1 | /* YACC parser for C syntax and for Objective C. -*-c-*- |
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2 | Copyright (C) 1987, 88, 89, 92, 93, 94, 1995 Free Software Foundation, Inc. |
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3 | |
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4 | This file is part of GNU CC. |
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5 | |
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6 | GNU CC is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | 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 | GNU CC 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 |
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14 | GNU 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 General Public License |
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17 | along with GNU CC; see the file COPYING. If not, write to |
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18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | /* This file defines the grammar of C and that of Objective C. |
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22 | ifobjc ... end ifobjc conditionals contain code for Objective C only. |
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23 | ifc ... end ifc conditionals contain code for C only. |
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24 | Sed commands in Makefile.in are used to convert this file into |
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25 | c-parse.y and into objc-parse.y. */ |
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26 | |
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27 | /* To whomever it may concern: I have heard that such a thing was once |
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28 | written by AT&T, but I have never seen it. */ |
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29 | |
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30 | ifobjc |
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31 | %expect 48 |
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32 | end ifobjc |
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33 | ifc |
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34 | %expect 34 |
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35 | |
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36 | /* These are the 23 conflicts you should get in parse.output; |
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37 | the state numbers may vary if minor changes in the grammar are made. |
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38 | |
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39 | State 42 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.) |
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40 | State 44 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
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41 | State 103 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
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42 | State 110 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.) |
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43 | State 111 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
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44 | State 115 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
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45 | State 132 contains 1 shift/reduce conflict. (See comment at component_decl.) |
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46 | State 180 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTE.) |
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47 | State 194 contains 2 shift/reduce conflict. (Four ways to parse this.) |
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48 | State 202 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
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49 | State 214 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
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50 | State 220 contains 1 shift/reduce conflict. (Two ways to recover from error.) |
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51 | State 304 contains 2 shift/reduce conflicts. (Four ways to parse this.) |
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52 | State 335 contains 2 shift/reduce conflicts. (Four ways to parse this.) |
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53 | State 347 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.) |
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54 | State 352 contains 1 shift/reduce conflict. (Two ways to parse ATTRIBUTES.) |
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55 | State 383 contains 2 shift/reduce conflicts. (Four ways to parse this.) |
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56 | State 434 contains 2 shift/reduce conflicts. (Four ways to parse this.) */ |
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57 | |
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58 | end ifc |
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59 | |
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60 | %{ |
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61 | #include <stdio.h> |
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62 | #include <errno.h> |
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63 | #include <setjmp.h> |
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64 | |
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65 | #include "config.h" |
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66 | #include "tree.h" |
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67 | #include "input.h" |
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68 | #include "c-lex.h" |
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69 | #include "c-tree.h" |
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70 | #include "flags.h" |
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71 | |
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72 | #ifdef MULTIBYTE_CHARS |
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73 | #include <stdlib.h> |
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74 | #include <locale.h> |
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75 | #endif |
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76 | |
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77 | ifobjc |
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78 | #include "objc-act.h" |
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79 | end ifobjc |
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80 | |
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81 | /* Since parsers are distinct for each language, put the language string |
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82 | definition here. */ |
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83 | ifobjc |
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84 | char *language_string = "GNU Obj-C"; |
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85 | end ifobjc |
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86 | ifc |
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87 | char *language_string = "GNU C"; |
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88 | end ifc |
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89 | |
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90 | #ifndef errno |
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91 | extern int errno; |
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92 | #endif |
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93 | |
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94 | void yyerror (); |
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95 | |
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96 | /* Like YYERROR but do call yyerror. */ |
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97 | #define YYERROR1 { yyerror ("syntax error"); YYERROR; } |
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98 | |
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99 | /* Cause the `yydebug' variable to be defined. */ |
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100 | #define YYDEBUG 1 |
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101 | %} |
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102 | |
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103 | %start program |
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104 | |
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105 | %union {long itype; tree ttype; enum tree_code code; |
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106 | char *filename; int lineno; int ends_in_label; } |
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107 | |
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108 | /* All identifiers that are not reserved words |
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109 | and are not declared typedefs in the current block */ |
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110 | %token IDENTIFIER |
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111 | |
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112 | /* All identifiers that are declared typedefs in the current block. |
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113 | In some contexts, they are treated just like IDENTIFIER, |
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114 | but they can also serve as typespecs in declarations. */ |
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115 | %token TYPENAME |
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116 | |
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117 | /* Reserved words that specify storage class. |
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118 | yylval contains an IDENTIFIER_NODE which indicates which one. */ |
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119 | %token SCSPEC |
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120 | |
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121 | /* Reserved words that specify type. |
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122 | yylval contains an IDENTIFIER_NODE which indicates which one. */ |
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123 | %token TYPESPEC |
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124 | |
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125 | /* Reserved words that qualify type: "const" or "volatile". |
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126 | yylval contains an IDENTIFIER_NODE which indicates which one. */ |
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127 | %token TYPE_QUAL |
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128 | |
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129 | /* Character or numeric constants. |
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130 | yylval is the node for the constant. */ |
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131 | %token CONSTANT |
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132 | |
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133 | /* String constants in raw form. |
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134 | yylval is a STRING_CST node. */ |
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135 | %token STRING |
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136 | |
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137 | /* "...", used for functions with variable arglists. */ |
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138 | %token ELLIPSIS |
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139 | |
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140 | /* the reserved words */ |
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141 | /* SCO include files test "ASM", so use something else. */ |
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142 | %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT |
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143 | %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF |
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144 | %token ATTRIBUTE EXTENSION LABEL |
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145 | %token REALPART IMAGPART |
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146 | |
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147 | /* Add precedence rules to solve dangling else s/r conflict */ |
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148 | %nonassoc IF |
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149 | %nonassoc ELSE |
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150 | |
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151 | /* Define the operator tokens and their precedences. |
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152 | The value is an integer because, if used, it is the tree code |
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153 | to use in the expression made from the operator. */ |
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154 | |
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155 | %right <code> ASSIGN '=' |
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156 | %right <code> '?' ':' |
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157 | %left <code> OROR |
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158 | %left <code> ANDAND |
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159 | %left <code> '|' |
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160 | %left <code> '^' |
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161 | %left <code> '&' |
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162 | %left <code> EQCOMPARE |
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163 | %left <code> ARITHCOMPARE |
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164 | %left <code> LSHIFT RSHIFT |
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165 | %left <code> '+' '-' |
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166 | %left <code> '*' '/' '%' |
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167 | %right <code> UNARY PLUSPLUS MINUSMINUS |
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168 | %left HYPERUNARY |
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169 | %left <code> POINTSAT '.' '(' '[' |
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170 | |
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171 | /* The Objective-C keywords. These are included in C and in |
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172 | Objective C, so that the token codes are the same in both. */ |
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173 | %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE |
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174 | %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS |
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175 | |
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176 | /* Objective-C string constants in raw form. |
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177 | yylval is an OBJC_STRING_CST node. */ |
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178 | %token OBJC_STRING |
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179 | |
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180 | |
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181 | %type <code> unop |
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182 | |
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183 | %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist |
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184 | %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING |
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185 | %type <ttype> typed_declspecs reserved_declspecs |
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186 | %type <ttype> typed_typespecs reserved_typespecquals |
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187 | %type <ttype> declmods typespec typespecqual_reserved |
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188 | %type <ttype> SCSPEC TYPESPEC TYPE_QUAL nonempty_type_quals maybe_type_qual |
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189 | %type <ttype> initdecls notype_initdecls initdcl notype_initdcl |
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190 | %type <ttype> init maybeasm |
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191 | %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers |
