annotate intl/plural.y @ 88:f214c1d5b862

merge 89
author Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 20 Dec 2011 18:53:46 +0900
parents a06113de4d67
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 %{
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2 /* Expression parsing for plural form selection.
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3 Copyright (C) 2000, 2001 Free Software Foundation, Inc.
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4 Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
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5
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6 This program is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU Library General Public License as published
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8 by the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 Library General Public License for more details.
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15
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16 You should have received a copy of the GNU Library General Public
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17 License along with this program; if not, write to the Free Software
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18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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19 USA. */
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20
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21 /* The bison generated parser uses alloca. AIX 3 forces us to put this
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22 declaration at the beginning of the file. The declaration in bison's
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23 skeleton file comes too late. This must come before <config.h>
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24 because <config.h> may include arbitrary system headers. */
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25 #if defined _AIX && !defined __GNUC__
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26 #pragma alloca
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27 #endif
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28
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29 #ifdef HAVE_CONFIG_H
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30 # include <config.h>
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31 #endif
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32
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33 #include <stddef.h>
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34 #include <stdlib.h>
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35 #include "plural-exp.h"
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36
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37 /* The main function generated by the parser is called __gettextparse,
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38 but we want it to be called PLURAL_PARSE. */
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39 #ifndef _LIBC
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40 # define __gettextparse PLURAL_PARSE
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41 #endif
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42
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43 #define YYLEX_PARAM &((struct parse_args *) arg)->cp
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44 #define YYPARSE_PARAM arg
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45 %}
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46 %pure_parser
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47 %expect 7
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48
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49 %union {
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50 unsigned long int num;
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51 enum operator op;
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52 struct expression *exp;
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53 }
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54
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55 %{
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56 /* Prototypes for local functions. */
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57 static struct expression *new_exp PARAMS ((int nargs, enum operator op,
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58 struct expression * const *args));
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59 static inline struct expression *new_exp_0 PARAMS ((enum operator op));
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60 static inline struct expression *new_exp_1 PARAMS ((enum operator op,
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61 struct expression *right));
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62 static struct expression *new_exp_2 PARAMS ((enum operator op,
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63 struct expression *left,
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64 struct expression *right));
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65 static inline struct expression *new_exp_3 PARAMS ((enum operator op,
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66 struct expression *bexp,
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67 struct expression *tbranch,
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68 struct expression *fbranch));
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69 static int yylex PARAMS ((YYSTYPE *lval, const char **pexp));
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70 static void yyerror PARAMS ((const char *str));
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71
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72 /* Allocation of expressions. */
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73
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74 static struct expression *
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75 new_exp (nargs, op, args)
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76 int nargs;
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77 enum operator op;
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78 struct expression * const *args;
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79 {
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80 int i;
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81 struct expression *newp;
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82
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83 /* If any of the argument could not be malloc'ed, just return NULL. */
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84 for (i = nargs - 1; i >= 0; i--)
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85 if (args[i] == NULL)
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86 goto fail;
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87
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88 /* Allocate a new expression. */
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89 newp = (struct expression *) malloc (sizeof (*newp));
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90 if (newp != NULL)
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91 {
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92 newp->nargs = nargs;
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93 newp->operation = op;
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94 for (i = nargs - 1; i >= 0; i--)
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95 newp->val.args[i] = args[i];
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96 return newp;
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97 }
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98
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99 fail:
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100 for (i = nargs - 1; i >= 0; i--)
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101 FREE_EXPRESSION (args[i]);
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102
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103 return NULL;
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104 }
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105
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106 static inline struct expression *
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107 new_exp_0 (op)
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108 enum operator op;
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109 {
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110 return new_exp (0, op, NULL);
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111 }
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112
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113 static inline struct expression *
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114 new_exp_1 (op, right)
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115 enum operator op;
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116 struct expression *right;
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117 {
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118 struct expression *args[1];
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119
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120 args[0] = right;
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121 return new_exp (1, op, args);
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122 }
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123
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124 static struct expression *
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125 new_exp_2 (op, left, right)
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126 enum operator op;
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127 struct expression *left;
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128 struct expression *right;
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129 {
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130 struct expression *args[2];
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131
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132 args[0] = left;
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133 args[1] = right;
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134 return new_exp (2, op, args);
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135 }
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136
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137 static inline struct expression *
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138 new_exp_3 (op, bexp, tbranch, fbranch)
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139 enum operator op;
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140 struct expression *bexp;
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141 struct expression *tbranch;
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142 struct expression *fbranch;
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143 {
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144 struct expression *args[3];
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145
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146 args[0] = bexp;
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147 args[1] = tbranch;
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148 args[2] = fbranch;
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149 return new_exp (3, op, args);
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150 }
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151
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152 %}
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153
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154 /* This declares that all operators have the same associativity and the
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155 precedence order as in C. See [Harbison, Steele: C, A Reference Manual].
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156 There is no unary minus and no bitwise operators.
