octave-nkf: src/lex.ll annotate

annotate src/lex.ll @ 11464:21b5284fa78d

avoid error when parsing nested functions

author	John W. Eaton <jwe@octave.org>
date	Sun, 09 Jan 2011 14:33:55 -0500
parents	0d9640d755b1
children	1f64a7b73e98

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
7017 a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe] jwe parents: 7016 diff changeset	3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
8920 eb63fbe60fab update copyright notices John W. Eaton <jwe@octave.org> parents: 8881 diff changeset	4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
eb63fbe60fab update copyright notices John W. Eaton <jwe@octave.org> parents: 8881 diff changeset	5 John W. Eaton
1 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 This file is part of Octave.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	8
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	9 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	10 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	11 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	12 option) any later version.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	13
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	14 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	15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	16 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	17 for more details.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	18
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	19 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	20 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	21 <http://www.gnu.org/licenses/>.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	22
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	23 */
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	24
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	25 %option prefix = "octave_"
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	26
10019 7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	27 %top {
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	28 #ifdef HAVE_CONFIG_H
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	29 #include <config.h>
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	30 #endif
10411 479cc8a0a846 use gnulib namespace John W. Eaton <jwe@octave.org> parents: 10315 diff changeset	31
10019 7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	32 }
7ad32bf759c3 lex.cc: Use %top block to include config.h John W. Eaton <jwe@octave.org> parents: 9794 diff changeset	33
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	34 %s COMMAND_START
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	35 %s MATRIX_START
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	36
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	37 %x SCRIPT_FILE_BEGIN
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	38 %x FUNCTION_FILE_BEGIN
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	39
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	40 %{
240 a99f28f5e351 [project @ 1993-11-30 20:24:36 by jwe] jwe parents: 216 diff changeset	41
1341 e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	42 #include <cctype>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	43 #include <cstring>
e4e4131b1648 [project @ 1995-09-04 00:13:33 by jwe] jwe parents: 1315 diff changeset	44
8950 d865363208d6 include <iosfwd> instead of <iostream> in header files John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	45 #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	46 #include <set>
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	47 #include <sstream>
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	48 #include <string>
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	49 #include <stack>
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	50
4093 5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	51 #include <sys/types.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	52 #include <unistd.h>
5a82e874999b [project @ 2002-10-08 23:48:45 by jwe] jwe parents: 4064 diff changeset	53
2926 66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe] jwe parents: 2900 diff changeset	54 #include "cmd-edit.h"
4153 6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe] jwe parents: 4131 diff changeset	55 #include "quit.h"
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	56 #include "lo-mappers.h"
2926 66ef74ee5d9f [project @ 1997-05-05 03:20:52 by jwe] jwe parents: 2900 diff changeset	57
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	58 // These would be alphabetical, but y.tab.h must be included before
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	59 // oct-gperf.h and y.tab.h must be included after token.h and the tree
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	60 // class declarations. We can't include y.tab.h in oct-gperf.h
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	61 // 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	62 // times.
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	63
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	64 #include "Cell.h"
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	65 #include "comment-list.h"
2181 138b3c98dc85 [project @ 1996-05-13 18:02:31 by jwe] jwe parents: 2167 diff changeset	66 #include "defun.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	67 #include "error.h"
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	68 #include "gripes.h"
1351 8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	69 #include "input.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	70 #include "lex.h"
2891 1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	71 #include "ov.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	72 #include "parse.h"
2987 ae20b3f37f5e [project @ 1997-05-16 07:05:15 by jwe] jwe parents: 2982 diff changeset	73 #include "pt-all.h"
2891 1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	74 #include "symtab.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	75 #include "token.h"
1a30f46e1870 [project @ 1997-04-28 01:49:00 by jwe] jwe parents: 2877 diff changeset	76 #include "toplev.h"
1355 94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	77 #include "utils.h"
94697d007075 [project @ 1995-09-05 20:04:15 by jwe] jwe parents: 1351 diff changeset	78 #include "variables.h"
9794 0d4613a736e9 convert build system to use automake and libtool John W. Eaton <jwe@octave.org> parents: 9476 diff changeset	79 #include <oct-parse.h>
2492 06595bc7f2d0 [project @ 1996-11-09 00:13:50 by jwe] jwe parents: 2375 diff changeset	80 #include <oct-gperf.h>
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	81
10426 4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	82 #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	83 // 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	84 // 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	85 // 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	86 #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	87 #define fwrite GNULIB_NAMESPACE::fwrite
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	88 #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	89 #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	90 #endif
4db7beace28e oct-parse.yy, lex.ll: use symbols via gnulib namespace John W. Eaton <jwe@octave.org> parents: 10411 diff changeset	91
2716 2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	92 #if ! (defined (FLEX_SCANNER) \
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	93 && 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	94 && 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	95 #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	96 #endif
2b5c27299cde [project @ 1997-02-22 08:40:55 by jwe] jwe parents: 2702 diff changeset	97
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	98 #define yylval octave_lval
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	99
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	100 // Arrange to get input via readline.
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	101
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	102 #ifdef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	103 #undef YY_INPUT
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	104 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	105 #define YY_INPUT(buf, result, max_size) \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	106 if ((result = octave_read (buf, max_size)) < 0) \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	107 YY_FATAL_ERROR ("octave_read () in flex scanner failed");
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	108
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	109 // 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	110 // The call to yy_fatal_error should never happen, but it avoids a
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	111 // `static function defined but not used' warning from gcc.
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	112
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	113 #ifdef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	114 #undef YY_FATAL_ERROR
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	115 #endif
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	116 #define YY_FATAL_ERROR(msg) \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	117 do \
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 error (msg); \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	120 OCTAVE_QUIT; \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	121 yy_fatal_error (msg); \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	122 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	123 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	124
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	125 #define DISPLAY_TOK_AND_RETURN(tok) \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	126 do \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	127 { \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	128 int tok_val = tok; \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	129 if (Vdisplay_tokens) \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	130 display_token (tok_val); \
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	131 if (lexer_debug_flag) \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	132 { \
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	133 std::cerr << "R: "; \
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	134 display_token (tok_val); \
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	135 std::cerr << std::endl; \
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	136 } \
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	137 return tok_val; \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	138 } \
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	139 while (0)
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	140
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	141 #define COUNT_TOK_AND_RETURN(tok) \
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	142 do \
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	143 { \
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	144 Vtoken_count++; \
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	145 DISPLAY_TOK_AND_RETURN (tok); \
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	146 } \
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	147 while (0)
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	148
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	149 #define TOK_RETURN(tok) \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	150 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	151 { \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	152 current_input_column += yyleng; \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	153 lexer_flags.quote_is_transpose = false; \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	154 lexer_flags.convert_spaces_to_comma = true; \
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	155 COUNT_TOK_AND_RETURN (tok); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	156 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	157 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	158
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	159 #define TOK_PUSH_AND_RETURN(name, tok) \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	160 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	161 { \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	162 yylval.tok_val = new token (name, input_line_number, \
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	163 current_input_column); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	164 token_stack.push (yylval.tok_val); \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	165 TOK_RETURN (tok); \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	166 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	167 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	168
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	169 #define BIN_OP_RETURN(tok, convert, bos) \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	170 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	171 { \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	172 yylval.tok_val = new token (input_line_number, current_input_column); \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	173 token_stack.push (yylval.tok_val); \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	174 current_input_column += yyleng; \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	175 lexer_flags.quote_is_transpose = false; \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	176 lexer_flags.convert_spaces_to_comma = convert; \
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	177 lexer_flags.looking_for_object_index = false; \
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	178 lexer_flags.at_beginning_of_statement = bos; \
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	179 COUNT_TOK_AND_RETURN (tok); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	180 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	181 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	182
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	183 #define XBIN_OP_RETURN(tok, convert, bos) \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	184 do \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	185 { \
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	186 gripe_matlab_incompatible_operator (yytext); \
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	187 BIN_OP_RETURN (tok, convert, bos); \
4753 9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	188 } \
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	189 while (0)
9f0ce1536368 [project @ 2004-02-13 17:55:24 by jwe] jwe parents: 4678 diff changeset	190
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	191 #define LEXER_DEBUG(pattern) \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	192 do \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	193 { \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	194 if (lexer_debug_flag) \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	195 lexer_debug (pattern, yytext); \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	196 } \
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	197 while (0)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	198
3883 69b6bd271277 [project @ 2002-04-02 21:05:10 by jwe] jwe parents: 3880 diff changeset	199 // TRUE means that we have encountered EOF on the input stream.
69b6bd271277 [project @ 2002-04-02 21:05:10 by jwe] jwe parents: 3880 diff changeset	200 bool parser_end_of_input = false;
69b6bd271277 [project @ 2002-04-02 21:05:10 by jwe] jwe parents: 3880 diff changeset	201
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	202 // Flags that need to be shared between the lexer and parser.
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	203 lexical_feedback lexer_flags;
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	204
1351 8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	205 // Stack to hold tokens so that we can delete them when the parser is
8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	206 // reset and avoid growing forever just because we are stashing some
8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	207 // information. This has to appear before lex.h is included, because
8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	208 // one of the macros defined there uses token_stack.
2614 ae47b0911863 [project @ 1997-01-21 03:57:46 by jwe] jwe parents: 2542 diff changeset	209 //
5775 ace8d8d26933 [project @ 2006-04-24 19:13:06 by jwe] jwe parents: 5765 diff changeset	210 // FIXME -- this should really be static, but that causes
2614 ae47b0911863 [project @ 1997-01-21 03:57:46 by jwe] jwe parents: 2542 diff changeset	211 // problems on some systems.
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	212 std::stack <token*> token_stack;
1351 8256c4c57419 [project @ 1995-09-05 08:02:08 by jwe] jwe parents: 1341 diff changeset	213
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	214 // Did eat_whitespace() eat a space or tab, or a newline, or both?
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	215
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	216 typedef int yum_yum;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	217
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	218 const yum_yum ATE_NOTHING = 0;
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	219 const yum_yum ATE_SPACE_OR_TAB = 1;
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	220 const yum_yum ATE_NEWLINE = 2;
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	221
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	222 // Is the closest nesting level a square bracket, squiggly brace or a paren?
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	223
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	224 class bracket_brace_paren_nesting_level
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	225 {
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	226 public:
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	227
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	228 bracket_brace_paren_nesting_level (void) : context () { }
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	229
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	230 ~bracket_brace_paren_nesting_level (void) { }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	231
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	232 void bracket (void) { context.push (BRACKET); }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	233 bool is_bracket (void)
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	234 { return ! context.empty () && context.top () == BRACKET; }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	235
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	236 void brace (void) { context.push (BRACE); }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	237 bool is_brace (void)
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	238 { return ! context.empty () && context.top () == BRACE; }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	239
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	240 void paren (void) { context.push (PAREN); }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	241 bool is_paren (void)
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	242 { return ! context.empty () && context.top () == PAREN; }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	243
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	244 bool is_bracket_or_brace (void)
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	245 { return (! context.empty ()
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	246 && (context.top () == BRACKET \|\| context.top () == BRACE)); }
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	247
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	248 bool none (void) { return context.empty (); }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	249
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	250 void remove (void) { if (! context.empty ()) context.pop (); }
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	251
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	252 void clear (void) { while (! context.empty ()) context.pop (); }
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	253
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	254 private:
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	255
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	256 std::stack<int> context;
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	257
5225 6434e63553f0 [project @ 2005-03-17 17:53:01 by jwe] jwe parents: 5224 diff changeset	258 static const int BRACKET;
6434e63553f0 [project @ 2005-03-17 17:53:01 by jwe] jwe parents: 5224 diff changeset	259 static const int BRACE;
6434e63553f0 [project @ 2005-03-17 17:53:01 by jwe] jwe parents: 5224 diff changeset	260 static const int PAREN;
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	261
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	262 bracket_brace_paren_nesting_level (const bracket_brace_paren_nesting_level&);
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	263
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	264 bracket_brace_paren_nesting_level&
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	265 operator = (const bracket_brace_paren_nesting_level&);
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	266 };
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	267
5225 6434e63553f0 [project @ 2005-03-17 17:53:01 by jwe] jwe parents: 5224 diff changeset	268 const int bracket_brace_paren_nesting_level::BRACKET = 1;
6434e63553f0 [project @ 2005-03-17 17:53:01 by jwe] jwe parents: 5224 diff changeset	269 const int bracket_brace_paren_nesting_level::BRACE = 2;
6434e63553f0 [project @ 2005-03-17 17:53:01 by jwe] jwe parents: 5224 diff changeset	270 const int bracket_brace_paren_nesting_level::PAREN = 3;
6434e63553f0 [project @ 2005-03-17 17:53:01 by jwe] jwe parents: 5224 diff changeset	271
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	272 static bracket_brace_paren_nesting_level nesting_level;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	273
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	274 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	275
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	276 static unsigned int Vtoken_count = 0;
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	277
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	278 // The start state that was in effect when the beginning of a block
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	279 // comment was noticed.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	280 static int block_comment_nesting_level = 0;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	281
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	282 // Internal variable for lexer debugging state.
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	283 static bool lexer_debug_flag = false;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	284
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	285 // Forward declarations for functions defined at the bottom of this
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	286 // file.
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	287
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	288 static int text_yyinput (void);
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	289 static void xunput (char c, char *buf);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	290 static void fixup_column_count (char *s);
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	291 static void do_comma_insert_check (void);
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	292 static int is_keyword_token (const std::string& s);
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	293 static int process_comment (bool start_in_block, bool& eof);
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	294 static bool match_any (char c, const char *s);
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	295 static bool next_token_is_sep_op (void);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	296 static bool next_token_is_bin_op (bool spc_prev);
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	297 static bool next_token_is_postfix_unary_op (bool spc_prev);
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	298 static std::string strip_trailing_whitespace (char *s);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	299 static void handle_number (void);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	300 static int handle_string (char delim);
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	301 static int handle_close_bracket (bool spc_gobbled, int bracket_type);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	302 static int handle_superclass_identifier (void);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	303 static int handle_meta_identifier (void);
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	304 static int handle_identifier (void);
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	305 static bool have_continuation (bool trailing_comments_ok = true);
ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	306 static bool have_ellipsis_continuation (bool trailing_comments_ok = true);
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	307 static void scan_for_comments (const char *);
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	308 static yum_yum eat_whitespace (void);
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	309 static yum_yum eat_continuation (void);
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	310 static void maybe_warn_separator_insert (char sep);
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	311 static void gripe_single_quote_string (void);
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	312 static void gripe_matlab_incompatible (const std::string& msg);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	313 static void maybe_gripe_matlab_incompatible_comment (char c);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	314 static void gripe_matlab_incompatible_continuation (void);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	315 static void gripe_matlab_incompatible_operator (const std::string& op);
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	316 static void display_token (int tok);
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	317 static void lexer_debug (const char pattern, const char text);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	318
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	319 %}
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	320
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	321 D [0-9]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	322 S [ \t]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	323 NL ((\n)\|(\r)\|(\r\n))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	324 SNL ({S}\|{NL})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	325 EL (\.\.\.)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	326 BS (\\)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	327 CONT ({EL}\|{BS})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	328 Im [iIjJ]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	329 CCHAR [#%]
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	330 COMMENT ({CCHAR}.*{NL})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	331 SNLCMT ({SNL}\|{COMMENT})
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	332 NOT ((\~)\|(\!))
