Mercurial > octave-nkf
annotate libinterp/parse-tree/lex.ll @ 16273:c5e5f6ccac5d
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author | John W. Eaton <jwe@octave.org> |
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date | Mon, 11 Mar 2013 14:32:53 -0400 |
parents | 87069bd38107 |
children | 3c265e4dba6d dd7de0345124 |
rev | line source |
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1994 | 1 /* |
1 | 2 |
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3 Copyright (C) 1993-2012 John W. Eaton |
1 | 4 |
5 This file is part of Octave. | |
6 | |
7 Octave is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
10 option) any later version. | |
1 | 11 |
12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
1 | 20 |
21 */ | |
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 |
4753 | 34 %option prefix = "octave_" |
16146 | 35 %option noyywrap |
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36 %option reentrant |
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37 %option bison-bridge |
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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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44 } |
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45 |
4208 | 46 %s COMMAND_START |
47 %s MATRIX_START | |
4240 | 48 |
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49 %x INPUT_FILE_START |
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51 %x BLOCK_COMMENT_START |
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52 %x LINE_COMMENT_START |
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53 |
1 | 54 %{ |
240 | 55 |
1341 | 56 #include <cctype> |
57 #include <cstring> | |
58 | |
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59 #include <iostream> |
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60 #include <set> |
5765 | 61 #include <sstream> |
1823 | 62 #include <string> |
4214 | 63 #include <stack> |
1823 | 64 |
4093 | 65 #include <sys/types.h> |
66 #include <unistd.h> | |
67 | |
2926 | 68 #include "cmd-edit.h" |
4153 | 69 #include "quit.h" |
4910 | 70 #include "lo-mappers.h" |
2926 | 71 |
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72 // These would be alphabetical, but oct-parse.h must be included before |
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73 // oct-gperf.h and oct-parse.h must be included after token.h and the tree |
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74 // class declarations. We can't include oct-parse.h in oct-gperf.h |
1497 | 75 // because it may not be protected to allow it to be included multiple |
76 // times. | |
77 | |
4264 | 78 #include "Cell.h" |
3665 | 79 #include "comment-list.h" |
2181 | 80 #include "defun.h" |
1355 | 81 #include "error.h" |
4910 | 82 #include "gripes.h" |
1351 | 83 #include "input.h" |
1355 | 84 #include "lex.h" |
2891 | 85 #include "ov.h" |
1355 | 86 #include "parse.h" |
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87 #include "parse-private.h" |
2987 | 88 #include "pt-all.h" |
2891 | 89 #include "symtab.h" |
90 #include "token.h" | |
91 #include "toplev.h" | |
1355 | 92 #include "utils.h" |
93 #include "variables.h" | |
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94 #include <oct-parse.h> |
2492 | 95 #include <oct-gperf.h> |
1 | 96 |
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97 #if defined (GNULIB_NAMESPACE) |
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98 // Calls to the following functions appear in the generated output from |
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99 // flex without the namespace tag. Redefine them so we will use them |
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100 // via the gnulib namespace. |
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101 #define fprintf GNULIB_NAMESPACE::fprintf |
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102 #define fwrite GNULIB_NAMESPACE::fwrite |
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103 #define isatty GNULIB_NAMESPACE::isatty |
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104 #define malloc GNULIB_NAMESPACE::malloc |
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105 #define realloc GNULIB_NAMESPACE::realloc |
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106 #endif |
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107 |
2716 | 108 #if ! (defined (FLEX_SCANNER) \ |
109 && defined (YY_FLEX_MAJOR_VERSION) && YY_FLEX_MAJOR_VERSION >= 2 \ | |
110 && defined (YY_FLEX_MINOR_VERSION) && YY_FLEX_MINOR_VERSION >= 5) | |
111 #error lex.l requires flex version 2.5.4 or later | |
112 #endif | |
113 | |
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114 #define YY_EXTRA_TYPE octave_lexer * |
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115 #define curr_lexer yyextra |
4753 | 116 |
117 // Arrange to get input via readline. | |
118 | |
119 #ifdef YY_INPUT | |
120 #undef YY_INPUT | |
121 #endif | |
122 #define YY_INPUT(buf, result, max_size) \ | |
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123 result = curr_lexer->read (buf, max_size) |
4753 | 124 |
125 // Try to avoid crashing out completely on fatal scanner errors. | |
126 | |
127 #ifdef YY_FATAL_ERROR | |
128 #undef YY_FATAL_ERROR | |
129 #endif | |
130 #define YY_FATAL_ERROR(msg) \ | |
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131 (yyget_extra (yyscanner))->fatal_error (msg) |
4753 | 132 |
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133 static bool Vdisplay_tokens = false; |
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134 |
4910 | 135 static unsigned int Vtoken_count = 0; |
136 | |
8535 | 137 // Internal variable for lexer debugging state. |
138 static bool lexer_debug_flag = false; | |
139 | |
146 | 140 // Forward declarations for functions defined at the bottom of this |
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141 // file that are needed inside the lexer actions. |
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142 |
3523 | 143 static std::string strip_trailing_whitespace (char *s); |
1 | 144 |
145 %} | |
146 | |
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147 D [0-9] |
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148 S [ \t] |
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149 NL ((\n)|(\r)|(\r\n)) |
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150 CONT ((\.\.\.)|(\\)) |
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151 Im [iIjJ] |
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152 CCHAR [#%] |
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153 IDENT ([_$a-zA-Z][_$a-zA-Z0-9]*) |
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154 EXPON ([DdEe][+-]?{D}+) |
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155 NUMBER (({D}+\.?{D}*{EXPON}?)|(\.{D}+{EXPON}?)|(0[xX][0-9a-fA-F]+)) |
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156 |
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157 ANY_INCLUDING_NL (.|{NL}) |
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158 |
1 | 159 %% |
160 | |
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161 %{ |
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162 // Make script and function files start with a bogus token. This makes |
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163 // the parser go down a special path. |
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164 %} |
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165 |
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166 <INPUT_FILE_START>{ANY_INCLUDING_NL} { |
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167 curr_lexer->lexer_debug ("<INPUT_FILE_START>{ANY_INCLUDING_NL}"); |
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168 |
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169 curr_lexer->xunput (yytext[0]); |
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170 |
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171 // May be reset later if we see "function" or "classdef" appears |
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172 // as the first token. |
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173 curr_lexer->reading_script_file = true; |
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174 |
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175 curr_lexer->pop_start_state (); |
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176 |
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177 return curr_lexer->show_token (INPUT_FILE); |
4238 | 178 } |
179 | |
968 | 180 %{ |
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181 // Help and other command-style functions. |
968 | 182 %} |
183 | |
4208 | 184 <COMMAND_START>{NL} { |
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185 curr_lexer->lexer_debug ("<COMMAND_START>{NL}"); |
8535 | 186 |
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187 curr_lexer->input_line_number++; |
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188 curr_lexer->current_input_column = 1; |
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189 |
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190 curr_lexer->looking_for_object_index = false; |
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191 curr_lexer->at_beginning_of_statement = true; |
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192 |
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193 curr_lexer->pop_start_state (); |
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194 |
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195 return curr_lexer->count_token ('\n'); |
967 | 196 } |
1 | 197 |
4208 | 198 <COMMAND_START>[\;\,] { |
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199 curr_lexer->lexer_debug ("<COMMAND_START>[\\;\\,]"); |
8535 | 200 |
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201 curr_lexer->looking_for_object_index = false; |
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202 curr_lexer->at_beginning_of_statement = true; |
5102 | 203 |
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204 curr_lexer->pop_start_state (); |
5102 | 205 |
206 if (strcmp (yytext, ",") == 0) | |
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207 return curr_lexer->handle_token (','); |
967 | 208 else |
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209 return curr_lexer->handle_token (';'); |
967 | 210 } |
1 | 211 |
4208 | 212 <COMMAND_START>[\"\'] { |
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213 curr_lexer->lexer_debug ("<COMMAND_START>[\\\"\\']"); |
8535 | 214 |
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215 curr_lexer->at_beginning_of_statement = false; |
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216 |
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217 curr_lexer->current_input_column++; |
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218 int tok = curr_lexer->handle_string (yytext[0]); |
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219 |
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220 return curr_lexer->count_token_internal (tok); |
975 | 221 } |
222 | |
4923 | 223 <COMMAND_START>[^#% \t\r\n\;\,\"\'][^ \t\r\n\;\,]*{S}* { |
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224 curr_lexer->lexer_debug ("<COMMAND_START>[^#% \\t\\r\\n\\;\\,\\\"\\'][^ \\t\\r\\n\\;\\,]*{S}*"); |
8535 | 225 |
3523 | 226 std::string tok = strip_trailing_whitespace (yytext); |
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227 |
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228 curr_lexer->looking_for_object_index = false; |
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229 curr_lexer->at_beginning_of_statement = false; |
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230 |
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231 return curr_lexer->handle_token (tok, SQ_STRING); |
967 | 232 } |
1 | 233 |
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234 <MATRIX_START>{S}* { |
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235 curr_lexer->lexer_debug ("<MATRIX_START>{S}*"); |
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236 |
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237 curr_lexer->mark_previous_token_trailing_space (); |
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238 } |
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239 |
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240 <MATRIX_START>{NL} { |
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241 curr_lexer->lexer_debug ("<MATRIX_START>{NL}"); |
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242 |
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243 if (curr_lexer->nesting_level.is_paren ()) |
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244 curr_lexer->gripe_matlab_incompatible ("bare newline inside parentheses"); |
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245 else |
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246 { |
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247 int tok = curr_lexer->previous_token_value (); |
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248 |
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249 if (! (tok == ';' || tok == '[' || tok == '{')) |
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250 curr_lexer->xunput (';'); |
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251 } |
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252 } |
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253 |
968 | 254 %{ |
1 | 255 // For this and the next two rules, we're looking at ']', and we |
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256 // need to know if the next token is '=' or '=='. |
1 | 257 // |
258 // It would have been so much easier if the delimiters were simply | |
259 // different for the expression on the left hand side of the equals | |
260 // operator. | |
971 | 261 // |
262 // It's also a pain in the ass to decide whether to insert a comma | |
263 // after seeing a ']' character... | |
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264 |
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265 // FIXME -- we need to handle block comments here. |
968 | 266 %} |
267 | |
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268 <MATRIX_START>\] { |
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269 curr_lexer->lexer_debug ("<MATRIX_START>\\]"); |
8535 | 270 |
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271 curr_lexer->looking_at_object_index.pop_front (); |
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272 |
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273 curr_lexer->looking_for_object_index = true; |
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274 curr_lexer->at_beginning_of_statement = false; |
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275 |
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276 int tok_to_return = curr_lexer->handle_close_bracket (']'); |
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277 |
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278 return curr_lexer->count_token (']'); |
4608 | 279 } |
280 | |
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281 %{ |
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282 // FIXME -- we need to handle block comments here. |
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283 %} |
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284 |
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285 <MATRIX_START>\} { |
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286 curr_lexer->lexer_debug ("<MATRIX_START>\\}*"); |
8535 | 287 |
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288 curr_lexer->looking_at_object_index.pop_front (); |
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289 |
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290 curr_lexer->looking_for_object_index = true; |
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291 curr_lexer->at_beginning_of_statement = false; |
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292 |
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293 int tok_to_return = curr_lexer->handle_close_bracket ('}'); |
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294 |
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295 return curr_lexer->count_token ('}'); |
967 | 296 } |
1 | 297 |
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298 \[ { |
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299 curr_lexer->lexer_debug ("\\["); |
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301 bool unput_comma = false; |
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302 |
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303 if (curr_lexer->whitespace_is_significant () |
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304 && curr_lexer->space_follows_previous_token ()) |
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305 { |
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306 int tok = curr_lexer->previous_token_value (); |
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307 |
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308 if (! (tok == '[' || tok == '{' |
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309 || curr_lexer->previous_token_is_binop ())) |
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310 unput_comma = true; |
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311 } |
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312 |
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313 if (unput_comma) |
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314 { |
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315 yyless (0); |
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316 curr_lexer->xunput (','); |
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317 } |
5615 | 318 else |
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319 { |
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320 curr_lexer->nesting_level.bracket (); |
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321 |
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322 curr_lexer->looking_at_object_index.push_front (false); |
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323 |
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324 curr_lexer->current_input_column += yyleng; |
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325 curr_lexer->looking_for_object_index = false; |
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326 curr_lexer->at_beginning_of_statement = false; |
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327 |
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328 if (curr_lexer->defining_func |
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329 && ! curr_lexer->parsed_function_name.top ()) |
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330 curr_lexer->looking_at_return_list = true; |
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331 else |
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332 curr_lexer->looking_at_matrix_or_assign_lhs = true; |
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333 |
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334 curr_lexer->decrement_promptflag (); |
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335 |
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336 curr_lexer->bracketflag++; |
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337 |
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338 curr_lexer->push_start_state (MATRIX_START); |
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339 |
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340 return curr_lexer->count_token ('['); |
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341 } |
967 | 342 } |
1 | 343 |
968 | 344 \] { |
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345 curr_lexer->lexer_debug ("\\]"); |
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347 curr_lexer->nesting_level.remove (); |
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348 |
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349 curr_lexer->looking_at_object_index.pop_front (); |
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350 |
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351 curr_lexer->looking_for_object_index = true; |
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352 curr_lexer->at_beginning_of_statement = false; |
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353 |
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354 return curr_lexer->handle_token (']'); |
968 | 355 } |
356 | |
357 %{ | |
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358 // Gobble comments. |
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359 %} |
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360 |
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361 %{ |
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362 // Start of a block comment. If the comment marker appears immediately |
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363 // after a block of full-line comments, finish the full line comment |
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364 // block. |
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365 %} |
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366 |
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367 ^{S}*{CCHAR}\{{S}*{NL} { |
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368 curr_lexer->lexer_debug ("^{S}*{CCHAR}\{{S}*{NL}"); |
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369 |
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370 yyless (0); |
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371 |
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372 if (curr_lexer->start_state () == LINE_COMMENT_START) |
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373 { |
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374 if (! curr_lexer->comment_text.empty ()) |
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375 curr_lexer->finish_comment (octave_comment_elt::full_line); |
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376 |
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377 curr_lexer->pop_start_state (); |
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378 } |
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379 |
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380 curr_lexer->push_start_state (BLOCK_COMMENT_START); |
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381 |
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382 } |
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383 |
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384 <BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL} { |
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385 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\{{S}*{NL}"); |
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386 |
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387 curr_lexer->input_line_number++; |
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388 curr_lexer->current_input_column = 1; |
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389 |
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390 if (curr_lexer->block_comment_nesting_level) |
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391 curr_lexer->comment_text = "\n"; |
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392 |
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393 curr_lexer->block_comment_nesting_level++; |
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394 } |
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395 |
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396 %{ |
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397 // End of a block comment. If this block comment is nested inside |
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398 // another, wait for the outermost block comment block to be closed |
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399 // before storing the comment. |
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400 %} |
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401 |
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402 <BLOCK_COMMENT_START>^{S}*{CCHAR}\}{S}*{NL} { |
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403 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>^{S}*{CCHAR}\\}{S}*{NL}"); |
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404 |
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405 curr_lexer->input_line_number++; |
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406 curr_lexer->current_input_column = 1; |
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407 |
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408 if (curr_lexer->block_comment_nesting_level > 1) |
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409 curr_lexer->comment_text = "\n"; |
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410 else |
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411 curr_lexer->finish_comment (octave_comment_elt::block); |
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412 |
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413 curr_lexer->block_comment_nesting_level--; |
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414 curr_lexer->pop_start_state (); |
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415 } |
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416 |
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417 %{ |
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418 // Body of a block comment. |
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419 %} |
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420 |
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421 <BLOCK_COMMENT_START>.*{NL} { |
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422 curr_lexer->lexer_debug ("<BLOCK_COMMENT_START>.*{NL}"); |
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423 |
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424 curr_lexer->input_line_number++; |
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425 curr_lexer->current_input_column = 1; |
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426 curr_lexer->comment_text += yytext; |
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427 } |
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428 |
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429 %{ |
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430 // Full-line or end-of-line comment. |
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431 %} |
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432 |
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433 {S}*{CCHAR}.*{NL} { |
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434 curr_lexer->lexer_debug ("{S}*{CCHAR}.*{NL}"); |
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435 |
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436 curr_lexer->push_start_state (LINE_COMMENT_START); |
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437 yyless (0); |
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438 } |
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439 |
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440 <LINE_COMMENT_START>{S}*{CCHAR}.*{NL} { |
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441 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{S}*{CCHAR}.*{NL}"); |
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442 |
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443 bool full_line_comment = curr_lexer->current_input_column == 1; |
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444 curr_lexer->input_line_number++; |
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445 curr_lexer->current_input_column = 1; |
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446 |
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447 bool have_space = false; |
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448 size_t len = yyleng; |
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449 size_t i = 0; |
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450 while (i < len) |
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451 { |
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452 char c = yytext[i]; |
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453 if (c == ' ' || c == '\t') |
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454 { |
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455 have_space = true; |
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456 i++; |
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457 } |
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458 else |
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459 break; |
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460 } |
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461 |
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462 while (i < len) |
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463 { |
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464 char c = yytext[i]; |
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465 if (c == '#' || c == '%') |
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466 i++; |
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467 else |
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468 break; |
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469 } |
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470 |
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471 curr_lexer->comment_text += &yytext[i]; |
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472 |
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473 if (! full_line_comment) |
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474 { |
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475 if (have_space) |
