Mercurial > octave-nkf

annotate libinterp/parse-tree/lex.h @ 19631:db92e7e28e1f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
strip trailing whitespace from most source files * NEWS, doc/interpreter/contributors.in, doc/interpreter/func.txi, doc/interpreter/genpropdoc.m, doc/interpreter/octave_logo.eps, doc/interpreter/plot.txi, doc/interpreter/stmt.txi, examples/data/Makefile.am, libinterp/corefcn/data.cc, libinterp/corefcn/debug.cc, libinterp/corefcn/error.cc, libinterp/corefcn/file-io.cc, libinterp/corefcn/gl-render.cc, libinterp/corefcn/graphics.cc, libinterp/corefcn/graphics.in.h, libinterp/corefcn/load-path.cc, libinterp/corefcn/pr-output.cc, libinterp/corefcn/pt-jit.cc, libinterp/corefcn/strfind.cc, libinterp/corefcn/toplev.cc, libinterp/corefcn/toplev.h, libinterp/corefcn/urlwrite.cc, libinterp/corefcn/variables.cc, libinterp/octave-value/ov-classdef.cc, libinterp/octave-value/ov-classdef.h, libinterp/octave.cc, libinterp/parse-tree/lex.h, libinterp/parse-tree/oct-parse.in.yy, libinterp/parse-tree/pt-classdef.h, liboctave/system/file-ops.cc, liboctave/system/oct-env.cc, m4/acinclude.m4, scripts/deprecated/finite.m, scripts/deprecated/fmod.m, scripts/deprecated/fnmatch.m, scripts/deprecated/luinc.m, scripts/deprecated/octave_tmp_file_name.m, scripts/deprecated/syl.m, scripts/deprecated/usage.m, scripts/general/inputParser.m, scripts/general/interp1.m, scripts/general/interp2.m, scripts/general/interp3.m, scripts/general/isequal.m, scripts/general/private/__isequal__.m, scripts/geometry/voronoi.m, scripts/image/image.m, scripts/image/imshow.m, scripts/image/ind2rgb.m, scripts/linear-algebra/bandwidth.m, scripts/linear-algebra/isbanded.m, scripts/miscellaneous/bzip2.m, scripts/miscellaneous/cast.m, scripts/miscellaneous/copyfile.m, scripts/miscellaneous/delete.m, scripts/miscellaneous/fullfile.m, scripts/miscellaneous/getappdata.m, scripts/miscellaneous/gunzip.m, scripts/miscellaneous/isappdata.m, scripts/miscellaneous/ls.m, scripts/miscellaneous/mex.m, scripts/miscellaneous/movefile.m, scripts/miscellaneous/orderfields.m, scripts/miscellaneous/recycle.m, scripts/miscellaneous/rmappdata.m, scripts/miscellaneous/setfield.m, scripts/miscellaneous/symvar.m, scripts/miscellaneous/tar.m, scripts/miscellaneous/tmpnam.m, scripts/miscellaneous/unpack.m, scripts/miscellaneous/ver.m, scripts/miscellaneous/what.m, scripts/miscellaneous/xor.m, scripts/miscellaneous/zip.m, scripts/optimization/fminbnd.m, scripts/optimization/sqp.m, scripts/path/private/getsavepath.m, scripts/path/savepath.m, scripts/pkg/pkg.m, scripts/pkg/private/installed_packages.m, scripts/plot/draw/plotyy.m, scripts/plot/draw/polar.m, scripts/plot/draw/private/__quiver__.m, scripts/plot/draw/private/__scatter__.m, scripts/plot/draw/private/__stem__.m, scripts/plot/draw/surface.m, scripts/plot/draw/surfnorm.m, scripts/plot/util/copyobj.m, scripts/plot/util/hgload.m, scripts/plot/util/hgsave.m, scripts/plot/util/isprop.m, scripts/plot/util/linkprop.m, scripts/plot/util/private/__go_draw_axes__.m, scripts/set/setdiff.m, scripts/set/union.m, scripts/signal/periodogram.m, scripts/sparse/eigs.m, scripts/sparse/ilu.m, scripts/sparse/qmr.m, scripts/sparse/sprand.m, scripts/sparse/sprandn.m, scripts/specfun/beta.m, scripts/specfun/ellipke.m, scripts/specfun/isprime.m, scripts/statistics/base/lscov.m, scripts/testfun/__run_test_suite__.m, scripts/testfun/test.m: Strip trailing whitespace.