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192 | %type <ttype> maybe_attribute attributes attribute attribute_list attrib |
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193 | %type <ttype> any_word |
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194 | |
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195 | %type <ttype> compstmt |
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196 | |
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197 | %type <ttype> declarator |
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198 | %type <ttype> notype_declarator after_type_declarator |
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199 | %type <ttype> parm_declarator |
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200 | |
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201 | %type <ttype> structsp component_decl_list component_decl_list2 |
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202 | %type <ttype> component_decl components component_declarator |
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203 | %type <ttype> enumlist enumerator |
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204 | %type <ttype> typename absdcl absdcl1 type_quals |
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205 | %type <ttype> xexpr parms parm identifiers |
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206 | |
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207 | %type <ttype> parmlist parmlist_1 parmlist_2 |
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208 | %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1 |
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209 | %type <ttype> identifiers_or_typenames |
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210 | |
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211 | %type <itype> setspecs |
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212 | |
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213 | %type <ends_in_label> lineno_stmt_or_label lineno_stmt_or_labels stmt_or_label |
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214 | |
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215 | %type <filename> save_filename |
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216 | %type <lineno> save_lineno |
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217 | |
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218 | ifobjc |
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219 | /* the Objective-C nonterminals */ |
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220 | |
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221 | %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator |
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222 | %type <ttype> methoddecl unaryselector keywordselector selector |
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223 | %type <ttype> keyworddecl receiver objcmessageexpr messageargs |
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224 | %type <ttype> keywordexpr keywordarglist keywordarg |
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225 | %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr |
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226 | %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr |
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227 | %type <ttype> objc_string protocolrefs identifier_list objcprotocolexpr |
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228 | %type <ttype> CLASSNAME OBJC_STRING OBJECTNAME |
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229 | end ifobjc |
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230 | |
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231 | %{ |
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232 | /* Number of statements (loosely speaking) seen so far. */ |
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233 | static int stmt_count; |
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234 | |
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235 | /* Input file and line number of the end of the body of last simple_if; |
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236 | used by the stmt-rule immediately after simple_if returns. */ |
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237 | static char *if_stmt_file; |
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238 | static int if_stmt_line; |
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239 | |
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240 | /* List of types and structure classes of the current declaration. */ |
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241 | static tree current_declspecs; |
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242 | static tree prefix_attributes = NULL_TREE; |
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243 | |
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244 | /* Stack of saved values of current_declspecs and prefix_attributes. */ |
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245 | static tree declspec_stack; |
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246 | |
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247 | /* 1 if we explained undeclared var errors. */ |
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248 | static int undeclared_variable_notice; |
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249 | |
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250 | ifobjc |
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251 | /* Objective-C specific information */ |
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252 | |
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253 | tree objc_interface_context; |
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254 | tree objc_implementation_context; |
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255 | tree objc_method_context; |
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256 | tree objc_ivar_chain; |
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257 | tree objc_ivar_context; |
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258 | enum tree_code objc_inherit_code; |
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259 | int objc_receiver_context; |
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260 | int objc_public_flag; |
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261 | |
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262 | end ifobjc |
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263 | |
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264 | /* Tell yyparse how to print a token's value, if yydebug is set. */ |
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265 | |
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266 | #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL) |
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267 | extern void yyprint (); |
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268 | %} |
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269 | |
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270 | %% |
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271 | program: /* empty */ |
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272 | { if (pedantic) |
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273 | pedwarn ("ANSI C forbids an empty source file"); |
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274 | finish_file (); |
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275 | } |
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276 | | extdefs |
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277 | { |
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278 | /* In case there were missing closebraces, |
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279 | get us back to the global binding level. */ |
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280 | while (! global_bindings_p ()) |
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281 | poplevel (0, 0, 0); |
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282 | finish_file (); |
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283 | } |
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284 | ; |
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285 | |
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286 | /* the reason for the strange actions in this rule |
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287 | is so that notype_initdecls when reached via datadef |
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288 | can find a valid list of type and sc specs in $0. */ |
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289 | |
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290 | extdefs: |
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291 | {$<ttype>$ = NULL_TREE; } extdef |
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292 | | extdefs {$<ttype>$ = NULL_TREE; } extdef |
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293 | ; |
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294 | |
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295 | extdef: |
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296 | fndef |
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297 | | datadef |
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298 | ifobjc |
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299 | | objcdef |
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300 | end ifobjc |
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301 | | ASM_KEYWORD '(' expr ')' ';' |
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302 | { STRIP_NOPS ($3); |
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303 | if ((TREE_CODE ($3) == ADDR_EXPR |
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304 | && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST) |
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305 | || TREE_CODE ($3) == STRING_CST) |
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306 | assemble_asm ($3); |
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307 | else |
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308 | error ("argument of `asm' is not a constant string"); } |
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309 | ; |
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310 | |
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311 | datadef: |
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312 | setspecs notype_initdecls ';' |
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313 | { if (pedantic) |
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314 | error ("ANSI C forbids data definition with no type or storage class"); |
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315 | else if (!flag_traditional) |
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316 | warning ("data definition has no type or storage class"); |
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317 | |
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318 | current_declspecs = TREE_VALUE (declspec_stack); |
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319 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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320 | declspec_stack = TREE_CHAIN (declspec_stack); |
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321 | resume_momentary ($1); } |
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322 | | declmods setspecs notype_initdecls ';' |
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323 | { current_declspecs = TREE_VALUE (declspec_stack); |
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324 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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325 | declspec_stack = TREE_CHAIN (declspec_stack); |
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326 | resume_momentary ($2); } |
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327 | | typed_declspecs setspecs initdecls ';' |
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328 | { current_declspecs = TREE_VALUE (declspec_stack); |
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329 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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330 | declspec_stack = TREE_CHAIN (declspec_stack); |
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331 | resume_momentary ($2); } |
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332 | | declmods ';' |
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333 | { pedwarn ("empty declaration"); } |
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334 | | typed_declspecs ';' |
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335 | { shadow_tag ($1); } |
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336 | | error ';' |
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337 | | error '}' |
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338 | | ';' |
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339 | { if (pedantic) |
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340 | pedwarn ("ANSI C does not allow extra `;' outside of a function"); } |
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341 | ; |
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342 | |
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343 | fndef: |
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344 | typed_declspecs setspecs declarator |
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345 | { if (! start_function ($1, $3, prefix_attributes, |
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346 | NULL_TREE, 0)) |
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347 | YYERROR1; |
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348 | reinit_parse_for_function (); } |
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349 | xdecls |
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350 | { store_parm_decls (); } |
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351 | compstmt_or_error |
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352 | { finish_function (0); |
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353 | current_declspecs = TREE_VALUE (declspec_stack); |
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354 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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355 | declspec_stack = TREE_CHAIN (declspec_stack); |
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356 | resume_momentary ($2); } |
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357 | | typed_declspecs setspecs declarator error |
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358 | { current_declspecs = TREE_VALUE (declspec_stack); |
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359 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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360 | declspec_stack = TREE_CHAIN (declspec_stack); |
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361 | resume_momentary ($2); } |
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362 | | declmods setspecs notype_declarator |
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363 | { if (! start_function ($1, $3, prefix_attributes, |
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364 | NULL_TREE, 0)) |
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365 | YYERROR1; |
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366 | reinit_parse_for_function (); } |
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367 | xdecls |
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368 | { store_parm_decls (); } |
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369 | compstmt_or_error |
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370 | { finish_function (0); |
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371 | current_declspecs = TREE_VALUE (declspec_stack); |
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372 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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373 | declspec_stack = TREE_CHAIN (declspec_stack); |
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374 | resume_momentary ($2); } |
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375 | | declmods setspecs notype_declarator error |
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376 | { current_declspecs = TREE_VALUE (declspec_stack); |