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476 curr_lexer->mark_previous_token_trailing_space (); |
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477 |
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478 curr_lexer->finish_comment (octave_comment_elt::end_of_line); |
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479 |
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480 curr_lexer->pop_start_state (); |
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481 } |
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482 } |
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483 |
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484 %{ |
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485 // End of a block of full-line comments. |
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486 %} |
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487 |
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488 <LINE_COMMENT_START>{ANY_INCLUDING_NL} { |
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489 curr_lexer->lexer_debug ("<LINE_COMMENT_START>{ANY_INCLUDING_NL}"); |
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490 |
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491 curr_lexer->xunput (yytext[0]); |
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492 |
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493 curr_lexer->finish_comment (octave_comment_elt::full_line); |
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494 |
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495 curr_lexer->pop_start_state (); |
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496 } |
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497 |
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498 %{ |
968 | 499 // Imaginary numbers. |
500 %} | |
501 | |
502 {NUMBER}{Im} { | |
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503 curr_lexer->lexer_debug ("{NUMBER}{Im}"); |
8535 | 504 |
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505 int tok = curr_lexer->previous_token_value (); |
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506 |
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507 if (curr_lexer->whitespace_is_significant () |
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508 && curr_lexer->space_follows_previous_token () |
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509 && ! (tok == '[' || tok == '{' |
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510 || curr_lexer->previous_token_is_binop ())) |
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511 { |
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512 yyless (0); |
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513 unput (','); |
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514 } |
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515 else |
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516 { |
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517 curr_lexer->handle_number (); |
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518 return curr_lexer->count_token_internal (IMAG_NUM); |
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519 } |
968 | 520 } |
521 | |
522 %{ | |
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523 // Real numbers. Don't grab the '.' part of a dot operator as part of |
968 | 524 // the constant. |
525 %} | |
526 | |
8535 | 527 {D}+/\.[\*/\\^\'] | |
968 | 528 {NUMBER} { |
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529 curr_lexer->lexer_debug ("{D}+/\\.[\\*/\\^\\']|{NUMBER}"); |
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530 |
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531 int tok = curr_lexer->previous_token_value (); |
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532 |
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533 if (curr_lexer->whitespace_is_significant () |
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534 && curr_lexer->space_follows_previous_token () |
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535 && ! (tok == '[' || tok == '{' |
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536 || curr_lexer->previous_token_is_binop ())) |
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537 { |
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538 yyless (0); |
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539 unput (','); |
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540 } |
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541 else |
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542 { |
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543 curr_lexer->handle_number (); |
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544 return curr_lexer->count_token_internal (NUM); |
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545 } |
968 | 546 } |
547 | |
548 %{ | |
549 // Eat whitespace. Whitespace inside matrix constants is handled by | |
4208 | 550 // the <MATRIX_START> start state code above. |
968 | 551 %} |
552 | |
967 | 553 {S}* { |
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554 curr_lexer->current_input_column += yyleng; |
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555 |
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556 curr_lexer->mark_previous_token_trailing_space (); |
967 | 557 } |
558 | |
968 | 559 %{ |
560 // Continuation lines. Allow comments after continuations. | |
561 %} | |
562 | |
967 | 563 {CONT}{S}*{NL} | |
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564 {CONT}{S}*{CCHAR}.*{NL} { |
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565 curr_lexer->lexer_debug ("{CONT}{S}*{NL}|{CONT}{S}*{CCHAR}.*{NL}"); |
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566 |
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567 curr_lexer->handle_continuation (); |
967 | 568 } |
1 | 569 |
968 | 570 %{ |
571 // End of file. | |
572 %} | |
573 | |
967 | 574 <<EOF>> { |
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575 return curr_lexer->handle_end_of_input (); |
967 | 576 } |
1 | 577 |
968 | 578 %{ |
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579 // Identifiers. |
968 | 580 %} |
581 | |
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582 {IDENT} { |
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583 curr_lexer->lexer_debug ("{IDENT}"); |
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584 |
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585 int tok = curr_lexer->previous_token_value (); |
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586 |
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587 if (curr_lexer->whitespace_is_significant () |
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588 && curr_lexer->space_follows_previous_token () |
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589 && ! (tok == '[' || tok == '{' |
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590 || curr_lexer->previous_token_is_binop ())) |
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591 { |
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592 yyless (0); |
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593 unput (','); |
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594 } |
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595 else |
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596 { |
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597 if (! curr_lexer->looking_at_decl_list |
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598 && curr_lexer->previous_token_may_be_command ()) |
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599 { |
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600 yyless (0); |
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601 curr_lexer->push_start_state (COMMAND_START); |
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602 } |
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603 else |
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604 { |
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605 int id_tok = curr_lexer->handle_identifier (); |
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606 |
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607 if (id_tok >= 0) |
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608 return curr_lexer->count_token_internal (id_tok); |
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609 } |
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610 } |
967 | 611 } |
1 | 612 |
968 | 613 %{ |
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614 // Superclass method identifiers. |
9476 | 615 %} |
616 | |
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617 {IDENT}@{IDENT} | |
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618 {IDENT}@{IDENT}.{IDENT} { |
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619 curr_lexer->lexer_debug ("{IDENT}@{IDENT}|{IDENT}@{IDENT}.{IDENT}"); |
9476 | 620 |
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621 int id_tok = curr_lexer->handle_superclass_identifier (); |
9476 | 622 |
623 if (id_tok >= 0) | |
624 { | |
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625 curr_lexer->looking_for_object_index = true; |
9476 | 626 |
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627 return curr_lexer->count_token_internal (SUPERCLASSREF); |
9476 | 628 } |
629 } | |
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630 |
9476 | 631 %{ |
632 // Metaclass query | |
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633 %} |
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634 |
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635 \?{IDENT} | |
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636 \?{IDENT}\.{IDENT} { |
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637 curr_lexer->lexer_debug ("\\?{IDENT}|\\?{IDENT}\\.{IDENT}"); |
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638 |
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639 int id_tok = curr_lexer->handle_meta_identifier (); |
9476 | 640 |
641 if (id_tok >= 0) | |
642 { | |
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643 curr_lexer->looking_for_object_index = true; |
9476 | 644 |
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645 return curr_lexer->count_token_internal (METAQUERY); |
9476 | 646 } |
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647 } |
9476 | 648 |
649 %{ | |
650 // Function handles and superclass references | |
4342 | 651 %} |
652 | |
4930 | 653 "@" { |
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654 curr_lexer->lexer_debug ("@"); |
8535 | 655 |
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656 curr_lexer->current_input_column++; |
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657 |
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658 curr_lexer->looking_at_function_handle++; |
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659 curr_lexer->looking_for_object_index = false; |
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660 curr_lexer->at_beginning_of_statement = false; |
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661 |
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662 return curr_lexer->count_token ('@'); |
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663 |
4342 | 664 } |
665 | |
666 %{ | |
968 | 667 // A new line character. New line characters inside matrix constants |
4208 | 668 // are handled by the <MATRIX_START> start state code above. If closest |
985 | 669 // nesting is inside parentheses, don't return a row separator. |
968 | 670 %} |
671 | |
967 | 672 {NL} { |
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673 curr_lexer->lexer_debug ("{NL}"); |
8535 | 674 |
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675 curr_lexer->input_line_number++; |
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676 curr_lexer->current_input_column = 1; |
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677 |
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678 if (curr_lexer->nesting_level.none ()) |
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679 { |
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680 curr_lexer->at_beginning_of_statement = true; |
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681 return curr_lexer->count_token ('\n'); |
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682 } |
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683 else if (curr_lexer->nesting_level.is_paren ()) |
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684 { |
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685 curr_lexer->at_beginning_of_statement = false; |
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686 curr_lexer->gripe_matlab_incompatible ("bare newline inside parentheses"); |
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687 } |
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688 else if (curr_lexer->nesting_level.is_bracket_or_brace ()) |
985 | 689 return LEXICAL_ERROR; |
967 | 690 } |
1 | 691 |
968 | 692 %{ |
693 // Single quote can either be the beginning of a string or a transpose | |
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694 // operator. |
968 | 695 %} |
696 | |
967 | 697 "'" { |
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698 curr_lexer->lexer_debug ("'"); |
8535 | 699 |
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700 int tok = curr_lexer->previous_token_value (); |
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701 |
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702 bool transpose = false; |
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703 |
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704 if (curr_lexer->whitespace_is_significant ()) |
967 | 705 { |
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706 if (curr_lexer->space_follows_previous_token ()) |
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707 { |
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708 if (tok == '[' || tok == '{' |
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709 || curr_lexer->previous_token_is_binop ()) |
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710 { |
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711 curr_lexer->current_input_column++; |
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712 int retval = curr_lexer->handle_string ('\''); |
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713 return curr_lexer->count_token_internal (retval); |
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714 } |
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715 else |
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716 { |
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717 yyless (0); |
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718 curr_lexer->xunput (','); |
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719 } |
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720 } |
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721 else |
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722 { |
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723 if (tok == '[' || tok == '{' |
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724 || curr_lexer->previous_token_is_binop () |
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725 || curr_lexer->previous_token_is_keyword ()) |
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726 { |
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727 curr_lexer->current_input_column++; |
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728 int retval = curr_lexer->handle_string ('\''); |
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729 return curr_lexer->count_token_internal (retval); |
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730 } |
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731 else |
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732 return curr_lexer->count_token (QUOTE); |
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733 } |
967 | 734 } |
735 else | |
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736 { |
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737 if (! tok || tok == '[' || tok == '{' || tok == '(' |
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738 || curr_lexer->previous_token_is_binop () |
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739 || curr_lexer->previous_token_is_keyword ()) |
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740 { |
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741 curr_lexer->current_input_column++; |
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742 int retval = curr_lexer->handle_string ('\''); |
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743 return curr_lexer->count_token_internal (retval); |
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744 } |
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745 else |
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746 return curr_lexer->count_token (QUOTE); |
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747 } |
967 | 748 } |
1 | 749 |
968 | 750 %{ |
971 | 751 // Double quotes always begin strings. |
752 %} | |
753 | |
973 | 754 \" { |
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755 curr_lexer->lexer_debug ("\""); |
8535 | 756 |
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757 int tok = curr_lexer->previous_token_value (); |
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758 |
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759 bool transpose = false; |
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760 |
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761 if (curr_lexer->whitespace_is_significant ()) |
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762 { |
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763 if (curr_lexer->space_follows_previous_token ()) |
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764 { |
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765 if (tok == '[' || tok == '{' |
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766 || curr_lexer->previous_token_is_binop ()) |
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767 { |
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768 curr_lexer->current_input_column++; |
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769 int retval = curr_lexer->handle_string ('"'); |
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770 return curr_lexer->count_token_internal (retval); |
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771 } |
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772 else |
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773 { |
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774 yyless (0); |
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775 curr_lexer->xunput (','); |
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776 } |
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777 } |
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778 else |
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779 { |
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780 curr_lexer->current_input_column++; |
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781 int retval = curr_lexer->handle_string ('"'); |
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782 return curr_lexer->count_token_internal (retval); |
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783 } |
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784 } |
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785 else |
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786 { |
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787 curr_lexer->current_input_column++; |
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788 int retval = curr_lexer->handle_string ('"'); |
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789 return curr_lexer->count_token_internal (retval); |
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790 } |
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791 } |
971 | 792 |
793 %{ | |
968 | 794 // Other operators. |
795 %} | |
796 | |
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797 ":" { return curr_lexer->handle_op (":", ':'); } |
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798 ".+" { return curr_lexer->handle_incompatible_op (".+", EPLUS); } |
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799 ".-" { return curr_lexer->handle_incompatible_op (".-", EMINUS); } |
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800 ".*" { return curr_lexer->handle_op (".*", EMUL); } |
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801 "./" { return curr_lexer->handle_op ("./", EDIV); } |
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802 ".\\" { return curr_lexer->handle_op (".\\", ELEFTDIV); } |
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803 ".^" { return curr_lexer->handle_op (".^", EPOW); } |
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804 ".**" { return curr_lexer->handle_incompatible_op (".**", EPOW); } |
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805 "<=" { return curr_lexer->handle_op ("<=", EXPR_LE); } |
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806 "==" { return curr_lexer->handle_op ("==", EXPR_EQ); } |
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807 "~=" { return curr_lexer->handle_op ("~=", EXPR_NE); } |
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808 "!=" { return curr_lexer->handle_incompatible_op ("!=", EXPR_NE); } |
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809 ">=" { return curr_lexer->handle_op (">=", EXPR_GE); } |
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810 "&" { return curr_lexer->handle_op ("&", EXPR_AND); } |
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811 "|" { return curr_lexer->handle_op ("|", EXPR_OR); } |
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812 "<" { return curr_lexer->handle_op ("<", EXPR_LT); } |
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813 ">" { return curr_lexer->handle_op (">", EXPR_GT); } |
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814 "*" { return curr_lexer->handle_op ("*", '*'); } |
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815 |
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816 "/" { |
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817 int prev_tok = curr_lexer->previous_token_value (); |
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818 bool space_before = curr_lexer->space_follows_previous_token (); |
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819 int c = curr_lexer->text_yyinput (); |
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820 curr_lexer->xunput (c); |
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821 bool space_after = (c == ' ' || c == '\t'); |
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822 |
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823 if (space_before && ! space_after |
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824 && curr_lexer->previous_token_may_be_command ()) |
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825 { |
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826 yyless (0); |
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827 curr_lexer->push_start_state (COMMAND_START); |
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828 } |
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829 else |
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830 return curr_lexer->handle_op ("/", '/'); |
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831 } |
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832 |
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833 "\\" { return curr_lexer->handle_op ("\\", LEFTDIV); } |
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834 "^" { return curr_lexer->handle_op ("^", POW); } |
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835 "**" { return curr_lexer->handle_incompatible_op ("**", POW); } |
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836 "&&" { return curr_lexer->handle_op ("&&", EXPR_AND_AND); } |
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837 "||" { return curr_lexer->handle_op ("||", EXPR_OR_OR); } |
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838 "<<" { return curr_lexer->handle_incompatible_op ("<<", LSHIFT); } |
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839 ">>" { return curr_lexer->handle_incompatible_op (">>", RSHIFT); } |
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840 |
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841 ";" { |
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842 bool at_beginning_of_statement |
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843 = (! (curr_lexer->whitespace_is_significant () |
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844 || curr_lexer->looking_at_object_index.front ())); |
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845 |
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846 return curr_lexer->handle_op (";", ';', true, at_beginning_of_statement); |
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847 } |
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848 |
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849 "+" { |
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850 int tok = curr_lexer->handle_unary_op ("+", '+'); |
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851 |
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852 if (tok < 0) |
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853 { |
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854 yyless (0); |
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855 curr_lexer->xunput (','); |
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856 } |
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857 else |
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858 return tok; |
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859 } |
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860 |
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861 "-" { |
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862 int prev_tok = curr_lexer->previous_token_value (); |
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863 bool space_before = curr_lexer->space_follows_previous_token (); |
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864 int c = curr_lexer->text_yyinput (); |
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865 curr_lexer->xunput (c); |
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866 bool space_after = (c == ' ' || c == '\t'); |
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867 |
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868 if (space_before && ! space_after |
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869 && curr_lexer->previous_token_may_be_command ()) |
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870 { |
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871 yyless (0); |
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872 curr_lexer->push_start_state (COMMAND_START); |
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873 } |
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874 else |
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875 { |
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876 int tok = curr_lexer->handle_unary_op ("-", '-'); |
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877 |
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878 if (tok < 0) |
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879 { |
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880 yyless (0); |
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881 curr_lexer->xunput (','); |
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882 } |
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883 else |
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884 return tok; |
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885 } |
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886 } |
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887 |
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888 "~" { |
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889 int tok = curr_lexer->handle_unary_op ("~", EXPR_NOT); |
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890 |
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891 if (tok < 0) |
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892 { |
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893 yyless (0); |
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894 curr_lexer->xunput (','); |
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895 } |
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896 else |
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897 return tok; |
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898 } |
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899 |
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900 "!" { |
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901 int tok = curr_lexer->handle_incompatible_unary_op ("!", EXPR_NOT); |
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902 |
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903 if (tok < 0) |
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904 { |
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905 yyless (0); |
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906 curr_lexer->xunput (','); |
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907 } |
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908 else |
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909 return tok; |
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910 } |
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911 |
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912 "," { |
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913 bool at_beginning_of_statement |