author John W. Eaton <jwe@octave.org>
date Tue, 20 Jan 2015 10:29:54 -0500
parents 932aca9a7c57
children 4197fc428c7d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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
17744
d63878346099 maint: Update copyright notices for release.
John W. Eaton <jwe@octave.org>
parents: 17733
diff changeset
3 Copyright (C) 1993-2013 John W. Eaton
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
4
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
5 This file is part of Octave.
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
6
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
7 Octave is free software; you can redistribute it and/or modify it
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
8 under the terms of the GNU General Public License as published by the
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 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
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
26 #include <deque>
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
27 #include <limits>
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
28 #include <list>
16101
8d19626b38ae provide copy contructor and operator = for lexical_feedback class.
John W. Eaton <jwe@octave.org>
parents: 16100
diff changeset
29 #include <set>
11464
21b5284fa78d avoid error when parsing nested functions
John W. Eaton <jwe@octave.org>
parents: 11367
diff changeset
30 #include <stack>
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
31
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
32 #include "comment-list.h"
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
33 #include "input.h"
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
34 #include "token.h"
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
35
4867
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe]
jwe
parents: 4753
diff changeset
36 // Is the given string a keyword?
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe]
jwe
parents: 4753
diff changeset
37 extern bool is_keyword (const std::string& s);
c7f9ea142fda [project @ 2004-04-20 19:41:11 by jwe]
jwe
parents: 4753
diff changeset
38
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
39 // For communication between the lexer and parser.
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
40
3585
d9803711e047 [project @ 2000-02-08 04:35:39 by jwe]
jwe
parents: 3351
diff changeset
41 class
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
42 lexical_feedback
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
43 {
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
44 public:
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
45
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
46 // Track symbol table information when parsing functions.
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
47
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
48 class symbol_table_context
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
49 {
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
50 public:
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
51
17796
6b51f5f44aea find symbols in proper scope when debugging (bug #40397)
John W. Eaton <jwe@octave.org>
parents: 17787
diff changeset
52 symbol_table_context (void) : frame_stack () { }
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
53
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
54 void clear (void)
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
55 {
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
56 while (! frame_stack.empty ())
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
57 frame_stack.pop ();
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
58 }
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
59
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
60 bool empty (void) const { return frame_stack.empty (); }
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
61
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
62 void pop (void)
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
63 {
17796
6b51f5f44aea find symbols in proper scope when debugging (bug #40397)
John W. Eaton <jwe@octave.org>
parents: 17787
diff changeset
64 if (empty ())
6b51f5f44aea find symbols in proper scope when debugging (bug #40397)
John W. Eaton <jwe@octave.org>
parents: 17787
diff changeset
65 panic_impossible ();
6b51f5f44aea find symbols in proper scope when debugging (bug #40397)
John W. Eaton <jwe@octave.org>
parents: 17787
diff changeset
66
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
67 frame_stack.pop ();
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
68 }
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
69
17796
6b51f5f44aea find symbols in proper scope when debugging (bug #40397)
John W. Eaton <jwe@octave.org>
parents: 17787
diff changeset
70 void push (symbol_table::scope_id scope = symbol_table::current_scope ())
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
71 {
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
72 frame_stack.push (scope);
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
73 }
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
74
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
75 symbol_table::scope_id curr_scope (void) const
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
76 {
17796
6b51f5f44aea find symbols in proper scope when debugging (bug #40397)
John W. Eaton <jwe@octave.org>
parents: 17787
diff changeset
77 return empty () ? symbol_table::current_scope () : frame_stack.top ();
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
78 }
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
79
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
80 private:
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
81
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
82 std::stack<symbol_table::scope_id> frame_stack;
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
83 };
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
84
16104
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
85 // 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
86
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
87 class bbp_nesting_level
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
88 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
89 private:
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
90
16107
3b791008b88e give name to anonymous enum
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
91 enum bracket_type
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
92 {
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
93 BRACKET = 1,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
94 BRACE = 2,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
95 PAREN = 3,
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
96 ANON_FCN_BODY = 4
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
97 };
16104
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 public:
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 bbp_nesting_level (void) : context () { }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
102
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
103 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
104
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
105 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
106 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
107 if (&nl != this)
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
108 context = nl.context;
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
109
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
110 return *this;
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
111 }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
112
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
113 ~bbp_nesting_level (void) { }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
114
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
115 void reset (void)
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
116 {
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