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377 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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378 | declspec_stack = TREE_CHAIN (declspec_stack); |
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379 | resume_momentary ($2); } |
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380 | | setspecs notype_declarator |
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381 | { if (! start_function (NULL_TREE, $2, |
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382 | prefix_attributes, NULL_TREE, 0)) |
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383 | YYERROR1; |
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384 | reinit_parse_for_function (); } |
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385 | xdecls |
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386 | { store_parm_decls (); } |
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387 | compstmt_or_error |
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388 | { finish_function (0); |
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389 | current_declspecs = TREE_VALUE (declspec_stack); |
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390 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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391 | declspec_stack = TREE_CHAIN (declspec_stack); |
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392 | resume_momentary ($1); } |
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393 | | setspecs notype_declarator error |
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394 | { current_declspecs = TREE_VALUE (declspec_stack); |
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395 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
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396 | declspec_stack = TREE_CHAIN (declspec_stack); |
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397 | resume_momentary ($1); } |
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398 | ; |
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399 | |
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400 | identifier: |
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401 | IDENTIFIER |
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402 | | TYPENAME |
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403 | ifobjc |
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404 | | OBJECTNAME |
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405 | | CLASSNAME |
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406 | end ifobjc |
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407 | ; |
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408 | |
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409 | unop: '&' |
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410 | { $$ = ADDR_EXPR; } |
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411 | | '-' |
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412 | { $$ = NEGATE_EXPR; } |
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413 | | '+' |
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414 | { $$ = CONVERT_EXPR; } |
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415 | | PLUSPLUS |
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416 | { $$ = PREINCREMENT_EXPR; } |
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417 | | MINUSMINUS |
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418 | { $$ = PREDECREMENT_EXPR; } |
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419 | | '~' |
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420 | { $$ = BIT_NOT_EXPR; } |
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421 | | '!' |
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422 | { $$ = TRUTH_NOT_EXPR; } |
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423 | ; |
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424 | |
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425 | expr: nonnull_exprlist |
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426 | { $$ = build_compound_expr ($1); } |
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427 | ; |
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428 | |
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429 | exprlist: |
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430 | /* empty */ |
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431 | { $$ = NULL_TREE; } |
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432 | | nonnull_exprlist |
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433 | ; |
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434 | |
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435 | nonnull_exprlist: |
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436 | expr_no_commas |
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437 | { $$ = build_tree_list (NULL_TREE, $1); } |
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438 | | nonnull_exprlist ',' expr_no_commas |
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439 | { chainon ($1, build_tree_list (NULL_TREE, $3)); } |
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440 | ; |
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441 | |
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442 | unary_expr: |
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443 | primary |
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444 | | '*' cast_expr %prec UNARY |
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445 | { $$ = build_indirect_ref ($2, "unary *"); } |
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446 | /* __extension__ turns off -pedantic for following primary. */ |
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447 | | EXTENSION |
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448 | { $<itype>1 = pedantic; |
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449 | pedantic = 0; } |
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450 | cast_expr %prec UNARY |
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451 | { $$ = $3; |
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452 | pedantic = $<itype>1; } |
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453 | | unop cast_expr %prec UNARY |
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454 | { $$ = build_unary_op ($1, $2, 0); |
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455 | overflow_warning ($$); } |
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456 | /* Refer to the address of a label as a pointer. */ |
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457 | | ANDAND identifier |
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458 | { tree label = lookup_label ($2); |
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459 | if (pedantic) |
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460 | pedwarn ("ANSI C forbids `&&'"); |
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461 | if (label == 0) |
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462 | $$ = null_pointer_node; |
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463 | else |
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464 | { |
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465 | TREE_USED (label) = 1; |
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466 | $$ = build1 (ADDR_EXPR, ptr_type_node, label); |
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467 | TREE_CONSTANT ($$) = 1; |
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468 | } |
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469 | } |
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470 | /* This seems to be impossible on some machines, so let's turn it off. |
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471 | You can use __builtin_next_arg to find the anonymous stack args. |
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472 | | '&' ELLIPSIS |
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473 | { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl)); |
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474 | $$ = error_mark_node; |
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475 | if (TREE_VALUE (tree_last (types)) == void_type_node) |
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476 | error ("`&...' used in function with fixed number of arguments"); |
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477 | else |
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478 | { |
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479 | if (pedantic) |
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480 | pedwarn ("ANSI C forbids `&...'"); |
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481 | $$ = tree_last (DECL_ARGUMENTS (current_function_decl)); |
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482 | $$ = build_unary_op (ADDR_EXPR, $$, 0); |
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483 | } } |
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484 | */ |
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485 | | SIZEOF unary_expr %prec UNARY |
---|
486 | { if (TREE_CODE ($2) == COMPONENT_REF |
---|
487 | && DECL_BIT_FIELD (TREE_OPERAND ($2, 1))) |
---|
488 | error ("`sizeof' applied to a bit-field"); |
---|
489 | $$ = c_sizeof (TREE_TYPE ($2)); } |
---|
490 | | SIZEOF '(' typename ')' %prec HYPERUNARY |
---|
491 | { $$ = c_sizeof (groktypename ($3)); } |
---|
492 | | ALIGNOF unary_expr %prec UNARY |
---|
493 | { $$ = c_alignof_expr ($2); } |
---|
494 | | ALIGNOF '(' typename ')' %prec HYPERUNARY |
---|
495 | { $$ = c_alignof (groktypename ($3)); } |
---|
496 | | REALPART cast_expr %prec UNARY |
---|
497 | { $$ = build_unary_op (REALPART_EXPR, $2, 0); } |
---|
498 | | IMAGPART cast_expr %prec UNARY |
---|
499 | { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); } |
---|
500 | ; |
---|
501 | |
---|
502 | cast_expr: |
---|
503 | unary_expr |
---|
504 | | '(' typename ')' cast_expr %prec UNARY |
---|
505 | { tree type = groktypename ($2); |
---|
506 | $$ = build_c_cast (type, $4); } |
---|
507 | | '(' typename ')' '{' |
---|
508 | { start_init (NULL_TREE, NULL, 0); |
---|
509 | $2 = groktypename ($2); |
---|
510 | really_start_incremental_init ($2); } |
---|
511 | initlist_maybe_comma '}' %prec UNARY |
---|
512 | { char *name; |
---|
513 | tree result = pop_init_level (0); |
---|
514 | tree type = $2; |
---|
515 | finish_init (); |
---|
516 | |
---|
517 | if (pedantic) |
---|
518 | pedwarn ("ANSI C forbids constructor expressions"); |
---|
519 | if (TYPE_NAME (type) != 0) |
---|
520 | { |
---|
521 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) |
---|
522 | name = IDENTIFIER_POINTER (TYPE_NAME (type)); |
---|
523 | else |
---|
524 | name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); |
---|
525 | } |
---|
526 | else |
---|
527 | name = ""; |
---|
528 | $$ = result; |
---|
529 | if (TREE_CODE (type) == ARRAY_TYPE && TYPE_SIZE (type) == 0) |
---|
530 | { |
---|
531 | int failure = complete_array_type (type, $$, 1); |
---|
532 | if (failure) |
---|
533 | abort (); |
---|
534 | } |
---|
535 | } |
---|
536 | ; |
---|
537 | |
---|
538 | expr_no_commas: |
---|
539 | cast_expr |
---|
540 | | expr_no_commas '+' expr_no_commas |
---|
541 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
542 | | expr_no_commas '-' expr_no_commas |
---|
543 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
544 | | expr_no_commas '*' expr_no_commas |
---|
545 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
546 | | expr_no_commas '/' expr_no_commas |
---|
547 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
548 | | expr_no_commas '%' expr_no_commas |
---|
549 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
550 | | expr_no_commas LSHIFT expr_no_commas |
---|
551 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
552 | | expr_no_commas RSHIFT expr_no_commas |
---|
553 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
554 | | expr_no_commas ARITHCOMPARE expr_no_commas |
---|
555 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
556 | | expr_no_commas EQCOMPARE expr_no_commas |
---|
557 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
558 | | expr_no_commas '&' expr_no_commas |
---|
559 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
560 | | expr_no_commas '|' expr_no_commas |
---|
561 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
562 | | expr_no_commas '^' expr_no_commas |
---|
563 | { $$ = parser_build_binary_op ($2, $1, $3); } |
---|
564 | | expr_no_commas ANDAND expr_no_commas |
---|
565 | { $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $3); } |
---|
566 | | expr_no_commas OROR expr_no_commas |
---|
567 | { $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $3); } |
---|
568 | | expr_no_commas '?' xexpr ':' expr_no_commas |
---|
569 | { $$ = build_conditional_expr ($1, $3, $5); } |
---|
570 | | expr_no_commas '=' expr_no_commas |
---|
571 | { $$ = build_modify_expr ($1, NOP_EXPR, $3); |
---|
572 | C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR); } |
---|
573 | | expr_no_commas ASSIGN expr_no_commas |
---|
574 | { $$ = build_modify_expr ($1, $2, $3); |
---|
575 | /* This inhibits warnings in truthvalue_conversion. */ |
---|
576 | C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK); } |
---|
577 | ; |
---|
578 | |
---|
579 | primary: |
---|
580 | IDENTIFIER |
---|
581 | { |
---|
582 | $$ = lastiddecl; |
---|
583 | if (!$$ || $$ == error_mark_node) |
---|
584 | { |
---|
585 | if (yychar == YYEMPTY) |
---|
586 | yychar = YYLEX; |
---|
587 | if (yychar == '(') |
---|
588 | { |
---|
589 | ifobjc |
---|
590 | tree decl; |
---|
591 | |
---|
592 | if (objc_receiver_context |
---|
593 | && ! (objc_receiver_context |
---|
594 | && strcmp (IDENTIFIER_POINTER ($1), "super"))) |
---|
595 | /* we have a message to super */ |
---|
596 | $$ = get_super_receiver (); |
---|
597 | else if (objc_method_context |
---|
598 | && (decl = is_ivar (objc_ivar_chain, $1))) |
---|
599 | { |
---|
600 | if (is_private (decl)) |
---|
601 | $$ = error_mark_node; |
---|
602 | else |
---|
603 | $$ = build_ivar_reference ($1); |
---|
604 | } |
---|
605 | else |
---|
606 | end ifobjc |
---|
607 | { |
---|
608 | /* Ordinary implicit function declaration. */ |
---|
609 | $$ = implicitly_declare ($1); |
---|
610 | assemble_external ($$); |
---|
611 | TREE_USED ($$) = 1; |
---|
612 | } |
---|
613 | } |
---|
614 | else if (current_function_decl == 0) |
---|
615 | { |
---|
616 | error ("`%s' undeclared here (not in a function)", |
---|
617 | IDENTIFIER_POINTER ($1)); |
---|
618 | $$ = error_mark_node; |
---|
619 | } |
---|
620 | else |
---|
621 | { |
---|
622 | ifobjc |
---|
623 | tree decl; |
---|
624 | |
---|
625 | if (objc_receiver_context |
---|
626 | && ! strcmp (IDENTIFIER_POINTER ($1), "super")) |
---|
627 | /* we have a message to super */ |
---|
628 | $$ = get_super_receiver (); |
---|
629 | else if (objc_method_context |
---|
630 | && (decl = is_ivar (objc_ivar_chain, $1))) |
---|
631 | { |
---|
632 | if (is_private (decl)) |
---|
633 | $$ = error_mark_node; |
---|
634 | else |
---|
635 | $$ = build_ivar_reference ($1); |
---|
636 | } |
---|
637 | else |
---|
638 | end ifobjc |
---|
639 | { |
---|
640 | if (IDENTIFIER_GLOBAL_VALUE ($1) != error_mark_node |
---|
641 | || IDENTIFIER_ERROR_LOCUS ($1) != current_function_decl) |
---|
642 | { |
---|
643 | error ("`%s' undeclared (first use this function)", |
---|
644 | IDENTIFIER_POINTER ($1)); |
---|
645 | |
---|
646 | if (! undeclared_variable_notice) |
---|
647 | { |
---|
648 | error ("(Each undeclared identifier is reported only once"); |
---|
649 | error ("for each function it appears in.)"); |
---|
650 | undeclared_variable_notice = 1; |
---|
651 | } |
---|
652 | } |
---|
653 | $$ = error_mark_node; |
---|
654 | /* Prevent repeated error messages. */ |
---|
655 | IDENTIFIER_GLOBAL_VALUE ($1) = error_mark_node; |
---|
656 | IDENTIFIER_ERROR_LOCUS ($1) = current_function_decl; |
---|
657 | } |
---|
658 | } |
---|
659 | } |
---|
660 | else if (TREE_TYPE ($$) == error_mark_node) |
---|
661 | $$ = error_mark_node; |
---|
662 | else if (C_DECL_ANTICIPATED ($$)) |
---|
663 | { |
---|
664 | /* The first time we see a build-in function used, |
---|
665 | if it has not been declared. */ |
---|
666 | C_DECL_ANTICIPATED ($$) = 0; |
---|
667 | if (yychar == YYEMPTY) |
---|
668 | yychar = YYLEX; |
---|
669 | if (yychar == '(') |
---|
670 | { |
---|
671 | /* Omit the implicit declaration we |
---|
672 | would ordinarily do, so we don't lose |