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914 = (! (curr_lexer->whitespace_is_significant () |
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915 || curr_lexer->looking_at_object_index.front ())); |
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916 |
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917 return curr_lexer->handle_op |
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918 (",", ',', true, at_beginning_of_statement); |
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919 } |
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920 |
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921 ".'" { |
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922 return curr_lexer->handle_op (".'", TRANSPOSE, true, false); |
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923 } |
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924 |
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925 "++" { |
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926 int tok = curr_lexer->handle_incompatible_unary_op |
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927 ("++", PLUS_PLUS, true, false, true); |
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928 |
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929 if (tok < 0) |
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930 { |
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931 yyless (0); |
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932 curr_lexer->xunput (','); |
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933 } |
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934 else |
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935 return tok; |
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936 } |
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937 |
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938 "--" { |
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939 int tok = curr_lexer->handle_incompatible_unary_op |
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940 ("--", MINUS_MINUS, true, false, true); |
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941 |
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942 if (tok < 0) |
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943 { |
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944 yyless (0); |
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945 curr_lexer->xunput (','); |
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946 } |
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947 else |
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948 return tok; |
967 | 949 } |
1 | 950 |
967 | 951 "(" { |
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952 curr_lexer->lexer_debug ("("); |
8535 | 953 |
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954 bool unput_comma = false; |
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955 |
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956 if (curr_lexer->whitespace_is_significant () |
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957 && curr_lexer->space_follows_previous_token ()) |
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958 { |
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959 int tok = curr_lexer->previous_token_value (); |
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960 |
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961 if (! (tok == '[' || tok == '{' |
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962 || curr_lexer->previous_token_is_binop ())) |
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963 unput_comma = true; |
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964 } |
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965 |
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966 if (unput_comma) |
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967 { |
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968 yyless (0); |
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969 curr_lexer->xunput (','); |
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970 } |
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971 else |
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972 { |
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973 // If we are looking for an object index, then push TRUE for |
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974 // looking_at_object_index. Otherwise, just push whatever state |
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975 // is current (so that we can pop it off the stack when we find |
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976 // the matching close paren). |
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977 |
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978 curr_lexer->looking_at_object_index.push_front |
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979 (curr_lexer->looking_for_object_index); |
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980 |
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981 curr_lexer->looking_at_indirect_ref = false; |
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982 curr_lexer->looking_for_object_index = false; |
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983 curr_lexer->at_beginning_of_statement = false; |
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984 |
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985 curr_lexer->nesting_level.paren (); |
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986 curr_lexer->decrement_promptflag (); |
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987 |
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988 return curr_lexer->handle_token ('('); |
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989 } |
967 | 990 } |
991 | |
992 ")" { | |
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993 curr_lexer->lexer_debug (")"); |
8535 | 994 |
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995 curr_lexer->nesting_level.remove (); |
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996 curr_lexer->current_input_column++; |
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997 |
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998 curr_lexer->looking_at_object_index.pop_front (); |
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999 |
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1000 curr_lexer->looking_for_object_index = true; |
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1001 curr_lexer->at_beginning_of_statement = false; |
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1002 |
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1003 if (curr_lexer->looking_at_anon_fcn_args) |
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1004 { |
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1005 curr_lexer->looking_at_anon_fcn_args = false; |
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1006 curr_lexer->nesting_level.anon_fcn_body (); |
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1007 } |
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1008 |
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1009 return curr_lexer->count_token (')'); |
967 | 1010 } |
1011 | |
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1012 "." { |
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1013 curr_lexer->lexer_debug ("."); |
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1014 |
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1015 curr_lexer->looking_for_object_index = false; |
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1016 curr_lexer->at_beginning_of_statement = false; |
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1017 |
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1018 return curr_lexer->handle_token ('.'); |
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1019 } |
8535 | 1020 |
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1021 %{ |
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1022 // = and op= operators. |
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1023 %} |
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1024 |
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1025 "=" { return curr_lexer->handle_op ("=", '='); } |
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1026 "+=" { return curr_lexer->handle_incompatible_op ("+=", ADD_EQ); } |
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1027 "-=" { return curr_lexer->handle_incompatible_op ("-=", SUB_EQ); } |
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1028 "*=" { return curr_lexer->handle_incompatible_op ("*=", MUL_EQ); } |
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1029 "/=" { return curr_lexer->handle_incompatible_op ("/=", DIV_EQ); } |
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1030 "\\=" { return curr_lexer->handle_incompatible_op ("\\=", LEFTDIV_EQ); } |
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1031 ".+=" { return curr_lexer->handle_incompatible_op (".+=", ADD_EQ); } |
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1032 ".-=" { return curr_lexer->handle_incompatible_op (".-=", SUB_EQ); } |
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1033 ".*=" { return curr_lexer->handle_incompatible_op (".*=", EMUL_EQ); } |
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1034 "./=" { return curr_lexer->handle_incompatible_op ("./=", EDIV_EQ); } |
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1035 ".\\=" { return curr_lexer->handle_incompatible_op (".\\=", ELEFTDIV_EQ); } |
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1036 "^=" { return curr_lexer->handle_incompatible_op ("^=", POW_EQ); } |
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1037 "**=" { return curr_lexer->handle_incompatible_op ("^=", POW_EQ); } |
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1038 ".^=" { return curr_lexer->handle_incompatible_op (".^=", EPOW_EQ); } |
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1039 ".**=" { return curr_lexer->handle_incompatible_op (".^=", EPOW_EQ); } |
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1040 "&=" { return curr_lexer->handle_incompatible_op ("&=", AND_EQ); } |
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1041 "|=" { return curr_lexer->handle_incompatible_op ("|=", OR_EQ); } |
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1042 "<<=" { return curr_lexer->handle_incompatible_op ("<<=", LSHIFT_EQ); } |
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1043 ">>=" { return curr_lexer->handle_incompatible_op (">>=", RSHIFT_EQ); } |
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1044 |
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1045 "{" { |
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1046 curr_lexer->lexer_debug ("{"); |
8535 | 1047 |
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1048 bool unput_comma = false; |
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1049 |
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1050 if (curr_lexer->whitespace_is_significant () |
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1051 && curr_lexer->space_follows_previous_token ()) |
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1052 { |
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1053 int tok = curr_lexer->previous_token_value (); |
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1054 |
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1055 if (! (tok == '[' || tok == '{' |
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1056 || curr_lexer->previous_token_is_binop ())) |
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1057 unput_comma = true; |
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1058 } |
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1059 |
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1060 if (unput_comma) |
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1061 { |
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1062 yyless (0); |
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1063 curr_lexer->xunput (','); |
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1064 } |
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1065 else |
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1066 { |
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1067 curr_lexer->nesting_level.brace (); |
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1068 |
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1069 curr_lexer->looking_at_object_index.push_front |
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1070 (curr_lexer->looking_for_object_index); |
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1071 |
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1072 curr_lexer->current_input_column += yyleng; |
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1073 curr_lexer->looking_for_object_index = false; |
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1074 curr_lexer->at_beginning_of_statement = false; |
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1075 |
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1076 curr_lexer->decrement_promptflag (); |
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1077 |
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1078 curr_lexer->braceflag++; |
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1079 |
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1080 curr_lexer->push_start_state (MATRIX_START); |
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1081 |
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1082 return curr_lexer->count_token ('{'); |
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1083 } |
3351 | 1084 } |
1085 | |
1086 "}" { | |
16229
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1087 curr_lexer->lexer_debug ("}"); |
8535 | 1088 |
16110
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1089 curr_lexer->looking_at_object_index.pop_front (); |
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1090 |
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1091 curr_lexer->looking_for_object_index = true; |
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1092 curr_lexer->at_beginning_of_statement = false; |
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1093 |
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1094 curr_lexer->nesting_level.remove (); |
3351 | 1095 |
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1096 return curr_lexer->handle_token ('}'); |
3351 | 1097 } |
1098 | |
968 | 1099 %{ |
2066 | 1100 // Unrecognized input is a lexical error. |
968 | 1101 %} |
1 | 1102 |
2042 | 1103 . { |
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1104 curr_lexer->lexer_debug ("."); |
8535 | 1105 |
16125
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1106 curr_lexer->xunput (yytext[0]); |
16113
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1107 |
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1108 int c = curr_lexer->text_yyinput (); |
4248 | 1109 |
1110 if (c != EOF) | |
4240 | 1111 { |
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1112 curr_lexer->current_input_column++; |
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1113 |
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1114 error ("invalid character '%s' (ASCII %d) near line %d, column %d", |
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1115 undo_string_escape (static_cast<char> (c)), c, |
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1116 curr_lexer->input_line_number, curr_lexer->current_input_column); |
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1117 |
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1118 return LEXICAL_ERROR; |
4240 | 1119 } |
1120 else | |
16164
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1121 return curr_lexer->handle_end_of_input (); |
2066 | 1122 } |
1 | 1123 |
1124 %% | |
1125 | |
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1126 static void |
8535 | 1127 display_character (char c) |
1128 { | |
1129 if (isgraph (c)) | |
1130 std::cerr << c; | |
1131 else | |
1132 switch (c) | |
1133 { | |
1134 case 0: | |
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1135 std::cerr << "NUL"; |
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1136 break; |
8535 | 1137 |
1138 case 1: | |
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1139 std::cerr << "SOH"; |
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1140 break; |
8535 | 1141 |
1142 case 2: | |
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1143 std::cerr << "STX"; |
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1144 break; |
8535 | 1145 |
1146 case 3: | |
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1147 std::cerr << "ETX"; |
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1148 break; |
8535 | 1149 |
1150 case 4: | |
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1151 std::cerr << "EOT"; |
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1152 break; |
8535 | 1153 |
1154 case 5: | |
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1155 std::cerr << "ENQ"; |
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1156 break; |
8535 | 1157 |
1158 case 6: | |
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1159 std::cerr << "ACK"; |
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1160 break; |
8535 | 1161 |
1162 case 7: | |
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1163 std::cerr << "\\a"; |
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1164 break; |
8535 | 1165 |
1166 case 8: | |
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1167 std::cerr << "\\b"; |
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1168 break; |
8535 | 1169 |
1170 case 9: | |
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1171 std::cerr << "\\t"; |
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1172 break; |
8535 | 1173 |
1174 case 10: | |
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1175 std::cerr << "\\n"; |
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1176 break; |
8535 | 1177 |
1178 case 11: | |
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1179 std::cerr << "\\v"; |
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1180 break; |
8535 | 1181 |
1182 case 12: | |
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1183 std::cerr << "\\f"; |
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1184 break; |
8535 | 1185 |
1186 case 13: | |
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1187 std::cerr << "\\r"; |
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1188 break; |
8535 | 1189 |
1190 case 14: | |
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1191 std::cerr << "SO"; |
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1192 break; |
8535 | 1193 |
1194 case 15: | |
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1195 std::cerr << "SI"; |
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1196 break; |
8535 | 1197 |
1198 case 16: | |
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1199 std::cerr << "DLE"; |
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1200 break; |
8535 | 1201 |
1202 case 17: | |
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1203 std::cerr << "DC1"; |
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1204 break; |
8535 | 1205 |
1206 case 18: | |
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1207 std::cerr << "DC2"; |
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1208 break; |
8535 | 1209 |
1210 case 19: | |
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1211 std::cerr << "DC3"; |
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1212 break; |
8535 | 1213 |
1214 case 20: | |
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1215 std::cerr << "DC4"; |
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1216 break; |
8535 | 1217 |
1218 case 21: | |
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1219 std::cerr << "NAK"; |
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1220 break; |
8535 | 1221 |
1222 case 22: | |
10315
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1223 std::cerr << "SYN"; |
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1224 break; |
8535 | 1225 |
1226 case 23: | |
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1227 std::cerr << "ETB"; |
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1228 break; |
8535 | 1229 |
1230 case 24: | |
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1231 std::cerr << "CAN"; |
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1232 break; |
8535 | 1233 |
1234 case 25: | |
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changeset
|
1235 std::cerr << "EM"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1236 break; |
8535 | 1237 |
1238 case 26: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1239 std::cerr << "SUB"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1240 break; |
8535 | 1241 |
1242 case 27: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1243 std::cerr << "ESC"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1244 break; |
8535 | 1245 |
1246 case 28: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1247 std::cerr << "FS"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1248 break; |
8535 | 1249 |
1250 case 29: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1251 std::cerr << "GS"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1252 break; |
8535 | 1253 |
1254 case 30: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1255 std::cerr << "RS"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1256 break; |
8535 | 1257 |
1258 case 31: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1259 std::cerr << "US"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1260 break; |
8535 | 1261 |
1262 case 32: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1263 std::cerr << "SPACE"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1264 break; |
8535 | 1265 |
1266 case 127: | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1267 std::cerr << "DEL"; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1268 break; |
8535 | 1269 } |
1270 } | |
8745
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
parents:
8701
diff
changeset
|
1271 |
13973
2c664266e9d0
clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents:
13260
diff
changeset
|
1272 void |
2c664266e9d0
clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents:
13260
diff
changeset
|
1273 cleanup_parser (void) |
2c664266e9d0
clean up parser memory on exit
John W. Eaton <jwe@octave.org>
parents:
13260
diff
changeset
|
1274 { |
1 | 1275 } |
1276 | |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1277 // 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
|
1278 // string. |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1279 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1280 static bool |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1281 match_any (char c, const char *s) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1282 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1283 char tmp; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1284 while ((tmp = *s++) != '\0') |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1285 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1286 if (c == tmp) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1287 return true; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1288 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1289 return false; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1290 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1291 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1292 bool |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1293 is_keyword (const std::string& s) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1294 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1295 // Parsing function names like "set.property_name" inside |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1296 // 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
|
1297 // "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
|
1298 // 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
|
1299 // 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
|
1300 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1301 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
|
1302 && ! (s == "set" || s == "get")); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1303 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1304 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1305 DEFUN (iskeyword, args, , |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1306 "-*- texinfo -*-\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1307 @deftypefn {Built-in Function} {} iskeyword ()\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1308 @deftypefnx {Built-in Function} {} iskeyword (@var{name})\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1309 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
|
1310 is omitted, return a list of keywords.\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1311 @seealso{isvarname, exist}\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1312 @end deftypefn") |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1313 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1314 octave_value retval; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1315 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1316 int argc = args.length () + 1; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1317 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1318 string_vector argv = args.make_argv ("iskeyword"); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1319 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1320 if (error_state) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1321 return retval; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1322 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1323 if (argc == 1) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1324 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1325 // 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
|
1326 // is_keyword function for additional details. |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1327 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1328 string_vector lst (TOTAL_KEYWORDS); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1329 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1330 int j = 0; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1331 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1332 for (int i = 0; i < TOTAL_KEYWORDS; i++) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1333 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1334 std::string tmp = wordlist[i].name; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1335 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1336 if (! (tmp == "set" || tmp == "get")) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1337 lst[j++] = tmp; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1338 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1339 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1340 lst.resize (j); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1341 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1342 retval = Cell (lst.sort ()); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1343 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1344 else if (argc == 2) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1345 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1346 retval = is_keyword (argv[1]); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1347 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1348 else |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1349 print_usage (); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1350 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1351 return retval; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1352 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1353 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1354 /* |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1355 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1356 %!assert (iskeyword ("for")) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1357 %!assert (iskeyword ("fort"), false) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1358 %!assert (iskeyword ("fft"), false) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1359 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1360 */ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1361 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1362 // Used to delete trailing white space from tokens. |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1363 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1364 static std::string |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1365 strip_trailing_whitespace (char *s) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1366 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1367 std::string retval = s; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1368 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1369 size_t pos = retval.find_first_of (" \t"); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1370 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1371 if (pos != std::string::npos) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1372 retval.resize (pos); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1373 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1374 return retval; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1375 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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|
1376 |
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* lex.ll: Reorder function definitions.
