annotate libinterp/parse-tree/lex.ll @ 16265:71ee3afedb69

5/10 commits reworking the lexer
author John W. Eaton <jwe@octave.org>
date Mon, 11 Mar 2013 14:29:19 -0400
parents 9acb86e6ac90
children 36e01847694f 15f55df088e7
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1 /*
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2
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3 Copyright (C) 1993-2012 John W. Eaton
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 /*
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24 We are using the pure parser interface and the reentrant lexer
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25 interface but the Octave parser and lexer are NOT properly
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26 reentrant because both still use many global variables. It should be
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27 safe to create a parser object and call it while anotehr parser
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28 object is active (to parse a callback function while the main
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29 interactive parser is waiting for input, for example) if you take
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30 care to properly save and restore (typically with an unwind_protect
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31 object) relevant global values before and after the nested call.
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32 */
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33
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34 %option prefix = "octave_"
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35 %option noyywrap
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36 %option reentrant
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37 %option bison-bridge
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38
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39 %top {
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40 #ifdef HAVE_CONFIG_H
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41 #include <config.h>
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42 #endif
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43
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44 }
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45
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46 %s COMMAND_START
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47 %s MATRIX_START
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48
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49 %x INPUT_FILE_START
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50
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51 %x BLOCK_COMMENT_START
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52 %x LINE_COMMENT_START
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53
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54 %x KLUGE
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55
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56 %{
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57
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58 #include <cctype>
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59 #include <cstring>
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60
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61 #include <iostream>
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62 #include <set>
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63 #include <sstream>
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64 #include <string>
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65 #include <stack>
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66
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67 #include <sys/types.h>
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68 #include <unistd.h>
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69
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70 #include "cmd-edit.h"
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71 #include "quit.h"
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72 #include "lo-mappers.h"
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73
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74 // These would be alphabetical, but oct-parse.h must be included before
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75 // oct-gperf.h and oct-parse.h must be included after token.h and the tree
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76 // class declarations. We can't include oct-parse.h in oct-gperf.h
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77 // because it may not be protected to allow it to be included multiple
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78 // times.
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79
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80 #include "Cell.h"
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81 #include "comment-list.h"
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82 #include "defun.h"
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83 #include "error.h"
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84 #include "gripes.h"
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85 #include "input.h"
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86 #include "lex.h"
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87 #include "ov.h"
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88 #include "parse.h"
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89 #include "parse-private.h"
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90 #include "pt-all.h"
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91 #include "symtab.h"
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92 #include "token.h"
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93 #include "toplev.h"
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94 #include "utils.h"
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95 #include "variables.h"
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96 #include <oct-parse.h>
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97 #include <oct-gperf.h>
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98
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99 #if defined (GNULIB_NAMESPACE)
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100 // Calls to the following functions appear in the generated output from
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101 // flex without the namespace tag. Redefine them so we will use them
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102 // via the gnulib namespace.
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103 #define fprintf GNULIB_NAMESPACE::fprintf
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104 #define fwrite GNULIB_NAMESPACE::fwrite
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105 #define isatty GNULIB_NAMESPACE::isatty
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106 #define malloc GNULIB_NAMESPACE::malloc
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107 #define realloc GNULIB_NAMESPACE::realloc
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108 #endif
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109
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110 #if ! (defined (FLEX_SCANNER) \
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111 && defined (YY_FLEX_MAJOR_VERSION) && YY_FLEX_MAJOR_VERSION >= 2 \
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112 && defined (YY_FLEX_MINOR_VERSION) && YY_FLEX_MINOR_VERSION >= 5)
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113 #error lex.l requires flex version 2.5.4 or later
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114 #endif
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115
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116 #define YY_EXTRA_TYPE octave_lexer *
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117 #define curr_lexer yyextra
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118
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119 // Arrange to get input via readline.
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120
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121 #ifdef YY_INPUT
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122 #undef YY_INPUT
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123 #endif
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124 #define YY_INPUT(buf, result, max_size) \
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125 result = curr_lexer->read (buf, max_size)
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126
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127 // Try to avoid crashing out completely on fatal scanner errors.
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128
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129 #ifdef YY_FATAL_ERROR
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130 #undef YY_FATAL_ERROR
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131 #endif
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132 #define YY_FATAL_ERROR(msg) \
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133 (yyget_extra (yyscanner))->fatal_error (msg)
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134
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135 static bool Vdisplay_tokens = false;
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136
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137 static unsigned int Vtoken_count = 0;
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138
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139 // Internal variable for lexer debugging state.
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140 static bool lexer_debug_flag = false;
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141
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142 // Forward declarations for functions defined at the bottom of this
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143 // file that are needed inside the lexer actions.
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144
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145 static std::string strip_trailing_whitespace (char *s);
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146
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147 %}
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148
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149 D [0-9]
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150 S [ \t]
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151 NL ((\n)|(\r)|(\r\n))
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152 CONT ((\.\.\.)|(\\))
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153 Im [iIjJ]
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154 CCHAR [#%]
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155 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*)
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156 EXPON ([DdEe][+-]?{D}+)
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157 NUMBER (({D}+\.?{D}*{EXPON}?)|(\.{D}+{EXPON}?)|(0[xX][0-9a-fA-F]+))
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158
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159 ANY_INCLUDING_NL (.|{NL})
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160
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161 %%
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162
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163 %{
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164 // Make script and function files start with a bogus token. This makes
25ed2d6aacf6 Parse nested functions more accurately.
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165 // the parser go down a special path.
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166 %}
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167
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168 <INPUT_FILE_START>{ANY_INCLUDING_NL} {
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169 curr_lexer->lexer_debug ("<INPUT_FILE_START>{ANY_INCLUDING_NL}");
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170
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171 curr_lexer->xunput (yytext[0]);
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172
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173 // May be reset later if we see "function" or "classdef" appears
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174 // as the first token.
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175 curr_lexer->reading_script_file = true;
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176
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177 curr_lexer->pop_start_state ();
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178
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179 return curr_lexer->show_token (INPUT_FILE);
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180 }
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181
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182 %{
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183 // Help and other command-style functions.
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184 %}
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185
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186 <COMMAND_START>{NL} {
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187 curr_lexer->lexer_debug ("<COMMAND_START>{NL}");
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188
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189 curr_lexer->input_line_number++;
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190 curr_lexer->current_input_column = 1;
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191
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192 curr_lexer->looking_for_object_index = false;
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193 curr_lexer->at_beginning_of_statement = true;
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194
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195 curr_lexer->pop_start_state ();
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196
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197 return curr_lexer->count_token ('\n');
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198 }
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199
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200 <COMMAND_START>[\;\,] {
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201 curr_lexer->lexer_debug ("<COMMAND_START>[\\;\\,]");
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202
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203 curr_lexer->looking_for_object_index = false;
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204 curr_lexer->at_beginning_of_statement = true;
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205
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206 curr_lexer->pop_start_state ();
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207
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208 if (strcmp (yytext, ",") == 0)
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209 return curr_lexer->handle_token (',');
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diff changeset
210 else
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211 return curr_lexer->handle_token (';');
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212 }
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213
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214 <COMMAND_START>[\"\'] {
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215 curr_lexer->lexer_debug ("<COMMAND_START>[\\\"\\']");
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216
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217 curr_lexer->at_beginning_of_statement = false;
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218
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219 curr_lexer->current_input_column++;
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220 int tok = curr_lexer->handle_string (yytext[0]);
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221
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222 return curr_lexer->count_token_internal (tok);
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223 }
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224
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225 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]*{S}* {
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diff changeset
226 curr_lexer->lexer_debug ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]*{S}*");
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227
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228 std::string tok = strip_trailing_whitespace (yytext);
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229
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230 curr_lexer->looking_for_object_index = false;
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231 curr_lexer->at_beginning_of_statement = false;
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232
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diff changeset
233 return curr_lexer->handle_token (tok, SQ_STRING);
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234 }
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235
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236 <MATRIX_START>{S}* {
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diff changeset
237 curr_lexer->lexer_debug ("<MATRIX_START>{S}*");
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238
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diff changeset
239 curr_lexer->mark_previous_token_trailing_space ();
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240 }
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241
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diff changeset
242 <MATRIX_START>{NL} {
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diff changeset
243 curr_lexer->lexer_debug ("<MATRIX_START>{NL}");
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244
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diff changeset
245 int tok = curr_lexer->previous_token_value ();
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246
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247 if (! (tok == ';' || tok == '[' || tok == '{'))
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248 curr_lexer->xunput (';');
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249 }
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250
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diff changeset
251 <KLUGE>@ {
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diff changeset
252 curr_lexer->lexer_debug ("<KLUGE>@");
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diff changeset
253 curr_lexer->pop_start_state ();
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254 return curr_lexer->count_token (CHOOSE_ASSIGNMENT);
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255 }
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diff changeset
256
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diff changeset
257 %{
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258 // For this and the next two rules, we're looking at ']', and we
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diff changeset
259 // need to know if the next token is '=' or '=='.
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260 //
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261 // It would have been so much easier if the delimiters were simply
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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262 // different for the expression on the left hand side of the equals
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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diff changeset
263 // operator.
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diff changeset
264 //
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
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diff changeset
265 // It's also a pain in the ass to decide whether to insert a comma
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
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diff changeset
266 // after seeing a ']' character...
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diff changeset
267
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diff changeset
268 // FIXME -- we need to handle block comments here.
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diff changeset
269 %}
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270
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diff changeset
271 <MATRIX_START>\] {
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diff changeset
272 curr_lexer->lexer_debug ("<MATRIX_START>\\]");
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diff changeset
273
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diff changeset
274 curr_lexer->looking_at_object_index.pop_front ();
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diff changeset
275
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diff changeset
276 curr_lexer->looking_for_object_index = true;
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diff changeset
277 curr_lexer->at_beginning_of_statement = false;
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diff changeset
278
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diff changeset
279 int tok_to_return = curr_lexer->handle_close_bracket (']');
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diff changeset
280
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diff changeset
281 return curr_lexer->count_token (']');
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diff changeset
282 }
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diff changeset
283
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284 %{
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285 // FIXME -- we need to handle block comments here.
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286 %}
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287
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288 <MATRIX_START>\} {
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289 curr_lexer->lexer_debug ("<MATRIX_START>\\}*");
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290
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291 curr_lexer->looking_at_object_index.pop_front ();
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292
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293 curr_lexer->looking_for_object_index = true;
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294 curr_lexer->at_beginning_of_statement = false;
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295
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296 int tok_to_return = curr_lexer->handle_close_bracket ('}');
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297
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298 return curr_lexer->count_token ('}');
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299 }
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300
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301 \[ {
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302 curr_lexer->lexer_debug ("\\[");
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303
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304 bool unput_comma = false;
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305
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306 if (curr_lexer->whitespace_is_significant ()
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307 && curr_lexer->space_follows_previous_token ())
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308 {
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309 int tok = curr_lexer->previous_token_value ();
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310
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311 if (! (tok == ';' || tok == ',' || tok == '[' || tok == '{'
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312 || curr_lexer->previous_token_is_binop ()))
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313 unput_comma = true;
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314 }
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315
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316 if (unput_comma)
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317 {
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318 yyless (0);
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319 curr_lexer->xunput (',');
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320 }
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321 else
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322 {
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323 curr_lexer->nesting_level.bracket ();
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324
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325 curr_lexer->looking_at_object_index.push_front (false);
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326
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327 curr_lexer->current_input_column += yyleng;
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328 curr_lexer->looking_for_object_index = false;
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329 curr_lexer->at_beginning_of_statement = false;
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330
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331 if (curr_lexer->defining_func
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332 && ! curr_lexer->parsed_function_name.top ())
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333 curr_lexer->looking_at_return_list = true;
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334 else
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335 curr_lexer->looking_at_matrix_or_assign_lhs = true;
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336
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337 curr_lexer->decrement_promptflag ();
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338
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339 curr_lexer->bracketflag++;
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340
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341 curr_lexer->push_start_state (MATRIX_START);
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342
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343 return curr_lexer->count_token ('[');
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344 }
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345 }
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346
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347 \] {
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348 curr_lexer->lexer_debug ("\\]");
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349
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350 curr_lexer->nesting_level.remove ();
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351
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352 curr_lexer->looking_at_object_index.pop_front ();
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353
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354 curr_lexer->looking_for_object_index = true;
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355 curr_lexer->at_beginning_of_statement = false;
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356
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357 return curr_lexer->handle_token (']');
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358 }
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359
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360 %{
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361 // Gobble comments.
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362 %}
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363
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364 %{
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365 // Start of a block comment. If the comment marker appears immediately
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366 // after a block of full-line comments, finish the full line comment
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367 // block.
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368 %}
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369
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370 ^{S}*{CCHAR}\{{S}*{NL} {
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371 curr_lexer->lexer_debug ("^{S}*{CCHAR}\{{S}*{NL}");
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372
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373 yyless (0);
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374
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375 if (curr_lexer->start_state () == LINE_COMMENT_START)
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376 {
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377 if (! curr_lexer->comment_text.empty ())
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378 curr_lexer->finish_comment (octave_comment_elt::full_line);
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379
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380 curr_lexer->pop_start_state ();
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381 }
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382
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383 curr_lexer->push_start_state (BLOCK_COMMENT_START);
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384
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385 }
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386
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387 <BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL} {
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388 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL}");
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389
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390 curr_lexer->input_line_number++;
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391 curr_lexer->current_input_column = 1;
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392
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393 if (curr_lexer->block_comment_nesting_level)
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394 curr_lexer->comment_text = "\n";
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395
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396 curr_lexer->block_comment_nesting_level++;
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397 }
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398
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399 %{
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400 // End of a block comment. If this block comment is nested inside
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401 // another, wait for the outermost block comment block to be closed
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402 // before storing the comment.
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403 %}
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404
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405 <BLOCK_COMMENT_START>^{S}*{CCHAR}\}{S}*{NL} {
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406 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\\}{S}*{NL}");
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407
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408 curr_lexer->input_line_number++;
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409 curr_lexer->current_input_column = 1;
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410
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411 if (curr_lexer->block_comment_nesting_level > 1)
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412 curr_lexer->comment_text = "\n";
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413 else
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414 curr_lexer->finish_comment (octave_comment_elt::block);
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415
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416 curr_lexer->block_comment_nesting_level--;
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417 curr_lexer->pop_start_state ();
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418 }
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419
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420 %{
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421 // Body of a block comment.
