octave-nkf: src/lex.ll annotate

annotate src/lex.ll @ 10426:4db7beace28e

oct-parse.yy, lex.ll: use symbols via gnulib namespace

author	John W. Eaton <jwe@octave.org>
date	Sat, 20 Mar 2010 11:01:04 -0400
parents	479cc8a0a846
children	521373e25613

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
5615 d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	620 if (lexer_flags.defining_func && ! lexer_flags.parsed_function_name)
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	621 lexer_flags.looking_at_return_list = true;
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	622 else
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	623 lexer_flags.looking_at_matrix_or_assign_lhs = true;
d01f07aeaec5 [project @ 2006-02-10 21:30:41 by jwe] jwe parents: 5570 diff changeset	624
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	625 promptflag--;
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	626 eat_whitespace ();
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	627
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	628 lexer_flags.bracketflag++;
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	629 BEGIN (MATRIX_START);
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	630 COUNT_TOK_AND_RETURN ('[');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	631 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	632
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	633 \] {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	634 LEXER_DEBUG ("\\]");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	635
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	636 nesting_level.remove ();
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	637
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	638 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	639
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	640 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	641 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	642
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	643 TOK_RETURN (']');
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	644 }
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 // Imaginary numbers.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	648 %}
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 {NUMBER}{Im} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	651 LEXER_DEBUG ("{NUMBER}{Im}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	652
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	653 handle_number ();
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	654 COUNT_TOK_AND_RETURN (IMAG_NUM);
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	655 }
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 // 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	659 // the constant.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	660 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	661
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	662 {D}+/\.[\*/\\^\'] \|
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	663 {NUMBER} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	664 LEXER_DEBUG ("{D}+/\\.[\\*/\\^\\']\|{NUMBER}");
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	665 handle_number ();
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	666 COUNT_TOK_AND_RETURN (NUM);
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	667 }
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 // 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	671 // the <MATRIX_START> start state code above.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	672 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	673
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	674 {S}* {
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	675 current_input_column += yyleng;
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	676 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	677
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	678 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	679 // Continuation lines. Allow comments after continuations.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	680 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	681
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	682 {CONT}{S}*{NL} \|
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	683 {CONT}{S}*{COMMENT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	684 LEXER_DEBUG ("{CONT}{S}{NL}\|{CONT}{S}{COMMENT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	685
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	686 if (yytext[0] == '\\')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	687 gripe_matlab_incompatible_continuation ();
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	688 scan_for_comments (yytext);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	689 promptflag--;
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	690 input_line_number++;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	691 current_input_column = 1;
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	692 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	693
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	694 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	695 // End of file.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	696 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	697
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	698 <<EOF>> {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	699 LEXER_DEBUG ("<<EOF>>");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	700
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	701 if (block_comment_nesting_level != 0)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	702 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	703 warning ("block comment open at end of input");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	704
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	705 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	706 && ! curr_fcn_file_name.empty ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	707 warning ("near line %d of file `%s.m'",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	708 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	709 }
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	710
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	711 TOK_RETURN (END_OF_INPUT);
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	712 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	713
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	714 %{
970 9382316a8a01 [project @ 1994-12-12 06:03:34 by jwe] jwe parents: 969 diff changeset	715 // 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	716 // don't write directly on yytext.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	717 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	718
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	719 {IDENT}{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	720 LEXER_DEBUG ("{IDENT}{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	721
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	722 int id_tok = handle_identifier ();
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	723
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	724 if (id_tok >= 0)
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	725 COUNT_TOK_AND_RETURN (id_tok);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	726 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	727
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	728 %{
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	729 // Superclass method identifiers.
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	730 %}
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 {IDENT}@{IDENT}{S}* \|
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	733 {IDENT}@{IDENT}.{IDENT}{S}* {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	734 LEXER_DEBUG ("{IDENT}@{IDENT}{S}\|{IDENT}@{IDENT}.{IDENT}{S}");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	735
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	736 int id_tok = handle_superclass_identifier ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	737
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	738 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	739 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	740 lexer_flags.looking_for_object_index = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	741
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	742 COUNT_TOK_AND_RETURN (SUPERCLASSREF);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	743 }
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 // Metaclass query
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	748 %}
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 \?{IDENT}{S}* \|
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	751 \?{IDENT}.{IDENT}{S}* {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	752 LEXER_DEBUG ("\?{IDENT}{S}* \| \?{IDENT}.{IDENT}{S}*");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	753
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	754 int id_tok = handle_meta_identifier ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	755
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	756 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	757 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	758 lexer_flags.looking_for_object_index = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	759
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	760 COUNT_TOK_AND_RETURN (METAQUERY);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	761 }
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 // Function handles and superclass references
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	766 %}
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	767
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	768 "@" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	769 LEXER_DEBUG ("@");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	770
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	771 current_input_column++;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	772
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	773 lexer_flags.quote_is_transpose = false;
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	774 lexer_flags.convert_spaces_to_comma = false;
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	775 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	776 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	777 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	778
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	779 COUNT_TOK_AND_RETURN ('@');
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	780
4342 813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe] jwe parents: 4323 diff changeset	781 }
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 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	784 // 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	785 // 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	786 // 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	787 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	788
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	789 {NL} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	790 LEXER_DEBUG ("{NL}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	791
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	792 input_line_number++;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	793 current_input_column = 1;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	794
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	795 lexer_flags.quote_is_transpose = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	796 lexer_flags.convert_spaces_to_comma = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	797
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	798 if (nesting_level.none ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	799 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	800 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	801 COUNT_TOK_AND_RETURN ('\n');
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	802 }
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	803 else if (nesting_level.is_paren ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	804 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	805 lexer_flags.at_beginning_of_statement = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	806 gripe_matlab_incompatible ("bare newline inside parentheses");
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	807 }
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	808 else if (nesting_level.is_bracket_or_brace ())
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	809 return LEXICAL_ERROR;
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	810 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	811
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	812 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	813 // 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	814 // operator.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	815 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	816
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	817 "'" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	818 LEXER_DEBUG ("'");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	819
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	820 current_input_column++;
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	821 lexer_flags.convert_spaces_to_comma = true;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	822
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	823 if (lexer_flags.quote_is_transpose)
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	824 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	825 do_comma_insert_check ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	826 COUNT_TOK_AND_RETURN (QUOTE);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	827 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	828 else
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	829 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	830 int tok = handle_string ('\'');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	831 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	832 }
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	833 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	834
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	835 %{
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	836 // Double quotes always begin strings.
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	837 %}
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	838
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	839 \" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	840 LEXER_DEBUG ("\"");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	841
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	842 current_input_column++;
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	843 int tok = handle_string ('"');
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	844
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	845 COUNT_TOK_AND_RETURN (tok);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	846 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	847
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	848 %{
8536 de1b944d5306 lex.l: finish previous change John W. Eaton <jwe@octave.org> parents: 8535 diff changeset	849 // Gobble comments.
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	850 %}
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	851
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	852 {CCHAR} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	853 LEXER_DEBUG ("{CCHAR}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	854
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	855 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	856
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	857 xunput (yytext[0], yytext);
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	858
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	859 bool eof = false;
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	860 int tok = process_comment (false, eof);
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	861
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	862 if (eof)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	863 TOK_RETURN (END_OF_INPUT);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	864 else if (tok > 0)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	865 COUNT_TOK_AND_RETURN (tok);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	866 }
440 e27d10f2e573 [project @ 1994-05-30 03:33:37 by jwe] jwe parents: 430 diff changeset	867
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	868 %{
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	869 // Block comments.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	870 %}
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 ^{S}{CCHAR}\{{S}{NL} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	873 LEXER_DEBUG ("^{S}{CCHAR}\\{{S}{NL}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	874
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	875 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	876
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	877 input_line_number++;
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	878 current_input_column = 1;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	879 block_comment_nesting_level++;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	880 promptflag--;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	881
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	882 bool eof = false;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	883 process_comment (true, eof);
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	884 }
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 %{
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	887 // Other operators.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	888 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	889
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	890 ":" { LEXER_DEBUG (":"); BIN_OP_RETURN (':', false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	891
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	892 ".+" { LEXER_DEBUG (".+"); XBIN_OP_RETURN (EPLUS, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	893 ".-" { LEXER_DEBUG (".-"); XBIN_OP_RETURN (EMINUS, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	894 "." { LEXER_DEBUG ("."); BIN_OP_RETURN (EMUL, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	895 "./" { LEXER_DEBUG ("./"); BIN_OP_RETURN (EDIV, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	896 ".\\" { LEXER_DEBUG (".\\"); BIN_OP_RETURN (ELEFTDIV, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	897 ".^" { LEXER_DEBUG (".^"); BIN_OP_RETURN (EPOW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	898 "." { LEXER_DEBUG ("."); XBIN_OP_RETURN (EPOW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	899 ".'" { 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	900 "++" { 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	901 "--" { 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	902 "<=" { 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	903 "==" { 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	904 "~=" { 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	905 "!=" { 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	906 ">=" { 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	907 "&" { 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	908 "\|" { 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	909 "<" { 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	910 ">" { 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	911 "+" { LEXER_DEBUG ("+"); BIN_OP_RETURN ('+', false, false); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	912 "-" { LEXER_DEBUG ("-"); BIN_OP_RETURN ('-', false, false); }
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	913 "" { LEXER_DEBUG (""); BIN_OP_RETURN ('*', false, false); }
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 (LEFTDIV, false, false); }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	916 ";" { LEXER_DEBUG (";"); BIN_OP_RETURN (';', true, true); }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	917 "," { 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	918 "^" { LEXER_DEBUG ("^"); BIN_OP_RETURN (POW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	919 "" { LEXER_DEBUG (""); XBIN_OP_RETURN (POW, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	920 "=" { LEXER_DEBUG ("="); BIN_OP_RETURN ('=', true, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	921 "&&" { 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	922 "\|\|" { 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	923 "<<" { LEXER_DEBUG ("<<"); XBIN_OP_RETURN (LSHIFT, false, false); }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	924 ">>" { 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	925
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	926 {NOT} {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	927 LEXER_DEBUG ("{NOT}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	928
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	929 if (yytext[0] == '~')
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	930 BIN_OP_RETURN (EXPR_NOT, false, false);
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	931 else
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	932 XBIN_OP_RETURN (EXPR_NOT, false, false);
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	933 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	934
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	935 "(" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	936 LEXER_DEBUG ("(");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	937
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	938 // 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	939 // 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	940 // 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	941 // the matching close paren).