---|
673 | the actual built in type. |
---|
674 | But print a diagnostic for the mismatch. */ |
---|
675 | ifobjc |
---|
676 | if (objc_method_context |
---|
677 | && is_ivar (objc_ivar_chain, $1)) |
---|
678 | error ("Instance variable `%s' implicitly declared as function", |
---|
679 | IDENTIFIER_POINTER (DECL_NAME ($$))); |
---|
680 | else |
---|
681 | end ifobjc |
---|
682 | if (TREE_CODE ($$) != FUNCTION_DECL) |
---|
683 | error ("`%s' implicitly declared as function", |
---|
684 | IDENTIFIER_POINTER (DECL_NAME ($$))); |
---|
685 | else if ((TYPE_MODE (TREE_TYPE (TREE_TYPE ($$))) |
---|
686 | != TYPE_MODE (integer_type_node)) |
---|
687 | && (TREE_TYPE (TREE_TYPE ($$)) |
---|
688 | != void_type_node)) |
---|
689 | pedwarn ("type mismatch in implicit declaration for built-in function `%s'", |
---|
690 | IDENTIFIER_POINTER (DECL_NAME ($$))); |
---|
691 | /* If it really returns void, change that to int. */ |
---|
692 | if (TREE_TYPE (TREE_TYPE ($$)) == void_type_node) |
---|
693 | TREE_TYPE ($$) |
---|
694 | = build_function_type (integer_type_node, |
---|
695 | TYPE_ARG_TYPES (TREE_TYPE ($$))); |
---|
696 | } |
---|
697 | else |
---|
698 | pedwarn ("built-in function `%s' used without declaration", |
---|
699 | IDENTIFIER_POINTER (DECL_NAME ($$))); |
---|
700 | |
---|
701 | /* Do what we would ordinarily do when a fn is used. */ |
---|
702 | assemble_external ($$); |
---|
703 | TREE_USED ($$) = 1; |
---|
704 | } |
---|
705 | else |
---|
706 | { |
---|
707 | assemble_external ($$); |
---|
708 | TREE_USED ($$) = 1; |
---|
709 | ifobjc |
---|
710 | /* we have a definition - still check if iVariable */ |
---|
711 | |
---|
712 | if (!objc_receiver_context |
---|
713 | || (objc_receiver_context |
---|
714 | && strcmp (IDENTIFIER_POINTER ($1), "super"))) |
---|
715 | { |
---|
716 | tree decl; |
---|
717 | |
---|
718 | if (objc_method_context |
---|
719 | && (decl = is_ivar (objc_ivar_chain, $1))) |
---|
720 | { |
---|
721 | if (IDENTIFIER_LOCAL_VALUE ($1)) |
---|
722 | warning ("local declaration of `%s' hides instance variable", |
---|
723 | IDENTIFIER_POINTER ($1)); |
---|
724 | else |
---|
725 | { |
---|
726 | if (is_private (decl)) |
---|
727 | $$ = error_mark_node; |
---|
728 | else |
---|
729 | $$ = build_ivar_reference ($1); |
---|
730 | } |
---|
731 | } |
---|
732 | } |
---|
733 | else /* we have a message to super */ |
---|
734 | $$ = get_super_receiver (); |
---|
735 | end ifobjc |
---|
736 | } |
---|
737 | |
---|
738 | if (TREE_CODE ($$) == CONST_DECL) |
---|
739 | { |
---|
740 | $$ = DECL_INITIAL ($$); |
---|
741 | /* This is to prevent an enum whose value is 0 |
---|
742 | from being considered a null pointer constant. */ |
---|
743 | $$ = build1 (NOP_EXPR, TREE_TYPE ($$), $$); |
---|
744 | TREE_CONSTANT ($$) = 1; |
---|
745 | } |
---|
746 | } |
---|
747 | | CONSTANT |
---|
748 | | string |
---|
749 | { $$ = combine_strings ($1); } |
---|
750 | | '(' expr ')' |
---|
751 | { char class = TREE_CODE_CLASS (TREE_CODE ($2)); |
---|
752 | if (class == 'e' || class == '1' |
---|
753 | || class == '2' || class == '<') |
---|
754 | C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK); |
---|
755 | $$ = $2; } |
---|
756 | | '(' error ')' |
---|
757 | { $$ = error_mark_node; } |
---|
758 | | '(' |
---|
759 | { if (current_function_decl == 0) |
---|
760 | { |
---|
761 | error ("braced-group within expression allowed only inside a function"); |
---|
762 | YYERROR; |
---|
763 | } |
---|
764 | /* We must force a BLOCK for this level |
---|
765 | so that, if it is not expanded later, |
---|
766 | there is a way to turn off the entire subtree of blocks |
---|
767 | that are contained in it. */ |
---|
768 | keep_next_level (); |
---|
769 | push_iterator_stack (); |
---|
770 | push_label_level (); |
---|
771 | $<ttype>$ = expand_start_stmt_expr (); } |
---|
772 | compstmt ')' |
---|
773 | { tree rtl_exp; |
---|
774 | if (pedantic) |
---|
775 | pedwarn ("ANSI C forbids braced-groups within expressions"); |
---|
776 | pop_iterator_stack (); |
---|
777 | pop_label_level (); |
---|
778 | rtl_exp = expand_end_stmt_expr ($<ttype>2); |
---|
779 | /* The statements have side effects, so the group does. */ |
---|
780 | TREE_SIDE_EFFECTS (rtl_exp) = 1; |
---|
781 | |
---|
782 | if (TREE_CODE ($3) == BLOCK) |
---|
783 | { |
---|
784 | /* Make a BIND_EXPR for the BLOCK already made. */ |
---|
785 | $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp), |
---|
786 | NULL_TREE, rtl_exp, $3); |
---|
787 | /* Remove the block from the tree at this point. |
---|
788 | It gets put back at the proper place |
---|
789 | when the BIND_EXPR is expanded. */ |
---|
790 | delete_block ($3); |
---|
791 | } |
---|
792 | else |
---|
793 | $$ = $3; |
---|
794 | } |
---|
795 | | primary '(' exprlist ')' %prec '.' |
---|
796 | { $$ = build_function_call ($1, $3); } |
---|
797 | | primary '[' expr ']' %prec '.' |
---|
798 | { $$ = build_array_ref ($1, $3); } |
---|
799 | | primary '.' identifier |
---|
800 | { |
---|
801 | ifobjc |
---|
802 | if (doing_objc_thang) |
---|
803 | { |
---|
804 | if (is_public ($1, $3)) |
---|
805 | $$ = build_component_ref ($1, $3); |
---|
806 | else |
---|
807 | $$ = error_mark_node; |
---|
808 | } |
---|
809 | else |
---|
810 | end ifobjc |
---|
811 | $$ = build_component_ref ($1, $3); |
---|
812 | } |
---|
813 | | primary POINTSAT identifier |
---|
814 | { |
---|
815 | tree expr = build_indirect_ref ($1, "->"); |
---|
816 | |
---|
817 | ifobjc |
---|
818 | if (doing_objc_thang) |
---|
819 | { |
---|
820 | if (is_public (expr, $3)) |
---|
821 | $$ = build_component_ref (expr, $3); |
---|
822 | else |
---|
823 | $$ = error_mark_node; |
---|
824 | } |
---|
825 | else |
---|
826 | end ifobjc |
---|
827 | $$ = build_component_ref (expr, $3); |
---|
828 | } |
---|
829 | | primary PLUSPLUS |
---|
830 | { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); } |
---|
831 | | primary MINUSMINUS |
---|
832 | { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); } |
---|
833 | ifobjc |
---|
834 | | objcmessageexpr |
---|
835 | { $$ = build_message_expr ($1); } |
---|
836 | | objcselectorexpr |
---|
837 | { $$ = build_selector_expr ($1); } |
---|
838 | | objcprotocolexpr |
---|
839 | { $$ = build_protocol_expr ($1); } |
---|
840 | | objcencodeexpr |
---|
841 | { $$ = build_encode_expr ($1); } |
---|
842 | | objc_string |
---|
843 | { $$ = build_objc_string_object ($1); } |
---|
844 | end ifobjc |
---|
845 | ; |
---|
846 | |
---|
847 | /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */ |
---|
848 | string: |
---|
849 | STRING |
---|
850 | | string STRING |
---|
851 | { $$ = chainon ($1, $2); } |
---|
852 | ; |
---|
853 | |
---|
854 | ifobjc |
---|
855 | /* Produces an OBJC_STRING_CST with perhaps more OBJC_STRING_CSTs chained |
---|
856 | onto it. */ |
---|
857 | objc_string: |
---|
858 | OBJC_STRING |
---|
859 | | objc_string OBJC_STRING |
---|
860 | { $$ = chainon ($1, $2); } |
---|
861 | ; |
---|
862 | end ifobjc |
---|
863 | |
---|
864 | xdecls: |
---|
865 | /* empty */ |
---|
866 | | datadecls |
---|
867 | | datadecls ELLIPSIS |
---|
868 | /* ... is used here to indicate a varargs function. */ |
---|
869 | { c_mark_varargs (); |
---|
870 | if (pedantic) |
---|
871 | pedwarn ("ANSI C does not permit use of `varargs.h'"); } |
---|
872 | ; |
---|
873 | |
---|
874 | /* The following are analogous to lineno_decl, decls and decl |
---|
875 | except that they do not allow nested functions. |
---|
876 | They are used for old-style parm decls. */ |
---|
877 | lineno_datadecl: |
---|
878 | save_filename save_lineno datadecl |
---|
879 | { } |
---|
880 | ; |
---|
881 | |
---|
882 | datadecls: |
---|
883 | lineno_datadecl |
---|
884 | | errstmt |
---|
885 | | datadecls lineno_datadecl |
---|
886 | | lineno_datadecl errstmt |
---|
887 | ; |
---|
888 | |
---|
889 | datadecl: |
---|
890 | typed_declspecs setspecs initdecls ';' |
---|
891 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
892 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
893 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
894 | resume_momentary ($2); } |
---|
895 | | declmods setspecs notype_initdecls ';' |
---|
896 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
897 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
898 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
899 | resume_momentary ($2); } |
---|
900 | | typed_declspecs ';' |
---|
901 | { shadow_tag_warned ($1, 1); |
---|
902 | pedwarn ("empty declaration"); } |
---|
903 | | declmods ';' |
---|
904 | { pedwarn ("empty declaration"); } |
---|
905 | ; |
---|
906 | |
---|
907 | /* This combination which saves a lineno before a decl |
---|
908 | is the normal thing to use, rather than decl itself. |
---|
909 | This is to avoid shift/reduce conflicts in contexts |
---|
910 | where statement labels are allowed. */ |
---|
911 | lineno_decl: |
---|
912 | save_filename save_lineno decl |
---|
913 | { } |
---|
914 | ; |
---|
915 | |
---|
916 | decls: |
---|
917 | lineno_decl |
---|
918 | | errstmt |
---|
919 | | decls lineno_decl |
---|
920 | | lineno_decl errstmt |
---|
921 | ; |
---|
922 | |
---|
923 | /* records the type and storage class specs to use for processing |
---|
924 | the declarators that follow. |
---|
925 | Maintains a stack of outer-level values of current_declspecs, |
---|
926 | for the sake of parm declarations nested in function declarators. */ |
---|
927 | setspecs: /* empty */ |
---|
928 | { $$ = suspend_momentary (); |
---|
929 | pending_xref_error (); |
---|
930 | declspec_stack = tree_cons (prefix_attributes, |
---|
931 | current_declspecs, |
---|
932 | declspec_stack); |
---|
933 | current_declspecs = $<ttype>0; |
---|
934 | prefix_attributes = NULL_TREE; } |
---|
935 | ; |
---|
936 | |
---|
937 | setattrs: /* empty */ |
---|
938 | { prefix_attributes = chainon (prefix_attributes, $<ttype>0); } |
---|
939 | ; |
---|
940 | |
---|
941 | decl: |
---|
942 | typed_declspecs setspecs initdecls ';' |
---|
943 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
944 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
945 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
946 | resume_momentary ($2); } |
---|
947 | | declmods setspecs notype_initdecls ';' |
---|
948 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
949 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
950 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
951 | resume_momentary ($2); } |
---|
952 | | typed_declspecs setspecs nested_function |
---|
953 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
954 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
955 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
956 | resume_momentary ($2); } |
---|
957 | | declmods setspecs notype_nested_function |
---|
958 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
959 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
960 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
961 | resume_momentary ($2); } |
---|
962 | | typed_declspecs ';' |
---|
963 | { shadow_tag ($1); } |
---|
964 | | declmods ';' |
---|
965 | { pedwarn ("empty declaration"); } |
---|
966 | ; |
---|
967 | |
---|
968 | /* Declspecs which contain at least one type specifier or typedef name. |
---|
969 | (Just `const' or `volatile' is not enough.) |
---|
970 | A typedef'd name following these is taken as a name to be declared. */ |
---|
971 | |
---|
972 | typed_declspecs: |
---|
973 | typespec reserved_declspecs |
---|
974 | { $$ = tree_cons (NULL_TREE, $1, $2); } |
---|
975 | | declmods typespec reserved_declspecs |
---|
976 | { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); } |
---|
977 | ; |
---|
978 | |
---|
979 | reserved_declspecs: /* empty */ |
---|
980 | { $$ = NULL_TREE; } |
---|
981 | | reserved_declspecs typespecqual_reserved |
---|
982 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
983 | | reserved_declspecs SCSPEC |
---|
984 | { if (extra_warnings) |
---|
985 | warning ("`%s' is not at beginning of declaration", |
---|
986 | IDENTIFIER_POINTER ($2)); |
---|
987 | $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
988 | ; |
---|
989 | |
---|
990 | /* List of just storage classes and type modifiers. |
---|
991 | A declaration can start with just this, but then it cannot be used |
---|
992 | to redeclare a typedef-name. */ |
---|
993 | |
---|
994 | declmods: |
---|
995 | TYPE_QUAL |
---|
996 | { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); |
---|
997 | TREE_STATIC ($$) = 1; } |
---|
998 | | SCSPEC |
---|
999 | { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); } |
---|
1000 | | declmods TYPE_QUAL |
---|
1001 | { $$ = tree_cons (NULL_TREE, $2, $1); |
---|
1002 | TREE_STATIC ($$) = 1; } |
---|
1003 | | declmods SCSPEC |
---|
1004 | { if (extra_warnings && TREE_STATIC ($1)) |
---|
1005 | warning ("`%s' is not at beginning of declaration", |
---|
1006 | IDENTIFIER_POINTER ($2)); |
---|
1007 | $$ = tree_cons (NULL_TREE, $2, $1); |
---|
1008 | TREE_STATIC ($$) = TREE_STATIC ($1); } |
---|
1009 | ; |
---|
1010 | |
---|
1011 | |
---|
1012 | /* Used instead of declspecs where storage classes are not allowed |
---|
1013 | (that is, for typenames and structure components). |
---|
1014 | Don't accept a typedef-name if anything but a modifier precedes it. */ |
---|
1015 | |
---|
1016 | typed_typespecs: |
---|
1017 | typespec reserved_typespecquals |
---|
1018 | { $$ = tree_cons (NULL_TREE, $1, $2); } |
---|
1019 | | nonempty_type_quals typespec reserved_typespecquals |
---|
1020 | { $$ = chainon ($3, tree_cons (NULL_TREE, $2, $1)); } |
---|
1021 | ; |
---|
1022 | |
---|
1023 | reserved_typespecquals: /* empty */ |
---|
1024 | { $$ = NULL_TREE; } |
---|
1025 | | reserved_typespecquals typespecqual_reserved |
---|
1026 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
1027 | ; |
---|
1028 | |
---|
1029 | /* A typespec (but not a type qualifier). |
---|
1030 | Once we have seen one of these in a declaration, |
---|
1031 | if a typedef name appears then it is being redeclared. */ |
---|
1032 | |
---|
1033 | typespec: TYPESPEC |
---|
1034 | | structsp |
---|
1035 | | TYPENAME |
---|
1036 | { /* For a typedef name, record the meaning, not the name. |
---|
1037 | In case of `foo foo, bar;'. */ |
---|
1038 | $$ = lookup_name ($1); } |
---|
1039 | ifobjc |
---|
1040 | | CLASSNAME protocolrefs |
---|
1041 | { $$ = get_static_reference ($1, $2); } |
---|
1042 | | OBJECTNAME protocolrefs |
---|
1043 | { $$ = get_object_reference ($2); } |
---|
1044 | end ifobjc |
---|
1045 | | TYPEOF '(' expr ')' |
---|
1046 | { $$ = TREE_TYPE ($3); } |
---|
1047 | | TYPEOF '(' typename ')' |
---|
1048 | { $$ = groktypename ($3); } |
---|
1049 | ; |
---|
1050 | |
---|
1051 | /* A typespec that is a reserved word, or a type qualifier. */ |
---|
1052 | |
---|
1053 | typespecqual_reserved: TYPESPEC |
---|
1054 | | TYPE_QUAL |
---|
1055 | | structsp |
---|
1056 | ; |
---|
1057 | |
---|
1058 | initdecls: |
---|
1059 | initdcl |
---|
1060 | | initdecls ',' initdcl |
---|
1061 | ; |
---|
1062 | |
---|
1063 | notype_initdecls: |
---|
1064 | notype_initdcl |
---|
1065 | | notype_initdecls ',' initdcl |
---|
1066 | ; |
---|
1067 | |
---|
1068 | maybeasm: |
---|
1069 | /* empty */ |
---|
1070 | { $$ = NULL_TREE; } |
---|
1071 | | ASM_KEYWORD '(' string ')' |
---|
1072 | { if (TREE_CHAIN ($3)) $3 = combine_strings ($3); |
---|
1073 | $$ = $3; |
---|
1074 | } |
---|
1075 | ; |
---|
1076 | |
---|
1077 | initdcl: |
---|
1078 | declarator maybeasm maybe_attribute '=' |
---|
1079 | { $<ttype>$ = start_decl ($1, current_declspecs, 1, |
---|
1080 | $3, prefix_attributes); |
---|
1081 | start_init ($<ttype>$, $2, global_bindings_p ()); } |
---|
1082 | init |
---|
1083 | /* Note how the declaration of the variable is in effect while its init is parsed! */ |
---|
1084 | { finish_init (); |
---|
1085 | finish_decl ($<ttype>5, $6, $2); } |
---|
1086 | | declarator maybeasm maybe_attribute |
---|
1087 | { tree d = start_decl ($1, current_declspecs, 0, |
---|
1088 | $3, prefix_attributes); |
---|
1089 | finish_decl (d, NULL_TREE, $2); |
---|
1090 | } |
---|
1091 | ; |
---|
1092 | |
---|
1093 | notype_initdcl: |
---|
1094 | notype_declarator maybeasm maybe_attribute '=' |
---|
1095 | { $<ttype>$ = start_decl ($1, current_declspecs, 1, |
---|
1096 | $3, prefix_attributes); |
---|
1097 | start_init ($<ttype>$, $2, global_bindings_p ()); } |
---|
1098 | init |
---|
1099 | /* Note how the declaration of the variable is in effect while its init is parsed! */ |
---|
1100 | { finish_init (); |
---|
1101 | decl_attributes ($<ttype>5, $3, prefix_attributes); |