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422 %}
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423
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424 <BLOCK_COMMENT_START>.*{NL} {
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425 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>.*{NL}");
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426
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427 curr_lexer->input_line_number++;
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428 curr_lexer->current_input_column = 1;
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429 curr_lexer->comment_text += yytext;
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parents: 16224
diff changeset
430 }
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John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
431
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
432 %{
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
433 // Full-line or end-of-line comment.
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
434 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
435
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
436 {S}*{CCHAR}.*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
437 curr_lexer->lexer_debug ("{S}*{CCHAR}.*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
438
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
439 curr_lexer->push_start_state (LINE_COMMENT_START);
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
440 yyless (0);
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
441 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
442
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
443 <LINE_COMMENT_START>{S}*{CCHAR}.*{NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
444 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{S}*{CCHAR}.*{NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
445
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
446 bool full_line_comment = curr_lexer->current_input_column == 1;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
447 curr_lexer->input_line_number++;
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John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
448 curr_lexer->current_input_column = 1;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
449
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
450 bool have_space = false;
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
451 size_t len = yyleng;
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John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
452 size_t i = 0;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
453 while (i < len)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
454 {
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
455 char c = yytext[i];
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
456 if (c == ' ' || c == '\t')
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
457 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
458 have_space = true;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
459 i++;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
460 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
461 else
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
462 break;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
463 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
464
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
465 while (i < len)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
466 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
467 char c = yytext[i];
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
468 if (c == '#' || c == '%')
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
469 i++;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
470 else
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
471 break;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
472 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
473
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
474 curr_lexer->comment_text += &yytext[i];
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John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
475
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
476 if (! full_line_comment)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
477 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
478 if (have_space)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
479 curr_lexer->mark_previous_token_trailing_space ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
480
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
481 curr_lexer->finish_comment (octave_comment_elt::end_of_line);
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
482
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
483 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
484 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
485 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
486
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
487 %{
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John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
488 // End of a block of full-line comments.
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John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
489 %}
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
490
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
491 <LINE_COMMENT_START>{ANY_INCLUDING_NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
492 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{ANY_INCLUDING_NL}");
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
493
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
494 curr_lexer->xunput (yytext[0]);
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
495
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
496 curr_lexer->finish_comment (octave_comment_elt::full_line);
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
497
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
498 curr_lexer->pop_start_state ();
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
499 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
500
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
501 %{
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
502 // Imaginary numbers.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
503 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
504
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
505 {NUMBER}{Im} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
506 curr_lexer->lexer_debug ("{NUMBER}{Im}");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
507
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
508 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
509
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
510 if (curr_lexer->whitespace_is_significant ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
511 && curr_lexer->space_follows_previous_token ()
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
512 && ! (tok == '[' || tok == '{'
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
513 || curr_lexer->previous_token_is_binop ()))
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
514 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
515 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
516 unput (',');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
517 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
518 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
519 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
520 curr_lexer->handle_number ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
521 return curr_lexer->count_token_internal (IMAG_NUM);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
522 }
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
523 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
524
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
525 %{
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
526 // Real numbers. Don't grab the '.' part of a dot operator as part of
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
527 // the constant.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
528 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
529
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
530 {D}+/\.[\*/\\^\'] |
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
531 {NUMBER} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
532 curr_lexer->lexer_debug ("{D}+/\\.[\\*/\\^\\']|{NUMBER}");
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
533
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
534 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
535
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
536 if (curr_lexer->whitespace_is_significant ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
537 && curr_lexer->space_follows_previous_token ()
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
538 && ! (tok == '[' || tok == '{'
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
539 || curr_lexer->previous_token_is_binop ()))
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
540 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
541 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
542 unput (',');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
543 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
544 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
545 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
546 curr_lexer->handle_number ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
547 return curr_lexer->count_token_internal (NUM);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
548 }
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
549 }
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
550
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
551 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
552 // Eat whitespace. Whitespace inside matrix constants is handled by
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
553 // the <MATRIX_START> start state code above.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
554 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
555
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
556 {S}* {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
557 curr_lexer->current_input_column += yyleng;
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
558
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
559 curr_lexer->mark_previous_token_trailing_space ();
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
560 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
561
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
562 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
563 // Continuation lines. Allow comments after continuations.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
564 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
565
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
566 {CONT}{S}*{NL} |
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
567 {CONT}{S}*{CCHAR}.*{NL} {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
568 curr_lexer->lexer_debug ("{CONT}{S}*{NL}|{CONT}{S}*{CCHAR}.*{NL}");
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
569
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
570 curr_lexer->handle_continuation ();
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
571 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
572
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
573 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
574 // End of file.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
575 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
576
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
577 <<EOF>> {
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
578 return curr_lexer->handle_end_of_input ();
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
579 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
580
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
581 %{
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
582 // Identifiers.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
583 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
584
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
585 {IDENT} {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
586 curr_lexer->lexer_debug ("{IDENT}");
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
587
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
588 int tok = curr_lexer->previous_token_value ();
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
589
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
590 if (curr_lexer->whitespace_is_significant ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
591 && curr_lexer->space_follows_previous_token ()
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
592 && ! (tok == '[' || tok == '{'
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
593 || curr_lexer->previous_token_is_binop ()))
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
594 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
595 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
596 unput (',');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
597 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
598 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
599 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
600 if (! curr_lexer->looking_at_decl_list
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
601 && curr_lexer->previous_token_may_be_command ())
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
602 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
603 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
604 curr_lexer->push_start_state (COMMAND_START);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
605 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
606 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
607 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
608 int id_tok = curr_lexer->handle_identifier ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
609
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
610 if (id_tok >= 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
611 return curr_lexer->count_token_internal (id_tok);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
612 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
613 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
614 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
615
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
616 %{
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
617 // Superclass method identifiers.
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
618 %}
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
619
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
620 {IDENT}@{IDENT} |
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
621 {IDENT}@{IDENT}.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
622 curr_lexer->lexer_debug ("{IDENT}@{IDENT}|{IDENT}@{IDENT}.{IDENT}");
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
623
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
624 int id_tok = curr_lexer->handle_superclass_identifier ();
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
625
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
626 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
627 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
628 curr_lexer->looking_for_object_index = true;
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
629
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
630 return curr_lexer->count_token_internal (SUPERCLASSREF);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
631 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
632 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
633
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
634 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
635 // Metaclass query
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
636 %}
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
637
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
638 \?{IDENT} |
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
639 \?{IDENT}\.{IDENT} {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
640 curr_lexer->lexer_debug ("\\?{IDENT}|\\?{IDENT}\\.{IDENT}");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
641
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
642 int id_tok = curr_lexer->handle_meta_identifier ();
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
643
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
644 if (id_tok >= 0)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
645 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
646 curr_lexer->looking_for_object_index = true;
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
647
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
648 return curr_lexer->count_token_internal (METAQUERY);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
649 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
650 }
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
651
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
652 %{
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
653 // Function handles and superclass references
4342
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
654 %}
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
655
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
656 "@" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
657 curr_lexer->lexer_debug ("@");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
658
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
659 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
660
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
661 curr_lexer->looking_at_function_handle++;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
662 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
663 curr_lexer->at_beginning_of_statement = false;
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
664
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
665 return curr_lexer->count_token ('@');
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
666
4342
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
667 }
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
668
813effe14ee1 [project @ 2003-02-20 08:35:55 by jwe]
jwe
parents: 4323
diff changeset
669 %{
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
670 // A new line character. New line characters inside matrix constants
4208
e96f52432059 [project @ 2002-12-03 19:48:57 by jwe]
jwe
parents: 4198
diff changeset
671 // are handled by the <MATRIX_START> start state code above. If closest
985
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe]
jwe
parents: 975
diff changeset
672 // nesting is inside parentheses, don't return a row separator.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
673 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
674
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
675 {NL} {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
676 curr_lexer->lexer_debug ("{NL}");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
677
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
678 curr_lexer->input_line_number++;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
679 curr_lexer->current_input_column = 1;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
680
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
681 if (curr_lexer->nesting_level.none ())
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
682 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
683 curr_lexer->at_beginning_of_statement = true;
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
684 return curr_lexer->count_token ('\n');
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
685 }
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
686 else if (curr_lexer->nesting_level.is_paren ())
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
687 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
688 curr_lexer->at_beginning_of_statement = false;
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
689 curr_lexer->gripe_matlab_incompatible ("bare newline inside parentheses");
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
690 }
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
691 else if (curr_lexer->nesting_level.is_bracket_or_brace ())
985
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe]
jwe
parents: 975
diff changeset
692 return LEXICAL_ERROR;
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
693 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
694
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
695 %{
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
696 // Single quote can either be the beginning of a string or a transpose
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
697 // operator.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
698 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
699
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
700 "'" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
701 curr_lexer->lexer_debug ("'");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
702
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
703 int tok = curr_lexer->previous_token_value ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
704
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
705 bool transpose = false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
706
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
707 if (curr_lexer->whitespace_is_significant ())
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
708 {
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
709 if (curr_lexer->space_follows_previous_token ())
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
710 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
711 if (tok == '[' || tok == '{'
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
712 || curr_lexer->previous_token_is_binop ())
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
713 {
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
714 curr_lexer->current_input_column++;
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
715 int retval = curr_lexer->handle_string ('\'');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
716 return curr_lexer->count_token_internal (retval);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
717 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
718 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
719 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
720 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
721 curr_lexer->xunput (',');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
722 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
723 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
724 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
725 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
726 if (tok == ',' || tok == ';' || tok == '[' || tok == '{'
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
727 || curr_lexer->previous_token_is_binop ())
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
728 {
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
729 curr_lexer->current_input_column++;
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
730 int retval = curr_lexer->handle_string ('\'');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
731 return curr_lexer->count_token_internal (retval);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
732 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
733 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
734 return curr_lexer->count_token (QUOTE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
735 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
736 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
737 else
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
738 {
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
739 if (tok == NAME || tok == NUM || tok == IMAG_NUM
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
740 || tok == ')' || tok == ']' || tok == '}')
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
741 return curr_lexer->count_token (QUOTE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
742 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
743 {
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
744 curr_lexer->current_input_column++;
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
745 int retval = curr_lexer->handle_string ('\'');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
746 return curr_lexer->count_token_internal (retval);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
747 }
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
748 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
749 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
750
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
751 %{
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
752 // Double quotes always begin strings.
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
753 %}
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
754
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
755 \" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
756 curr_lexer->lexer_debug ("\"");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
757
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
758 int tok = curr_lexer->previous_token_value ();
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
759
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
760 bool transpose = false;
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
761
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
762 if (curr_lexer->whitespace_is_significant ())
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
763 {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
764 if (curr_lexer->space_follows_previous_token ())
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
765 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
766 if (tok == ',' || tok == ';' || tok == '[' || tok == '{'
16261
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
767 || curr_lexer->previous_token_is_binop ())
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
768 {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
769 curr_lexer->current_input_column++;
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
770 int retval = curr_lexer->handle_string ('"');
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
771 return curr_lexer->count_token_internal (retval);
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
772 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
773 else
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
774 {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
775 yyless (0);
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
776 curr_lexer->xunput (',');
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
777 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
778 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
779 else
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
780 {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
781 curr_lexer->current_input_column++;
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
782 int retval = curr_lexer->handle_string ('"');
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
783 return curr_lexer->count_token_internal (retval);
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
784 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
785 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
786 else
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
787 {
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
788 curr_lexer->current_input_column++;
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
789 int retval = curr_lexer->handle_string ('"');
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
790 return curr_lexer->count_token_internal (retval);
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
791 }
b45a90cdb0ae 3/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16259
diff changeset
792 }
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
793
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
794 %{
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
795 // Other operators.