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 Operators with the same syntactic behaviour have been merged into a single
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 token, to save space in the array generated by bison. */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 %right '?' /* ? */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 %left '|' /* || */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 %left '&' /* && */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 %left EQUOP2 /* == != */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 %left CMPOP2 /* < > <= >= */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 %left ADDOP2 /* + - */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 %left MULOP2 /* * / % */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 %right '!' /* ! */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
167
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 %token <op> EQUOP2 CMPOP2 ADDOP2 MULOP2
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 %token <num> NUMBER
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 %type <exp> exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
171
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 %%
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
173
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 start: exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 if ($1 == NULL)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 YYABORT;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 ((struct parse_args *) arg)->res = $1;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 ;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
181
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 exp: exp '?' exp ':' exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 $$ = new_exp_3 (qmop, $1, $3, $5);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 | exp '|' exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 $$ = new_exp_2 (lor, $1, $3);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 | exp '&' exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 $$ = new_exp_2 (land, $1, $3);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 | exp EQUOP2 exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 $$ = new_exp_2 ($2, $1, $3);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 | exp CMPOP2 exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 $$ = new_exp_2 ($2, $1, $3);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 | exp ADDOP2 exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 $$ = new_exp_2 ($2, $1, $3);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 | exp MULOP2 exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 $$ = new_exp_2 ($2, $1, $3);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 | '!' exp
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 $$ = new_exp_1 (lnot, $2);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 | 'n'
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
216 $$ = new_exp_0 (var);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 | NUMBER
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
220 if (($$ = new_exp_0 (num)) != NULL)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 $$->val.num = $1;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 | '(' exp ')'
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 $$ = $2;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 ;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
228
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 %%
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
230
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 void
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 internal_function
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 FREE_EXPRESSION (exp)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 struct expression *exp;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 if (exp == NULL)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 return;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
238
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 /* Handle the recursive case. */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 switch (exp->nargs)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 case 3:
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 FREE_EXPRESSION (exp->val.args[2]);
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 /* FALLTHROUGH */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 case 2:
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 FREE_EXPRESSION (exp->val.args[1]);
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
247 /* FALLTHROUGH */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 case 1:
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 FREE_EXPRESSION (exp->val.args[0]);
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 /* FALLTHROUGH */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 default:
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
254
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 free (exp);
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
257
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
258
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 static int
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 yylex (lval, pexp)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
261 YYSTYPE *lval;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 const char **pexp;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 const char *exp = *pexp;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 int result;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
266
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
267 while (1)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
269 if (exp[0] == '\0')
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
270 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
271 *pexp = exp;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
272 return YYEOF;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
273 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
274
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
275 if (exp[0] != ' ' && exp[0] != '\t')
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
276 break;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
277
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 ++exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
279 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
280
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
281 result = *exp++;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
282 switch (result)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
283 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
284 case '0': case '1': case '2': case '3': case '4':
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
285 case '5': case '6': case '7': case '8': case '9':
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
287 unsigned long int n = result - '0';
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
288 while (exp[0] >= '0' && exp[0] <= '9')
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
289 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
290 n *= 10;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
291 n += exp[0] - '0';
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
292 ++exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
293 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 lval->num = n;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
295 result = NUMBER;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
296 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
298
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
299 case '=':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 if (exp[0] == '=')
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 {
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 ++exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 lval->op = equal;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 result = EQUOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
305 }
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
306 else
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
307 result = YYERRCODE;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
308 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
309
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
310 case '!':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
311 if (exp[0] == '=')
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 {
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 ++exp;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 lval->op = not_equal;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 result = EQUOP2;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
317 break;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
318
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 case '&':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
320 case '|':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
321 if (exp[0] == result)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
322 ++exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
323 else
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
324 result = YYERRCODE;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
325 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
326
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
327 case '<':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
328 if (exp[0] == '=')
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
329 {
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
330 ++exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
331 lval->op = less_or_equal;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
332 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
333 else
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
334 lval->op = less_than;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
335 result = CMPOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
336 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
337
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
338 case '>':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
339 if (exp[0] == '=')
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
340 {
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
341 ++exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
342 lval->op = greater_or_equal;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
343 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
344 else
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
345 lval->op = greater_than;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
346 result = CMPOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
347 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
348
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
349 case '*':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
350 lval->op = mult;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
351 result = MULOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
352 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
353
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
354 case '/':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
355 lval->op = divide;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
356 result = MULOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
357 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
358
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
359 case '%':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
360 lval->op = module;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
361 result = MULOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
362 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
363
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
364 case '+':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
365 lval->op = plus;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
366 result = ADDOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
367 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
368
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
369 case '-':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
370 lval->op = minus;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
371 result = ADDOP2;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
372 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
373
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
374 case 'n':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
375 case '?':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
376 case ':':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
377 case '(':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
378 case ')':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
379 /* Nothing, just return the character. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
380 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
381
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
382 case ';':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
383 case '\n':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
384 case '\0':
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
385 /* Be safe and let the user call this function again. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
386 --exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
387 result = YYEOF;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
388 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
389
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
390 default:
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
391 result = YYERRCODE;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
392 #if YYDEBUG != 0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
393 --exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
394 #endif
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
395 break;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
396 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
397
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
398 *pexp = exp;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
399
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
400 return result;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
401 }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
402
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
403
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
404 static void
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
405 yyerror (str)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
406 const char *str;
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
407 {
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
408 /* Do nothing. We don't print error messages here. */
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
409 }