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|
1377 DEFUN (__display_tokens__, args, nargout, |
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* lex.ll: Reorder function definitions.
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|
1378 "-*- texinfo -*-\n\ |
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* lex.ll: Reorder function definitions.
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|
1379 @deftypefn {Built-in Function} {} __display_tokens__ ()\n\ |
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* lex.ll: Reorder function definitions.
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|
1380 Query or set the internal variable that determines whether Octave's\n\ |
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* lex.ll: Reorder function definitions.
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16113
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|
1381 lexer displays tokens as they are read.\n\ |
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* lex.ll: Reorder function definitions.
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|
1382 @end deftypefn") |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
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|
1383 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
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|
1384 return SET_INTERNAL_VARIABLE (display_tokens); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
diff
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|
1385 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
diff
changeset
|
1386 |
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* lex.ll: Reorder function definitions.
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parents:
16113
diff
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|
1387 DEFUN (__token_count__, , , |
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* lex.ll: Reorder function definitions.
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parents:
16113
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|
1388 "-*- texinfo -*-\n\ |
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* lex.ll: Reorder function definitions.
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16113
diff
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|
1389 @deftypefn {Built-in Function} {} __token_count__ ()\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
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|
1390 Number of language tokens processed since Octave startup.\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
diff
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|
1391 @end deftypefn") |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
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|
1392 { |
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* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1393 return octave_value (Vtoken_count); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1394 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1395 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1396 DEFUN (__lexer_debug_flag__, args, nargout, |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1397 "-*- texinfo -*-\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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16113
diff
changeset
|
1398 @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>
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16113
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|
1399 Undocumented internal function.\n\ |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
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|
1400 @end deftypefn") |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
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|
1401 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1402 octave_value retval; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1403 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1404 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
|
1405 "__lexer_debug_flag__"); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1406 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1407 return retval; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1408 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1409 |
16117
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
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|
1410 class |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1411 flex_stream_reader : public stream_reader |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1412 { |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1413 public: |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1414 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
|
1415 : 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
|
1416 { } |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1417 |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1418 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
|
1419 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
|
1420 |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1421 private: |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1422 |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1423 // No copying! |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1424 |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1425 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
|
1426 |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1427 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
|
1428 |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1429 octave_lexer *lexer; |
16117
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1430 |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1431 char *buf; |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1432 }; |
771186909285
maint: move class definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16116
diff
changeset
|
1433 |
16193
d7392bf42fd1
use inheritance to simplify initialization in octave_lexer constructor
John W. Eaton <jwe@octave.org>
parents:
16183
diff
changeset
|
1434 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
|
1435 { |
16230
4bf907906134
use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents:
16229
diff
changeset
|
1436 tokens.clear (); |
16194
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1437 } |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1438 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1439 void |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1440 lexical_feedback::init (void) |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1441 { |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1442 // 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
|
1443 // index. |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1444 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
|
1445 } |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1446 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1447 void |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1448 lexical_feedback::reset (void) |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1449 { |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1450 end_of_input = false; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1451 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
|
1452 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
|
1453 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
|
1454 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
|
1455 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
|
1456 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
|
1457 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
|
1458 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
|
1459 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
|
1460 parsing_class_method = false; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1461 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
|
1462 parsing_classdef = false; |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1463 force_script = false; |
16199
810a71122c25
move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16195
diff
changeset
|
1464 reading_fcn_file = false; |
810a71122c25
move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16195
diff
changeset
|
1465 reading_script_file = false; |
810a71122c25
move more global variables to octave_lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16195
diff
changeset
|
1466 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
|
1467 input_line_number = 1; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1468 current_input_column = 1; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1469 bracketflag = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1470 braceflag = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1471 looping = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1472 defining_func = 0; |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1473 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
|
1474 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
|
1475 token_count = 0; |
16207
0467d68ca891
move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16203
diff
changeset
|
1476 current_input_line = ""; |
16228
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
1477 comment_text = ""; |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1478 help_text = ""; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1479 fcn_file_name = ""; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1480 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
|
1481 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
|
1482 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
|
1483 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1484 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
|
1485 parsed_function_name.pop (); |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1486 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1487 pending_local_variables.clear (); |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1488 |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1489 nesting_level.reset (); |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1490 |
16230
4bf907906134
use a queue to hold tokens in the lexer
John W. Eaton <jwe@octave.org>
parents:
16229
diff
changeset
|
1491 tokens.clear (); |
16194
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1492 } |
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1493 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1494 int |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1495 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
|
1496 { |
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diff
changeset
|
1497 const token *tok = tokens.front (); |
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|
1498 return tok ? tok->token_value () : 0; |
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|
1499 } |
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|
1500 |
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changeset
|
1501 bool |
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changeset
|
1502 lexical_feedback::previous_token_value_is (int tok_val) const |
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changeset
|
1503 { |
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changeset
|
1504 const token *tok = tokens.front (); |
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parents:
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diff
changeset
|
1505 return tok ? tok->token_value_is (tok_val) : false; |
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changeset
|
1506 } |
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changeset
|
1507 |
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changeset
|
1508 void |
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diff
changeset
|
1509 lexical_feedback::mark_previous_token_trailing_space (void) |
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|
1510 { |
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changeset
|
1511 token *tok = tokens.front (); |
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diff
changeset
|
1512 if (tok && ! previous_token_value_is ('\n')) |
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diff
changeset
|
1513 tok->mark_trailing_space (); |
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diff
changeset
|
1514 } |
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diff
changeset
|
1515 |
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diff
changeset
|
1516 bool |
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diff
changeset
|
1517 lexical_feedback::space_follows_previous_token (void) const |
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diff
changeset
|
1518 { |
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diff
changeset
|
1519 const token *tok = tokens.front (); |
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diff
changeset
|
1520 return tok ? tok->space_follows_token () : false; |
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changeset
|
1521 } |
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diff
changeset
|
1522 |
16257
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diff
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|
1523 bool |
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diff
changeset
|
1524 lexical_feedback::previous_token_is_binop (void) const |
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diff
changeset
|
1525 { |
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diff
changeset
|
1526 int tok = previous_token_value (); |
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changeset
|
1527 |
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diff
changeset
|
1528 return (tok == '+' || tok == '-' || tok == '@' |
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parents:
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diff
changeset
|
1529 || tok == ',' || tok == ';' || tok == '*' || tok == '/' |
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parents:
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diff
changeset
|
1530 || tok == ':' || tok == '=' || tok == ADD_EQ |
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parents:
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diff
changeset
|
1531 || tok == AND_EQ || tok == DIV_EQ || tok == EDIV |
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parents:
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diff
changeset
|
1532 || tok == EDIV_EQ || tok == ELEFTDIV || tok == ELEFTDIV_EQ |
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parents:
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diff
changeset
|
1533 || tok == EMINUS || tok == EMUL || tok == EMUL_EQ |
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parents:
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diff
changeset
|
1534 || tok == EPOW || tok == EPOW_EQ || tok == EXPR_AND |
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parents:
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diff
changeset
|
1535 || tok == EXPR_AND_AND || tok == EXPR_EQ || tok == EXPR_GE |
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parents:
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diff
changeset
|
1536 || tok == EXPR_GT || tok == EXPR_LE || tok == EXPR_LT |
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parents:
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diff
changeset
|
1537 || tok == EXPR_NE || tok == EXPR_NOT || tok == EXPR_OR |
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parents:
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diff
changeset
|
1538 || tok == EXPR_OR_OR || tok == LEFTDIV || tok == LEFTDIV_EQ |
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parents:
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diff
changeset
|
1539 || tok == LSHIFT || tok == LSHIFT_EQ || tok == MUL_EQ |
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parents:
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diff
changeset
|
1540 || tok == OR_EQ || tok == POW || tok == POW_EQ |
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parents:
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diff
changeset
|
1541 || tok == RSHIFT || tok == RSHIFT_EQ || tok == SUB_EQ); |
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parents:
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diff
changeset
|
1542 } |
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diff
changeset
|
1543 |
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diff
changeset
|
1544 bool |
16267
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parents:
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diff
changeset
|
1545 lexical_feedback::previous_token_is_keyword (void) const |
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parents:
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changeset
|
1546 { |
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parents:
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diff
changeset
|
1547 const token *tok = tokens.front (); |
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changeset
|
1548 return tok ? tok->is_keyword () : false; |
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parents:
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changeset
|
1549 } |
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parents:
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changeset
|
1550 |
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parents:
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diff
changeset
|
1551 bool |
16257
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parents:
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changeset
|
1552 lexical_feedback::previous_token_may_be_command (void) const |
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parents:
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diff
changeset
|
1553 { |
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parents:
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diff
changeset
|
1554 const token *tok = tokens.front (); |
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diff
changeset
|
1555 return tok ? tok->may_be_command () : false; |
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parents:
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diff
changeset
|
1556 } |
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parents:
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diff
changeset
|
1557 |
16228
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parents:
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changeset
|
1558 static bool |
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changeset
|
1559 looks_like_copyright (const std::string& s) |
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changeset
|
1560 { |
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changeset
|
1561 bool retval = false; |
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changeset
|
1562 |
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parents:
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changeset
|
1563 if (! s.empty ()) |
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parents:
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diff
changeset
|
1564 { |
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diff
changeset
|
1565 size_t offset = s.find_first_not_of (" \t"); |
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changeset
|
1566 |
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changeset
|
1567 retval = (s.substr (offset, 9) == "Copyright" || s.substr (offset, 6) == "Author"); |
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changeset
|
1568 } |
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parents:
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changeset
|
1569 |
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changeset
|
1570 return retval; |
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parents:
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changeset
|
1571 } |
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parents:
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changeset
|
1572 |
16194
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parents:
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changeset
|
1573 void |
16195
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parents:
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changeset
|
1574 octave_lexer::input_buffer::fill (const std::string& input, bool eof_arg) |
16183
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changeset
|
1575 { |
16195
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parents:
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changeset
|
1576 buffer = input; |
16183
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changeset
|
1577 chars_left = buffer.length (); |
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changeset
|
1578 pos = buffer.c_str (); |
16195
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changeset
|
1579 eof = eof_arg; |
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changeset
|
1580 } |
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changeset
|
1581 |
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changeset
|
1582 int |
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changeset
|
1583 octave_lexer::input_buffer::copy_chunk (char *buf, size_t max_size) |
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changeset
|
1584 { |
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changeset
|
1585 static const char * const eol = "\n"; |
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changeset
|
1586 |
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changeset
|
1587 size_t len = max_size > chars_left ? chars_left : max_size; |
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changeset
|
1588 assert (len > 0); |
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changeset
|
1589 |
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changeset
|
1590 memcpy (buf, pos, len); |
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changeset
|
1591 |
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changeset
|
1592 chars_left -= len; |
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changeset
|
1593 pos += len; |
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changeset
|
1594 |
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changeset
|
1595 // Make sure input ends with a new line character. |
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changeset
|
1596 if (chars_left == 0 && buf[len-1] != '\n') |
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changeset
|
1597 { |
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changeset
|
1598 if (len < max_size) |
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changeset
|
1599 { |
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changeset
|
1600 // There is enough room to plug the newline character in |
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changeset
|
1601 // the buffer. |
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changeset
|
1602 buf[len++] = '\n'; |
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changeset
|
1603 } |
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changeset
|
1604 else |
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changeset
|
1605 { |
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changeset
|
1606 // There isn't enough room to plug the newline character |
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changeset
|
1607 // in the buffer so arrange to have it returned on the next |
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changeset
|
1608 // call to octave_lexer::read. |
16183
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changeset
|
1609 pos = eol; |
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changeset
|
1610 chars_left = 1; |
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changeset
|
1611 } |
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diff
changeset
|
1612 } |
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changeset
|
1613 |
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changeset
|
1614 return len; |
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diff
changeset
|
1615 } |
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changeset
|
1616 |
16158
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parents:
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diff
changeset
|
1617 octave_lexer::~octave_lexer (void) |
16114
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parents:
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changeset
|
1618 { |
16149
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16148
diff
changeset
|
1619 yylex_destroy (scanner); |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1620 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1621 |
16123
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1622 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1623 octave_lexer::init (void) |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1624 { |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1625 yylex_init (&scanner); |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1626 |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1627 // 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
|
1628 // flex-generated lexer. |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1629 yyset_extra (this, scanner); |
16224
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
1630 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
1631 clear_start_state (); |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1632 } |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1633 |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1634 // 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
|
1635 // 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
|
1636 // (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
|
1637 // 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
|
1638 // OCTAVE_YYG macro. |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1639 |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1640 #define OCTAVE_YYG \ |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1641 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
|
1642 |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1643 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1644 octave_lexer::reset (void) |
16123
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1645 { |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1646 // 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
|
1647 clear_start_state (); |
16123
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1648 |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1649 parser_symtab_context.clear (); |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1650 |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1651 // 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
|
1652 promptflag (1); |
16123
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1653 |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1654 // 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
|
1655 // input. |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1656 |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1657 if (! quitting_gracefully |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1658 && (interactive || forced_interactive) |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1659 && ! (reading_fcn_file |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1660 || reading_classdef_file |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1661 || reading_script_file |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1662 || input_from_eval_string ())) |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1663 yyrestart (stdin, scanner); |
16123
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1664 |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
1665 input_reader.reset (); |
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
1666 |
16194
b7ca669af528
reset lexical_feedback state before starting a new parse
John W. Eaton <jwe@octave.org>
parents:
16193
diff
changeset
|
1667 lexical_feedback::reset (); |
16123
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1668 } |
a484e39d1f22
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16122
diff
changeset
|
1669 |
16124
3be725cd195b
move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16123
diff
changeset
|
1670 void |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1671 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
|
1672 { |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1673 reading_script_file = true; |
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
1674 |
16224
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
1675 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
|
1676 } |
3be725cd195b
move more lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16123
diff
changeset
|
1677 |
16121
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1678 int |
16195
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16194
diff
changeset
|
1679 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
|
1680 { |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1681 int status = 0; |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1682 |
16183
359d56094efa
handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents:
16166
diff
changeset
|
1683 if (input_buf.empty ()) |
16195
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16194
diff
changeset
|
1684 { |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16194
diff
changeset
|
1685 bool eof = false; |
16207
0467d68ca891
move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16203
diff
changeset
|
1686 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
|
1687 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
|
1688 } |
16183
359d56094efa
handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents:
16166
diff
changeset
|
1689 |
359d56094efa
handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents:
16166
diff
changeset
|
1690 if (! input_buf.empty ()) |
359d56094efa
handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents:
16166
diff
changeset
|
1691 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
|
1692 else |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1693 { |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1694 status = YY_NULL; |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1695 |
16183
359d56094efa
handle lexer input buffering with class
John W. Eaton <jwe@octave.org>
parents:
16166
diff
changeset
|
1696 if (! input_buf.at_eof ()) |
16195
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16194
diff
changeset
|
1697 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
|
1698 } |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1699 |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1700 return status; |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1701 } |
bdf365c5c9bf
maint: move function definition in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16120
diff
changeset
|
1702 |
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
|
1703 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
|
1704 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
|
1705 { |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
1706 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
|
1707 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1708 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
|
1709 { |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1710 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
|
1711 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1712 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
|
1713 && ! 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
|
1714 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
|
1715 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
|
1716 } |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1717 |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
1718 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
|
1719 } |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
changeset
|
1720 |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
1721 char * |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1722 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
|
1723 { |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1724 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
|
1725 } |
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
1726 |
16130
421dea028bbf
localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16129
diff
changeset
|
1727 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1728 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
|
1729 { |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1730 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
|
1731 } |
421dea028bbf
localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16129
diff
changeset
|
1732 |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1733 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1734 octave_lexer::text_yyinput (void) |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1735 { |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
1736 int c = yyinput (scanner); |
16114
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* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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16113
diff
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|
1737 |
73a21ade0b6b
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John W. Eaton <jwe@octave.org>
parents:
16113
diff
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|
1738 if (lexer_debug_flag) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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diff
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|
1739 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
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|
1740 std::cerr << "I: "; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1741 display_character (c); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
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|
1742 std::cerr << std::endl; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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16113
diff
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|
1743 } |
73a21ade0b6b
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John W. Eaton <jwe@octave.org>
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diff
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|
1744 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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16113
diff
changeset
|
1745 // Convert CRLF into just LF and single CR into LF. |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
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|
1746 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1747 if (c == '\r') |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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16113
diff
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|
1748 { |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
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|
1749 c = yyinput (scanner); |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
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|
1750 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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changeset
|
1751 if (lexer_debug_flag) |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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diff
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|
1752 { |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
parents:
16113
diff
changeset
|
1753 std::cerr << "I: "; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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16113
diff
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|
1754 display_character (c); |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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|
1755 std::cerr << std::endl; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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16113
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|
1756 } |
73a21ade0b6b
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|
1757 |
73a21ade0b6b
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|
1758 if (c != '\n') |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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|
1759 { |
16125
96a58f197f93
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John W. Eaton <jwe@octave.org>
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16124
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|
1760 xunput (c); |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
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|
1761 c = '\n'; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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|
1762 } |
73a21ade0b6b
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|
1763 } |
73a21ade0b6b
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|
1764 |
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* lex.ll: Reorder function definitions.
