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annotate Bison-Flex/BasicCompiler-StackBase/script-parser.hh @ 1:a3ea4c73696b

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author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 10 May 2011 06:26:08 +0900
parents Bison-Flex/EUC/script-parser.hh@3f4ade70b4d2
children fbe42292d479
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 /* A Bison parser, made by GNU Bison 2.3. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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2
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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3 /* Skeleton interface for Bison LALR(1) parsers in C++
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4
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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5 Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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6
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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7 This program is free software; you can redistribute it and/or modify
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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8 it under the terms of the GNU General Public License as published by
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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9 the Free Software Foundation; either version 2, or (at your option)
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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10 any later version.
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11
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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12 This program is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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15 GNU General Public License for more details.
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16
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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17 You should have received a copy of the GNU General Public License
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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18 along with this program; if not, write to the Free Software
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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20 Boston, MA 02110-1301, USA. */
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21
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22 /* As a special exception, you may create a larger work that contains
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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23 part or all of the Bison parser skeleton and distribute that work
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24 under terms of your choice, so long as that work isn't itself a
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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25 parser generator using the skeleton or a modified version thereof
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26 as a parser skeleton. Alternatively, if you modify or redistribute
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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27 the parser skeleton itself, you may (at your option) remove this
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28 special exception, which will cause the skeleton and the resulting
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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29 Bison output files to be licensed under the GNU General Public
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30 License without this special exception.
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31
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32 This special exception was added by the Free Software Foundation in
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33 version 2.2 of Bison. */
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34
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35 /* C++ LALR(1) parser skeleton written by Akim Demaille. */
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36
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37 #ifndef PARSER_HEADER_H
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38 # define PARSER_HEADER_H
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39
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40 #include <string>
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41 #include <iostream>
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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42 #include "stack.hh"
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43
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44 namespace yy
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45 {
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46 class position;
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47 class location;
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48 }
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49
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50 /* First part of user declarations. */
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51 #line 4 "script-parser.yy"
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52
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53 #ifdef _MSC_VER
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54 #pragma warning(disable: 4800)
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55 #pragma warning(disable: 4267)
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56 #endif
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57
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58 #include <string>
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59 #include "node.h"
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60 class compiler;
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61
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62
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63 /* Line 35 of lalr1.cc. */
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64 #line 65 "script-parser.hh"
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65
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66 #include "location.hh"
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67
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68 /* Enabling traces. */
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69 #ifndef YYDEBUG
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70 # define YYDEBUG 0
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71 #endif
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72
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73 /* Enabling verbose error messages. */
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74 #ifdef YYERROR_VERBOSE
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75 # undef YYERROR_VERBOSE
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76 # define YYERROR_VERBOSE 1
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77 #else
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78 # define YYERROR_VERBOSE 1
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79 #endif
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80
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81 /* Enabling the token table. */
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82 #ifndef YYTOKEN_TABLE
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83 # define YYTOKEN_TABLE 0
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84 #endif
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85
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86 /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
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87 If N is 0, then set CURRENT to the empty location which ends
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88 the previous symbol: RHS[0] (always defined). */
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89
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90 #ifndef YYLLOC_DEFAULT
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91 # define YYLLOC_DEFAULT(Current, Rhs, N) \
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92 do { \
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93 if (N) \
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94 { \
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95 (Current).begin = (Rhs)[1].begin; \
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96 (Current).end = (Rhs)[N].end; \
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97 } \
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98 else \
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99 { \
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100 (Current).begin = (Current).end = (Rhs)[0].end; \
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101 } \
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102 } while (false)
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103 #endif
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104
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105 namespace yy
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106 {
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107
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108 /// A Bison parser.
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109 class script_parser
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110 {
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111 public:
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112 /// Symbol semantic values.
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113 #ifndef YYSTYPE
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114 union semantic_type
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115 #line 28 "script-parser.yy"
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116 {
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117 int ival;
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118 std::string *sval;
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119
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120 CArgs *args;
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121 CNode *expr;
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122 CAssign *assign;
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123 }
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124 /* Line 35 of lalr1.cc. */
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125 #line 126 "script-parser.hh"
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126 ;
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127 #else
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128 typedef YYSTYPE semantic_type;
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129 #endif
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130 /// Symbol locations.
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131 typedef location location_type;
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132 /// Tokens.
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133 struct token
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134 {
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135 /* Tokens. */
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136 enum yytokentype {
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137 END_OF_FILE = 0,
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138 TK_IVAL = 258,
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139 TK_IDENTIFIER = 259,
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140 TK_EQ = 260,
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141 TK_NE = 261,
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142 TK_GE = 262,
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143 TK_LE = 263,
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144 TK_NEWLINE = 264,
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145 TK_IF = 265,
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146 TK_THEN = 266,
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147 TK_ELSE = 267,
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148 TK_ENDIF = 268,
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149 TK_FOR = 269,
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150 TK_TO = 270,
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151 TK_NEXT = 271,
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152 TK_WHILE = 272,
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153 TK_WEND = 273,
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154 TK_END = 274,
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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155 TK_RAND = 275,
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156 TK_PRINT = 276,
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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157 NEG = 277
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158 };
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159
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160 };
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161 /// Token type.
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162 typedef token::yytokentype token_type;
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163
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164 /// Build a parser object.
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165 script_parser (compiler& driver_yyarg);
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166 virtual ~script_parser ();
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167
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168 /// Parse.
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169 /// \returns 0 iff parsing succeeded.
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170 virtual int parse ();
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171
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172 /// The current debugging stream.
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173 std::ostream& debug_stream () const;
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174 /// Set the current debugging stream.
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175 void set_debug_stream (std::ostream &);
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176
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177 /// Type for debugging levels.
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178 typedef int debug_level_type;
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179 /// The current debugging level.