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	333 POW ((\\)\|(\^))
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	334 EPOW (\.{POW})
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	335 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	336 EXPON ([DdEe][+-]?{D}+)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	337 NUMBER (({D}+\.?{D}*{EXPON}?)\|(\.{D}+{EXPON}?)\|(0[xX][0-9a-fA-F]+))
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	338 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	339
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	340 %{
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	341 // 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	342 // the parser go down a special path.
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	343 %}
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	344
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	345 <SCRIPT_FILE_BEGIN>. {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	346 LEXER_DEBUG ("<SCRIPT_FILE_BEGIN>.");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	347
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	348 BEGIN (INITIAL);
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	349 xunput (yytext[0], yytext);
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	350 COUNT_TOK_AND_RETURN (SCRIPT_FILE);
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	351 }
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	352
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	353 <FUNCTION_FILE_BEGIN>. {
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	354 LEXER_DEBUG ("<FUNCTION_FILE_BEGIN>.");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	355
4323 0990c9b77109 [project @ 2003-02-14 07:36:26 by jwe] jwe parents: 4318 diff changeset	356 BEGIN (INITIAL);
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	357 xunput (yytext[0], yytext);
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	358 COUNT_TOK_AND_RETURN (FUNCTION_FILE);
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	359 }
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	360
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	361 %{
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	362 // Help and other command-style functions.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	363 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	364
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	365 <COMMAND_START>{NL} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	366 LEXER_DEBUG ("<COMMAND_START>{NL}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	367
4323 0990c9b77109 [project @ 2003-02-14 07:36:26 by jwe] jwe parents: 4318 diff changeset	368 BEGIN (INITIAL);
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	369 input_line_number++;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	370 current_input_column = 1;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	371
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	372 lexer_flags.quote_is_transpose = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	373 lexer_flags.convert_spaces_to_comma = true;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	374 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	375 lexer_flags.at_beginning_of_statement = true;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	376
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	377 COUNT_TOK_AND_RETURN ('\n');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	378 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	379
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	380 <COMMAND_START>[\;\,] {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	381 LEXER_DEBUG ("<COMMAND_START>[\\;\\,]");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	382
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	383 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	384 lexer_flags.at_beginning_of_statement = true;
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	385
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	386 BEGIN (INITIAL);
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	387
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	388 if (strcmp (yytext, ",") == 0)
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	389 TOK_RETURN (',');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	390 else
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	391 TOK_RETURN (';');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	392 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	393
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	394 <COMMAND_START>[\"\'] {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	395 LEXER_DEBUG ("<COMMAND_START>[\\\"\\']");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	396
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	397 lexer_flags.at_beginning_of_statement = false;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	398
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	399 current_input_column++;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	400 int tok = handle_string (yytext[0]);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	401
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	402 COUNT_TOK_AND_RETURN (tok);
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
4923 b11223097ad4 [project @ 2004-08-02 16:33:11 by jwe] jwe parents: 4910 diff changeset	405 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	406 LEXER_DEBUG ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	407
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	408 std::string tok = strip_trailing_whitespace (yytext);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	409
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	410 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	411 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	412
5279 bd32f770c09a [project @ 2005-04-12 21:55:31 by jwe] jwe parents: 5225 diff changeset	413 TOK_PUSH_AND_RETURN (tok, SQ_STRING);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	414 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	415
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	416 %{
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	417 // For this and the next two rules, we're looking at ']', and we
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	418 // need to know if the next token is `=' or `=='.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	419 //
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	420 // 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	421 // 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	422 // operator.
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	423 //
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	424 // 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	425 // after seeing a ']' character...
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	426
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	427 // FIXME -- we need to handle block comments here.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	428 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	429
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	430 <MATRIX_START>{SNLCMT}\]{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	431 LEXER_DEBUG ("<MATRIX_START>{SNLCMT}\\]{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	432
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	433 scan_for_comments (yytext);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	434 fixup_column_count (yytext);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	435
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	436 lexer_flags.looking_at_object_index.pop_front ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	437
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	438 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	439 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	440
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	441 int c = yytext[yyleng-1];
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	442 int cont_is_spc = eat_continuation ();
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	443 bool spc_gobbled = (cont_is_spc \|\| c == ' ' \|\| c == '\t');
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	444 int tok_to_return = handle_close_bracket (spc_gobbled, ']');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	445
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	446 if (spc_gobbled)
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	447 xunput (' ', yytext);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	448
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	449 COUNT_TOK_AND_RETURN (tok_to_return);
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	450 }
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	451
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	452 %{
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	453 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	454 %}
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	455
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	456 <MATRIX_START>{SNLCMT}\}{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	457 LEXER_DEBUG ("<MATRIX_START>{SNLCMT}\\}{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	458
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	459 scan_for_comments (yytext);
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	460 fixup_column_count (yytext);
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	461
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	462 lexer_flags.looking_at_object_index.pop_front ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	463
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	464 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	465 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	466
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	467 int c = yytext[yyleng-1];
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	468 int cont_is_spc = eat_continuation ();
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	469 bool spc_gobbled = (cont_is_spc \|\| c == ' ' \|\| c == '\t');
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	470 int tok_to_return = handle_close_bracket (spc_gobbled, '}');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	471
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	472 if (spc_gobbled)
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	473 xunput (' ', yytext);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	474
5345 2781568bf951 [project @ 2005-05-10 05:31:12 by jwe] jwe parents: 5307 diff changeset	475 COUNT_TOK_AND_RETURN (tok_to_return);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	476 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	477
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	478 %{
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	479 // Commas are element separators in matrix constants. If we don't
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	480 // check for continuations here we can end up inserting too many
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	481 // commas.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	482 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	483
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	484 <MATRIX_START>{S}\,{S} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	485 LEXER_DEBUG ("<MATRIX_START>{S}\\,{S}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	486
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	487 current_input_column += yyleng;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	488
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	489 int tmp = eat_continuation ();
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	490
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	491 lexer_flags.quote_is_transpose = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	492 lexer_flags.convert_spaces_to_comma = true;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	493 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	494 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	495
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	496 if (! lexer_flags.looking_at_object_index.front ())
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	497 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	498 if ((tmp & ATE_NEWLINE) == ATE_NEWLINE)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	499 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	500 maybe_warn_separator_insert (';');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	501
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	502 xunput (';', yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	503 }
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	504 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	505
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	506 COUNT_TOK_AND_RETURN (',');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	507 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	508
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	509 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	510 // In some cases, spaces in matrix constants can turn into commas.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	511 // If commas are required, spaces are not important in matrix
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	512 // constants so we just eat them. If we don't check for continuations
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	513 // here we can end up inserting too many commas.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	514 %}
430 8464d5778a09 [project @ 1994-05-25 08:33:54 by jwe] jwe parents: 428 diff changeset	515
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	516 <MATRIX_START>{S}+ {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	517 LEXER_DEBUG ("<MATRIX_START>{S}+");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	518
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	519 current_input_column += yyleng;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	520
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	521 lexer_flags.at_beginning_of_statement = false;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	522
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	523 int tmp = eat_continuation ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	524
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	525 if (! lexer_flags.looking_at_object_index.front ())
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	526 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	527 bool bin_op = next_token_is_bin_op (true);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	528 bool postfix_un_op = next_token_is_postfix_unary_op (true);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	529 bool sep_op = next_token_is_sep_op ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	530
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	531 if (! (postfix_un_op \|\| bin_op \|\| sep_op)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	532 && nesting_level.is_bracket_or_brace ()
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	533 && lexer_flags.convert_spaces_to_comma)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	534 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	535 if ((tmp & ATE_NEWLINE) == ATE_NEWLINE)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	536 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	537 maybe_warn_separator_insert (';');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	538
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	539 xunput (';', yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	540 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	541
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	542 lexer_flags.quote_is_transpose = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	543 lexer_flags.convert_spaces_to_comma = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	544
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	545 maybe_warn_separator_insert (',');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	546
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	547 COUNT_TOK_AND_RETURN (',');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	548 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	549 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	550 }
430 8464d5778a09 [project @ 1994-05-25 08:33:54 by jwe] jwe parents: 428 diff changeset	551
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	552 %{
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	553 // Semicolons are handled as row seprators in matrix constants. If we
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	554 // don't eat whitespace here we can end up inserting too many
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	555 // semicolons.
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	556
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	557 // FIXME -- we need to handle block comments here.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	558 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	559
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	560 <MATRIX_START>{SNLCMT};{SNLCMT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	561 LEXER_DEBUG ("<MATRIX_START>{SNLCMT};{SNLCMT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	562
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	563 scan_for_comments (yytext);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	564 fixup_column_count (yytext);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	565 eat_whitespace ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	566
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	567 lexer_flags.quote_is_transpose = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	568 lexer_flags.convert_spaces_to_comma = true;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	569 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	570 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	571
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	572 COUNT_TOK_AND_RETURN (';');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	573 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	574
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	575 %{
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	576 // In some cases, new lines can also become row separators. If we
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	577 // don't eat whitespace here we can end up inserting too many
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	578 // semicolons.
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	579
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	580 // FIXME -- we need to handle block comments here.
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	581 %}
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	582
4208 e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	583 <MATRIX_START>{S}{COMMENT}{SNLCMT} \|
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe] jwe parents: 4198 diff changeset	584 <MATRIX_START>{S}{NL}{SNLCMT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	585 LEXER_DEBUG ("<MATRIX_START>{S}{COMMENT}{SNLCMT}\|<MATRIX_START>{S}{NL}{SNLCMT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	586
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	587 scan_for_comments (yytext);
1082 d1a1608f1028 [project @ 1995-01-27 22:26:33 by jwe] jwe parents: 1072 diff changeset	588 fixup_column_count (yytext);
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	589 eat_whitespace ();
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	590
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	591 lexer_flags.quote_is_transpose = false;
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	592 lexer_flags.convert_spaces_to_comma = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	593 lexer_flags.at_beginning_of_statement = false;
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	594
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	595 if (nesting_level.none ())
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	596 return LEXICAL_ERROR;
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	597
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	598 if (! lexer_flags.looking_at_object_index.front ()
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	599 && nesting_level.is_bracket_or_brace ())
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	600 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	601 maybe_warn_separator_insert (';');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	602
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	603 COUNT_TOK_AND_RETURN (';');
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	604 }
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	605 }
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	606
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	607 \[{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	608 LEXER_DEBUG ("\\[{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	609
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	610 nesting_level.bracket ();
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	611
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	612 lexer_flags.looking_at_object_index.push_front (false);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	613
1082 d1a1608f1028 [project @ 1995-01-27 22:26:33 by jwe] jwe parents: 1072 diff changeset	614 current_input_column += yyleng;
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	615 lexer_flags.quote_is_transpose = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	616 lexer_flags.convert_spaces_to_comma = true;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	617 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	618 lexer_flags.at_beginning_of_statement = false;
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	619
11464 21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	620 if (lexer_flags.defining_func
21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	621 && ! lexer_flags.parsed_function_name.top ())
5615 d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	622 lexer_flags.looking_at_return_list = true;
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	623 else
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	624 lexer_flags.looking_at_matrix_or_assign_lhs = true;
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	625
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	626 promptflag--;
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	627 eat_whitespace ();
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	628
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	629 lexer_flags.bracketflag++;
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	630 BEGIN (MATRIX_START);
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	631 COUNT_TOK_AND_RETURN ('[');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	632 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	633
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	634 \] {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	635 LEXER_DEBUG ("\\]");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	636
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	637 nesting_level.remove ();
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	638
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	639 lexer_flags.looking_at_object_index.pop_front ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	640
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	641 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	642 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	643
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	644 TOK_RETURN (']');
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	645 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	646
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	647 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	648 // Imaginary numbers.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	649 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	650
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	651 {NUMBER}{Im} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	652 LEXER_DEBUG ("{NUMBER}{Im}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	653
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	654 handle_number ();
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	655 COUNT_TOK_AND_RETURN (IMAG_NUM);
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	656 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	657
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	658 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	659 // Real numbers. Don't grab the `.' part of a dot operator as part of
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	660 // the constant.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	661 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	662
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	663 {D}+/\.[\*/\\^\'] \|
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	664 {NUMBER} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	665 LEXER_DEBUG ("{D}+/\\.[\\*/\\^\\']\|{NUMBER}");
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	666 handle_number ();
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	667 COUNT_TOK_AND_RETURN (NUM);
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	668 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	669
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	670 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	671 // 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	672 // the <MATRIX_START> start state code above.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	673 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	674
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	675 {S}* {
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	676 current_input_column += yyleng;
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	677 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	678
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	679 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	680 // Continuation lines. Allow comments after continuations.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	681 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	682
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	683 {CONT}{S}*{NL} \|
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	684 {CONT}{S}*{COMMENT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	685 LEXER_DEBUG ("{CONT}{S}{NL}\|{CONT}{S}{COMMENT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	686
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	687 if (yytext[0] == '\\')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	688 gripe_matlab_incompatible_continuation ();
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	689 scan_for_comments (yytext);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	690 promptflag--;
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	691 input_line_number++;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	692 current_input_column = 1;
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	693 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	694
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	695 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	696 // End of file.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	697 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	698
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	699 <<EOF>> {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	700 LEXER_DEBUG ("<<EOF>>");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	701
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	702 if (block_comment_nesting_level != 0)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	703 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	704 warning ("block comment open at end of input");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	705
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	706 if ((reading_fcn_file \|\| reading_script_file \|\| reading_classdef_file)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	707 && ! curr_fcn_file_name.empty ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	708 warning ("near line %d of file `%s.m'",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	709 input_line_number, curr_fcn_file_name.c_str ());
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	710 }
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	711
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	712 TOK_RETURN (END_OF_INPUT);
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	713 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	714
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	715 %{
970 9382316a8a01 [project @ 1994-12-12 06:03:34 by jwe] jwe parents: 969 diff changeset	716 // Identifiers. Truncate the token at the first space or tab but
9382316a8a01 [project @ 1994-12-12 06:03:34 by jwe] jwe parents: 969 diff changeset	717 // don't write directly on yytext.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	718 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	719
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	720 {IDENT}{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	721 LEXER_DEBUG ("{IDENT}{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	722
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	723 int id_tok = handle_identifier ();
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	724
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	725 if (id_tok >= 0)
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	726 COUNT_TOK_AND_RETURN (id_tok);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	727 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	728
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	729 %{
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	730 // Superclass method identifiers.