---|
1102 | finish_decl ($<ttype>5, $6, $2); } |
---|
1103 | | notype_declarator maybeasm maybe_attribute |
---|
1104 | { tree d = start_decl ($1, current_declspecs, 0, |
---|
1105 | $3, prefix_attributes); |
---|
1106 | finish_decl (d, NULL_TREE, $2); } |
---|
1107 | ; |
---|
1108 | /* the * rules are dummies to accept the Apollo extended syntax |
---|
1109 | so that the header files compile. */ |
---|
1110 | maybe_attribute: |
---|
1111 | /* empty */ |
---|
1112 | { $$ = NULL_TREE; } |
---|
1113 | | attributes |
---|
1114 | { $$ = $1; } |
---|
1115 | ; |
---|
1116 | |
---|
1117 | attributes: |
---|
1118 | attribute |
---|
1119 | { $$ = $1; } |
---|
1120 | | attributes attribute |
---|
1121 | { $$ = chainon ($1, $2); } |
---|
1122 | ; |
---|
1123 | |
---|
1124 | attribute: |
---|
1125 | ATTRIBUTE '(' '(' attribute_list ')' ')' |
---|
1126 | { $$ = $4; } |
---|
1127 | ; |
---|
1128 | |
---|
1129 | attribute_list: |
---|
1130 | attrib |
---|
1131 | { $$ = $1; } |
---|
1132 | | attribute_list ',' attrib |
---|
1133 | { $$ = chainon ($1, $3); } |
---|
1134 | ; |
---|
1135 | |
---|
1136 | attrib: |
---|
1137 | /* empty */ |
---|
1138 | { $$ = NULL_TREE; } |
---|
1139 | | any_word |
---|
1140 | { $$ = build_tree_list ($1, NULL_TREE); } |
---|
1141 | | any_word '(' IDENTIFIER ')' |
---|
1142 | { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); } |
---|
1143 | | any_word '(' IDENTIFIER ',' nonnull_exprlist ')' |
---|
1144 | { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); } |
---|
1145 | | any_word '(' exprlist ')' |
---|
1146 | { $$ = build_tree_list ($1, $3); } |
---|
1147 | ; |
---|
1148 | |
---|
1149 | /* This still leaves out most reserved keywords, |
---|
1150 | shouldn't we include them? */ |
---|
1151 | |
---|
1152 | any_word: |
---|
1153 | identifier |
---|
1154 | | SCSPEC |
---|
1155 | | TYPESPEC |
---|
1156 | | TYPE_QUAL |
---|
1157 | ; |
---|
1158 | |
---|
1159 | /* Initializers. `init' is the entry point. */ |
---|
1160 | |
---|
1161 | init: |
---|
1162 | expr_no_commas |
---|
1163 | | '{' |
---|
1164 | { really_start_incremental_init (NULL_TREE); |
---|
1165 | /* Note that the call to clear_momentary |
---|
1166 | is in process_init_element. */ |
---|
1167 | push_momentary (); } |
---|
1168 | initlist_maybe_comma '}' |
---|
1169 | { $$ = pop_init_level (0); |
---|
1170 | if ($$ == error_mark_node |
---|
1171 | && ! (yychar == STRING || yychar == CONSTANT)) |
---|
1172 | pop_momentary (); |
---|
1173 | else |
---|
1174 | pop_momentary_nofree (); } |
---|
1175 | |
---|
1176 | | error |
---|
1177 | { $$ = error_mark_node; } |
---|
1178 | ; |
---|
1179 | |
---|
1180 | /* `initlist_maybe_comma' is the guts of an initializer in braces. */ |
---|
1181 | initlist_maybe_comma: |
---|
1182 | /* empty */ |
---|
1183 | { if (pedantic) |
---|
1184 | pedwarn ("ANSI C forbids empty initializer braces"); } |
---|
1185 | | initlist1 maybecomma |
---|
1186 | ; |
---|
1187 | |
---|
1188 | initlist1: |
---|
1189 | initelt |
---|
1190 | | initlist1 ',' initelt |
---|
1191 | ; |
---|
1192 | |
---|
1193 | /* `initelt' is a single element of an initializer. |
---|
1194 | It may use braces. */ |
---|
1195 | initelt: |
---|
1196 | expr_no_commas |
---|
1197 | { process_init_element ($1); } |
---|
1198 | | '{' |
---|
1199 | { push_init_level (0); } |
---|
1200 | initlist_maybe_comma '}' |
---|
1201 | { process_init_element (pop_init_level (0)); } |
---|
1202 | | error |
---|
1203 | /* These are for labeled elements. The syntax for an array element |
---|
1204 | initializer conflicts with the syntax for an Objective-C message, |
---|
1205 | so don't include these productions in the Objective-C grammar. */ |
---|
1206 | ifc |
---|
1207 | | '[' expr_no_commas ELLIPSIS expr_no_commas ']' '=' |
---|
1208 | { set_init_index ($2, $4); } |
---|
1209 | initelt |
---|
1210 | | '[' expr_no_commas ']' '=' |
---|
1211 | { set_init_index ($2, NULL_TREE); } |
---|
1212 | initelt |
---|
1213 | | '[' expr_no_commas ']' |
---|
1214 | { set_init_index ($2, NULL_TREE); } |
---|
1215 | initelt |
---|
1216 | end ifc |
---|
1217 | | identifier ':' |
---|
1218 | { set_init_label ($1); } |
---|
1219 | initelt |
---|
1220 | | '.' identifier '=' |
---|
1221 | { set_init_label ($2); } |
---|
1222 | initelt |
---|
1223 | ; |
---|
1224 | |
---|
1225 | nested_function: |
---|
1226 | declarator |
---|
1227 | { push_c_function_context (); |
---|
1228 | if (! start_function (current_declspecs, $1, |
---|
1229 | prefix_attributes, NULL_TREE, 1)) |
---|
1230 | { |
---|
1231 | pop_c_function_context (); |
---|
1232 | YYERROR1; |
---|
1233 | } |
---|
1234 | reinit_parse_for_function (); } |
---|
1235 | xdecls |
---|
1236 | { store_parm_decls (); } |
---|
1237 | /* This used to use compstmt_or_error. |
---|
1238 | That caused a bug with input `f(g) int g {}', |
---|
1239 | where the use of YYERROR1 above caused an error |
---|
1240 | which then was handled by compstmt_or_error. |
---|
1241 | There followed a repeated execution of that same rule, |
---|
1242 | which called YYERROR1 again, and so on. */ |
---|
1243 | compstmt |
---|
1244 | { finish_function (1); |
---|
1245 | pop_c_function_context (); } |
---|
1246 | ; |
---|
1247 | |
---|
1248 | notype_nested_function: |
---|
1249 | notype_declarator |
---|
1250 | { push_c_function_context (); |
---|
1251 | if (! start_function (current_declspecs, $1, |
---|
1252 | prefix_attributes, NULL_TREE, 1)) |
---|
1253 | { |
---|
1254 | pop_c_function_context (); |
---|
1255 | YYERROR1; |
---|
1256 | } |
---|
1257 | reinit_parse_for_function (); } |
---|
1258 | xdecls |
---|
1259 | { store_parm_decls (); } |
---|
1260 | /* This used to use compstmt_or_error. |
---|
1261 | That caused a bug with input `f(g) int g {}', |
---|
1262 | where the use of YYERROR1 above caused an error |
---|
1263 | which then was handled by compstmt_or_error. |
---|
1264 | There followed a repeated execution of that same rule, |
---|
1265 | which called YYERROR1 again, and so on. */ |
---|
1266 | compstmt |
---|
1267 | { finish_function (1); |
---|
1268 | pop_c_function_context (); } |
---|
1269 | ; |
---|
1270 | |
---|
1271 | /* Any kind of declarator (thus, all declarators allowed |
---|
1272 | after an explicit typespec). */ |
---|
1273 | |
---|
1274 | declarator: |
---|
1275 | after_type_declarator |
---|
1276 | | notype_declarator |
---|
1277 | ; |
---|
1278 | |
---|
1279 | /* A declarator that is allowed only after an explicit typespec. */ |
---|
1280 | |
---|
1281 | after_type_declarator: |
---|
1282 | '(' after_type_declarator ')' |
---|
1283 | { $$ = $2; } |
---|
1284 | | after_type_declarator '(' parmlist_or_identifiers %prec '.' |
---|
1285 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1286 | /* | after_type_declarator '(' error ')' %prec '.' |
---|
1287 | { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE); |
---|
1288 | poplevel (0, 0, 0); } */ |
---|
1289 | | after_type_declarator '[' expr ']' %prec '.' |
---|
1290 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1291 | | after_type_declarator '[' ']' %prec '.' |
---|
1292 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1293 | | '*' type_quals after_type_declarator %prec UNARY |
---|
1294 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1295 | | attributes setattrs after_type_declarator |
---|
1296 | { $$ = $3; } |
---|
1297 | | TYPENAME |
---|
1298 | ifobjc |
---|
1299 | | OBJECTNAME |
---|
1300 | end ifobjc |
---|
1301 | ; |
---|
1302 | |
---|
1303 | /* Kinds of declarator that can appear in a parameter list |
---|
1304 | in addition to notype_declarator. This is like after_type_declarator |
---|
1305 | but does not allow a typedef name in parentheses as an identifier |
---|
1306 | (because it would conflict with a function with that typedef as arg). */ |
---|
1307 | |
---|
1308 | parm_declarator: |
---|
1309 | parm_declarator '(' parmlist_or_identifiers %prec '.' |
---|
1310 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1311 | /* | parm_declarator '(' error ')' %prec '.' |
---|
1312 | { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE); |
---|
1313 | poplevel (0, 0, 0); } */ |
---|
1314 | | parm_declarator '[' expr ']' %prec '.' |
---|
1315 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1316 | | parm_declarator '[' ']' %prec '.' |
---|
1317 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1318 | | '*' type_quals parm_declarator %prec UNARY |
---|
1319 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1320 | | attributes setattrs parm_declarator |
---|
1321 | { $$ = $3; } |
---|
1322 | | TYPENAME |
---|
1323 | ; |
---|
1324 | |
---|
1325 | /* A declarator allowed whether or not there has been |
---|
1326 | an explicit typespec. These cannot redeclare a typedef-name. */ |
---|
1327 | |
---|
1328 | notype_declarator: |
---|
1329 | notype_declarator '(' parmlist_or_identifiers %prec '.' |
---|
1330 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1331 | /* | notype_declarator '(' error ')' %prec '.' |
---|
1332 | { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE); |
---|
1333 | poplevel (0, 0, 0); } */ |
---|
1334 | | '(' notype_declarator ')' |
---|
1335 | { $$ = $2; } |
---|
1336 | | '*' type_quals notype_declarator %prec UNARY |
---|
1337 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1338 | | notype_declarator '[' expr ']' %prec '.' |
---|
1339 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1340 | | notype_declarator '[' ']' %prec '.' |
---|
1341 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1342 | | attributes setattrs notype_declarator |
---|
1343 | { $$ = $3; } |
---|
1344 | | IDENTIFIER |
---|
1345 | ; |
---|
1346 | |
---|
1347 | structsp: |
---|
1348 | STRUCT identifier '{' |
---|
1349 | { $$ = start_struct (RECORD_TYPE, $2); |
---|
1350 | /* Start scope of tag before parsing components. */ |
---|
1351 | } |
---|
1352 | component_decl_list '}' maybe_attribute |
---|
1353 | { $$ = finish_struct ($<ttype>4, $5, $7); } |
---|
1354 | | STRUCT '{' component_decl_list '}' maybe_attribute |
---|
1355 | { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE), |
---|
1356 | $3, $5); |
---|
1357 | } |
---|
1358 | | STRUCT identifier |
---|
1359 | { $$ = xref_tag (RECORD_TYPE, $2); } |
---|
1360 | | UNION identifier '{' |
---|
1361 | { $$ = start_struct (UNION_TYPE, $2); } |
---|
1362 | component_decl_list '}' maybe_attribute |
---|
1363 | { $$ = finish_struct ($<ttype>4, $5, $7); } |
---|
1364 | | UNION '{' component_decl_list '}' maybe_attribute |
---|
1365 | { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE), |
---|
1366 | $3, $5); |
---|
1367 | } |
---|
1368 | | UNION identifier |
---|
1369 | { $$ = xref_tag (UNION_TYPE, $2); } |
---|
1370 | | ENUM identifier '{' |
---|
1371 | { $<itype>3 = suspend_momentary (); |
---|
1372 | $$ = start_enum ($2); } |
---|
1373 | enumlist maybecomma_warn '}' maybe_attribute |
---|
1374 | { $$ = finish_enum ($<ttype>4, nreverse ($5), $8); |
---|
1375 | resume_momentary ($<itype>3); } |
---|
1376 | | ENUM '{' |
---|
1377 | { $<itype>2 = suspend_momentary (); |
---|
1378 | $$ = start_enum (NULL_TREE); } |
---|
1379 | enumlist maybecomma_warn '}' maybe_attribute |
---|
1380 | { $$ = finish_enum ($<ttype>3, nreverse ($4), $7); |
---|
1381 | resume_momentary ($<itype>2); } |
---|
1382 | | ENUM identifier |
---|
1383 | { $$ = xref_tag (ENUMERAL_TYPE, $2); } |
---|
1384 | ; |
---|
1385 | |
---|
1386 | maybecomma: |
---|
1387 | /* empty */ |
---|
1388 | | ',' |
---|
1389 | ; |
---|
1390 | |
---|
1391 | maybecomma_warn: |
---|
1392 | /* empty */ |
---|
1393 | | ',' |
---|
1394 | { if (pedantic) pedwarn ("comma at end of enumerator list"); } |
---|
1395 | ; |
---|
1396 | |
---|
1397 | component_decl_list: |
---|
1398 | component_decl_list2 |
---|
1399 | { $$ = $1; } |
---|
1400 | | component_decl_list2 component_decl |
---|
1401 | { $$ = chainon ($1, $2); |
---|
1402 | pedwarn ("no semicolon at end of struct or union"); } |
---|
1403 | ; |
---|
1404 | |
---|
1405 | component_decl_list2: /* empty */ |
---|
1406 | { $$ = NULL_TREE; } |
---|
1407 | | component_decl_list2 component_decl ';' |
---|
1408 | { $$ = chainon ($1, $2); } |
---|
1409 | | component_decl_list2 ';' |
---|
1410 | { if (pedantic) |
---|
1411 | pedwarn ("extra semicolon in struct or union specified"); } |
---|
1412 | ifobjc |
---|
1413 | /* foo(sizeof(struct{ @defs(ClassName)})); */ |
---|
1414 | | DEFS '(' CLASSNAME ')' |
---|
1415 | { |
---|
1416 | tree interface = lookup_interface ($3); |
---|
1417 | |
---|
1418 | if (interface) |
---|
1419 | $$ = get_class_ivars (interface); |
---|
1420 | else |
---|
1421 | { |
---|
1422 | error ("Cannot find interface declaration for `%s'", |
---|
1423 | IDENTIFIER_POINTER ($3)); |
---|
1424 | $$ = NULL_TREE; |
---|
1425 | } |
---|
1426 | } |
---|
1427 | end ifobjc |
---|
1428 | ; |
---|
1429 | |
---|
1430 | /* There is a shift-reduce conflict here, because `components' may |
---|
1431 | start with a `typename'. It happens that shifting (the default resolution) |
---|
1432 | does the right thing, because it treats the `typename' as part of |
---|
1433 | a `typed_typespecs'. |
---|
1434 | |
---|
1435 | It is possible that this same technique would allow the distinction |
---|
1436 | between `notype_initdecls' and `initdecls' to be eliminated. |
---|
1437 | But I am being cautious and not trying it. */ |
---|
1438 | |
---|
1439 | component_decl: |
---|
1440 | typed_typespecs setspecs components |
---|
1441 | { $$ = $3; |
---|
1442 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
1443 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
1444 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
1445 | resume_momentary ($2); } |
---|
1446 | | typed_typespecs |
---|
1447 | { if (pedantic) |
---|
1448 | pedwarn ("ANSI C forbids member declarations with no members"); |
---|
1449 | shadow_tag($1); |
---|
1450 | $$ = NULL_TREE; } |
---|
1451 | | nonempty_type_quals setspecs components |
---|
1452 | { $$ = $3; |
---|
1453 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
1454 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
1455 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
1456 | resume_momentary ($2); } |
---|
1457 | | nonempty_type_quals |
---|
1458 | { if (pedantic) |
---|
1459 | pedwarn ("ANSI C forbids member declarations with no members"); |
---|
1460 | shadow_tag($1); |
---|
1461 | $$ = NULL_TREE; } |
---|
1462 | | error |
---|
1463 | { $$ = NULL_TREE; } |
---|
1464 | ; |
---|
1465 | |
---|
1466 | components: |
---|
1467 | component_declarator |
---|
1468 | | components ',' component_declarator |
---|
1469 | { $$ = chainon ($1, $3); } |
---|
1470 | ; |
---|
1471 | |
---|
1472 | component_declarator: |
---|
1473 | save_filename save_lineno declarator maybe_attribute |
---|
1474 | { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE); |
---|
1475 | decl_attributes ($$, $4, prefix_attributes); } |
---|
1476 | | save_filename save_lineno |
---|
1477 | declarator ':' expr_no_commas maybe_attribute |
---|
1478 | { $$ = grokfield ($1, $2, $3, current_declspecs, $5); |
---|
1479 | decl_attributes ($$, $6, prefix_attributes); } |
---|
1480 | | save_filename save_lineno ':' expr_no_commas maybe_attribute |
---|
1481 | { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4); |
---|
1482 | decl_attributes ($$, $5, prefix_attributes); } |
---|
1483 | ; |
---|
1484 | |
---|
1485 | /* We chain the enumerators in reverse order. |
---|
1486 | They are put in forward order where enumlist is used. |
---|
1487 | (The order used to be significant, but no longer is so. |
---|
1488 | However, we still maintain the order, just to be clean.) */ |
---|
1489 | |
---|
1490 | enumlist: |
---|
1491 | enumerator |
---|
1492 | | enumlist ',' enumerator |
---|
1493 | { if ($1 == error_mark_node) |
---|
1494 | $$ = $1; |
---|
1495 | else |
---|
1496 | $$ = chainon ($3, $1); } |
---|
1497 | | error |
---|
1498 | { $$ = error_mark_node; } |
---|
1499 | ; |
---|
1500 | |
---|
1501 | |
---|
1502 | enumerator: |
---|
1503 | identifier |
---|
1504 | { $$ = build_enumerator ($1, NULL_TREE); } |
---|
1505 | | identifier '=' expr_no_commas |
---|
1506 | { $$ = build_enumerator ($1, $3); } |
---|
1507 | ; |
---|
1508 | |
---|
1509 | typename: |
---|
1510 | typed_typespecs absdcl |
---|
1511 | { $$ = build_tree_list ($1, $2); } |
---|
1512 | | nonempty_type_quals absdcl |
---|
1513 | { $$ = build_tree_list ($1, $2); } |
---|
1514 | ; |
---|
1515 | |
---|
1516 | absdcl: /* an absolute declarator */ |
---|
1517 | /* empty */ |
---|
1518 | { $$ = NULL_TREE; } |
---|
1519 | | absdcl1 |
---|
1520 | ; |
---|
1521 | |
