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

annotate libinterp/parse-tree/lex.ll @ 18437:888cd8f62c67 gui-release

maint: Periodic merge of stable to gui-release.

author	Rik <rik@octave.org>
date	Sat, 08 Feb 2014 13:33:05 -0800
parents	1ecfcfa4858e 4d2e15abe5e7
children	e76d50d65278 ebb878596bcf

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
18233 af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	46 %x COMMAND_START
4208 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
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	235 // When a command argument boundary is detected, push out the
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	236 // current argument being built. This one seems like a good
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	237 // candidate for a function call.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	238
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	239 #define COMMAND_ARG_FINISH \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	240 do \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	241 { \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	242 if (curr_lexer->string_text.empty ()) \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	243 break; \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	244 \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	245 int retval = curr_lexer->handle_token (curr_lexer->string_text, \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	246 SQ_STRING); \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	247 \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	248 curr_lexer->string_text = ""; \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	249 curr_lexer->command_arg_paren_count = 0; \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	250 \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	251 yyless (0); \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	252 \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	253 return retval; \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	254 } \
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	255 while (0)
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	256
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	257 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	258
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	259 static unsigned int Vtoken_count = 0;
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	260
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	261 // Internal variable for lexer debugging state.
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	262 static bool lexer_debug_flag = false;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	263
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	264 // 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	265 // file that are needed inside the lexer actions.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	266
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	267 static std::string strip_trailing_whitespace (char *s);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	268
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	269 %}
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	270
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	271 D [0-9]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	272 S [ \t]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	273 NL ((\n)\|(\r)\|(\r\n))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	274 Im [iIjJ]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	275 CCHAR [#%]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	276 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	277 EXPON ([DdEe][+-]?{D}+)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	278 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	279
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	280 ANY_EXCEPT_NL [^\r\n]
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	281 ANY_INCLUDING_NL (.\|{NL})
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	282
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	283 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	284
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	285 %{
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	286 // 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	287 // the parser go down a special path.
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	288 %}
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	289
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	290 <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	291 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	292
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	293 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	294
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	295 // 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	296 // as the first token.
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	297 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	298
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	299 curr_lexer->pop_start_state ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	300
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	301 return curr_lexer->show_token (INPUT_FILE);
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	302 }
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	303
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	304 %{
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	305 // Help and other command-style functions.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	306 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	307
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	308 %{
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	309 // Commands can be continued on a second line using the ellipsis.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	310 // If an argument is in construction, it is completed.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	311 %}
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	312
18312 7ac2a8b758fc maint: Periodic merge of stable to gui-release. John W. Eaton <jwe@octave.org> parents: 18246 18311 diff changeset	313 <COMMAND_START>(\.\.\.){ANY_EXCEPT_NL}*{NL} {
7ac2a8b758fc maint: Periodic merge of stable to gui-release. John W. Eaton <jwe@octave.org> parents: 18246 18311 diff changeset	314 curr_lexer->lexer_debug ("<COMMAND_START>(\\.\\.\\.){ANY_EXCEPT_NL}*{NL}");
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	315
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	316 COMMAND_ARG_FINISH;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	317
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	318 curr_lexer->input_line_number++;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	319 curr_lexer->current_input_column = 1;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	320
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	321 HANDLE_STRING_CONTINUATION;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	322 }
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	323
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	324 %{
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	325 // Commands normally end at the end of a line or a semicolon.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	326 %}
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	327
18312 7ac2a8b758fc maint: Periodic merge of stable to gui-release. John W. Eaton <jwe@octave.org> parents: 18246 18311 diff changeset	328 <COMMAND_START>({CCHAR}{ANY_EXCEPT_NL}*)?{NL} {
7ac2a8b758fc maint: Periodic merge of stable to gui-release. John W. Eaton <jwe@octave.org> parents: 18246 18311 diff changeset	329 curr_lexer->lexer_debug ("<COMMAND_START>({CCHAR}{ANY_EXCEPT_NL}*)?{NL}");
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	330
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	331 COMMAND_ARG_FINISH;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	332
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	333 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	334 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	335 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	336 curr_lexer->at_beginning_of_statement = true;
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	337 curr_lexer->pop_start_state ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	338
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	339 return curr_lexer->handle_token ('\n');
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	340 }
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	341
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	342 <COMMAND_START>[\,\;] {
18233 af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	343 curr_lexer->lexer_debug ("<COMMAND_START>[\\,\\;]");
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	344
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	345 if (yytext[0] != ',' \|\| curr_lexer->command_arg_paren_count == 0)
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	346 {
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	347 COMMAND_ARG_FINISH;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	348 curr_lexer->looking_for_object_index = false;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	349 curr_lexer->at_beginning_of_statement = true;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	350 curr_lexer->pop_start_state ();
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	351 return curr_lexer->handle_token (yytext[0]);
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	352 }
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	353 else
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	354 curr_lexer->string_text += yytext;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	355
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	356 curr_lexer->current_input_column += yyleng;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	357 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	358
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	359 %{
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	360 // Unbalanced parentheses serve as pseudo-quotes: they are included in
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	361 // the final argument string, but they cause parentheses and quotes to
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	362 // be slurped into that argument as well.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	363 %}
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	364
18233 af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	365 <COMMAND_START>[\(\[\{]* {
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	366 curr_lexer->lexer_debug ("<COMMAND_START>[\\(\\[\\{]+");
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	367
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	368 curr_lexer->command_arg_paren_count += yyleng;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	369 curr_lexer->string_text += yytext;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	370 curr_lexer->current_input_column += yyleng;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	371 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	372
18233 af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	373 <COMMAND_START>[\)\]\}]* {
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	374 curr_lexer->lexer_debug ("<COMMAND_START>[\\)\\]\\}]+");
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	375
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	376 curr_lexer->command_arg_paren_count -= yyleng;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	377 curr_lexer->string_text += yytext;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	378 curr_lexer->current_input_column += yyleng;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	379 }
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	380
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	381 %{
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	382 // Handle quoted strings. Quoted strings that are not separated by
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	383 // whitespace from other argument text are combined with that previous
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	384 // text. For instance,
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	385 //
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	386 // command 'text1'"text2"
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	387 //
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	388 // has a single argument text1text2, not two separate arguments.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	389 // That's why we must test to see if we are in command argument mode
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	390 // when processing the end of a string.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	391 %}
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	392
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	393 <COMMAND_START>[\"\'] {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	394 curr_lexer->lexer_debug ("<COMMAND_START>[\\\"\\']");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	395
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	396 if (curr_lexer->command_arg_paren_count == 0)
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	397 curr_lexer->begin_string (yytext[0] == '"'
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	398 ? DQ_STRING_START : SQ_STRING_START);
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	399 else
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	400 curr_lexer->string_text += yytext;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	401
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	402 curr_lexer->current_input_column += yyleng;
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	403 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	404
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	405 %{
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	406 // In standard command argument processing, whitespace separates
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	407 // arguments. In the presence of unbalanced parentheses, it is
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	408 // incorporated into the argument.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	409 %}
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	410
18233 af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	411 <COMMAND_START>{S}* {
af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	412 curr_lexer->lexer_debug ("<COMMAND_START>{S}*");
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	413
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	414 if (curr_lexer->command_arg_paren_count == 0)
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	415 COMMAND_ARG_FINISH;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	416 else
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	417 curr_lexer->string_text += yytext;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	418
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	419 curr_lexer->current_input_column += yyleng;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	420 }
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	421
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	422 %{
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	423 // Everything else is slurped into the command arguments.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	424 %}
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	425
18233 af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	426 <COMMAND_START>([\.]\|[^#% \t\r\n\.\,\;\"\'$\[\{\}\]$]*) {
af8a70d6885c improve command parsing Michael C. Grant <mcg@cvxr.com> parents: 18230 diff changeset	427 curr_lexer->lexer_debug ("<COMMAND_START>([\.]\|[^#% \\t\\r\n\\.\\,\\;\\\"\\'\$\\[\\{\\}\\]\$]*");
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	428
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	429 curr_lexer->string_text += yytext;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	430 curr_lexer->current_input_column += yyleng;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	431 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	432
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	433 <MATRIX_START>{S}* {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	434 curr_lexer->lexer_debug ("<MATRIX_START>{S}*");
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	435
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	436 curr_lexer->mark_previous_token_trailing_space ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	437 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	438
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	439 <MATRIX_START>{NL} {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	440 curr_lexer->lexer_debug ("<MATRIX_START>{NL}");
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	441
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	442 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	443 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	444
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	445 if (curr_lexer->nesting_level.is_paren ())
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	446 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	447 else
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	448 {
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	449 int tok = curr_lexer->previous_token_value ();
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	450
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	451 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	452 {
1bbc2fc552cf adjust line and column info when inserting new text in lexer input stream John W. Eaton <jwe@octave.org> parents: 16277 diff changeset	453 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	454 // 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	455 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	456 }
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	457 }
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	458 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	459
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	460 %{
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	461 // 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	462 // need to know if the next token is '=' or '=='.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	463 //
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	464 // 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	465 // 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	466 // operator.
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	467 //
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	468 // 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	469 // after seeing a ']' character...