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	731 %}
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	732
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	733 {IDENT}@{IDENT}{S}* \|
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	734 {IDENT}@{IDENT}.{IDENT}{S}* {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	735 LEXER_DEBUG ("{IDENT}@{IDENT}{S}\|{IDENT}@{IDENT}.{IDENT}{S}");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	736
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	737 int id_tok = handle_superclass_identifier ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	738
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	739 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	740 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	741 lexer_flags.looking_for_object_index = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	742
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	743 COUNT_TOK_AND_RETURN (SUPERCLASSREF);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	744 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	745 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	746
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	747 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	748 // Metaclass query
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	749 %}
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	750
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	751 \?{IDENT}{S}* \|
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	752 \?{IDENT}.{IDENT}{S}* {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	753 LEXER_DEBUG ("\?{IDENT}{S}* \| \?{IDENT}.{IDENT}{S}*");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	754
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	755 int id_tok = handle_meta_identifier ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	756
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	757 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	758 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	759 lexer_flags.looking_for_object_index = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	760
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	761 COUNT_TOK_AND_RETURN (METAQUERY);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	762 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	763 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	764
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	765 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	766 // Function handles and superclass references
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	767 %}
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	768
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	769 "@" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	770 LEXER_DEBUG ("@");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	771
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	772 current_input_column++;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	773
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	774 lexer_flags.quote_is_transpose = false;
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	775 lexer_flags.convert_spaces_to_comma = false;
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	776 lexer_flags.looking_at_function_handle++;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	777 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	778 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	779
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	780 COUNT_TOK_AND_RETURN ('@');
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	781
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	782 }
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	783
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	784 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	785 // 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	786 // 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	787 // 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	788 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	789
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	790 {NL} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	791 LEXER_DEBUG ("{NL}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	792
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	793 input_line_number++;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	794 current_input_column = 1;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	795
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	796 lexer_flags.quote_is_transpose = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	797 lexer_flags.convert_spaces_to_comma = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	798
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	799 if (nesting_level.none ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	800 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	801 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	802 COUNT_TOK_AND_RETURN ('\n');
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	803 }
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	804 else if (nesting_level.is_paren ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	805 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	806 lexer_flags.at_beginning_of_statement = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	807 gripe_matlab_incompatible ("bare newline inside parentheses");
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	808 }
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	809 else if (nesting_level.is_bracket_or_brace ())
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	810 return LEXICAL_ERROR;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	811 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	812
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	813 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	814 // Single quote can either be the beginning of a string or a transpose
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	815 // operator.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	816 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	817
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	818 "'" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	819 LEXER_DEBUG ("'");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	820
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	821 current_input_column++;
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	822 lexer_flags.convert_spaces_to_comma = true;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	823
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	824 if (lexer_flags.quote_is_transpose)
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	825 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	826 do_comma_insert_check ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	827 COUNT_TOK_AND_RETURN (QUOTE);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	828 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	829 else
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	830 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	831 int tok = handle_string ('\'');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	832 COUNT_TOK_AND_RETURN (tok);
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	833 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	834 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	835
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	836 %{
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	837 // Double quotes always begin strings.
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	838 %}
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	839
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	840 \" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	841 LEXER_DEBUG ("\"");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	842
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	843 current_input_column++;
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	844 int tok = handle_string ('"');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	845
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	846 COUNT_TOK_AND_RETURN (tok);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	847 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	848
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	849 %{
8536 de1b944d5306 lex.l: finish previous change John W. Eaton <jwe@octave.org> parents: 8535 diff changeset	850 // Gobble comments.
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	851 %}
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	852
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	853 {CCHAR} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	854 LEXER_DEBUG ("{CCHAR}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	855
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	856 lexer_flags.looking_for_object_index = false;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	857
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	858 xunput (yytext[0], yytext);
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	859
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	860 bool eof = false;
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	861 int tok = process_comment (false, eof);
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	862
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	863 if (eof)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	864 TOK_RETURN (END_OF_INPUT);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	865 else if (tok > 0)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	866 COUNT_TOK_AND_RETURN (tok);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	867 }
440 e27d10f2e573 [project @ 1994-05-30 03:33:37 by jwe] jwe parents: 430 diff changeset	868
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	869 %{
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	870 // Block comments.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	871 %}
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	872
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	873 ^{S}{CCHAR}\{{S}{NL} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	874 LEXER_DEBUG ("^{S}{CCHAR}\\{{S}{NL}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	875
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	876 lexer_flags.looking_for_object_index = false;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	877
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	878 input_line_number++;
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	879 current_input_column = 1;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	880 block_comment_nesting_level++;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	881 promptflag--;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	882
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	883 bool eof = false;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	884 process_comment (true, eof);
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	885 }
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	886
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	887 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	888 // Other operators.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	889 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	890
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	891 ":" { LEXER_DEBUG (":"); BIN_OP_RETURN (':', false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	892
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	893 ".+" { LEXER_DEBUG (".+"); XBIN_OP_RETURN (EPLUS, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	894 ".-" { LEXER_DEBUG (".-"); XBIN_OP_RETURN (EMINUS, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	895 "." { LEXER_DEBUG ("."); BIN_OP_RETURN (EMUL, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	896 "./" { LEXER_DEBUG ("./"); BIN_OP_RETURN (EDIV, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	897 ".\\" { LEXER_DEBUG (".\\"); BIN_OP_RETURN (ELEFTDIV, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	898 ".^" { LEXER_DEBUG (".^"); BIN_OP_RETURN (EPOW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	899 "." { LEXER_DEBUG ("."); XBIN_OP_RETURN (EPOW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	900 ".'" { LEXER_DEBUG (".'"); do_comma_insert_check (); BIN_OP_RETURN (TRANSPOSE, true, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	901 "++" { LEXER_DEBUG ("++"); do_comma_insert_check (); XBIN_OP_RETURN (PLUS_PLUS, true, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	902 "--" { LEXER_DEBUG ("--"); do_comma_insert_check (); XBIN_OP_RETURN (MINUS_MINUS, true, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	903 "<=" { LEXER_DEBUG ("<="); BIN_OP_RETURN (EXPR_LE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	904 "==" { LEXER_DEBUG ("=="); BIN_OP_RETURN (EXPR_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	905 "~=" { LEXER_DEBUG ("~="); BIN_OP_RETURN (EXPR_NE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	906 "!=" { LEXER_DEBUG ("!="); XBIN_OP_RETURN (EXPR_NE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	907 ">=" { LEXER_DEBUG (">="); BIN_OP_RETURN (EXPR_GE, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	908 "&" { LEXER_DEBUG ("&"); BIN_OP_RETURN (EXPR_AND, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	909 "\|" { LEXER_DEBUG ("\|"); BIN_OP_RETURN (EXPR_OR, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	910 "<" { LEXER_DEBUG ("<"); BIN_OP_RETURN (EXPR_LT, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	911 ">" { LEXER_DEBUG (">"); BIN_OP_RETURN (EXPR_GT, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	912 "+" { LEXER_DEBUG ("+"); BIN_OP_RETURN ('+', false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	913 "-" { LEXER_DEBUG ("-"); BIN_OP_RETURN ('-', false, false); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	914 "" { LEXER_DEBUG (""); BIN_OP_RETURN ('*', false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	915 "/" { LEXER_DEBUG ("/"); BIN_OP_RETURN ('/', false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	916 "\\" { LEXER_DEBUG ("\\"); BIN_OP_RETURN (LEFTDIV, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	917 ";" { LEXER_DEBUG (";"); BIN_OP_RETURN (';', true, true); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	918 "," { LEXER_DEBUG (","); BIN_OP_RETURN (',', true, ! lexer_flags.looking_at_object_index.front ()); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	919 "^" { LEXER_DEBUG ("^"); BIN_OP_RETURN (POW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	920 "" { LEXER_DEBUG (""); XBIN_OP_RETURN (POW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	921 "=" { LEXER_DEBUG ("="); BIN_OP_RETURN ('=', true, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	922 "&&" { LEXER_DEBUG ("&&"); BIN_OP_RETURN (EXPR_AND_AND, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	923 "\|\|" { LEXER_DEBUG ("\|\|"); BIN_OP_RETURN (EXPR_OR_OR, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	924 "<<" { LEXER_DEBUG ("<<"); XBIN_OP_RETURN (LSHIFT, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	925 ">>" { LEXER_DEBUG (">>"); XBIN_OP_RETURN (RSHIFT, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	926
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	927 {NOT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	928 LEXER_DEBUG ("{NOT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	929
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	930 if (yytext[0] == '~')
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	931 BIN_OP_RETURN (EXPR_NOT, false, false);
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	932 else
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	933 XBIN_OP_RETURN (EXPR_NOT, false, false);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	934 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	935
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	936 "(" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	937 LEXER_DEBUG ("(");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	938
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	939 // If we are looking for an object index, then push TRUE for
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	940 // looking_at_object_index. Otherwise, just push whatever state
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	941 // is current (so that we can pop it off the stack when we find
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	942 // the matching close paren).
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	943
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	944 lexer_flags.looking_at_object_index.push_front
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	945 (lexer_flags.looking_for_object_index);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	946
4131 597fbc55ea40 [project @ 2002-10-29 17:12:53 by jwe] jwe parents: 4101 diff changeset	947 lexer_flags.looking_at_indirect_ref = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	948 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	949 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	950
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	951 nesting_level.paren ();
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	952 promptflag--;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	953
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	954 TOK_RETURN ('(');
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	955 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	956
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	957 ")" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	958 LEXER_DEBUG (")");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	959
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	960 nesting_level.remove ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	961 current_input_column++;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	962
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	963 lexer_flags.looking_at_object_index.pop_front ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	964
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	965 lexer_flags.quote_is_transpose = true;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	966 lexer_flags.convert_spaces_to_comma = nesting_level.is_bracket_or_brace ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	967 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	968 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	969
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	970 do_comma_insert_check ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	971
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	972 COUNT_TOK_AND_RETURN (')');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	973 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	974
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	975 "." {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	976 LEXER_DEBUG (".");
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	977
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	978 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	979 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	980
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	981 TOK_RETURN ('.');
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	982 }
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	983
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	984 "+=" { LEXER_DEBUG ("+="); XBIN_OP_RETURN (ADD_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	985 "-=" { LEXER_DEBUG ("-="); XBIN_OP_RETURN (SUB_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	986 "=" { LEXER_DEBUG ("="); XBIN_OP_RETURN (MUL_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	987 "/=" { LEXER_DEBUG ("/="); XBIN_OP_RETURN (DIV_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	988 "\\=" { LEXER_DEBUG ("\\="); XBIN_OP_RETURN (LEFTDIV_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	989 ".+=" { LEXER_DEBUG (".+="); XBIN_OP_RETURN (ADD_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	990 ".-=" { LEXER_DEBUG (".-="); XBIN_OP_RETURN (SUB_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	991 ".=" { LEXER_DEBUG (".="); XBIN_OP_RETURN (EMUL_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	992 "./=" { LEXER_DEBUG ("./="); XBIN_OP_RETURN (EDIV_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	993 ".\\=" { LEXER_DEBUG (".\\="); XBIN_OP_RETURN (ELEFTDIV_EQ, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	994 {POW}= { LEXER_DEBUG ("{POW}="); XBIN_OP_RETURN (POW_EQ, false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	995 {EPOW}= { LEXER_DEBUG ("{EPOW}="); XBIN_OP_RETURN (EPOW_EQ, false, false); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	996 "&=" { LEXER_DEBUG ("&="); XBIN_OP_RETURN (AND_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	997 "\|=" { LEXER_DEBUG ("\|="); XBIN_OP_RETURN (OR_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	998 "<<=" { LEXER_DEBUG ("<<="); XBIN_OP_RETURN (LSHIFT_EQ, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	999 ">>=" { LEXER_DEBUG (">>="); XBIN_OP_RETURN (RSHIFT_EQ, false, false); }
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	1000
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1001 \{{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1002 LEXER_DEBUG ("\\{{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1003
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1004 nesting_level.brace ();
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1005
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1006 lexer_flags.looking_at_object_index.push_front
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1007 (lexer_flags.looking_for_object_index);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1008
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1009 current_input_column += yyleng;
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1010 lexer_flags.quote_is_transpose = false;
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1011 lexer_flags.convert_spaces_to_comma = true;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1012 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1013 lexer_flags.at_beginning_of_statement = false;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1014
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1015 promptflag--;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1016 eat_whitespace ();
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1017
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	1018 lexer_flags.braceflag++;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1019 BEGIN (MATRIX_START);
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	1020 COUNT_TOK_AND_RETURN ('{');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1021 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1022
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1023 "}" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1024 LEXER_DEBUG ("}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1025
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1026 lexer_flags.looking_at_object_index.pop_front ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1027
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1028 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1029 lexer_flags.at_beginning_of_statement = false;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1030
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1031 nesting_level.remove ();
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1032
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1033 TOK_RETURN ('}');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1034 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1035
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1036 %{
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1037 // Unrecognized input is a lexical error.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1038 %}
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1039
2042 31f4f775b8c6 [project @ 1996-03-28 09:06:28 by jwe] jwe parents: 1994 diff changeset	1040 . {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1041 LEXER_DEBUG (".");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1042
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1043 xunput (yytext[0], yytext);
4248 eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1044
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1045 int c = text_yyinput ();
4248 eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1046
eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1047 if (c != EOF)
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1048 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1049 current_input_column++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1050
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1051 error ("invalid character `%s' (ASCII %d) near line %d, column %d",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1052 undo_string_escape (static_cast<char> (c)), c,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1053 input_line_number, current_input_column);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1054
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1055 return LEXICAL_ERROR;
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1056 }
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1057 else
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1058 TOK_RETURN (END_OF_INPUT);
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1059 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1060
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1061 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1062
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1063 // GAG.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1064 //
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1065 // If we're reading a matrix and the next character is '[', make sure
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1066 // that we insert a comma ahead of it.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1067
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	1068 void
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1069 do_comma_insert_check (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1070 {
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	1071 int spc_gobbled = eat_continuation ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	1072
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1073 int c = text_yyinput ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	1074
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1075 xunput (c, yytext);
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	1076
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	1077 if (spc_gobbled)
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1078 xunput (' ', yytext);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1079
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1080 lexer_flags.do_comma_insert = (! lexer_flags.looking_at_object_index.front ()
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1081 && lexer_flags.bracketflag && c == '[');
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1082 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1083
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1084 // Fix things up for errors or interrupts. The parser is never called
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1085 // recursively, so it is always safe to reinitialize its state before
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1086 // doing any parsing.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1087
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1088 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1089 reset_parser (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1090 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1091 // Start off on the right foot.