117 while (! context.empty ())
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
118 context.pop ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
119 }
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
120
16104
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
121 void bracket (void) { context.push (BRACKET); }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
122
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
123 bool is_bracket (void)
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
124 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
125 return ! context.empty () && context.top () == BRACKET;
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
126 }
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 void brace (void) { context.push (BRACE); }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
129
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
130 bool is_brace (void)
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
131 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
132 return ! context.empty () && context.top () == BRACE;
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
133 }
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 void paren (void) { context.push (PAREN); }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
136
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
137 bool is_paren (void)
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
138 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
139 return ! context.empty () && context.top () == PAREN;
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
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
142 void anon_fcn_body (void) { context.push (ANON_FCN_BODY); }
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
143
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
144 bool is_anon_fcn_body (void)
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
145 {
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
146 return ! context.empty () && context.top () == ANON_FCN_BODY;
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
147 }
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
148
16104
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
149 bool is_bracket_or_brace (void)
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
150 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
151 return (! context.empty ()
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
152 && (context.top () == BRACKET || context.top () == BRACE));
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
153 }
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 bool none (void) { return context.empty (); }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
156
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
157 void remove (void)
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
158 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
159 if (! context.empty ())
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
160 context.pop ();
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
161 }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
162
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
163 void clear (void)
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
164 {
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
165 while (! context.empty ())
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
166 context.pop ();
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
167 }
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
168
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
169 private:
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
170
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
171 std::stack<int> context;
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
172 };
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
173
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
174 class token_cache
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
175 {
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
176 public:
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
177
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
178 // Store an "unlimited" number of tokens.
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
179 token_cache (size_t sz_arg = std::numeric_limits<size_t>::max ())
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
180 : buffer (), sz (sz_arg)
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
181 { }
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
182
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
183 void push (token *tok)
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
184 {
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
185 if (buffer.size () == sz)
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
186 pop ();
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
187
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
188 buffer.push_front (tok);
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
189 }
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
190
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
191 void pop (void)
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
192 {
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
193 if (! empty ())
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
194 {
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
195 delete buffer.back ();
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
196 buffer.pop_back ();
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
197 }
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
198 }
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
199
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
200 // Direct access.
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
201 token *at (size_t n)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
202 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
203 return empty () ? 0 : buffer.at (n);
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
204 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
205
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
206 const token *at (size_t n) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
207 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
208 return empty () ? 0 : buffer.at (n);
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
209 }
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
210
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
211 // Most recently pushed.
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
212 token *front (void)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
213 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
214 return empty () ? 0 : buffer.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
215 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
216
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
217 const token *front (void) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
218 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
219 return empty () ? 0 : buffer.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
220 }
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
221
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
222 token *back (void)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
223 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
224 return empty () ? 0 : buffer.back ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
225 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
226
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
227 const token *back (void) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
228 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
229 return empty () ? 0 : buffer.back ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
230 }
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
231
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
232 // Number of elements currently in the buffer, max of sz.