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	942
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	943 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	944 (lexer_flags.looking_for_object_index);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	945
4131 597fbc55ea40 [project @ 2002-10-29 17:12:53 by jwe] jwe parents: 4101 diff changeset	946 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	947 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	948 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	949
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	950 nesting_level.paren ();
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	951 promptflag--;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	952
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	953 TOK_RETURN ('(');
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	954 }
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 ")" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	957 LEXER_DEBUG (")");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	958
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	959 nesting_level.remove ();
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	960 current_input_column++;
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	961
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	962 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	963
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	964 lexer_flags.quote_is_transpose = true;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	965 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	966 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	967 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	968
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	969 do_comma_insert_check ();
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	970
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	971 COUNT_TOK_AND_RETURN (')');
967 b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	972 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe] jwe parents: 947 diff changeset	973
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	974 "." {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	975 LEXER_DEBUG (".");
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	976
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	977 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	978 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	979
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	980 TOK_RETURN ('.');
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	981 }
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	982
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	983 "+=" { 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	984 "-=" { 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	985 "=" { 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	986 "/=" { 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	987 "\\=" { 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	988 ".+=" { 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	989 ".-=" { 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	990 ".=" { 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	991 "./=" { 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	992 ".\\=" { 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	993 {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	994 {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	995 "&=" { 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	996 "\|=" { 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	997 "<<=" { 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	998 ">>=" { 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	999
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1000 \{{S}* {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1001 LEXER_DEBUG ("\\{{S}*");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1002
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1003 nesting_level.brace ();
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1004
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1005 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	1006 (lexer_flags.looking_for_object_index);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1007
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1008 current_input_column += yyleng;
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1009 lexer_flags.quote_is_transpose = false;
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1010 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	1011 lexer_flags.looking_for_object_index = false;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1012 lexer_flags.at_beginning_of_statement = false;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1013
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1014 promptflag--;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1015 eat_whitespace ();
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1016
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	1017 lexer_flags.braceflag++;
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1018 BEGIN (MATRIX_START);
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	1019 COUNT_TOK_AND_RETURN ('{');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1020 }
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 "}" {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1023 LEXER_DEBUG ("}");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1024
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1025 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	1026
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1027 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1028 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	1029
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1030 nesting_level.remove ();
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1031
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	1032 TOK_RETURN ('}');
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1033 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1034
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1035 %{
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1036 // Unrecognized input is a lexical error.
968 9351572b7210 [project @ 1994-12-11 21:53:00 by jwe] jwe parents: 967 diff changeset	1037 %}
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1038
2042 31f4f775b8c6 [project @ 1996-03-28 09:06:28 by jwe] jwe parents: 1994 diff changeset	1039 . {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1040 LEXER_DEBUG (".");
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1041
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1042 xunput (yytext[0], yytext);
4248 eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1043
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	1044 int c = text_yyinput ();
4248 eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1045
eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe] jwe parents: 4241 diff changeset	1046 if (c != EOF)
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1047 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1048 current_input_column++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1049
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1050 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	1051 undo_string_escape (static_cast<char> (c)), c,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1052 input_line_number, current_input_column);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1053
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1054 return LEXICAL_ERROR;
4240 8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1055 }
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1056 else
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe] jwe parents: 4238 diff changeset	1057 TOK_RETURN (END_OF_INPUT);
2066 a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe] jwe parents: 2042 diff changeset	1058 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1059
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
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1062 // GAG.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1063 //
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1064 // 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	1065 // that we insert a comma ahead of it.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1066
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	1067 void
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1068 do_comma_insert_check (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1069 {
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	1070 int spc_gobbled = eat_continuation ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	1071
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	1072 int c = text_yyinput ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	1073
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1074 xunput (c, yytext);
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	1075
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	1076 if (spc_gobbled)
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1077 xunput (' ', yytext);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1078
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1079 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	1080 && lexer_flags.bracketflag && c == '[');
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1081 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1082
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1083 // 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	1084 // 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	1085 // doing any parsing.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1086
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1087 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1088 reset_parser (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1089 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1090 // Start off on the right foot.
4323 0990c9b77109 [project @ 2003-02-14 07:36:26 by jwe] jwe parents: 4318 diff changeset	1091 BEGIN (INITIAL);
4318 115bffcecfd3 [project @ 2003-02-13 05:52:16 by jwe] jwe parents: 4264 diff changeset	1092
3883 69b6bd271277 [project @ 2002-04-02 21:05:10 by jwe] jwe parents: 3880 diff changeset	1093 parser_end_of_input = false;
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1094
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1095 while (! symtab_context.empty ())
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1096 symtab_context.pop ();
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1097
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1098 // We do want a prompt by default.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1099 promptflag = 1;
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1100
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1101 // We are not in a block comment.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1102 block_comment_nesting_level = 0;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1103
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	1104 // 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	1105 nesting_level.clear ();
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1106
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1107 // 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	1108 // numbers.
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	1109 while (! token_stack.empty ())
4214 b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1110 {
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1111 delete token_stack.top ();
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1112 token_stack.pop ();
b9317f3973ec [project @ 2002-12-04 04:57:01 by jwe] jwe parents: 4208 diff changeset	1113 }
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1114
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1115 // Can be reset by defining a function.
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1116 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	1117 {
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	1118 current_input_column = 1;
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1119 input_line_number = command_editor::current_command_number ();
985 4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe] jwe parents: 975 diff changeset	1120 }
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1121
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1122 // 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	1123 // input.
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1124 if ((interactive \|\| forced_interactive)
3880 c21ae2c5840f [project @ 2002-03-26 02:23:06 by jwe] jwe parents: 3867 diff changeset	1125 && ! (reading_fcn_file
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	1126 \|\| reading_classdef_file
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1127 \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1128 \|\| get_input_from_eval_string
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1129 \|\| input_from_startup_file))
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1130 yyrestart (stdin);
991 18be848f10a9 [project @ 1994-12-15 06:06:46 by jwe] jwe parents: 985 diff changeset	1131
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1132 // Clear the buffer for help text.
4426 51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1133 while (! help_buf.empty ())
51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1134 help_buf.pop ();
1755 3a9462b655f1 [project @ 1996-01-22 04:47:22 by jwe] jwe parents: 1740 diff changeset	1135
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1136 // Reset other flags.
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	1137 lexer_flags.init ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1138 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1139
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1140 static void
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1141 display_character (char c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1142 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1143 if (isgraph (c))
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1144 std::cerr << c;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1145 else
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1146 switch (c)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1147 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1148 case 0:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1149 std::cerr << "NUL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1150 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1151
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1152 case 1:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1153 std::cerr << "SOH";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1154 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1155
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1156 case 2:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1157 std::cerr << "STX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1158 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1159
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1160 case 3:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1161 std::cerr << "ETX";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1162 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1163
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1164 case 4:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1165 std::cerr << "EOT";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1166 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1167
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1168 case 5:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1169 std::cerr << "ENQ";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1170 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1171
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1172 case 6:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1173 std::cerr << "ACK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1174 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1175
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1176 case 7:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1177 std::cerr << "\\a";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1178 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1179
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1180 case 8:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1181 std::cerr << "\\b";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1182 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1183
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1184 case 9:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1185 std::cerr << "\\t";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1186 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1187
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1188 case 10:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1189 std::cerr << "\\n";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1190 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1191
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1192 case 11:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1193 std::cerr << "\\v";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1194 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1195
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1196 case 12:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1197 std::cerr << "\\f";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1198 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1199
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1200 case 13:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1201 std::cerr << "\\r";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1202 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1203
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1204 case 14:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1205 std::cerr << "SO";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1206 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1207
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1208 case 15:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1209 std::cerr << "SI";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1210 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1211
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1212 case 16:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1213 std::cerr << "DLE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1214 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1215
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1216 case 17:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1217 std::cerr << "DC1";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1218 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1219
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1220 case 18:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1221 std::cerr << "DC2";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1222 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1223
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1224 case 19:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1225 std::cerr << "DC3";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1226 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1227
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1228 case 20:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1229 std::cerr << "DC4";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1230 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1231
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1232 case 21:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1233 std::cerr << "NAK";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1234 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1235
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1236 case 22:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1237 std::cerr << "SYN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1238 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1239
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1240 case 23:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1241 std::cerr << "ETB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1242 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1243
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1244 case 24:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1245 std::cerr << "CAN";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1246 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1247
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1248 case 25:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1249 std::cerr << "EM";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1250 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1251
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1252 case 26:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1253 std::cerr << "SUB";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1254 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1255
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1256 case 27:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1257 std::cerr << "ESC";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1258 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1259
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1260 case 28:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1261 std::cerr << "FS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1262 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1263
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1264 case 29:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1265 std::cerr << "GS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1266 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1267
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1268 case 30:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1269 std::cerr << "RS";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1270 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1271
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1272 case 31:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1273 std::cerr << "US";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1274 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1275
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1276 case 32:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1277 std::cerr << "SPACE";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1278 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1279
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1280 case 127:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1281 std::cerr << "DEL";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1282 break;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1283 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1284 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1285
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1286 static int
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1287 text_yyinput (void)
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1288 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1289 int c = yyinput ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1290
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1291 if (lexer_debug_flag)
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1292 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1293 std::cerr << "I: ";
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1294 display_character (c);
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1295 std::cerr << std::endl;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1296 }
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 // 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	1299
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1300 if (c == '\r')
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1301 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1302 c = yyinput ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1303
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1304 if (lexer_debug_flag)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1305 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1306 std::cerr << "I: ";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1307 display_character (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1308 std::cerr << std::endl;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1309 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1310
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1311 if (c != '\n')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1312 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1313 xunput (c, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1314 c = '\n';
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1315 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1316 }
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 if (c == '\n')
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1319 input_line_number++;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1320
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1321 return c;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1322 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1323
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1324 static void
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1325 xunput (char c, char *buf)
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1326 {
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1327 if (lexer_debug_flag)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1328 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1329 std::cerr << "U: ";
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1330 display_character (c);
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1331 std::cerr << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1332 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1333
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1334 if (c == '\n')
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1335 input_line_number--;
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1336
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1337 yyunput (c, buf);
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1338 }
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1339
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1340 // 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	1341 // really looking at.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1342
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1343 static void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1344 fixup_column_count (char *s)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1345 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1346 char c;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1347 while ((c = *s++) != '\0')
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1348 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1349 if (c == '\n')
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1350 {
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1351 input_line_number++;
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1352 current_input_column = 1;
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1353 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1354 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1355 current_input_column++;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1356 }
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
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1359 // 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	1360
3332 7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe] jwe parents: 3263 diff changeset	1361 int
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1362 yywrap (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1363 {
287 6027a905fc06 [project @ 1994-01-13 01:41:00 by jwe] jwe parents: 246 diff changeset	1364 return 1;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1365 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1366
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1367 // Tell us all what the current buffer is.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1368
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1369 YY_BUFFER_STATE
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1370 current_buffer (void)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1371 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1372 return YY_CURRENT_BUFFER;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1373 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1374
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1375 // Create a new buffer.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1376
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1377 YY_BUFFER_STATE
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1378 create_buffer (FILE *f)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1379 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1380 return yy_create_buffer (f, YY_BUF_SIZE);
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1381 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1382
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1383 // Start reading a new buffer.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1384
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1385 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1386 switch_to_buffer (YY_BUFFER_STATE buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1387 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1388 yy_switch_to_buffer (buf);
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1389 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1390
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1391 // Delete a buffer.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1392
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1393 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1394 delete_buffer (YY_BUFFER_STATE buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1395 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1396 yy_delete_buffer (buf);
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1397 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1398
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1399 // Restore a buffer (for unwind-prot).