4323 0990c9b77109 [project @ 2003-02-14 07:36:26 by jwe] jwe parents: 4318 diff changeset	1092 BEGIN (INITIAL);
4318 115bffcecfd3 [project @ 2003-02-13 05:52:16 by jwe] jwe parents: 4264 diff changeset	1093
3883 69b6bd271277 [project @ 2002-04-02 21:05:10 by jwe] jwe parents: 3880 diff changeset	1094 parser_end_of_input = false;
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1095
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1096 while (! symtab_context.empty ())
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1097 symtab_context.pop ();
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1098
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1099 // We do want a prompt by default.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1100 promptflag = 1;
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1101
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1102 // We are not in a block comment.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1103 block_comment_nesting_level = 0;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1104
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1105 // Error may have occurred inside some brackets, braces, or parentheses.
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	1106 nesting_level.clear ();
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1107
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1108 // Clear out the stack of token info used to track line and column
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1109 // numbers.
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	1110 while (! token_stack.empty ())
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1111 {
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1112 delete token_stack.top ();
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1113 token_stack.pop ();
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1114 }
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1115
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1116 // Can be reset by defining a function.
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1117 if (! (reading_script_file \|\| reading_fcn_file \|\| reading_classdef_file))
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	1118 {
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	1119 current_input_column = 1;
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1120 input_line_number = command_editor::current_command_number ();
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	1121 }
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1122
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1123 // Only ask for input from stdin if we are expecting interactive
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1124 // input.
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1125 if ((interactive \|\| forced_interactive)
3880 c21ae2c5840f [project @ 2002-03-26 02:23:06 by jwe] jwe parents: 3867 diff changeset	1126 && ! (reading_fcn_file
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1127 \|\| reading_classdef_file
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1128 \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1129 \|\| get_input_from_eval_string
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1130 \|\| input_from_startup_file))
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1131 yyrestart (stdin);
991 18be848f10a9 [project @ 1994-12-15 06:06:46 by jwe] jwe parents: 985 diff changeset	1132
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1133 // Clear the buffer for help text.
4426 51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1134 while (! help_buf.empty ())
51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1135 help_buf.pop ();
1755 3a9462b655f1 [project @ 1996-01-22 04:47:22 by jwe] jwe parents: 1740 diff changeset	1136
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1137 // Reset other flags.
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1138 lexer_flags.init ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1139 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1140
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1141 static void
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1142 display_character (char c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1143 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1144 if (isgraph (c))
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1145 std::cerr << c;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1146 else
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1147 switch (c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1148 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1149 case 0:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1150 std::cerr << "NUL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1151 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1152
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1153 case 1:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1154 std::cerr << "SOH";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1155 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1156
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1157 case 2:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1158 std::cerr << "STX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1159 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1160
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1161 case 3:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1162 std::cerr << "ETX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1163 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1164
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1165 case 4:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1166 std::cerr << "EOT";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1167 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1168
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1169 case 5:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1170 std::cerr << "ENQ";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1171 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1172
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1173 case 6:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1174 std::cerr << "ACK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1175 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1176
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1177 case 7:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1178 std::cerr << "\\a";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1179 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1180
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1181 case 8:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1182 std::cerr << "\\b";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1183 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1184
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1185 case 9:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1186 std::cerr << "\\t";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1187 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1188
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1189 case 10:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1190 std::cerr << "\\n";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1191 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1192
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1193 case 11:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1194 std::cerr << "\\v";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1195 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1196
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1197 case 12:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1198 std::cerr << "\\f";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1199 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1200
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1201 case 13:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1202 std::cerr << "\\r";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1203 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1204
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1205 case 14:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1206 std::cerr << "SO";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1207 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1208
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1209 case 15:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1210 std::cerr << "SI";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1211 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1212
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1213 case 16:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1214 std::cerr << "DLE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1215 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1216
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1217 case 17:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1218 std::cerr << "DC1";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1219 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1220
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1221 case 18:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1222 std::cerr << "DC2";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1223 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1224
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1225 case 19:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1226 std::cerr << "DC3";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1227 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1228
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1229 case 20:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1230 std::cerr << "DC4";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1231 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1232
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1233 case 21:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1234 std::cerr << "NAK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1235 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1236
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1237 case 22:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1238 std::cerr << "SYN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1239 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1240
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1241 case 23:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1242 std::cerr << "ETB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1243 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1244
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1245 case 24:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1246 std::cerr << "CAN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1247 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1248
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1249 case 25:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1250 std::cerr << "EM";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1251 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1252
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1253 case 26:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1254 std::cerr << "SUB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1255 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1256
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1257 case 27:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1258 std::cerr << "ESC";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1259 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1260
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1261 case 28:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1262 std::cerr << "FS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1263 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1264
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1265 case 29:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1266 std::cerr << "GS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1267 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1268
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1269 case 30:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1270 std::cerr << "RS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1271 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1272
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1273 case 31:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1274 std::cerr << "US";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1275 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1276
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1277 case 32:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1278 std::cerr << "SPACE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1279 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1280
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1281 case 127:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1282 std::cerr << "DEL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1283 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1284 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1285 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1286
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1287 static int
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1288 text_yyinput (void)
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1289 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1290 int c = yyinput ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1291
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1292 if (lexer_debug_flag)
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1293 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1294 std::cerr << "I: ";
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1295 display_character (c);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1296 std::cerr << std::endl;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1297 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1298
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1299 // Convert CRLF into just LF and single CR into LF.
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1300
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1301 if (c == '\r')
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1302 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1303 c = yyinput ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1304
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1305 if (lexer_debug_flag)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1306 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1307 std::cerr << "I: ";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1308 display_character (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1309 std::cerr << std::endl;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1310 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1311
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1312 if (c != '\n')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1313 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1314 xunput (c, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1315 c = '\n';
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1316 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1317 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1318
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1319 if (c == '\n')
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1320 input_line_number++;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1321
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1322 return c;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1323 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1324
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1325 static void
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1326 xunput (char c, char *buf)
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1327 {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1328 if (lexer_debug_flag)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1329 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1330 std::cerr << "U: ";
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1331 display_character (c);
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1332 std::cerr << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1333 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1334
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1335 if (c == '\n')
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1336 input_line_number--;
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1337
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1338 yyunput (c, buf);
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1339 }
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1340
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1341 // If we read some newlines, we need figure out what column we're
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1342 // really looking at.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1343
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1344 static void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1345 fixup_column_count (char *s)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1346 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1347 char c;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1348 while ((c = *s++) != '\0')
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1349 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1350 if (c == '\n')
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1351 {
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1352 input_line_number++;
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1353 current_input_column = 1;
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1354 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1355 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1356 current_input_column++;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1357 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1358 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1359
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1360 // Include these so that we don't have to link to libfl.a.
246 e4d5f689f06d [project @ 1993-12-04 20:01:37 by jwe] jwe parents: 240 diff changeset	1361
3332 7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe] jwe parents: 3263 diff changeset	1362 int
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1363 yywrap (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1364 {
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1365 return 1;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1366 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1367
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1368 // Tell us all what the current buffer is.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1369
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1370 YY_BUFFER_STATE
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1371 current_buffer (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1372 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1373 return YY_CURRENT_BUFFER;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1374 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1375
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1376 // Create a new buffer.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1377
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1378 YY_BUFFER_STATE
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1379 create_buffer (FILE *f)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1380 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1381 return yy_create_buffer (f, YY_BUF_SIZE);
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1382 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1383
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1384 // Start reading a new buffer.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1385
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1386 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1387 switch_to_buffer (YY_BUFFER_STATE buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1388 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1389 yy_switch_to_buffer (buf);
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1390 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1391
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1392 // Delete a buffer.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1393
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1394 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1395 delete_buffer (YY_BUFFER_STATE buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1396 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1397 yy_delete_buffer (buf);
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1398 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1399
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1400 // Restore a buffer (for unwind-prot).
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1401
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1402 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1403 restore_input_buffer (void *buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1404 {
2861 6dcb8e1c9bb2 [project @ 1997-04-13 23:21:38 by jwe] jwe parents: 2857 diff changeset	1405 switch_to_buffer (static_cast<YY_BUFFER_STATE> (buf));
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1406 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1407
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1408 // Delete a buffer (for unwind-prot).
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1409
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1410 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1411 delete_input_buffer (void *buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1412 {
2861 6dcb8e1c9bb2 [project @ 1997-04-13 23:21:38 by jwe] jwe parents: 2857 diff changeset	1413 delete_buffer (static_cast<YY_BUFFER_STATE> (buf));
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1414 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1415
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1416 static bool
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1417 inside_any_object_index (void)
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1418 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1419 bool retval = false;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1420
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1421 for (std::list<bool>::const_iterator i = lexer_flags.looking_at_object_index.begin ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1422 i != lexer_flags.looking_at_object_index.end (); i++)
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1423 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1424 if (*i)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1425 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1426 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1427 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1428 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1429 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1430
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1431 return retval;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1432 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1433
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1434 // 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	1435
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1436 static int
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	1437 is_keyword_token (const std::string& s)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1438 {
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	1439 int l = input_line_number;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	1440 int c = current_input_column;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	1441
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	1442 int len = s.length ();
922 708827b941b4 [project @ 1994-11-14 22:14:13 by jwe] jwe parents: 916 diff changeset	1443
5088 7830f271a53f [project @ 2004-12-01 19:54:45 by jwe] jwe parents: 5035 diff changeset	1444 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	1445
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1446 if (kw)
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	1447 {
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1448 yylval.tok_val = 0;
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1449
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1450 switch (kw->kw_id)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1451 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1452 case break_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1453 case catch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1454 case continue_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1455 case else_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1456 case otherwise_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1457 case return_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1458 case unwind_protect_cleanup_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1459 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1460 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1461
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1462 case case_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1463 case elseif_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1464 case global_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1465 case static_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1466 case until_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1467 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1468
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1469 case end_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1470 if (! reading_classdef_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1471 && (inside_any_object_index ()
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1472 \|\| (lexer_flags.defining_func
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1473 && ! (lexer_flags.looking_at_return_list
11464 21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	1474 \|\| lexer_flags.parsed_function_name.top ()))))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1475 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1476
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1477 yylval.tok_val = new token (token::simple_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1478 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1479 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1480
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1481 case end_try_catch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1482 yylval.tok_val = new token (token::try_catch_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1483 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1484 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1485
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1486 case end_unwind_protect_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1487 yylval.tok_val = new token (token::unwind_protect_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1488 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1489 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1490
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1491 case endfor_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1492 yylval.tok_val = new token (token::for_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1493 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1494 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1495
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1496 case endfunction_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1497 yylval.tok_val = new token (token::function_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1498 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1499 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1500
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1501 case endif_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1502 yylval.tok_val = new token (token::if_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1503 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1504 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1505
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1506 case endswitch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1507 yylval.tok_val = new token (token::switch_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1508 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1509 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1510
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1511 case endwhile_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1512 yylval.tok_val = new token (token::while_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1513 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1514 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1515
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1516 case endclassdef_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1517 yylval.tok_val = new token (token::classdef_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1518 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1519 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1520
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1521 case endevents_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1522 yylval.tok_val = new token (token::events_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1523 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1524 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1525
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1526 case endmethods_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1527 yylval.tok_val = new token (token::methods_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1528 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1529 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1530
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1531 case endproperties_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1532 yylval.tok_val = new token (token::properties_end, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1533 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1534 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1535
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1536 case for_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1537 case while_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1538 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1539 lexer_flags.looping++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1540 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1541
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1542 case do_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1543 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1544 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1545 lexer_flags.looping++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1546 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1547
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1548 case try_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1549 case unwind_protect_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1550 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1551 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1552 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1553
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1554 case if_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1555 case switch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1556 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1557 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1558
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1559 case get_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1560 case set_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1561 // 'get' and 'set' are keywords in classdef method
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1562 // declarations.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1563 if (! lexer_flags.maybe_classdef_get_set_method)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1564 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1565 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1566
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1567 case properties_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1568 case methods_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1569 case events_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1570 // 'properties', 'methods' and 'events' are keywords for
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1571 // classdef blocks.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1572 if (! lexer_flags.parsing_classdef)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1573 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1574 // fall through ...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1575
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1576 case classdef_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1577 // 'classdef' is always a keyword.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1578 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1579 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1580
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1581 case function_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1582 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1583
11367 b2191ebea12f don't process input_event_hook when we are parsing a function John W. Eaton <jwe@octave.org> parents: 11217 diff changeset	1584 lexer_flags.defining_func++;
11464 21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	1585 lexer_flags.parsed_function_name.push (false);
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1586
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1587 if (! (reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1588 \|\| reading_classdef_file))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1589 input_line_number = 1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1590 break;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1591
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1592 case magic_file_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1593 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1594 if ((reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1595 \|\| reading_classdef_file)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1596 && ! curr_fcn_file_full_name.empty ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1597 yylval.tok_val = new token (curr_fcn_file_full_name, l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1598 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1599 yylval.tok_val = new token ("stdin", l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1600 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1601 break;
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1602
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1603 case magic_line_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1604 yylval.tok_val = new token (static_cast<double> (l), "", l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1605 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1606
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1607 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1608 panic_impossible ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1609 }
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1610
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1611 if (! yylval.tok_val)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1612 yylval.tok_val = new token (l, c);
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1613
476 de9de43ad21f [project @ 1994-06-24 16:17:47 by jwe] jwe parents: 446 diff changeset	1614 token_stack.push (yylval.tok_val);
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1615
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1616 return kw->tok;
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	1617 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1618
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1619 return 0;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1620 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1621
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1622 static bool
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	1623 is_variable (const std::string& name)
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1624 {
8001 ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	1625 return (symbol_table::is_variable (name)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1626 \|\| (lexer_flags.pending_local_variables.find (name)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1627 != lexer_flags.pending_local_variables.end ()));
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1628 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1629
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1630 static std::string
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1631 grab_block_comment (stream_reader& reader, bool& eof)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1632 {
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1633 std::string buf;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1634
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1635 bool at_bol = true;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1636 bool look_for_marker = false;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1637
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1638 bool warned_incompatible = false;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1639
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1640 int c = 0;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1641
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1642 while ((c = reader.getc ()) != EOF)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1643 {
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1644 current_input_column++;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1645
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1646 if (look_for_marker)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1647 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1648 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1649 look_for_marker = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1650
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1651 if (c == '{' \|\| c == '}')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1652 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1653 std::string tmp_buf (1, static_cast<char> (c));
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1654
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1655 int type = c;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1656
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1657 bool done = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1658
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1659 while ((c = reader.getc ()) != EOF && ! done)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1660 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1661 current_input_column++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1662
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1663 switch (c)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1664 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1665 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1666 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1667 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1668 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1669
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1670 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1671 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1672 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1673 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1674 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1675
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1676 if (type == '{')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1677 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1678 block_comment_nesting_level++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1679 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1680 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1681 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1682 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1683 block_comment_nesting_level--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1684 promptflag++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1685
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1686 if (block_comment_nesting_level == 0)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1687 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1688 buf += grab_comment_block (reader, true, eof);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1689
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1690 return buf;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1691 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1692 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1693 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1694 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1695
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1696 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1697 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1698 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1699 buf += tmp_buf;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1700 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1701 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1702 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1703 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1704 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1705 }
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1706
7898 cce16b4e0970 lex.l (grab_block_comment): Use parens around \|\| expression within && expression John W. Eaton <jwe@octave.org> parents: 7728 diff changeset	1707 if (at_bol && (c == '%' \|\| c == '#'))
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1708 {
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1709 if (c == '#' && ! warned_incompatible)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1710 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1711 warned_incompatible = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1712 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1713 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1714
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1715 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1716 look_for_marker = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1717 }
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1718 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1719 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1720 buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1721
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1722 if (c == '\n')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1723 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1724 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1725 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1726 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1727 }
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1728 }
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1729
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1730 if (c == EOF)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1731 eof = true;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1732
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1733 return buf;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1734 }
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1735
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1736 std::string
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1737 grab_comment_block (stream_reader& reader, bool at_bol,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1738 bool& eof)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1739 {
4426 51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1740 std::string buf;
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1741
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1742 // TRUE means we are at the beginning of a comment block.