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
233 size_t size (void) const { return buffer.size (); }
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
234
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
235 bool empty (void) const { return buffer.empty (); }
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
236
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
237 void clear (void)
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
238 {
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
239 while (! empty ())
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
240 pop ();
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
241 }
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
242
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
243 private:
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
244
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
245 std::deque<token *> buffer;
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
246
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
247 size_t sz;
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
248
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
249 // No copying!
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
250
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
251 token_cache (const token_cache&);
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
252
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
253 token_cache& operator = (const token_cache&);
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
254 };
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
255
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
256 lexical_feedback (void)
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
257 : end_of_input (false), at_beginning_of_statement (true),
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
258 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
259 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
260 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
261 looking_at_matrix_or_assign_lhs (false),
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
262 looking_for_object_index (false),
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
263 looking_at_indirect_ref (false), parsing_class_method (false),
16211
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
264 parsing_classdef (false), maybe_classdef_get_set_method (false),
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
265 parsing_classdef_get_method (false),
19631
db92e7e28e1f strip trailing whitespace from most source files
John W. Eaton <jwe@octave.org>
parents: 18520
diff changeset
266 parsing_classdef_set_method (false),
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
267 quote_is_transpose (false), force_script (false),
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
268 reading_fcn_file (false), reading_script_file (false),
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
269 reading_classdef_file (false),
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
270 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
271 bracketflag (0), braceflag (0),
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
272 looping (0), defining_func (0), looking_at_function_handle (0),
18223
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032)
Michael C. Grant <mcg@cvxr.com>
parents: 17796
diff changeset
273 block_comment_nesting_level (0), command_arg_paren_count (0),
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032)
Michael C. Grant <mcg@cvxr.com>
parents: 17796
diff changeset
274 token_count (0), current_input_line (), comment_text (),
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032)
Michael C. Grant <mcg@cvxr.com>
parents: 17796
diff changeset
275 help_text (), string_text (), string_line (0), string_column (0),
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
276 fcn_file_name (), fcn_file_full_name (), looking_at_object_index (),
16207
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
277 parsed_function_name (), pending_local_variables (),
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
278 symtab_context (), nesting_level (), tokens ()
16193
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 init ();
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
281 }
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
282
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
283 ~lexical_feedback (void);
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
284
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
285 void init (void);
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
286
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
287 void reset (void);
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
288
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
289 int previous_token_value (void) const;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
290
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
291 bool previous_token_value_is (int tok_val) const;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
292
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
293 void mark_previous_token_trailing_space (void);
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
294
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
295 bool space_follows_previous_token (void) const;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
296
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
297 bool previous_token_is_binop (void) const;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
298
16267
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
299 bool previous_token_is_keyword (void) const;
15f55df088e7 6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16265
diff changeset
300
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
301 bool previous_token_may_be_command (void) const;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
302
16360
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
303 void maybe_mark_previous_token_as_variable (void);
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
304
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
305 void mark_as_variable (const std::string& nm);
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
306 void mark_as_variables (const std::list<std::string>& lst);
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
307
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
308 // 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
309 bool end_of_input;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
310
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
311 // 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
312 // command name is possible.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
313 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
314
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
315 // 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
316 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
317
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
318 // 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
319 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
320
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
321 // 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
322 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
323
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
324 // 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
325 // persistent).
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
326 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
327
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
328 // 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
329 // parameter list element.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
330 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
331
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
332 // 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
333 // multi-value assignment statement.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
334 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
335
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
336 // 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
337 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
338
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
339 // 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
340 // structure element.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
341 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
342
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
343 // 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
344 bool parsing_class_method;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
345
16211
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
346 // true means we are parsing a classdef file
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
347 bool parsing_classdef;
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
348
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
349 // 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
350 // 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
351 // 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
352 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
353
16211
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
354 // TRUE means we are parsing a classdef get.method.