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	470
17861 870f3e12e163 maint: Use phrase "FIXME:" for problem areas in code. Rik <rik@octave.org> parents: 17744 diff changeset	471 // FIXME: we need to handle block comments here.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	472 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	473
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	474 <MATRIX_START>\] {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	475 curr_lexer->lexer_debug ("<MATRIX_START>\\]");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	476
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	477 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	478
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	479 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	480 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	481
16299 c40a8873c2e7 eliminate some unused variables John W. Eaton <jwe@octave.org> parents: 16294 diff changeset	482 curr_lexer->handle_close_bracket (']');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	483
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	484 return curr_lexer->count_token (']');
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	485 }
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	486
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	487 %{
17861 870f3e12e163 maint: Use phrase "FIXME:" for problem areas in code. Rik <rik@octave.org> parents: 17744 diff changeset	488 // 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	489 %}
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	490
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	491 <MATRIX_START>\} {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	492 curr_lexer->lexer_debug ("<MATRIX_START>\\}*");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	493
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	494 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	495
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	496 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	497 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	498
16299 c40a8873c2e7 eliminate some unused variables John W. Eaton <jwe@octave.org> parents: 16294 diff changeset	499 curr_lexer->handle_close_bracket ('}');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	500
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	501 return curr_lexer->count_token ('}');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	502 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	503
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	504 \[ {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	505 curr_lexer->lexer_debug ("\\[");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	506
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	507 bool unput_comma = false;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	508
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	509 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	510 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	511 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	512 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	513
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	514 if (! (tok == '[' \|\| tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	515 \|\| curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	516 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	517 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	518
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	519 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	520 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	521 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	522 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	523 // 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	524 curr_lexer->current_input_column--;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	525 }
5615 d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	526 else
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	527 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	528 curr_lexer->nesting_level.bracket ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	529
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	530 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	531
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	532 curr_lexer->current_input_column += yyleng;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	533 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	534 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	535
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	536 if (curr_lexer->defining_func
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	537 && ! curr_lexer->parsed_function_name.top ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	538 curr_lexer->looking_at_return_list = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	539 else
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	540 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	541
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	542 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	543
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	544 curr_lexer->bracketflag++;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	545
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	546 curr_lexer->push_start_state (MATRIX_START);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	547
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	548 return curr_lexer->count_token ('[');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	549 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	550 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	551
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	552 \] {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	553 curr_lexer->lexer_debug ("\\]");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	554
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	555 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	556
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	557 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	558
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	559 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	560 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	561
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	562 return curr_lexer->handle_token (']');
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	563 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	564
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	565 %{
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	566 // Gobble comments.
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
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	569 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	570 // 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	571 // 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	572 // block.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	573 %}
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 ^{S}{CCHAR}\{{S}{NL} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	576 curr_lexer->lexer_debug ("^{S}{CCHAR}\\{{S}{NL}");
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	577
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	578 yyless (0);
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	579
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	580 if (curr_lexer->start_state () == LINE_COMMENT_START)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	581 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	582 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	583 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	584
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	585 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	586 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	587
16365 8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	588 curr_lexer->decrement_promptflag ();
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	589
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	590 curr_lexer->push_start_state (BLOCK_COMMENT_START);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	591
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	592 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	593
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	594 <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	595 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	596
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	597 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	598 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	599
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	600 if (curr_lexer->block_comment_nesting_level)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	601 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	602
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	603 curr_lexer->block_comment_nesting_level++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	604 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	605
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	606 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	607 // 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	608 // 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	609 // before storing the comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	610 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	611
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	612 <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	613 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	614
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	615 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	616 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	617
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	618 if (curr_lexer->block_comment_nesting_level > 1)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	619 curr_lexer->comment_text = "\n";
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	620 else
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	621 curr_lexer->finish_comment (octave_comment_elt::block);
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	622
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	623 curr_lexer->block_comment_nesting_level--;
16364 1e064963c90a properly recognize nested block comments John W. Eaton <jwe@octave.org> parents: 16363 diff changeset	624
1e064963c90a properly recognize nested block comments John W. Eaton <jwe@octave.org> parents: 16363 diff changeset	625 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	626 {
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	627 curr_lexer->increment_promptflag ();
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	628
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	629 curr_lexer->pop_start_state ();
8097a052ec57 use secondary prompt when reading block comments John W. Eaton <jwe@octave.org> parents: 16364 diff changeset	630 }
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	631 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	632
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	633 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	634 // Body of a block comment.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	635 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	636
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	637 <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	638 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	639
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	640 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	641 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	642 curr_lexer->comment_text += yytext;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	643 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	644
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	645 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	646 // Full-line or end-of-line comment.
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
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	649 {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	650 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	651
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	652 curr_lexer->push_start_state (LINE_COMMENT_START);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	653 yyless (0);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	654 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	655
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	656 <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	657 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	658
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	659 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	660 curr_lexer->input_line_number++;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	661 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	662
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	663 bool have_space = false;
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	664 size_t len = yyleng;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	665 size_t i = 0;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	666 while (i < len)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	667 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	668 char c = yytext[i];
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	669 if (c == ' ' \|\| c == '\t')
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	670 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	671 have_space = true;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	672 i++;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	673 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	674 else
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	675 break;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	676 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	677
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	678 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	679
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	680 while (i < len)
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	681 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	682 char c = yytext[i];
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	683 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	684 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	685 num_comment_chars++;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	686 i++;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	687 }
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	688 else
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	689 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	690 }
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	691
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	692 curr_lexer->comment_text += &yytext[i];
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	693
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	694 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	695 {
17882 cf3f828f401c only allow [%#]{ as block comment start (bug #40513) John W. Eaton <jwe@octave.org> parents: 17861 diff changeset	696 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	697 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	698 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	699
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	700 while (i < len)
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	701 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	702 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	703 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	704 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	705 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	706 break;
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	707 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	708 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	709
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	710 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	711 {
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	712 yyless (0);
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	713
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	714 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	715
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	716 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	717 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	718 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	719 }
d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	720 else
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	721 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	722 if (have_space)
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	723 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	724
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	725 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	726
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	727 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	728
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	729 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	730 curr_lexer->input_line_number--;
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	731 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	732 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	733
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	734 %{
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	735 // End of a block of full-line comments.
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	736 %}
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	737
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	738 <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	739 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	740
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	741 curr_lexer->xunput (yytext[0]);
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	742
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	743 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	744
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	745 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	746 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	747
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	748 %{
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	749 // 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	750 %}
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	751
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	752 <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	753 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	754
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	755 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	756
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	757 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	758 }
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	759
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	760 %{
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	761 // Double-quoted character strings.
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	762 %}
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	763
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	764 <DQ_STRING_START>\"\" {
16903 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>\\\"\\\"");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	766
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	767 curr_lexer->current_input_column += yyleng;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	768 curr_lexer->string_text += '"';
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	769 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	770
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	771 <DQ_STRING_START>\" {
16903 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>\\\"");
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 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++;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	775
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	776 curr_lexer->pop_start_state ();
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	777
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	778 if (curr_lexer->start_state() != COMMAND_START)
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	779 {
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	780 curr_lexer->looking_for_object_index = true;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	781 curr_lexer->at_beginning_of_statement = false;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	782
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	783 curr_lexer->push_token (new token (DQ_STRING,
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	784 curr_lexer->string_text,
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	785 curr_lexer->string_line,
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	786 curr_lexer->string_column));
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	787
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	788 curr_lexer->string_text = "";
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	789
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	790 return curr_lexer->count_token_internal (DQ_STRING);
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	791 }
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	792 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	793
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	794 <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	795 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	796
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	797 curr_lexer->current_input_column += yyleng;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	798
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	799 int result;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	800 sscanf (yytext+1, "%o", &result);
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	801
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	802 if (result > 0xff)
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	803 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	804 else
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	805 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	806 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	807
17244 9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	808 <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	809 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	810
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	811 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	812
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	813 int result;
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	814 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	815
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	816 // 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	817 // 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	818 // 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	819 // 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	820 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	821 }
9de751a10910 Add support for hexadecimal escape sequences in double-quoted strings (bug #39775) Mike Miller <mtmiller@ieee.org> parents: 16914 diff changeset	822
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	823 <DQ_STRING_START>"\\a" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	824 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	825
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	826 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	827 curr_lexer->string_text += '\a';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	828 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	829
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	830 <DQ_STRING_START>"\\b" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	831 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	832
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	833 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	834 curr_lexer->string_text += '\b';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	835 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	836
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	837 <DQ_STRING_START>"\\f" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	838 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	839
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	840 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	841 curr_lexer->string_text += '\f';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	842 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	843
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	844 <DQ_STRING_START>"\\n" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	845 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	846
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	847 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	848 curr_lexer->string_text += '\n';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	849 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	850
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	851 <DQ_STRING_START>"\\r" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	852 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	853
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	854 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	855 curr_lexer->string_text += '\r';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	856 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	857
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	858 <DQ_STRING_START>"\\t" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	859 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	860
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	861 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	862 curr_lexer->string_text += '\t';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	863 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	864
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	865 <DQ_STRING_START>"\\v" {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	866 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	867
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	868 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	869 curr_lexer->string_text += '\v';
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	870 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	871
18428 4d2e15abe5e7 Disallow comments after continuation in double-quoted strings (bug #41415). Stefan Mahr <dac922@gmx.de> parents: 18319 diff changeset	872 <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	873 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	874
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	875 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	876
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	877 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	878
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	879 if (nm.empty ())
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	880 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	881 else
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	882 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	883 "%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	884 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	885
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	886 HANDLE_STRING_CONTINUATION;
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	887 }
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	888
18428 4d2e15abe5e7 Disallow comments after continuation in double-quoted strings (bug #41415). Stefan Mahr <dac922@gmx.de> parents: 18319 diff changeset	889 <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	890 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	891
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	892 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	893
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	894 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	895
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	896 if (nm.empty ())
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	897 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	898 else
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	899 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	900 "%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	901 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	902
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	903 HANDLE_STRING_CONTINUATION;
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	904 }
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	905
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	906 <DQ_STRING_START>\\{NL} {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	907 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	908
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	909 HANDLE_STRING_CONTINUATION;
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	910 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	911
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	912 <DQ_STRING_START>\\. {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	913 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	914
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	915 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	916 curr_lexer->string_text += yytext[1];
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	917 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	918
16914 bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	919 <DQ_STRING_START>\. {
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	920 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	921
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	922 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	923 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	924 }
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	925
bc12849bb6cc deprecate ... and whitespace/comments after continuation markers in strings John W. Eaton <jwe@octave.org> parents: 16904 diff changeset	926 <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	927 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	928
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	929 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	930 curr_lexer->string_text += yytext;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	931 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	932
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	933 <DQ_STRING_START>{NL} {
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	934 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	935
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	936 curr_lexer->input_line_number++;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	937 curr_lexer->current_input_column = 1;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	938
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	939 error ("unterminated character string constant");
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	940
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	941 return LEXICAL_ERROR;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	942 }
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	943
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	944 %{
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	945 // Single-quoted character strings.