---|
1522 | nonempty_type_quals: |
---|
1523 | TYPE_QUAL |
---|
1524 | { $$ = tree_cons (NULL_TREE, $1, NULL_TREE); } |
---|
1525 | | nonempty_type_quals TYPE_QUAL |
---|
1526 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
1527 | ; |
---|
1528 | |
---|
1529 | type_quals: |
---|
1530 | /* empty */ |
---|
1531 | { $$ = NULL_TREE; } |
---|
1532 | | type_quals TYPE_QUAL |
---|
1533 | { $$ = tree_cons (NULL_TREE, $2, $1); } |
---|
1534 | ; |
---|
1535 | |
---|
1536 | absdcl1: /* a nonempty absolute declarator */ |
---|
1537 | '(' absdcl1 ')' |
---|
1538 | { $$ = $2; } |
---|
1539 | /* `(typedef)1' is `int'. */ |
---|
1540 | | '*' type_quals absdcl1 %prec UNARY |
---|
1541 | { $$ = make_pointer_declarator ($2, $3); } |
---|
1542 | | '*' type_quals %prec UNARY |
---|
1543 | { $$ = make_pointer_declarator ($2, NULL_TREE); } |
---|
1544 | | absdcl1 '(' parmlist %prec '.' |
---|
1545 | { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); } |
---|
1546 | | absdcl1 '[' expr ']' %prec '.' |
---|
1547 | { $$ = build_nt (ARRAY_REF, $1, $3); } |
---|
1548 | | absdcl1 '[' ']' %prec '.' |
---|
1549 | { $$ = build_nt (ARRAY_REF, $1, NULL_TREE); } |
---|
1550 | | '(' parmlist %prec '.' |
---|
1551 | { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); } |
---|
1552 | | '[' expr ']' %prec '.' |
---|
1553 | { $$ = build_nt (ARRAY_REF, NULL_TREE, $2); } |
---|
1554 | | '[' ']' %prec '.' |
---|
1555 | { $$ = build_nt (ARRAY_REF, NULL_TREE, NULL_TREE); } |
---|
1556 | | attributes setattrs absdcl1 |
---|
1557 | { $$ = $3; } |
---|
1558 | ; |
---|
1559 | |
---|
1560 | /* at least one statement, the first of which parses without error. */ |
---|
1561 | /* stmts is used only after decls, so an invalid first statement |
---|
1562 | is actually regarded as an invalid decl and part of the decls. */ |
---|
1563 | |
---|
1564 | stmts: |
---|
1565 | lineno_stmt_or_labels |
---|
1566 | { |
---|
1567 | if (pedantic && $1) |
---|
1568 | pedwarn ("ANSI C forbids label at end of compound statement"); |
---|
1569 | } |
---|
1570 | ; |
---|
1571 | |
---|
1572 | lineno_stmt_or_labels: |
---|
1573 | lineno_stmt_or_label |
---|
1574 | | lineno_stmt_or_labels lineno_stmt_or_label |
---|
1575 | { $$ = $2; } |
---|
1576 | | lineno_stmt_or_labels errstmt |
---|
1577 | { $$ = 0; } |
---|
1578 | ; |
---|
1579 | |
---|
1580 | xstmts: |
---|
1581 | /* empty */ |
---|
1582 | | stmts |
---|
1583 | ; |
---|
1584 | |
---|
1585 | errstmt: error ';' |
---|
1586 | ; |
---|
1587 | |
---|
1588 | pushlevel: /* empty */ |
---|
1589 | { emit_line_note (input_filename, lineno); |
---|
1590 | pushlevel (0); |
---|
1591 | clear_last_expr (); |
---|
1592 | push_momentary (); |
---|
1593 | expand_start_bindings (0); |
---|
1594 | ifobjc |
---|
1595 | if (objc_method_context) |
---|
1596 | add_objc_decls (); |
---|
1597 | end ifobjc |
---|
1598 | } |
---|
1599 | ; |
---|
1600 | |
---|
1601 | /* Read zero or more forward-declarations for labels |
---|
1602 | that nested functions can jump to. */ |
---|
1603 | maybe_label_decls: |
---|
1604 | /* empty */ |
---|
1605 | | label_decls |
---|
1606 | { if (pedantic) |
---|
1607 | pedwarn ("ANSI C forbids label declarations"); } |
---|
1608 | ; |
---|
1609 | |
---|
1610 | label_decls: |
---|
1611 | label_decl |
---|
1612 | | label_decls label_decl |
---|
1613 | ; |
---|
1614 | |
---|
1615 | label_decl: |
---|
1616 | LABEL identifiers_or_typenames ';' |
---|
1617 | { tree link; |
---|
1618 | for (link = $2; link; link = TREE_CHAIN (link)) |
---|
1619 | { |
---|
1620 | tree label = shadow_label (TREE_VALUE (link)); |
---|
1621 | C_DECLARED_LABEL_FLAG (label) = 1; |
---|
1622 | declare_nonlocal_label (label); |
---|
1623 | } |
---|
1624 | } |
---|
1625 | ; |
---|
1626 | |
---|
1627 | /* This is the body of a function definition. |
---|
1628 | It causes syntax errors to ignore to the next openbrace. */ |
---|
1629 | compstmt_or_error: |
---|
1630 | compstmt |
---|
1631 | {} |
---|
1632 | | error compstmt |
---|
1633 | ; |
---|
1634 | |
---|
1635 | compstmt: '{' '}' |
---|
1636 | { $$ = convert (void_type_node, integer_zero_node); } |
---|
1637 | | '{' pushlevel maybe_label_decls decls xstmts '}' |
---|
1638 | { emit_line_note (input_filename, lineno); |
---|
1639 | expand_end_bindings (getdecls (), 1, 0); |
---|
1640 | $$ = poplevel (1, 1, 0); |
---|
1641 | if (yychar == CONSTANT || yychar == STRING) |
---|
1642 | pop_momentary_nofree (); |
---|
1643 | else |
---|
1644 | pop_momentary (); } |
---|
1645 | | '{' pushlevel maybe_label_decls error '}' |
---|
1646 | { emit_line_note (input_filename, lineno); |
---|
1647 | expand_end_bindings (getdecls (), kept_level_p (), 0); |
---|
1648 | $$ = poplevel (kept_level_p (), 0, 0); |
---|
1649 | if (yychar == CONSTANT || yychar == STRING) |
---|
1650 | pop_momentary_nofree (); |
---|
1651 | else |
---|
1652 | pop_momentary (); } |
---|
1653 | | '{' pushlevel maybe_label_decls stmts '}' |
---|
1654 | { emit_line_note (input_filename, lineno); |
---|
1655 | expand_end_bindings (getdecls (), kept_level_p (), 0); |
---|
1656 | $$ = poplevel (kept_level_p (), 0, 0); |
---|
1657 | if (yychar == CONSTANT || yychar == STRING) |
---|
1658 | pop_momentary_nofree (); |
---|
1659 | else |
---|
1660 | pop_momentary (); } |
---|
1661 | ; |
---|
1662 | |
---|
1663 | /* Value is number of statements counted as of the closeparen. */ |
---|
1664 | simple_if: |
---|
1665 | if_prefix lineno_labeled_stmt |
---|
1666 | /* Make sure expand_end_cond is run once |
---|
1667 | for each call to expand_start_cond. |
---|
1668 | Otherwise a crash is likely. */ |
---|
1669 | | if_prefix error |
---|
1670 | ; |
---|
1671 | |
---|
1672 | if_prefix: |
---|
1673 | IF '(' expr ')' |
---|
1674 | { emit_line_note ($<filename>-1, $<lineno>0); |
---|
1675 | expand_start_cond (truthvalue_conversion ($3), 0); |
---|
1676 | $<itype>$ = stmt_count; |
---|
1677 | if_stmt_file = $<filename>-1; |
---|
1678 | if_stmt_line = $<lineno>0; |
---|
1679 | position_after_white_space (); } |
---|
1680 | ; |
---|
1681 | |
---|
1682 | /* This is a subroutine of stmt. |
---|
1683 | It is used twice, once for valid DO statements |
---|
1684 | and once for catching errors in parsing the end test. */ |
---|
1685 | do_stmt_start: |
---|
1686 | DO |
---|
1687 | { stmt_count++; |
---|
1688 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1689 | /* See comment in `while' alternative, above. */ |
---|
1690 | emit_nop (); |
---|
1691 | expand_start_loop_continue_elsewhere (1); |
---|
1692 | position_after_white_space (); } |
---|
1693 | lineno_labeled_stmt WHILE |
---|
1694 | { expand_loop_continue_here (); } |
---|
1695 | ; |
---|
1696 | |
---|
1697 | save_filename: |
---|
1698 | { $$ = input_filename; } |
---|
1699 | ; |
---|
1700 | |
---|
1701 | save_lineno: |
---|
1702 | { $$ = lineno; } |
---|
1703 | ; |
---|
1704 | |
---|
1705 | lineno_labeled_stmt: |
---|
1706 | save_filename save_lineno stmt |
---|
1707 | { } |
---|
1708 | /* | save_filename save_lineno error |
---|
1709 | { } |
---|
1710 | */ |
---|
1711 | | save_filename save_lineno label lineno_labeled_stmt |
---|
1712 | { } |
---|
1713 | ; |
---|
1714 | |
---|
1715 | lineno_stmt_or_label: |
---|
1716 | save_filename save_lineno stmt_or_label |
---|
1717 | { $$ = $3; } |
---|
1718 | ; |
---|
1719 | |
---|
1720 | stmt_or_label: |
---|
1721 | stmt |
---|
1722 | { $$ = 0; } |
---|
1723 | | label |
---|
1724 | { $$ = 1; } |
---|
1725 | ; |
---|
1726 | |
---|
1727 | /* Parse a single real statement, not including any labels. */ |
---|
1728 | stmt: |
---|
1729 | compstmt |
---|
1730 | { stmt_count++; } |
---|
1731 | | all_iter_stmt |
---|
1732 | | expr ';' |
---|
1733 | { stmt_count++; |
---|
1734 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1735 | /* It appears that this should not be done--that a non-lvalue array |
---|
1736 | shouldn't get an error if the value isn't used. |
---|
1737 | Section 3.2.2.1 says that an array lvalue gets converted to a pointer |
---|
1738 | if it appears as a top-level expression, |
---|
1739 | but says nothing about non-lvalue arrays. */ |
---|
1740 | #if 0 |
---|
1741 | /* Call default_conversion to get an error |
---|
1742 | on referring to a register array if pedantic. */ |
---|
1743 | if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE |
---|
1744 | || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE) |
---|
1745 | $1 = default_conversion ($1); |
---|
1746 | #endif |
---|
1747 | iterator_expand ($1); |
---|
1748 | clear_momentary (); } |
---|
1749 | | simple_if ELSE |
---|
1750 | { expand_start_else (); |
---|
1751 | $<itype>1 = stmt_count; |
---|
1752 | position_after_white_space (); } |
---|
1753 | lineno_labeled_stmt |
---|
1754 | { expand_end_cond (); |
---|
1755 | if (extra_warnings && stmt_count == $<itype>1) |
---|
1756 | warning ("empty body in an else-statement"); } |
---|
1757 | | simple_if %prec IF |
---|
1758 | { expand_end_cond (); |
---|
1759 | /* This warning is here instead of in simple_if, because we |
---|
1760 | do not want a warning if an empty if is followed by an |
---|
1761 | else statement. Increment stmt_count so we don't |
---|
1762 | give a second error if this is a nested `if'. */ |
---|
1763 | if (extra_warnings && stmt_count++ == $<itype>1) |
---|
1764 | warning_with_file_and_line (if_stmt_file, if_stmt_line, |
---|
1765 | "empty body in an if-statement"); } |
---|
1766 | /* Make sure expand_end_cond is run once |
---|
1767 | for each call to expand_start_cond. |
---|
1768 | Otherwise a crash is likely. */ |
---|
1769 | | simple_if ELSE error |
---|
1770 | { expand_end_cond (); } |
---|
1771 | | WHILE |
---|
1772 | { stmt_count++; |
---|
1773 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1774 | /* The emit_nop used to come before emit_line_note, |
---|
1775 | but that made the nop seem like part of the preceding line. |
---|
1776 | And that was confusing when the preceding line was |
---|
1777 | inside of an if statement and was not really executed. |
---|
1778 | I think it ought to work to put the nop after the line number. |
---|
1779 | We will see. --rms, July 15, 1991. */ |
---|
1780 | emit_nop (); } |
---|
1781 | '(' expr ')' |
---|
1782 | { /* Don't start the loop till we have succeeded |
---|
1783 | in parsing the end test. This is to make sure |
---|
1784 | that we end every loop we start. */ |
---|
1785 | expand_start_loop (1); |
---|
1786 | emit_line_note (input_filename, lineno); |
---|
1787 | expand_exit_loop_if_false (NULL_PTR, |
---|
1788 | truthvalue_conversion ($4)); |
---|
1789 | position_after_white_space (); } |
---|
1790 | lineno_labeled_stmt |
---|
1791 | { expand_end_loop (); } |
---|
1792 | | do_stmt_start |
---|
1793 | '(' expr ')' ';' |
---|
1794 | { emit_line_note (input_filename, lineno); |
---|
1795 | expand_exit_loop_if_false (NULL_PTR, |
---|
1796 | truthvalue_conversion ($3)); |
---|
1797 | expand_end_loop (); |
---|
1798 | clear_momentary (); } |
---|
1799 | /* This rule is needed to make sure we end every loop we start. */ |
---|
1800 | | do_stmt_start error |
---|
1801 | { expand_end_loop (); |
---|
1802 | clear_momentary (); } |
---|
1803 | | FOR |
---|
1804 | '(' xexpr ';' |
---|
1805 | { stmt_count++; |
---|
1806 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1807 | /* See comment in `while' alternative, above. */ |
---|
1808 | emit_nop (); |
---|
1809 | if ($3) c_expand_expr_stmt ($3); |
---|
1810 | /* Next step is to call expand_start_loop_continue_elsewhere, |
---|
1811 | but wait till after we parse the entire for (...). |
---|
1812 | Otherwise, invalid input might cause us to call that |
---|
1813 | fn without calling expand_end_loop. */ |
---|
1814 | } |
---|
1815 | xexpr ';' |
---|
1816 | /* Can't emit now; wait till after expand_start_loop... */ |
---|
1817 | { $<lineno>7 = lineno; |
---|
1818 | $<filename>$ = input_filename; } |
---|
1819 | xexpr ')' |
---|
1820 | { |
---|
1821 | /* Start the loop. Doing this after parsing |
---|
1822 | all the expressions ensures we will end the loop. */ |
---|
1823 | expand_start_loop_continue_elsewhere (1); |
---|
1824 | /* Emit the end-test, with a line number. */ |
---|
1825 | emit_line_note ($<filename>8, $<lineno>7); |
---|
1826 | if ($6) |
---|
1827 | expand_exit_loop_if_false (NULL_PTR, |
---|
1828 | truthvalue_conversion ($6)); |
---|
1829 | /* Don't let the tree nodes for $9 be discarded by |
---|
1830 | clear_momentary during the parsing of the next stmt. */ |
---|
1831 | push_momentary (); |
---|
1832 | $<lineno>7 = lineno; |
---|
1833 | $<filename>8 = input_filename; |
---|
1834 | position_after_white_space (); } |
---|
1835 | lineno_labeled_stmt |
---|
1836 | { /* Emit the increment expression, with a line number. */ |
---|
1837 | emit_line_note ($<filename>8, $<lineno>7); |
---|
1838 | expand_loop_continue_here (); |
---|
1839 | if ($9) |
---|
1840 | c_expand_expr_stmt ($9); |
---|
1841 | if (yychar == CONSTANT || yychar == STRING) |
---|
1842 | pop_momentary_nofree (); |
---|
1843 | else |
---|
1844 | pop_momentary (); |
---|
1845 | expand_end_loop (); } |
---|
1846 | | SWITCH '(' expr ')' |
---|
1847 | { stmt_count++; |
---|
1848 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1849 | c_expand_start_case ($3); |
---|
1850 | /* Don't let the tree nodes for $3 be discarded by |
---|
1851 | clear_momentary during the parsing of the next stmt. */ |
---|
1852 | push_momentary (); |
---|
1853 | position_after_white_space (); } |
---|
1854 | lineno_labeled_stmt |
---|
1855 | { expand_end_case ($3); |
---|
1856 | if (yychar == CONSTANT || yychar == STRING) |
---|
1857 | pop_momentary_nofree (); |
---|
1858 | else |
---|
1859 | pop_momentary (); } |
---|
1860 | | BREAK ';' |
---|
1861 | { stmt_count++; |
---|
1862 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1863 | if ( ! expand_exit_something ()) |
---|
1864 | error ("break statement not within loop or switch"); } |
---|
1865 | | CONTINUE ';' |
---|
1866 | { stmt_count++; |
---|
1867 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1868 | if (! expand_continue_loop (NULL_PTR)) |
---|
1869 | error ("continue statement not within a loop"); } |
---|
1870 | | RETURN ';' |
---|
1871 | { stmt_count++; |
---|
1872 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1873 | c_expand_return (NULL_TREE); } |
---|
1874 | | RETURN expr ';' |
---|
1875 | { stmt_count++; |
---|
1876 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1877 | c_expand_return ($2); } |
---|
1878 | | ASM_KEYWORD maybe_type_qual '(' expr ')' ';' |
---|
1879 | { stmt_count++; |
---|
1880 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1881 | STRIP_NOPS ($4); |
---|
1882 | if ((TREE_CODE ($4) == ADDR_EXPR |
---|
1883 | && TREE_CODE (TREE_OPERAND ($4, 0)) == STRING_CST) |
---|
1884 | || TREE_CODE ($4) == STRING_CST) |
---|
1885 | expand_asm ($4); |
---|
1886 | else |
---|
1887 | error ("argument of `asm' is not a constant string"); } |
---|
1888 | /* This is the case with just output operands. */ |
---|
1889 | | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';' |
---|
1890 | { stmt_count++; |
---|
1891 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1892 | c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE, |
---|
1893 | $2 == ridpointers[(int)RID_VOLATILE], |
---|
1894 | input_filename, lineno); } |
---|
1895 | /* This is the case with input operands as well. */ |
---|
1896 | | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' asm_operands ')' ';' |
---|
1897 | { stmt_count++; |
---|
1898 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1899 | c_expand_asm_operands ($4, $6, $8, NULL_TREE, |
---|
1900 | $2 == ridpointers[(int)RID_VOLATILE], |
---|
1901 | input_filename, lineno); } |
---|
1902 | /* This is the case with clobbered registers as well. */ |
---|
1903 | | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' |
---|
1904 | asm_operands ':' asm_clobbers ')' ';' |
---|
1905 | { stmt_count++; |
---|
1906 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1907 | c_expand_asm_operands ($4, $6, $8, $10, |
---|
1908 | $2 == ridpointers[(int)RID_VOLATILE], |
---|
1909 | input_filename, lineno); } |
---|
1910 | | GOTO identifier ';' |
---|
1911 | { tree decl; |
---|
1912 | stmt_count++; |
---|
1913 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1914 | decl = lookup_label ($2); |
---|
1915 | if (decl != 0) |
---|
1916 | { |
---|
1917 | TREE_USED (decl) = 1; |
---|
1918 | expand_goto (decl); |
---|
1919 | } |
---|
1920 | } |
---|
1921 | | GOTO '*' expr ';' |
---|
1922 | { stmt_count++; |
---|
1923 | emit_line_note ($<filename>-1, $<lineno>0); |
---|