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
355 bool parsing_classdef_get_method;
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
356
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
357 // TRUE means we are parsing a classdef set.method.
3449bf257514 maint: fix botched merge of default to classdef
John W. Eaton <jwe@octave.org>
parents: 16205
diff changeset
358 bool parsing_classdef_set_method;
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
359
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
360 // 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
361 bool quote_is_transpose;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
362
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
363 // TRUE means treat the current file as a script even if the first
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
364 // token is "function" or "classdef".
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
365 bool force_script;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
366
16199
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
367 // TRUE means we're parsing a function file.
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
368 bool reading_fcn_file;
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
369
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
370 // TRUE means we're parsing a script file.
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
371 bool reading_script_file;
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
372
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
373 // TRUE means we're parsing a classdef file.
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
374 bool reading_classdef_file;
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
375
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
376 // 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
377 int input_line_number;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
378
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
379 // 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
380 int current_input_column;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
381
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
382 // square bracket level count.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
383 int bracketflag;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
384
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
385 // curly brace level count.
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
386 int braceflag;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
387
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
388 // 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
389 int looping;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
390
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
391 // 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
392 int defining_func;
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
393
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
394 // 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
395 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
396
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
397 // 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
398 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
399
18223
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032)
Michael C. Grant <mcg@cvxr.com>
parents: 17796
diff changeset
400 // Parenthesis count for command argument parsing.
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032)
Michael C. Grant <mcg@cvxr.com>
parents: 17796
diff changeset
401 int command_arg_paren_count;
615fdd2238c1 improve compatibility of command syntax parsing (bug #41032)
Michael C. Grant <mcg@cvxr.com>
parents: 17796
diff changeset
402
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
403 // Count of tokens recognized by this lexer since initialized or
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
404 // since the last reset.
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
405 size_t token_count;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
406
16207
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
407 // The current line of input.
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
408 std::string current_input_line;
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
409
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
410 // The current comment text.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
411 std::string comment_text;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
412
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
413 // The current help text.
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
414 std::string help_text;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
415
16898
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
416 // The current character string text.
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
417 std::string string_text;
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
418
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
419 // The position of the beginning of the current character string.
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
420 int string_line;
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
421 int string_column;
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
422
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
423 // Simple name of function file we are reading.
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
424 std::string fcn_file_name;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
425
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
426 // Full name of file we are reading.
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
427 std::string fcn_file_full_name;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
428
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
429 // 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
430 // 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
431 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
432
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
433 // 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
434 // 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
435 // current_function_level > 0
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
436 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
437
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
438 // 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
439 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
440
16320
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
441 // Track current symbol table scope and context.
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
442 symbol_table_context symtab_context;
09f0cb9cac7d don't modify symbol table scope in the parser
John W. Eaton <jwe@octave.org>
parents: 16294
diff changeset
443
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
444 // is the closest nesting level a square bracket, squiggly brace,
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
445 // a paren, or an anonymous function body?
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
446 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
447
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
448 // Tokens generated by the lexer.
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
449 token_cache tokens;
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
450
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
451 private:
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
452
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
453 // No copying!
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
454
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
455 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
456
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
457 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
458 };
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
459
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
460 // octave_base_lexer inherits from lexical_feedback because we will
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
461 // 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
462 // intialize if everything is grouped in a parent class rather than
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
463 // listing all the members in the octave_base_lexer class.
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
464
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
465 class
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
466 octave_base_lexer : public lexical_feedback
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
467 {
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16185
diff changeset
468 public:
16104
c8974e28da59 move nesting_level to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16103
diff changeset
469
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
470 // Handle buffering of input for lexer.