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1400
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1401 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1402 restore_input_buffer (void *buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1403 {
2861 6dcb8e1c9bb2 [project @ 1997-04-13 23:21:38 by jwe] jwe parents: 2857 diff changeset	1404 switch_to_buffer (static_cast<YY_BUFFER_STATE> (buf));
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1405 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1406
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1407 // Delete a buffer (for unwind-prot).
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1408
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1409 void
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1410 delete_input_buffer (void *buf)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1411 {
2861 6dcb8e1c9bb2 [project @ 1997-04-13 23:21:38 by jwe] jwe parents: 2857 diff changeset	1412 delete_buffer (static_cast<YY_BUFFER_STATE> (buf));
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1413 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1414
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1415 static bool
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1416 inside_any_object_index (void)
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1417 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1418 bool retval = false;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1419
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1420 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	1421 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	1422 {
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1423 if (*i)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1424 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1425 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1426 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1427 }
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1428 }
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 return retval;
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1431 }
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	1432
4238 a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	1433 // 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	1434
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1435 static int
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	1436 is_keyword_token (const std::string& s)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1437 {
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	1438 int l = input_line_number;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	1439 int c = current_input_column;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	1440
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	1441 int len = s.length ();
922 708827b941b4 [project @ 1994-11-14 22:14:13 by jwe] jwe parents: 916 diff changeset	1442
5088 7830f271a53f [project @ 2004-12-01 19:54:45 by jwe] jwe parents: 5035 diff changeset	1443 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	1444
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1445 if (kw)
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	1446 {
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1447 yylval.tok_val = 0;
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1448
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1449 switch (kw->kw_id)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1450 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1451 case break_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1452 case catch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1453 case continue_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1454 case else_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1455 case otherwise_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1456 case return_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1457 case unwind_protect_cleanup_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1458 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1459 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1460
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1461 case case_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1462 case elseif_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1463 case global_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1464 case static_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1465 case until_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1466 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1467
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1468 case end_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1469 if (! reading_classdef_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1470 && (inside_any_object_index ()
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1471 \|\| (lexer_flags.defining_func
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1472 && ! (lexer_flags.looking_at_return_list
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1473 \|\| lexer_flags.parsed_function_name))))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1474 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1475
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1476 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	1477 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1478 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1479
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1480 case end_try_catch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1481 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	1482 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1483 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1484
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1485 case end_unwind_protect_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1486 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	1487 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1488 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1489
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1490 case endfor_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1491 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	1492 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1493 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1494
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1495 case endfunction_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1496 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	1497 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1498 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1499
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1500 case endif_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1501 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	1502 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1503 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1504
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1505 case endswitch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1506 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	1507 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1508 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1509
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1510 case endwhile_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1511 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	1512 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1513 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1514
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1515 case endclassdef_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1516 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	1517 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1518 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1519
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1520 case endevents_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1521 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	1522 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1523 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1524
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1525 case endmethods_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1526 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	1527 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1528 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1529
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1530 case endproperties_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1531 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	1532 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1533 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1534
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1535 case for_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1536 case while_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1537 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1538 lexer_flags.looping++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1539 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1540
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1541 case do_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1542 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1543 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1544 lexer_flags.looping++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1545 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1546
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1547 case try_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1548 case unwind_protect_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1549 lexer_flags.at_beginning_of_statement = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1550 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1551 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1552
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1553 case if_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1554 case switch_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1555 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1556 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1557
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1558 case get_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1559 case set_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1560 // 'get' and 'set' are keywords in classdef method
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1561 // declarations.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1562 if (! lexer_flags.maybe_classdef_get_set_method)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1563 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1564 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1565
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1566 case properties_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1567 case methods_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1568 case events_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1569 // 'properties', 'methods' and 'events' are keywords for
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1570 // classdef blocks.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1571 if (! lexer_flags.parsing_classdef)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1572 return 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1573 // fall through ...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1574
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1575 case classdef_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1576 // 'classdef' is always a keyword.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1577 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1578 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1579
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1580 case function_kw:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1581 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1582
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1583 lexer_flags.defining_func = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1584 lexer_flags.parsed_function_name = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1585
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1586 if (! (reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1587 \|\| reading_classdef_file))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1588 input_line_number = 1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1589 break;
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1590
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1591 case magic_file_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1592 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1593 if ((reading_fcn_file \|\| reading_script_file
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1594 \|\| reading_classdef_file)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1595 && ! curr_fcn_file_full_name.empty ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1596 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	1597 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1598 yylval.tok_val = new token ("stdin", l, c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1599 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1600 break;
3174 390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1601
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe] jwe parents: 3165 diff changeset	1602 case magic_line_kw:
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1603 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	1604 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1605
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1606 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1607 panic_impossible ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1608 }
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1609
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1610 if (! yylval.tok_val)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1611 yylval.tok_val = new token (l, c);
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1612
476 de9de43ad21f [project @ 1994-06-24 16:17:47 by jwe] jwe parents: 446 diff changeset	1613 token_stack.push (yylval.tok_val);
1497 48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1614
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe] jwe parents: 1489 diff changeset	1615 return kw->tok;
143 7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe] jwe parents: 120 diff changeset	1616 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1617
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1618 return 0;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1619 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1620
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1621 static bool
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	1622 is_variable (const std::string& name)
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1623 {
8001 ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	1624 return (symbol_table::is_variable (name)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1625 \|\| (lexer_flags.pending_local_variables.find (name)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1626 != lexer_flags.pending_local_variables.end ()));
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1627 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	1628
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1629 static std::string
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1630 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	1631 {
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1632 std::string buf;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1633
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1634 bool at_bol = true;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1635 bool look_for_marker = false;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1636
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1637 bool warned_incompatible = false;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1638
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1639 int c = 0;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1640
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1641 while ((c = reader.getc ()) != EOF)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1642 {
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1643 current_input_column++;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1644
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1645 if (look_for_marker)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1646 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1647 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1648 look_for_marker = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1649
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1650 if (c == '{' \|\| c == '}')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1651 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1652 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	1653
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1654 int type = c;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1655
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1656 bool done = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1657
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1658 while ((c = reader.getc ()) != EOF && ! done)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1659 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1660 current_input_column++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1661
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1662 switch (c)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1663 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1664 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1665 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1666 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1667 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1668
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1669 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1670 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1671 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1672 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1673 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1674
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1675 if (type == '{')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1676 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1677 block_comment_nesting_level++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1678 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1679 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1680 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1681 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1682 block_comment_nesting_level--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1683 promptflag++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1684
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1685 if (block_comment_nesting_level == 0)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1686 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1687 buf += grab_comment_block (reader, true, eof);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1688
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1689 return buf;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1690 }
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 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1694
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1695 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1696 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1697 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1698 buf += tmp_buf;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1699 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1700 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1701 }
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 }
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1705
7898 cce16b4e0970 lex.l (grab_block_comment): Use parens around \|\| expression within && expression John W. Eaton <jwe@octave.org> parents: 7728 diff changeset	1706 if (at_bol && (c == '%' \|\| c == '#'))
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1707 {
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1708 if (c == '#' && ! warned_incompatible)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1709 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1710 warned_incompatible = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1711 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1712 }
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 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1715 look_for_marker = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1716 }
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1717 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1718 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1719 buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1720
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1721 if (c == '\n')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1722 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1723 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1724 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1725 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1726 }
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1727 }
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 if (c == EOF)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1730 eof = true;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1731
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1732 return buf;
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1733 }
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1734
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1735 std::string
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1736 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	1737 bool& eof)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1738 {
4426 51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1739 std::string buf;
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1740
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1741 // 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	1742 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	1743
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1744 // 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	1745 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	1746
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1747 bool warned_incompatible = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	1748
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1749 int c = 0;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1750
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1751 while ((c = reader.getc ()) != EOF)
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1752 {
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1753 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	1754
2300 9484969866d2 [project @ 1996-06-24 07:13:26 by jwe] jwe parents: 2200 diff changeset	1755 if (begin_comment)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1756 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1757 if (c == '%' \|\| c == '#')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1758 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1759 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1760 continue;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1761 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1762 else if (at_bol && c == '{')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1763 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1764 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	1765
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1766 bool done = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1767
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1768 while ((c = reader.getc ()) != EOF && ! done)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1769 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1770 current_input_column++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1771
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1772 switch (c)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1773 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1774 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1775 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1776 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1777 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1778
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1779 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1780 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1781 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1782 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1783 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1784
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1785 block_comment_nesting_level++;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1786 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1787
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1788 buf += grab_block_comment (reader, eof);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1789
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1790 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1791
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1792 if (eof)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1793 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1794 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1795 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1796
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1797 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1798 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1799 tmp_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1800 buf += tmp_buf;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1801 done = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1802 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1803 }
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 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1807 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1808 at_bol = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1809 begin_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1810 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1811 }
2300 9484969866d2 [project @ 1996-06-24 07:13:26 by jwe] jwe parents: 2200 diff changeset	1812
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1813 if (in_comment)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1814 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1815 buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1816
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1817 if (c == '\n')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1818 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1819 at_bol = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1820 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1821 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1822
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1823 // FIXME -- bailing out here prevents things like
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1824 //
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1825 // octave> # comment
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1826 // octave> x = 1
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1827 //
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1828 // from failing at the command line, while still
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1829 // allowing blocks of comments to be grabbed properly
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1830 // 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	1831 // 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	1832 // 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	1833 // better way of collecting these comments...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1834 if (! (reading_fcn_file \|\| reading_script_file))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1835 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1836 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1837 }
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1838 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1839 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1840 switch (c)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1841 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1842 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1843 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1844 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1845
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1846 case '#':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1847 if (! warned_incompatible)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1848 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1849 warned_incompatible = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1850 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1851 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1852 // fall through...