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
796 %}
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
797
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
798 ":" { return curr_lexer->handle_op (":", ':'); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
799 ".+" { return curr_lexer->handle_incompatible_op (".+", EPLUS); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
800 ".-" { return curr_lexer->handle_incompatible_op (".-", EMINUS); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
801 ".*" { return curr_lexer->handle_op (".*", EMUL); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
802 "./" { return curr_lexer->handle_op ("./", EDIV); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
803 ".\\" { return curr_lexer->handle_op (".\\", ELEFTDIV); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
804 ".^" { return curr_lexer->handle_op (".^", EPOW); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
805 ".**" { return curr_lexer->handle_incompatible_op (".**", EPOW); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
806 "<=" { return curr_lexer->handle_op ("<=", EXPR_LE); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
807 "==" { return curr_lexer->handle_op ("==", EXPR_EQ); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
808 "~=" { return curr_lexer->handle_op ("~=", EXPR_NE); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
809 "!=" { return curr_lexer->handle_incompatible_op ("!=", EXPR_NE); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
810 ">=" { return curr_lexer->handle_op (">=", EXPR_GE); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
811 "&" { return curr_lexer->handle_op ("&", EXPR_AND); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
812 "|" { return curr_lexer->handle_op ("|", EXPR_OR); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
813 "<" { return curr_lexer->handle_op ("<", EXPR_LT); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
814 ">" { return curr_lexer->handle_op (">", EXPR_GT); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
815 "*" { return curr_lexer->handle_op ("*", '*'); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
816 "/" { return curr_lexer->handle_op ("/", '/'); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
817 "\\" { return curr_lexer->handle_op ("\\", LEFTDIV); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
818 "^" { return curr_lexer->handle_op ("^", POW); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
819 "**" { return curr_lexer->handle_incompatible_op ("**", POW); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
820 "&&" { return curr_lexer->handle_op ("&&", EXPR_AND_AND); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
821 "||" { return curr_lexer->handle_op ("||", EXPR_OR_OR); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
822 "<<" { return curr_lexer->handle_incompatible_op ("<<", LSHIFT); }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
823 ">>" { return curr_lexer->handle_incompatible_op (">>", RSHIFT); }
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
824
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
825 ";" {
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
826 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
827 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
828 || curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
829
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
830 return curr_lexer->handle_op (";", ';', true, at_beginning_of_statement);
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
831 }
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
832
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
833 "+" {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
834 int tok = curr_lexer->handle_unary_op ("+", '+');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
835
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
836 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
837 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
838 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
839 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
840 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
841 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
842 return tok;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
843 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
844
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
845 "-" {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
846 int prev_tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
847 bool space_before = curr_lexer->space_follows_previous_token ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
848 int c = curr_lexer->text_yyinput ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
849 curr_lexer->xunput (c);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
850 bool space_after = (c == ' ' || c == '\t');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
851
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
852 if (space_before && ! space_after
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
853 && curr_lexer->previous_token_may_be_command ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
854 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
855 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
856 curr_lexer->push_start_state (COMMAND_START);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
857 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
858 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
859 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
860 int tok = curr_lexer->handle_unary_op ("-", '-');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
861
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
862 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
863 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
864 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
865 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
866 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
867 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
868 return tok;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
869 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
870 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
871
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
872 "~" {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
873 int tok = curr_lexer->handle_unary_op ("~", EXPR_NOT);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
874
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
875 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
876 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
877 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
878 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
879 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
880 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
881 return tok;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
882 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
883
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
884 "!" {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
885 int tok = curr_lexer->handle_incompatible_unary_op ("!", EXPR_NOT);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
886
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
887 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
888 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
889 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
890 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
891 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
892 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
893 return tok;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
894 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
895
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
896 "," {
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
897 bool at_beginning_of_statement
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
898 = (! (curr_lexer->whitespace_is_significant ()
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
899 || curr_lexer->looking_at_object_index.front ()));
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
900
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
901 return curr_lexer->handle_op
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
902 (",", ',', true, at_beginning_of_statement);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
903 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
904
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
905 ".'" {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
906 return curr_lexer->handle_op (".'", TRANSPOSE, true, false);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
907 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
908
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
909 "++" {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
910 int tok = curr_lexer->handle_incompatible_unary_op
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
911 ("++", PLUS_PLUS, true, false, true);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
912
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
913 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
914 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
915 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
916 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
917 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
918 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
919 return tok;
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
920 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
921
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
922 "--" {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
923 int tok = curr_lexer->handle_incompatible_unary_op
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
924 ("--", MINUS_MINUS, true, false, true);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
925
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
926 if (tok < 0)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
927 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
928 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
929 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
930 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
931 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
932 return tok;
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
933 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
934
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
935 "(" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
936 curr_lexer->lexer_debug ("(");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
937
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
938 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
939
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
940 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
941 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
942 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
943 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
944
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
945 if (! (tok == ';' || tok == ',' || tok == '[' || tok == '{'
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
946 || curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
947 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
948 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
949
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
950 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
951 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
952 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
953 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
954 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
955 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
956 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
957 // If we are looking for an object index, then push TRUE for
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
958 // looking_at_object_index. Otherwise, just push whatever state
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
959 // is current (so that we can pop it off the stack when we find
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
960 // the matching close paren).
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
961
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
962 curr_lexer->looking_at_object_index.push_front
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
963 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
964
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
965 curr_lexer->looking_at_indirect_ref = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
966 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
967 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
968
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
969 curr_lexer->nesting_level.paren ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
970 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
971
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
972 return curr_lexer->handle_token ('(');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
973 }
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
974 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
975
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
976 ")" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
977 curr_lexer->lexer_debug (")");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
978
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
979 curr_lexer->nesting_level.remove ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
980 curr_lexer->current_input_column++;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
981
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
982 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
983
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
984 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
985 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
986
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
987 if (curr_lexer->looking_at_anon_fcn_args)
16265
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
988 {
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
989 curr_lexer->looking_at_anon_fcn_args = false;
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
990 curr_lexer->nesting_level.anon_fcn_body ();
71ee3afedb69 5/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16263
diff changeset
991 }
13237
1bfca2bbea8b fix parsing of anonymous functions inside cell array lists.
John W. Eaton <jwe@octave.org>
parents: 12801
diff changeset
992
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
993 return curr_lexer->count_token (')');
967
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
994 }
b228d6cd59a1 [project @ 1994-12-10 00:15:41 by jwe]
jwe
parents: 947
diff changeset
995
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
996 "." {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
997 curr_lexer->lexer_debug (".");
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
998
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
999 curr_lexer->looking_for_object_index = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1000 curr_lexer->at_beginning_of_statement = false;
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1001
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1002 return curr_lexer->handle_token ('.');
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1003 }
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1004
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1005 %{
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1006 // = and op= operators.
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1007 %}
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1008
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1009 "=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1010 int tok = curr_lexer->handle_assign_op ("=", '=');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1011 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1012 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1013 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1014 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1015 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1016 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1017 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1018 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1019 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1020
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1021 "+=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1022 int tok = curr_lexer->handle_incompatible_assign_op ("+=", ADD_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1023 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1024 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1025 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1026 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1027 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1028 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1029 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1030 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1031 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1032
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1033 "-=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1034 int tok = curr_lexer->handle_incompatible_assign_op ("-=", SUB_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1035 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1036 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1037 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1038 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1039 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1040 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1041 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1042 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1043 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1044
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1045 "*=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1046 int tok = curr_lexer->handle_incompatible_assign_op ("*=", MUL_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1047 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1048 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1049 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1050 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1051 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1052 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1053 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1054 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1055 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1056
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1057 "/=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1058 int tok = curr_lexer->handle_incompatible_assign_op ("/=", DIV_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1059 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1060 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1061 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1062 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1063 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1064 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1065 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1066 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1067 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1068
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1069 "\\=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1070 int tok = curr_lexer->handle_incompatible_assign_op ("\\=", LEFTDIV_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1071 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1072 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1073 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1074 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1075 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1076 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1077 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1078 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1079 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1080
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1081 ".+=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1082 int tok = curr_lexer->handle_incompatible_assign_op (".+=", ADD_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1083 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1084 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1085 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1086 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1087 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1088 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1089 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1090 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1091 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1092
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1093 ".-=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1094 int tok = curr_lexer->handle_incompatible_assign_op (".-=", SUB_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1095 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1096 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1097 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1098 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1099 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1100 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1101 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1102 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1103 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1104
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1105 ".*=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1106 int tok = curr_lexer->handle_incompatible_assign_op (".*=", EMUL_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1107 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1108 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1109 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1110 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1111 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1112 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1113 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1114 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1115 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1116
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1117 "./=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1118 int tok = curr_lexer->handle_incompatible_assign_op ("./=", EDIV_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1119 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1120 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1121 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1122 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1123 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1124 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1125 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1126 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1127 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1128
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1129 ".\\=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1130 int tok = curr_lexer->handle_incompatible_assign_op (".\\=", ELEFTDIV_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1131 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1132 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1133 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1134 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1135 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1136 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1137 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1138 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1139 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1140
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1141 "^=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1142 int tok = curr_lexer->handle_incompatible_assign_op ("^=", POW_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1143 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1144 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1145 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1146 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1147 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1148 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1149 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1150 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1151 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1152
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1153 "**=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1154 int tok = curr_lexer->handle_incompatible_assign_op ("^=", POW_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1155 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1156 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1157 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1158 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1159 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1160 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1161 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1162 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1163 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1164
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1165 ".^=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1166 int tok = curr_lexer->handle_incompatible_assign_op (".^=", EPOW_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1167 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1168 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1169 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1170 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1171 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1172 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1173 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1174 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1175 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1176
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1177 ".**=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1178 int tok = curr_lexer->handle_incompatible_assign_op (".^=", EPOW_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1179 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1180 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1181 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1182 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1183 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1184 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1185 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1186 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1187 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1188
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1189 "&=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1190 int tok = curr_lexer->handle_incompatible_assign_op ("&=", AND_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1191 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1192 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1193 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1194 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1195 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1196 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1197 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1198 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1199 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1200
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1201 "|=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1202 int tok = curr_lexer->handle_incompatible_assign_op ("|=", OR_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1203 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1204 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1205 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1206 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1207 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1208 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1209 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1210 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1211 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1212
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1213 "<<=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1214 int tok = curr_lexer->handle_incompatible_assign_op ("<<=", LSHIFT_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1215 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1216 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1217 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1218 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1219 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1220 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1221 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1222 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1223 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1224
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1225 ">>=" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1226 int tok = curr_lexer->handle_incompatible_assign_op (">>=", RSHIFT_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1227 if (tok < 0)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1228 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1229 yyless (0);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1230 curr_lexer->xunput ('@');
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1231 curr_lexer->push_start_state (KLUGE);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1232 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1233 else
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1234 return tok;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1235 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1236
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1237 "{" {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1238 curr_lexer->lexer_debug ("{");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1239
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1240 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1241
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1242 if (curr_lexer->whitespace_is_significant ()
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1243 && curr_lexer->space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1244 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1245 int tok = curr_lexer->previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1246
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1247 if (! (tok == ';' || tok == ',' || tok == '[' || tok == '{'
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1248 || curr_lexer->previous_token_is_binop ()))
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1249 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1250 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1251
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1252 if (unput_comma)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1253 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1254 yyless (0);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1255 curr_lexer->xunput (',');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1256 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1257 else
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1258 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1259 curr_lexer->nesting_level.brace ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1260
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1261 curr_lexer->looking_at_object_index.push_front
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1262 (curr_lexer->looking_for_object_index);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1264 curr_lexer->current_input_column += yyleng;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1265 curr_lexer->looking_for_object_index = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1266 curr_lexer->at_beginning_of_statement = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1267
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1268 curr_lexer->decrement_promptflag ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1269
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1270 curr_lexer->braceflag++;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1271
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1272 curr_lexer->push_start_state (MATRIX_START);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1273
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1274 return curr_lexer->count_token ('{');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
1275 }
3351
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1276 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1277
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1278 "}" {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1279 curr_lexer->lexer_debug ("}");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1280
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1281 curr_lexer->looking_at_object_index.pop_front ();
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1282
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1283 curr_lexer->looking_for_object_index = true;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1284 curr_lexer->at_beginning_of_statement = false;
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1285
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1286 curr_lexer->nesting_level.remove ();
3351
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1287
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1288 return curr_lexer->handle_token ('}');
3351
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1289 }
8623649c967c [project @ 1999-11-15 16:17:01 by jwe]
jwe
parents: 3332
diff changeset
1290
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
1291 %{
2066
a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe]
jwe
parents: 2042
diff changeset
1292 // Unrecognized input is a lexical error.