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1743 bool begin_comment = false;
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1744
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1745 // TRUE means we are currently reading a comment block.
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1746 bool in_comment = false;
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1747
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1748 bool warned_incompatible = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	1749
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1750 int c = 0;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1751
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1752 while ((c = reader.getc ()) != EOF)
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1753 {
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1754 current_input_column++;
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1755
2300 9484969866d2 [project @ 1996-06-24 07:13:26 by jwe] jwe parents: 2200 diff changeset	1756 if (begin_comment)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1757 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1758 if (c == '%' \|\| c == '#')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1759 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1760 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1761 continue;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1762 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1763 else if (at_bol && c == '{')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1764 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1765 std::string tmp_buf (1, static_cast<char> (c));
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1766
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1767 bool done = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1768
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1769 while ((c = reader.getc ()) != EOF && ! done)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1770 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1771 current_input_column++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1772
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1773 switch (c)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1774 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1775 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1776 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1777 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1778 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1779
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1780 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1781 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1782 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1783 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1784 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1785
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1786 block_comment_nesting_level++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1787 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1788
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1789 buf += grab_block_comment (reader, eof);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1790
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1791 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1792
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1793 if (eof)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1794 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1795 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1796 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1797
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1798 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1799 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1800 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1801 buf += tmp_buf;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1802 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1803 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1804 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1805 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1806 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1807 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1808 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1809 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1810 begin_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1811 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1812 }
2300 9484969866d2 [project @ 1996-06-24 07:13:26 by jwe] jwe parents: 2200 diff changeset	1813
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1814 if (in_comment)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1815 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1816 buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1817
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1818 if (c == '\n')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1819 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1820 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1821 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1822 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1823
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1824 // FIXME -- bailing out here prevents things like
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1825 //
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1826 // octave> # comment
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1827 // octave> x = 1
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1828 //
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1829 // from failing at the command line, while still
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1830 // allowing blocks of comments to be grabbed properly
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1831 // for function doc strings. But only the first line of
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1832 // a mult-line doc string will be picked up for
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1833 // functions defined on the command line. We need a
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1834 // better way of collecting these comments...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1835 if (! (reading_fcn_file \|\| reading_script_file))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1836 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1837 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1838 }
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1839 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1840 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1841 switch (c)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1842 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1843 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1844 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1845 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1846
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1847 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1848 if (! warned_incompatible)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1849 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1850 warned_incompatible = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1851 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1852 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1853 // fall through...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1854
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1855 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1856 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1857 begin_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1858 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1859
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1860 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1861 current_input_column--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1862 reader.ungetc (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1863 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1864 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1865 }
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1866 }
991 18be848f10a9 [project @ 1994-12-15 06:06:46 by jwe] jwe parents: 985 diff changeset	1867
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1868 done:
991 18be848f10a9 [project @ 1994-12-15 06:06:46 by jwe] jwe parents: 985 diff changeset	1869
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1870 if (c == EOF)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1871 eof = true;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1872
4426 51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1873 return buf;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1874 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1875
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1876 class
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1877 flex_stream_reader : public stream_reader
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1878 {
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1879 public:
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1880 flex_stream_reader (char *buf_arg) : stream_reader (), buf (buf_arg) { }
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1881
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1882 int getc (void) { return ::text_yyinput (); }
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1883 int ungetc (int c) { ::xunput (c, buf); return 0; }
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1884
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1885 private:
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1886 char *buf;
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1887 };
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1888
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1889 static int
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1890 process_comment (bool start_in_block, bool& eof)
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1891 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1892 eof = false;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1893
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1894 std::string help_txt;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1895
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1896 if (! help_buf.empty ())
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1897 help_txt = help_buf.top ();
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1898
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1899 flex_stream_reader flex_reader (yytext);
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1900
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1901 // process_comment is only supposed to be called when we are not
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1902 // initially looking at a block comment.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1903
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1904 std::string txt = start_in_block
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1905 ? grab_block_comment (flex_reader, eof)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1906 : grab_comment_block (flex_reader, false, eof);
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1907
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1908 if (lexer_debug_flag)
8536 de1b944d5306 lex.l: finish previous change John W. Eaton <jwe@octave.org> parents: 8535 diff changeset	1909 std::cerr << "C: " << txt << std::endl;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1910
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1911 if (help_txt.empty () && nesting_level.none ())
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1912 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1913 if (! help_buf.empty ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1914 help_buf.pop ();
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1915
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1916 help_buf.push (txt);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1917 }
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1918
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1919 octave_comment_buffer::append (txt);
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1920
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1921 current_input_column = 1;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1922 lexer_flags.quote_is_transpose = false;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1923 lexer_flags.convert_spaces_to_comma = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1924 lexer_flags.at_beginning_of_statement = true;
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1925
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1926 if (YY_START == COMMAND_START)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1927 BEGIN (INITIAL);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1928
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1929 if (nesting_level.none ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1930 return '\n';
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1931 else if (nesting_level.is_bracket_or_brace ())
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1932 return ';';
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1933 else
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1934 return 0;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1935 }
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1936
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1937 // Return 1 if the given character matches any character in the given
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1938 // string.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1939
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1940 static bool
2804 eedc2f3f61f7 [project @ 1997-03-11 04:34:50 by jwe] jwe parents: 2764 diff changeset	1941 match_any (char c, const char *s)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1942 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1943 char tmp;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1944 while ((tmp = *s++) != '\0')
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1945 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1946 if (c == tmp)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1947 return true;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1948 }
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1949 return false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1950 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1951
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1952 // Given information about the spacing surrounding an operator,
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1953 // return 1 if it looks like it should be treated as a binary
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1954 // operator. For example,
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1955 //
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	1956 // [ 1 + 2 ] or [ 1+ 2] or [ 1+2 ] ==> binary
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	1957 //
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	1958 // [ 1 +2 ] ==> unary
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1959
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1960 static bool
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1961 looks_like_bin_op (bool spc_prev, int next_char)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1962 {
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1963 bool spc_next = (next_char == ' ' \|\| next_char == '\t');
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1964
608 a675e03540dd [project @ 1994-08-13 23:50:19 by jwe] jwe parents: 584 diff changeset	1965 return ((spc_prev && spc_next) \|\| ! spc_prev);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1966 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1967
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1968 // Recognize separators. If the separator is a CRLF pair, it is
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1969 // replaced by a single LF.
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1970
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1971 static bool
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1972 next_token_is_sep_op (void)
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1973 {
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1974 bool retval = false;
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1975
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1976 int c = text_yyinput ();
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1977
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1978 retval = match_any (c, ",;\n]");
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1979
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1980 xunput (c, yytext);
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1981
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1982 return retval;
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1983 }
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1984
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1985 // Try to determine if the next token should be treated as a postfix
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1986 // unary operator. This is ugly, but it seems to do the right thing.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1987
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1988 static bool
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1989 next_token_is_postfix_unary_op (bool spc_prev)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1990 {
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1991 bool un_op = false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1992
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	1993 int c0 = text_yyinput ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1994
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1995 if (c0 == '\'' && ! spc_prev)
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1996 {
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1997 un_op = true;
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1998 }
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1999 else if (c0 == '.')
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2000 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2001 int c1 = text_yyinput ();
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2002 un_op = (c1 == '\'');
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2003 xunput (c1, yytext);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2004 }
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2005 else if (c0 == '+')
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2006 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2007 int c1 = text_yyinput ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2008 un_op = (c1 == '+');
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2009 xunput (c1, yytext);
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2010 }
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2011 else if (c0 == '-')
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2012 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2013 int c1 = text_yyinput ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2014 un_op = (c1 == '-');
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2015 xunput (c1, yytext);
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2016 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2017
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2018 xunput (c0, yytext);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2019
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2020 return un_op;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2021 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2022
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2023 // Try to determine if the next token should be treated as a binary
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2024 // operator.
1521 b3e4ca4f75a0 [project @ 1995-10-04 05:10:36 by jwe] jwe parents: 1520 diff changeset	2025 //
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2026 // This kluge exists because whitespace is not always ignored inside
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2027 // the square brackets that are used to create matrix objects (though
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2028 // spacing only really matters in the cases that can be interpreted
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2029 // either as binary ops or prefix unary ops: currently just +, -).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2030 //
3779 3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2031 // Note that a line continuation directly following a + or - operator
3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2032 // (e.g., the characters '[' 'a' ' ' '+' '\' LFD 'b' ']') will be
3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2033 // parsed as a binary operator.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2034
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2035 static bool
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2036 next_token_is_bin_op (bool spc_prev)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2037 {
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2038 bool bin_op = false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2039
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2040 int c0 = text_yyinput ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2041
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2042 switch (c0)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2043 {
777 a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2044 case '+':
a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2045 case '-':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2046 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2047 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2048
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2049 switch (c1)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2050 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2051 case '+':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2052 case '-':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2053 // Unary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2054 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2055
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2056 case '=':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2057 // Binary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2058 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2059 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2060
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2061 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2062 // Could be either, spacing matters.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2063 bin_op = looks_like_bin_op (spc_prev, c1);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2064 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2065 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2066
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2067 xunput (c1, yytext);
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2068 }
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2069 break;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2070
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2071 case ':':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2072 case '/':
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2073 case '\\':
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2074 case '^':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2075 // Always a binary op (may also include /=, \=, and ^=).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2076 bin_op = true;
1276 cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2077 break;
cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2078
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2079 // .+ .- ./ .\ .^ .* .**
1554 b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2080 case '.':
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2081 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2082 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2083
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2084 if (match_any (c1, "+-/\\^*"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2085 // Always a binary op (may also include .+=, .-=, ./=, ...).
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2086 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2087 else if (! isdigit (c1) && c1 != ' ' && c1 != '\t' && c1 != '.')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2088 // A structure element reference is a binary op.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2089 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2090
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2091 xunput (c1, yytext);
1554 b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2092 }
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2093 break;
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2094
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2095 // = == & && \| \|\| * **
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2096 case '=':
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2097 case '&':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2098 case '\|':
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2099 case '*':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2100 // Always a binary op (may also include ==, &&, \|\|, **).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2101 bin_op = true;
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2102 break;
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2103
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2104 // < <= <> > >=
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2105 case '<':
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2106 case '>':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2107 // Always a binary op (may also include <=, <>, >=).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2108 bin_op = true;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2109 break;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2110
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2111 // ~= !=
777 a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2112 case '~':
a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2113 case '!':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2114 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2115 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2116
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2117 // ~ and ! can be unary ops, so require following =.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2118 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2119 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2120
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2121 xunput (c1, yytext);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2122 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2123 break;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2124
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2125 default:
1276 cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2126 break;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2127 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2128
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2129 xunput (c0, yytext);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2130
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2131 return bin_op;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2132 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2133
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2134 // Used to delete trailing white space from tokens.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2135
3536 e8fbc8c3d6d9 [project @ 2000-02-02 12:01:00 by jwe] jwe parents: 3523 diff changeset	2136 static std::string
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2137 strip_trailing_whitespace (char *s)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2138 {
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	2139 std::string retval = s;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2140
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	2141 size_t pos = retval.find_first_of (" \t");
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2142
8021 85184151822e fix typo in NPOS change John W. Eaton <jwe@octave.org> parents: 8019 diff changeset	2143 if (pos != std::string::npos)
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	2144 retval.resize (pos);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2145
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2146 return retval;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2147 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2148
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2149 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2150
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2151 static void
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2152 scan_for_comments (const char *text)
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2153 {
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2154 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2155
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2156 bool in_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2157 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2158
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2159 int len = strlen (text);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2160 int i = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2161
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2162 while (i < len)
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2163 {
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2164 char c = text[i++];
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2165
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2166 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2167 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2168 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2169 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2170 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2171 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2172 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2173 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2174 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2175 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2176 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2177 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2178 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2179 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2180 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2181 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2182
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2183 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2184 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2185 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2186 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2187 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2188 comment_buf.resize (0);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2189 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2190 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2191 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2192 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2193
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2194 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2195 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2196 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2197 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2198 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2199 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2200 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2201 }
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2202 }
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2203
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2204 if (! comment_buf.empty ())
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2205 octave_comment_buffer::append (comment_buf);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2206 }
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2207
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2208 // Discard whitespace, including comments and continuations.