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1853
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1854 case '%':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1855 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1856 begin_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1857 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1858
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1859 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1860 current_input_column--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1861 reader.ungetc (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1862 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1863 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1864 }
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1865 }
991 18be848f10a9 [project @ 1994-12-15 06:06:46 by jwe] jwe parents: 985 diff changeset	1866
1019 7a632c749c67 [project @ 1995-01-09 18:58:33 by jwe] jwe parents: 1009 diff changeset	1867 done:
991 18be848f10a9 [project @ 1994-12-15 06:06:46 by jwe] jwe parents: 985 diff changeset	1868
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1869 if (c == EOF)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1870 eof = true;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1871
4426 51a0dcde8778 [project @ 2003-06-13 19:16:37 by jwe] jwe parents: 4410 diff changeset	1872 return buf;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1873 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1874
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1875 class
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1876 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	1877 {
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1878 public:
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1879 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	1880
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	1881 int getc (void) { return ::text_yyinput (); }
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1882 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	1883
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1884 private:
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1885 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	1886 };
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1887
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1888 static int
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1889 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	1890 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1891 eof = false;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1892
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1893 std::string help_txt;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1894
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1895 if (! help_buf.empty ())
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1896 help_txt = help_buf.top ();
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1897
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1898 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	1899
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1900 // 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	1901 // initially looking at a block comment.
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1902
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1903 std::string txt = start_in_block
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1904 ? grab_block_comment (flex_reader, eof)
74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	1905 : 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	1906
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1907 if (lexer_debug_flag)
8536 de1b944d5306 lex.l: finish previous change John W. Eaton <jwe@octave.org> parents: 8535 diff changeset	1908 std::cerr << "C: " << txt << std::endl;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	1909
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1910 if (help_txt.empty () && nesting_level.none ())
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1911 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1912 if (! help_buf.empty ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1913 help_buf.pop ();
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1914
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1915 help_buf.push (txt);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1916 }
7720 4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1917
4e2eafef689c unify comment and help text processing in lex.l and parse.y John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	1918 octave_comment_buffer::append (txt);
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1919
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1920 current_input_column = 1;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1921 lexer_flags.quote_is_transpose = false;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1922 lexer_flags.convert_spaces_to_comma = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1923 lexer_flags.at_beginning_of_statement = true;
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1924
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1925 if (YY_START == COMMAND_START)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1926 BEGIN (INITIAL);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1927
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1928 if (nesting_level.none ())
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	1929 return '\n';
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1930 else if (nesting_level.is_bracket_or_brace ())
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1931 return ';';
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1932 else
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1933 return 0;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1934 }
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	1935
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1936 // 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	1937 // string.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1938
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1939 static bool
2804 eedc2f3f61f7 [project @ 1997-03-11 04:34:50 by jwe] jwe parents: 2764 diff changeset	1940 match_any (char c, const char *s)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1941 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1942 char tmp;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1943 while ((tmp = *s++) != '\0')
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1944 {
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1945 if (c == tmp)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	1946 return true;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1947 }
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1948 return false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1949 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1950
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1951 // Given information about the spacing surrounding an operator,
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1952 // 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	1953 // operator. For example,
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1954 //
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	1955 // [ 1 + 2 ] or [ 1+ 2] or [ 1+2 ] ==> binary
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	1956 //
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	1957 // [ 1 +2 ] ==> unary
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1958
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1959 static bool
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1960 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	1961 {
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1962 bool spc_next = (next_char == ' ' \|\| next_char == '\t');
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1963
608 a675e03540dd [project @ 1994-08-13 23:50:19 by jwe] jwe parents: 584 diff changeset	1964 return ((spc_prev && spc_next) \|\| ! spc_prev);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1965 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1966
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1967 // 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	1968 // replaced by a single LF.
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1969
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1970 static bool
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1971 next_token_is_sep_op (void)
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1972 {
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1973 bool retval = false;
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1974
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	1975 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	1976
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 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	1978
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	1979 xunput (c, yytext);
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1980
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1981 return retval;
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1982 }
7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	1983
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	1984 // 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	1985 // 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	1986
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1987 static bool
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1988 next_token_is_postfix_unary_op (bool spc_prev)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1989 {
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	1990 bool un_op = false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1991
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	1992 int c0 = text_yyinput ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1993
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1994 if (c0 == '\'' && ! spc_prev)
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1995 {
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1996 un_op = true;
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1997 }
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1998 else if (c0 == '.')
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	1999 {
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	2000 int c1 = text_yyinput ();
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2001 un_op = (c1 == '\'');
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2002 xunput (c1, yytext);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2003 }
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2004 else if (c0 == '+')
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2005 {
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	2006 int c1 = text_yyinput ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2007 un_op = (c1 == '+');
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2008 xunput (c1, yytext);
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2009 }
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2010 else if (c0 == '-')
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2011 {
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	2012 int c1 = text_yyinput ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2013 un_op = (c1 == '-');
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2014 xunput (c1, yytext);
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2015 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2016
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2017 xunput (c0, yytext);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2018
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2019 return un_op;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2020 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2021
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2022 // 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	2023 // operator.
1521 b3e4ca4f75a0 [project @ 1995-10-04 05:10:36 by jwe] jwe parents: 1520 diff changeset	2024 //
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2025 // 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	2026 // 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	2027 // 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	2028 // 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	2029 //
3779 3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2030 // 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	2031 // (e.g., the characters '[' 'a' ' ' '+' '\' LFD 'b' ']') will be
3001e15555e9 [project @ 2001-02-07 04:47:51 by jwe] jwe parents: 3774 diff changeset	2032 // parsed as a binary operator.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2033
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2034 static bool
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2035 next_token_is_bin_op (bool spc_prev)
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2036 {
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2037 bool bin_op = false;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2038
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	2039 int c0 = text_yyinput ();
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2040
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2041 switch (c0)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2042 {
777 a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2043 case '+':
a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2044 case '-':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2045 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2046 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2047
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2048 switch (c1)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2049 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2050 case '+':
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 // Unary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2053 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2054
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2055 case '=':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2056 // Binary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2057 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2058 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2059
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2060 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2061 // Could be either, spacing matters.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2062 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	2063 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2064 }
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 xunput (c1, yytext);
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2067 }
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2068 break;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2069
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2070 case ':':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2071 case '/':
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 '^':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2074 // Always a binary op (may also include /=, \=, and ^=).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2075 bin_op = true;
1276 cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2076 break;
cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2077
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2078 // .+ .- ./ .\ .^ .* .**
1554 b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2079 case '.':
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2080 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2081 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2082
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2083 if (match_any (c1, "+-/\\^*"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2084 // Always a binary op (may also include .+=, .-=, ./=, ...).
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2085 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2086 else if (! isdigit (c1) && c1 != ' ' && c1 != '\t' && c1 != '.')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2087 // A structure element reference is a binary op.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2088 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2089
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2090 xunput (c1, yytext);
1554 b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2091 }
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2092 break;
b1ba1894bccc [project @ 1995-10-09 13:31:42 by jwe] jwe parents: 1521 diff changeset	2093
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2094 // = == & && \| \|\| * **
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2095 case '=':
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2096 case '&':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2097 case '\|':
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2098 case '*':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2099 // Always a binary op (may also include ==, &&, \|\|, **).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2100 bin_op = true;
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2101 break;
a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2102
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2103 // < <= <> > >=
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2104 case '<':
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2105 case '>':
3774 de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2106 // Always a binary op (may also include <=, <>, >=).
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2107 bin_op = true;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2108 break;
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2109
de61a7ba91f2 [project @ 2001-02-05 16:54:04 by jwe] jwe parents: 3698 diff changeset	2110 // ~= !=
777 a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2111 case '~':
a2f9d3fd720c [project @ 1994-10-07 14:01:53 by jwe] jwe parents: 767 diff changeset	2112 case '!':
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2113 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2114 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2115
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2116 // ~ and ! can be unary ops, so require following =.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2117 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2118 bin_op = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2119
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2120 xunput (c1, yytext);
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2121 }
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2122 break;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2123
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2124 default:
1276 cbdf7db98554 [project @ 1995-04-24 15:31:24 by jwe] jwe parents: 1273 diff changeset	2125 break;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2126 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2127
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2128 xunput (c0, yytext);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2129
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2130 return bin_op;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2131 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2132
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2133 // Used to delete trailing white space from tokens.
