display_start_state (void) const
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3099 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3100 std::cerr << "S: ";
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3101
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3102 switch (start_state ())
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3103 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3104 case INITIAL:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3105 std::cerr << "INITIAL" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3106 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3107
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3108 case COMMAND_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3109 std::cerr << "COMMAND_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3110 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3111
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3112 case MATRIX_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3113 std::cerr << "MATRIX_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3114 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3115
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3116 case INPUT_FILE_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3117 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	3118 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3119
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3120 case BLOCK_COMMENT_START:
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3121 std::cerr << "BLOCK_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3122 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3123
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3124 case LINE_COMMENT_START:
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3125 std::cerr << "LINE_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3126 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3127
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3128 case DQ_STRING_START:
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3129 std::cerr << "DQ_STRING_START" << std::endl;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3130 break;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3131
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3132 case SQ_STRING_START:
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3133 std::cerr << "SQ_STRING_START" << std::endl;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3134 break;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3135
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3136 default:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3137 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	3138 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3139 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3140 }
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3141
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3142 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3143 octave_base_lexer::handle_op (const char *pattern, int tok, bool bos)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3144 {
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3145 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3146
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	3147 return handle_op_internal (tok, bos, true);
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3148 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3149
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3150 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3151 octave_base_lexer::handle_incompatible_op (const char *pattern, int tok,
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3152 bool bos)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3153 {
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3154 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3155
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	3156 return handle_op_internal (tok, bos, false);
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3157 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3158
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3159 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3160 octave_base_lexer::maybe_unput_comma_before_unary_op (int tok)
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3161 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3162 int prev_tok = previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3163
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3164 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3165
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3166 if (whitespace_is_significant () && space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3167 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3168 int c = text_yyinput ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3169 xunput (c);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3170
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3171 bool space_after = (c == ' ' \|\| c == '\t');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3172
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	3173 if (! (prev_tok == '[' \|\| prev_tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3174 \|\| previous_token_is_binop ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3175 \|\| ((tok == '+' \|\| tok == '-') && space_after)))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3176 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3177 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3178
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3179 return unput_comma;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3180 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3181
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3182 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3183 octave_base_lexer::handle_unary_op (int tok, bool bos)
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3184 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3185 return maybe_unput_comma_before_unary_op (tok)
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	3186 ? -1 : handle_op_internal (tok, bos, true);
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3187 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3188
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3189 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3190 octave_base_lexer::handle_incompatible_unary_op (int tok, bool bos)
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3191 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3192 return maybe_unput_comma_before_unary_op (tok)
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	3193 ? -1 : handle_op_internal (tok, bos, false);
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3194 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3195
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3196 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3197 octave_base_lexer::handle_op_internal (int tok, bool bos, bool compat)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3198 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3199 if (! compat)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3200 gripe_matlab_incompatible_operator (flex_yytext ());
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3201
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	3202 push_token (new token (tok, input_line_number, current_input_column));
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3203
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3204 current_input_column += flex_yyleng ();
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3205 looking_for_object_index = false;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3206 at_beginning_of_statement = bos;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3207
16643 4258750c76ed don't push operator tokens twice John W. Eaton <jwe@octave.org> parents: 16365 diff changeset	3208 return count_token_internal (tok);
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3209 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3210
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3211 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3212 octave_base_lexer::handle_token (const std::string& name, int tok)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3213 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	3214 token *tok_val = new token (tok, name, input_line_number,
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	3215 current_input_column);
16231 2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3216
2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3217 return handle_token (tok, tok_val);
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3218 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3219
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3220 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3221 octave_base_lexer::handle_token (int tok, token *tok_val)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3222 {
16231 2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3223 if (! tok_val)
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	3224 tok_val = new token (tok, input_line_number, current_input_column);
16231 2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3225
2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3226 push_token (tok_val);
2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3227
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3228 current_input_column += flex_yyleng ();
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3229
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3230 return count_token_internal (tok);
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3231 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3232
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3233 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3234 octave_base_lexer::count_token (int tok)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3235 {
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3236 token *tok_val = new token (tok, input_line_number, current_input_column);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3237
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3238 push_token (tok_val);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3239
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3240 return count_token_internal (tok);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3241 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3242
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3243 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3244 octave_base_lexer::count_token_internal (int tok)
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3245 {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3246 if (tok != '\n')
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3247 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3248 Vtoken_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3249 token_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3250 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3251
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3252 return show_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3253 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3254
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3255 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3256 octave_base_lexer::show_token (int tok)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3257 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3258 if (Vdisplay_tokens)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3259 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3260
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3261 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3262 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3263 std::cerr << "R: ";
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3264 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3265 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3266 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3267
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3268 return tok;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3269 }
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3270
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3271 int
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3272 octave_lexer::fill_flex_buffer (char *buf, unsigned max_size)
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3273 {
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3274 int status = 0;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3275
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3276 if (input_buf.empty ())
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3277 {
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3278 bool eof = false;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3279 current_input_line = input_reader.get_input (eof);
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3280 input_buf.fill (current_input_line, eof);
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3281 }
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3282
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3283 if (! input_buf.empty ())
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3284 status = input_buf.copy_chunk (buf, max_size);
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3285 else
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3286 {
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3287 status = YY_NULL;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3288
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3289 if (! input_buf.at_eof ())
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3290 fatal_error ("octave_base_lexer::fill_flex_buffer failed");
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3291 }
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3292
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3293 return status;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3294 }
16294 0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3295
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3296 int
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3297 octave_push_lexer::fill_flex_buffer (char *buf, unsigned max_size)
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3298 {
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3299 int status = 0;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3300
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3301 if (input_buf.empty () && ! input_buf.at_eof ())
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3302 input_buf.fill (std::string (1, static_cast<char> (1)), false);
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3303
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3304 if (! input_buf.empty ())
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3305 status = input_buf.copy_chunk (buf, max_size);
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3306 else
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3307 {
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3308 status = YY_NULL;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3309
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3310 if (! input_buf.at_eof ())
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3311 fatal_error ("octave_base_lexer::fill_flex_buffer failed");
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3312 }
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3313
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3314 return status;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3315 }

Mercurial > octave-nkf

annotate libinterp/parse-tree/lex.ll @ 18808:4293f49795d9 stable