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
471
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
472 class input_buffer
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
473 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
474 public:
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
475
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
476 input_buffer (void)
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
477 : 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
478 { }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
479
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
480 void fill (const std::string& input, bool eof_arg);
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
481
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
482 // 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
483 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
484
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
485 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
486
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
487 bool at_eof (void) const { return eof; }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
488
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
489 private:
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
490
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
491 std::string buffer;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
492 const char *pos;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
493 size_t chars_left;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
494 bool eof;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
495 };
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
496
17693
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
497 // Collect comment text.
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
498
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
499 class
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
500 comment_buffer
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
501 {
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
502 public:
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
503
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
504 comment_buffer (void) : comment_list (0) { }
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
505
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
506 ~comment_buffer (void) { delete comment_list; }
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
507
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
508 void append (const std::string& s, octave_comment_elt::comment_type t)
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
509 {
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
510 if (! comment_list)
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
511 comment_list = new octave_comment_list ();
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
512
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
513 comment_list->append (s, t);
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
514 }
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
515
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
516 // Caller is expected to delete the returned value.
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
517
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
518 octave_comment_list *get_comment (void)
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
519 {
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
520 octave_comment_list *retval = comment_list;
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
521
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
522 comment_list = 0;
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
523
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
524 return retval;
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
525 }
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
526
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
527 void reset (void)
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
528 {
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
529 delete comment_list;
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
530
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
531 comment_list = 0;
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
532 }
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
533
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
534 private:
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
535
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
536 octave_comment_list *comment_list;
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
537 };
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
538
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
539 octave_base_lexer (void)
17693
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
540 : lexical_feedback (), scanner (0), input_buf (), comment_buf ()
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
541 {
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
542 init ();
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
543 }
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
544
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
545 virtual ~octave_base_lexer (void);
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
546
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16139
diff changeset
547 void init (void);
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
548
16294
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
549 virtual bool is_push_lexer (void) const { return false; }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
550
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
551 virtual 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
552
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
553 void prep_for_file (void);
16124
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
554
16898
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
555 void begin_string (int state);
531473481084 rewrite string parsing to avoid unlimited lookahead
John W. Eaton <jwe@octave.org>
parents: 16360
diff changeset
556
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
557 virtual int fill_flex_buffer (char *buf, unsigned int max_size) = 0;
16120
4b68eb9b98b0 move octave_read lexer helper function to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
558
16294
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
559 bool at_end_of_buffer (void) const { return input_buf.empty (); }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
560
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
561 bool at_end_of_file (void) const { return input_buf.at_eof (); }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
562
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
563 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
564
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
565 char *flex_yytext (void);
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
566
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
567 int flex_yyleng (void);
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
568
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
569 int text_yyinput (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
570
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
571 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
572
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
573 void xunput (char c);
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
574
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
575 bool looking_at_space (void);
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
576
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
577 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
578
16360
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
579 bool is_variable (const std::string& name);
11115c237231 recognize variables when parsing (bug #38576)
John W. Eaton <jwe@octave.org>
parents: 16337
diff changeset
580
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
581 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
582
18520
932aca9a7c57 Allow multi-level classdef package.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 18226
diff changeset
583 bool fq_identifier_contains_keyword (const std::string& s);
932aca9a7c57 Allow multi-level classdef package.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 18226
diff changeset
584
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
585 bool whitespace_is_significant (void);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
586
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
587 void handle_number (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
588
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
589 void handle_continuation (void);
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
590
16337
6bfd8dbd7d3c don't swallow statements that follow comment lines (bug #38549)
John W. Eaton <jwe@octave.org>
parents: 16320
diff changeset
591 void finish_comment (octave_comment_elt::comment_type typ);
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
592
17693
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
593 octave_comment_list *get_comment (void) { return comment_buf.get_comment (); }
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
594
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
595 int handle_close_bracket (int bracket_type);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
596
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
597 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
598
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
599 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
600
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
601 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
602
18520
932aca9a7c57 Allow multi-level classdef package.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 18226
diff changeset
603 int handle_fq_identifier (void);
932aca9a7c57 Allow multi-level classdef package.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 18226
diff changeset
604
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
605 int handle_identifier (void);
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
606
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
607 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
608
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
609 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
610
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
611 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
612
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
613 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
614
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
615 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
616
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
617 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
618
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
619 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
620
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
621 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
622
16118
f8e463523229 move more static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16115
diff changeset
623 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
624
16129
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
625 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
626
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
627 void lexer_debug (const char *pattern);
16118
f8e463523229 move more static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16115
diff changeset
628
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16139
diff changeset
629 // 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
630 void *scanner;
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16139
diff changeset
631
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
632 // Object that reads and buffers input.