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	2134
3536 e8fbc8c3d6d9 [project @ 2000-02-02 12:01:00 by jwe] jwe parents: 3523 diff changeset	2135 static std::string
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2136 strip_trailing_whitespace (char *s)
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2137 {
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	2138 std::string retval = s;
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2139
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	2140 size_t pos = retval.find_first_of (" \t");
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2141
8021 85184151822e fix typo in NPOS change John W. Eaton <jwe@octave.org> parents: 8019 diff changeset	2142 if (pos != std::string::npos)
1823 5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe] jwe parents: 1755 diff changeset	2143 retval.resize (pos);
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2144
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2145 return retval;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2146 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2147
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2148 // 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	2149
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2150 static void
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2151 scan_for_comments (const char *text)
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2152 {
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2153 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2154
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2155 bool in_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2156 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2157
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2158 int len = strlen (text);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2159 int i = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2160
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2161 while (i < len)
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2162 {
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2163 char c = text[i++];
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2164
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2165 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2166 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2167 case '%':
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 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2170 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2171 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2172 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2173 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2174 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2175 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2176 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2177 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2178 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2179 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2180 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2181
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2182 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2183 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2184 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2185 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2186 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2187 comment_buf.resize (0);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2188 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2189 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2190 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2191 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2192
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2193 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2194 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2195 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2196 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2197 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2198 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2199 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2200 }
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2201 }
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 if (! comment_buf.empty ())
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2204 octave_comment_buffer::append (comment_buf);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2205 }
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2206
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2207 // Discard whitespace, including comments and continuations.
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2208 //
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2209 // Return value is logical OR of the following values:
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2210 //
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2211 // ATE_NOTHING : no spaces to eat
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2212 // ATE_SPACE_OR_TAB : space or tab in input
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2213 // ATE_NEWLINE : bare new line in input
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2214
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2215 // 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	2216
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2217 static yum_yum
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2218 eat_whitespace (void)
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2219 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2220 yum_yum retval = ATE_NOTHING;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2221
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2222 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2223
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2224 bool in_comment = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2225 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2226
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2227 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2228
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	2229 while ((c = text_yyinput ()) != EOF)
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2230 {
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2231 current_input_column++;
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2232
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2233 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2234 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2235 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2236 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2237 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2238 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2239 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2240 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2241 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2242 retval \|= ATE_SPACE_OR_TAB;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2243 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2244
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2245 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2246 retval \|= ATE_NEWLINE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2247 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2248 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2249 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2250 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2251 comment_buf.resize (0);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2252 in_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2253 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2254 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2255 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2256 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2257
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2258 case '#':
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 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2261 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2262 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2263 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2264 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2265 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2266 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2267 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2268 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2269 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2270 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2271 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2272
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2273 case '.':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2274 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2275 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2276 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2277 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2278 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2279 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2280 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2281 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2282 if (have_ellipsis_continuation ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2283 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2284 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2285 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2286 }
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 case '\\':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2289 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2290 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2291 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2292 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2293 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2294 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2295 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2296 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2297 if (have_continuation ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2298 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2299 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2300 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2301 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2302
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2303 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2304 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2305 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2306 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2307 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2308 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2309 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2310 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2311 goto done;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2312 }
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2313 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2314
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2315 if (! comment_buf.empty ())
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2316 octave_comment_buffer::append (comment_buf);
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2317
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2318 done:
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2319 xunput (c, yytext);
1082 d1a1608f1028 [project @ 1995-01-27 22:26:33 by jwe] jwe parents: 1072 diff changeset	2320 current_input_column--;
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2321 return retval;
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2322 }
e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2323
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2324 static inline bool
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2325 looks_like_hex (const char *s, int len)
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2326 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2327 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	2328 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2329
975 e7165acbf96f [project @ 1994-12-12 20:30:19 by jwe] jwe parents: 973 diff changeset	2330 static void
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2331 handle_number (void)
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2332 {
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2333 double value = 0.0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2334 int nread = 0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2335
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2336 if (looks_like_hex (yytext, strlen (yytext)))
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2337 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2338 unsigned long ival;
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2339
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2340 nread = sscanf (yytext, "%lx", &ival);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2341
3220 3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2342 value = static_cast<double> (ival);
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2343 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe] jwe parents: 3208 diff changeset	2344 else
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2345 {
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2346 char *tmp = strsave (yytext);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2347
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2348 char *idx = strpbrk (tmp, "Dd");
2621 337a09dd1c06 [project @ 1997-01-24 21:49:41 by jwe] jwe parents: 2614 diff changeset	2349
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2350 if (idx)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2351 *idx = 'e';
3598 0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2352
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2353 nread = sscanf (tmp, "%lf", &value);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2354
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2355 delete [] tmp;
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe] jwe parents: 3575 diff changeset	2356 }
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2357
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2358 // 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	2359
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2360 assert (nread == 1);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2361
3988 9a73d0e7e737 [project @ 2002-07-12 19:25:04 by jwe] jwe parents: 3985 diff changeset	2362 lexer_flags.quote_is_transpose = true;
9a73d0e7e737 [project @ 2002-07-12 19:25:04 by jwe] jwe parents: 3985 diff changeset	2363 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	2364 lexer_flags.looking_for_object_index = true;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2365 lexer_flags.at_beginning_of_statement = false;
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2366
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2367 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	2368 current_input_column);
972 3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2369
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2370 token_stack.push (yylval.tok_val);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2371
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2372 current_input_column += yyleng;
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2373
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2374 do_comma_insert_check ();
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2375 }
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe] jwe parents: 971 diff changeset	2376
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2377 // 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	2378 // 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	2379 // and including the new line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2380 //
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2381 // 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	2382 // 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	2383 // If non-whitespace characters are found before comment
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2384 // characters, return 0. Otherwise, return 1.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2385
7723 74f5e0c7de9e first pass at handling block comments John W. Eaton <jwe@octave.org> parents: 7722 diff changeset	2386 // 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	2387
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2388 static bool
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2389 have_continuation (bool trailing_comments_ok)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2390 {
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2391 std::ostringstream buf;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2392
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2393 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2394
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2395 bool in_comment = false;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2396 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2397
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2398 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2399
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	2400 while ((c = text_yyinput ()) != EOF)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2401 {
3802 4f1a26a730fd [project @ 2001-02-26 20:26:14 by jwe] jwe parents: 3796 diff changeset	2402 buf << static_cast<char> (c);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2403
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2404 switch (c)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2405 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2406 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2407 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2408 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2409 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2410 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2411 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2412 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2413 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2414
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2415 case '%':
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 if (trailing_comments_ok)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2418 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2419 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2420 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2421 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2422 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2423 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2424 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2425 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2426 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2427 in_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2428 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2429 }
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 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2432 goto cleanup;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2433 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2434
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2435 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2436 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2437 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2438 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2439 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2440 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2441 current_input_column = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2442 promptflag--;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2443 gripe_matlab_incompatible_continuation ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2444 return true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2445
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2446 default:
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2447 if (in_comment)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2448 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2449 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2450 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2451 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2452 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2453 goto cleanup;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2454 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2455 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2456 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2457
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2458 xunput (c, yytext);
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2459 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2460
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2461 cleanup:
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2462
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2463 std::string s = buf.str ();
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2464
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2465 int len = s.length ();
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 4037 diff changeset	2466 while (len--)
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2467 xunput (s[len], yytext);
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2468
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2469 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2470 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2471
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2472 // 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	2473 // 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	2474 // line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2475
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2476 static bool
3096 ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe] jwe parents: 3079 diff changeset	2477 have_ellipsis_continuation (bool trailing_comments_ok)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2478 {
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	2479 char c1 = text_yyinput ();
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2480 if (c1 == '.')
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2481 {
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	2482 char c2 = text_yyinput ();
1091 54abf1b3a8e9 [project @ 1995-02-02 00:30:14 by jwe] jwe parents: 1088 diff changeset	2483 if (c2 == '.' && have_continuation (trailing_comments_ok))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2484 return true;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2485 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2486 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2487 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2488 xunput (c1, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2489 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2490 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2491 else
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2492 xunput (c1, yytext);
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2493
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2494 return false;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2495 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2496
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2497 // 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	2498 // whitespace on the next line.
