octave: libinterp/parse-tree/lex.h annotate

annotate libinterp/parse-tree/lex.h @ 16194:b7ca669af528

reset lexical_feedback state before starting a new parse * lex.h, lex.cc (bbp_nesting_level::reset): New function. (lexical_feedback::reset, lexical_feedback::reset_token_stack): New functions. (lexical_feedback::~lexical_feedback): Call reset_token_stack to do the job. (octave_lexer::reset): Call lexical_feedback::reset.

author	John W. Eaton <jwe@octave.org>
date	Tue, 05 Mar 2013 10:19:47 -0500
parents	d7392bf42fd1
children	b52d2f9294b6

rev	line source
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	1 /*
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	2
14138 72c96de7a403 maint: update copyright notices for 2012 John W. Eaton <jwe@octave.org> parents: 13973 diff changeset	3 Copyright (C) 1993-2012 John W. Eaton
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	4
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	5 This file is part of Octave.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	6
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	7 Octave is free software; you can redistribute it and/or modify it
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	8 under the terms of the GNU General Public License as published by the
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5775 diff changeset	9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5775 diff changeset	10 option) any later version.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	11
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	12 Octave is distributed in the hope that it will be useful, but WITHOUT
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	15 for more details.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	16
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	17 You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5775 diff changeset	18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5775 diff changeset	19 <http://www.gnu.org/licenses/>.
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	20
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	21 */
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	22
383 0b52c68ec81f [project @ 1994-03-09 21:19:44 by jwe] jwe parents: 247 diff changeset	23 #if !defined (octave_lex_h)
0b52c68ec81f [project @ 1994-03-09 21:19:44 by jwe] jwe parents: 247 diff changeset	24 #define octave_lex_h 1
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	25
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	26 #include <list>
16101 8d19626b38ae provide copy contructor and operator = for lexical_feedback class. John W. Eaton <jwe@octave.org> parents: 16100 diff changeset	27 #include <set>
11464 21b5284fa78d avoid error when parsing nested functions John W. Eaton <jwe@octave.org> parents: 11367 diff changeset	28 #include <stack>
8745 6dc61981d18b better handling of object indexing in lexer John W. Eaton <jwe@octave.org> parents: 8701 diff changeset	29
13973 2c664266e9d0 clean up parser memory on exit John W. Eaton <jwe@octave.org> parents: 13237 diff changeset	30 extern OCTINTERP_API void cleanup_parser (void);
2c664266e9d0 clean up parser memory on exit John W. Eaton <jwe@octave.org> parents: 13237 diff changeset	31
4867 c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4753 diff changeset	32 // Is the given string a keyword?
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4753 diff changeset	33 extern bool is_keyword (const std::string& s);
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe] jwe parents: 4753 diff changeset	34
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	35 class
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	36 stream_reader
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	37 {
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	38 public:
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	39 virtual int getc (void) = 0;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	40 virtual int ungetc (int c) = 0;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	41
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	42 protected:
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	43 stream_reader (void) { }
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	44 ~stream_reader (void) { }
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	45
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	46 private:
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	47
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	48 // No copying!
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	49 stream_reader (const stream_reader&);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	50 stream_reader& operator = (const stream_reader&);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	51 };
16111 3ec4f6488569 move token stack to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16110 diff changeset	52
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	53 // Forward decl for octave_lexer::token_stack.
16111 3ec4f6488569 move token stack to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16110 diff changeset	54 class token;
3ec4f6488569 move token stack to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16110 diff changeset	55
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	56 // For communication between the lexer and parser.
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	57
3585 d9803711e047 [project @ 2000-02-08 04:35:39 by jwe] jwe parents: 3351 diff changeset	58 class
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	59 lexical_feedback
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	60 {
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	61 public:
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	62
16106 031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	63 // Did eat_whitespace or eat_continuation eat a space or tab, or a
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	64 // newline, or both?
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	65 //
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	66 // Functions that return this type will return a logical OR of the
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	67 // following values:
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	68 //
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	69 // NO_WHITESPACE no spaces to eat
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	70 // SPACE_OR_TAB space or tab in input
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	71 // NEWLINE bare new line in input
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	72
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	73 enum whitespace_type
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	74 {
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	75 NO_WHITESPACE = 1,
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	76 SPACE_OR_TAB = 2,
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	77 NEWLINE = 4
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	78 };
031117f4db7c use enum for values returned by eat_continuation and eat_whitespace John W. Eaton <jwe@octave.org> parents: 16105 diff changeset	79
16104 c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	80 // Track nesting of square brackets, curly braces, and parentheses.