1924 | expand_computed_goto (convert (ptr_type_node, $3)); } |
---|
1925 | | ';' |
---|
1926 | ; |
---|
1927 | |
---|
1928 | all_iter_stmt: |
---|
1929 | all_iter_stmt_simple |
---|
1930 | /* | all_iter_stmt_with_decl */ |
---|
1931 | ; |
---|
1932 | |
---|
1933 | all_iter_stmt_simple: |
---|
1934 | FOR '(' primary ')' |
---|
1935 | { |
---|
1936 | /* The value returned by this action is */ |
---|
1937 | /* 1 if everything is OK */ |
---|
1938 | /* 0 in case of error or already bound iterator */ |
---|
1939 | |
---|
1940 | $<itype>$ = 0; |
---|
1941 | if (TREE_CODE ($3) != VAR_DECL) |
---|
1942 | error ("invalid `for (ITERATOR)' syntax"); |
---|
1943 | else if (! ITERATOR_P ($3)) |
---|
1944 | error ("`%s' is not an iterator", |
---|
1945 | IDENTIFIER_POINTER (DECL_NAME ($3))); |
---|
1946 | else if (ITERATOR_BOUND_P ($3)) |
---|
1947 | error ("`for (%s)' inside expansion of same iterator", |
---|
1948 | IDENTIFIER_POINTER (DECL_NAME ($3))); |
---|
1949 | else |
---|
1950 | { |
---|
1951 | $<itype>$ = 1; |
---|
1952 | iterator_for_loop_start ($3); |
---|
1953 | } |
---|
1954 | } |
---|
1955 | lineno_labeled_stmt |
---|
1956 | { |
---|
1957 | if ($<itype>5) |
---|
1958 | iterator_for_loop_end ($3); |
---|
1959 | } |
---|
1960 | |
---|
1961 | /* This really should allow any kind of declaration, |
---|
1962 | for generality. Fix it before turning it back on. |
---|
1963 | |
---|
1964 | all_iter_stmt_with_decl: |
---|
1965 | FOR '(' ITERATOR pushlevel setspecs iterator_spec ')' |
---|
1966 | { |
---|
1967 | */ /* The value returned by this action is */ |
---|
1968 | /* 1 if everything is OK */ |
---|
1969 | /* 0 in case of error or already bound iterator */ |
---|
1970 | /* |
---|
1971 | iterator_for_loop_start ($6); |
---|
1972 | } |
---|
1973 | lineno_labeled_stmt |
---|
1974 | { |
---|
1975 | iterator_for_loop_end ($6); |
---|
1976 | emit_line_note (input_filename, lineno); |
---|
1977 | expand_end_bindings (getdecls (), 1, 0); |
---|
1978 | $<ttype>$ = poplevel (1, 1, 0); |
---|
1979 | if (yychar == CONSTANT || yychar == STRING) |
---|
1980 | pop_momentary_nofree (); |
---|
1981 | else |
---|
1982 | pop_momentary (); |
---|
1983 | } |
---|
1984 | */ |
---|
1985 | |
---|
1986 | /* Any kind of label, including jump labels and case labels. |
---|
1987 | ANSI C accepts labels only before statements, but we allow them |
---|
1988 | also at the end of a compound statement. */ |
---|
1989 | |
---|
1990 | label: CASE expr_no_commas ':' |
---|
1991 | { register tree value = check_case_value ($2); |
---|
1992 | register tree label |
---|
1993 | = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
---|
1994 | |
---|
1995 | stmt_count++; |
---|
1996 | |
---|
1997 | if (value != error_mark_node) |
---|
1998 | { |
---|
1999 | tree duplicate; |
---|
2000 | int success = pushcase (value, convert_and_check, |
---|
2001 | label, &duplicate); |
---|
2002 | if (success == 1) |
---|
2003 | error ("case label not within a switch statement"); |
---|
2004 | else if (success == 2) |
---|
2005 | { |
---|
2006 | error ("duplicate case value"); |
---|
2007 | error_with_decl (duplicate, "this is the first entry for that value"); |
---|
2008 | } |
---|
2009 | else if (success == 3) |
---|
2010 | warning ("case value out of range"); |
---|
2011 | else if (success == 5) |
---|
2012 | error ("case label within scope of cleanup or variable array"); |
---|
2013 | } |
---|
2014 | position_after_white_space (); } |
---|
2015 | | CASE expr_no_commas ELLIPSIS expr_no_commas ':' |
---|
2016 | { register tree value1 = check_case_value ($2); |
---|
2017 | register tree value2 = check_case_value ($4); |
---|
2018 | register tree label |
---|
2019 | = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
---|
2020 | |
---|
2021 | stmt_count++; |
---|
2022 | |
---|
2023 | if (value1 != error_mark_node && value2 != error_mark_node) |
---|
2024 | { |
---|
2025 | tree duplicate; |
---|
2026 | int success = pushcase_range (value1, value2, |
---|
2027 | convert_and_check, label, |
---|
2028 | &duplicate); |
---|
2029 | if (success == 1) |
---|
2030 | error ("case label not within a switch statement"); |
---|
2031 | else if (success == 2) |
---|
2032 | { |
---|
2033 | error ("duplicate case value"); |
---|
2034 | error_with_decl (duplicate, "this is the first entry for that value"); |
---|
2035 | } |
---|
2036 | else if (success == 3) |
---|
2037 | warning ("case value out of range"); |
---|
2038 | else if (success == 4) |
---|
2039 | warning ("empty case range"); |
---|
2040 | else if (success == 5) |
---|
2041 | error ("case label within scope of cleanup or variable array"); |
---|
2042 | } |
---|
2043 | position_after_white_space (); } |
---|
2044 | | DEFAULT ':' |
---|
2045 | { |
---|
2046 | tree duplicate; |
---|
2047 | register tree label |
---|
2048 | = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
---|
2049 | int success = pushcase (NULL_TREE, 0, label, &duplicate); |
---|
2050 | stmt_count++; |
---|
2051 | if (success == 1) |
---|
2052 | error ("default label not within a switch statement"); |
---|
2053 | else if (success == 2) |
---|
2054 | { |
---|
2055 | error ("multiple default labels in one switch"); |
---|
2056 | error_with_decl (duplicate, "this is the first default label"); |
---|
2057 | } |
---|
2058 | position_after_white_space (); } |
---|
2059 | | identifier ':' |
---|
2060 | { tree label = define_label (input_filename, lineno, $1); |
---|
2061 | stmt_count++; |
---|
2062 | emit_nop (); |
---|
2063 | if (label) |
---|
2064 | expand_label (label); |
---|
2065 | position_after_white_space (); } |
---|
2066 | ; |
---|
2067 | |
---|
2068 | /* Either a type-qualifier or nothing. First thing in an `asm' statement. */ |
---|
2069 | |
---|
2070 | maybe_type_qual: |
---|
2071 | /* empty */ |
---|
2072 | { emit_line_note (input_filename, lineno); |
---|
2073 | $$ = NULL_TREE; } |
---|
2074 | | TYPE_QUAL |
---|
2075 | { emit_line_note (input_filename, lineno); } |
---|
2076 | ; |
---|
2077 | |
---|
2078 | xexpr: |
---|
2079 | /* empty */ |
---|
2080 | { $$ = NULL_TREE; } |
---|
2081 | | expr |
---|
2082 | ; |
---|
2083 | |
---|
2084 | /* These are the operands other than the first string and colon |
---|
2085 | in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */ |
---|
2086 | asm_operands: /* empty */ |
---|
2087 | { $$ = NULL_TREE; } |
---|
2088 | | nonnull_asm_operands |
---|
2089 | ; |
---|
2090 | |
---|
2091 | nonnull_asm_operands: |
---|
2092 | asm_operand |
---|
2093 | | nonnull_asm_operands ',' asm_operand |
---|
2094 | { $$ = chainon ($1, $3); } |
---|
2095 | ; |
---|
2096 | |
---|
2097 | asm_operand: |
---|
2098 | STRING '(' expr ')' |
---|
2099 | { $$ = build_tree_list ($1, $3); } |
---|
2100 | ; |
---|
2101 | |
---|
2102 | asm_clobbers: |
---|
2103 | string |
---|
2104 | { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); } |
---|
2105 | | asm_clobbers ',' string |
---|
2106 | { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); } |
---|
2107 | ; |
---|
2108 | |
---|
2109 | /* This is what appears inside the parens in a function declarator. |
---|
2110 | Its value is a list of ..._TYPE nodes. */ |
---|
2111 | parmlist: |
---|
2112 | { pushlevel (0); |
---|
2113 | clear_parm_order (); |
---|
2114 | declare_parm_level (0); } |
---|
2115 | parmlist_1 |
---|
2116 | { $$ = $2; |
---|
2117 | parmlist_tags_warning (); |
---|
2118 | poplevel (0, 0, 0); } |
---|
2119 | ; |
---|
2120 | |
---|
2121 | parmlist_1: |
---|
2122 | parmlist_2 ')' |
---|
2123 | | parms ';' |
---|
2124 | { tree parm; |
---|
2125 | if (pedantic) |
---|
2126 | pedwarn ("ANSI C forbids forward parameter declarations"); |
---|
2127 | /* Mark the forward decls as such. */ |
---|
2128 | for (parm = getdecls (); parm; parm = TREE_CHAIN (parm)) |
---|
2129 | TREE_ASM_WRITTEN (parm) = 1; |
---|
2130 | clear_parm_order (); } |
---|
2131 | parmlist_1 |
---|
2132 | { $$ = $4; } |
---|
2133 | | error ')' |
---|
2134 | { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); } |
---|
2135 | ; |
---|
2136 | |
---|
2137 | /* This is what appears inside the parens in a function declarator. |
---|
2138 | Is value is represented in the format that grokdeclarator expects. */ |
---|
2139 | parmlist_2: /* empty */ |
---|
2140 | { $$ = get_parm_info (0); } |
---|
2141 | | ELLIPSIS |
---|
2142 | { $$ = get_parm_info (0); |
---|
2143 | /* Gcc used to allow this as an extension. However, it does |
---|
2144 | not work for all targets, and thus has been disabled. |
---|
2145 | Also, since func (...) and func () are indistinguishable, |
---|
2146 | it caused problems with the code in expand_builtin which |
---|
2147 | tries to verify that BUILT_IN_NEXT_ARG is being used |
---|
2148 | correctly. */ |
---|
2149 | error ("ANSI C requires a named argument before `...'"); |
---|
2150 | } |
---|
2151 | | parms |
---|
2152 | { $$ = get_parm_info (1); } |
---|
2153 | | parms ',' ELLIPSIS |
---|
2154 | { $$ = get_parm_info (0); } |
---|
2155 | ; |
---|
2156 | |
---|
2157 | parms: |
---|
2158 | parm |
---|
2159 | { push_parm_decl ($1); } |
---|
2160 | | parms ',' parm |
---|
2161 | { push_parm_decl ($3); } |
---|
2162 | ; |
---|
2163 | |
---|
2164 | /* A single parameter declaration or parameter type name, |
---|
2165 | as found in a parmlist. */ |
---|
2166 | parm: |
---|
2167 | typed_declspecs setspecs parm_declarator maybe_attribute |
---|
2168 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2169 | $3), |
---|
2170 | build_tree_list (prefix_attributes, |
---|
2171 | $4)); |
---|
2172 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2173 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2174 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2175 | resume_momentary ($2); } |
---|
2176 | | typed_declspecs setspecs notype_declarator maybe_attribute |
---|
2177 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2178 | $3), |
---|
2179 | build_tree_list (prefix_attributes, |
---|
2180 | $4)); |
---|
2181 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2182 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2183 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2184 | resume_momentary ($2); } |
---|
2185 | | typed_declspecs setspecs absdcl maybe_attribute |
---|
2186 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2187 | $3), |
---|
2188 | build_tree_list (prefix_attributes, |
---|
2189 | $4)); |
---|
2190 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2191 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2192 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2193 | resume_momentary ($2); } |
---|
2194 | | declmods setspecs notype_declarator maybe_attribute |
---|
2195 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2196 | $3), |
---|
2197 | build_tree_list (prefix_attributes, |
---|
2198 | $4)); |
---|
2199 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2200 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2201 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2202 | resume_momentary ($2); } |
---|
2203 | |
---|
2204 | | declmods setspecs absdcl maybe_attribute |
---|
2205 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2206 | $3), |
---|
2207 | build_tree_list (prefix_attributes, |
---|
2208 | $4)); |
---|
2209 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2210 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2211 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2212 | resume_momentary ($2); } |
---|
2213 | ; |
---|
2214 | |
---|
2215 | /* This is used in a function definition |
---|
2216 | where either a parmlist or an identifier list is ok. |
---|
2217 | Its value is a list of ..._TYPE nodes or a list of identifiers. */ |
---|
2218 | parmlist_or_identifiers: |
---|
2219 | { pushlevel (0); |
---|
2220 | clear_parm_order (); |
---|
2221 | declare_parm_level (1); } |
---|
2222 | parmlist_or_identifiers_1 |
---|
2223 | { $$ = $2; |
---|
2224 | parmlist_tags_warning (); |
---|
2225 | poplevel (0, 0, 0); } |
---|
2226 | ; |
---|
2227 | |
---|
2228 | parmlist_or_identifiers_1: |
---|
2229 | parmlist_1 |
---|
2230 | | identifiers ')' |
---|
2231 | { tree t; |
---|
2232 | for (t = $1; t; t = TREE_CHAIN (t)) |
---|
2233 | if (TREE_VALUE (t) == NULL_TREE) |
---|
2234 | error ("`...' in old-style identifier list"); |
---|
2235 | $$ = tree_cons (NULL_TREE, NULL_TREE, $1); } |
---|
2236 | ; |
---|
2237 | |
---|
2238 | /* A nonempty list of identifiers. */ |
---|
2239 | identifiers: |
---|
2240 | IDENTIFIER |
---|
2241 | { $$ = build_tree_list (NULL_TREE, $1); } |
---|
2242 | | identifiers ',' IDENTIFIER |
---|
2243 | { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); } |
---|
2244 | ; |
---|
2245 | |
---|
2246 | /* A nonempty list of identifiers, including typenames. */ |
---|
2247 | identifiers_or_typenames: |
---|
2248 | identifier |
---|
2249 | { $$ = build_tree_list (NULL_TREE, $1); } |
---|
2250 | | identifiers_or_typenames ',' identifier |
---|
2251 | { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); } |
---|
2252 | ; |
---|
2253 | |
---|
2254 | ifobjc |
---|
2255 | /* Objective-C productions. */ |
---|
2256 | |
---|
2257 | objcdef: |
---|
2258 | classdef |
---|
2259 | | classdecl |
---|
2260 | | aliasdecl |
---|
2261 | | protocoldef |
---|
2262 | | methoddef |
---|
2263 | | END |
---|
2264 | { |
---|
2265 | if (objc_implementation_context) |
---|
2266 | { |
---|
2267 | finish_class (objc_implementation_context); |
---|
2268 | objc_ivar_chain = NULL_TREE; |
---|
2269 | objc_implementation_context = NULL_TREE; |
---|
2270 | } |
---|
2271 | else |
---|
2272 | warning ("`@end' must appear in an implementation context"); |
---|
2273 | } |
---|
2274 | ; |
---|
2275 | |
---|
2276 | /* A nonempty list of identifiers. */ |
---|
2277 | identifier_list: |
---|
2278 | identifier |
---|
2279 | { $$ = build_tree_list (NULL_TREE, $1); } |
---|
2280 | | identifier_list ',' identifier |
---|
2281 | { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); } |
---|
2282 | ; |
---|
2283 | |
---|
2284 | classdecl: |
---|
2285 | CLASS identifier_list ';' |
---|
2286 | { |
---|
2287 | objc_declare_class ($2); |
---|
2288 | } |
---|
2289 | |
---|
2290 | aliasdecl: |
---|
2291 | ALIAS identifier identifier ';' |
---|
2292 | { |
---|
2293 | objc_declare_alias ($2, $3); |
---|
2294 | } |
---|
2295 | |
---|
2296 | classdef: |
---|
2297 | INTERFACE identifier protocolrefs '{' |
---|
2298 | { |
---|
2299 | objc_interface_context = objc_ivar_context |
---|
2300 | = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3); |
---|
2301 | objc_public_flag = 0; |
---|
2302 | } |
---|
2303 | ivar_decl_list '}' |
---|
2304 | { |
---|
2305 | continue_class (objc_interface_context); |
---|
2306 | } |
---|
2307 | methodprotolist |
---|
2308 | END |
---|
2309 | { |
---|
2310 | finish_class (objc_interface_context); |
---|
2311 | objc_interface_context = NULL_TREE; |
---|
2312 | } |
---|
2313 | |
---|
2314 | | INTERFACE identifier protocolrefs |
---|
2315 | { |
---|
2316 | objc_interface_context |
---|
2317 | = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3); |
---|
2318 | continue_class (objc_interface_context); |
---|
2319 | } |
---|
2320 | methodprotolist |
---|
2321 | END |
---|
2322 | { |
---|
2323 | finish_class (objc_interface_context); |
---|
2324 | objc_interface_context = NULL_TREE; |
---|
2325 | } |
---|
2326 | |
---|
2327 | | INTERFACE identifier ':' identifier protocolrefs '{' |
---|
2328 | { |
---|
2329 | objc_interface_context = objc_ivar_context |
---|
2330 | = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5); |
---|
2331 | objc_public_flag = 0; |
---|
2332 | } |
---|
2333 | ivar_decl_list '}' |
---|
2334 | { |
---|
2335 | continue_class (objc_interface_context); |
---|
2336 | } |
---|
2337 | methodprotolist |
---|
2338 | END |
---|
2339 | { |
---|
2340 | finish_class (objc_interface_context); |
---|
2341 | objc_interface_context = NULL_TREE; |
---|
2342 | } |
---|
2343 | |
---|
2344 | | INTERFACE identifier ':' identifier protocolrefs |
---|
2345 | { |
---|
2346 | objc_interface_context |
---|
2347 | = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5); |
---|
2348 | continue_class (objc_interface_context); |
---|
2349 | } |
---|
2350 | methodprotolist |
---|
2351 | END |
---|
2352 | { |
---|
2353 | finish_class (objc_interface_context); |
---|
2354 | objc_interface_context = NULL_TREE; |
---|
2355 | } |
---|
2356 | |
---|
2357 | | IMPLEMENTATION identifier '{' |
---|
2358 | { |
---|
2359 | objc_implementation_context = objc_ivar_context |
---|
2360 | = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE); |
---|
2361 | objc_public_flag = 0; |
---|
2362 | } |
---|