1088 0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2499 //
0491f3433f66 [project @ 1995-02-01 21:43:25 by jwe] jwe parents: 1082 diff changeset	2500 // 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	2501
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2502 static yum_yum
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2503 eat_continuation (void)
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2504 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2505 int retval = ATE_NOTHING;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2506
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	2507 int c = text_yyinput ();
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3598 diff changeset	2508
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2509 if ((c == '.' && have_ellipsis_continuation ())
3105 f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe] jwe parents: 3103 diff changeset	2510 \|\| (c == '\\' && have_continuation ()))
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2511 retval = eat_whitespace ();
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2512 else
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2513 xunput (c, yytext);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2514
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2515 return retval;
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2516 }
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2517
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2518 static int
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2519 handle_string (char delim)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2520 {
5765 7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe] jwe parents: 5615 diff changeset	2521 std::ostringstream buf;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2522
3805 44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2523 int bos_line = input_line_number;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2524 int bos_col = current_input_column;
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe] jwe parents: 3802 diff changeset	2525
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2526 int c;
1031 59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe] jwe parents: 1019 diff changeset	2527 int escape_pending = 0;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2528
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	2529 while ((c = text_yyinput ()) != EOF)
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2530 {
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2531 current_input_column++;
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2532
3105 f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe] jwe parents: 3103 diff changeset	2533 if (c == '\\')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2534 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2535 if (delim == '\'' \|\| escape_pending)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2536 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2537 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2538 escape_pending = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2539 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2540 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2541 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2542 if (have_continuation (false))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2543 escape_pending = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2544 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2545 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2546 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2547 escape_pending = 1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2548 }
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 continue;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2551 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2552 else if (c == '.')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2553 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2554 if (delim == '\'' \|\| ! have_ellipsis_continuation (false))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2555 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2556 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2557 else if (c == '\n')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2558 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2559 error ("unterminated string constant");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2560 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2561 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2562 else if (c == delim)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2563 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2564 if (escape_pending)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2565 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2566 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2567 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2568 c = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2569 if (c == delim)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2570 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2571 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2572 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2573 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2574 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2575 std::string s;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2576 xunput (c, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2577
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2578 if (delim == '\'')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2579 s = buf.str ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2580 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2581 s = do_string_escapes (buf.str ());
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2582
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2583 lexer_flags.quote_is_transpose = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2584 lexer_flags.convert_spaces_to_comma = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2585
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2586 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	2587 token_stack.push (yylval.tok_val);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2588
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2589 if (delim == '"')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2590 gripe_matlab_incompatible ("\" used as string delimiter");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2591 else if (delim == '\'')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2592 gripe_single_quote_string ();
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	2593
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2594 lexer_flags.looking_for_object_index = true;
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2595 lexer_flags.at_beginning_of_statement = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2596
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2597 return delim == '"' ? DQ_STRING : SQ_STRING;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2598 }
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 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2601 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2602 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2603 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2604 }
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2605
1031 59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe] jwe parents: 1019 diff changeset	2606 escape_pending = 0;
973 46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2607 }
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 return LEXICAL_ERROR;
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2610 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe] jwe parents: 972 diff changeset	2611
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2612 static bool
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2613 next_token_is_assign_op (void)
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2614 {
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2615 bool retval = false;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2616
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	2617 int c0 = text_yyinput ();
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2618
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2619 switch (c0)
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2620 {
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2621 case '=':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2622 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2623 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2624 xunput (c1, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2625 if (c1 != '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2626 retval = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2627 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2628 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2629
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2630 case '+':
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 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2638 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2639 xunput (c1, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2640 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2641 retval = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2642 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2643 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2644
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2645 case '.':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2646 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2647 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2648 if (match_any (c1, "+-*/\\"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2649 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2650 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2651 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2652 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2653 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2654 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2655 xunput (c1, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2656 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2657 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2658
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2659 case '>':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2660 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2661 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2662 if (c1 == '>')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2663 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2664 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2665 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2666 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2667 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2668 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2669 xunput (c1, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2670 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2671 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2672
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2673 case '<':
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2674 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2675 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2676 if (c1 == '<')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2677 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2678 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2679 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2680 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2681 retval = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2682 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2683 xunput (c1, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2684 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2685 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2686
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2687 default:
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2688 break;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2689 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2690
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2691 xunput (c0, yytext);
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2692
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2693 return retval;
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2694 }
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2695
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2696 static bool
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2697 next_token_is_index_op (void)
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2698 {
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	2699 int c = text_yyinput ();
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2700 xunput (c, yytext);
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2701 return c == '(' \|\| c == '{';
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2702 }
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2703
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2704 static int
d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2705 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	2706 {
4612 d44675070f1a [project @ 2003-11-14 19:49:56 by jwe] jwe parents: 4608 diff changeset	2707 int retval = bracket_type;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2708
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2709 if (! nesting_level.none ())
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2710 {
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	2711 nesting_level.remove ();
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2712
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2713 if (bracket_type == ']')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2714 lexer_flags.bracketflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2715 else if (bracket_type == '}')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2716 lexer_flags.braceflag--;
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2717 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2718 panic_impossible ();
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2719 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2720
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2721 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	2722 BEGIN (INITIAL);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	2723
4608 22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2724 if (bracket_type == ']'
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2725 && next_token_is_assign_op ()
22ca4cc02525 [project @ 2003-11-14 03:55:04 by jwe] jwe parents: 4476 diff changeset	2726 && ! lexer_flags.looking_at_return_list)
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2727 {
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2728 retval = CLOSE_BRACE;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2729 }
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2730 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	2731 && lexer_flags.convert_spaces_to_comma
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2732 && (nesting_level.is_bracket ()
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2733 \|\| (nesting_level.is_brace ()
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2734 && ! lexer_flags.looking_at_object_index.front ())))
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2735 {
4633 d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2736 bool index_op = next_token_is_index_op ();
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2737
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2738 // 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	2739 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2740 // [x{i}{j}] or [x{i}(j)]
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2741 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2742 // but do if we are looking at
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2743 //
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2744 // [x{i} {j}] or [x{i} (j)]
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2745
d95dd6ae89fd [project @ 2003-11-19 18:32:50 by jwe] jwe parents: 4613 diff changeset	2746 if (spc_gobbled \|\| ! (bracket_type == '}' && index_op))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2747 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2748 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	2749
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2750 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	2751
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2752 bool sep_op = next_token_is_sep_op ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2753
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2754 if (! (postfix_un_op \|\| bin_op \|\| sep_op))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2755 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2756 maybe_warn_separator_insert (',');
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2757
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2758 xunput (',', yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2759 return retval;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2760 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2761 }
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2762 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2763
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2764 lexer_flags.quote_is_transpose = true;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	2765 lexer_flags.convert_spaces_to_comma = true;
3208 e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2766
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe] jwe parents: 3204 diff changeset	2767 return retval;
971 fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2768 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe] jwe parents: 970 diff changeset	2769
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2770 static void
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2771 maybe_unput_comma (int spc_gobbled)
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2772 {
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2773 if (nesting_level.is_bracket ()
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	2774 \|\| (nesting_level.is_brace ()
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2775 && ! lexer_flags.looking_at_object_index.front ()))
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2776 {
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2777 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	2778
3246 a41cc560087a [project @ 1999-06-19 06:46:20 by jwe] jwe parents: 3238 diff changeset	2779 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	2780
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	2781 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	2782 int c2 = text_yyinput ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2783
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2784 xunput (c2, yytext);
adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	2785 xunput (c1, yytext);
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2786
3263 7d80b56e0dc8 [project @ 1999-08-20 19:10:09 by jwe] jwe parents: 3258 diff changeset	2787 int sep_op = next_token_is_sep_op ();
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2788
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2789 int dot_op = (c1 == '.'
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2790 && (isalpha (c2) \|\| isspace (c2) \|\| c2 == '_'));
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	2791
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2792 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	2793 return;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2794
3985 fa0ae9105656 [project @ 2002-07-11 04:02:00 by jwe] jwe parents: 3974 diff changeset	2795 int index_op = (c1 == '(' \|\| c1 == '{');
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	2796
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2797 // 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	2798 // a comma.
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2799
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2800 if (index_op && ! spc_gobbled)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2801 return;
4476 b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2802
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2803 maybe_warn_separator_insert (',');
b7360f8eb035 [project @ 2003-07-30 17:17:21 by jwe] jwe parents: 4426 diff changeset	2804
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	2805 xunput (',', yytext);
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	2806 }
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
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2809 static bool
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2810 next_token_can_follow_bin_op (void)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2811 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2812 std::stack<char> buf;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2813
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2814 int c = EOF;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2815
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2816 // Skip whitespace in current statement on current line
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2817 while (true)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2818 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2819 c = text_yyinput ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2820
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	2821 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	2822
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 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	2824 break;
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2825 }
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 // Restore input.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2828 while (! buf.empty ())
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2829 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2830 xunput (buf.top (), yytext);
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2831
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2832 buf.pop ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2833 }
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 return (isalnum (c) \|\| match_any (c, "!\"'(-[_{~"));
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2836 }
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 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	2839 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	2840 {
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2841 // 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	2842 // 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	2843
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	2844 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	2845 \|\| 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	2846 \|\| 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	2847 \|\| 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	2848 \|\| 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	2849 }
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 static bool
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2852 looks_like_command_arg (void)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2853 {
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2854 bool retval = true;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2855
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2856 int c0 = text_yyinput ();
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2857
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2858 switch (c0)
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2859 {
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 case '=':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2862 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2863 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2864
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2865 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2866 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2867 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2868
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2869 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2870 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2871 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2872
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2873 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2874 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2875 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2876 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2877
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2878 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2879 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2880 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2881
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2882 case '(':
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 // Indexing.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2885 retval = false;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2886 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2887
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2888 case '\n':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2889 // EOL.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2890 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2891
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2892 case '\'':
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 // Beginning of a character string.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2895 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2896
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 case '+':
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 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2901 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2902
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2903 switch (c1)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2904 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2905 case '\n':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2906 // EOL.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2907 case '+':
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 // Unary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2910 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2911
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2912 case '\t':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2913 case ' ':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2914 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2915 if (next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2916 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2917 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2918 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2919
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2920 case '=':
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2921 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2922 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2923
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2924 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2925 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2926 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2927
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2928 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2929 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2930 break;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2931 }
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 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2934 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2935 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2936
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2937 case ':':
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 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2942 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2943
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2944 if (! match_any (c1, ",;\n") && (c1 == ' ' \|\| c1 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2945 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2946 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2947
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2948 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2949 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2950 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2951
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 case '.':
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2954 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2955 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2956
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2957 if (match_any (c1, "+-/\\^*"))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2958 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2959 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2960
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2961 if (c2 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2962 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2963 int c3 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2964
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2965 if (! match_any (c3, ",;\n") && (c3 == ' ' \|\| c3 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2966 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2967 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2968
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2969 xunput (c3, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2970 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2971 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	2972 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2973 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2974
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2975 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2976 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2977 else if (! match_any (c1, ",;\n")
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2978 && (! isdigit (c1) && c1 != ' ' && c1 != '\t'
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2979 && c1 != '.'))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2980 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2981 // Structure reference. FIXME -- is this a complete check?
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2982
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2983 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2984 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2985
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2986 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2987 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2988 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	2989
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 case '&':
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 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2995 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2996
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2997 if (c1 == c0)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2998 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	2999 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3000
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3001 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3002 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3003 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3004
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3005 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3006 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3007 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	3008 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3009 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3010
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3011 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3012 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3013 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3014
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 case '<':
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 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3019 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3020
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3021 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3022 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3023 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3024
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3025 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3026 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3027 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3028
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3029 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3030 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3031 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	3032 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3033 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3034
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3035 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3036 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3037 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3038
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 case '~':
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 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3043 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3044
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3045 // ~ and ! can be unary ops, so require following =.
