Mercurial > octave-nkf

annotate libinterp/parse-tree/token.cc @ 20624:7c0e10f035bd

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Extend parser to accept binary constants that begin with '0b' or '0B'. * NEWS: Announce change: * lex.ll: Define NUMBIN to be 0[bB] followed by 0,1, or '_'. Define NUMBER to be NUMREAL|NUMHEX|NUMBIN. *lex.ll (looks_like_bin): New function to detect 0[bB] prefix. *lex.ll (handle_numbe): Call looks_like_bin() and if found then convert binary string to double. * parser.tst: Add tests for new behavior.
author Rik <rik@octave.org>
date Fri, 09 Oct 2015 18:52:58 -0700
parents 734a77207e2e
children
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1 /*
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2
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3 Copyright (C) 1993-2015 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <cassert>
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28
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29 #include "error.h"
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30 #include "oct-obj.h"
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31 #include "symtab.h"
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32 #include "token.h"
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33 #include "utils.h"
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34
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35 token::token (int tv, int l, int c)
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36 {
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37 maybe_cmd = false;
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38 tspc = false;
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39 line_num = l;
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40 column_num = c;
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41 tok_val = tv;
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42 type_tag = generic_token;
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43 }
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44
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45 token::token (int tv, bool is_kw, int l, int c)
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46 {
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47 maybe_cmd = false;
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48 tspc = false;
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49 line_num = l;
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50 column_num = c;
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51 tok_val = tv;
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52 type_tag = is_kw ? keyword_token : generic_token;
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53 }
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54
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55 token::token (int tv, const char *s, int l, int c)
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56 {
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57 maybe_cmd = false;
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58 tspc = false;
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59 line_num = l;
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60 column_num = c;
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61 tok_val = tv;
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62 type_tag = string_token;
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63 str = new std::string (s);
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64 }
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65
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66 token::token (int tv, const std::string& s, int l, int c)
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67 {
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68 maybe_cmd = false;
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69 tspc = false;
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70 line_num = l;
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71 column_num = c;
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72 tok_val = tv;
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73 type_tag = string_token;
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74 str = new std::string (s);
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75 }
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76
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77 token::token (int tv, double d, const std::string& s, int l, int c)
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78 {
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79 maybe_cmd = false;
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80 tspc = false;
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81 line_num = l;
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82 column_num = c;
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83 tok_val = tv;
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84 type_tag = double_token;
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85 num = d;
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86 orig_text = s;
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87 }
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88
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89 token::token (int tv, end_tok_type t, int l, int c)
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90 {
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91 maybe_cmd = false;
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92 tspc = false;
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93 line_num = l;
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94 column_num = c;
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95 tok_val = tv;
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96 type_tag = ettype_token;
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97 et = t;
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98 }
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99
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100 token::token (int tv, symbol_table::symbol_record *s, int l, int c)
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101 {
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102 maybe_cmd = false;
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103 tspc = false;
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104 line_num = l;
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105 column_num = c;
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106 tok_val = tv;
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107 type_tag = sym_rec_token;
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108 sr = s;
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109 }
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110
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111 token::token (int tv, const std::string& mth, const std::string& cls,
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112 int l, int c)
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113 {
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114 maybe_cmd = false;
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115 tspc = false;
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116 line_num = l;
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117 column_num = c;
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118 tok_val = tv;
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119 type_tag = scls_name_token;
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120 sc.method_nm = new std::string (mth);
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121 sc.class_nm = new std::string (cls);
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122 }
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123
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124 token::~token (void)
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125 {
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126 if (type_tag == string_token)
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127 delete str;
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128
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129 if (type_tag == scls_name_token)
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130 {
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131 delete sc.method_nm;
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132 delete sc.class_nm;
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133 }
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134 }
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135
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136 std::string
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137 token::text (void) const
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138 {
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139 assert (type_tag == string_token);
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140 return *str;
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141 }
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142
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143 std::string
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144 token::symbol_name (void) const
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145 {
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146 assert (type_tag == sym_rec_token);
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147 return sr->name ();
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148 }
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149
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150 double
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151 token::number (void) const
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152 {
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153 assert (type_tag == double_token);
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154 return num;
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155 }
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156
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157 token::token_type
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158 token::ttype (void) const
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159 {
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160 return type_tag;
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161 }
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162
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163 token::end_tok_type
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164 token::ettype (void) const
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165 {
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166 assert (type_tag == ettype_token);
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167 return et;
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168 }
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169
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170 symbol_table::symbol_record *
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171 token::sym_rec (void)
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172 {
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173 assert (type_tag == sym_rec_token);
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174 return sr;
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175 }
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176
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177 std::string
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178 token::superclass_method_name (void)
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179 {
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180 assert (type_tag == scls_name_token);
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181 return *sc.method_nm;
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182 }
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183
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184 std::string
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185 token::superclass_class_name (void)
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186 {
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187 assert (type_tag == scls_name_token);
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188 return *sc.class_nm;
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189 }
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190
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191 std::string
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192 token::text_rep (void)
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193 {
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194 return orig_text;
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195 }