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
633 input_buffer input_buf;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
634
17693
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
635 // Object that collects comment text.
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
636 comment_buffer comment_buf;
efbe746f8fa8 eliminate octave_comment_buffer singleton
John W. Eaton <jwe@octave.org>
parents: 16898
diff changeset
637
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
638 virtual void increment_promptflag (void) = 0;
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
639
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
640 virtual void decrement_promptflag (void) = 0;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
641
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
642 virtual int promptflag (void) const = 0;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
643
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
644 virtual int promptflag (int) = 0;
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
645
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
646 virtual std::string input_source (void) const { return "unknown"; }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
647
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
648 virtual bool input_from_terminal (void) const { return false; }
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
649
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
650 virtual bool input_from_file (void) const { return false; }
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
651
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
652 virtual bool input_from_eval_string (void) const { return false; }
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
653
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
654 void push_start_state (int state);
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
655
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
656 void pop_start_state (void);
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
657
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
658 void clear_start_state (void);
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
659
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
660 int start_state (void) const { return start_state_stack.top (); }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
661
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
662 void display_start_state (void) const;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
663
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
664 int handle_op (const char *pattern, int tok, bool bos = false);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
665
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
666 int handle_incompatible_op (const char *pattern, int tok, bool bos = false);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
667
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
668 bool maybe_unput_comma_before_unary_op (int tok);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
669
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
670 int handle_unary_op (int tok, bool bos = false);
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
671
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
672 int handle_incompatible_unary_op (int tok, bool bos = false);
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
673
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
674 int handle_assign_op (const char *pattern, int tok);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
675
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
676 int handle_incompatible_assign_op (const char *pattern, int tok);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
677
16275
dd7de0345124 10/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16267
diff changeset
678 int handle_op_internal (int tok, bool bos, bool compat);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
679
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
680 int handle_token (const std::string& name, int tok);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
681
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
682 int handle_token (int tok, token *tok_val = 0);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
683
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
684 int count_token (int tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
685
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
686 int count_token_internal (int tok);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
687
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
688 int show_token (int tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
689
18520
932aca9a7c57 Allow multi-level classdef package.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 18226
diff changeset
690 void enable_fq_identifier (void);
932aca9a7c57 Allow multi-level classdef package.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 18226
diff changeset
691
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
692 protected:
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
693
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
694 std::stack<int> start_state_stack;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
695
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16107
diff changeset
696 // No copying!