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	946 %}
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	947
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	948 <SQ_STRING_START>\'\' {
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	949 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	950
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	951 curr_lexer->current_input_column += yyleng;
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	952 curr_lexer->string_text += '\'';
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	953 }
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	954
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	955 <SQ_STRING_START>\' {
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	956 curr_lexer->lexer_debug ("<SQ_STRING_START>\\'");
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	957
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	958 curr_lexer->current_input_column++;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	959
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	960 curr_lexer->pop_start_state ();
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	961
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	962 if (curr_lexer->start_state() != COMMAND_START)
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	963 {
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	964 curr_lexer->looking_for_object_index = true;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	965 curr_lexer->at_beginning_of_statement = false;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	966
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	967 curr_lexer->push_token (new token (SQ_STRING,
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	968 curr_lexer->string_text,
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	969 curr_lexer->string_line,
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	970 curr_lexer->string_column));
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	971
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	972 curr_lexer->string_text = "";
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	973
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	974 return curr_lexer->count_token_internal (SQ_STRING);
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	975 }
16904 f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	976 }
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	977
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	978 <SQ_STRING_START>[^\'\n\r]+ {
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	979 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	980
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	981 curr_lexer->current_input_column += yyleng;
f29dd5a7591d more tweaks for parsing character strings John W. Eaton <jwe@octave.org> parents: 16903 diff changeset	982 curr_lexer->string_text += yytext;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	983 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	984
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	985 <SQ_STRING_START>{NL} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	986 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	987
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	988 curr_lexer->input_line_number++;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	989 curr_lexer->current_input_column = 1;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	990
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	991 error ("unterminated character string constant");
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	992
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	993 return LEXICAL_ERROR;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	994 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	995
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	996 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	997 // Imaginary numbers.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	998 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	999
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1000 {NUMBER}{Im} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1001 curr_lexer->lexer_debug ("{NUMBER}{Im}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1002
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1003 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	1004 && curr_lexer->space_follows_previous_token ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1005 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1006 yyless (0);
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1007 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	1008 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1009 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1010 {
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1011 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	1012
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1013 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	1014 && 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	1015 && ! (tok == '[' \|\| tok == '{'
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1016 \|\| 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	1017 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1018 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1019 unput (',');
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1020 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1021 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1022 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1023 curr_lexer->handle_number ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1024 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	1025 }
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1026 }
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
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1029 %{
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	1030 // 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	1031 // the constant.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1032 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1033
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1034 {D}+/\.[\*/\\^\'] \|
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1035 {NUMBER} {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	1036 curr_lexer->lexer_debug ("{D}+/\\.[\\*/\\\\^\\']\|{NUMBER}");
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1037
16361 e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1038 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	1039 && 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	1040 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1041 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1042 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	1043 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1044 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1045 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1046 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	1047
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1048 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	1049 && 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	1050 && ! (tok == '[' \|\| tok == '{'
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1051 \|\| 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	1052 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1053 yyless (0);
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1054 unput (',');
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1055 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1056 else
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1057 {
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1058 curr_lexer->handle_number ();
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1059 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	1060 }
e1dcd834751f and foo NUMBER as command syntax (bug #38565) John W. Eaton <jwe@octave.org> parents: 16360 diff changeset	1061 }
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1062 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1063
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1064 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1065 // 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	1066 // the <MATRIX_START> start state code above.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1067 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1068
16363 d16c255299c0 recognize block comment begin while processing line comments (bug #38559) John W. Eaton <jwe@octave.org> parents: 16361 diff changeset	1069 {S}+ {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1070 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	1071
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1072 curr_lexer->mark_previous_token_trailing_space ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1073 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1074
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1075 %{
17247 e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1076 // 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	1077 %}
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1078
18311 b14cdae65abd prevent lexer from matching patterns across CR line endings (bug #41281) John W. Eaton <jwe@octave.org> parents: 18245 diff changeset	1079 \.\.\.{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	1080 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	1081
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1082 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	1083 }
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1084
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1085 %{
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1086 // Deprecated C preprocessor style continuation markers.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1087 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1088
17246 8be8a65d3ca8 Ignore anything after the continuation marker '...' (bug #38653) Stefan Mahr <dac922@gmx.de> parents: 17244 diff changeset	1089 \\{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	1090 \\{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	1091 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	1092
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1093 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	1094
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1095 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	1096
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1097 if (nm.empty ())
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1098 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	1099 else
e993fa124b46 Deprecate \ as continuation marker outside of double-quoted character strings. John W. Eaton <jwe@octave.org> parents: 17246 diff changeset	1100 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	1101 "%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	1102 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	1103
6470a113eae2 correctly handle deprecated \ continuation markers John W. Eaton <jwe@octave.org> parents: 17247 diff changeset	1104 curr_lexer->handle_continuation ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1105 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1106
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1107 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1108 // End of file.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1109 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1110
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1111 <<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	1112 return curr_lexer->handle_end_of_input ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1113 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1114
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1115 %{
16259 0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1116 // Identifiers.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1117 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1118
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1119 {IDENT} {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1120 curr_lexer->lexer_debug ("{IDENT}");
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1121
16259 0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1122 int tok = curr_lexer->previous_token_value ();
0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1123
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1124 if (curr_lexer->whitespace_is_significant ()
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1125 && curr_lexer->space_follows_previous_token ()
16259 0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1126 && ! (tok == '[' \|\| tok == '{'
0b5ab09dfce4 2/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16257 diff changeset	1127 \|\| curr_lexer->previous_token_is_binop ()))
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1128 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1129 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1130 unput (',');
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1131 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1132 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1133 {
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1134 if (! curr_lexer->looking_at_decl_list
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1135 && 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	1136 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1137 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1138 curr_lexer->push_start_state (COMMAND_START);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1139 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1140 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1141 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1142 int id_tok = curr_lexer->handle_identifier ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1143
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1144 if (id_tok >= 0)
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1145 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	1146 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1147 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1148 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1149
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1150 %{
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1151 // Superclass method identifiers.
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1152 %}
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1153
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1154 {IDENT}@{IDENT} \|
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1155 {IDENT}@{IDENT}.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1156 curr_lexer->lexer_debug ("{IDENT}@{IDENT}\|{IDENT}@{IDENT}.{IDENT}");
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1157
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1158 if (curr_lexer->previous_token_may_be_command ())
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1159 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1160 yyless (0);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1161 curr_lexer->push_start_state (COMMAND_START);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1162 }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1163 else
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1164 {
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1165 int id_tok = curr_lexer->handle_superclass_identifier ();
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1166
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1167 if (id_tok >= 0)
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1168 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1169 curr_lexer->looking_for_object_index = true;
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1170
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1171 return curr_lexer->count_token_internal (SUPERCLASSREF);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1172 }
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1173 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1174 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1175
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1176 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1177 // Metaclass query
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1178 %}
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1179
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1180 \?{IDENT} \|
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1181 \?{IDENT}\.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1182 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	1183
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1184 if (curr_lexer->previous_token_may_be_command ()
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1185 && curr_lexer->space_follows_previous_token ())
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1186 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1187 yyless (0);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1188 curr_lexer->push_start_state (COMMAND_START);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1189 }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1190 else
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1191 {
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1192 int id_tok = curr_lexer->handle_meta_identifier ();
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1193
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1194 if (id_tok >= 0)
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1195 {
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1196 curr_lexer->looking_for_object_index = true;
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1197
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1198 return curr_lexer->count_token_internal (METAQUERY);
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1199 }
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1200 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	1201 }
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1202
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	1203 "@" {
16334 06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1204 if (curr_lexer->previous_token_may_be_command ()
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1205 && curr_lexer->space_follows_previous_token ())
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1206 {
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1207 yyless (0);
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1208 curr_lexer->push_start_state (COMMAND_START);
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1209 }
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1210 else
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1211 {
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1212 curr_lexer->lexer_debug ("@");
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1213
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1214 curr_lexer->current_input_column++;
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1215
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1216 curr_lexer->looking_at_function_handle++;
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1217 curr_lexer->looking_for_object_index = false;
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1218 curr_lexer->at_beginning_of_statement = false;
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1219
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1220 return curr_lexer->count_token ('@');
06aa4c0f2018 handle foo @... as command syntax John W. Eaton <jwe@octave.org> parents: 16325 diff changeset	1221 }
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	1222 }
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	1223
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	1224 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1225 // 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	1226 // 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	1227 // 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	1228 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1229
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1230 {NL} {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1231 curr_lexer->lexer_debug ("{NL}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1232
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1233 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1234 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1235
16309 e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1236 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	1237 {
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1238 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	1239 curr_lexer->gripe_matlab_incompatible
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1240 ("bare newline inside parentheses");
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1241 }
e608de76742c allow newline to terminate anonymous function definition John W. Eaton <jwe@octave.org> parents: 16299 diff changeset	1242 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	1243 \|\| 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	1244 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1245 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	1246 return curr_lexer->count_token ('\n');
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1247 }
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1248 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	1249 return LEXICAL_ERROR;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1250 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1251
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1252 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1253 // 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	1254 // operator.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1255 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1256
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1257 "'" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1258 curr_lexer->lexer_debug ("'");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1259
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1260 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	1261 && curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1262 {
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1263 curr_lexer->current_input_column++;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1264 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	1265 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	1266 }
16681 d3619d4d267c recognize character string at beginning of statement (bug #38926, #38958) John W. Eaton <jwe@octave.org> parents: 16680 diff changeset	1267 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	1268 {
d3619d4d267c recognize character string at beginning of statement (bug #38926, #38958) John W. Eaton <jwe@octave.org> parents: 16680 diff changeset	1269 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1270 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	1271 }
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1272 else
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1273 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1274 int tok = curr_lexer->previous_token_value ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1275
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1276 if (curr_lexer->whitespace_is_significant ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1277 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1278 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	1279 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1280 if (tok == '[' \|\| tok == '{'
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1281 \|\| curr_lexer->previous_token_is_binop ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1282 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 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 (SQ_STRING_START);
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1285 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1286 else
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1287 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1288 yyless (0);
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1289 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	1290 // 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	1291 curr_lexer->current_input_column--;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1292 }
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1293 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1294 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1295 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1296 if (tok == '[' \|\| tok == '{'
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1297 \|\| curr_lexer->previous_token_is_binop ()
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1298 \|\| curr_lexer->previous_token_is_keyword ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1299 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1300 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1301 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	1302 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1303 else
16284 09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE. John W. Eaton <jwe@octave.org> parents: 16283 diff changeset	1304 return curr_lexer->count_token (HERMITIAN);
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1305 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1306 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1307 else
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1308 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1309 if (! tok \|\| tok == '[' \|\| tok == '{' \|\| tok == '('
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1310 \|\| curr_lexer->previous_token_is_binop ()
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1311 \|\| curr_lexer->previous_token_is_keyword ())
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1312 {
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1313 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1314 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	1315 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1316 else
16284 09881dab3aaf * lex.ll, oct-parse.in.yy (HERMITIAN): Rename token from QUOTE. John W. Eaton <jwe@octave.org> parents: 16283 diff changeset	1317 return curr_lexer->count_token (HERMITIAN);
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1318 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1319 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1320 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1321
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1322 %{
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1323 // Double quotes always begin strings.