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2209 //
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2210 // Return value is logical OR of the following values:
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2211 //
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2212 // ATE_NOTHING : no spaces to eat
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2213 // ATE_SPACE_OR_TAB : space or tab in input
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2214 // ATE_NEWLINE : bare new line in input
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2215
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2216 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2217
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2218 static yum_yum
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2219 eat_whitespace (void)
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2220 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2221 yum_yum retval = ATE_NOTHING;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2222
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2223 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2224
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2225 bool in_comment = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2226 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2227
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2228 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2229
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2230 while ((c = text_yyinput ()) != EOF)
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2231 {
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2232 current_input_column++;
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2233
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2234 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2235 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2236 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2237 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2238 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2239 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2240 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2241 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2242 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2243 retval \|= ATE_SPACE_OR_TAB;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2244 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2245
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2246 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2247 retval \|= ATE_NEWLINE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2248 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2249 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2250 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2251 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2252 comment_buf.resize (0);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2253 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2254 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2255 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2256 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2257 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2258
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2259 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2260 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2261 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2262 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2263 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2264 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2265 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2266 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2267 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2268 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2269 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2270 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2271 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2272 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2273
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2274 case '.':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2275 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2276 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2277 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2278 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2279 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2280 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2281 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2282 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2283 if (have_ellipsis_continuation ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2284 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2285 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2286 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2287 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2288
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2289 case '\\':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2290 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2291 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2292 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2293 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2294 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2295 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2296 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2297 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2298 if (have_continuation ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2299 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2300 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2301 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2302 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2303
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2304 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2305 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2306 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2307 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2308 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2309 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2310 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2311 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2312 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2313 }
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2314 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2315
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2316 if (! comment_buf.empty ())
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2317 octave_comment_buffer::append (comment_buf);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2318
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2319 done:
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2320 xunput (c, yytext);
1082 d1a1608f1028 [project @ 1995-01-27 22:26:33 by jwe] jwe parents: 1072 diff changeset	2321 current_input_column--;
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2322 return retval;
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2323 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2324
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2325 static inline bool
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2326 looks_like_hex (const char *s, int len)
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2327 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2328 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	2329 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2330
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2331 static void
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2332 handle_number (void)
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2333 {
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2334 double value = 0.0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2335 int nread = 0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2336
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2337 if (looks_like_hex (yytext, strlen (yytext)))
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2338 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2339 unsigned long ival;
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2340
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2341 nread = sscanf (yytext, "%lx", &ival);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2342
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2343 value = static_cast<double> (ival);
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2344 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2345 else
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2346 {
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2347 char *tmp = strsave (yytext);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2348
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2349 char *idx = strpbrk (tmp, "Dd");
2621 337a09dd1c06 [project @ 1997-01-24 21:49:41 by jwe] jwe parents: 2614 diff changeset	2350
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2351 if (idx)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2352 *idx = 'e';
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2353
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2354 nread = sscanf (tmp, "%lf", &value);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2355
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2356 delete [] tmp;
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2357 }
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2358
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2359 // 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	2360
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2361 assert (nread == 1);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2362
3988 9a73d0e7e737 [project @ 2002-07-12 19:25:04 by jwe] jwe parents: 3985 diff changeset	2363 lexer_flags.quote_is_transpose = true;
9a73d0e7e737 [project @ 2002-07-12 19:25:04 by jwe] jwe parents: 3985 diff changeset	2364 lexer_flags.convert_spaces_to_comma = true;
11217 521373e25613 correctly parse {1 2 {3 4}} John W. Eaton <jwe@octave.org> parents: 10426 diff changeset	2365 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2366 lexer_flags.at_beginning_of_statement = false;
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2367
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2368 yylval.tok_val = new token (value, yytext, input_line_number,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2369 current_input_column);
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2370
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2371 token_stack.push (yylval.tok_val);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2372
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2373 current_input_column += yyleng;
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2374
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2375 do_comma_insert_check ();
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2376 }
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2377
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2378 // We have seen a backslash and need to find out if it should be
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2379 // treated as a continuation character. If so, this eats it, up to
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2380 // and including the new line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2381 //
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2382 // Match whitespace only, followed by a comment character or newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2383 // Once a comment character is found, discard all input until newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2384 // If non-whitespace characters are found before comment
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2385 // characters, return 0. Otherwise, return 1.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2386
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2387 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2388
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2389 static bool
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2390 have_continuation (bool trailing_comments_ok)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2391 {
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2392 std::ostringstream buf;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2393
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2394 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2395
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2396 bool in_comment = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2397 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2398
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2399 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2400
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2401 while ((c = text_yyinput ()) != EOF)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2402 {
3802 4f1a26a730fd [project @ 2001-02-26 20:26:14 by jwe] jwe parents: 3796 diff changeset	2403 buf << static_cast<char> (c);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2404
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2405 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2406 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2407 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2408 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2409 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2410 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2411 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2412 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2413 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2414 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2415
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2416 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2417 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2418 if (trailing_comments_ok)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2419 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2420 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2421 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2422 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2423 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2424 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2425 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2426 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2427 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2428 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2429 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2430 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2431 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2432 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2433 goto cleanup;
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
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2436 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2437 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2438 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2439 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2440 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2441 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2442 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2443 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2444 gripe_matlab_incompatible_continuation ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2445 return true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2446
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2447 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2448 if (in_comment)
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 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2451 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2452 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2453 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2454 goto cleanup;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2455 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2456 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2457 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2458
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2459 xunput (c, yytext);
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2460 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2461
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2462 cleanup:
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2463
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2464 std::string s = buf.str ();
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2465
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2466 int len = s.length ();
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2467 while (len--)
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2468 xunput (s[len], yytext);
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2469
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2470 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2471 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2472
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2473 // We have seen a `.' and need to see if it is the start of a
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2474 // continuation. If so, this eats it, up to and including the new
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2475 // line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2476
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2477 static bool
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2478 have_ellipsis_continuation (bool trailing_comments_ok)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2479 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2480 char c1 = text_yyinput ();
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2481 if (c1 == '.')
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2482 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2483 char c2 = text_yyinput ();
1091 54abf1b3a8e9 [project @ 1995-02-02 00:30:14 by jwe] jwe parents: 1088 diff changeset	2484 if (c2 == '.' && have_continuation (trailing_comments_ok))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2485 return true;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2486 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2487 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2488 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2489 xunput (c1, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2490 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2491 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2492 else
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2493 xunput (c1, yytext);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2494
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2495 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2496 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2497
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2498 // See if we have a continuation line. If so, eat it and the leading
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2499 // whitespace on the next line.
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2500 //
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2501 // Return value is the same as described for eat_whitespace().
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2502
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2503 static yum_yum
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2504 eat_continuation (void)
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2505 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2506 int retval = ATE_NOTHING;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2507
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2508 int c = text_yyinput ();
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2509
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2510 if ((c == '.' && have_ellipsis_continuation ())
3105 f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe] jwe parents: 3103 diff changeset	2511 \|\| (c == '\\' && have_continuation ()))
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2512 retval = eat_whitespace ();
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2513 else
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2514 xunput (c, yytext);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2515
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2516 return retval;
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2517 }
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2518
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2519 static int
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2520 handle_string (char delim)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2521 {
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2522 std::ostringstream buf;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2523
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2524 int bos_line = input_line_number;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2525 int bos_col = current_input_column;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2526
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2527 int c;
1031 59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe] jwe parents: 1019 diff changeset	2528 int escape_pending = 0;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2529
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2530 while ((c = text_yyinput ()) != EOF)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2531 {
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2532 current_input_column++;
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2533
3105 f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe] jwe parents: 3103 diff changeset	2534 if (c == '\\')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2535 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2536 if (delim == '\'' \|\| escape_pending)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2537 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2538 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2539 escape_pending = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2540 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2541 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2542 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2543 if (have_continuation (false))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2544 escape_pending = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2545 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2546 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2547 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2548 escape_pending = 1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2549 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2550 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2551 continue;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2552 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2553 else if (c == '.')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2554 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2555 if (delim == '\'' \|\| ! have_ellipsis_continuation (false))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2556 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2557 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2558 else if (c == '\n')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2559 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2560 error ("unterminated string constant");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2561 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2562 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2563 else if (c == delim)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2564 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2565 if (escape_pending)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2566 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2567 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2568 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2569 c = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2570 if (c == delim)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2571 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2572 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2573 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2574 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2575 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2576 std::string s;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2577 xunput (c, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2578
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2579 if (delim == '\'')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2580 s = buf.str ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2581 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2582 s = do_string_escapes (buf.str ());
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2583
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2584 lexer_flags.quote_is_transpose = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2585 lexer_flags.convert_spaces_to_comma = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2586
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2587 yylval.tok_val = new token (s, bos_line, bos_col);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2588 token_stack.push (yylval.tok_val);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2589
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2590 if (delim == '"')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2591 gripe_matlab_incompatible ("\" used as string delimiter");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2592 else if (delim == '\'')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2593 gripe_single_quote_string ();
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2594
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2595 lexer_flags.looking_for_object_index = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2596 lexer_flags.at_beginning_of_statement = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2597
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2598 return delim == '"' ? DQ_STRING : SQ_STRING;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2599 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2600 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2601 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2602 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2603 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2604 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2605 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2606
1031 59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe] jwe parents: 1019 diff changeset	2607 escape_pending = 0;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2608 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2609
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2610 return LEXICAL_ERROR;
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2611 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2612
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2613 static bool
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2614 next_token_is_assign_op (void)
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2615 {
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2616 bool retval = false;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2617
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2618 int c0 = text_yyinput ();
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2619
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2620 switch (c0)
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2621 {
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2622 case '=':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2623 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2624 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2625 xunput (c1, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2626 if (c1 != '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2627 retval = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2628 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2629 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2630
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2631 case '+':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2632 case '-':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2633 case '*':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2634 case '/':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2635 case '\\':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2636 case '&':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2637 case '\|':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2638 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2639 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2640 xunput (c1, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2641 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2642 retval = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2643 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2644 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2645
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2646 case '.':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2647 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2648 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2649 if (match_any (c1, "+-*/\\"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2650 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2651 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2652 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2653 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2654 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2655 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2656 xunput (c1, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2657 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2658 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2659
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2660 case '>':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2661 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2662 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2663 if (c1 == '>')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2664 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2665 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2666 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2667 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2668 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2669 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2670 xunput (c1, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2671 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2672 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2673
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2674 case '<':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2675 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2676 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2677 if (c1 == '<')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2678 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2679 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2680 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2681 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2682 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2683 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2684 xunput (c1, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2685 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2686 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2687
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2688 default:
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2689 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2690 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2691
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2692 xunput (c0, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2693
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2694 return retval;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2695 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2696
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2697 static bool
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2698 next_token_is_index_op (void)
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2699 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2700 int c = text_yyinput ();
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2701 xunput (c, yytext);
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2702 return c == '(' \|\| c == '{';
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2703 }
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2704
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2705 static int
d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2706 handle_close_bracket (bool spc_gobbled, int bracket_type)
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2707 {
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2708 int retval = bracket_type;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2709
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2710 if (! nesting_level.none ())
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2711 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2712 nesting_level.remove ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2713
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2714 if (bracket_type == ']')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2715 lexer_flags.bracketflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2716 else if (bracket_type == '}')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2717 lexer_flags.braceflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2718 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2719 panic_impossible ();
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2720 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2721
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2722 if (lexer_flags.bracketflag == 0 && lexer_flags.braceflag == 0)
4323 0990c9b77109 [project @ 2003-02-14 07:36:26 by jwe] jwe parents: 4318 diff changeset	2723 BEGIN (INITIAL);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2724
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2725 if (bracket_type == ']'
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2726 && next_token_is_assign_op ()
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2727 && ! lexer_flags.looking_at_return_list)
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2728 {
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2729 retval = CLOSE_BRACE;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2730 }
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2731 else if ((lexer_flags.bracketflag \|\| lexer_flags.braceflag)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2732 && lexer_flags.convert_spaces_to_comma
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2733 && (nesting_level.is_bracket ()
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2734 \|\| (nesting_level.is_brace ()
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2735 && ! lexer_flags.looking_at_object_index.front ())))
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2736 {
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2737 bool index_op = next_token_is_index_op ();
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2738
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2739 // Don't insert comma if we are looking at something like
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2740 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2741 // [x{i}{j}] or [x{i}(j)]
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2742 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2743 // but do if we are looking at
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2744 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2745 // [x{i} {j}] or [x{i} (j)]
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2746
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2747 if (spc_gobbled \|\| ! (bracket_type == '}' && index_op))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2748 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2749 bool bin_op = next_token_is_bin_op (spc_gobbled);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2750
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2751 bool postfix_un_op = next_token_is_postfix_unary_op (spc_gobbled);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2752
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2753 bool sep_op = next_token_is_sep_op ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2754
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2755 if (! (postfix_un_op \|\| bin_op \|\| sep_op))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2756 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2757 maybe_warn_separator_insert (',');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2758
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2759 xunput (',', yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2760 return retval;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2761 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2762 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2763 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2764
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2765 lexer_flags.quote_is_transpose = true;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2766 lexer_flags.convert_spaces_to_comma = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2767
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2768 return retval;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2769 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2770
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2771 static void
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2772 maybe_unput_comma (int spc_gobbled)
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2773 {
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2774 if (nesting_level.is_bracket ()
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2775 \|\| (nesting_level.is_brace ()
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2776 && ! lexer_flags.looking_at_object_index.front ()))
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2777 {
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2778 int bin_op = next_token_is_bin_op (spc_gobbled);
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2779
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2780 int postfix_un_op = next_token_is_postfix_unary_op (spc_gobbled);
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2781
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2782 int c1 = text_yyinput ();
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	2783 int c2 = text_yyinput ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2784
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2785 xunput (c2, yytext);
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2786 xunput (c1, yytext);
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2787
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2788 int sep_op = next_token_is_sep_op ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2789
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2790 int dot_op = (c1 == '.'
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2791 && (isalpha (c2) \|\| isspace (c2) \|\| c2 == '_'));
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2792
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2793 if (postfix_un_op \|\| bin_op \|\| sep_op \|\| dot_op)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2794 return;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2795
3985 fa0ae9105656 [project @ 2002-07-11 04:02:00 by jwe] jwe parents: 3974 diff changeset	2796 int index_op = (c1 == '(' \|\| c1 == '{');
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2797
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2798 // If there is no space before the indexing op, we don't insert
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2799 // a comma.