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16107
diff changeset
697
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
698 octave_base_lexer (const octave_base_lexer&);
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
699
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
700 octave_base_lexer& operator = (const octave_base_lexer&);
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
701 };
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
702
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
703 class
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
704 octave_lexer : public octave_base_lexer
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
705 {
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
706 public:
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
707
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
708 octave_lexer (void)
17731
f79bf671a493 eliminate global LEXER variable
John W. Eaton <jwe@octave.org>
parents: 17693
diff changeset
709 : octave_base_lexer (), input_reader (this)
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
710 { }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
711
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
712 octave_lexer (FILE *file)
17731
f79bf671a493 eliminate global LEXER variable
John W. Eaton <jwe@octave.org>
parents: 17693
diff changeset
713 : octave_base_lexer (), input_reader (file, this)
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
714 { }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
715
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
716 octave_lexer (const std::string& eval_string)
17731
f79bf671a493 eliminate global LEXER variable
John W. Eaton <jwe@octave.org>
parents: 17693
diff changeset
717 : octave_base_lexer (), input_reader (eval_string, this)
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
718 { }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
719
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
720 void reset (void)
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
721 {
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
722 input_reader.reset ();
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
723
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
724 octave_base_lexer::reset ();
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
725 }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
726
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
727 void increment_promptflag (void) { input_reader.increment_promptflag (); }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
728
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
729 void decrement_promptflag (void) { input_reader.decrement_promptflag (); }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
730
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
731 int promptflag (void) const { return input_reader.promptflag (); }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
732
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
733 int promptflag (int n) { return input_reader.promptflag (n); }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
734
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
735 std::string input_source (void) const
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
736 {
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
737 return input_reader.input_source ();
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
738 }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
739
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
740 bool input_from_terminal (void) const
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
741 {
17733
8ad59bef27b5 use more direct method for checking input source for lexer
John W. Eaton <jwe@octave.org>
parents: 17731
diff changeset
742 return input_reader.input_from_terminal ();
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
743 }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
744
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
745 bool input_from_file (void) const
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
746 {
17733
8ad59bef27b5 use more direct method for checking input source for lexer
John W. Eaton <jwe@octave.org>
parents: 17731
diff changeset
747 return input_reader.input_from_file ();
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
748 }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
749
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
750 bool input_from_eval_string (void) const
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
751 {
17733
8ad59bef27b5 use more direct method for checking input source for lexer
John W. Eaton <jwe@octave.org>
parents: 17731
diff changeset
752 return input_reader.input_from_eval_string ();
16293
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
753 }
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
754
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
755 int fill_flex_buffer (char *buf, unsigned int max_size);
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
756
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
757 octave_input_reader input_reader;
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
758
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
759 protected:
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
760
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
761 // No copying!
57e87ddfee14 create base class for lexer
John W. Eaton <jwe@octave.org>
parents: 16292
diff changeset
762
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
763 octave_lexer (const octave_lexer&);
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16107
diff changeset
764
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16149
diff changeset
765 octave_lexer& operator = (const octave_lexer&);
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
766 };
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1315
diff changeset
767
16294
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
768 class
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
769 octave_push_lexer : public octave_base_lexer
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
770 {
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
771 public:
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
772
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
773 octave_push_lexer (const std::string& input = std::string (),
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
774 bool eof = false)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
775 : octave_base_lexer (), pflag (1)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
776 {
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
777 append_input (input, eof);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
778 }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
779
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
780 bool is_push_lexer (void) const { return true; }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
781
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
782 void reset (void)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
783 {
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
784 promptflag (1);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
785
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
786 octave_base_lexer::reset ();
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
787 }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
788
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
789 void append_input (const std::string& input, bool eof)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
790 {
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
791 input_buf.fill (input, eof);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
792 }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
793
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
794 void increment_promptflag (void) { pflag++; }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
795
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
796 void decrement_promptflag (void) { pflag--; }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
797
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
798 int promptflag (void) const { return pflag; }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
799
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
800 int promptflag (int n)
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
801 {
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
802 int retval = pflag;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
803 pflag = n;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
804 return retval;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
805 }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
806
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
807 std::string input_source (void) const { return "push buffer"; }
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
808
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
809 int fill_flex_buffer (char *buf, unsigned int max_size);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
810
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
811 protected:
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
812
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
813 int pflag;
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
814
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
815 // No copying!
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
816
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
817 octave_push_lexer (const octave_push_lexer&);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
818
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
819 octave_push_lexer& operator = (const octave_push_lexer&);
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
820 };
0925d1f6875e push parser/lexer interface
John W. Eaton <jwe@octave.org>
parents: 16293
diff changeset
821
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
822 #endif