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1324 %}
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1325
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	1326 \" {
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	1327 curr_lexer->lexer_debug ("\\\"");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1328
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1329 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	1330 && curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1331 {
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1332 curr_lexer->current_input_column++;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1333 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	1334 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	1335 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1336 else
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1337 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1338 int tok = curr_lexer->previous_token_value ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1339
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1340 if (curr_lexer->whitespace_is_significant ())
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1341 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1342 if (curr_lexer->space_follows_previous_token ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1343 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1344 if (tok == '[' \|\| tok == '{'
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1345 \|\| curr_lexer->previous_token_is_binop ())
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1346 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1347 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1348 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	1349 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1350 else
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1351 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1352 yyless (0);
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1353 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	1354 // 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	1355 curr_lexer->current_input_column--;
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1356 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1357 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1358 else
16261 b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1359 {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1360 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1361 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	1362 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1363 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1364 else
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1365 {
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1366 curr_lexer->current_input_column++;
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1367 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	1368 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1369 }
b45a90cdb0ae 3/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16259 diff changeset	1370 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1371
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	1372 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1373 // Other operators.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1374 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1375
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1376 ":" { CMD_OR_OP (":", ':', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1377 ".+" { CMD_OR_OP (".+", EPLUS, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1378 ".-" { CMD_OR_OP (".-", EMINUS, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1379 "." { CMD_OR_OP (".", EMUL, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1380 "./" { CMD_OR_OP ("./", EDIV, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1381 ".\\" { CMD_OR_OP (".\\", ELEFTDIV, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1382 ".^" { CMD_OR_OP (".^", EPOW, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1383 "." { CMD_OR_OP (".", EPOW, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1384 "<=" { CMD_OR_OP ("<=", EXPR_LE, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1385 "==" { CMD_OR_OP ("==", EXPR_EQ, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1386 "~=" { CMD_OR_OP ("~=", EXPR_NE, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1387 "!=" { CMD_OR_OP ("!=", EXPR_NE, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1388 ">=" { CMD_OR_OP (">=", EXPR_GE, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1389 "&" { CMD_OR_OP ("&", EXPR_AND, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1390 "\|" { CMD_OR_OP ("\|", EXPR_OR, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1391 "<" { CMD_OR_OP ("<", EXPR_LT, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1392 ">" { CMD_OR_OP (">", EXPR_GT, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1393 "" { CMD_OR_OP ("", '*', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1394 "/" { CMD_OR_OP ("/", '/', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1395
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1396 %{
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1397 // In Matlab, '\' may also trigger command syntax.
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1398 %}
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1399
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1400 "\\" { return curr_lexer->handle_op ("\\", LEFTDIV); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1401
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1402 "^" { CMD_OR_OP ("^", POW, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1403 "" { CMD_OR_OP ("", POW, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1404 "&&" { CMD_OR_OP ("&&", EXPR_AND_AND, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1405 "\|\|" { CMD_OR_OP ("\|\|", EXPR_OR_OR, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1406 "<<" { CMD_OR_OP ("<<", LSHIFT, false); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1407 ">>" { CMD_OR_OP (">>", RSHIFT, false); }
16265 71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1408
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1409 ";" {
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1410 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1411 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1412 \|\| curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1413
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1414 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	1415 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1416
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1417 "+" { CMD_OR_UNARY_OP ("+", '+', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1418 "-" { CMD_OR_UNARY_OP ("-", '-', true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1419
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1420 "~" { CMD_OR_UNARY_OP ("~", EXPR_NOT, true); }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1421 "!" { 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	1422
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1423 "," {
16265 71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1424 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1425 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1426 \|\| curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1427
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1428 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	1429 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1430
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1431 ".'" {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1432 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	1433 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1434
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1435 "++" { CMD_OR_UNARY_OP ("++", PLUS_PLUS, false); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1436 "--" { CMD_OR_UNARY_OP ("--", MINUS_MINUS, false); }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1437
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1438 "(" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1439 curr_lexer->lexer_debug ("(");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1440
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1441 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1442
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1443 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1444 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1445 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1446 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1447
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1448 if (! (tok == '[' \|\| tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1449 \|\| curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1450 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1451 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1452
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1453 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1454 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1455 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1456 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	1457 // 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	1458 curr_lexer->current_input_column--;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1459 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1460 else
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1461 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1462 // 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	1463 // 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	1464 // 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	1465 // the matching close paren).
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1466
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1467 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	1468 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1469
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1470 curr_lexer->looking_at_indirect_ref = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1471 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1472 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1473
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1474 curr_lexer->nesting_level.paren ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1475 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1476
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1477 return curr_lexer->handle_token ('(');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1478 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1479 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1480
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1481 ")" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1482 curr_lexer->lexer_debug (")");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1483
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1484 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1485 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1486
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1487 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	1488
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1489 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	1490 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	1491
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1492 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	1493 {
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1494 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	1495 curr_lexer->nesting_level.anon_fcn_body ();
71ee3afedb69 5/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16263 diff changeset	1496 }
13237 1bfca2bbea8b fix parsing of anonymous functions inside cell array lists. John W. Eaton <jwe@octave.org> parents: 12801 diff changeset	1497
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1498 return curr_lexer->count_token (')');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1499 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	1500
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1501 "." {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1502 curr_lexer->lexer_debug (".");
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1503
16325 fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1504 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	1505 && curr_lexer->space_follows_previous_token ())
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1506 {
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1507 yyless (0);
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1508 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	1509 }
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1510 else
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1511 {
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1512 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	1513 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	1514
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1515 return curr_lexer->handle_token ('.');
fc565603ccbb also accept "." as possibly beginning a command John W. Eaton <jwe@octave.org> parents: 16320 diff changeset	1516 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1517 }
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 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 %{
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1520 // = and op= operators.
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1521 %}
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1522
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1523 "=" {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1524 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	1525
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1526 return curr_lexer->handle_op ("=", '=');
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1527 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	1528
16680 de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1529 "+=" { CMD_OR_COMPUTED_ASSIGN_OP ("+=", ADD_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1530 "-=" { CMD_OR_COMPUTED_ASSIGN_OP ("-=", SUB_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1531 "=" { CMD_OR_COMPUTED_ASSIGN_OP ("=", MUL_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1532 "/=" { CMD_OR_COMPUTED_ASSIGN_OP ("/=", DIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1533 "\\=" { CMD_OR_COMPUTED_ASSIGN_OP ("\\=", LEFTDIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1534 ".+=" { CMD_OR_COMPUTED_ASSIGN_OP (".+=", ADD_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1535 ".-=" { CMD_OR_COMPUTED_ASSIGN_OP (".-=", SUB_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1536 ".=" { CMD_OR_COMPUTED_ASSIGN_OP (".=", EMUL_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1537 "./=" { CMD_OR_COMPUTED_ASSIGN_OP ("./=", EDIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1538 ".\\=" { CMD_OR_COMPUTED_ASSIGN_OP (".\\=", ELEFTDIV_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1539 "^=" { CMD_OR_COMPUTED_ASSIGN_OP ("^=", POW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1540 "**=" { CMD_OR_COMPUTED_ASSIGN_OP ("^=", POW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1541 ".^=" { CMD_OR_COMPUTED_ASSIGN_OP (".^=", EPOW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1542 ".**=" { CMD_OR_COMPUTED_ASSIGN_OP (".^=", EPOW_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1543 "&=" { CMD_OR_COMPUTED_ASSIGN_OP ("&=", AND_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1544 "\|=" { CMD_OR_COMPUTED_ASSIGN_OP ("\|=", OR_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1545 "<<=" { CMD_OR_COMPUTED_ASSIGN_OP ("<<=", LSHIFT_EQ); }
de79cdbbdf7c improve parsing of commands John W. Eaton <jwe@octave.org> parents: 16643 diff changeset	1546 ">>=" { 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	1547
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1548 %{
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1549 // In Matlab, '{' may also trigger command syntax.