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180 debug_level_type debug_level () const;
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181 /// Set the current debugging level.
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182 void set_debug_level (debug_level_type l);
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183
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184 private:
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185 /// Report a syntax error.
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186 /// \param loc where the syntax error is found.
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187 /// \param msg a description of the syntax error.
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188 virtual void error (const location_type& loc, const std::string& msg);
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189
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190 /// Generate an error message.
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191 /// \param state the state where the error occurred.
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192 /// \param tok the look-ahead token.
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193 virtual std::string yysyntax_error_ (int yystate, int tok);
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194
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195 #if YYDEBUG
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196 /// \brief Report a symbol value on the debug stream.
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197 /// \param yytype The token type.
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198 /// \param yyvaluep Its semantic value.
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199 /// \param yylocationp Its location.
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200 virtual void yy_symbol_value_print_ (int yytype,
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201 const semantic_type* yyvaluep,
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202 const location_type* yylocationp);
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203 /// \brief Report a symbol on the debug stream.
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204 /// \param yytype The token type.
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205 /// \param yyvaluep Its semantic value.
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206 /// \param yylocationp Its location.
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207 virtual void yy_symbol_print_ (int yytype,
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208 const semantic_type* yyvaluep,
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209 const location_type* yylocationp);
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210 #endif /* ! YYDEBUG */
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211
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212
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213 /// State numbers.
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214 typedef int state_type;
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215 /// State stack type.
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216 typedef stack<state_type> state_stack_type;
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217 /// Semantic value stack type.
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218 typedef stack<semantic_type> semantic_stack_type;
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219 /// location stack type.
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220 typedef stack<location_type> location_stack_type;
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221
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222 /// The state stack.
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223 state_stack_type yystate_stack_;
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224 /// The semantic value stack.
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225 semantic_stack_type yysemantic_stack_;
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226 /// The location stack.
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227 location_stack_type yylocation_stack_;
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228
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229 /// Internal symbol numbers.
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230 typedef unsigned char token_number_type;
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231 /* Tables. */
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232 /// For a state, the index in \a yytable_ of its portion.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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233 static const signed char yypact_[];
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234 static const signed char yypact_ninf_;
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235
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diff changeset
236 /// For a state, default rule to reduce.
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237 /// Unless\a yytable_ specifies something else to do.
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238 /// Zero means the default is an error.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff changeset
239 static const unsigned char yydefact_[];
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240
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241 static const signed char yypgoto_[];
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parents:
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242 static const signed char yydefgoto_[];
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243
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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244 /// What to do in a state.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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245 /// \a yytable_[yypact_[s]]: what to do in state \a s.
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246 /// - if positive, shift that token.
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247 /// - if negative, reduce the rule which number is the opposite.
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248 /// - if zero, do what YYDEFACT says.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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249 static const unsigned char yytable_[];
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parents:
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250 static const signed char yytable_ninf_;
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251
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252 static const signed char yycheck_[];
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253
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254 /// For a state, its accessing symbol.
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255 static const unsigned char yystos_[];
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256
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257 /// For a rule, its LHS.
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258 static const unsigned char yyr1_[];
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259 /// For a rule, its RHS length.
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260 static const unsigned char yyr2_[];
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261
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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262 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
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263 /// For a symbol, its name in clear.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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264 static const char* const yytname_[];
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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265 #endif
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266
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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267 #if YYERROR_VERBOSE
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268 /// Convert the symbol name \a n to a form suitable for a diagnostic.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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269 virtual std::string yytnamerr_ (const char *n);
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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270 #endif
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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271
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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272 #if YYDEBUG
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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273 /// A type to store symbol numbers and -1.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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274 typedef signed char rhs_number_type;
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275 /// A `-1'-separated list of the rules' RHS.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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276 static const rhs_number_type yyrhs_[];
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277 /// For each rule, the index of the first RHS symbol in \a yyrhs_.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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278 static const unsigned char yyprhs_[];
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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279 /// For each rule, its source line number.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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280 static const unsigned char yyrline_[];
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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281 /// For each scanner token number, its symbol number.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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282 static const unsigned short int yytoken_number_[];
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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283 /// Report on the debug stream that the rule \a r is going to be reduced.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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284 virtual void yy_reduce_print_ (int r);
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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285 /// Print the state stack on the debug stream.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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286 virtual void yystack_print_ ();
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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287 #endif
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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288
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289 /// Convert a scanner token number \a t to a symbol number.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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290 token_number_type yytranslate_ (int t);
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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291
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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292 /// \brief Reclaim the memory associated to a symbol.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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293 /// \param yymsg Why this token is reclaimed.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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294 /// \param yytype The symbol type.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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295 /// \param yyvaluep Its semantic value.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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296 /// \param yylocationp Its location.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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297 inline void yydestruct_ (const char* yymsg,
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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298 int yytype,
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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299 semantic_type* yyvaluep,
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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300 location_type* yylocationp);
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301
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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302 /// Pop \a n symbols the three stacks.
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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303 inline void yypop_ (unsigned int n = 1);
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304
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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305 /* Constants. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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306 static const int yyeof_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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307 /* LAST_ -- Last index in TABLE_. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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308 static const int yylast_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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309 static const int yynnts_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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310 static const int yyempty_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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311 static const int yyfinal_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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312 static const int yyterror_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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313 static const int yyerrcode_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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314 static const int yyntokens_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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315 static const unsigned int yyuser_token_number_max_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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316 static const token_number_type yyundef_token_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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317
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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318 /* Debugging. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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319 int yydebug_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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320 std::ostream* yycdebug_;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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321
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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322
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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323 /* User arguments. */
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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324 compiler& driver;
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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325 };
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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326 }
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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327
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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328
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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329 #endif /* ! defined PARSER_HEADER_H */