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|
1765 if (c == '\n') |
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* lex.ll: Reorder function definitions.
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|
1766 input_line_number++; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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|
1767 |
73a21ade0b6b
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John W. Eaton <jwe@octave.org>
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diff
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|
1768 return c; |
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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|
1769 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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16113
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|
1770 |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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|
1771 void |
16158
7eb614760ddb
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John W. Eaton <jwe@octave.org>
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diff
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|
1772 octave_lexer::xunput (char c, char *buf) |
16114
73a21ade0b6b
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John W. Eaton <jwe@octave.org>
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|
1773 { |
16164
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
diff
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|
1774 if (c != EOF) |
16114
73a21ade0b6b
* lex.ll: Reorder function definitions.
John W. Eaton <jwe@octave.org>
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|
1775 { |
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
|
1776 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:
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diff
changeset
|
1777 { |
c5bfdc4c0963
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John W. Eaton <jwe@octave.org>
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16158
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|
1778 std::cerr << "U: "; |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
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16158
diff
changeset
|
1779 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
|
1780 std::cerr << std::endl; |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
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16158
diff
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|
1781 } |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
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16158
diff
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|
1782 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
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16158
diff
changeset
|
1783 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
|
1784 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
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|
1785 |
c5bfdc4c0963
move end_of_input flag from octve_parser class to octave_lexer class
John W. Eaton <jwe@octave.org>
parents:
16158
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|
1786 yyunput (c, buf, scanner); |
16114
73a21ade0b6b
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John W. Eaton <jwe@octave.org>
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16113
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|
1787 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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parents:
16113
diff
changeset
|
1788 } |
73a21ade0b6b
* lex.ll: Reorder function definitions.
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16113
diff
changeset
|
1789 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
1790 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
1791 octave_lexer::xunput (char c) |
16125
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John W. Eaton <jwe@octave.org>
parents:
16124
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|
1792 { |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
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|
1793 char *yytxt = flex_yytext (); |
16149
49dfba4fd3c5
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John W. Eaton <jwe@octave.org>
parents:
16148
diff
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|
1794 |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
1795 xunput (c, yytxt); |
16125
96a58f197f93
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John W. Eaton <jwe@octave.org>
parents:
16124
diff
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|
1796 } |
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
1797 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
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|
1798 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
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|
1799 octave_lexer::inside_any_object_index (void) |
8745
6dc61981d18b
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John W. Eaton <jwe@octave.org>
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diff
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|
1800 { |
6dc61981d18b
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diff
changeset
|
1801 bool retval = false; |
6dc61981d18b
better handling of object indexing in lexer
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diff
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|
1802 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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16111
diff
changeset
|
1803 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>
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16111
diff
changeset
|
1804 i != looking_at_object_index.end (); i++) |
8745
6dc61981d18b
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John W. Eaton <jwe@octave.org>
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8701
diff
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|
1805 { |
6dc61981d18b
better handling of object indexing in lexer
John W. Eaton <jwe@octave.org>
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|
1806 if (*i) |
10315
57a59eae83cc
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|
1807 { |
57a59eae83cc
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|
1808 retval = true; |
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|
1809 break; |
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|
1810 } |
8745
6dc61981d18b
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John W. Eaton <jwe@octave.org>
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diff
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|
1811 } |
6dc61981d18b
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diff
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|
1812 |
6dc61981d18b
better handling of object indexing in lexer
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parents:
8701
diff
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|
1813 return retval; |
6dc61981d18b
better handling of object indexing in lexer
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parents:
8701
diff
changeset
|
1814 } |
6dc61981d18b
better handling of object indexing in lexer
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changeset
|
1815 |
4238 | 1816 // Handle keywords. Return -1 if the keyword should be ignored. |
767 | 1817 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
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changeset
|
1818 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
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|
1819 octave_lexer::is_keyword_token (const std::string& s) |
1 | 1820 { |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
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|
1821 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
|
1822 int c = current_input_column; |
3805 | 1823 |
1823 | 1824 int len = s.length (); |
922 | 1825 |
5088 | 1826 const octave_kw *kw = octave_kw_hash::in_word_set (s.c_str (), len); |
191 | 1827 |
1497 | 1828 if (kw) |
143 | 1829 { |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
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16125
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changeset
|
1830 token *tok_val = 0; |
1497 | 1831 |
1832 switch (kw->kw_id) | |
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|
1833 { |
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|
1834 case break_kw: |
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|
1835 case catch_kw: |
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|
1836 case continue_kw: |
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|
1837 case else_kw: |
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|
1838 case otherwise_kw: |
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|
1839 case return_kw: |
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|
1840 case unwind_protect_cleanup_kw: |
16113
7c5e5e97a3bc
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|
1841 at_beginning_of_statement = true; |
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|
1842 break; |
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|
1843 |
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|
1844 case static_kw: |
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diff
changeset
|
1845 if ((reading_fcn_file || reading_script_file |
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diff
changeset
|
1846 || reading_classdef_file) |
16203
127cccb037bf
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16199
diff
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|
1847 && ! fcn_file_full_name.empty ()) |
14294
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|
1848 warning_with_id ("Octave:deprecated-keyword", |
15468
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15467
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changeset
|
1849 "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
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changeset
|
1850 input_line_number, |
16203
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16199
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changeset
|
1851 fcn_file_full_name.c_str ()); |
14294
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|
1852 else |
9e3983c8963c
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changeset
|
1853 warning_with_id ("Octave:deprecated-keyword", |
15468
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|
1854 "the 'static' keyword is obsolete and will be removed from a future version of Octave; please use 'persistent' instead; near line %d", |
16113
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|
1855 input_line_number); |
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changeset
|
1856 // fall through ... |
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|
1857 |
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changeset
|
1858 case persistent_kw: |
16263
9acb86e6ac90
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16261
diff
changeset
|
1859 case global_kw: |
9acb86e6ac90
4/10 commits reworking the lexer
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16261
diff
changeset
|
1860 looking_at_decl_list = true; |
14294
9e3983c8963c
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diff
changeset
|
1861 break; |
9e3983c8963c
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|
1862 |
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|
1863 case case_kw: |
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|
1864 case elseif_kw: |
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|
1865 case until_kw: |
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|
1866 break; |
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diff
changeset
|
1867 |
57a59eae83cc
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diff
changeset
|
1868 case end_kw: |
14645
cbc00b587f36
also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents:
14642
diff
changeset
|
1869 if (inside_any_object_index () |
cbc00b587f36
also allow "end" indexing in classdef files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1870 || (! reading_classdef_file |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1871 && (defining_func |
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1872 && ! (looking_at_return_list |
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1873 || parsed_function_name.top ())))) |
10315
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parents:
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diff
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|
1874 return 0; |
57a59eae83cc
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diff
changeset
|
1875 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1876 tok_val = new token (end_kw, token::simple_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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diff
changeset
|
1877 at_beginning_of_statement = true; |
10315
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diff
changeset
|
1878 break; |
57a59eae83cc
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parents:
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diff
changeset
|
1879 |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1880 case end_try_catch_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1881 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:
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diff
changeset
|
1882 at_beginning_of_statement = true; |
10315
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1883 break; |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1884 |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1885 case end_unwind_protect_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1886 tok_val = new token (end_unwind_protect_kw, |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1887 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
|
1888 at_beginning_of_statement = true; |
10315
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diff
changeset
|
1889 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1890 |
57a59eae83cc
untabify src C++ source files
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parents:
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diff
changeset
|
1891 case endfor_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1892 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>
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diff
changeset
|
1893 at_beginning_of_statement = true; |
10315
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diff
changeset
|
1894 break; |
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untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1895 |
57a59eae83cc
untabify src C++ source files
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parents:
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diff
changeset
|
1896 case endfunction_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1897 tok_val = new token (endfunction_kw, token::function_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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diff
changeset
|
1898 at_beginning_of_statement = true; |
10315
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changeset
|
1899 break; |
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diff
changeset
|
1900 |
57a59eae83cc
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parents:
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diff
changeset
|
1901 case endif_kw: |
16255
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store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1902 tok_val = new token (endif_kw, token::if_end, l, c); |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1903 at_beginning_of_statement = true; |
10315
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diff
changeset
|
1904 break; |
57a59eae83cc
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diff
changeset
|
1905 |
13246 | 1906 case endparfor_kw: |
16255
12bf6a3f8c45
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John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1907 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:
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diff
changeset
|
1908 at_beginning_of_statement = true; |
13246 | 1909 break; |
1910 | |
10315
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parents:
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changeset
|
1911 case endswitch_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1912 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
|
1913 at_beginning_of_statement = true; |
10315
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John W. Eaton <jwe@octave.org>
parents:
10182
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changeset
|
1914 break; |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1915 |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1916 case endwhile_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1917 tok_val = new token (endwhile_kw, token::while_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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changeset
|
1918 at_beginning_of_statement = true; |
10315
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parents:
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diff
changeset
|
1919 break; |
11586
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strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1920 |
10315
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
1921 case endclassdef_kw: |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1922 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
|
1923 at_beginning_of_statement = true; |
10315
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1924 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1925 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1926 case endenumeration_kw: |
16267
15f55df088e7
6/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16265
diff
changeset
|
1927 tok_val = new token (endenumeration_kw, token::enumeration_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
1928 at_beginning_of_statement = true; |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1929 break; |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1930 |
10315
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diff
changeset
|
1931 case endevents_kw: |
16255
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parents:
16253
diff
changeset
|
1932 tok_val = new token (endevents_kw, token::events_end, l, c); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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changeset
|
1933 at_beginning_of_statement = true; |
10315
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changeset
|
1934 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1935 |
10315
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diff
changeset
|
1936 case endmethods_kw: |
16255
12bf6a3f8c45
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John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1937 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:
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changeset
|
1938 at_beginning_of_statement = true; |
10315
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diff
changeset
|
1939 break; |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1940 |
10315
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parents:
10182
diff
changeset
|
1941 case endproperties_kw: |
16255
12bf6a3f8c45
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John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
1942 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:
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diff
changeset
|
1943 at_beginning_of_statement = true; |
10315
57a59eae83cc
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diff
changeset
|
1944 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
1945 |
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
|
1946 |
10315
57a59eae83cc
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parents:
10182
diff
changeset
|
1947 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
|
1948 case parfor_kw: |
10315
57a59eae83cc
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parents:
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diff
changeset
|
1949 case while_kw: |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
1950 decrement_promptflag (); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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parents:
16111
diff
changeset
|
1951 looping++; |
10315
57a59eae83cc
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diff
changeset
|
1952 break; |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1953 |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1954 case do_kw: |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
1955 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
|
1956 decrement_promptflag (); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
1957 looping++; |
10315
57a59eae83cc
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diff
changeset
|
1958 break; |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1959 |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1960 case try_kw: |
57a59eae83cc
untabify src C++ source files
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parents:
10182
diff
changeset
|
1961 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
|
1962 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
|
1963 decrement_promptflag (); |
10315
57a59eae83cc
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parents:
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diff
changeset
|
1964 break; |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1965 |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
1966 case if_kw: |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1967 case switch_kw: |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
1968 decrement_promptflag (); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1969 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1970 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1971 case get_kw: |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
1972 case set_kw: |
10315
57a59eae83cc
untabify src C++ source files
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parents:
10182
diff
changeset
|
1973 // 'get' and 'set' are keywords in classdef method |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1974 // declarations. |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
1975 if (! maybe_classdef_get_set_method) |
10315
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1976 return 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1977 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1978 |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1979 case enumeration_kw: |
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1980 case events_kw: |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
1981 case methods_kw: |
13249
7861a5fd3479
accept enumeration keyword
John W. Eaton <jwe@octave.org>
parents:
13246
diff
changeset
|
1982 case properties_kw: |
10315
57a59eae83cc
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parents:
10182
diff
changeset
|
1983 // 'properties', 'methods' and 'events' are keywords for |
57a59eae83cc
untabify src C++ source files
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parents:
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diff
changeset
|
1984 // classdef blocks. |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
1985 if (! parsing_classdef) |
10315
57a59eae83cc
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John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
1986 return 0; |
57a59eae83cc
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1987 // fall through ... |
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1988 |
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1989 case classdef_kw: |
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1990 // 'classdef' is always a keyword. |
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1991 decrement_promptflag (); |
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1992 |
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1993 if (! force_script && token_count == 0 && input_from_file ()) |
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1994 { |
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1995 reading_classdef_file = true; |
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1996 reading_script_file = false; |
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1997 } |
11586
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1998 break; |
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1999 |
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2000 case function_kw: |
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2001 decrement_promptflag (); |
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2002 |
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2003 defining_func++; |
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2004 parsed_function_name.push (false); |
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2005 |
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2006 if (! force_script && token_count == 0 && input_from_file ()) |
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2007 { |
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2008 reading_fcn_file = true; |
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2009 reading_script_file = false; |
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2010 } |
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2011 |
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2012 if (! (reading_fcn_file || reading_script_file |
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2013 || reading_classdef_file)) |
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2014 input_line_number = 1; |
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2015 break; |
1497 | 2016 |
3174 | 2017 case magic_file_kw: |
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2018 { |
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2019 if ((reading_fcn_file || reading_script_file |
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2020 || reading_classdef_file) |
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2021 && ! fcn_file_full_name.empty ()) |
16267
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2022 tok_val = new token (magic_file_kw, true, |
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2023 fcn_file_full_name, l, c); |
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2024 else |
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2025 tok_val = new token (magic_file_kw, "stdin", l, c); |
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2026 } |
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2027 break; |
3174 | 2028 |
2029 case magic_line_kw: | |
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2030 tok_val = new token (magic_line_kw, static_cast<double> (l), |
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2031 "", l, c); |
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2032 break; |
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2033 |
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2034 default: |
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2035 panic_impossible (); |
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2036 } |
1497 | 2037 |
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2038 if (! tok_val) |
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2039 tok_val = new token (kw->tok, true, l, c); |
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2040 |
16148
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2041 push_token (tok_val); |
1497 | 2042 |
2043 return kw->tok; | |
143 | 2044 } |
1 | 2045 |
2046 return 0; | |
2047 } | |
2048 | |
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2049 bool |
16158
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|
2050 octave_lexer::is_variable (const std::string& name) |
2702 | 2051 { |
8001
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|
2052 return (symbol_table::is_variable (name) |
16113
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2053 || (pending_local_variables.find (name) |
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|
2054 != pending_local_variables.end ())); |
2702 | 2055 } |
2056 | |
16257
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2057 bool |
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2058 octave_lexer::whitespace_is_significant (void) |
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2059 { |
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2060 return (nesting_level.is_bracket () |
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2061 || (nesting_level.is_brace () |
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2062 && ! looking_at_object_index.front ())); |
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2063 } |
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|
2064 |
3220 | 2065 static inline bool |
2066 looks_like_hex (const char *s, int len) | |
2067 { | |
2068 return (len > 2 && s[0] == '0' && (s[1] == 'x' || s[1] == 'X')); | |
2069 } | |
2070 | |
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2071 void |
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|
2072 octave_lexer::handle_number (void) |
972 | 2073 { |
3220 | 2074 double value = 0.0; |
2075 int nread = 0; | |
2076 | |
16128
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2077 char *yytxt = flex_yytext (); |
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2078 |
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|
2079 if (looks_like_hex (yytxt, strlen (yytxt))) |
3220 | 2080 { |
2081 unsigned long ival; | |
3598 | 2082 |
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2083 nread = sscanf (yytxt, "%lx", &ival); |
3598 | 2084 |