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1550 %}
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	1551
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1552 "{" {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1553 curr_lexer->lexer_debug ("{");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1554
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1555 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1556
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1557 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1558 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1559 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1560 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1561
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	1562 if (! (tok == '[' \|\| tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1563 \|\| curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1564 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1565 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1566
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1567 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1568 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1569 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1570 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	1571 // 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	1572 curr_lexer->current_input_column--;
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1573 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1574 else
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1575 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1576 curr_lexer->nesting_level.brace ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1577
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1578 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	1579 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1580
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1581 curr_lexer->current_input_column += yyleng;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1582 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1583 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1584
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1585 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1586
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1587 curr_lexer->braceflag++;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1588
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1589 curr_lexer->push_start_state (MATRIX_START);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1590
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1591 return curr_lexer->count_token ('{');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	1592 }
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1593 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1594
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1595 "}" {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1596 curr_lexer->lexer_debug ("}");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1597
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1598 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	1599
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1600 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	1601 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	1602
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1603 curr_lexer->nesting_level.remove ();
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1604
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1605 return curr_lexer->handle_token ('}');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1606 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1607
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1608 %{
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1609 // Unrecognized input is a lexical error.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1610 %}
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1611
2042 31f4f775b8c6 [project @ 1996-03-28 09:06:28 by jwe] jwe parents: 1994 diff changeset	1612 . {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	1613 curr_lexer->lexer_debug (".");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1614
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	1615 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	1616
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	1617 int c = curr_lexer->text_yyinput ();
4248 eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1618
16294 0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1619 if (c == 1)
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1620 return -1;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1621 else if (c == EOF)
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1622 return curr_lexer->handle_end_of_input ();
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	1623 else
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1624 {
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	1625 curr_lexer->current_input_column++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1626
15466 d174210ce1ec use ' instead of ` in error messages, warnings and most comments John W. Eaton <jwe@octave.org> parents: 14161 diff changeset	1627 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	1628 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	1629 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	1630
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1631 return LEXICAL_ERROR;
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1632 }
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1633 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1634
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1635 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1636
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1637 static void
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1638 display_character (char c)
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 if (isgraph (c))
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1641 std::cerr << c;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1642 else
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1643 switch (c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1644 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1645 case 0:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1646 std::cerr << "NUL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1647 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1648
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1649 case 1:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1650 std::cerr << "SOH";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1651 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1652
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1653 case 2:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1654 std::cerr << "STX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1655 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1656
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1657 case 3:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1658 std::cerr << "ETX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1659 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1660
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1661 case 4:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1662 std::cerr << "EOT";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1663 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1664
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1665 case 5:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1666 std::cerr << "ENQ";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1667 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1668
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1669 case 6:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1670 std::cerr << "ACK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1671 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1672
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1673 case 7:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1674 std::cerr << "\\a";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1675 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1676
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1677 case 8:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1678 std::cerr << "\\b";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1679 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1680
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1681 case 9:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1682 std::cerr << "\\t";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1683 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1684
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1685 case 10:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1686 std::cerr << "\\n";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1687 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1688
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1689 case 11:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1690 std::cerr << "\\v";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1691 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1692
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1693 case 12:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1694 std::cerr << "\\f";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1695 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1696
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1697 case 13:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1698 std::cerr << "\\r";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1699 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1700
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1701 case 14:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1702 std::cerr << "SO";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1703 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1704
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1705 case 15:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1706 std::cerr << "SI";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1707 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1708
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1709 case 16:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1710 std::cerr << "DLE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1711 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1712
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1713 case 17:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1714 std::cerr << "DC1";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1715 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1716
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1717 case 18:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1718 std::cerr << "DC2";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1719 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1720
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1721 case 19:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1722 std::cerr << "DC3";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1723 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1724
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1725 case 20:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1726 std::cerr << "DC4";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1727 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1728
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1729 case 21:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1730 std::cerr << "NAK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1731 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1732
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1733 case 22:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1734 std::cerr << "SYN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1735 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1736
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1737 case 23:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1738 std::cerr << "ETB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1739 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1740
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1741 case 24:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1742 std::cerr << "CAN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1743 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1744
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1745 case 25:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1746 std::cerr << "EM";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1747 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1748
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1749 case 26:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1750 std::cerr << "SUB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1751 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1752
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1753 case 27:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1754 std::cerr << "ESC";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1755 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1756
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1757 case 28:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1758 std::cerr << "FS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1759 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1760
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1761 case 29:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1762 std::cerr << "GS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1763 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1764
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1765 case 30:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1766 std::cerr << "RS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1767 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1768
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1769 case 31:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1770 std::cerr << "US";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1771 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1772
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1773 case 32:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1774 std::cerr << "SPACE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1775 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1776
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1777 case 127:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1778 std::cerr << "DEL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1779 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1780 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1781 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1782
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1783 bool
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1784 is_keyword (const std::string& s)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1785 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1786 // Parsing function names like "set.property_name" inside
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1787 // 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	1788 // "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	1789 // 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	1790 // 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	1791
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1792 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	1793 && ! (s == "set" \|\| s == "get"));
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1794 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1795
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1796 DEFUN (iskeyword, args, ,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1797 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1798 @deftypefn {Built-in Function} {} iskeyword ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1799 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1800 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	1801 is omitted, return a list of keywords.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1802 @seealso{isvarname, exist}\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1803 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1804 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1805 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1806
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1807 int argc = args.length () + 1;
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 string_vector argv = args.make_argv ("iskeyword");
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 if (error_state)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1812 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1813
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1814 if (argc == 1)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1815 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1816 // 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	1817 // is_keyword function for additional details.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1818
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1819 string_vector lst (TOTAL_KEYWORDS);
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 int j = 0;
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 for (int i = 0; i < TOTAL_KEYWORDS; i++)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1824 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1825 std::string tmp = wordlist[i].name;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1826
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1827 if (! (tmp == "set" \|\| tmp == "get"))
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1828 lst[j++] = tmp;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1829 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1830
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1831 lst.resize (j);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1832
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1833 retval = Cell (lst.sort ());
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1834 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1835 else if (argc == 2)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1836 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1837 retval = is_keyword (argv[1]);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1838 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1839 else
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1840 print_usage ();
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1841
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1842 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1843 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1844
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1845 /*
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1846
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1847 %!assert (iskeyword ("for"))
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1848 %!assert (iskeyword ("fort"), false)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1849 %!assert (iskeyword ("fft"), false)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1850
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1851 */
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1852
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1853 // Used to delete trailing white space from tokens.
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1854
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1855 static std::string
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1856 strip_trailing_whitespace (char *s)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1857 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1858 std::string retval = s;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1859
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1860 size_t pos = retval.find_first_of (" \t");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1861
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1862 if (pos != std::string::npos)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1863 retval.resize (pos);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1864
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1865 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1866 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1867
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1868 DEFUN (__display_tokens__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1869 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1870 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1871 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	1872 lexer displays tokens as they are read.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1873 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1874 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1875 return SET_INTERNAL_VARIABLE (display_tokens);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1876 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1877
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1878 DEFUN (__token_count__, , ,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1879 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1880 @deftypefn {Built-in Function} {} __token_count__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1881 Number of language tokens processed since Octave startup.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1882 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1883 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1884 return octave_value (Vtoken_count);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1885 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1886
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1887 DEFUN (__lexer_debug_flag__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1888 "-- texinfo --\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1889 @deftypefn {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val}))\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1890 Undocumented internal function.\n\
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1891 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1892 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1893 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1894
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1895 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	1896 "__lexer_debug_flag__");
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1897
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1898 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1899 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	1900
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16183 diff changeset	1901 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	1902 {
16230 4bf907906134 use a queue to hold tokens in the lexer John W. Eaton <jwe@octave.org> parents: 16229 diff changeset	1903 tokens.clear ();
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1904 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1905
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1906 void
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1907 lexical_feedback::init (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1908 {
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1909 // 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	1910 // index.
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1911 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	1912 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1913
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1914 void
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1915 lexical_feedback::reset (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1916 {
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1917 end_of_input = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1918 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	1919 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	1920 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	1921 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	1922 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	1923 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	1924 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	1925 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	1926 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	1927 parsing_class_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1928 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	1929 parsing_classdef = false;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1930 force_script = false;
16199 810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1931 reading_fcn_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1932 reading_script_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16195 diff changeset	1933 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	1934 input_line_number = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1935 current_input_column = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1936 bracketflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1937 braceflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1938 looping = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1939 defining_func = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1940 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	1941 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	1942 token_count = 0;
16207 0467d68ca891 move current_input_line to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16203 diff changeset	1943 current_input_line = "";
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	1944 comment_text = "";
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1945 help_text = "";
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1946 string_text = "";
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1947 string_line = 0;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	1948 string_column = 0;
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1949 fcn_file_name = "";
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	1950 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	1951 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	1952 looking_at_object_index.push_front (false);
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	1953 command_arg_paren_count = 0;
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1954
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1955 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	1956 parsed_function_name.pop ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1957
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1958 nesting_level.reset ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1959
16230 4bf907906134 use a queue to hold tokens in the lexer John W. Eaton <jwe@octave.org> parents: 16229 diff changeset	1960 tokens.clear ();
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1961 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	1962
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1963 int
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1964 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	1965 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1966 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1967 return tok ? tok->token_value () : 0;
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1968 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1969
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1970 bool
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1971 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	1972 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1973 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1974 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	1975 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1976
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1977 void
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1978 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	1979 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1980 token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1981 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	1982 tok->mark_trailing_space ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1983 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1984
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1985 bool
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1986 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	1987 {
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1988 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1989 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	1990 }
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	1991
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1992 bool
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1993 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	1994 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1995 int tok = previous_token_value ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1996
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1997 return (tok == '+' \|\| tok == '-' \|\| tok == '@'
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1998 \|\| tok == ',' \|\| tok == ';' \|\| tok == '*' \|\| tok == '/'
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	1999 \|\| tok == ':' \|\| tok == '=' \|\| tok == ADD_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2000 \|\| 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	2001 \|\| 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	2002 \|\| tok == EMINUS \|\| tok == EMUL \|\| tok == EMUL_EQ
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2003 \|\| 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	2004 \|\| 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	2005 \|\| 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	2006 \|\| 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	2007 \|\| 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	2008 \|\| 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	2009 \|\| 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	2010 \|\| 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	2011 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2012
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2013 bool
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2014 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	2015 {
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2016 const token *tok = tokens.front ();
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2017 return tok ? tok->is_keyword () : false;
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2018 }
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2019
15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2020 bool
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2021 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	2022 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2023 const token *tok = tokens.front ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2024 return tok ? tok->may_be_command () : false;
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2025 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2026
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2027 void
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2028 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	2029 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2030 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	2031
d56cbc17566e avoid looking at previous token that doesn't exist (bug #39180) John W. Eaton <jwe@octave.org> parents: 16681 diff changeset	2032 if (tok && tok->is_symbol ())
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2033 pending_local_variables.insert (tok->symbol_name ());
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2034 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2035
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2036 void
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2037 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	2038 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2039 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	2040 p != lst.end (); p++)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2041 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2042 pending_local_variables.insert (*p);
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2043 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2044 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2045
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2046 static bool
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2047 looks_like_copyright (const std::string& s)
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2048 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2049 bool retval = false;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2050
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2051 if (! s.empty ())
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2052 {
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2053 size_t offset = s.find_first_not_of (" \t");
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2054
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2055 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	2056 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2057
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2058 return retval;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2059 }
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	2060
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	2061 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2062 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	2063 {
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	2064 buffer = input;
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2065 chars_left = buffer.length ();
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2066 pos = buffer.c_str ();
16195 b52d2f9294b6 use class for reading lexer input John W. Eaton <jwe@octave.org> parents: 16194 diff changeset	2067 eof = eof_arg;
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2068 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2069
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2070 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2071 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	2072 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2073 static const char * const eol = "\n";
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2074
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2075 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	2076 assert (len > 0);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2077
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2078 memcpy (buf, pos, len);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2079
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2080 chars_left -= len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2081 pos += len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2082
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2083 // 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	2084 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	2085 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2086 if (len < max_size)
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2087 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2088 // 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	2089 // the buffer.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2090 buf[len++] = '\n';
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2091 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2092 else
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2093 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2094 // 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	2095 // 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	2096 // call to octave_base_lexer::read.