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	81
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	82 class bbp_nesting_level
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	83 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	84 private:
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	85
16107 3b791008b88e give name to anonymous enum John W. Eaton <jwe@octave.org> parents: 16106 diff changeset	86 enum bracket_type
16104 c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	87 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	88 BRACKET = 1,
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	89 BRACE = 2,
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	90 PAREN = 3
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	91 };
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	92
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	93 public:
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	94
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	95 bbp_nesting_level (void) : context () { }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	96
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	97 bbp_nesting_level (const bbp_nesting_level& nl) : context (nl.context) { }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	98
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	99 bbp_nesting_level& operator = (const bbp_nesting_level& nl)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	100 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	101 if (&nl != this)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	102 context = nl.context;
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	103
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	104 return *this;
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	105 }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	106
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	107 ~bbp_nesting_level (void) { }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	108
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	109 void reset (void)
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	110 {
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	111 while (! context.empty ())
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	112 context.pop ();
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	113 }
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	114
16104 c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	115 void bracket (void) { context.push (BRACKET); }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	116
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	117 bool is_bracket (void)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	118 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	119 return ! context.empty () && context.top () == BRACKET;
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	120 }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	121
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	122 void brace (void) { context.push (BRACE); }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	123
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	124 bool is_brace (void)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	125 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	126 return ! context.empty () && context.top () == BRACE;
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	127 }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	128
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	129 void paren (void) { context.push (PAREN); }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	130
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	131 bool is_paren (void)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	132 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	133 return ! context.empty () && context.top () == PAREN;
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	134 }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	135
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	136 bool is_bracket_or_brace (void)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	137 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	138 return (! context.empty ()
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	139 && (context.top () == BRACKET \|\| context.top () == BRACE));
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	140 }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	141
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	142 bool none (void) { return context.empty (); }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	143
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	144 void remove (void)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	145 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	146 if (! context.empty ())
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	147 context.pop ();
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	148 }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	149
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	150 void clear (void)
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	151 {
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	152 while (! context.empty ())
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	153 context.pop ();
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	154 }
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	155
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	156 private:
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	157
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	158 std::stack<int> context;
c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	159 };
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	160
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	161 lexical_feedback (void)
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	162 : end_of_input (false), convert_spaces_to_comma (true),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	163 do_comma_insert (false), at_beginning_of_statement (true),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	164 looking_at_anon_fcn_args (false), looking_at_return_list (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	165 looking_at_parameter_list (false), looking_at_decl_list (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	166 looking_at_initializer_expression (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	167 looking_at_matrix_or_assign_lhs (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	168 looking_for_object_index (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	169 looking_at_indirect_ref (false), parsing_class_method (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	170 maybe_classdef_get_set_method (false), parsing_classdef (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	171 quote_is_transpose (false),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	172 input_line_number (1), current_input_column (1),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	173 bracketflag (0), braceflag (0),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	174 looping (0), defining_func (0), looking_at_function_handle (0),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	175 block_comment_nesting_level (0),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	176 looking_at_object_index (), parsed_function_name (),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	177 pending_local_variables (), nesting_level (), token_stack ()
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	178 {
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	179 init ();
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	180 }
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	181
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	182 ~lexical_feedback (void);
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	183
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	184 void init (void);
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	185
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	186 void reset (void);
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	187
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	188 // true means that we have encountered eof on the input stream.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	189 bool end_of_input;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	190
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	191 // true means that we should convert spaces to a comma inside a
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	192 // matrix definition.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	193 bool convert_spaces_to_comma;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	194
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	195 // gag. stupid kludge so that [[1,2][3,4]] will work.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	196 bool do_comma_insert;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	197
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	198 // true means we are at the beginning of a statement, where a
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	199 // command name is possible.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	200 bool at_beginning_of_statement;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	201
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	202 // true means we are parsing an anonymous function argument list.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	203 bool looking_at_anon_fcn_args;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	204
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	205 // true means we're parsing the return list for a function.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	206 bool looking_at_return_list;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	207
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	208 // true means we're parsing the parameter list for a function.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	209 bool looking_at_parameter_list;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	210
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	211 // true means we're parsing a declaration list (global or
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	212 // persistent).
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	213 bool looking_at_decl_list;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	214
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	215 // true means we are looking at the initializer expression for a
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	216 // parameter list element.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	217 bool looking_at_initializer_expression;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	218
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	219 // true means we're parsing a matrix or the left hand side of
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	220 // multi-value assignment statement.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	221 bool looking_at_matrix_or_assign_lhs;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	222
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	223 // object index not possible until we've seen something.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	224 bool looking_for_object_index;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	225
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	226 // true means we're looking at an indirect reference to a
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	227 // structure element.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	228 bool looking_at_indirect_ref;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	229
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	230 // true means we are parsing a class method in function or classdef file.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	231 bool parsing_class_method;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	232
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	233 // true means we are parsing a class method declaration line in a
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	234 // classdef file and can accept a property get or set method name.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	235 // for example, "get.propertyname" is recognized as a function name.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	236 bool maybe_classdef_get_set_method;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	237
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	238 // true means we are parsing a classdef file
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	239 bool parsing_classdef;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	240
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	241 // return transpose or start a string?