968
9351572b7210 [project @ 1994-12-11 21:53:00 by jwe]
jwe
parents: 967
diff changeset
1293 %}
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1294
2042
31f4f775b8c6 [project @ 1996-03-28 09:06:28 by jwe]
jwe
parents: 1994
diff changeset
1295 . {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1296 curr_lexer->lexer_debug (".");
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1297
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1298 curr_lexer->xunput (yytext[0]);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1299
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1300 int c = curr_lexer->text_yyinput ();
4248
eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe]
jwe
parents: 4241
diff changeset
1301
eef64f3f9a4c [project @ 2002-12-31 00:00:20 by jwe]
jwe
parents: 4241
diff changeset
1302 if (c != EOF)
4240
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe]
jwe
parents: 4238
diff changeset
1303 {
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1304 curr_lexer->current_input_column++;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1305
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
1306 error ("invalid character '%s' (ASCII %d) near line %d, column %d",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1307 undo_string_escape (static_cast<char> (c)), c,
16110
7302f8a4df83 use pointer for global lexical_feedback structure
John W. Eaton <jwe@octave.org>
parents: 16106
diff changeset
1308 curr_lexer->input_line_number, curr_lexer->current_input_column);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1309
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1310 return LEXICAL_ERROR;
4240
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe]
jwe
parents: 4238
diff changeset
1311 }
8627d992beb8 [project @ 2002-12-25 23:07:03 by jwe]
jwe
parents: 4238
diff changeset
1312 else
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
1313 return curr_lexer->handle_end_of_input ();
2066
a75d2a5d6783 [project @ 1996-04-11 21:20:43 by jwe]
jwe
parents: 2042
diff changeset
1314 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1315
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1316 %%
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1317
8447
adab48231a03 make input_line_number work again
John W. Eaton <jwe@octave.org>
parents: 8312
diff changeset
1318 static void
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1319 display_character (char c)
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1320 {
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1321 if (isgraph (c))
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1322 std::cerr << c;
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1323 else
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1324 switch (c)
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1325 {
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1326 case 0:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1327 std::cerr << "NUL";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1328 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1329
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1330 case 1:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1331 std::cerr << "SOH";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1332 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1333
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1334 case 2:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1335 std::cerr << "STX";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1336 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1337
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1338 case 3:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1339 std::cerr << "ETX";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1340 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1341
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1342 case 4:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1343 std::cerr << "EOT";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1344 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1345
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1346 case 5:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1347 std::cerr << "ENQ";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1348 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1349
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1350 case 6:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1351 std::cerr << "ACK";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1352 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1353
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1354 case 7:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1355 std::cerr << "\\a";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1356 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1357
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1358 case 8:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1359 std::cerr << "\\b";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1360 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1361
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1362 case 9:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1363 std::cerr << "\\t";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1364 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1365
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1366 case 10:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1367 std::cerr << "\\n";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1368 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1369
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1370 case 11:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1371 std::cerr << "\\v";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1372 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1373
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1374 case 12:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1375 std::cerr << "\\f";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1376 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1377
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1378 case 13:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1379 std::cerr << "\\r";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1380 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1381
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1382 case 14:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1383 std::cerr << "SO";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1384 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1385
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1386 case 15:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1387 std::cerr << "SI";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1388 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1389
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1390 case 16:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1391 std::cerr << "DLE";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1392 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1393
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1394 case 17:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1395 std::cerr << "DC1";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1396 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1397
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1398 case 18:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1399 std::cerr << "DC2";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1400 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1401
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1402 case 19:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1403 std::cerr << "DC3";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1404 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1405
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1406 case 20:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1407 std::cerr << "DC4";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1408 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1409
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1410 case 21:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1411 std::cerr << "NAK";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1412 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1413
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1414 case 22:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1415 std::cerr << "SYN";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1416 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1417
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1418 case 23:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1419 std::cerr << "ETB";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1420 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1421
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1422 case 24:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1423 std::cerr << "CAN";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1424 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1425
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1426 case 25:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1427 std::cerr << "EM";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1428 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1429
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1430 case 26:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1431 std::cerr << "SUB";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1432 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1433
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1434 case 27:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1435 std::cerr << "ESC";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1436 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1437
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1438 case 28:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1439 std::cerr << "FS";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1440 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1441
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1442 case 29:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1443 std::cerr << "GS";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1444 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1445
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1446 case 30:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1447 std::cerr << "RS";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1448 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1449
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1450 case 31:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1451 std::cerr << "US";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1452 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1453
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1454 case 32:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1455 std::cerr << "SPACE";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1456 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1457
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1458 case 127:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1459 std::cerr << "DEL";
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
1460 break;
8535
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1461 }
75e6ab186761 lexer debugging functions
John W. Eaton <jwe@octave.org>
parents: 8504
diff changeset
1462 }
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
1463
13973
2c664266e9d0 clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents: 13260
diff changeset
1464 void
2c664266e9d0 clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents: 13260
diff changeset
1465 cleanup_parser (void)
2c664266e9d0 clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents: 13260
diff changeset
1466 {
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1467 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
1468
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1469 // Return 1 if the given character matches any character in the given
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1470 // string.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1471
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1472 static bool
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1473 match_any (char c, const char *s)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1474 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1475 char tmp;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1476 while ((tmp = *s++) != '\0')
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1477 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1478 if (c == tmp)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1479 return true;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1480 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1481 return false;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1482 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1483
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1484 // Given information about the spacing surrounding an operator,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1485 // return 1 if it looks like it should be treated as a binary
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1486 // operator. For example,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1487 //
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1488 // [ 1 + 2 ] or [ 1+ 2] or [ 1+2 ] ==> binary
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1489 //
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1490 // [ 1 +2 ] ==> unary
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1491
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1492 static bool
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1493 looks_like_bin_op (bool spc_prev, int next_char)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1494 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1495 bool spc_next = (next_char == ' ' || next_char == '\t');
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1496
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1497 return ((spc_prev && spc_next) || ! spc_prev);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1498 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1499
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1500 bool
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1501 is_keyword (const std::string& s)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1502 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1503 // Parsing function names like "set.property_name" inside
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1504 // classdef-style class definitions is simplified by handling the
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1505 // "set" and "get" portions of the names using the same mechanism as
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1506 // is used for keywords. However, they are not really keywords in
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1507 // the language, so omit them from the list of possible keywords.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1508
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1509 return (octave_kw_hash::in_word_set (s.c_str (), s.length ()) != 0
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1510 && ! (s == "set" || s == "get"));
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1511 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1512
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1513 DEFUN (iskeyword, args, ,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1514 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1515 @deftypefn {Built-in Function} {} iskeyword ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1516 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1517 Return true if @var{name} is an Octave keyword. If @var{name}\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1518 is omitted, return a list of keywords.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1519 @seealso{isvarname, exist}\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1520 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1521 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1522 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1523
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1524 int argc = args.length () + 1;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1525
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1526 string_vector argv = args.make_argv ("iskeyword");
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1527
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1528 if (error_state)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1529 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1530
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1531 if (argc == 1)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1532 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1533 // Neither set and get are keywords. See the note in the
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1534 // is_keyword function for additional details.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1535
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1536 string_vector lst (TOTAL_KEYWORDS);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1537
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1538 int j = 0;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1539
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1540 for (int i = 0; i < TOTAL_KEYWORDS; i++)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1541 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1542 std::string tmp = wordlist[i].name;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1543
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1544 if (! (tmp == "set" || tmp == "get"))
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1545 lst[j++] = tmp;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1546 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1547
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1548 lst.resize (j);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1549
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1550 retval = Cell (lst.sort ());
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1551 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1552 else if (argc == 2)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1553 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1554 retval = is_keyword (argv[1]);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1555 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1556 else
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1557 print_usage ();
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1558
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1559 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1560 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1561
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1562 /*
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1563
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1564 %!assert (iskeyword ("for"))
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1565 %!assert (iskeyword ("fort"), false)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1566 %!assert (iskeyword ("fft"), false)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1567
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1568 */
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1569
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1570 // Used to delete trailing white space from tokens.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1571
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1572 static std::string
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1573 strip_trailing_whitespace (char *s)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1574 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1575 std::string retval = s;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1576
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1577 size_t pos = retval.find_first_of (" \t");
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1578
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1579 if (pos != std::string::npos)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1580 retval.resize (pos);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1581
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1582 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1583 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1584
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1585 DEFUN (__display_tokens__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1586 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1587 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1588 Query or set the internal variable that determines whether Octave's\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1589 lexer displays tokens as they are read.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1590 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1591 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1592 return SET_INTERNAL_VARIABLE (display_tokens);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1593 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1594
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1595 DEFUN (__token_count__, , ,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1596 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1597 @deftypefn {Built-in Function} {} __token_count__ ()\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1598 Number of language tokens processed since Octave startup.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1599 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1600 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1601 return octave_value (Vtoken_count);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1602 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1603
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1604 DEFUN (__lexer_debug_flag__, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1605 "-*- texinfo -*-\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1606 @deftypefn {Built-in Function} {@var{old_val} =} __lexer_debug_flag__ (@var{new_val}))\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1607 Undocumented internal function.\n\
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1608 @end deftypefn")
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1609 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1610 octave_value retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1611
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1612 retval = set_internal_variable (lexer_debug_flag, args, nargout,
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1613 "__lexer_debug_flag__");
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1614
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1615 return retval;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1616 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1617
16117
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1618 class
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1619 flex_stream_reader : public stream_reader
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1620 {
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1621 public:
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1622 flex_stream_reader (octave_lexer *l, char *buf_arg)
16117
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1623 : stream_reader (), lexer (l), buf (buf_arg)
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1624 { }
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1625
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1626 int getc (void) { return lexer->text_yyinput (); }
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1627 int ungetc (int c) { lexer->xunput (c, buf); return 0; }
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1628
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1629 private:
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1630
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1631 // No copying!
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1632
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1633 flex_stream_reader (const flex_stream_reader&);
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1634
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1635 flex_stream_reader& operator = (const flex_stream_reader&);
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1636
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1637 octave_lexer *lexer;
16117
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1638
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1639 char *buf;
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1640 };
771186909285 maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16116
diff changeset
1641
16193
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16183
diff changeset
1642 lexical_feedback::~lexical_feedback (void)
d7392bf42fd1 use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents: 16183
diff changeset
1643 {
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
1644 tokens.clear ();
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1645 }
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1646
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1647 void
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1648 lexical_feedback::init (void)
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1649 {
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1650 // The closest paren, brace, or bracket nesting is not an object
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1651 // index.
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1652 looking_at_object_index.push_front (false);
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1653 }
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1654
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1655 void
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1656 lexical_feedback::reset (void)
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1657 {
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1658 end_of_input = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1659 at_beginning_of_statement = true;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1660 looking_at_anon_fcn_args = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1661 looking_at_return_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1662 looking_at_parameter_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1663 looking_at_decl_list = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1664 looking_at_initializer_expression = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1665 looking_at_matrix_or_assign_lhs = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1666 looking_for_object_index = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1667 looking_at_indirect_ref = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1668 parsing_class_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1669 maybe_classdef_get_set_method = false;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1670 parsing_classdef = false;
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1671 force_script = false;
16199
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
1672 reading_fcn_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
1673 reading_script_file = false;
810a71122c25 move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16195
diff changeset
1674 reading_classdef_file = false;
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1675 input_line_number = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1676 current_input_column = 1;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1677 bracketflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1678 braceflag = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1679 looping = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1680 defining_func = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1681 looking_at_function_handle = 0;
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1682 block_comment_nesting_level = 0;
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1683 token_count = 0;
16207
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
1684 current_input_line = "";
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1685 comment_text = "";
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1686 help_text = "";
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1687 fcn_file_name = "";
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1688 fcn_file_full_name = "";
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1689 looking_at_object_index.clear ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1690 looking_at_object_index.push_front (false);
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1691
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1692 while (! parsed_function_name.empty ())
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1693 parsed_function_name.pop ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1694
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1695 pending_local_variables.clear ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1696
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1697 nesting_level.reset ();
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1698
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
1699 tokens.clear ();
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1700 }
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1701
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1702 int
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1703 lexical_feedback::previous_token_value (void) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1704 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1705 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1706 return tok ? tok->token_value () : 0;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1707 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1708
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1709 bool
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1710 lexical_feedback::previous_token_value_is (int tok_val) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1711 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1712 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1713 return tok ? tok->token_value_is (tok_val) : false;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1714 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1715
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1716 void
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1717 lexical_feedback::mark_previous_token_trailing_space (void)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1718 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1719 token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1720 if (tok && ! previous_token_value_is ('\n'))
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1721 tok->mark_trailing_space ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1722 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1723
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1724 bool
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1725 lexical_feedback::space_follows_previous_token (void) const
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1726 {
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1727 const token *tok = tokens.front ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1728 return tok ? tok->space_follows_token () : false;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1729 }
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
1730
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1731 bool
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1732 lexical_feedback::previous_token_is_binop (void) const
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1733 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1734 int tok = previous_token_value ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1735
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John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1736 return (tok == '+' || tok == '-' || tok == '@'
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1737 || tok == ',' || tok == ';' || tok == '*' || tok == '/'
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1738 || tok == ':' || tok == '=' || tok == ADD_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1739 || tok == AND_EQ || tok == DIV_EQ || tok == EDIV
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1740 || tok == EDIV_EQ || tok == ELEFTDIV || tok == ELEFTDIV_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1741 || tok == EMINUS || tok == EMUL || tok == EMUL_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1742 || tok == EPOW || tok == EPOW_EQ || tok == EXPR_AND
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1743 || tok == EXPR_AND_AND || tok == EXPR_EQ || tok == EXPR_GE
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1744 || tok == EXPR_GT || tok == EXPR_LE || tok == EXPR_LT
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1745 || tok == EXPR_NE || tok == EXPR_NOT || tok == EXPR_OR
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1746 || tok == EXPR_OR_OR || tok == LEFTDIV || tok == LEFTDIV_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1747 || tok == LSHIFT || tok == LSHIFT_EQ || tok == MUL_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1748 || tok == OR_EQ || tok == POW || tok == POW_EQ
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1749 || tok == RSHIFT || tok == RSHIFT_EQ || tok == SUB_EQ);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1750 }
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John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1751
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John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1752 bool
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John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1753 lexical_feedback::previous_token_may_be_command (void) const
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1754 {
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John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1755 const token *tok = tokens.front ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1756 return tok ? tok->may_be_command () : false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1757 }
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John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
1758
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1759 static bool
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1760 looks_like_copyright (const std::string& s)
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1761 {
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1762 bool retval = false;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1763
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1764 if (! s.empty ())
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1765 {
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1766 size_t offset = s.find_first_not_of (" \t");
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1767
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John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1768 retval = (s.substr (offset, 9) == "Copyright" || s.substr (offset, 6) == "Author");
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1769 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1770
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1771 return retval;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1772 }
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
1773
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1774 void
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1775 octave_lexer::input_buffer::fill (const std::string& input, bool eof_arg)
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1776 {
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1777 buffer = input;
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1778 chars_left = buffer.length ();
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1779 pos = buffer.c_str ();
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1780 eof = eof_arg;
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1781 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1782
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1783 int
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1784 octave_lexer::input_buffer::copy_chunk (char *buf, size_t max_size)
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1785 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1786 static const char * const eol = "\n";
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1787
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1788 size_t len = max_size > chars_left ? chars_left : max_size;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1789 assert (len > 0);
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1790
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1791 memcpy (buf, pos, len);
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1792
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1793 chars_left -= len;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1794 pos += len;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1795
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1796 // Make sure input ends with a new line character.
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1797 if (chars_left == 0 && buf[len-1] != '\n')
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1798 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1799 if (len < max_size)
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1800 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1801 // There is enough room to plug the newline character in
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1802 // the buffer.
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1803 buf[len++] = '\n';
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1804 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1805 else
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1806 {
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1807 // There isn't enough room to plug the newline character
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1808 // in the buffer so arrange to have it returned on the next
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1809 // call to octave_lexer::read.
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1810 pos = eol;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1811 chars_left = 1;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1812 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1813 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1814
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1815 return len;
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1816 }
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1817
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1818 octave_lexer::~octave_lexer (void)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1819 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1820 yylex_destroy (scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1821 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1822
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1823 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1824 octave_lexer::init (void)
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1825 {
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1826 yylex_init (&scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1827
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1828 // Make octave_lexer object available through yyextra in
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1829 // flex-generated lexer.
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1830 yyset_extra (this, scanner);
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1831
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1832 clear_start_state ();
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1833 }
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1834
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1835 // Inside Flex-generated functions, yyg is the scanner cast to its real
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1836 // type. Some flex macros that we use in octave_lexer member functions
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1837 // (for example, BEGIN) use yyg. If we could perform the actions of
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1838 // these macros with functions instead, we could eliminate the
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1839 // OCTAVE_YYG macro.
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1840
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1841 #define OCTAVE_YYG \
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1842 struct yyguts_t *yyg = static_cast<struct yyguts_t*> (scanner)
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1843
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1844 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1845 octave_lexer::reset (void)
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1846 {
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1847 // Start off on the right foot.
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1848 clear_start_state ();
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1849
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1850 parser_symtab_context.clear ();
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1851
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1852 // We do want a prompt by default.
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1853 promptflag (1);
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1854
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1855 // Only ask for input from stdin if we are expecting interactive
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1856 // input.