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2097 pos = eol;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2098 chars_left = 1;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2099 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2100 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2101
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2102 return len;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2103 }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16166 diff changeset	2104
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2105 octave_base_lexer::~octave_base_lexer (void)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2106 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2107 yylex_destroy (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2108 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2109
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2110 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2111 octave_base_lexer::init (void)
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2112 {
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2113 yylex_init (&scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2114
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2115 // 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	2116 // flex-generated lexer.
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2117 yyset_extra (this, scanner);
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2118
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2119 clear_start_state ();
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2120 }
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2121
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2122 // 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	2123 // 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	2124 // (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	2125 // 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	2126 // OCTAVE_YYG macro.
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2127
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2128 #define OCTAVE_YYG \
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2129 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	2130
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2131 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2132 octave_base_lexer::reset (void)
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2133 {
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2134 // 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	2135 clear_start_state ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2136
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2137 symtab_context.clear ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2138
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2139 // 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	2140 promptflag (1);
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2141
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2142 // 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	2143 // input.
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2144
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2145 if (! quitting_gracefully
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2146 && (interactive \|\| forced_interactive)
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2147 && ! (reading_fcn_file
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2148 \|\| reading_classdef_file
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2149 \|\| reading_script_file
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2150 \|\| input_from_eval_string ()))
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2151 yyrestart (stdin, scanner);
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2152
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	2153 lexical_feedback::reset ();
17693 efbe746f8fa8 eliminate octave_comment_buffer singleton John W. Eaton <jwe@octave.org> parents: 17355 diff changeset	2154
efbe746f8fa8 eliminate octave_comment_buffer singleton John W. Eaton <jwe@octave.org> parents: 17355 diff changeset	2155 comment_buf.reset ();
16123 a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2156 }
a484e39d1f22 maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	2157
16124 3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	2158 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2159 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	2160 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2161 reading_script_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2162
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2163 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	2164 }
3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16123 diff changeset	2165
16898 531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2166 void
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2167 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	2168 {
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2169 string_line = input_line_number;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2170 string_column = current_input_column;
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2171
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2172 push_start_state (state);
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2173 }
531473481084 rewrite string parsing to avoid unlimited lookahead John W. Eaton <jwe@octave.org> parents: 16788 diff changeset	2174
16121 bdf365c5c9bf maint: move function definition in lex.ll John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	2175 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2176 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	2177 {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	2178 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	2179
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2180 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	2181 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2182 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	2183
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2184 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	2185 && ! 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	2186 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	2187 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	2188 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2189
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	2190 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	2191 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2192
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2193 char *
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2194 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	2195 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2196 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	2197 }
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2198
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2199 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2200 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	2201 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2202 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	2203 }
421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2204
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2205 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2206 octave_base_lexer::text_yyinput (void)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2207 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2208 int c = yyinput (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2209
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2210 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2211 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2212 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2213 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2214 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2215 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2216
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2217 // 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	2218
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2219 if (c == '\r')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2220 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2221 c = yyinput (scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2222
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2223 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2224 {
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2225 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2226 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2227 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2228 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2229
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2230 if (c != '\n')
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2231 {
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2232 xunput (c);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2233 c = '\n';
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2234 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2235 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2236
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2237 return c;
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2238 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2239
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2240 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2241 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	2242 {
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	2243 if (c != EOF)
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2244 {
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	2245 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	2246 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2247 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	2248 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	2249 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	2250 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2251
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	2252 yyunput (c, buf, scanner);
16114 73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2253 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2254 }
73a21ade0b6b * lex.ll: Reorder function definitions. John W. Eaton <jwe@octave.org> parents: 16113 diff changeset	2255
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2256 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2257 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	2258 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2259 char *yytxt = flex_yytext ();
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2260
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2261 xunput (c, yytxt);
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2262 }
96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	2263
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2264 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2265 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	2266 {
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2267 int c = text_yyinput ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2268 xunput (c);
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2269 return (c == ' ' \|\| c == '\t');
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2270 }
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2271
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2272 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2273 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	2274 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2275 bool retval = false;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2276
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2277 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	2278 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	2279 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2280 if (*i)
10315 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 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2283 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2284 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2285 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2286
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2287 return retval;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2288 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2289
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2290 bool
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2291 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	2292 {
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2293 return (symbol_table::is_variable (name)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2294 \|\| (pending_local_variables.find (name)
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2295 != pending_local_variables.end ()));
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2296 }
11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2297
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	2298 // 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	2299
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2300 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2301 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	2302 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2303 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	2304 int c = current_input_column;
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2305
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	2306 int len = s.length ();
922 708827b941b4 [project @ 1994-11-14 22:14:13 by jwe] jwe parents: 916 diff changeset	2307
5088 7830f271a53f [project @ 2004-12-01 19:54:45 by jwe] jwe parents: 5035 diff changeset	2308 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	2309
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2310 if (kw)
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	2311 {
18319 f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2312 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	2313
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2314 // 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	2315 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	2316
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2317 token *tok_val = 0;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2318
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2319 switch (kw->kw_id)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2320 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2321 case break_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2322 case catch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2323 case continue_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2324 case else_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2325 case otherwise_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2326 case return_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2327 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	2328 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2329 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2330
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2331 case static_kw:
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2332 if ((reading_fcn_file \|\| reading_script_file
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2333 \|\| reading_classdef_file)
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2334 && ! fcn_file_full_name.empty ())
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2335 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	2336 "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	2337 input_line_number,
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2338 fcn_file_full_name.c_str ());
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2339 else
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2340 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	2341 "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	2342 input_line_number);
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2343 // fall through ...
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2344
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2345 case persistent_kw:
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	2346 case global_kw:
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	2347 looking_at_decl_list = true;
14294 9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2348 break;
9e3983c8963c deprecate the static keyword John W. Eaton <jwe@octave.org> parents: 14292 diff changeset	2349
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2350 case case_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2351 case elseif_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2352 case until_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2353 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2354
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2355 case end_kw:
14645 cbc00b587f36 also allow "end" indexing in classdef files John W. Eaton <jwe@octave.org> parents: 14642 diff changeset	2356 if (inside_any_object_index ()
cbc00b587f36 also allow "end" indexing in classdef files John W. Eaton <jwe@octave.org> parents: 14642 diff changeset	2357 \|\| (! reading_classdef_file
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2358 && (defining_func
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2359 && ! (looking_at_return_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2360 \|\| 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	2361 {
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2362 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	2363 return 0;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2364 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2365
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2366 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	2367 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2368 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2369
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2370 case end_try_catch_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2371 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	2372 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2373 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2374
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2375 case end_unwind_protect_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2376 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	2377 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	2378 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2379 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2380
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2381 case endfor_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2382 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	2383 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2384 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2385
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2386 case endfunction_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2387 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	2388 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2389 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2390
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2391 case endif_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2392 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	2393 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2394 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2395
13246 0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	2396 case endparfor_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2397 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	2398 at_beginning_of_statement = true;
13246 0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	2399 break;
0c69a564f2be additional parfor changes John W. Eaton <jwe@octave.org> parents: 13245 diff changeset	2400
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2401 case endswitch_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2402 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	2403 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2404 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2405
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2406 case endwhile_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2407 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	2408 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2409 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2410
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2411 case endclassdef_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2412 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	2413 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2414 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2415
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2416 case endenumeration_kw:
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2417 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	2418 at_beginning_of_statement = true;
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2419 break;
7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2420
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2421 case endevents_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2422 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	2423 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2424 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2425
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2426 case endmethods_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2427 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	2428 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2429 break;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2430
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2431 case endproperties_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2432 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	2433 at_beginning_of_statement = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2434 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2435
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	2436
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2437 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	2438 case parfor_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2439 case while_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2440 decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2441 looping++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2442 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2443
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2444 case do_kw:
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2445 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	2446 decrement_promptflag ();
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2447 looping++;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2448 break;
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 case try_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2451 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	2452 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	2453 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2454 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2455
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2456 case if_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2457 case switch_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2458 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2459 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2460
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2461 case get_kw:
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2462 case set_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2463 // 'get' and 'set' are keywords in classdef method
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2464 // declarations.
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2465 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	2466 {
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2467 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	2468 return 0;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2469 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2470 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2471
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2472 case enumeration_kw:
7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2473 case events_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2474 case methods_kw:
13249 7861a5fd3479 accept enumeration keyword John W. Eaton <jwe@octave.org> parents: 13246 diff changeset	2475 case properties_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2476 // 'properties', 'methods' and 'events' are keywords for
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2477 // classdef blocks.