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	242 bool quote_is_transpose;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	243
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	244 // the current input line number.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	245 int input_line_number;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	246
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	247 // the column of the current token.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	248 int current_input_column;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	249
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	250 // square bracket level count.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	251 int bracketflag;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	252
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	253 // curly brace level count.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	254 int braceflag;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	255
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	256 // true means we're in the middle of defining a loop.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	257 int looping;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	258
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	259 // nonzero means we're in the middle of defining a function.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	260 int defining_func;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	261
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	262 // nonzero means we are parsing a function handle.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	263 int looking_at_function_handle;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	264
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	265 // nestng level for blcok comments.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	266 int block_comment_nesting_level;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	267
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	268 // if the front of the list is true, the closest paren, brace, or
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	269 // bracket nesting is an index for an object.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	270 std::list<bool> looking_at_object_index;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	271
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	272 // if the top of the stack is true, then we've already seen the name
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	273 // of the current function. should only matter if
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	274 // current_function_level > 0
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	275 std::stack<bool> parsed_function_name;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	276
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	277 // set of identifiers that might be local variable names.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	278 std::set<std::string> pending_local_variables;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	279
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	280 // is the closest nesting level a square bracket, squiggly brace or
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	281 // a paren?
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	282 bbp_nesting_level nesting_level;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	283
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	284 // Stack to hold tokens so that we can delete them when the parser is
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	285 // reset and avoid growing forever just because we are stashing some
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	286 // information.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	287 std::stack <token*> token_stack;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	288
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	289 private:
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	290
16194 b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	291 void reset_token_stack (void);
b7ca669af528 reset lexical_feedback state before starting a new parse John W. Eaton <jwe@octave.org> parents: 16193 diff changeset	292
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	293 // No copying!
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	294
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	295 lexical_feedback (const lexical_feedback&);
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	296
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	297 lexical_feedback& operator = (const lexical_feedback&);
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	298 };
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	299
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	300 // octave_lexer inherits from lexical_feedback because we will
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	301 // eventually have several different constructors and it is easier to
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	302 // intialize if everything is grouped in a parent class rather than
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	303 // listing all the members in the octave_lexer class.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	304
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	305 class
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	306 octave_lexer : public lexical_feedback
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	307 {
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	308 public:
16104 c8974e28da59 move nesting_level to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16103 diff changeset	309
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	310 // Handle buffering of input for lexer.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	311
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	312 class input_buffer
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	313 {
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	314 public:
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	315
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	316 input_buffer (void)
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	317 : buffer (), pos (0), chars_left (0), eof (false)
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	318 { }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	319
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	320 // Grab more input from the current input source.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	321 void read (void);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	322
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	323 // Copy at most max_size characters to buf.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	324 int copy_chunk (char *buf, size_t max_size);
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	325
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	326 bool empty (void) const { return chars_left == 0; }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	327
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	328 bool at_eof (void) const { return eof; }
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	329
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	330 private:
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	331
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	332 std::string buffer;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	333 const char *pos;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	334 size_t chars_left;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	335 bool eof;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	336 };
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	337
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	338 octave_lexer (void)
16193 d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor John W. Eaton <jwe@octave.org> parents: 16185 diff changeset	339 : lexical_feedback (), scanner (0), input_buf ()
16101 8d19626b38ae provide copy contructor and operator = for lexical_feedback class. John W. Eaton <jwe@octave.org> parents: 16100 diff changeset	340 {
8d19626b38ae provide copy contructor and operator = for lexical_feedback class. John W. Eaton <jwe@octave.org> parents: 16100 diff changeset	341 init ();
8d19626b38ae provide copy contructor and operator = for lexical_feedback class. John W. Eaton <jwe@octave.org> parents: 16100 diff changeset	342 }
8d19626b38ae provide copy contructor and operator = for lexical_feedback class. John W. Eaton <jwe@octave.org> parents: 16100 diff changeset	343
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	344 ~octave_lexer (void);
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	345
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16139 diff changeset	346 void init (void);
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	347
16139 2fd39ab12209 move a function and data member from lexical_feedback to octave_parser John W. Eaton <jwe@octave.org> parents: 16130 diff changeset	348 void reset (void);
16122 6884401b2fbb move reset_parser lexer helper function to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16120 diff changeset	349
16124 3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	350 void prep_for_script_file (void);
3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	351
3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	352 void prep_for_function_file (void);
3be725cd195b move more lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16122 diff changeset	353