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3046 if (c1 == '=')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3047 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3048 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3049
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3050 if (! match_any (c2, ",;\n") && (c2 == ' ' \|\| c2 == '\t')
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3051 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3052 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3053
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3054 xunput (c2, yytext);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3055 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3056 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	3057 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3058 retval = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3059
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3060 xunput (c1, yytext);
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3061 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3062 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3063
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3064 default:
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3065 break;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3066 }
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 xunput (c0, yytext);
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3069
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3070 return retval;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3071 }
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3072
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3073 static int
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3074 handle_superclass_identifier (void)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3075 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3076 eat_continuation ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3077
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3078 std::string pkg;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3079 std::string meth = strip_trailing_whitespace (yytext);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3080 size_t pos = meth.find ("@");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3081 std::string cls = meth.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3082 meth = meth.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3083
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3084 pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3085 if (pos != std::string::npos)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3086 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3087 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3088 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3089 }
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 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	3092 \|\| is_keyword_token (pkg));
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3093 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3094 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3095 error ("method, class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3096 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3097 }
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 yylval.tok_val
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3100 = new token (meth.empty () ? 0 : &(symbol_table::insert (meth)),
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3101 cls.empty () ? 0 : &(symbol_table::insert (cls)),
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3102 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3103 input_line_number, current_input_column);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3104 token_stack.push (yylval.tok_val);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3105
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3106 lexer_flags.convert_spaces_to_comma = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3107 current_input_column += yyleng;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3108
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3109 return SUPERCLASSREF;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3110 }
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 static int
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3113 handle_meta_identifier (void)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3114 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3115 eat_continuation ();
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3116
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3117 std::string pkg;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3118 std::string cls = strip_trailing_whitespace (yytext).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3119 size_t pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3120
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3121 if (pos != std::string::npos)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3122 {
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3123 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3124 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3125 }
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 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	3128 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3129 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3130 error ("class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3131 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3132 }
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 yylval.tok_val
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3135 = 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	3136 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3137 input_line_number, current_input_column);
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3138
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3139 token_stack.push (yylval.tok_val);
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3140
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3141 lexer_flags.convert_spaces_to_comma = true;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3142 current_input_column += yyleng;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3143
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3144 return METAQUERY;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3145 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3146
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	3147 // 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	3148 // an identifier. Handles keywords. Return -1 if the identifier
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe] jwe parents: 4237 diff changeset	3149 // should be ignored.
767 42731861ee09 [project @ 1994-10-05 21:26:54 by jwe] jwe parents: 747 diff changeset	3150
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3151 static int
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3152 handle_identifier (void)
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3153 {
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3154 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	3155
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3156 std::string tok = strip_trailing_whitespace (yytext);
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3157
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3158 int c = yytext[yyleng-1];
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3159
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3160 int cont_is_spc = eat_continuation ();
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3161
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3162 int spc_gobbled = (cont_is_spc \|\| c == ' ' \|\| c == '\t');
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3973 diff changeset	3163
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3164 // If we are expecting a structure element, avoid recognizing
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3165 // 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	3166 // 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	3167 // decide whether to insert a comma.
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	3168
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3169 if (lexer_flags.looking_at_indirect_ref)
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3170 {
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3171 do_comma_insert_check ();
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3172
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3173 maybe_unput_comma (spc_gobbled);
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3174
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3175 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	3176 current_input_column);
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3177
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3178 token_stack.push (yylval.tok_val);
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3179
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3180 lexer_flags.quote_is_transpose = true;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3181 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	3182 lexer_flags.looking_for_object_index = true;
2819 ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3183
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3184 current_input_column += yyleng;
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe] jwe parents: 2804 diff changeset	3185
2970 b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe] jwe parents: 2926 diff changeset	3186 return STRUCT_ELT;
1072 0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe] jwe parents: 1060 diff changeset	3187 }
747 6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe] jwe parents: 661 diff changeset	3188
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3189 lexer_flags.at_beginning_of_statement = false;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3190
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3191 // The is_keyword_token may reset
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3192 // 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	3193 // 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	3194 // statement.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3195
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3196 int kw_token = is_keyword_token (tok);
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3197
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3198 // 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	3199 // 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	3200 // statement.
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3201
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3202 if (lexer_flags.looking_at_function_handle)
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3203 {
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3204 if (kw_token)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3205 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3206 error ("function handles may not refer to keywords");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3207
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3208 return LEXICAL_ERROR;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3209 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3210 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3211 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3212 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	3213 current_input_column);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3214
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3215 token_stack.push (yylval.tok_val);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3216
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3217 current_input_column += yyleng;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3218 lexer_flags.quote_is_transpose = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3219 lexer_flags.convert_spaces_to_comma = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3220 lexer_flags.looking_for_object_index = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3221
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3222 return FCN_HANDLE;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3223 }
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3224 }
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3225
5102 b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe] jwe parents: 5088 diff changeset	3226 // 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	3227 // Keywords can be followed by identifiers.
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3228
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3229 if (kw_token)
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3230 {
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3231 if (kw_token >= 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3232 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3233 current_input_column += yyleng;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3234 lexer_flags.quote_is_transpose = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3235 lexer_flags.convert_spaces_to_comma = true;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3236 lexer_flags.looking_for_object_index = false;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3237 }
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3238
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3239 return kw_token;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3240 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3241
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3242 // 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	3243
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	3244 int c1 = text_yyinput ();
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3245
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3246 bool next_tok_is_eq = false;
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3247 if (c1 == '=')
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3248 {
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	3249 int c2 = text_yyinput ();
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	3250 xunput (c2, yytext);
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3251
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3252 if (c2 != '=')
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3253 next_tok_is_eq = true;
3480 45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3254 }
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe] jwe parents: 3428 diff changeset	3255
8447 adab48231a03 make input_line_number work again John W. Eaton <jwe@octave.org> parents: 8312 diff changeset	3256 xunput (c1, yytext);
1001 641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe] jwe parents: 991 diff changeset	3257
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3258 // Kluge alert.
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3259 //
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3260 // 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	3261 // arguments.
76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe] jwe parents: 2716 diff changeset	3262 //
76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe] jwe parents: 2716 diff changeset	3263 // 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	3264 // 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	3265 // 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	3266 // as a variable in the current symbol table.
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3267
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3268 if (! is_variable (tok))
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3269 {
10052 5813ec5077b5 don't allow e, i, j, inf, or nan to be commands John W. Eaton <jwe@octave.org> parents: 10048 diff changeset	3270 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	3271 && looks_like_command_arg ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3272 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3273 BEGIN (COMMAND_START);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3274 }
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3275 else if (next_tok_is_eq
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3276 \|\| lexer_flags.looking_at_decl_list
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3277 \|\| lexer_flags.looking_at_return_list
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3278 \|\| (lexer_flags.looking_at_parameter_list
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3279 && ! lexer_flags.looking_at_initializer_expression))
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3280 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3281 symbol_table::force_variable (tok);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3282 }
8001 ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	3283 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	3284 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3285 lexer_flags.pending_local_variables.insert (tok);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3286 }
2702 7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3287 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe] jwe parents: 2621 diff changeset	3288
4234 90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3289 // 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	3290 // transformation of the end keyword...
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3291
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3292 if (tok == "end")
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3293 tok = "__end__";
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3294
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	3295 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	3296 input_line_number, current_input_column);
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	3297
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3298 token_stack.push (yylval.tok_val);
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3299
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3300 // 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	3301 // (if needed).
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3302
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3303 lexer_flags.convert_spaces_to_comma = true;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3304
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3305 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	3306 {
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3307 lexer_flags.quote_is_transpose = true;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3308
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3309 do_comma_insert_check ();
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3310
5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3311 maybe_unput_comma (spc_gobbled);
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3312 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3313
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3314 current_input_column += yyleng;
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3315
9324 29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3316 if (tok != "__end__")
29563379fa9b don't look for object index after keyword John W. Eaton <jwe@octave.org> parents: 8974 diff changeset	3317 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	3318
146 edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3319 return NAME;
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3320 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe] jwe parents: 143 diff changeset	3321
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3322 void
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3323 lexical_feedback::init (void)
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3324 {
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3325 // Not initially defining a matrix list.
3351 8623649c967c [project @ 1999-11-15 16:17:01 by jwe] jwe parents: 3332 diff changeset	3326 bracketflag = 0;
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3327
4613 d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	3328 // Not initially defining a cell array list.
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	3329 braceflag = 0;
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe] jwe parents: 4612 diff changeset	3330
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3331 // Not initially inside a loop or if statement.
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3332 looping = 0;
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3333
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3334 // Not initially defining a function.
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3335 defining_func = false;
2877 5c1b9e545dd1 [project @ 1997-04-24 09:07:39 by jwe] jwe parents: 2861 diff changeset	3336 parsed_function_name = false;
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	3337 parsing_class_method = false;
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3338
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3339 // Not initially defining a class with classdef.
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3340 maybe_classdef_get_set_method = false;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3341 parsing_classdef = false;
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3342
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3343 // Not initiallly looking at a function handle.
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3344 looking_at_function_handle = 0;
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4923 diff changeset	3345
8701 1652e39b934e handle command names in declaration lists John W. Eaton <jwe@octave.org> parents: 8537 diff changeset	3346 // 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	3347 looking_at_return_list = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3348 looking_at_parameter_list = false;
8701 1652e39b934e handle command names in declaration lists John W. Eaton <jwe@octave.org> parents: 8537 diff changeset	3349 looking_at_decl_list = false;
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3350
7634 ae90e05ad299 fix parameter list initializer bug John W. Eaton <jwe@octave.org> parents: 7587 diff changeset	3351 // Not looking at an argument list initializer expression.
ae90e05ad299 fix parameter list initializer bug John W. Eaton <jwe@octave.org> parents: 7587 diff changeset	3352 looking_at_initializer_expression = false;
ae90e05ad299 fix parameter list initializer bug John W. Eaton <jwe@octave.org> parents: 7587 diff changeset	3353
3796 c34164f566f6 [project @ 2001-02-14 00:17:54 by jwe] jwe parents: 3779 diff changeset	3354 // 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	3355 // assignment statement.
c34164f566f6 [project @ 2001-02-14 00:17:54 by jwe] jwe parents: 3779 diff changeset	3356 looking_at_matrix_or_assign_lhs = false;
c34164f566f6 [project @ 2001-02-14 00:17:54 by jwe] jwe parents: 3779 diff changeset	3357
4234 90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3358 // Not parsing an object index.