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2478 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	2479 {
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2480 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	2481 return 0;
f59459404f55 allow "methods ftp" to work outside of classdef (bug #41227) John W. Eaton <jwe@octave.org> parents: 18311 diff changeset	2482 }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2483 // fall through ...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2484
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2485 case classdef_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2486 // '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	2487 decrement_promptflag ();
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2488
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2489 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	2490 {
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2491 reading_classdef_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2492 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2493 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2494 break;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2495
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2496 case function_kw:
16209 e7ff32e7cf82 move global promptflag variable to octave_reader class John W. Eaton <jwe@octave.org> parents: 16207 diff changeset	2497 decrement_promptflag ();
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2498
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2499 defining_func++;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2500 parsed_function_name.push (false);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2501
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2502 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	2503 {
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2504 reading_fcn_file = true;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2505 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2506 }
127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2507
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2508 if (! (reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2509 \|\| reading_classdef_file))
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2510 input_line_number = 1;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2511 break;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2512
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2513 case magic_file_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2514 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2515 if ((reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2516 \|\| reading_classdef_file)
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2517 && ! fcn_file_full_name.empty ())
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2518 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	2519 fcn_file_full_name, l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2520 else
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2521 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	2522 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2523 break;
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2524
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	2525 case magic_line_kw:
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2526 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	2527 "", l, c);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2528 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2529
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2530 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2531 panic_impossible ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2532 }
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2533
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2534 if (! tok_val)
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	2535 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	2536
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	2537 push_token (tok_val);
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2538
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	2539 return kw->tok;
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	2540 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2541
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2542 return 0;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2543 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2544
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2545 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2546 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	2547 {
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2548 return (nesting_level.is_bracket ()
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2549 \|\| (nesting_level.is_brace ()
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2550 && ! looking_at_object_index.front ()));
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2551 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2552
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2553 static inline bool
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2554 looks_like_hex (const char *s, int len)
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2555 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2556 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	2557 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2558
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2559 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2560 octave_base_lexer::handle_number (void)
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2561 {
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2562 double value = 0.0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2563 int nread = 0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2564
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2565 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2566
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2567 if (looks_like_hex (yytxt, strlen (yytxt)))
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2568 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2569 unsigned long ival;
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2570
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2571 nread = sscanf (yytxt, "%lx", &ival);
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2572
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2573 value = static_cast<double> (ival);
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2574 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2575 else
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2576 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2577 char *tmp = strsave (yytxt);
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2578
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2579 char *idx = strpbrk (tmp, "Dd");
2621 337a09dd1c06 [project @ 1997-01-24 21:49:41 by jwe] jwe parents: 2614 diff changeset	2580
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2581 if (idx)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2582 *idx = 'e';
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2583
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2584 nread = sscanf (tmp, "%lf", &value);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2585
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2586 delete [] tmp;
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2587 }
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2588
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2589 // 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	2590
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2591 assert (nread == 1);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2592
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2593 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	2594 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	2595
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2596 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	2597 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2598
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2599 current_input_column += flex_yyleng ();
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2600 }
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2601
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2602 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2603 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	2604 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2605 char *yytxt = flex_yytext ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2606 int yylng = flex_yyleng ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2607
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2608 int offset = 1;
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2609 if (yytxt[0] == '\\')
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2610 gripe_matlab_incompatible_continuation ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2611 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2612 offset = 3;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2613
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2614 bool have_space = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2615 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2616 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2617 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2618 if (c == ' ' \|\| c == '\t')
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2619 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2620 have_space = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2621 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2622 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2623 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2624 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2625 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2626
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2627 if (have_space)
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2628 mark_previous_token_trailing_space ();
12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2629
16253 a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2630 bool have_comment = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2631 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2632 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2633 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2634 if (c == '#' \|\| c == '%')
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2635 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2636 have_comment = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2637 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2638 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2639 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2640 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2641 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2642
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2643 if (have_comment)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2644 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2645 comment_text = &yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2646
18245 1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2647 // 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	2648 // 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	2649 // 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	2650
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2651 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	2652
16337 6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	2653 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	2654
1f072ae35ede fix parsing of single quote after continuation and comment (bug #41048) John W. Eaton <jwe@octave.org> parents: 18134 diff changeset	2655 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	2656 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2657
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2658 decrement_promptflag ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2659 input_line_number++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2660 current_input_column = 1;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2661 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2662
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2663 void
16337 6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549) John W. Eaton <jwe@octave.org> parents: 16334 diff changeset	2664 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	2665 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2666 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	2667
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2668 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	2669 && ! comment_text.empty () && ! copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2670 help_text = comment_text;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2671
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2672 if (copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2673 typ = octave_comment_elt::copyright;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2674
17693 efbe746f8fa8 eliminate octave_comment_buffer singleton John W. Eaton <jwe@octave.org> parents: 17355 diff changeset	2675 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	2676
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2677 comment_text = "";
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2678
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2679 at_beginning_of_statement = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2680 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer John W. Eaton <jwe@octave.org> parents: 16231 diff changeset	2681
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2682 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2683 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	2684 {
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2685 int retval = bracket_type;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2686
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2687 if (! nesting_level.none ())
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2688 {
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2689 nesting_level.remove ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2690
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2691 if (bracket_type == ']')
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2692 bracketflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2693 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	2694 braceflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2695 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2696 panic_impossible ();
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2697 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2698
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	2699 pop_start_state ();
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2700
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2701 return retval;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2702 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2703
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2704 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2705 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	2706 {
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2707 bool space_before = space_follows_previous_token ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2708 bool space_after = looking_at_space ();
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2709
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2710 return (space_before && ! space_after
dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	2711 && previous_token_may_be_command ());
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2712 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2713
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2714 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2715 octave_base_lexer::handle_superclass_identifier (void)
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2716 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2717 std::string pkg;
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2718 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2719 std::string meth = strip_trailing_whitespace (yytxt);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2720 size_t pos = meth.find ("@");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2721 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	2722 meth = meth.substr (0, pos - 1);
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2723
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2724 pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2725 if (pos != std::string::npos)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2726 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2727 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2728 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2729 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2730
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2731 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	2732 \|\| is_keyword_token (pkg));
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2733 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2734 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2735 error ("method, class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2736 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2737 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2738
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2739 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	2740
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2741 push_token (new token
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2742 (SUPERCLASSREF,
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2743 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	2744 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	2745 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	2746 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	2747
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2748 current_input_column += flex_yyleng ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2749
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2750 return SUPERCLASSREF;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2751 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2752
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2753 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2754 octave_base_lexer::handle_meta_identifier (void)
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2755 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2756 std::string pkg;
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2757 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2758 std::string cls = strip_trailing_whitespace (yytxt).substr (1);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2759 size_t pos = cls.find (".");
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2760
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2761 if (pos != std::string::npos)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2762 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2763 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2764 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2765 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2766
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2767 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	2768 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2769 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2770 error ("class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2771 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2772 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2773
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2774 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	2775
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2776 push_token (new token
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2777 (METAQUERY,
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2778 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	2779 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	2780 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	2781
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2782 current_input_column += flex_yyleng ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	2783
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2784 return METAQUERY;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2785 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	2786
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2787 // 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	2788 // an identifier. Handles keywords. Return -1 if the identifier
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	2789 // should be ignored.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2790
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2791 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2792 octave_base_lexer::handle_identifier (void)
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2793 {
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2794 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	2795
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2796 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	2797
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2798 // If we are expecting a structure element, avoid recognizing
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2799 // 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	2800 // 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	2801 // decide whether to insert a comma.
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	2802
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2803 if (looking_at_indirect_ref)
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2804 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2805 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	2806 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2807
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2808 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	2809
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2810 current_input_column += flex_yyleng ();
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	2811
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2812 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	2813
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2814 return STRUCT_ELT;
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2815 }
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	2816
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2817 // 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	2818 // 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	2819 // 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	2820
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2821 int kw_token = is_keyword_token (tok);
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2822
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2823 if (looking_at_function_handle)
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2824 {
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2825 if (kw_token)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2826 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2827 error ("function handles may not refer to keywords");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2828
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2829 return LEXICAL_ERROR;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2830 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2831 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2832 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	2833 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	2834 current_input_column));
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2835
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2836 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	2837 looking_for_object_index = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2838
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2839 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2840
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2841 return FCN_HANDLE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2842 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2843 }
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	2844
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	2845 // 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	2846 // Keywords can be followed by identifiers.
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2847
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2848 if (kw_token)
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2849 {
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	2850 if (kw_token >= 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2851 {
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2852 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	2853 looking_for_object_index = false;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2854 }
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	2855
16783 0bf1d559b321 always set at_beginning_of_statement when recognizing keywords (bug #38758) John W. Eaton <jwe@octave.org> parents: 16756 diff changeset	2856 // 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	2857
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	2858 return kw_token;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2859 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2860
17355 f0edd6c752e9 don't convert "end" token to "__end__" for indexing John W. Eaton <jwe@octave.org> parents: 17343 diff changeset	2861 // Find the token in the symbol table.