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1857
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1858 if (! quitting_gracefully
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1859 && (interactive || forced_interactive)
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1860 && ! (reading_fcn_file
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1861 || reading_classdef_file
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1862 || reading_script_file
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1863 || input_from_eval_string ()))
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1864 yyrestart (stdin, scanner);
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1865
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1866 input_reader.reset ();
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
1867
16194
b7ca669af528 reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents: 16193
diff changeset
1868 lexical_feedback::reset ();
16123
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1869 }
a484e39d1f22 maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16122
diff changeset
1870
16124
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1871 void
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1872 octave_lexer::prep_for_file (void)
16124
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1873 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1874 reading_script_file = true;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1875
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
1876 push_start_state (INPUT_FILE_START);
16124
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1877 }
3be725cd195b move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16123
diff changeset
1878
16121
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1879 int
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1880 octave_lexer::read (char *buf, unsigned max_size)
16121
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1881 {
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1882 int status = 0;
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1883
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1884 if (input_buf.empty ())
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1885 {
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1886 bool eof = false;
16207
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
1887 current_input_line = input_reader.get_input (eof);
0467d68ca891 move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16203
diff changeset
1888 input_buf.fill (current_input_line, eof);
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1889 }
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1890
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1891 if (! input_buf.empty ())
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1892 status = input_buf.copy_chunk (buf, max_size);
16121
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1893 else
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1894 {
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1895 status = YY_NULL;
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1896
16183
359d56094efa handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents: 16166
diff changeset
1897 if (! input_buf.at_eof ())
16195
b52d2f9294b6 use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents: 16194
diff changeset
1898 fatal_error ("octave_lexer::read () in flex scanner failed");
16121
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1899 }
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1900
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1901 return status;
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1902 }
bdf365c5c9bf maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16120
diff changeset
1903
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
1904 int
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1905 octave_lexer::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
1906 {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1907 lexer_debug ("<<EOF>>");
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1908
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1909 if (block_comment_nesting_level != 0)
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1910 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1911 warning ("block comment open at end of input");
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1912
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1913 if ((reading_fcn_file || reading_script_file || reading_classdef_file)
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1914 && ! fcn_file_name.empty ())
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1915 warning ("near line %d of file '%s.m'",
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
1916 input_line_number, fcn_file_name.c_str ());
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1917 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1918
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
1919 return handle_token (END_OF_INPUT);
16164
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1920 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1921
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1922 char *
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1923 octave_lexer::flex_yytext (void)
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1924 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1925 return yyget_text (scanner);
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1926 }
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1927
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1928 int
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1929 octave_lexer::flex_yyleng (void)
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1930 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1931 return yyget_leng (scanner);
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1932 }
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
1933
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1934 int
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1935 octave_lexer::text_yyinput (void)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1936 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1937 int c = yyinput (scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1938
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1939 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1940 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1941 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1942 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1943 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1944 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1945
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1946 // Convert CRLF into just LF and single CR into LF.
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1947
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1948 if (c == '\r')
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1949 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1950 c = yyinput (scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1951
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1952 if (lexer_debug_flag)
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1953 {
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1954 std::cerr << "I: ";
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1955 display_character (c);
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1956 std::cerr << std::endl;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1957 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1958
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1959 if (c != '\n')
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1960 {
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1961 xunput (c);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1962 c = '\n';
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1963 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1964 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1965
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1966 if (c == '\n')
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1967 input_line_number++;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1968
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1969 return c;
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1970 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1971
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1972 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1973 octave_lexer::xunput (char c, char *buf)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1974 {
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
1975 if (c != EOF)
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1976 {
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
1977 if (lexer_debug_flag)
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1978 {
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1979 std::cerr << "U: ";
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1980 display_character (c);
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1981 std::cerr << std::endl;
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1982 }
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1983
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1984 if (c == '\n')
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1985 input_line_number--;
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1986
c5bfdc4c0963 move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents: 16158
diff changeset
1987 yyunput (c, buf, scanner);
16114
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1988 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1989 }
73a21ade0b6b * lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents: 16113
diff changeset
1990
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1991 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
1992 octave_lexer::xunput (char c)
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1993 {
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1994 char *yytxt = flex_yytext ();
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
1995
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
1996 xunput (c, yytxt);
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1997 }
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
1998
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
1999 bool
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2000 octave_lexer::inside_any_object_index (void)
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2001 {
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2002 bool retval = false;
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2003
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2004 for (std::list<bool>::const_iterator i = looking_at_object_index.begin ();
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2005 i != looking_at_object_index.end (); i++)
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2006 {
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2007 if (*i)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2008 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2009 retval = true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2010 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2011 }
8745
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2012 }
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2013
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2014 return retval;
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2015 }
6dc61981d18b better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents: 8701
diff changeset
2016
4238
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
2017 // Handle keywords. Return -1 if the keyword should be ignored.
767
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe]
jwe
parents: 747
diff changeset
2018
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2019 int
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2020 octave_lexer::is_keyword_token (const std::string& s)
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2021 {
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2022 int l = input_line_number;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2023 int c = current_input_column;
3805
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe]
jwe
parents: 3802
diff changeset
2024
1823
5cdd59e7579a [project @ 1996-02-01 12:45:05 by jwe]
jwe
parents: 1755
diff changeset
2025 int len = s.length ();
922
708827b941b4 [project @ 1994-11-14 22:14:13 by jwe]
jwe
parents: 916
diff changeset
2026
5088
7830f271a53f [project @ 2004-12-01 19:54:45 by jwe]
jwe
parents: 5035
diff changeset
2027 const octave_kw *kw = octave_kw_hash::in_word_set (s.c_str (), len);
191
b6b4d8c513fe [project @ 1993-10-29 23:41:39 by jwe]
jwe
parents: 186
diff changeset
2028
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2029 if (kw)
143
7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe]
jwe
parents: 120
diff changeset
2030 {
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2031 token *tok_val = 0;
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2032
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2033 switch (kw->kw_id)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2034 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2035 case break_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2036 case catch_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2037 case continue_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2038 case else_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2039 case otherwise_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2040 case return_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2041 case unwind_protect_cleanup_kw:
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2042 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2043 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2044
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2045 case static_kw:
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2046 if ((reading_fcn_file || reading_script_file
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2047 || reading_classdef_file)
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2048 && ! fcn_file_full_name.empty ())
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2049 warning_with_id ("Octave:deprecated-keyword",
15468
6437fa7263dd use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 15467
diff changeset
2050 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d of file '%s'",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2051 input_line_number,
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2052 fcn_file_full_name.c_str ());
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2053 else
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2054 warning_with_id ("Octave:deprecated-keyword",
15468
6437fa7263dd use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 15467
diff changeset
2055 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2056 input_line_number);
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2057 // fall through ...
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2058
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2059 case persistent_kw:
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2060 case global_kw:
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
2061 looking_at_decl_list = true;
14294
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2062 break;
9e3983c8963c deprecate the static keyword
John W. Eaton <jwe@octave.org>
parents: 14292
diff changeset
2063
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2064 case case_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2065 case elseif_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2066 case until_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2067 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2068
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2069 case end_kw:
14645
cbc00b587f36 also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents: 14642
diff changeset
2070 if (inside_any_object_index ()
cbc00b587f36 also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents: 14642
diff changeset
2071 || (! reading_classdef_file
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2072 && (defining_func
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2073 && ! (looking_at_return_list
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2074 || parsed_function_name.top ()))))
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2075 return 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2076
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2077 tok_val = new token (end_kw, token::simple_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2078 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2079 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2080
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2081 case end_try_catch_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2082 tok_val = new token (end_try_catch_kw, token::try_catch_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2083 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2084 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2085
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2086 case end_unwind_protect_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2087 tok_val = new token (end_unwind_protect_kw,
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2088 token::unwind_protect_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2089 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2090 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2091
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2092 case endfor_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2093 tok_val = new token (endfor_kw, token::for_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2094 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2095 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2096
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2097 case endfunction_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2098 tok_val = new token (endfunction_kw, token::function_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2099 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2100 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2101
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2102 case endif_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2103 tok_val = new token (endif_kw, token::if_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2104 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2105 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2106
13246
0c69a564f2be additional parfor changes
John W. Eaton <jwe@octave.org>
parents: 13245
diff changeset
2107 case endparfor_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2108 tok_val = new token (endparfor_kw, token::parfor_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2109 at_beginning_of_statement = true;
13246
0c69a564f2be additional parfor changes
John W. Eaton <jwe@octave.org>
parents: 13245
diff changeset
2110 break;
0c69a564f2be additional parfor changes
John W. Eaton <jwe@octave.org>
parents: 13245
diff changeset
2111
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2112 case endswitch_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2113 tok_val = new token (endswitch_kw, token::switch_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2114 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2115 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2116
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2117 case endwhile_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2118 tok_val = new token (endwhile_kw, token::while_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2119 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2120 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2121
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2122 case endclassdef_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2123 tok_val = new token (endclassdef_kw, token::classdef_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2124 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2125 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2126
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2127 case endenumeration_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2128 tok_val = new token (endenumeration_kw, token::enumeration_end,
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2129 l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2130 at_beginning_of_statement = true;
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2131 break;
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2132
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2133 case endevents_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2134 tok_val = new token (endevents_kw, token::events_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2135 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2136 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2137
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2138 case endmethods_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2139 tok_val = new token (endmethods_kw, token::methods_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2140 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2141 break;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2142
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2143 case endproperties_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2144 tok_val = new token (endproperties_kw, token::properties_end, l, c);
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2145 at_beginning_of_statement = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2146 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2147
13245
027a2186cd90 parfor keyword and infrastructure, but handle parfor as normal for loop for now
John W. Eaton <jwe@octave.org>
parents: 13237
diff changeset
2148
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2149 case for_kw:
13245
027a2186cd90 parfor keyword and infrastructure, but handle parfor as normal for loop for now
John W. Eaton <jwe@octave.org>
parents: 13237
diff changeset
2150 case parfor_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2151 case while_kw:
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2152 decrement_promptflag ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2153 looping++;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2154 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2155
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2156 case do_kw:
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2157 at_beginning_of_statement = true;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2158 decrement_promptflag ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2159 looping++;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2160 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2161
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2162 case try_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2163 case unwind_protect_kw:
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2164 at_beginning_of_statement = true;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2165 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2166 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2167
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2168 case if_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2169 case switch_kw:
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2170 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2171 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2172
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2173 case get_kw:
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2174 case set_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2175 // 'get' and 'set' are keywords in classdef method
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2176 // declarations.
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2177 if (! maybe_classdef_get_set_method)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2178 return 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2179 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2180
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2181 case enumeration_kw:
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2182 case events_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2183 case methods_kw:
13249
7861a5fd3479 accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents: 13246
diff changeset
2184 case properties_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2185 // 'properties', 'methods' and 'events' are keywords for
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2186 // classdef blocks.
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2187 if (! parsing_classdef)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2188 return 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2189 // fall through ...
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2190
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2191 case classdef_kw:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2192 // 'classdef' is always a keyword.
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2193 decrement_promptflag ();
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2194
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2195 if (! force_script && token_count == 0 && input_from_file ())
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2196 {
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2197 reading_classdef_file = true;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2198 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2199 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2200 break;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2201
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2202 case function_kw:
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2203 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2204
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2205 defining_func++;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2206 parsed_function_name.push (false);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2207
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2208 if (! force_script && token_count == 0 && input_from_file ())
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2209 {
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2210 reading_fcn_file = true;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2211 reading_script_file = false;
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2212 }
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2213
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2214 if (! (reading_fcn_file || reading_script_file
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2215 || reading_classdef_file))
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2216 input_line_number = 1;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2217 break;
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2218
3174
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3165
diff changeset
2219 case magic_file_kw:
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2220 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2221 if ((reading_fcn_file || reading_script_file
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2222 || reading_classdef_file)
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
2223 && ! fcn_file_full_name.empty ())
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2224 tok_val = new token (magic_file_kw, fcn_file_full_name, l, c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2225 else
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2226 tok_val = new token (magic_file_kw, "stdin", l, c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2227 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2228 break;
3174
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3165
diff changeset
2229
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3165
diff changeset
2230 case magic_line_kw:
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2231 tok_val = new token (magic_line_kw, static_cast<double> (l),
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2232 "", l, c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2233 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2234
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2235 default:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2236 panic_impossible ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2237 }
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2238
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2239 if (! tok_val)
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2240 tok_val = new token (kw->tok, l, c);
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
2241
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2242 push_token (tok_val);
1497
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2243
48a0b289f1be [project @ 1995-09-30 22:04:27 by jwe]
jwe
parents: 1489
diff changeset
2244 return kw->tok;
143
7849db4b6dbc [project @ 1993-10-04 02:36:45 by jwe]
jwe
parents: 120
diff changeset
2245 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2246
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2247 return 0;
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2248 }
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
2249
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2250 bool
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2251 octave_lexer::is_variable (const std::string& name)
2702
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
2252 {
8001
ff9e7873f8ea improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents: 7898
diff changeset
2253 return (symbol_table::is_variable (name)
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2254 || (pending_local_variables.find (name)
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2255 != pending_local_variables.end ()));
2702
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
2256 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
2257
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2258 bool
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2259 octave_lexer::whitespace_is_significant (void)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2260 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2261 return (nesting_level.is_bracket ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2262 || (nesting_level.is_brace ()
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2263 && ! looking_at_object_index.front ()));
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2264 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2265
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2266 static inline bool
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2267 looks_like_hex (const char *s, int len)
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2268 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2269 return (len > 2 && s[0] == '0' && (s[1] == 'x' || s[1] == 'X'));
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2270 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2271
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2272 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2273 octave_lexer::handle_number (void)
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2274 {
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2275 double value = 0.0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2276 int nread = 0;
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2277
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2278 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2279
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2280 if (looks_like_hex (yytxt, strlen (yytxt)))
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2281 {
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2282 unsigned long ival;
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2283
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2284 nread = sscanf (yytxt, "%lx", &ival);
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2285
3220
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2286 value = static_cast<double> (ival);
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2287 }
3deb1105fbc1 [project @ 1998-11-19 00:06:30 by jwe]
jwe
parents: 3208
diff changeset
2288 else
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2289 {
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2290 char *tmp = strsave (yytxt);
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2291
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2292 char *idx = strpbrk (tmp, "Dd");
2621
337a09dd1c06 [project @ 1997-01-24 21:49:41 by jwe]
jwe
parents: 2614
diff changeset
2293
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2294 if (idx)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2295 *idx = 'e';
3598
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2296
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2297 nread = sscanf (tmp, "%lf", &value);
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2298
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2299 delete [] tmp;
0ae310231c46 [project @ 2000-02-19 08:07:08 by jwe]
jwe
parents: 3575
diff changeset
2300 }
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2301
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1823
diff changeset
2302 // If yytext doesn't contain a valid number, we are in deep doo doo.