16120 4b68eb9b98b0 move octave_read lexer helper function to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	354 int octave_read (char *buf, unsigned int max_size);
4b68eb9b98b0 move octave_read lexer helper function to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16118 diff changeset	355
16164 c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	356 int handle_end_of_input (void);
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class John W. Eaton <jwe@octave.org> parents: 16158 diff changeset	357
16128 210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	358 char *flex_yytext (void);
210039e91ad6 localize use of yytext with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16126 diff changeset	359
16130 421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	360 int flex_yyleng (void);
421dea028bbf localize use of yyleng with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16129 diff changeset	361
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	362 void do_comma_insert_check (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	363
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	364 int text_yyinput (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	365
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	366 void xunput (char c, char *buf);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	367
16125 96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	368 void xunput (char c);
96a58f197f93 allow xunput to be called without buffer argument John W. Eaton <jwe@octave.org> parents: 16124 diff changeset	369
16113 7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	370 void fixup_column_count (char *s);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	371
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	372 bool inside_any_object_index (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	373
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	374 int is_keyword_token (const std::string& s);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	375
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	376 bool is_variable (const std::string& name);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	377
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	378 std::string grab_block_comment (stream_reader& reader, bool& eof);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	379
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	380 std::string grab_comment_block (stream_reader& reader, bool at_bol,
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	381 bool& eof);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	382
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	383 int process_comment (bool start_in_block, bool& eof);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	384
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	385 bool next_token_is_sep_op (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	386
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	387 bool next_token_is_postfix_unary_op (bool spc_prev);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	388
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	389 bool next_token_is_bin_op (bool spc_prev);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	390
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	391 void scan_for_comments (const char *text);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	392
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	393 int eat_whitespace (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	394
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	395 void handle_number (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	396
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	397 bool have_continuation (bool trailing_comments_ok = true);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	398
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	399 bool have_ellipsis_continuation (bool trailing_comments_ok = true);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	400
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	401 int eat_continuation (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	402
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	403 int handle_string (char delim);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	404
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	405 bool next_token_is_assign_op (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	406
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	407 bool next_token_is_index_op (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	408
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	409 int handle_close_bracket (bool spc_gobbled, int bracket_type);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	410
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	411 void maybe_unput_comma (int spc_gobbled);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	412
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	413 bool next_token_can_follow_bin_op (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	414
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	415 bool looks_like_command_arg (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	416
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	417 int handle_superclass_identifier (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	418
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	419 int handle_meta_identifier (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	420
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	421 int handle_identifier (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	422
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	423 void maybe_warn_separator_insert (char sep);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	424
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	425 void gripe_single_quote_string (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	426
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	427 void gripe_matlab_incompatible (const std::string& msg);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	428
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	429 void maybe_gripe_matlab_incompatible_comment (char c);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	430
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	431 void gripe_matlab_incompatible_continuation (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	432
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	433 void gripe_matlab_incompatible_operator (const std::string& op);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16111 diff changeset	434
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	435 void push_token (token *);
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	436
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	437 token *current_token (void);
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	438
16118 f8e463523229 move more static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16115 diff changeset	439 void display_token (int tok);
f8e463523229 move more static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16115 diff changeset	440
16129 053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	441 void fatal_error (const char *msg);
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function John W. Eaton <jwe@octave.org> parents: 16128 diff changeset	442
16118 f8e463523229 move more static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16115 diff changeset	443 void lexer_debug (const char pattern, const char text);
f8e463523229 move more static lexer helper functions to lexical_feedback class John W. Eaton <jwe@octave.org> parents: 16115 diff changeset	444
16149 49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16139 diff changeset	445 // Internal state of the flex-generated lexer.
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16139 diff changeset	446 void *scanner;
49dfba4fd3c5 use pure parser and reentrant lexer interfaces John W. Eaton <jwe@octave.org> parents: 16139 diff changeset	447
16183 359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	448 // Object that reads and buffers input.
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	449 input_buffer input_buf;
359d56094efa handle lexer input buffering with class John W. Eaton <jwe@octave.org> parents: 16164 diff changeset	450
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	451 // For unwind protect.
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	452 static void cleanup (octave_lexer *lexer) { delete lexer; }
16126 5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	453
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	454 private:
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions John W. Eaton <jwe@octave.org> parents: 16125 diff changeset	455
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16107 diff changeset	456 // No copying!
7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16107 diff changeset	457
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	458 octave_lexer (const octave_lexer&);
16110 7302f8a4df83 use pointer for global lexical_feedback structure John W. Eaton <jwe@octave.org> parents: 16107 diff changeset	459
16158 7eb614760ddb rename lexical_feedback to octave_lexer John W. Eaton <jwe@octave.org> parents: 16149 diff changeset	460 octave_lexer& operator = (const octave_lexer&);
1826 b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	461 };
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe] jwe parents: 1315 diff changeset	462
1 78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe] jwe parents: diff changeset	463 #endif

Mercurial > octave

annotate libinterp/parse-tree/lex.h @ 16194:b7ca669af528