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2800
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2801 if (index_op && ! spc_gobbled)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2802 return;
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2803
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2804 maybe_warn_separator_insert (',');
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2805
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2806 xunput (',', yytext);
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2807 }
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2808 }
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2809
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2810 static bool
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2811 next_token_can_follow_bin_op (void)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2812 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2813 std::stack<char> buf;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2814
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2815 int c = EOF;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2816
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2817 // Skip whitespace in current statement on current line
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2818 while (true)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2819 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2820 c = text_yyinput ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2821
8767 026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack John W. Eaton <jwe@octave.org> parents: 8746 diff changeset	2822 buf.push (c);
026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack John W. Eaton <jwe@octave.org> parents: 8746 diff changeset	2823
026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack John W. Eaton <jwe@octave.org> parents: 8746 diff changeset	2824 if (match_any (c, ",;\n") \|\| (c != ' ' && c != '\t'))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2825 break;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2826 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2827
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2828 // Restore input.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2829 while (! buf.empty ())
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2830 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2831 xunput (buf.top (), yytext);
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2832
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2833 buf.pop ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2834 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2835
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2836 return (isalnum (c) \|\| match_any (c, "!\"'(-[_{~"));
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2837 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2838
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2839 static bool
10052 5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2840 can_be_command (const std::string& tok)
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2841 {
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2842 // Don't allow these names to be treated as commands to avoid
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2843 // surprises when parsing things like "NaN ^2".
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2844
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2845 return ! (tok == "e"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2846 \|\| tok == "I" \|\| tok == "i"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2847 \|\| tok == "J" \|\| tok == "j"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2848 \|\| tok == "Inf" \|\| tok == "inf"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2849 \|\| tok == "NaN" \|\| tok == "nan");
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2850 }
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2851
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2852 static bool
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2853 looks_like_command_arg (void)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2854 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2855 bool retval = true;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2856
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2857 int c0 = text_yyinput ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2858
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2859 switch (c0)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2860 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2861 // = ==
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2862 case '=':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2863 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2864 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2865
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2866 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2867 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2868 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2869
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2870 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2871 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2872 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2873
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2874 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2875 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2876 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2877 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2878
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2879 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2880 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2881 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2882
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2883 case '(':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2884 case '{':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2885 // Indexing.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2886 retval = false;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2887 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2888
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2889 case '\n':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2890 // EOL.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2891 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2892
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2893 case '\'':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2894 case '"':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2895 // Beginning of a character string.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2896 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2897
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2898 // + - ++ -- += -=
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2899 case '+':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2900 case '-':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2901 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2902 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2903
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2904 switch (c1)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2905 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2906 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2907 // EOL.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2908 case '+':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2909 case '-':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2910 // Unary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2911 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2912
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2913 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2914 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2915 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2916 if (next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2917 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2918 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2919 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2920
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2921 case '=':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2922 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2923 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2924
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2925 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2926 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2927 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2928
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2929 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2930 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2931 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2932 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2933
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2934 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2935 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2936 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2937
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2938 case ':':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2939 case '/':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2940 case '\\':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2941 case '^':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2942 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2943 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2944
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2945 if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2946 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2947 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2948
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2949 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2950 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2951 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2952
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2953 // .+ .- ./ .\ .^ .* .**
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2954 case '.':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2955 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2956 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2957
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2958 if (match_any (c1, "+-/\\^*"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2959 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2960 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2961
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2962 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2963 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2964 int c3 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2965
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2966 if (! match_any (c3, ",;\n") && (c3 == ' ' \|\| c3 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2967 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2968 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2969
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2970 xunput (c3, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2971 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2972 else if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2973 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2974 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2975
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2976 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2977 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2978 else if (! match_any (c1, ",;\n")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2979 && (! isdigit (c1) && c1 != ' ' && c1 != '\t'
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2980 && c1 != '.'))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2981 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2982 // Structure reference. FIXME -- is this a complete check?
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2983
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2984 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2985 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2986
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2987 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2988 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2989 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2990
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2991 // & && \| \|\| * **
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2992 case '&':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2993 case '\|':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2994 case '*':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2995 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2996 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2997
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2998 if (c1 == c0)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2999 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3000 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3001
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3002 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3003 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3004 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3005
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3006 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3007 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3008 else if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3009 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3010 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3011
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3012 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3013 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3014 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3015
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3016 // < <= > >=
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3017 case '<':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3018 case '>':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3019 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3020 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3021
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3022 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3023 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3024 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3025
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3026 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3027 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3028 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3029
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3030 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3031 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3032 else if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3033 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3034 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3035
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3036 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3037 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3038 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3039
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3040 // ~= !=
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3041 case '~':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3042 case '!':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3043 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3044 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3045
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3046 // ~ and ! can be unary ops, so require following =.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3047 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3048 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3049 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3050
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3051 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3052 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3053 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3054
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3055 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3056 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3057 else if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3058 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3059 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3060
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3061 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3062 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3063 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3064
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3065 default:
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3066 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3067 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3068
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3069 xunput (c0, yytext);
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3070
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3071 return retval;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3072 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3073
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3074 static int
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3075 handle_superclass_identifier (void)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3076 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3077 eat_continuation ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3078
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3079 std::string pkg;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3080 std::string meth = strip_trailing_whitespace (yytext);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3081 size_t pos = meth.find ("@");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3082 std::string cls = meth.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3083 meth = meth.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3084
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3085 pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3086 if (pos != std::string::npos)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3087 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3088 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3089 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3090 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3091
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3092 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	3093 \|\| is_keyword_token (pkg));
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3094 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3095 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3096 error ("method, class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3097 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3098 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3099
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3100 yylval.tok_val
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3101 = new token (meth.empty () ? 0 : &(symbol_table::insert (meth)),
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3102 cls.empty () ? 0 : &(symbol_table::insert (cls)),
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3103 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3104 input_line_number, current_input_column);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3105 token_stack.push (yylval.tok_val);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3106
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3107 lexer_flags.convert_spaces_to_comma = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3108 current_input_column += yyleng;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3109
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3110 return SUPERCLASSREF;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3111 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3112
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3113 static int
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3114 handle_meta_identifier (void)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3115 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3116 eat_continuation ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3117
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3118 std::string pkg;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3119 std::string cls = strip_trailing_whitespace (yytext).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3120 size_t pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3121
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3122 if (pos != std::string::npos)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3123 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3124 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3125 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3126 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3127
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3128 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	3129 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3130 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3131 error ("class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3132 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3133 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3134
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3135 yylval.tok_val
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3136 = new token (cls.empty () ? 0 : &(symbol_table::insert (cls)),
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3137 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3138 input_line_number, current_input_column);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3139
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3140 token_stack.push (yylval.tok_val);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3141
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3142 lexer_flags.convert_spaces_to_comma = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3143 current_input_column += yyleng;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3144
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3145 return METAQUERY;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3146 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3147
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	3148 // 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	3149 // an identifier. Handles keywords. Return -1 if the identifier
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	3150 // should be ignored.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	3151
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3152 static int
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3153 handle_identifier (void)
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3154 {
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3155 bool at_bos = lexer_flags.at_beginning_of_statement;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3156
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3157 std::string tok = strip_trailing_whitespace (yytext);
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3158
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3159 int c = yytext[yyleng-1];
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3160
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3161 int cont_is_spc = eat_continuation ();
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3162
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3163 int spc_gobbled = (cont_is_spc \|\| c == ' ' \|\| c == '\t');
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3164
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3165 // If we are expecting a structure element, avoid recognizing
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3166 // 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	3167 // 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	3168 // decide whether to insert a comma.
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	3169
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3170 if (lexer_flags.looking_at_indirect_ref)
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3171 {
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3172 do_comma_insert_check ();
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3173
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3174 maybe_unput_comma (spc_gobbled);
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3175
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3176 yylval.tok_val = new token (tok, input_line_number,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3177 current_input_column);
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3178
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3179 token_stack.push (yylval.tok_val);
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3180
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3181 lexer_flags.quote_is_transpose = true;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3182 lexer_flags.convert_spaces_to_comma = true;
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3183 lexer_flags.looking_for_object_index = true;
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3184
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3185 current_input_column += yyleng;
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3186
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3187 return STRUCT_ELT;
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3188 }
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	3189
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3190 lexer_flags.at_beginning_of_statement = false;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3191
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3192 // The is_keyword_token may reset
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3193 // lexer_flags.at_beginning_of_statement. For example, if it sees
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3194 // an else token, then the next token is at the beginning of a
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3195 // statement.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3196
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3197 int kw_token = is_keyword_token (tok);
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3198
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3199 // If we found a keyword token, then the beginning_of_statement flag
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3200 // is already set. Otherwise, we won't be at the beginning of a
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3201 // statement.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3202
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3203 if (lexer_flags.looking_at_function_handle)
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3204 {
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3205 if (kw_token)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3206 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3207 error ("function handles may not refer to keywords");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3208
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3209 return LEXICAL_ERROR;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3210 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3211 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3212 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3213 yylval.tok_val = new token (tok, input_line_number,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3214 current_input_column);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3215
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3216 token_stack.push (yylval.tok_val);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3217
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3218 current_input_column += yyleng;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3219 lexer_flags.quote_is_transpose = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3220 lexer_flags.convert_spaces_to_comma = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3221 lexer_flags.looking_for_object_index = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3222
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3223 return FCN_HANDLE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3224 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3225 }
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3226
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	3227 // 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	3228 // Keywords can be followed by identifiers.
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3229
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3230 if (kw_token)
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3231 {
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3232 if (kw_token >= 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3233 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3234 current_input_column += yyleng;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3235 lexer_flags.quote_is_transpose = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3236 lexer_flags.convert_spaces_to_comma = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3237 lexer_flags.looking_for_object_index = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3238 }
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3239
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3240 return kw_token;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3241 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3242
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3243 // See if we have a plot keyword (title, using, with, or clear).
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3244
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	3245 int c1 = text_yyinput ();
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3246
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3247 bool next_tok_is_eq = false;
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3248 if (c1 == '=')
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3249 {
7728 13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser John W. Eaton <jwe@octave.org> parents: 7723 diff changeset	3250 int c2 = text_yyinput ();
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	3251 xunput (c2, yytext);
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3252
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3253 if (c2 != '=')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3254 next_tok_is_eq = true;
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3255 }
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3256
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	3257 xunput (c1, yytext);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	3258
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3259 // Kluge alert.
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3260 //
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3261 // If we are looking at a text style function, set up to gobble its
2745 76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe] jwe parents: 2716 diff changeset	3262 // arguments.
76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe] jwe parents: 2716 diff changeset	3263 //
76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe] jwe parents: 2716 diff changeset	3264 // If the following token is `=', or if we are parsing a function
3189 bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe] jwe parents: 3180 diff changeset	3265 // return list or function parameter list, or if we are looking at
bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe] jwe parents: 3180 diff changeset	3266 // something like [ab,cd] = foo (), force the symbol to be inserted
bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe] jwe parents: 3180 diff changeset	3267 // as a variable in the current symbol table.
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3268
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3269 if (! is_variable (tok))
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3270 {
10052 5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	3271 if (at_bos && spc_gobbled && can_be_command (tok)
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	3272 && looks_like_command_arg ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3273 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3274 BEGIN (COMMAND_START);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3275 }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3276 else if (next_tok_is_eq
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3277 \|\| lexer_flags.looking_at_decl_list
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3278 \|\| lexer_flags.looking_at_return_list
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3279 \|\| (lexer_flags.looking_at_parameter_list
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3280 && ! lexer_flags.looking_at_initializer_expression))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3281 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3282 symbol_table::force_variable (tok);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3283 }
8001 ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	3284 else if (lexer_flags.looking_at_matrix_or_assign_lhs)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3285 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3286 lexer_flags.pending_local_variables.insert (tok);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3287 }
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3288 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3289
4234 90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3290 // Find the token in the symbol table. Beware the magic
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3291 // transformation of the end keyword...
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3292
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3293 if (tok == "end")
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3294 tok = "__end__";
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3295
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	3296 yylval.tok_val = new token (&(symbol_table::insert (tok)),
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3297 input_line_number, current_input_column);
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	3298
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3299 token_stack.push (yylval.tok_val);
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3300
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3301 // After seeing an identifer, it is ok to convert spaces to a comma
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3302 // (if needed).
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3303
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3304 lexer_flags.convert_spaces_to_comma = true;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3305
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3306 if (! (next_tok_is_eq \|\| YY_START == COMMAND_START))
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3307 {
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3308 lexer_flags.quote_is_transpose = true;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3309
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3310 do_comma_insert_check ();
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3311
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3312 maybe_unput_comma (spc_gobbled);
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3313 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3314
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3315 current_input_column += yyleng;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3316
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3317 if (tok != "__end__")
29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3318 lexer_flags.looking_for_object_index = true;
29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3319
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3320 return NAME;
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3321 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3322
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3323 void
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3324 lexical_feedback::init (void)
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3325 {
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3326 // Not initially defining a matrix list.
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	3327 bracketflag = 0;
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3328
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	3329 // Not initially defining a cell array list.
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	3330 braceflag = 0;
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	3331
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3332 // Not initially inside a loop or if statement.
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3333 looping = 0;
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3334
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3335 // Not initially defining a function.
11367 b2191ebea12f don't process input_event_hook when we are parsing a function John W. Eaton <jwe@octave.org> parents: 11217 diff changeset	3336 defining_func = 0;
11464 21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	3337
21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	3338 // Not parsing an object index.
21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	3339 while (! parsed_function_name.empty ())
21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	3340 parsed_function_name.pop ();
21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11431 diff changeset	3341
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	3342 parsing_class_method = false;
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3343
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3344 // Not initially defining a class with classdef.
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3345 maybe_classdef_get_set_method = false;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3346 parsing_classdef = false;
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3347
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3348 // Not initiallly looking at a function handle.
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3349 looking_at_function_handle = 0;
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3350
8701 1652e39b934e handle command names in declaration lists John W. Eaton <jwe@octave.org> parents: 8537 diff changeset	3351 // Not parsing a function return, parameter, or declaration list.