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3359 while (! looking_at_object_index.empty ())
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3360 looking_at_object_index.pop_front ();
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3361
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3362 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	3363
6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	3364 // 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	3365 looking_for_object_index = false;
4234 90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe] jwe parents: 4233 diff changeset	3366
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3367 // 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	3368 at_beginning_of_statement = true;
5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3369
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3370 // 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	3371 // beginning of input.
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3372 convert_spaces_to_comma = true;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3373 do_comma_insert = false;
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3374
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3375 // Not initially looking at indirect references.
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3376 looking_at_indirect_ref = false;
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3377
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3378 // Quote marks strings intially.
2857 5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe] jwe parents: 2856 diff changeset	3379 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	3380
ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context John W. Eaton <jwe@octave.org> parents: 7898 diff changeset	3381 // 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	3382 pending_local_variables.clear ();
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3383 }
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1823 diff changeset	3384
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3385 bool
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3386 is_keyword (const std::string& s)
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3387 {
5088 7830f271a53f [project @ 2004-12-01 19:54:45 by jwe] jwe parents: 5035 diff changeset	3388 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	3389 }
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3390
8746 5dd06f19e9be handle commands in the lexer John W. Eaton <jwe@octave.org> parents: 8745 diff changeset	3391 DEFUN (iskeyword, args, ,
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3392 "-- texinfo --\n\
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3393 @deftypefn {Built-in Function} {} iskeyword (@var{name})\n\
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3394 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	3395 is omitted, return a list of keywords.\n\
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3396 @end deftypefn")
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3397 {
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3398 octave_value retval;
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3399
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3400 int argc = args.length () + 1;
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3401
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3402 string_vector argv = args.make_argv ("iskeyword");
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3403
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3404 if (error_state)
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3405 return 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 if (argc == 1)
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3408 {
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3409 string_vector lst (TOTAL_KEYWORDS);
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 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	3412 lst[i] = wordlist[i].name;
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3413
8504 0e0bd07e6ae2 omission from last patch Jaroslav Hajek <highegg@gmail.com> parents: 8447 diff changeset	3414 retval = Cell (lst.sort ());
4264 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 else if (argc == 2)
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3417 {
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4765 diff changeset	3418 retval = is_keyword (argv[1]);
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3419 }
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3420 else
5823 080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe] jwe parents: 5794 diff changeset	3421 print_usage ();
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 return retval;
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3424 }
4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3425
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3426 void
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3427 prep_lexer_for_script_file (void)
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3428 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3429 BEGIN (SCRIPT_FILE_BEGIN);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7634 diff changeset	3430 }
4264 4e2d2516da22 [project @ 2003-01-03 05:30:34 by jwe] jwe parents: 4248 diff changeset	3431
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3432 void
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3433 prep_lexer_for_function_file (void)
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3434 {
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3435 BEGIN (FUNCTION_FILE_BEGIN);
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3436 }
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3437
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3438 static void
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3439 maybe_warn_separator_insert (char sep)
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3440 {
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	3441 std::string nm = curr_fcn_file_full_name;
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3442
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3443 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3444 warning_with_id ("Octave:separator-insert",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3445 "potential auto-insertion of `%c' near line %d",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3446 sep, input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3447 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3448 warning_with_id ("Octave:separator-insert",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3449 "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	3450 sep, input_line_number, nm.c_str ());
3388 42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3451 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe] jwe parents: 3351 diff changeset	3452
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3453 static void
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3454 gripe_single_quote_string (void)
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3455 {
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3503 diff changeset	3456 std::string nm = curr_fcn_file_full_name;
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3457
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3458 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3459 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3460 "single quote delimited string near line %d",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3461 input_line_number);
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3462 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5783 diff changeset	3463 warning_with_id ("Octave:single-quote-string",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3464 "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	3465 input_line_number, nm.c_str ());
3400 18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3466 }
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe] jwe parents: 3388 diff changeset	3467
4037 7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3468 static void
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3469 gripe_matlab_incompatible (const std::string& msg)
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3470 {
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3471 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	3472
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3473 if (nm.empty ())
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3474 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3475 "potential Matlab compatibility problem: %s",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3476 msg.c_str ());
8974 fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3477 else
fde2a916b2ac include line and file info in parser warnings John W. Eaton <jwe@octave.org> parents: 8950 diff changeset	3478 warning_with_id ("Octave:matlab-incompatible",
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3479 "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	3480 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	3481 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3482
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3483 static void
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3484 maybe_gripe_matlab_incompatible_comment (char c)
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3485 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3486 if (c == '#')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3487 gripe_matlab_incompatible ("# used as comment character");
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 gripe_matlab_incompatible_continuation (void)
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 gripe_matlab_incompatible ("\\ used as line continuation marker");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3494 }
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 static void
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3497 gripe_matlab_incompatible_operator (const std::string& op)
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3498 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3499 std::string t = op;
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3500 int n = t.length ();
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3501 if (t[n-1] == '\n')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3502 t.resize (n-1);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3503 gripe_matlab_incompatible (t + " used as operator");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3504 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe] jwe parents: 4018 diff changeset	3505
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3506 static void
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3507 display_token (int tok)
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3508 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3509 switch (tok)
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3510 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3511 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	3512 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	3513 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	3514 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	3515 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	3516 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	3517 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	3518 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	3519 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	3520 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	3521 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	3522 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	3523 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	3524 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	3525 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	3526 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	3527 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	3528 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	3529 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	3530 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	3531 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	3532 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	3533 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	3534 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	3535 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	3536 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	3537 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	3538 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	3539 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	3540 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	3541 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	3542 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	3543 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	3544 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	3545 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	3546 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	3547 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	3548 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	3549 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	3550 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	3551 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	3552 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	3553 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	3554 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	3555 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	3556 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	3557 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	3558 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	3559 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	3560 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	3561 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	3562 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	3563 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	3564 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	3565 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	3566 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	3567 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	3568 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	3569 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	3570 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	3571 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	3572 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	3573 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	3574 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	3575 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	3576 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	3577 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	3578 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	3579 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	3580 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	3581 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	3582 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	3583 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	3584 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	3585 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	3586 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	3587 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	3588 case FUNCTION_FILE: std::cerr << "FUNCTION_FILE\n"; break;
9476 d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3589 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3590 case METAQUERY: std::cerr << "METAQUERY\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3591 case GET: std::cerr << "GET\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3592 case SET: std::cerr << "SET\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3593 case PROPERTIES: std::cerr << "PROPERTIES\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3594 case METHODS: std::cerr << "METHODS\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3595 case EVENTS: std::cerr << "EVENTS\n"; break;
d9b25c5b8ee5 handle classdef syntax in lexer and parser Ryan Rusaw parents: 9474 diff changeset	3596 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	3597 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	3598 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	3599 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	3600 default:
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3601 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3602 if (tok < 256)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3603 std::cerr << static_cast<char> (tok) << "\n";
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3604 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10182 diff changeset	3605 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	3606 }
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3607 break;
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 }
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3610
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3611 static void
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3612 display_state (void)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3613 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3614 std::cerr << "S: ";
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3615
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3616 switch (YY_START)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3617 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3618 case INITIAL:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3619 std::cerr << "INITIAL" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3620 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3621
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3622 case COMMAND_START:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3623 std::cerr << "COMMAND_START" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3624 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3625
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3626 case MATRIX_START:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3627 std::cerr << "MATRIX_START" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3628 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3629
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3630 case SCRIPT_FILE_BEGIN:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3631 std::cerr << "SCRIPT_FILE_BEGIN" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3632 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3633
9474 25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3634 case FUNCTION_FILE_BEGIN:
25ed2d6aacf6 Parse nested functions more accurately. David Grundberg <individ@acc.umu.se> parents: 9324 diff changeset	3635 std::cerr << "FUNCTION_FILE_BEGIN" << std::endl;
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3636 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3637
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3638 default:
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3639 std::cerr << "UNKNOWN START STATE!" << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3640 break;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3641 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3642 }
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3643
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3644 static void
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3645 lexer_debug (const char pattern, const char text)
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3646 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3647 std::cerr << std::endl;
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 display_state ();
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 std::cerr << "P: " << pattern << std::endl;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3652 std::cerr << "T: " << text << std::endl;
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
7722 c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3655 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	3656 "-- texinfo --\n\
8812 7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3657 @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	3658 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	3659 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	3660 @end deftypefn")
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3661 {
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3662 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	3663 }
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed John W. Eaton <jwe@octave.org> parents: 7720 diff changeset	3664
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3665 DEFUN (__token_count__, , ,
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3666 "-- texinfo --\n\
8812 7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3667 @deftypefn {Built-in Function} {} __token_count__ ()\n\
4910 1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3668 Number of language tokens processed since Octave startup.\n\
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3669 @end deftypefn")
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3670 {
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3671 return octave_value (Vtoken_count);
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3672 }
1242acab4246 [project @ 2004-07-12 17:14:13 by jwe] jwe parents: 4867 diff changeset	3673
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3674 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	3675 "-- texinfo --\n\
7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3676 @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	3677 Undocumented internal function.\n\
7d48766c21a5 use consistent format for doc strings of internal functions John W. Eaton <jwe@octave.org> parents: 8767 diff changeset	3678 @end deftypefn")
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3679 {
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3680 octave_value retval;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3681
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3682 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	3683 "__lexer_debug_flag__");
8535 75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3684
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3685 return retval;
75e6ab186761 lexer debugging functions John W. Eaton <jwe@octave.org> parents: 8504 diff changeset	3686 }

Mercurial > octave-nkf

annotate src/lex.ll @ 10426:4db7beace28e