985
4b483cf9f6b0 [project @ 1994-12-14 18:06:38 by jwe]
jwe
parents: 975
diff changeset
2303
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2304 assert (nread == 1);
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2305
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2306 looking_for_object_index = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2307 at_beginning_of_statement = false;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2308
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2309 push_token (new token (NUM, value, yytxt, input_line_number,
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2310 current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2311
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2312 current_input_column += flex_yyleng ();
972
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2313 }
3e25eb05b6c6 [project @ 1994-12-12 15:53:47 by jwe]
jwe
parents: 971
diff changeset
2314
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2315 void
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2316 octave_lexer::handle_continuation (void)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2317 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2318 char *yytxt = flex_yytext ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2319 int yylng = flex_yyleng ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2320
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2321 int offset = 1;
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2322 if (yytxt[0] == '\\')
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2323 gripe_matlab_incompatible_continuation ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2324 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2325 offset = 3;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2326
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2327 bool have_space = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2328 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2329 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2330 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2331 if (c == ' ' || c == '\t')
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2332 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2333 have_space = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2334 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2335 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2336 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2337 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2338 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2339
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2340 if (have_space)
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2341 mark_previous_token_trailing_space ();
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2342
16253
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2343 bool have_comment = false;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2344 while (offset < yylng)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2345 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2346 char c = yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2347 if (c == '#' || c == '%')
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2348 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2349 have_comment = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2350 offset++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2351 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2352 else
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2353 break;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2354 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2355
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2356 if (have_comment)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2357 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2358 comment_text = &yytxt[offset];
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2359
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2360 finish_comment (octave_comment_elt::end_of_line, true);
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2361 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2362
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2363 decrement_promptflag ();
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2364 input_line_number++;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2365 current_input_column = 1;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2366 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2367
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2368 void
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2369 octave_lexer::finish_comment (octave_comment_elt::comment_type typ,
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2370 bool looking_at_continuation)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2371 {
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2372 bool copyright = looks_like_copyright (comment_text);
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2373
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2374 if (nesting_level.none () && help_text.empty ()
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2375 && ! comment_text.empty () && ! copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2376 help_text = comment_text;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2377
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2378 if (copyright)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2379 typ = octave_comment_elt::copyright;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2380
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2381 octave_comment_buffer::append (comment_text, typ);
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2382
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2383 comment_text = "";
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2384
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2385 at_beginning_of_statement = true;
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2386
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2387 if (! looking_at_continuation)
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2388 xunput ('\n');
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2389 }
a89cf57ba3a5 partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents: 16231
diff changeset
2390
1001
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2391 // We have seen a backslash and need to find out if it should be
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2392 // treated as a continuation character. If so, this eats it, up to
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2393 // and including the new line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2394 //
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2395 // Match whitespace only, followed by a comment character or newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2396 // Once a comment character is found, discard all input until newline.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2397 // If non-whitespace characters are found before comment
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2398 // characters, return 0. Otherwise, return 1.
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2399
7723
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
2400 // FIXME -- we need to handle block comments here.
74f5e0c7de9e first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents: 7722
diff changeset
2401
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2402 bool
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2403 octave_lexer::have_continuation (bool trailing_comments_ok)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2404 {
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5615
diff changeset
2405 std::ostringstream buf;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2406
3665
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2407 std::string comment_buf;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2408
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2409 bool in_comment = false;
3665
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2410 bool beginning_of_comment = false;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2411
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2412 int c = 0;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe]
jwe
parents: 3598
diff changeset
2413
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2414 while ((c = text_yyinput ()) != EOF)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2415 {
3802
4f1a26a730fd [project @ 2001-02-26 20:26:14 by jwe]
jwe
parents: 3796
diff changeset
2416 buf << static_cast<char> (c);
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2417
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2418 switch (c)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2419 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2420 case ' ':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2421 case '\t':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2422 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2423 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2424 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2425 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2426 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2427 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2428
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2429 case '%':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2430 case '#':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2431 if (trailing_comments_ok)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2432 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2433 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2434 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2435 if (! beginning_of_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2436 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2437 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2438 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2439 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2440 maybe_gripe_matlab_incompatible_comment (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2441 in_comment = true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2442 beginning_of_comment = true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2443 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2444 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2445 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2446 goto cleanup;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2447 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2448
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2449 case '\n':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2450 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2451 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2452 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2453 octave_comment_buffer::append (comment_buf);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2454 }
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2455 current_input_column = 0;
16209
e7ff32e7cf82 move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents: 16207
diff changeset
2456 decrement_promptflag ();
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2457 gripe_matlab_incompatible_continuation ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2458 return true;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2459
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2460 default:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2461 if (in_comment)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2462 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2463 comment_buf += static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2464 beginning_of_comment = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2465 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2466 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2467 goto cleanup;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2468 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2469 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2470 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2471
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2472 xunput (c);
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2473 return false;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2474
3096
ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe]
jwe
parents: 3079
diff changeset
2475 cleanup:
4051
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2476
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5615
diff changeset
2477 std::string s = buf.str ();
4051
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2478
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2479 int len = s.length ();
b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe]
jwe
parents: 4037
diff changeset
2480 while (len--)
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2481 xunput (s[len]);
3096
ff8b4d6371b3 [project @ 1997-11-14 07:59:14 by jwe]
jwe
parents: 3079
diff changeset
2482
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2483 return false;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2484 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2485
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
2486 // We have seen a '.' and need to see if it is the start of a
1001
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2487 // continuation. If so, this eats it, up to and including the new
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2488 // line character.
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2489
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2490 bool
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2491 octave_lexer::have_ellipsis_continuation (bool trailing_comments_ok)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2492 {
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2493 char c1 = text_yyinput ();
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2494 if (c1 == '.')
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2495 {
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2496 char c2 = text_yyinput ();
1091
54abf1b3a8e9 [project @ 1995-02-02 00:30:14 by jwe]
jwe
parents: 1088
diff changeset
2497 if (c2 == '.' && have_continuation (trailing_comments_ok))
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2498 return true;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2499 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2500 {
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2501 xunput (c2);
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2502 xunput (c1);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2503 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2504 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2505 else
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2506 xunput (c1);
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2507
2857
5448c8cba402 [project @ 1997-03-31 07:06:10 by jwe]
jwe
parents: 2856
diff changeset
2508 return false;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2509 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2510
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2511 int
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2512 octave_lexer::handle_string (char delim)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2513 {
5765
7ba9ad1fec11 [project @ 2006-04-17 05:05:15 by jwe]
jwe
parents: 5615
diff changeset
2514 std::ostringstream buf;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2515
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2516 int bos_line = input_line_number;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2517 int bos_col = current_input_column;
3805
44386b0e53da [project @ 2001-03-01 16:54:31 by jwe]
jwe
parents: 3802
diff changeset
2518
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2519 int c;
1031
59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe]
jwe
parents: 1019
diff changeset
2520 int escape_pending = 0;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2521
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
2522 while ((c = text_yyinput ()) != EOF)
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2523 {
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2524 current_input_column++;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2525
3105
f936c7f5074f [project @ 1997-11-19 04:36:17 by jwe]
jwe
parents: 3103
diff changeset
2526 if (c == '\\')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2527 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2528 if (delim == '\'' || escape_pending)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2529 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2530 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2531 escape_pending = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2532 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2533 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2534 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2535 if (have_continuation (false))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2536 escape_pending = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2537 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2538 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2539 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2540 escape_pending = 1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2541 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2542 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2543 continue;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2544 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2545 else if (c == '.')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2546 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2547 if (delim == '\'' || ! have_ellipsis_continuation (false))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2548 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2549 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2550 else if (c == '\n')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2551 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2552 error ("unterminated string constant");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2553 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2554 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2555 else if (c == delim)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2556 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2557 if (escape_pending)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2558 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2559 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2560 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2561 c = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2562 if (c == delim)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2563 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2564 buf << static_cast<char> (c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2565 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2566 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2567 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2568 std::string s;
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2569 xunput (c);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2570
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2571 if (delim == '\'')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2572 s = buf.str ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2573 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2574 s = do_string_escapes (buf.str ());
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2575
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2576 if (delim == '"')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2577 gripe_matlab_incompatible ("\" used as string delimiter");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2578 else if (delim == '\'')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2579 gripe_single_quote_string ();
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
2580
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2581 looking_for_object_index = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2582 at_beginning_of_statement = false;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2583
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2584 int tok = delim == '"' ? DQ_STRING : SQ_STRING;
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2585
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2586 push_token (new token (tok, s, bos_line, bos_col));
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2587
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2588 return tok;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2589 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2590 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2591 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2592 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2593 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2594 buf << static_cast<char> (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2595 }
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2596
1031
59f5eb2d5eb3 [project @ 1995-01-15 21:11:11 by jwe]
jwe
parents: 1019
diff changeset
2597 escape_pending = 0;
973
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2598 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2599
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2600 return LEXICAL_ERROR;
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2601 }
46673c918034 [project @ 1994-12-12 17:50:07 by jwe]
jwe
parents: 972
diff changeset
2602
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2603 int
16259
0b5ab09dfce4 2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16257
diff changeset
2604 octave_lexer::handle_close_bracket (int bracket_type)
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2605 {
4612
d44675070f1a [project @ 2003-11-14 19:49:56 by jwe]
jwe
parents: 4608
diff changeset
2606 int retval = bracket_type;
3208
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe]
jwe
parents: 3204
diff changeset
2607
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2608 if (! nesting_level.none ())
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2609 {
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2610 nesting_level.remove ();
4613
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2611
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2612 if (bracket_type == ']')
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2613 bracketflag--;
4613
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2614 else if (bracket_type == '}')
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2615 braceflag--;
4613
d1786f2d8a3c [project @ 2003-11-14 22:46:19 by jwe]
jwe
parents: 4612
diff changeset
2616 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2617 panic_impossible ();
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2618 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2619
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
2620 pop_start_state ();
1001
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
2621
3208
e8a7163701be [project @ 1998-11-03 05:12:47 by jwe]
jwe
parents: 3204
diff changeset
2622 return retval;
971
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2623 }
fe71abb43457 [project @ 1994-12-12 15:10:22 by jwe]
jwe
parents: 970
diff changeset
2624
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2625 bool
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2626 octave_lexer::next_token_can_follow_bin_op (void)
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2627 {
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2628 std::stack<char> buf;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2629
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2630 int c = EOF;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2631
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2632 // Skip whitespace in current statement on current line
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2633 while (true)
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2634 {
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2635 c = text_yyinput ();
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2636
8767
026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack
John W. Eaton <jwe@octave.org>
parents: 8746
diff changeset
2637 buf.push (c);
026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack
John W. Eaton <jwe@octave.org>
parents: 8746
diff changeset
2638
026c6732ec7a lex.l (next_token_can_follow_bin_op): push all characters read on to buffer stack
John W. Eaton <jwe@octave.org>
parents: 8746
diff changeset
2639 if (match_any (c, ",;\n") || (c != ' ' && c != '\t'))
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2640 break;
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2641 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2642
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2643 // Restore input.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2644 while (! buf.empty ())
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2645 {
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2646 xunput (buf.top ());
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2647
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2648 buf.pop ();
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2649 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2650
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2651 return (isalnum (c) || match_any (c, "!\"'(-[_{~"));
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2652 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2653
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2654 static bool
10052
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2655 can_be_command (const std::string& tok)
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2656 {
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2657 // Don't allow these names to be treated as commands to avoid
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2658 // surprises when parsing things like "NaN ^2".
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2659
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2660 return ! (tok == "e"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2661 || tok == "I" || tok == "i"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2662 || tok == "J" || tok == "j"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2663 || tok == "Inf" || tok == "inf"
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2664 || tok == "NaN" || tok == "nan");
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2665 }
5813ec5077b5 don't allow e, i, j, inf, or nan to be commands
John W. Eaton <jwe@octave.org>
parents: 10048
diff changeset
2666
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2667 bool
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2668 octave_lexer::looks_like_command_arg (void)
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2669 {
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2670 bool retval = true;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2671
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2672 int c0 = text_yyinput ();
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2673
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2674 switch (c0)
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2675 {
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2676 // = ==
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2677 case '=':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2678 {
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2679 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2680
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2681 if (c1 == '=')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2682 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2683 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2684
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2685 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2686 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2687 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2688
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2689 xunput (c2);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2690 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2691 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2692 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2693
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2694 xunput (c1);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2695 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2696 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2697
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2698 case '(':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2699 case '{':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2700 // Indexing.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2701 retval = false;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2702 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2703
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2704 case '\n':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2705 // EOL.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2706 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2707
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2708 case '\'':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2709 case '"':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2710 // Beginning of a character string.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2711 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2712
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2713 // + - ++ -- += -=
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2714 case '+':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2715 case '-':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2716 {
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2717 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2718
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2719 switch (c1)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2720 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2721 case '\n':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2722 // EOL.
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2723 case '+':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2724 case '-':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2725 // Unary ops, spacing doesn't matter.
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2726 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2727
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2728 case '\t':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2729 case ' ':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2730 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2731 if (next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2732 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2733 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2734 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2735
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2736 case '=':
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2737 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2738 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2739
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2740 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2741 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2742 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2743
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2744 xunput (c2);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2745 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2746 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2747 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2748
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2749 xunput (c1);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2750 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2751 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2752
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2753 case ':':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2754 case '/':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2755 case '\\':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2756 case '^':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2757 {
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2758 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2759
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2760 if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2761 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2762 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2763
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2764 xunput (c1);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2765 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2766 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2767
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2768 // .+ .- ./ .\ .^ .* .**
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2769 case '.':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2770 {
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2771 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2772
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2773 if (match_any (c1, "+-/\\^*"))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2774 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2775 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2776
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2777 if (c2 == '=')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2778 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2779 int c3 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2780
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2781 if (! match_any (c3, ",;\n") && (c3 == ' ' || c3 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2782 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2783 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2784
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2785 xunput (c3);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2786 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2787 else if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2788 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2789 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2790
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2791 xunput (c2);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2792 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2793 else if (! match_any (c1, ",;\n")
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2794 && (! isdigit (c1) && c1 != ' ' && c1 != '\t'
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2795 && c1 != '.'))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2796 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2797 // Structure reference. FIXME -- is this a complete check?