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3352 looking_at_return_list = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3353 looking_at_parameter_list = false;
8701 1652e39b934e handle command names in declaration lists John W. Eaton <jwe@octave.org> parents: 8537 diff changeset	3354 looking_at_decl_list = false;
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3355
7634 ae90e05ad299 fix parameter list initializer bug John W. Eaton <jwe@octave.org> parents: 7587 diff changeset	3356 // Not looking at an argument list initializer expression.
ae90e05ad299 fix parameter list initializer bug John W. Eaton <jwe@octave.org> parents: 7587 diff changeset	3357 looking_at_initializer_expression = false;
ae90e05ad299 fix parameter list initializer bug John W. Eaton <jwe@octave.org> parents: 7587 diff changeset	3358
3796 c34164f566f6 [project @ 2001-02-14 00:17:54 by jwe] jwe parents: 3779 diff changeset	3359 // Not parsing a matrix or the left hand side of multi-value
c34164f566f6 [project @ 2001-02-14 00:17:54 by jwe] jwe parents: 3779 diff changeset	3360 // assignment statement.
c34164f566f6 [project @ 2001-02-14 00:17:54 by jwe] jwe parents: 3779 diff changeset	3361 looking_at_matrix_or_assign_lhs = false;
c34164f566f6 [project @ 2001-02-14 00:17:54 by jwe] jwe parents: 3779 diff changeset	3362
4234 90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3363 // Not parsing an object index.
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3364 while (! looking_at_object_index.empty ())
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3365 looking_at_object_index.pop_front ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3366
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3367 looking_at_object_index.push_front (false);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3368
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3369 // Object index not possible until we've seen something.
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3370 looking_for_object_index = false;
4234 90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3371
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3372 // Yes, we are at the beginning of a statement.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3373 at_beginning_of_statement = true;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3374
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3375 // No need to do comma insert or convert spaces to comma at
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3376 // beginning of input.
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3377 convert_spaces_to_comma = true;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3378 do_comma_insert = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3379
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3380 // Not initially looking at indirect references.
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3381 looking_at_indirect_ref = false;
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3382
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3383 // Quote marks strings intially.
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3384 quote_is_transpose = false;
8001 ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	3385
ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	3386 // Set of identifiers that might be local variable names is empty.
ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	3387 pending_local_variables.clear ();
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3388 }
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3389
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3390 bool
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3391 is_keyword (const std::string& s)
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3392 {
5088 7830f271a53f [project @ 2004-12-01 19:54:45 by jwe] jwe parents: 5035 diff changeset	3393 return octave_kw_hash::in_word_set (s.c_str (), s.length ()) != 0;
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3394 }
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3395
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3396 DEFUN (iskeyword, args, ,
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3397 "-- texinfo --\n\
11431 0d9640d755b1 Improve docstrings for all isXXX functions. Rik <octave@nomad.inbox5.com> parents: 11367 diff changeset	3398 @deftypefn {Built-in Function} {} iskeyword ()\n\
0d9640d755b1 Improve docstrings for all isXXX functions. Rik <octave@nomad.inbox5.com> parents: 11367 diff changeset	3399 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3400 Return true if @var{name} is an Octave keyword. If @var{name}\n\
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3401 is omitted, return a list of keywords.\n\
11431 0d9640d755b1 Improve docstrings for all isXXX functions. Rik <octave@nomad.inbox5.com> parents: 11367 diff changeset	3402 @seealso{isvarname, exist}\n\
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3403 @end deftypefn")
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3404 {
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3405 octave_value retval;
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3406
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3407 int argc = args.length () + 1;
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3408
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3409 string_vector argv = args.make_argv ("iskeyword");
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3410
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3411 if (error_state)
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3412 return retval;
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3413
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3414 if (argc == 1)
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3415 {
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3416 string_vector lst (TOTAL_KEYWORDS);
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3417
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3418 for (int i = 0; i < TOTAL_KEYWORDS; i++)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3419 lst[i] = wordlist[i].name;
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3420
8504 0e0bd07e6ae2 omission from last patch Jaroslav Hajek <highegg@gmail.com> parents: 8447 diff changeset	3421 retval = Cell (lst.sort ());
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3422 }
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3423 else if (argc == 2)
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3424 {
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3425 retval = is_keyword (argv[1]);
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3426 }
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3427 else
5823 080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe] jwe parents: 5794 diff changeset	3428 print_usage ();
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3429
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3430 return retval;
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3431 }
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3432
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3433 void
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3434 prep_lexer_for_script_file (void)
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3435 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3436 BEGIN (SCRIPT_FILE_BEGIN);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3437 }
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3438
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3439 void
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3440 prep_lexer_for_function_file (void)
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3441 {
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3442 BEGIN (FUNCTION_FILE_BEGIN);
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3443 }
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3444
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3445 static void
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3446 maybe_warn_separator_insert (char sep)
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3447 {
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	3448 std::string nm = curr_fcn_file_full_name;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3449
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3450 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3451 warning_with_id ("Octave:separator-insert",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3452 "potential auto-insertion of `%c' near line %d",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3453 sep, input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3454 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3455 warning_with_id ("Octave:separator-insert",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3456 "potential auto-insertion of `%c' near line %d of file %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3457 sep, input_line_number, nm.c_str ());
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3458 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3459
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3460 static void
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3461 gripe_single_quote_string (void)
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3462 {
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	3463 std::string nm = curr_fcn_file_full_name;
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3464
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3465 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3466 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3467 "single quote delimited string near line %d",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3468 input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3469 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3470 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3471 "single quote delimited string near line %d of file %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3472 input_line_number, nm.c_str ());
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3473 }
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3474
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3475 static void
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3476 gripe_matlab_incompatible (const std::string& msg)
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3477 {
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3478 std::string nm = curr_fcn_file_full_name;
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3479
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3480 if (nm.empty ())
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3481 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3482 "potential Matlab compatibility problem: %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3483 msg.c_str ());
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3484 else
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3485 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3486 "potential Matlab compatibility problem: %s near line %d offile %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3487 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	3488 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3489
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3490 static void
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3491 maybe_gripe_matlab_incompatible_comment (char c)
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3492 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3493 if (c == '#')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3494 gripe_matlab_incompatible ("# used as comment character");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3495 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3496
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3497 static void
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3498 gripe_matlab_incompatible_continuation (void)
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3499 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3500 gripe_matlab_incompatible ("\\ used as line continuation marker");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3501 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3502
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3503 static void
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3504 gripe_matlab_incompatible_operator (const std::string& op)
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3505 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3506 std::string t = op;
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3507 int n = t.length ();
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3508 if (t[n-1] == '\n')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3509 t.resize (n-1);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3510 gripe_matlab_incompatible (t + " used as operator");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3511 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3512
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3513 static void
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3514 display_token (int tok)
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3515 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3516 switch (tok)
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3517 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3518 case '=': std::cerr << "'='\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3519 case ':': std::cerr << "':'\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3520 case '-': std::cerr << "'-'\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3521 case '+': std::cerr << "'+'\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3522 case '': std::cerr << "''\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3523 case '/': std::cerr << "'/'\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3524 case ADD_EQ: std::cerr << "ADD_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3525 case SUB_EQ: std::cerr << "SUB_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3526 case MUL_EQ: std::cerr << "MUL_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3527 case DIV_EQ: std::cerr << "DIV_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3528 case LEFTDIV_EQ: std::cerr << "LEFTDIV_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3529 case POW_EQ: std::cerr << "POW_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3530 case EMUL_EQ: std::cerr << "EMUL_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3531 case EDIV_EQ: std::cerr << "EDIV_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3532 case ELEFTDIV_EQ: std::cerr << "ELEFTDIV_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3533 case EPOW_EQ: std::cerr << "EPOW_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3534 case AND_EQ: std::cerr << "AND_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3535 case OR_EQ: std::cerr << "OR_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3536 case LSHIFT_EQ: std::cerr << "LSHIFT_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3537 case RSHIFT_EQ: std::cerr << "RSHIFT_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3538 case LSHIFT: std::cerr << "LSHIFT\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3539 case RSHIFT: std::cerr << "RSHIFT\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3540 case EXPR_AND_AND: std::cerr << "EXPR_AND_AND\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3541 case EXPR_OR_OR: std::cerr << "EXPR_OR_OR\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3542 case EXPR_AND: std::cerr << "EXPR_AND\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3543 case EXPR_OR: std::cerr << "EXPR_OR\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3544 case EXPR_NOT: std::cerr << "EXPR_NOT\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3545 case EXPR_LT: std::cerr << "EXPR_LT\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3546 case EXPR_LE: std::cerr << "EXPR_LE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3547 case EXPR_EQ: std::cerr << "EXPR_EQ\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3548 case EXPR_NE: std::cerr << "EXPR_NE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3549 case EXPR_GE: std::cerr << "EXPR_GE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3550 case EXPR_GT: std::cerr << "EXPR_GT\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3551 case LEFTDIV: std::cerr << "LEFTDIV\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3552 case EMUL: std::cerr << "EMUL\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3553 case EDIV: std::cerr << "EDIV\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3554 case ELEFTDIV: std::cerr << "ELEFTDIV\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3555 case EPLUS: std::cerr << "EPLUS\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3556 case EMINUS: std::cerr << "EMINUS\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3557 case QUOTE: std::cerr << "QUOTE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3558 case TRANSPOSE: std::cerr << "TRANSPOSE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3559 case PLUS_PLUS: std::cerr << "PLUS_PLUS\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3560 case MINUS_MINUS: std::cerr << "MINUS_MINUS\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3561 case POW: std::cerr << "POW\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3562 case EPOW: std::cerr << "EPOW\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3563 case NUM: std::cerr << "NUM\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3564 case IMAG_NUM: std::cerr << "IMAG_NUM\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3565 case STRUCT_ELT: std::cerr << "STRUCT_ELT\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3566 case NAME: std::cerr << "NAME\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3567 case END: std::cerr << "END\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3568 case DQ_STRING: std::cerr << "DQ_STRING\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3569 case SQ_STRING: std::cerr << "SQ_STRING\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3570 case FOR: std::cerr << "FOR\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3571 case WHILE: std::cerr << "WHILE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3572 case DO: std::cerr << "DO\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3573 case UNTIL: std::cerr << "UNTIL\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3574 case IF: std::cerr << "IF\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3575 case ELSEIF: std::cerr << "ELSEIF\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3576 case ELSE: std::cerr << "ELSE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3577 case SWITCH: std::cerr << "SWITCH\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3578 case CASE: std::cerr << "CASE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3579 case OTHERWISE: std::cerr << "OTHERWISE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3580 case BREAK: std::cerr << "BREAK\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3581 case CONTINUE: std::cerr << "CONTINUE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3582 case FUNC_RET: std::cerr << "FUNC_RET\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3583 case UNWIND: std::cerr << "UNWIND\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3584 case CLEANUP: std::cerr << "CLEANUP\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3585 case TRY: std::cerr << "TRY\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3586 case CATCH: std::cerr << "CATCH\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3587 case GLOBAL: std::cerr << "GLOBAL\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3588 case STATIC: std::cerr << "STATIC\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3589 case FCN_HANDLE: std::cerr << "FCN_HANDLE\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3590 case END_OF_INPUT: std::cerr << "END_OF_INPUT\n\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3591 case LEXICAL_ERROR: std::cerr << "LEXICAL_ERROR\n\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3592 case FCN: std::cerr << "FCN\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3593 case CLOSE_BRACE: std::cerr << "CLOSE_BRACE\n"; break;
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3594 case SCRIPT_FILE: std::cerr << "SCRIPT_FILE\n"; break;
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3595 case FUNCTION_FILE: std::cerr << "FUNCTION_FILE\n"; break;
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3596 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3597 case METAQUERY: std::cerr << "METAQUERY\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3598 case GET: std::cerr << "GET\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3599 case SET: std::cerr << "SET\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3600 case PROPERTIES: std::cerr << "PROPERTIES\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3601 case METHODS: std::cerr << "METHODS\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3602 case EVENTS: std::cerr << "EVENTS\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3603 case CLASSDEF: std::cerr << "CLASSDEF\n"; break;
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3604 case '\n': std::cerr << "\\n\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3605 case '\r': std::cerr << "\\r\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3606 case '\t': std::cerr << "TAB\n"; break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3607 default:
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3608 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3609 if (tok < 256)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3610 std::cerr << static_cast<char> (tok) << "\n";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3611 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3612 std::cerr << "UNKNOWN(" << tok << ")\n";
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3613 }
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3614 break;
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3615 }
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3616 }
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3617
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3618 static void
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3619 display_state (void)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3620 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3621 std::cerr << "S: ";
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3622
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3623 switch (YY_START)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3624 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3625 case INITIAL:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3626 std::cerr << "INITIAL" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3627 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3628
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3629 case COMMAND_START:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3630 std::cerr << "COMMAND_START" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3631 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3632
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3633 case MATRIX_START:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3634 std::cerr << "MATRIX_START" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3635 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3636
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3637 case SCRIPT_FILE_BEGIN:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3638 std::cerr << "SCRIPT_FILE_BEGIN" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3639 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3640
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3641 case FUNCTION_FILE_BEGIN:
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3642 std::cerr << "FUNCTION_FILE_BEGIN" << std::endl;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3643 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3644
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3645 default:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3646 std::cerr << "UNKNOWN START STATE!" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3647 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3648 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3649 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3650
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3651 static void
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3652 lexer_debug (const char pattern, const char text)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3653 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3654 std::cerr << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3655
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3656 display_state ();
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3657
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3658 std::cerr << "P: " << pattern << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3659 std::cerr << "T: " << text << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3660 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3661
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3662 DEFUN (__display_tokens__, args, nargout,
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3663 "-- texinfo --\n\
8812 7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3664 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3665 Query or set the internal variable that determines whether Octave's\n\
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3666 lexer displays tokens as they are read.\n\
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3667 @end deftypefn")
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3668 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3669 return SET_INTERNAL_VARIABLE (display_tokens);
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3670 }
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3671
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3672 DEFUN (__token_count__, , ,
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3673 "-- texinfo --\n\
8812 7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3674 @deftypefn {Built-in Function} {} __token_count__ ()\n\
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3675 Number of language tokens processed since Octave startup.\n\
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3676 @end deftypefn")
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3677 {
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3678 return octave_value (Vtoken_count);
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3679 }
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3680
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3681 DEFUN (__lexer_debug_flag__, args, nargout,
8812 7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3682 "-- texinfo --\n\
7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3683 @deftypefn {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val}))\n\
7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3684 Undocumented internal function.\n\
7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3685 @end deftypefn")
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3686 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3687 octave_value retval;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3688
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3689 retval = set_internal_variable (lexer_debug_flag, args, nargout,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3690 "__lexer_debug_flag__");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3691
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3692 return retval;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3693 }

Mercurial > octave-nkf

annotate src/lex.ll @ 11464:21b5284fa78d