3220 | 2085 value = static_cast<double> (ival); |
2086 } | |
2087 else | |
3598 | 2088 { |
16128
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|
2089 char *tmp = strsave (yytxt); |
3598 | 2090 |
2091 char *idx = strpbrk (tmp, "Dd"); | |
2621 | 2092 |
3598 | 2093 if (idx) |
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2094 *idx = 'e'; |
3598 | 2095 |
2096 nread = sscanf (tmp, "%lf", &value); | |
2097 | |
2098 delete [] tmp; | |
2099 } | |
972 | 2100 |
1826 | 2101 // If yytext doesn't contain a valid number, we are in deep doo doo. |
985 | 2102 |
972 | 2103 assert (nread == 1); |
2104 | |
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2105 looking_for_object_index = false; |
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2106 at_beginning_of_statement = false; |
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2107 |
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2108 push_token (new token (NUM, value, yytxt, input_line_number, |
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2109 current_input_column)); |
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2110 |
16130
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|
2111 current_input_column += flex_yyleng (); |
972 | 2112 } |
2113 | |
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2114 void |
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2115 octave_lexer::handle_continuation (void) |
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2116 { |
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2117 char *yytxt = flex_yytext (); |
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2118 int yylng = flex_yyleng (); |
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2119 |
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2120 int offset = 1; |
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2121 if (yytxt[0] == '\\') |
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2122 gripe_matlab_incompatible_continuation (); |
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2123 else |
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2124 offset = 3; |
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2125 |
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2126 bool have_space = false; |
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2127 while (offset < yylng) |
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2128 { |
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2129 char c = yytxt[offset]; |
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2130 if (c == ' ' || c == '\t') |
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|
2131 { |
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2132 have_space = true; |
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2133 offset++; |
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|
2134 } |
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2135 else |
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|
2136 break; |
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|
2137 } |
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2138 |
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2139 if (have_space) |
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2140 mark_previous_token_trailing_space (); |
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2141 |
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2142 bool have_comment = false; |
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2143 while (offset < yylng) |
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2144 { |
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2145 char c = yytxt[offset]; |
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2146 if (c == '#' || c == '%') |
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2147 { |
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|
2148 have_comment = true; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2149 offset++; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2150 } |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2151 else |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2152 break; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2153 } |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2154 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2155 if (have_comment) |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2156 { |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2157 comment_text = &yytxt[offset]; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2158 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2159 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
|
2160 } |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2161 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2162 decrement_promptflag (); |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2163 input_line_number++; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2164 current_input_column = 1; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2165 } |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2166 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2167 void |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2168 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
|
2169 bool looking_at_continuation) |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2170 { |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2171 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
|
2172 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2173 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
|
2174 && ! comment_text.empty () && ! copyright) |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2175 help_text = comment_text; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2176 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2177 if (copyright) |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2178 typ = octave_comment_elt::copyright; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2179 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2180 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
|
2181 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2182 comment_text = ""; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2183 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2184 at_beginning_of_statement = true; |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2185 |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2186 if (! looking_at_continuation) |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2187 xunput ('\n'); |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2188 } |
a89cf57ba3a5
partial cleanup of continuation handling in lexer
John W. Eaton <jwe@octave.org>
parents:
16231
diff
changeset
|
2189 |
1001 | 2190 // We have seen a backslash and need to find out if it should be |
2191 // treated as a continuation character. If so, this eats it, up to | |
2192 // and including the new line character. | |
2193 // | |
973 | 2194 // Match whitespace only, followed by a comment character or newline. |
2195 // Once a comment character is found, discard all input until newline. | |
2196 // If non-whitespace characters are found before comment | |
2197 // characters, return 0. Otherwise, return 1. | |
2198 | |
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7722
diff
changeset
|
2199 // 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
|
2200 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2201 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2202 octave_lexer::have_continuation (bool trailing_comments_ok) |
973 | 2203 { |
5765 | 2204 std::ostringstream buf; |
973 | 2205 |
3665 | 2206 std::string comment_buf; |
2207 | |
2857 | 2208 bool in_comment = false; |
3665 | 2209 bool beginning_of_comment = false; |
2210 | |
2211 int c = 0; | |
2212 | |
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
|
2213 while ((c = text_yyinput ()) != EOF) |
973 | 2214 { |
3802 | 2215 buf << static_cast<char> (c); |
973 | 2216 |
2217 switch (c) | |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2218 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2219 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2220 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2221 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2222 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2223 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2224 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2225 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2226 break; |
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 case '%': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2229 case '#': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2230 if (trailing_comments_ok) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2231 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2232 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2233 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2234 if (! beginning_of_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2235 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2236 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2237 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2238 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2239 maybe_gripe_matlab_incompatible_comment (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2240 in_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2241 beginning_of_comment = true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2242 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2243 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2244 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2245 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2246 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2247 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2248 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2249 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2250 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2251 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2252 octave_comment_buffer::append (comment_buf); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2253 } |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2254 current_input_column = 0; |
16209
e7ff32e7cf82
move global promptflag variable to octave_reader class
John W. Eaton <jwe@octave.org>
parents:
16207
diff
changeset
|
2255 decrement_promptflag (); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2256 gripe_matlab_incompatible_continuation (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2257 return true; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2258 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2259 default: |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2260 if (in_comment) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2261 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2262 comment_buf += static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2263 beginning_of_comment = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2264 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2265 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2266 goto cleanup; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2267 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2268 } |
973 | 2269 } |
2270 | |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2271 xunput (c); |
2857 | 2272 return false; |
973 | 2273 |
3096 | 2274 cleanup: |
4051 | 2275 |
5765 | 2276 std::string s = buf.str (); |
4051 | 2277 |
2278 int len = s.length (); | |
2279 while (len--) | |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2280 xunput (s[len]); |
3096 | 2281 |
2857 | 2282 return false; |
973 | 2283 } |
2284 | |
15466
d174210ce1ec
use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents:
14161
diff
changeset
|
2285 // We have seen a '.' and need to see if it is the start of a |
1001 | 2286 // continuation. If so, this eats it, up to and including the new |
2287 // line character. | |
2288 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2289 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2290 octave_lexer::have_ellipsis_continuation (bool trailing_comments_ok) |
973 | 2291 { |
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
|
2292 char c1 = text_yyinput (); |
973 | 2293 if (c1 == '.') |
2294 { | |
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
|
2295 char c2 = text_yyinput (); |
1091 | 2296 if (c2 == '.' && have_continuation (trailing_comments_ok)) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2297 return true; |
973 | 2298 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2299 { |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2300 xunput (c2); |
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2301 xunput (c1); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2302 } |
973 | 2303 } |
2304 else | |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2305 xunput (c1); |
973 | 2306 |
2857 | 2307 return false; |
973 | 2308 } |
2309 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2310 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2311 octave_lexer::handle_string (char delim) |
973 | 2312 { |
5765 | 2313 std::ostringstream buf; |
973 | 2314 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2315 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
|
2316 int bos_col = current_input_column; |
3805 | 2317 |
973 | 2318 int c; |
1031 | 2319 int escape_pending = 0; |
973 | 2320 |
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
|
2321 while ((c = text_yyinput ()) != EOF) |
973 | 2322 { |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2323 current_input_column++; |
973 | 2324 |
3105 | 2325 if (c == '\\') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2326 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2327 if (delim == '\'' || escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2328 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2329 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2330 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2331 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2332 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2333 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2334 if (have_continuation (false)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2335 escape_pending = 0; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2336 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2337 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2338 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2339 escape_pending = 1; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2340 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2341 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2342 continue; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2343 } |
973 | 2344 else if (c == '.') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2345 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2346 if (delim == '\'' || ! have_ellipsis_continuation (false)) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2347 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2348 } |
973 | 2349 else if (c == '\n') |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2350 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2351 error ("unterminated string constant"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2352 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2353 } |
973 | 2354 else if (c == delim) |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2355 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2356 if (escape_pending) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2357 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2358 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2359 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2360 c = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2361 if (c == delim) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2362 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2363 buf << static_cast<char> (c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2364 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2365 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2366 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2367 std::string s; |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2368 xunput (c); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2369 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2370 if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2371 s = buf.str (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2372 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2373 s = do_string_escapes (buf.str ()); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2374 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2375 if (delim == '"') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2376 gripe_matlab_incompatible ("\" used as string delimiter"); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2377 else if (delim == '\'') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2378 gripe_single_quote_string (); |
3400 | 2379 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2380 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
|
2381 at_beginning_of_statement = false; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2382 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2383 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
|
2384 |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2385 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
|
2386 |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2387 return tok; |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2388 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2389 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2390 } |
973 | 2391 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2392 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2393 buf << static_cast<char> (c); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2394 } |
973 | 2395 |
1031 | 2396 escape_pending = 0; |
973 | 2397 } |
2398 | |
2399 return LEXICAL_ERROR; | |
2400 } | |
2401 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2402 int |
16259
0b5ab09dfce4
2/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16257
diff
changeset
|
2403 octave_lexer::handle_close_bracket (int bracket_type) |
971 | 2404 { |
4612 | 2405 int retval = bracket_type; |
3208 | 2406 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2407 if (! nesting_level.none ()) |
971 | 2408 { |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2409 nesting_level.remove (); |
4613 | 2410 |
2411 if (bracket_type == ']') | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2412 bracketflag--; |
4613 | 2413 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
|
2414 braceflag--; |
4613 | 2415 else |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2416 panic_impossible (); |
971 | 2417 } |
2418 | |
16224
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
2419 pop_start_state (); |
1001 | 2420 |
3208 | 2421 return retval; |
971 | 2422 } |
2423 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2424 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2425 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
|
2426 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2427 std::stack<char> buf; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2428 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2429 int c = EOF; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2430 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2431 // Skip whitespace in current statement on current line |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2432 while (true) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2433 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2434 c = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2435 |
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
|
2436 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
|
2437 |
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
|
2438 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
|
2439 break; |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2440 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2441 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2442 // Restore input. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2443 while (! buf.empty ()) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2444 { |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2445 xunput (buf.top ()); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2446 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2447 buf.pop (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2448 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2449 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2450 return (isalnum (c) || match_any (c, "!\"'(-[_{~")); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2451 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2452 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2453 bool |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2454 octave_lexer::looks_like_command_arg (void) |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2455 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2456 bool retval = true; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2457 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2458 int c0 = text_yyinput (); |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2459 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2460 switch (c0) |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2461 { |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2462 // = == |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2463 case '=': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2464 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2465 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2466 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2467 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2468 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2469 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2470 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2471 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2472 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2473 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2474 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2475 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2476 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2477 else |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2478 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2479 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2480 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2481 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2482 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2483 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2484 case '(': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2485 case '{': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2486 // Indexing. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2487 retval = false; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2488 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2489 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2490 case '\n': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2491 // EOL. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2492 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2493 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2494 case '\'': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2495 case '"': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2496 // Beginning of a character string. |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2497 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2498 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2499 // + - ++ -- += -= |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2500 case '+': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2501 case '-': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2502 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2503 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2504 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2505 switch (c1) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2506 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2507 case '\n': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2508 // EOL. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2509 case '+': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2510 case '-': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2511 // Unary ops, spacing doesn't matter. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2512 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2513 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2514 case '\t': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2515 case ' ': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2516 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2517 if (next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2518 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2519 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2520 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2521 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2522 case '=': |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2523 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2524 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2525 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2526 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2527 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2528 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2529 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2530 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2531 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2532 break; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2533 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2534 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2535 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2536 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2537 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2538 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2539 case ':': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2540 case '/': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2541 case '\\': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2542 case '^': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2543 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2544 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2545 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2546 if (! match_any (c1, ",;\n") && (c1 == ' ' || c1 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2547 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2548 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2549 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2550 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2551 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2552 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2553 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2554 // .+ .- ./ .\ .^ .* .** |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2555 case '.': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2556 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2557 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2558 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2559 if (match_any (c1, "+-/\\^*")) |
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 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2562 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2563 if (c2 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2564 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2565 int c3 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2566 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2567 if (! match_any (c3, ",;\n") && (c3 == ' ' || c3 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2568 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2569 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2570 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2571 xunput (c3); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2572 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2573 else if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2574 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2575 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2576 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2577 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2578 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2579 else if (! match_any (c1, ",;\n") |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2580 && (! isdigit (c1) && c1 != ' ' && c1 != '\t' |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2581 && c1 != '.')) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2582 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2583 // Structure reference. FIXME -- is this a complete check? |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2584 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2585 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2586 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2587 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2588 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2589 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2590 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2591 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2592 // & && | || * ** |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2593 case '&': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2594 case '|': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2595 case '*': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2596 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2597 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2598 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2599 if (c1 == c0) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2600 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2601 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2602 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2603 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2604 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2605 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2606 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2607 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2608 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2609 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