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2798
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2799 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2800 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2801
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2802 xunput (c1);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2803 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2804 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2805
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2806 // & && | || * **
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2807 case '&':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2808 case '|':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2809 case '*':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2810 {
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2811 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2812
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2813 if (c1 == c0)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2814 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2815 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2816
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2817 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2818 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2819 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2820
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2821 xunput (c2);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2822 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2823 else if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2824 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2825 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2826
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2827 xunput (c1);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2828 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2829 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2830
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2831 // < <= > >=
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2832 case '<':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2833 case '>':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2834 {
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2835 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2836
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2837 if (c1 == '=')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2838 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2839 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2840
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2841 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2842 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2843 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2844
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2845 xunput (c2);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2846 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2847 else if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2848 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2849 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2850
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2851 xunput (c1);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2852 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2853 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2854
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2855 // ~= !=
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2856 case '~':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2857 case '!':
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2858 {
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2859 int c1 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2860
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2861 // ~ and ! can be unary ops, so require following =.
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2862 if (c1 == '=')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2863 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2864 int c2 = text_yyinput ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2865
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2866 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2867 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2868 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2869
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2870 xunput (c2);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2871 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2872 else if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t')
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2873 && next_token_can_follow_bin_op ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2874 retval = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2875
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2876 xunput (c1);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2877 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2878 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2879
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2880 default:
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2881 break;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2882 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2883
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
2884 xunput (c0);
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2885
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2886 return retval;
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2887 }
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2888
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2889 int
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2890 octave_lexer::handle_superclass_identifier (void)
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2891 {
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2892 std::string pkg;
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2893 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2894 std::string meth = strip_trailing_whitespace (yytxt);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2895 size_t pos = meth.find ("@");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2896 std::string cls = meth.substr (pos).substr (1);
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2897 meth = meth.substr (0, pos - 1);
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2898
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2899 pos = cls.find (".");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2900 if (pos != std::string::npos)
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2901 {
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2902 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2903 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2904 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2905
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2906 int kw_token = (is_keyword_token (meth) || is_keyword_token (cls)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
2907 || is_keyword_token (pkg));
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2908 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2909 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2910 error ("method, class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2911 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2912 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2913
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2914 push_token (new token (SUPERCLASSREF,
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2915 meth.empty () ? 0 : &(symbol_table::insert (meth)),
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2916 cls.empty () ? 0 : &(symbol_table::insert (cls)),
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2917 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2918 input_line_number, current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2919
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2920 current_input_column += flex_yyleng ();
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2921
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2922 return SUPERCLASSREF;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2923 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2924
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2925 int
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2926 octave_lexer::handle_meta_identifier (void)
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2927 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2928 std::string pkg;
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2929 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2930 std::string cls = strip_trailing_whitespace (yytxt).substr (1);
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2931 size_t pos = cls.find (".");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2932
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2933 if (pos != std::string::npos)
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2934 {
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2935 pkg = cls.substr (pos).substr (1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2936 cls = cls.substr (0, pos - 1);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2937 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2938
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2939 int kw_token = is_keyword_token (cls) || is_keyword_token (pkg);
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2940 if (kw_token)
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2941 {
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2942 error ("class and package names may not be keywords");
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2943 return LEXICAL_ERROR;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2944 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2945
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2946 push_token (new token (METAQUERY,
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2947 cls.empty () ? 0 : &(symbol_table::insert (cls)),
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2948 pkg.empty () ? 0 : &(symbol_table::insert (pkg)),
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2949 input_line_number, current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2950
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2951 current_input_column += flex_yyleng ();
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
2952
9476
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2953 return METAQUERY;
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2954 }
d9b25c5b8ee5 handle classdef syntax in lexer and parser
Ryan Rusaw
parents: 9474
diff changeset
2955
767
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe]
jwe
parents: 747
diff changeset
2956 // Figure out exactly what kind of token to return when we have seen
4238
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
2957 // an identifier. Handles keywords. Return -1 if the identifier
a5a68c0afe56 [project @ 2002-12-25 21:04:33 by jwe]
jwe
parents: 4237
diff changeset
2958 // should be ignored.
767
42731861ee09 [project @ 1994-10-05 21:26:54 by jwe]
jwe
parents: 747
diff changeset
2959
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2960 int
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
2961 octave_lexer::handle_identifier (void)
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
2962 {
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2963 char *yytxt = flex_yytext ();
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2964
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2965 std::string tok = yytxt;
16128
210039e91ad6 localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16126
diff changeset
2966
2970
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2967 // If we are expecting a structure element, avoid recognizing
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2968 // keywords and other special names and return STRUCT_ELT, which is
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2969 // a string that is also a valid identifier. But first, we have to
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2970 // decide whether to insert a comma.
747
6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe]
jwe
parents: 661
diff changeset
2971
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2972 if (looking_at_indirect_ref)
1072
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe]
jwe
parents: 1060
diff changeset
2973 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
2974 push_token (new token (STRUCT_ELT, tok, input_line_number,
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
2975 current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2976
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2977 looking_for_object_index = true;
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2978
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
2979 current_input_column += flex_yyleng ();
2819
ae3cce876a8e [project @ 1997-03-17 23:27:45 by jwe]
jwe
parents: 2804
diff changeset
2980
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2981 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2982
2970
b9e64477f703 [project @ 1997-05-15 18:04:21 by jwe]
jwe
parents: 2926
diff changeset
2983 return STRUCT_ELT;
1072
0cd3ba9c1f61 [project @ 1995-01-26 19:22:22 by jwe]
jwe
parents: 1060
diff changeset
2984 }
747
6182de8cb3b7 [project @ 1994-09-30 15:09:36 by jwe]
jwe
parents: 661
diff changeset
2985
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2986 // The is_keyword_token may reset
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2987 // at_beginning_of_statement. For example, if it sees
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2988 // an else token, then the next token is at the beginning of a
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2989 // statement.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2990
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
2991 // May set begenning_of_statement to true.
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2992 int kw_token = is_keyword_token (tok);
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2993
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2994 // If we found a keyword token, then the beginning_of_statement flag
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2995 // is already set. Otherwise, we won't be at the beginning of a
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2996 // statement.
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
2997
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
2998 if (looking_at_function_handle)
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
2999 {
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
3000 if (kw_token)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3001 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3002 error ("function handles may not refer to keywords");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3003
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3004 return LEXICAL_ERROR;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3005 }
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
3006 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3007 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3008 push_token (new token (FCN_HANDLE, tok, input_line_number,
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
3009 current_input_column));
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3010
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
3011 current_input_column += flex_yyleng ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3012 looking_for_object_index = true;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3013
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3014 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3015
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3016 return FCN_HANDLE;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3017 }
4930
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
3018 }
bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe]
jwe
parents: 4923
diff changeset
3019
5102
b04b30d30c66 [project @ 2004-12-28 01:59:05 by jwe]
jwe
parents: 5088
diff changeset
3020 // If we have a regular keyword, return it.
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
3021 // Keywords can be followed by identifiers.
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3022
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3023 if (kw_token)
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3024 {
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
3025 if (kw_token >= 0)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3026 {
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
3027 current_input_column += flex_yyleng ();
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3028 looking_for_object_index = false;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3029 }
7722
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
3030
c3bb0b7a4261 lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents: 7720
diff changeset
3031 return kw_token;
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3032 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3033
1826
b14829582cc4 [project @ 1996-02-02 03:05:07 by jwe]
jwe
parents: 1823
diff changeset
3034 // See if we have a plot keyword (title, using, with, or clear).
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3035
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
3036 int c1 = text_yyinput ();
3480
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3037
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3038 bool next_tok_is_eq = false;
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3039 if (c1 == '=')
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3040 {
7728
13820b9f5fd9 more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents: 7723
diff changeset
3041 int c2 = text_yyinput ();
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
3042 xunput (c2);
3480
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3043
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3044 if (c2 != '=')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3045 next_tok_is_eq = true;
3480
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3046 }
45742a3b1f7c [project @ 2000-01-26 06:16:41 by jwe]
jwe
parents: 3428
diff changeset
3047
16125
96a58f197f93 allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents: 16124
diff changeset
3048 xunput (c1);
1001
641c05eaed01 [project @ 1994-12-23 06:17:30 by jwe]
jwe
parents: 991
diff changeset
3049
2702
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
3050 // Kluge alert.
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
3051 //
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
3052 // If we are looking at a text style function, set up to gobble its
2745
76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe]
jwe
parents: 2716
diff changeset
3053 // arguments.
76411ce43c05 [project @ 1997-02-26 07:52:14 by jwe]
jwe
parents: 2716
diff changeset
3054 //
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
3055 // If the following token is '=', or if we are parsing a function
3189
bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe]
jwe
parents: 3180
diff changeset
3056 // return list or function parameter list, or if we are looking at
bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe]
jwe
parents: 3180
diff changeset
3057 // something like [ab,cd] = foo (), force the symbol to be inserted
bef7b73c0724 [project @ 1998-10-16 18:05:26 by jwe]
jwe
parents: 3180
diff changeset
3058 // as a variable in the current symbol table.
2702
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
3059
8746
5dd06f19e9be handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents: 8745
diff changeset
3060 if (! is_variable (tok))
2702
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
3061 {
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3062 if (next_tok_is_eq
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3063 || looking_at_decl_list
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3064 || looking_at_return_list
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3065 || (looking_at_parameter_list
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3066 && ! looking_at_initializer_expression))
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3067 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3068 symbol_table::force_variable (tok);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3069 }
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3070 else if (looking_at_matrix_or_assign_lhs)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3071 {
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3072 pending_local_variables.insert (tok);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3073 }
2702
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
3074 }
7a820bb7f406 [project @ 1997-02-19 19:22:34 by jwe]
jwe
parents: 2621
diff changeset
3075
4234
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
3076 // Find the token in the symbol table. Beware the magic
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
3077 // transformation of the end keyword...
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
3078
90e44267e8cf [project @ 2002-12-21 17:15:25 by jwe]
jwe
parents: 4233
diff changeset
3079 if (tok == "end")
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
3080 tok = "__end__";
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3081
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3082 token *tok_val = new token (NAME, &(symbol_table::insert (tok)),
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3083 input_line_number, current_input_column);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3084
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3085 if (at_beginning_of_statement)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3086 tok_val->mark_may_be_command ();
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3087
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3088 push_token (tok_val);
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3089
16130
421dea028bbf localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16129
diff changeset
3090 current_input_column += flex_yyleng ();
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3091
9324
29563379fa9b don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents: 8974
diff changeset
3092 if (tok != "__end__")
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3093 looking_for_object_index = true;
9324
29563379fa9b don't look for object index after keyword
John W. Eaton <jwe@octave.org>
parents: 8974
diff changeset
3094
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3095 at_beginning_of_statement = false;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3096
146
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3097 return NAME;
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3098 }
edfa5a96c5f1 [project @ 1993-10-05 04:02:15 by jwe]
jwe
parents: 143
diff changeset
3099
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3100 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3101 octave_lexer::maybe_warn_separator_insert (char sep)
3388
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
3102 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
3103 std::string nm = fcn_file_full_name;
3388
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
3104
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3105 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3106 warning_with_id ("Octave:separator-insert",
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
3107 "potential auto-insertion of '%c' near line %d",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3108 sep, input_line_number);
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3109 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3110 warning_with_id ("Octave:separator-insert",
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14161
diff changeset
3111 "potential auto-insertion of '%c' near line %d of file %s",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3112 sep, input_line_number, nm.c_str ());
3388
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
3113 }
42cb61dd0248 [project @ 1999-12-16 04:51:43 by jwe]
jwe
parents: 3351
diff changeset
3114
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3115 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3116 octave_lexer::gripe_single_quote_string (void)
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
3117 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
3118 std::string nm = fcn_file_full_name;
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
3119
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3120 if (nm.empty ())
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3121 warning_with_id ("Octave:single-quote-string",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3122 "single quote delimited string near line %d",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3123 input_line_number);
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3124 else
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5783
diff changeset
3125 warning_with_id ("Octave:single-quote-string",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3126 "single quote delimited string near line %d of file %s",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3127 input_line_number, nm.c_str ());
3400
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
3128 }
18366d37e7dd [project @ 1999-12-22 23:36:09 by jwe]
jwe
parents: 3388
diff changeset
3129
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3130 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3131 octave_lexer::gripe_matlab_incompatible (const std::string& msg)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3132 {
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
3133 std::string nm = fcn_file_full_name;
8974
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
3134
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
3135 if (nm.empty ())
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
3136 warning_with_id ("Octave:matlab-incompatible",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3137 "potential Matlab compatibility problem: %s",
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3138 msg.c_str ());
8974
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
3139 else
fde2a916b2ac include line and file info in parser warnings
John W. Eaton <jwe@octave.org>
parents: 8950
diff changeset
3140 warning_with_id ("Octave:matlab-incompatible",
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10182
diff changeset
3141 "potential Matlab compatibility problem: %s near line %d offile %s",
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3142 msg.c_str (), input_line_number, nm.c_str ());
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3143 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3144
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3145 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3146 octave_lexer::maybe_gripe_matlab_incompatible_comment (char c)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3147 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3148 if (c == '#')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3149 gripe_matlab_incompatible ("# used as comment character");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3150 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3151
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3152 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3153 octave_lexer::gripe_matlab_incompatible_continuation (void)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3154 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3155 gripe_matlab_incompatible ("\\ used as line continuation marker");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3156 }
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3157
16113
7c5e5e97a3bc move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents: 16111
diff changeset
3158 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3159 octave_lexer::gripe_matlab_incompatible_operator (const std::string& op)
4037
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3160 {
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3161 std::string t = op;
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3162 int n = t.length ();
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3163 if (t[n-1] == '\n')
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3164 t.resize (n-1);
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3165 gripe_matlab_incompatible (t + " used as operator");
7e0c73f17a5d [project @ 2002-08-13 02:02:26 by jwe]
jwe
parents: 4018
diff changeset
3166 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3167
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3168 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3169 octave_lexer::push_token (token *tok)
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3170 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
3171 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
3172 lval->tok_val = tok;
16230
4bf907906134 use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents: 16229
diff changeset
3173 tokens.push (tok);
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3174 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3175
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3176 token *
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3177 octave_lexer::current_token (void)
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3178 {
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
3179 YYSTYPE *lval = yyget_lval (scanner);
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
3180 return lval->tok_val;
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3181 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3182
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3183 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3184 octave_lexer::display_token (int tok)