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2862
16320 09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2863 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	2864
09f0cb9cac7d don't modify symbol table scope in the parser John W. Eaton <jwe@octave.org> parents: 16309 diff changeset	2865 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	2866 input_line_number, current_input_column);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2867
16788 f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2868 // 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	2869 //
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2870 // pi +1
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2871 //
f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2872 // 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	2873 // 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	2874
16269 488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2875 if (at_beginning_of_statement
16360 11115c237231 recognize variables when parsing (bug #38576) John W. Eaton <jwe@octave.org> parents: 16337 diff changeset	2876 && (! (is_variable (tok)
16788 f89de736eecd correctly parse expressions like pi+1 (bug #39301) John W. Eaton <jwe@octave.org> parents: 16783 diff changeset	2877 \|\| tok == "e" \|\| tok == "pi"
16269 488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2878 \|\| tok == "I" \|\| tok == "i"
488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2879 \|\| tok == "J" \|\| tok == "j"
488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2880 \|\| tok == "Inf" \|\| tok == "inf"
488b0fef52c5 7/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16267 diff changeset	2881 \|\| tok == "NaN" \|\| tok == "nan")))
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2882 tok_val->mark_may_be_command ();
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2883
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2884 push_token (tok_val);
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2885
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	2886 current_input_column += flex_yyleng ();
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2887
17355 f0edd6c752e9 don't convert "end" token to "__end__" for indexing John W. Eaton <jwe@octave.org> parents: 17343 diff changeset	2888 // 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	2889
f0edd6c752e9 don't convert "end" token to "__end__" for indexing John W. Eaton <jwe@octave.org> parents: 17343 diff changeset	2890 if (tok != "end")
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2891 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	2892
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2893 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	2894
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2895 return NAME;
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2896 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	2897
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2898 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2899 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	2900 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2901 std::string nm = fcn_file_full_name;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2902
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2903 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2904 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	2905 "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	2906 sep, input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2907 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2908 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	2909 "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	2910 sep, input_line_number, nm.c_str ());
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2911 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2912
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2913 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2914 octave_base_lexer::gripe_single_quote_string (void)
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2915 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2916 std::string nm = fcn_file_full_name;
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2917
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2918 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2919 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2920 "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	2921 input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2922 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	2923 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2924 "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	2925 input_line_number, nm.c_str ());
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2926 }
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2927
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2928 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2929 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	2930 {
16203 127cccb037bf move more global parser and lexer variables to classes John W. Eaton <jwe@octave.org> parents: 16199 diff changeset	2931 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	2932
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2933 if (nm.empty ())
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2934 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2935 "potential Matlab compatibility problem: %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2936 msg.c_str ());
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2937 else
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	2938 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2939 "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	2940 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	2941 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2942
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2943 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2944 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	2945 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2946 if (c == '#')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2947 gripe_matlab_incompatible ("# used as comment character");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2948 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2949
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2950 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2951 octave_base_lexer::gripe_matlab_incompatible_continuation (void)
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2952 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2953 gripe_matlab_incompatible ("\\ used as line continuation marker");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2954 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2955
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	2956 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2957 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	2958 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2959 std::string t = op;
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2960 int n = t.length ();
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2961 if (t[n-1] == '\n')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2962 t.resize (n-1);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2963 gripe_matlab_incompatible (t + " used as operator");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	2964 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2965
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2966 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2967 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	2968 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2969 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2970 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	2971 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	2972 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2973
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2974 token *
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2975 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	2976 {
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2977 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	2978 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	2979 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2980
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	2981 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	2982 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	2983 {
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2984 switch (tok)
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 '=': std::cerr << "'='\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2987 case ':': std::cerr << "':'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2988 case '-': std::cerr << "'-'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2989 case '+': std::cerr << "'+'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2990 case '': std::cerr << "''\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2991 case '/': std::cerr << "'/'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	2992 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	2993 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	2994 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	2995 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	2996 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	2997 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	2998 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	2999 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	3000 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	3001 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	3002 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	3003 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	3004 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	3005 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	3006 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	3007 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	3008 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	3009 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	3010 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	3011 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	3012 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	3013 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	3014 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	3015 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	3016 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	3017 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	3018 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	3019 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	3020 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	3021 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	3022 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	3023 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	3024 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	3025 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	3026 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	3027 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	3028 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	3029 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	3030 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	3031
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3032 case NUM:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3033 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	3034 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3035 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	3036 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	3037 << " [" << 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	3038 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3039 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3040
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3041 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	3042 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3043 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	3044 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	3045 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3046 break;
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3047
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3048 case NAME:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3049 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3050 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	3051 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	3052 std::cerr << "NAME";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3053 if (sr)
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3054 std::cerr << " [" << sr->name () << "]";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3055 std::cerr << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3056 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3057 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3058
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3059 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	3060
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3061 case DQ_STRING:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3062 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	3063 {
16148 10abbc493f50 delete unnecessary X-> references inside class X member functions John W. Eaton <jwe@octave.org> parents: 16146 diff changeset	3064 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	3065
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	3066 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	3067 << " [" << 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	3068 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3069 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3070
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3071 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	3072 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	3073 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	3074 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	3075 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	3076 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	3077 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	3078 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	3079 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	3080 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	3081 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	3082 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	3083 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	3084 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	3085 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	3086 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	3087 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	3088 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	3089 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	3090 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	3091 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	3092 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	3093 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	3094 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	3095 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	3096 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	3097 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	3098 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	3099 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	3100 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	3101 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	3102 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	3103 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	3104 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	3105 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	3106 default:
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3107 {
16166 cb80b1d062b1 don't attempt to print unprintable tokens John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	3108 if (tok < 256 && tok > 31)
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3109 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	3110 else
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3111 std::cerr << "UNKNOWN(" << tok << ")\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3112 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3113 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3114 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3115 }
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3116
b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3117 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3118 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	3119 {
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3120 error (msg);
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3121
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3122 OCTAVE_QUIT;
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3123
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16148 diff changeset	3124 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	3125 }
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3126
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	3127 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3128 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	3129 {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3130 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3131 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3132 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3133
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3134 display_start_state ();
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3135
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3136 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	3137 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	3138 }
16119 b31eb56f4d84 maint: reorder class definitions in lex.ll John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	3139 }
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3140
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3141 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3142 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	3143 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3144 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3145
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3146 start_state_stack.push (state);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3147
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3148 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3149 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3150
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3151 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3152 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	3153 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3154 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3155
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3156 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3157
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3158 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3159 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3160
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3161 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3162 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	3163 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3164 while (! start_state_stack.empty ())
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3165 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3166
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3167 push_start_state (INITIAL);
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3168 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3169
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3170 void
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3171 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	3172 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3173 std::cerr << "S: ";
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3174
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3175 switch (start_state ())
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3176 {
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3177 case INITIAL:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3178 std::cerr << "INITIAL" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3179 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3180
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3181 case COMMAND_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3182 std::cerr << "COMMAND_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3183 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3184
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3185 case MATRIX_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3186 std::cerr << "MATRIX_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3187 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3188
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3189 case INPUT_FILE_START:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3190 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	3191 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3192
16228 e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3193 case BLOCK_COMMENT_START:
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3194 std::cerr << "BLOCK_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3195 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3196
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3197 case LINE_COMMENT_START:
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3198 std::cerr << "LINE_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3199 break;
e19b1632d7c1 revamp most comment handling John W. Eaton <jwe@octave.org> parents: 16224 diff changeset	3200
16903 f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3201 case DQ_STRING_START:
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3202 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	3203 break;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3204
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3205 case SQ_STRING_START:
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3206 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	3207 break;
f21194531877 improve character string handling in the lexer John W. Eaton <jwe@octave.org> parents: 16898 diff changeset	3208
16224 4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3209 default:
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3210 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	3211 break;
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3212 }
4a848eb52de2 use stack for tracking lexer start states John W. Eaton <jwe@octave.org> parents: 16209 diff changeset	3213 }
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3214
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3215 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3216 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	3217 {
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3218 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3219
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	3220 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	3221 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3222
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3223 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3224 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	3225 bool bos)
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3226 {
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3227 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3228
16275 dd7de0345124 10/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16273 diff changeset	3229 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	3230 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3231
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3232 bool
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3233 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	3234 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3235 int prev_tok = previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3236
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3237 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3238
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3239 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	3240 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3241 int c = text_yyinput ();
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3242 xunput (c);
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3243
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3244 bool space_after = (c == ' ' \|\| c == '\t');
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3245
16267 15f55df088e7 6/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16265 diff changeset	3246 if (! (prev_tok == '[' \|\| prev_tok == '{'
16263 9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3247 \|\| previous_token_is_binop ()
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3248 \|\| ((tok == '+' \|\| tok == '-') && space_after)))
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3249 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3250 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3251
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3252 return unput_comma;
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3253 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3254
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 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::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	3257 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3258 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	3259 ? -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	3260 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3261
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3262 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3263 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	3264 {
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3265 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	3266 ? -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	3267 }
9acb86e6ac90 4/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16261 diff changeset	3268
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3269 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3270 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	3271 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3272 if (! compat)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3273 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	3274
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	3275 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	3276
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3277 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	3278 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	3279 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	3280
16643 4258750c76ed don't push operator tokens twice John W. Eaton <jwe@octave.org> parents: 16365 diff changeset	3281 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	3282 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3283
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3284 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3285 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	3286 {
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	3287 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	3288 current_input_column);
16231 2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3289
2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3290 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	3291 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3292
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3293 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3294 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	3295 {
16231 2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3296 if (! tok_val)
16255 12bf6a3f8c45 store more info in token value class John W. Eaton <jwe@octave.org> parents: 16253 diff changeset	3297 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	3298
2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3299 push_token (tok_val);
2b15ae55c721 put all tokens in the token cache John W. Eaton <jwe@octave.org> parents: 16230 diff changeset	3300
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3301 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	3302
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3303 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	3304 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3305
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3306 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3307 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	3308 {
16257 db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3309 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	3310
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3311 push_token (tok_val);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3312
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3313 return count_token_internal (tok);
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3314 }
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3315
db7f07b22b9b 1/10 commits reworking the lexer John W. Eaton <jwe@octave.org> parents: 16255 diff changeset	3316 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3317 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	3318 {
16229 7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3319 if (tok != '\n')
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3320 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3321 Vtoken_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3322 token_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3323 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3324
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3325 return show_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3326 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3327
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3328 int
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3329 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	3330 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3331 if (Vdisplay_tokens)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3332 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3333
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3334 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3335 {
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3336 std::cerr << "R: ";
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3337 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3338 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3339 }
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3340
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3341 return tok;
7b7b1e4968e8 use functions instead of token return macros in lexer John W. Eaton <jwe@octave.org> parents: 16228 diff changeset	3342 }
16293 57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3343
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3344 int
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3345 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	3346 {
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3347 int status = 0;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3348
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3349 if (input_buf.empty ())
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3350 {
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3351 bool eof = false;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3352 current_input_line = input_reader.get_input (eof);
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3353 input_buf.fill (current_input_line, eof);
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3354 }
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3355
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3356 if (! input_buf.empty ())
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3357 status = input_buf.copy_chunk (buf, max_size);
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3358 else
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3359 {
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3360 status = YY_NULL;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3361
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3362 if (! input_buf.at_eof ())
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3363 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	3364 }
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3365
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3366 return status;
57e87ddfee14 create base class for lexer John W. Eaton <jwe@octave.org> parents: 16292 diff changeset	3367 }
16294 0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3368
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3369 int
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3370 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	3371 {
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3372 int status = 0;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3373
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3374 if (input_buf.empty () && ! input_buf.at_eof ())
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3375 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	3376
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3377 if (! input_buf.empty ())
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3378 status = input_buf.copy_chunk (buf, max_size);
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3379 else
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3380 {
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3381 status = YY_NULL;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3382
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3383 if (! input_buf.at_eof ())
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3384 fatal_error ("octave_base_lexer::fill_flex_buffer failed");
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3385 }
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3386
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3387 return status;
0925d1f6875e push parser/lexer interface John W. Eaton <jwe@octave.org> parents: 16293 diff changeset	3388 }
18223 615fdd2238c1 improve compatibility of command syntax parsing (bug #41032) Michael C. Grant <mcg@cvxr.com> parents: 18138 diff changeset	3389

Mercurial > octave-nkf

annotate libinterp/parse-tree/lex.ll @ 18437:888cd8f62c67 gui-release