|
2610 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2611 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2612 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2613 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2614 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2615 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2616 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2617 // < <= > >= |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2618 case '<': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2619 case '>': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2620 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2621 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2622 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2623 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2624 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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10182
diff
changeset
|
2625 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2626 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2627 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2628 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2629 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2630 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2631 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2632 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2633 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
|
2634 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2635 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2636 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2637 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2638 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2639 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2640 |
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 case '~': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2643 case '!': |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2644 { |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2645 int c1 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2646 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2647 // ~ and ! can be unary ops, so require following =. |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2648 if (c1 == '=') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2649 { |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2650 int c2 = text_yyinput (); |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2651 |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2652 if (! match_any (c2, ",;\n") && (c2 == ' ' || c2 == '\t') |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2653 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2654 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2655 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2656 xunput (c2); |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2657 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2658 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
|
2659 && next_token_can_follow_bin_op ()) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2660 retval = false; |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
2661 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2662 xunput (c1); |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2663 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2664 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2665 |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2666 default: |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2667 break; |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2668 } |
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
2669 |
16125
96a58f197f93
allow xunput to be called without buffer argument
John W. Eaton <jwe@octave.org>
parents:
16124
diff
changeset
|
2670 xunput (c0); |
8746
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 return retval; |
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 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2675 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2676 octave_lexer::handle_superclass_identifier (void) |
9476 | 2677 { |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2678 std::string pkg; |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
2679 char *yytxt = flex_yytext (); |
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
2680 std::string meth = strip_trailing_whitespace (yytxt); |
9476 | 2681 size_t pos = meth.find ("@"); |
2682 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
|
2683 meth = meth.substr (0, pos - 1); |
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2684 |
9476 | 2685 pos = cls.find ("."); |
2686 if (pos != std::string::npos) | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2687 { |
9476 | 2688 pkg = cls.substr (pos).substr (1); |
2689 cls = cls.substr (0, pos - 1); | |
2690 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2691 |
9476 | 2692 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
|
2693 || is_keyword_token (pkg)); |
9476 | 2694 if (kw_token) |
2695 { | |
2696 error ("method, class and package names may not be keywords"); | |
2697 return LEXICAL_ERROR; | |
2698 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2699 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2700 push_token (new token (SUPERCLASSREF, |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2701 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
|
2702 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
|
2703 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
|
2704 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
|
2705 |
16130
421dea028bbf
localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16129
diff
changeset
|
2706 current_input_column += flex_yyleng (); |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2707 |
9476 | 2708 return SUPERCLASSREF; |
2709 } | |
2710 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2711 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2712 octave_lexer::handle_meta_identifier (void) |
9476 | 2713 { |
2714 std::string pkg; | |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
2715 char *yytxt = flex_yytext (); |
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
2716 std::string cls = strip_trailing_whitespace (yytxt).substr (1); |
9476 | 2717 size_t pos = cls.find ("."); |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2718 |
9476 | 2719 if (pos != std::string::npos) |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2720 { |
9476 | 2721 pkg = cls.substr (pos).substr (1); |
2722 cls = cls.substr (0, pos - 1); | |
2723 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2724 |
9476 | 2725 int kw_token = is_keyword_token (cls) || is_keyword_token (pkg); |
2726 if (kw_token) | |
2727 { | |
2728 error ("class and package names may not be keywords"); | |
2729 return LEXICAL_ERROR; | |
2730 } | |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2731 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
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16253
diff
changeset
|
2732 push_token (new token (METAQUERY, |
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
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16253
diff
changeset
|
2733 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
|
2734 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
|
2735 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
|
2736 |
16130
421dea028bbf
localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16129
diff
changeset
|
2737 current_input_column += flex_yyleng (); |
11586
12df7854fa7c
strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
2738 |
9476 | 2739 return METAQUERY; |
2740 } | |
2741 | |
767 | 2742 // Figure out exactly what kind of token to return when we have seen |
4238 | 2743 // an identifier. Handles keywords. Return -1 if the identifier |
2744 // should be ignored. | |
767 | 2745 |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16111
diff
changeset
|
2746 int |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2747 octave_lexer::handle_identifier (void) |
146 | 2748 { |
16128
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
2749 char *yytxt = flex_yytext (); |
210039e91ad6
localize use of yytext with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16126
diff
changeset
|
2750 |
16257
db7f07b22b9b
1/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
16255
diff
changeset
|
2751 std::string tok = yytxt; |
16128
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localize use of yytext with lexical_feedback member function
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diff
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2752 |
2970 | 2753 // If we are expecting a structure element, avoid recognizing |
2754 // keywords and other special names and return STRUCT_ELT, which is | |
2755 // a string that is also a valid identifier. But first, we have to | |
2756 // decide whether to insert a comma. | |
747 | 2757 |
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
2758 if (looking_at_indirect_ref) |
1072 | 2759 { |
16255
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store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
2760 push_token (new token (STRUCT_ELT, tok, input_line_number, |
16148
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delete unnecessary X-> references inside class X member functions
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parents:
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diff
changeset
|
2761 current_input_column)); |
16113
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2762 |
7c5e5e97a3bc
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parents:
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diff
changeset
|
2763 looking_for_object_index = true; |
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move static lexer helper functions to lexical_feedback class
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parents:
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diff
changeset
|
2764 |
16130
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localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2765 current_input_column += flex_yyleng (); |
2819 | 2766 |
2970 | 2767 return STRUCT_ELT; |
1072 | 2768 } |
747 | 2769 |
8746
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parents:
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diff
changeset
|
2770 // The is_keyword_token may reset |
16113
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John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2771 // at_beginning_of_statement. For example, if it sees |
8746
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handle commands in the lexer
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parents:
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diff
changeset
|
2772 // an else token, then the next token is at the beginning of a |
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parents:
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diff
changeset
|
2773 // statement. |
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changeset
|
2774 |
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parents:
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diff
changeset
|
2775 // May set at_beginning_of_statement to true. |
4930 | 2776 int kw_token = is_keyword_token (tok); |
2777 | |
8746
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2778 // If we found a keyword token, then the beginning_of_statement flag |
5dd06f19e9be
handle commands in the lexer
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parents:
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diff
changeset
|
2779 // is already set. Otherwise, we won't be at the beginning of a |
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parents:
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diff
changeset
|
2780 // statement. |
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parents:
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diff
changeset
|
2781 |
16113
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John W. Eaton <jwe@octave.org>
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changeset
|
2782 if (looking_at_function_handle) |
4930 | 2783 { |
2784 if (kw_token) | |
10315
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parents:
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changeset
|
2785 { |
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diff
changeset
|
2786 error ("function handles may not refer to keywords"); |
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|
2787 |
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changeset
|
2788 return LEXICAL_ERROR; |
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untabify src C++ source files
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changeset
|
2789 } |
4930 | 2790 else |
10315
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|
2791 { |
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diff
changeset
|
2792 push_token (new token (FCN_HANDLE, tok, input_line_number, |
16148
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parents:
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diff
changeset
|
2793 current_input_column)); |
16113
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John W. Eaton <jwe@octave.org>
parents:
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diff
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|
2794 |
16130
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localize use of yyleng with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2795 current_input_column += flex_yyleng (); |
16113
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changeset
|
2796 looking_for_object_index = true; |
10315
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|
2797 |
16257
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|
2798 at_beginning_of_statement = false; |
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|
2799 |
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|
2800 return FCN_HANDLE; |
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changeset
|
2801 } |
4930 | 2802 } |
2803 | |
5102 | 2804 // If we have a regular keyword, return it. |
7722
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lex.l: allow tokens to be displayed when parsed
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2805 // Keywords can be followed by identifiers. |
146 | 2806 |
2807 if (kw_token) | |
2808 { | |
7722
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John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2809 if (kw_token >= 0) |
10315
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parents:
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|
2810 { |
16130
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2811 current_input_column += flex_yyleng (); |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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parents:
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changeset
|
2812 looking_for_object_index = false; |
10315
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changeset
|
2813 } |
7722
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|
2814 |
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changeset
|
2815 return kw_token; |
146 | 2816 } |
2817 | |
4234 | 2818 // Find the token in the symbol table. Beware the magic |
2819 // transformation of the end keyword... | |
2820 | |
2821 if (tok == "end") | |
11586
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parents:
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diff
changeset
|
2822 tok = "__end__"; |
146 | 2823 |
16257
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parents:
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diff
changeset
|
2824 token *tok_val = new token (NAME, &(symbol_table::insert (tok)), |
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parents:
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diff
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|
2825 input_line_number, current_input_column); |
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|
2826 |
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changeset
|
2827 if (at_beginning_of_statement |
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parents:
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diff
changeset
|
2828 && (! (tok == "e" |
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parents:
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diff
changeset
|
2829 || tok == "I" || tok == "i" |
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parents:
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changeset
|
2830 || tok == "J" || tok == "j" |
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parents:
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changeset
|
2831 || tok == "Inf" || tok == "inf" |
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parents:
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diff
changeset
|
2832 || tok == "NaN" || tok == "nan"))) |
16257
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parents:
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diff
changeset
|
2833 tok_val->mark_may_be_command (); |
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changeset
|
2834 |
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parents:
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diff
changeset
|
2835 push_token (tok_val); |
146 | 2836 |
16130
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localize use of yyleng with lexical_feedback member function
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parents:
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diff
changeset
|
2837 current_input_column += flex_yyleng (); |
146 | 2838 |
9324
29563379fa9b
don't look for object index after keyword
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parents:
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diff
changeset
|
2839 if (tok != "__end__") |
16113
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changeset
|
2840 looking_for_object_index = true; |
9324
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|
2841 |
16257
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changeset
|
2842 at_beginning_of_statement = false; |
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parents:
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diff
changeset
|
2843 |
146 | 2844 return NAME; |
2845 } | |
2846 | |
16113
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2847 void |
16158
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rename lexical_feedback to octave_lexer
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parents:
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diff
changeset
|
2848 octave_lexer::maybe_warn_separator_insert (char sep) |
3388 | 2849 { |
16203
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2850 std::string nm = fcn_file_full_name; |
3388 | 2851 |
5794 | 2852 if (nm.empty ()) |
2853 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
|
2854 "potential auto-insertion of '%c' near line %d", |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2855 sep, input_line_number); |
5794 | 2856 else |
2857 warning_with_id ("Octave:separator-insert", | |
15466
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John W. Eaton <jwe@octave.org>
parents:
14161
diff
changeset
|
2858 "potential auto-insertion of '%c' near line %d of file %s", |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2859 sep, input_line_number, nm.c_str ()); |
3388 | 2860 } |
2861 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2862 void |
16158
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rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2863 octave_lexer::gripe_single_quote_string (void) |
3400 | 2864 { |
16203
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parents:
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diff
changeset
|
2865 std::string nm = fcn_file_full_name; |
3400 | 2866 |
5794 | 2867 if (nm.empty ()) |
2868 warning_with_id ("Octave:single-quote-string", | |
10315
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untabify src C++ source files
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changeset
|
2869 "single quote delimited string near line %d", |
16113
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move static lexer helper functions to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2870 input_line_number); |
5794 | 2871 else |
2872 warning_with_id ("Octave:single-quote-string", | |
10315
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untabify src C++ source files
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parents:
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diff
changeset
|
2873 "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:
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diff
changeset
|
2874 input_line_number, nm.c_str ()); |
3400 | 2875 } |
2876 | |
16113
7c5e5e97a3bc
move static lexer helper functions to lexical_feedback class
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parents:
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diff
changeset
|
2877 void |
16158
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parents:
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diff
changeset
|
2878 octave_lexer::gripe_matlab_incompatible (const std::string& msg) |
4037 | 2879 { |
16203
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parents:
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diff
changeset
|
2880 std::string nm = fcn_file_full_name; |
8974
fde2a916b2ac
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changeset
|
2881 |
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changeset
|
2882 if (nm.empty ()) |
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diff
changeset
|
2883 warning_with_id ("Octave:matlab-incompatible", |
10315
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changeset
|
2884 "potential Matlab compatibility problem: %s", |
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diff
changeset
|
2885 msg.c_str ()); |
8974
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diff
changeset
|
2886 else |
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changeset
|
2887 warning_with_id ("Octave:matlab-incompatible", |
10315
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changeset
|
2888 "potential Matlab compatibility problem: %s near line %d offile %s", |
16113
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changeset
|
2889 msg.c_str (), input_line_number, nm.c_str ()); |
4037 | 2890 } |
2891 | |
16113
7c5e5e97a3bc
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diff
changeset
|
2892 void |
16158
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diff
changeset
|
2893 octave_lexer::maybe_gripe_matlab_incompatible_comment (char c) |
4037 | 2894 { |
2895 if (c == '#') | |
2896 gripe_matlab_incompatible ("# used as comment character"); | |
2897 } | |
2898 | |
16113
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changeset
|
2899 void |
16158
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diff
changeset
|
2900 octave_lexer::gripe_matlab_incompatible_continuation (void) |
4037 | 2901 { |
2902 gripe_matlab_incompatible ("\\ used as line continuation marker"); | |
2903 } | |
2904 | |
16113
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changeset
|
2905 void |
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diff
changeset
|
2906 octave_lexer::gripe_matlab_incompatible_operator (const std::string& op) |
4037 | 2907 { |
2908 std::string t = op; | |
2909 int n = t.length (); | |
2910 if (t[n-1] == '\n') | |
2911 t.resize (n-1); | |
2912 gripe_matlab_incompatible (t + " used as operator"); | |
2913 } | |
16119
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16118
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changeset
|
2914 |
b31eb56f4d84
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diff
changeset
|
2915 void |
16158
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rename lexical_feedback to octave_lexer
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diff
changeset
|
2916 octave_lexer::push_token (token *tok) |
16126
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localize use of yylval.tok_val in lexical_feedback member functions
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changeset
|
2917 { |
16149
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changeset
|
2918 YYSTYPE *lval = yyget_lval (scanner); |
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changeset
|
2919 lval->tok_val = tok; |
16230
4bf907906134
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diff
changeset
|
2920 tokens.push (tok); |
16126
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
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changeset
|
2921 } |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
2922 |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
2923 token * |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2924 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
|
2925 { |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
2926 YYSTYPE *lval = yyget_lval (scanner); |
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
2927 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
|
2928 } |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
2929 |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
2930 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
2931 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
|
2932 { |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2933 switch (tok) |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2934 { |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2935 case '=': std::cerr << "'='\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2936 case ':': std::cerr << "':'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2937 case '-': std::cerr << "'-'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2938 case '+': std::cerr << "'+'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2939 case '*': std::cerr << "'*'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2940 case '/': std::cerr << "'/'\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2941 case ADD_EQ: std::cerr << "ADD_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2942 case SUB_EQ: std::cerr << "SUB_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2943 case MUL_EQ: std::cerr << "MUL_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2944 case DIV_EQ: std::cerr << "DIV_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2945 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
|
2946 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
|
2947 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
|
2948 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
|
2949 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
|
2950 case EPOW_EQ: std::cerr << "EPOW_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2951 case AND_EQ: std::cerr << "AND_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2952 case OR_EQ: std::cerr << "OR_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2953 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
|
2954 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
|
2955 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
|
2956 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
|
2957 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>
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16118
diff
changeset
|
2958 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:
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diff
changeset
|
2959 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
|
2960 case EXPR_OR: std::cerr << "EXPR_OR\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2961 case EXPR_NOT: std::cerr << "EXPR_NOT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2962 case EXPR_LT: std::cerr << "EXPR_LT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2963 case EXPR_LE: std::cerr << "EXPR_LE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2964 case EXPR_EQ: std::cerr << "EXPR_EQ\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2965 case EXPR_NE: std::cerr << "EXPR_NE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2966 case EXPR_GE: std::cerr << "EXPR_GE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2967 case EXPR_GT: std::cerr << "EXPR_GT\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2968 case LEFTDIV: std::cerr << "LEFTDIV\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2969 case EMUL: std::cerr << "EMUL\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2970 case EDIV: std::cerr << "EDIV\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2971 case ELEFTDIV: std::cerr << "ELEFTDIV\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2972 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
|
2973 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
|
2974 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
|
2975 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
|
2976 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
|