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3185 {
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3186 switch (tok)
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3187 {
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3188 case '=': std::cerr << "'='\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3189 case ':': std::cerr << "':'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3190 case '-': std::cerr << "'-'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3191 case '+': std::cerr << "'+'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3192 case '*': std::cerr << "'*'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3193 case '/': std::cerr << "'/'\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3194 case ADD_EQ: std::cerr << "ADD_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3195 case SUB_EQ: std::cerr << "SUB_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3196 case MUL_EQ: std::cerr << "MUL_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3197 case DIV_EQ: std::cerr << "DIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3198 case LEFTDIV_EQ: std::cerr << "LEFTDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3199 case POW_EQ: std::cerr << "POW_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3200 case EMUL_EQ: std::cerr << "EMUL_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3201 case EDIV_EQ: std::cerr << "EDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3202 case ELEFTDIV_EQ: std::cerr << "ELEFTDIV_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3203 case EPOW_EQ: std::cerr << "EPOW_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3204 case AND_EQ: std::cerr << "AND_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3205 case OR_EQ: std::cerr << "OR_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3206 case LSHIFT_EQ: std::cerr << "LSHIFT_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3207 case RSHIFT_EQ: std::cerr << "RSHIFT_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3208 case LSHIFT: std::cerr << "LSHIFT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3209 case RSHIFT: std::cerr << "RSHIFT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3210 case EXPR_AND_AND: std::cerr << "EXPR_AND_AND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3211 case EXPR_OR_OR: std::cerr << "EXPR_OR_OR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3212 case EXPR_AND: std::cerr << "EXPR_AND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3213 case EXPR_OR: std::cerr << "EXPR_OR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3214 case EXPR_NOT: std::cerr << "EXPR_NOT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3215 case EXPR_LT: std::cerr << "EXPR_LT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3216 case EXPR_LE: std::cerr << "EXPR_LE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3217 case EXPR_EQ: std::cerr << "EXPR_EQ\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3218 case EXPR_NE: std::cerr << "EXPR_NE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3219 case EXPR_GE: std::cerr << "EXPR_GE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3220 case EXPR_GT: std::cerr << "EXPR_GT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3221 case LEFTDIV: std::cerr << "LEFTDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3222 case EMUL: std::cerr << "EMUL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3223 case EDIV: std::cerr << "EDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3224 case ELEFTDIV: std::cerr << "ELEFTDIV\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3225 case EPLUS: std::cerr << "EPLUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3226 case EMINUS: std::cerr << "EMINUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3227 case QUOTE: std::cerr << "QUOTE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3228 case TRANSPOSE: std::cerr << "TRANSPOSE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3229 case PLUS_PLUS: std::cerr << "PLUS_PLUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3230 case MINUS_MINUS: std::cerr << "MINUS_MINUS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3231 case POW: std::cerr << "POW\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3232 case EPOW: std::cerr << "EPOW\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3233
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3234 case NUM:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3235 case IMAG_NUM:
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3236 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
3237 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3238 std::cerr << (tok == NUM ? "NUM" : "IMAG_NUM")
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3239 << " [" << tok_val->number () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3240 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3241 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3242
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3243 case STRUCT_ELT:
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3244 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
3245 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3246 std::cerr << "STRUCT_ELT [" << tok_val->text () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3247 }
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3248 break;
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3249
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3250 case NAME:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3251 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
3252 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3253 symbol_table::symbol_record *sr = tok_val->sym_rec ();
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3254 std::cerr << "NAME";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3255 if (sr)
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3256 std::cerr << " [" << sr->name () << "]";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3257 std::cerr << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3258 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3259 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3260
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3261 case END: std::cerr << "END\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3262
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3263 case DQ_STRING:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3264 case SQ_STRING:
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3265 {
16148
10abbc493f50 delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents: 16146
diff changeset
3266 token *tok_val = current_token ();
16126
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3267
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3268 std::cerr << (tok == DQ_STRING ? "DQ_STRING" : "SQ_STRING")
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3269 << " [" << tok_val->text () << "]\n";
5c885c13bfa3 localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents: 16125
diff changeset
3270 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3271 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3272
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3273 case FOR: std::cerr << "FOR\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3274 case WHILE: std::cerr << "WHILE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3275 case DO: std::cerr << "DO\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3276 case UNTIL: std::cerr << "UNTIL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3277 case IF: std::cerr << "IF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3278 case ELSEIF: std::cerr << "ELSEIF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3279 case ELSE: std::cerr << "ELSE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3280 case SWITCH: std::cerr << "SWITCH\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3281 case CASE: std::cerr << "CASE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3282 case OTHERWISE: std::cerr << "OTHERWISE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3283 case BREAK: std::cerr << "BREAK\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3284 case CONTINUE: std::cerr << "CONTINUE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3285 case FUNC_RET: std::cerr << "FUNC_RET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3286 case UNWIND: std::cerr << "UNWIND\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3287 case CLEANUP: std::cerr << "CLEANUP\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3288 case TRY: std::cerr << "TRY\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3289 case CATCH: std::cerr << "CATCH\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3290 case GLOBAL: std::cerr << "GLOBAL\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3291 case PERSISTENT: std::cerr << "PERSISTENT\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3292 case FCN_HANDLE: std::cerr << "FCN_HANDLE\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3293 case END_OF_INPUT: std::cerr << "END_OF_INPUT\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3294 case LEXICAL_ERROR: std::cerr << "LEXICAL_ERROR\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3295 case FCN: std::cerr << "FCN\n"; break;
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3296 case CHOOSE_ASSIGNMENT: std::cerr << "CHOOSE_ASSIGNMENT\n"; break;
16203
127cccb037bf move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents: 16199
diff changeset
3297 case INPUT_FILE: std::cerr << "INPUT_FILE\n"; break;
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3298 case SUPERCLASSREF: std::cerr << "SUPERCLASSREF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3299 case METAQUERY: std::cerr << "METAQUERY\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3300 case GET: std::cerr << "GET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3301 case SET: std::cerr << "SET\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3302 case PROPERTIES: std::cerr << "PROPERTIES\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3303 case METHODS: std::cerr << "METHODS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3304 case EVENTS: std::cerr << "EVENTS\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3305 case CLASSDEF: std::cerr << "CLASSDEF\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3306 case '\n': std::cerr << "\\n\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3307 case '\r': std::cerr << "\\r\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3308 case '\t': std::cerr << "TAB\n"; break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3309 default:
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3310 {
16166
cb80b1d062b1 don't attempt to print unprintable tokens
John W. Eaton <jwe@octave.org>
parents: 16164
diff changeset
3311 if (tok < 256 && tok > 31)
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3312 std::cerr << static_cast<char> (tok) << "\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3313 else
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3314 std::cerr << "UNKNOWN(" << tok << ")\n";
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3315 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3316 break;
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3317 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3318 }
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3319
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3320 void
16158
7eb614760ddb rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents: 16154
diff changeset
3321 octave_lexer::fatal_error (const char *msg)
16129
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3322 {
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3323 error (msg);
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3324
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3325 OCTAVE_QUIT;
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3326
16149
49dfba4fd3c5 use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents: 16148
diff changeset
3327 yy_fatal_error (msg, scanner);
16129
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3328 }
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3329
053b0364b507 localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents: 16128
diff changeset
3330 void
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3331 octave_lexer::lexer_debug (const char *pattern)
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3332 {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3333 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3334 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3335 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3336
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3337 display_start_state ();
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3338
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3339 std::cerr << "P: " << pattern << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3340 std::cerr << "T: " << flex_yytext () << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3341 }
16119
b31eb56f4d84 maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents: 16118
diff changeset
3342 }
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3343
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3344 void
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3345 octave_lexer::push_start_state (int state)
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3346 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3347 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3348
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3349 start_state_stack.push (state);
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3350
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3351 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3352 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3353
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3354 void
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3355 octave_lexer::pop_start_state (void)
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3356 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3357 OCTAVE_YYG;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3358
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3359 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3360
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3361 BEGIN (start_state ());
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3362 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3363
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3364 void
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3365 octave_lexer::clear_start_state (void)
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3366 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3367 while (! start_state_stack.empty ())
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3368 start_state_stack.pop ();
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3369
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3370 push_start_state (INITIAL);
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3371 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3372
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3373 void
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3374 octave_lexer::display_start_state (void) const
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3375 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3376 std::cerr << "S: ";
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3377
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3378 switch (start_state ())
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3379 {
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3380 case INITIAL:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3381 std::cerr << "INITIAL" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3382 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3383
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3384 case COMMAND_START:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3385 std::cerr << "COMMAND_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3386 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3387
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3388 case MATRIX_START:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3389 std::cerr << "MATRIX_START" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3390 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3391
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3392 case INPUT_FILE_START:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3393 std::cerr << "INPUT_FILE_BEGIN" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3394 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3395
16228
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3396 case BLOCK_COMMENT_START:
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3397 std::cerr << "BLOCK_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3398 break;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3399
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3400 case LINE_COMMENT_START:
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3401 std::cerr << "LINE_COMMENT_START" << std::endl;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3402 break;
e19b1632d7c1 revamp most comment handling
John W. Eaton <jwe@octave.org>
parents: 16224
diff changeset
3403
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3404 case KLUGE:
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3405 std::cerr << "KLUGE" << std::endl;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3406 break;
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3407
16224
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3408 default:
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3409 std::cerr << "UNKNOWN START STATE!" << std::endl;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3410 break;
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3411 }
4a848eb52de2 use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents: 16209
diff changeset
3412 }
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3413
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3414 int
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3415 octave_lexer::handle_op (const char *pattern, int tok, bool convert,
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3416 bool bos, bool qit)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3417 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3418 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3419
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3420 return handle_op_internal (pattern, tok, convert, bos, qit, true);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3421 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3422
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3423 int
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3424 octave_lexer::handle_incompatible_op (const char *pattern, int tok,
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3425 bool convert, bool bos, bool qit)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3426 {
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3427 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3428
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3429 return handle_op_internal (pattern, tok, convert, bos, qit, false);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3430 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3431
16263
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3432 bool
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3433 octave_lexer::maybe_unput_comma_before_unary_op (int tok)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3434 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3435 int prev_tok = previous_token_value ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3436
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3437 bool unput_comma = false;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3438
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3439 if (whitespace_is_significant () && space_follows_previous_token ())
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3440 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3441 int c = text_yyinput ();
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3442 xunput (c);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3443
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3444 bool space_after = (c == ' ' || c == '\t');
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3445
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3446 if (! (prev_tok == ';' || prev_tok == ','
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3447 || prev_tok == '[' || prev_tok == '{'
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3448 || previous_token_is_binop ()
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3449 || ((tok == '+' || tok == '-') && space_after)))
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3450 unput_comma = true;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3451 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3452
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3453 return unput_comma;
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3454 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3455
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3456 int
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3457 octave_lexer::handle_unary_op (const char *pattern, int tok, bool convert,
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3458 bool bos, bool qit)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3459 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3460 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3461
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3462 return maybe_unput_comma_before_unary_op (tok)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3463 ? -1 : handle_op_internal (pattern, tok, convert, bos, qit, true);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3464 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3465
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3466 int
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3467 octave_lexer::handle_incompatible_unary_op (const char *pattern, int tok,
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3468 bool convert, bool bos, bool qit)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3469 {
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3470 lexer_debug (pattern);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3471
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3472 return maybe_unput_comma_before_unary_op (tok)
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3473 ? -1 : handle_op_internal (pattern, tok, convert, bos, qit, false);
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3474 }
9acb86e6ac90 4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16261
diff changeset
3475
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3476 int
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3477 octave_lexer::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
3478 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3479 lexer_debug (pattern);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3480
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3481 return (previous_token_value_is (']') && looking_at_matrix_or_assign_lhs)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3482 ? -1 : handle_op_internal (pattern, tok, false, false, false, true);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3483 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3484
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3485 int
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3486 octave_lexer::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
3487 {
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3488 lexer_debug (pattern);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3489
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3490 return (previous_token_value_is (']') && looking_at_matrix_or_assign_lhs)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3491 ? -1 : handle_op_internal (pattern, tok, false, false, false, false);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3492 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3493
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3494 int
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3495 octave_lexer::handle_op_internal (const char *pattern, int tok, bool convert,
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3496 bool bos, bool qit, bool compat)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3497 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3498 if (! compat)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3499 gripe_matlab_incompatible_operator (flex_yytext ());
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3500
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3501 push_token (new token (tok, input_line_number, current_input_column));
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3502
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3503 current_input_column += flex_yyleng ();
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3504 looking_for_object_index = false;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3505 at_beginning_of_statement = bos;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3506
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3507 return count_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3508 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3509
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3510 int
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3511 octave_lexer::handle_token (const std::string& name, int tok)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3512 {
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3513 token *tok_val = new token (tok, name, input_line_number,
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3514 current_input_column);
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3515
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3516 return handle_token (tok, tok_val);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3517 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3518
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3519 int
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3520 octave_lexer::handle_token (int tok, token *tok_val)
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3521 {
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3522 if (! tok_val)
16255
12bf6a3f8c45 store more info in token value class
John W. Eaton <jwe@octave.org>
parents: 16253
diff changeset
3523 tok_val = new token (tok, input_line_number, current_input_column);
16231
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3524
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3525 push_token (tok_val);
2b15ae55c721 put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents: 16230
diff changeset
3526
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3527 current_input_column += flex_yyleng ();
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3528
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3529 return count_token_internal (tok);
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3530 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3531
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3532 int
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3533 octave_lexer::count_token (int tok)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3534 {
16257
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3535 token *tok_val = new token (tok, input_line_number, current_input_column);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3536
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3537 push_token (tok_val);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3538
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3539 return count_token_internal (tok);
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3540 }
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3541
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3542 int
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3543 octave_lexer::count_token_internal (int tok)
db7f07b22b9b 1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents: 16255
diff changeset
3544 {
16229
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3545 if (tok != '\n')
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3546 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3547 Vtoken_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3548 token_count++;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3549 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3550
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3551 return show_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3552 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3553
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3554 int
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3555 octave_lexer::show_token (int tok)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3556 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3557 if (Vdisplay_tokens)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3558 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3559
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3560 if (lexer_debug_flag)
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3561 {
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3562 std::cerr << "R: ";
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3563 display_token (tok);
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3564 std::cerr << std::endl;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3565 }
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3566
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3567 return tok;
7b7b1e4968e8 use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents: 16228
diff changeset
3568 }