2977 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
|
2978 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
|
2979 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
|
2980 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2981 case NUM: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2982 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
|
2983 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents:
16146
diff
changeset
|
2984 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
|
2985 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
|
2986 << " [" << 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
|
2987 } |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2988 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2989 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2990 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
|
2991 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents:
16146
diff
changeset
|
2992 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
|
2993 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
|
2994 } |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
2995 break; |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2996 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2997 case NAME: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
2998 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents:
16146
diff
changeset
|
2999 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
|
3000 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
|
3001 std::cerr << "NAME"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3002 if (sr) |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3003 std::cerr << " [" << sr->name () << "]"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3004 std::cerr << "\n"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3005 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3006 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3007 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3008 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
|
3009 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3010 case DQ_STRING: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3011 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
|
3012 { |
16148
10abbc493f50
delete unnecessary X-> references inside class X member functions
John W. Eaton <jwe@octave.org>
parents:
16146
diff
changeset
|
3013 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
|
3014 |
5c885c13bfa3
localize use of yylval.tok_val in lexical_feedback member functions
John W. Eaton <jwe@octave.org>
parents:
16125
diff
changeset
|
3015 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>
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16125
diff
changeset
|
3016 << " [" << 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
|
3017 } |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3018 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3019 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3020 case FOR: std::cerr << "FOR\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3021 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
|
3022 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
|
3023 case UNTIL: std::cerr << "UNTIL\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3024 case IF: std::cerr << "IF\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3025 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
|
3026 case ELSE: std::cerr << "ELSE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3027 case SWITCH: std::cerr << "SWITCH\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3028 case CASE: std::cerr << "CASE\n"; break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
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16118
diff
changeset
|
3029 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
|
3030 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
|
3031 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
|
3032 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
|
3033 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
|
3034 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
|
3035 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
|
3036 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
|
3037 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
|
3038 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
|
3039 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
|
3040 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
|
3041 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
|
3042 case FCN: std::cerr << "FCN\n"; break; |
16203
127cccb037bf
move more global parser and lexer variables to classes
John W. Eaton <jwe@octave.org>
parents:
16199
diff
changeset
|
3043 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
|
3044 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
|
3045 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
|
3046 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
|
3047 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
|
3048 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
|
3049 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
|
3050 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
|
3051 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
|
3052 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
|
3053 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
|
3054 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
|
3055 default: |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3056 { |
16166
cb80b1d062b1
don't attempt to print unprintable tokens
John W. Eaton <jwe@octave.org>
parents:
16164
diff
changeset
|
3057 if (tok < 256 && tok > 31) |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3058 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
|
3059 else |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3060 std::cerr << "UNKNOWN(" << tok << ")\n"; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3061 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3062 break; |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3063 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3064 } |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3065 |
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3066 void |
16158
7eb614760ddb
rename lexical_feedback to octave_lexer
John W. Eaton <jwe@octave.org>
parents:
16154
diff
changeset
|
3067 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
|
3068 { |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3069 error (msg); |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3070 |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3071 OCTAVE_QUIT; |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3072 |
16149
49dfba4fd3c5
use pure parser and reentrant lexer interfaces
John W. Eaton <jwe@octave.org>
parents:
16148
diff
changeset
|
3073 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
|
3074 } |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3075 |
053b0364b507
localize use of yy_fatal_error with lexical_feedback member function
John W. Eaton <jwe@octave.org>
parents:
16128
diff
changeset
|
3076 void |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3077 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
|
3078 { |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3079 if (lexer_debug_flag) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3080 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3081 std::cerr << std::endl; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3082 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3083 display_start_state (); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3084 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3085 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
|
3086 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
|
3087 } |
16119
b31eb56f4d84
maint: reorder class definitions in lex.ll
John W. Eaton <jwe@octave.org>
parents:
16118
diff
changeset
|
3088 } |
16224
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3089 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3090 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3091 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
|
3092 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3093 OCTAVE_YYG; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3094 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3095 start_state_stack.push (state); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3096 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3097 BEGIN (start_state ()); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3098 } |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3099 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3100 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3101 octave_lexer::pop_start_state (void) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3102 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3103 OCTAVE_YYG; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3104 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3105 start_state_stack.pop (); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3106 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3107 BEGIN (start_state ()); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3108 } |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3109 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3110 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3111 octave_lexer::clear_start_state (void) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3112 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3113 while (! start_state_stack.empty ()) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3114 start_state_stack.pop (); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3115 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3116 push_start_state (INITIAL); |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3117 } |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3118 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3119 void |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3120 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
|
3121 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3122 std::cerr << "S: "; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3123 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3124 switch (start_state ()) |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3125 { |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3126 case INITIAL: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3127 std::cerr << "INITIAL" << std::endl; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3128 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3129 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3130 case COMMAND_START: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3131 std::cerr << "COMMAND_START" << std::endl; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3132 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3133 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3134 case MATRIX_START: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3135 std::cerr << "MATRIX_START" << std::endl; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3136 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3137 |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3138 case INPUT_FILE_START: |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3139 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
|
3140 break; |
4a848eb52de2
use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3141 |
16228
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3142 case BLOCK_COMMENT_START: |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3143 std::cerr << "BLOCK_COMMENT_START" << std::endl; |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3144 break; |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3145 |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3146 case LINE_COMMENT_START: |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
16224
diff
changeset
|
3147 std::cerr << "LINE_COMMENT_START" << std::endl; |
e19b1632d7c1
revamp most comment handling
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3148 break; |
e19b1632d7c1
revamp most comment handling
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parents:
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diff
changeset
|
3149 |
16224
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use stack for tracking lexer start states
John W. Eaton <jwe@octave.org>
parents:
16209
diff
changeset
|
3150 default: |
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parents:
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diff
changeset
|
3151 std::cerr << "UNKNOWN START STATE!" << std::endl; |
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parents:
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diff
changeset
|
3152 break; |
4a848eb52de2
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3153 } |
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parents:
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diff
changeset
|
3154 } |
16229
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3155 |
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parents:
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diff
changeset
|
3156 int |
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parents:
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diff
changeset
|
3157 octave_lexer::handle_op (const char *pattern, int tok, bool convert, |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3158 bool bos, bool qit) |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3159 { |
16263
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3160 lexer_debug (pattern); |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3161 |
16229
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3162 return handle_op_internal (pattern, tok, convert, bos, qit, true); |
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3163 } |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3164 |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3165 int |
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3166 octave_lexer::handle_incompatible_op (const char *pattern, int tok, |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3167 bool convert, bool bos, bool qit) |
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use functions instead of token return macros in lexer
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parents:
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diff
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|
3168 { |
16263
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4/10 commits reworking the lexer
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parents:
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diff
changeset
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3169 lexer_debug (pattern); |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3170 |
16229
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parents:
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changeset
|
3171 return handle_op_internal (pattern, tok, convert, bos, qit, false); |
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3172 } |
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parents:
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diff
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|
3173 |
16263
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parents:
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changeset
|
3174 bool |
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parents:
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changeset
|
3175 octave_lexer::maybe_unput_comma_before_unary_op (int tok) |
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parents:
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changeset
|
3176 { |
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parents:
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diff
changeset
|
3177 int prev_tok = previous_token_value (); |
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parents:
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changeset
|
3178 |
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parents:
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changeset
|
3179 bool unput_comma = false; |
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parents:
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changeset
|
3180 |
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parents:
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changeset
|
3181 if (whitespace_is_significant () && space_follows_previous_token ()) |
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parents:
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changeset
|
3182 { |
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parents:
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diff
changeset
|
3183 int c = text_yyinput (); |
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parents:
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diff
changeset
|
3184 xunput (c); |
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4/10 commits reworking the lexer
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parents:
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changeset
|
3185 |
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parents:
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diff
changeset
|
3186 bool space_after = (c == ' ' || c == '\t'); |
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parents:
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diff
changeset
|
3187 |
16267
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parents:
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diff
changeset
|
3188 if (! (prev_tok == '[' || prev_tok == '{' |
16263
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3189 || previous_token_is_binop () |
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parents:
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diff
changeset
|
3190 || ((tok == '+' || tok == '-') && space_after))) |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3191 unput_comma = true; |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3192 } |
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parents:
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changeset
|
3193 |
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parents:
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diff
changeset
|
3194 return unput_comma; |
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parents:
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changeset
|
3195 } |
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parents:
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changeset
|
3196 |
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parents:
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changeset
|
3197 int |
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parents:
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diff
changeset
|
3198 octave_lexer::handle_unary_op (const char *pattern, int tok, bool convert, |
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parents:
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diff
changeset
|
3199 bool bos, bool qit) |
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4/10 commits reworking the lexer
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parents:
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changeset
|
3200 { |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3201 lexer_debug (pattern); |
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4/10 commits reworking the lexer
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parents:
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changeset
|
3202 |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3203 return maybe_unput_comma_before_unary_op (tok) |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3204 ? -1 : handle_op_internal (pattern, tok, convert, bos, qit, true); |
9acb86e6ac90
4/10 commits reworking the lexer
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parents:
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changeset
|
3205 } |
9acb86e6ac90
4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3206 |
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4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3207 int |
9acb86e6ac90
4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3208 octave_lexer::handle_incompatible_unary_op (const char *pattern, int tok, |
9acb86e6ac90
4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3209 bool convert, bool bos, bool qit) |
9acb86e6ac90
4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3210 { |
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4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3211 lexer_debug (pattern); |
9acb86e6ac90
4/10 commits reworking the lexer
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parents:
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changeset
|
3212 |
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4/10 commits reworking the lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3213 return maybe_unput_comma_before_unary_op (tok) |
9acb86e6ac90
4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3214 ? -1 : handle_op_internal (pattern, tok, convert, bos, qit, false); |
9acb86e6ac90
4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3215 } |
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4/10 commits reworking the lexer
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parents:
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diff
changeset
|
3216 |
16229
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3217 int |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3218 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:
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diff
changeset
|
3219 bool bos, bool qit, bool compat) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3220 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3221 if (! compat) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3222 gripe_matlab_incompatible_operator (flex_yytext ()); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3223 |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
16253
diff
changeset
|
3224 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:
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diff
changeset
|
3225 |
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3226 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
|
3227 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
|
3228 at_beginning_of_statement = bos; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3229 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3230 return count_token (tok); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3231 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3232 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3233 int |
16231
2b15ae55c721
put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents:
16230
diff
changeset
|
3234 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:
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diff
changeset
|
3235 { |
16255
12bf6a3f8c45
store more info in token value class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3236 token *tok_val = new token (tok, name, input_line_number, |
12bf6a3f8c45
store more info in token value class
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parents:
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diff
changeset
|
3237 current_input_column); |
16231
2b15ae55c721
put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents:
16230
diff
changeset
|
3238 |
2b15ae55c721
put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents:
16230
diff
changeset
|
3239 return handle_token (tok, tok_val); |
16229
7b7b1e4968e8
use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3240 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3241 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3242 int |
16231
2b15ae55c721
put all tokens in the token cache
John W. Eaton <jwe@octave.org>
parents:
16230
diff
changeset
|
3243 octave_lexer::handle_token (int tok, token *tok_val) |
16229
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3244 { |
16231
2b15ae55c721
put all tokens in the token cache
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parents:
16230
diff
changeset
|
3245 if (! tok_val) |
16255
12bf6a3f8c45
store more info in token value class
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parents:
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diff
changeset
|
3246 tok_val = new token (tok, input_line_number, current_input_column); |
16231
2b15ae55c721
put all tokens in the token cache
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parents:
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diff
changeset
|
3247 |
2b15ae55c721
put all tokens in the token cache
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parents:
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diff
changeset
|
3248 push_token (tok_val); |
2b15ae55c721
put all tokens in the token cache
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parents:
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diff
changeset
|
3249 |
16229
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3250 current_input_column += flex_yyleng (); |
7b7b1e4968e8
use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3251 |
16257
db7f07b22b9b
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parents:
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diff
changeset
|
3252 return count_token_internal (tok); |
16229
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use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3253 } |
7b7b1e4968e8
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parents:
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diff
changeset
|
3254 |
7b7b1e4968e8
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parents:
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diff
changeset
|
3255 int |
7b7b1e4968e8
use functions instead of token return macros in lexer
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parents:
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diff
changeset
|
3256 octave_lexer::count_token (int tok) |
7b7b1e4968e8
use functions instead of token return macros in lexer
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diff
changeset
|
3257 { |
16257
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parents:
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diff
changeset
|
3258 token *tok_val = new token (tok, input_line_number, current_input_column); |
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changeset
|
3259 |
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parents:
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changeset
|
3260 push_token (tok_val); |
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parents:
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diff
changeset
|
3261 |
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parents:
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changeset
|
3262 return count_token_internal (tok); |
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parents:
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diff
changeset
|
3263 } |
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changeset
|
3264 |
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diff
changeset
|
3265 int |
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parents:
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diff
changeset
|
3266 octave_lexer::count_token_internal (int tok) |
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diff
changeset
|
3267 { |
16229
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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3268 if (tok != '\n') |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3269 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3270 Vtoken_count++; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3271 token_count++; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3272 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3273 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3274 return show_token (tok); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3275 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3276 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3277 int |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3278 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
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|
3279 { |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3280 if (Vdisplay_tokens) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3281 display_token (tok); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3282 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3283 if (lexer_debug_flag) |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
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|
3284 { |
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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|
3285 std::cerr << "R: "; |
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use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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|
3286 display_token (tok); |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3287 std::cerr << std::endl; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3288 } |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
diff
changeset
|
3289 |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3290 return tok; |
7b7b1e4968e8
use functions instead of token return macros in lexer
John W. Eaton <jwe@octave.org>
parents:
16228
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|
3291 } |