2363 | ivar_decl_list '}' |
---|
2364 | { |
---|
2365 | objc_ivar_chain |
---|
2366 | = continue_class (objc_implementation_context); |
---|
2367 | } |
---|
2368 | |
---|
2369 | | IMPLEMENTATION identifier |
---|
2370 | { |
---|
2371 | objc_implementation_context |
---|
2372 | = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE); |
---|
2373 | objc_ivar_chain |
---|
2374 | = continue_class (objc_implementation_context); |
---|
2375 | } |
---|
2376 | |
---|
2377 | | IMPLEMENTATION identifier ':' identifier '{' |
---|
2378 | { |
---|
2379 | objc_implementation_context = objc_ivar_context |
---|
2380 | = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE); |
---|
2381 | objc_public_flag = 0; |
---|
2382 | } |
---|
2383 | ivar_decl_list '}' |
---|
2384 | { |
---|
2385 | objc_ivar_chain |
---|
2386 | = continue_class (objc_implementation_context); |
---|
2387 | } |
---|
2388 | |
---|
2389 | | IMPLEMENTATION identifier ':' identifier |
---|
2390 | { |
---|
2391 | objc_implementation_context |
---|
2392 | = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE); |
---|
2393 | objc_ivar_chain |
---|
2394 | = continue_class (objc_implementation_context); |
---|
2395 | } |
---|
2396 | |
---|
2397 | | INTERFACE identifier '(' identifier ')' protocolrefs |
---|
2398 | { |
---|
2399 | objc_interface_context |
---|
2400 | = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6); |
---|
2401 | continue_class (objc_interface_context); |
---|
2402 | } |
---|
2403 | methodprotolist |
---|
2404 | END |
---|
2405 | { |
---|
2406 | finish_class (objc_interface_context); |
---|
2407 | objc_interface_context = NULL_TREE; |
---|
2408 | } |
---|
2409 | |
---|
2410 | | IMPLEMENTATION identifier '(' identifier ')' |
---|
2411 | { |
---|
2412 | objc_implementation_context |
---|
2413 | = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE); |
---|
2414 | objc_ivar_chain |
---|
2415 | = continue_class (objc_implementation_context); |
---|
2416 | } |
---|
2417 | ; |
---|
2418 | |
---|
2419 | protocoldef: |
---|
2420 | PROTOCOL identifier protocolrefs |
---|
2421 | { |
---|
2422 | remember_protocol_qualifiers (); |
---|
2423 | objc_interface_context |
---|
2424 | = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3); |
---|
2425 | } |
---|
2426 | methodprotolist END |
---|
2427 | { |
---|
2428 | forget_protocol_qualifiers(); |
---|
2429 | finish_protocol(objc_interface_context); |
---|
2430 | objc_interface_context = NULL_TREE; |
---|
2431 | } |
---|
2432 | ; |
---|
2433 | |
---|
2434 | protocolrefs: |
---|
2435 | /* empty */ |
---|
2436 | { |
---|
2437 | $$ = NULL_TREE; |
---|
2438 | } |
---|
2439 | | ARITHCOMPARE identifier_list ARITHCOMPARE |
---|
2440 | { |
---|
2441 | if ($1 == LT_EXPR && $3 == GT_EXPR) |
---|
2442 | $$ = $2; |
---|
2443 | else |
---|
2444 | YYERROR1; |
---|
2445 | } |
---|
2446 | ; |
---|
2447 | |
---|
2448 | ivar_decl_list: |
---|
2449 | ivar_decl_list visibility_spec ivar_decls |
---|
2450 | | ivar_decls |
---|
2451 | ; |
---|
2452 | |
---|
2453 | visibility_spec: |
---|
2454 | PRIVATE { objc_public_flag = 2; } |
---|
2455 | | PROTECTED { objc_public_flag = 0; } |
---|
2456 | | PUBLIC { objc_public_flag = 1; } |
---|
2457 | ; |
---|
2458 | |
---|
2459 | ivar_decls: |
---|
2460 | /* empty */ |
---|
2461 | { |
---|
2462 | $$ = NULL_TREE; |
---|
2463 | } |
---|
2464 | | ivar_decls ivar_decl ';' |
---|
2465 | | ivar_decls ';' |
---|
2466 | { |
---|
2467 | if (pedantic) |
---|
2468 | pedwarn ("extra semicolon in struct or union specified"); |
---|
2469 | } |
---|
2470 | ; |
---|
2471 | |
---|
2472 | |
---|
2473 | /* There is a shift-reduce conflict here, because `components' may |
---|
2474 | start with a `typename'. It happens that shifting (the default resolution) |
---|
2475 | does the right thing, because it treats the `typename' as part of |
---|
2476 | a `typed_typespecs'. |
---|
2477 | |
---|
2478 | It is possible that this same technique would allow the distinction |
---|
2479 | between `notype_initdecls' and `initdecls' to be eliminated. |
---|
2480 | But I am being cautious and not trying it. */ |
---|
2481 | |
---|
2482 | ivar_decl: |
---|
2483 | typed_typespecs setspecs ivars |
---|
2484 | { $$ = $3; |
---|
2485 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2486 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2487 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2488 | resume_momentary ($2); } |
---|
2489 | | nonempty_type_quals setspecs ivars |
---|
2490 | { $$ = $3; |
---|
2491 | current_declspecs = TREE_VALUE (declspec_stack); |
---|
2492 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2493 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2494 | resume_momentary ($2); } |
---|
2495 | | error |
---|
2496 | { $$ = NULL_TREE; } |
---|
2497 | ; |
---|
2498 | |
---|
2499 | ivars: |
---|
2500 | /* empty */ |
---|
2501 | { $$ = NULL_TREE; } |
---|
2502 | | ivar_declarator |
---|
2503 | | ivars ',' ivar_declarator |
---|
2504 | ; |
---|
2505 | |
---|
2506 | ivar_declarator: |
---|
2507 | declarator |
---|
2508 | { |
---|
2509 | $$ = add_instance_variable (objc_ivar_context, |
---|
2510 | objc_public_flag, |
---|
2511 | $1, current_declspecs, |
---|
2512 | NULL_TREE); |
---|
2513 | } |
---|
2514 | | declarator ':' expr_no_commas |
---|
2515 | { |
---|
2516 | $$ = add_instance_variable (objc_ivar_context, |
---|
2517 | objc_public_flag, |
---|
2518 | $1, current_declspecs, $3); |
---|
2519 | } |
---|
2520 | | ':' expr_no_commas |
---|
2521 | { |
---|
2522 | $$ = add_instance_variable (objc_ivar_context, |
---|
2523 | objc_public_flag, |
---|
2524 | NULL_TREE, |
---|
2525 | current_declspecs, $2); |
---|
2526 | } |
---|
2527 | ; |
---|
2528 | |
---|
2529 | methoddef: |
---|
2530 | '+' |
---|
2531 | { |
---|
2532 | remember_protocol_qualifiers (); |
---|
2533 | if (objc_implementation_context) |
---|
2534 | objc_inherit_code = CLASS_METHOD_DECL; |
---|
2535 | else |
---|
2536 | fatal ("method definition not in class context"); |
---|
2537 | } |
---|
2538 | methoddecl |
---|
2539 | { |
---|
2540 | forget_protocol_qualifiers (); |
---|
2541 | add_class_method (objc_implementation_context, $3); |
---|
2542 | start_method_def ($3); |
---|
2543 | objc_method_context = $3; |
---|
2544 | } |
---|
2545 | optarglist |
---|
2546 | { |
---|
2547 | continue_method_def (); |
---|
2548 | } |
---|
2549 | compstmt_or_error |
---|
2550 | { |
---|
2551 | finish_method_def (); |
---|
2552 | objc_method_context = NULL_TREE; |
---|
2553 | } |
---|
2554 | |
---|
2555 | | '-' |
---|
2556 | { |
---|
2557 | remember_protocol_qualifiers (); |
---|
2558 | if (objc_implementation_context) |
---|
2559 | objc_inherit_code = INSTANCE_METHOD_DECL; |
---|
2560 | else |
---|
2561 | fatal ("method definition not in class context"); |
---|
2562 | } |
---|
2563 | methoddecl |
---|
2564 | { |
---|
2565 | forget_protocol_qualifiers (); |
---|
2566 | add_instance_method (objc_implementation_context, $3); |
---|
2567 | start_method_def ($3); |
---|
2568 | objc_method_context = $3; |
---|
2569 | } |
---|
2570 | optarglist |
---|
2571 | { |
---|
2572 | continue_method_def (); |
---|
2573 | } |
---|
2574 | compstmt_or_error |
---|
2575 | { |
---|
2576 | finish_method_def (); |
---|
2577 | objc_method_context = NULL_TREE; |
---|
2578 | } |
---|
2579 | ; |
---|
2580 | |
---|
2581 | /* the reason for the strange actions in this rule |
---|
2582 | is so that notype_initdecls when reached via datadef |
---|
2583 | can find a valid list of type and sc specs in $0. */ |
---|
2584 | |
---|
2585 | methodprotolist: |
---|
2586 | /* empty */ |
---|
2587 | | {$<ttype>$ = NULL_TREE; } methodprotolist2 |
---|
2588 | ; |
---|
2589 | |
---|
2590 | methodprotolist2: /* eliminates a shift/reduce conflict */ |
---|
2591 | methodproto |
---|
2592 | | datadef |
---|
2593 | | methodprotolist2 methodproto |
---|
2594 | | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef |
---|
2595 | ; |
---|
2596 | |
---|
2597 | semi_or_error: |
---|
2598 | ';' |
---|
2599 | | error |
---|
2600 | ; |
---|
2601 | |
---|
2602 | methodproto: |
---|
2603 | '+' |
---|
2604 | { |
---|
2605 | objc_inherit_code = CLASS_METHOD_DECL; |
---|
2606 | } |
---|
2607 | methoddecl |
---|
2608 | { |
---|
2609 | add_class_method (objc_interface_context, $3); |
---|
2610 | } |
---|
2611 | semi_or_error |
---|
2612 | |
---|
2613 | | '-' |
---|
2614 | { |
---|
2615 | objc_inherit_code = INSTANCE_METHOD_DECL; |
---|
2616 | } |
---|
2617 | methoddecl |
---|
2618 | { |
---|
2619 | add_instance_method (objc_interface_context, $3); |
---|
2620 | } |
---|
2621 | semi_or_error |
---|
2622 | ; |
---|
2623 | |
---|
2624 | methoddecl: |
---|
2625 | '(' typename ')' unaryselector |
---|
2626 | { |
---|
2627 | $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE); |
---|
2628 | } |
---|
2629 | |
---|
2630 | | unaryselector |
---|
2631 | { |
---|
2632 | $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE); |
---|
2633 | } |
---|
2634 | |
---|
2635 | | '(' typename ')' keywordselector optparmlist |
---|
2636 | { |
---|
2637 | $$ = build_method_decl (objc_inherit_code, $2, $4, $5); |
---|
2638 | } |
---|
2639 | |
---|
2640 | | keywordselector optparmlist |
---|
2641 | { |
---|
2642 | $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2); |
---|
2643 | } |
---|
2644 | ; |
---|
2645 | |
---|
2646 | /* "optarglist" assumes that start_method_def has already been called... |
---|
2647 | if it is not, the "xdecls" will not be placed in the proper scope */ |
---|
2648 | |
---|
2649 | optarglist: |
---|
2650 | /* empty */ |
---|
2651 | | ';' myxdecls |
---|
2652 | ; |
---|
2653 | |
---|
2654 | /* to get around the following situation: "int foo (int a) int b; {}" that |
---|
2655 | is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */ |
---|
2656 | |
---|
2657 | myxdecls: |
---|
2658 | /* empty */ |
---|
2659 | | mydecls |
---|
2660 | ; |
---|
2661 | |
---|
2662 | mydecls: |
---|
2663 | mydecl |
---|
2664 | | errstmt |
---|
2665 | | mydecls mydecl |
---|
2666 | | mydecl errstmt |
---|
2667 | ; |
---|
2668 | |
---|
2669 | mydecl: |
---|
2670 | typed_declspecs setspecs myparms ';' |
---|
2671 | { current_declspecs = TREE_VALUE (declspec_stack); |
---|
2672 | prefix_attributes = TREE_PURPOSE (declspec_stack); |
---|
2673 | declspec_stack = TREE_CHAIN (declspec_stack); |
---|
2674 | resume_momentary ($2); } |
---|
2675 | | typed_declspecs ';' |
---|
2676 | { shadow_tag ($1); } |
---|
2677 | | declmods ';' |
---|
2678 | { pedwarn ("empty declaration"); } |
---|
2679 | ; |
---|
2680 | |
---|
2681 | myparms: |
---|
2682 | myparm |
---|
2683 | { push_parm_decl ($1); } |
---|
2684 | | myparms ',' myparm |
---|
2685 | { push_parm_decl ($3); } |
---|
2686 | ; |
---|
2687 | |
---|
2688 | /* A single parameter declaration or parameter type name, |
---|
2689 | as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */ |
---|
2690 | |
---|
2691 | myparm: |
---|
2692 | parm_declarator maybe_attribute |
---|
2693 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2694 | $1), |
---|
2695 | build_tree_list (prefix_attributes, |
---|
2696 | $2)); } |
---|
2697 | | notype_declarator maybe_attribute |
---|
2698 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2699 | $1), |
---|
2700 | build_tree_list (prefix_attributes, |
---|
2701 | $2)); } |
---|
2702 | | absdcl maybe_attribute |
---|
2703 | { $$ = build_tree_list (build_tree_list (current_declspecs, |
---|
2704 | $1), |
---|
2705 | build_tree_list (prefix_attributes, |
---|
2706 | $2)); } |
---|
2707 | ; |
---|
2708 | |
---|
2709 | optparmlist: |
---|
2710 | /* empty */ |
---|
2711 | { |
---|
2712 | $$ = NULL_TREE; |
---|
2713 | } |
---|
2714 | | ',' ELLIPSIS |
---|
2715 | { |
---|
2716 | /* oh what a kludge! */ |
---|
2717 | $$ = (tree)1; |
---|
2718 | } |
---|
2719 | | ',' |
---|
2720 | { |
---|
2721 | pushlevel (0); |
---|
2722 | } |
---|
2723 | parmlist_2 |
---|
2724 | { |
---|
2725 | /* returns a tree list node generated by get_parm_info */ |
---|
2726 | $$ = $3; |
---|
2727 | poplevel (0, 0, 0); |
---|
2728 | } |
---|
2729 | ; |
---|
2730 | |
---|
2731 | unaryselector: |
---|
2732 | selector |
---|
2733 | ; |
---|
2734 | |
---|
2735 | keywordselector: |
---|
2736 | keyworddecl |
---|
2737 | |
---|
2738 | | keywordselector keyworddecl |
---|
2739 | { |
---|
2740 | $$ = chainon ($1, $2); |
---|
2741 | } |
---|
2742 | ; |
---|
2743 | |
---|
2744 | selector: |
---|
2745 | IDENTIFIER |
---|
2746 | | TYPENAME |
---|
2747 | | OBJECTNAME |
---|
2748 | | reservedwords |
---|
2749 | ; |
---|
2750 | |
---|
2751 | reservedwords: |
---|
2752 | ENUM { $$ = get_identifier (token_buffer); } |
---|
2753 | | STRUCT { $$ = get_identifier (token_buffer); } |
---|
2754 | | UNION { $$ = get_identifier (token_buffer); } |
---|
2755 | | IF { $$ = get_identifier (token_buffer); } |
---|
2756 | | ELSE { $$ = get_identifier (token_buffer); } |
---|
2757 | | WHILE { $$ = get_identifier (token_buffer); } |
---|
2758 | | DO { $$ = get_identifier (token_buffer); } |
---|
2759 | | FOR { $$ = get_identifier (token_buffer); } |
---|
2760 | | SWITCH { $$ = get_identifier (token_buffer); } |
---|
2761 | | CASE { $$ = get_identifier (token_buffer); } |
---|
2762 | | DEFAULT { $$ = get_identifier (token_buffer); } |
---|
2763 | | BREAK { $$ = get_identifier (token_buffer); } |
---|
2764 | | CONTINUE { $$ = get_identifier (token_buffer); } |
---|
2765 | | RETURN { $$ = get_identifier (token_buffer); } |
---|
2766 | | GOTO { $$ = get_identifier (token_buffer); } |
---|
2767 | | ASM_KEYWORD { $$ = get_identifier (token_buffer); } |
---|
2768 | | SIZEOF { $$ = get_identifier (token_buffer); } |
---|
2769 | | TYPEOF { $$ = get_identifier (token_buffer); } |
---|
2770 | | ALIGNOF { $$ = get_identifier (token_buffer); } |
---|
2771 | | TYPESPEC | TYPE_QUAL |
---|
2772 | ; |
---|
2773 | |
---|
2774 | keyworddecl: |
---|
2775 | selector ':' '(' typename ')' identifier |
---|
2776 | { |
---|
2777 | $$ = build_keyword_decl ($1, $4, $6); |
---|
2778 | } |
---|
2779 | |
---|
2780 | | selector ':' identifier |
---|
2781 | { |
---|
2782 | $$ = build_keyword_decl ($1, NULL_TREE, $3); |
---|
2783 | } |
---|
2784 | |
---|
2785 | | ':' '(' typename ')' identifier |
---|
2786 | { |
---|
2787 | $$ = build_keyword_decl (NULL_TREE, $3, $5); |
---|
2788 | } |
---|
2789 | |
---|
2790 | | ':' identifier |
---|
2791 | { |
---|
2792 | $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2); |
---|
2793 | } |
---|
2794 | ; |
---|
2795 | |
---|
2796 | messageargs: |
---|
2797 | selector |
---|
2798 | | keywordarglist |
---|
2799 | ; |
---|
2800 | |
---|
2801 | keywordarglist: |
---|
2802 | keywordarg |
---|
2803 | | keywordarglist keywordarg |
---|
2804 | { |
---|
2805 | $$ = chainon ($1, $2); |
---|
2806 | } |
---|
2807 | ; |
---|
2808 | |
---|
2809 | |
---|
2810 | keywordexpr: |
---|
2811 | nonnull_exprlist |
---|
2812 | { |
---|
2813 | if (TREE_CHAIN ($1) == NULL_TREE) |
---|
2814 | /* just return the expr., remove a level of indirection */ |
---|
2815 | $$ = TREE_VALUE ($1); |
---|
2816 | else |
---|
2817 | /* we have a comma expr., we will collapse later */ |
---|
2818 | $$ = $1; |
---|
2819 | } |
---|
2820 | ; |
---|
2821 | |
---|
2822 | keywordarg: |
---|
2823 | selector ':' keywordexpr |
---|
2824 | { |
---|
2825 | $$ = build_tree_list ($1, $3); |
---|
2826 | } |
---|
2827 | | ':' keywordexpr |
---|
2828 | { |
---|
2829 | $$ = build_tree_list (NULL_TREE, $2); |
---|
2830 | } |
---|
2831 | ; |
---|
2832 | |
---|
2833 | receiver: |
---|
2834 | expr |
---|
2835 | | CLASSNAME |
---|
2836 | { |
---|
2837 | $$ = get_class_reference ($1); |
---|
2838 | } |
---|
2839 | ; |
---|
2840 | |
---|
2841 | objcmessageexpr: |
---|
2842 | '[' |
---|
2843 | { objc_receiver_context = 1; } |
---|
2844 | receiver |
---|
2845 | { objc_receiver_context = 0; } |
---|
2846 | messageargs ']' |
---|
2847 | { |
---|
2848 | $$ = build_tree_list ($3, $5); |
---|
2849 | } |
---|
2850 | ; |
---|
2851 | |
---|
2852 | selectorarg: |
---|
2853 | selector |
---|
2854 | | keywordnamelist |
---|
2855 | ; |
---|
2856 | |
---|
2857 | keywordnamelist: |
---|
2858 | keywordname |
---|
2859 | | keywordnamelist keywordname |
---|
2860 | { |
---|
2861 | $$ = chainon ($1, $2); |
---|
2862 | } |
---|
2863 | ; |
---|
2864 | |
---|
2865 | keywordname: |
---|
2866 | selector ':' |
---|
2867 | { |
---|
2868 | $$ = build_tree_list ($1, NULL_TREE); |
---|
2869 | } |
---|
2870 | | ':' |
---|
2871 | { |
---|
2872 | $$ = build_tree_list (NULL_TREE, NULL_TREE); |
---|
2873 | } |
---|
2874 | ; |
---|
2875 | |
---|
2876 | objcselectorexpr: |
---|
2877 | SELECTOR '(' selectorarg ')' |
---|
2878 | { |
---|
2879 | $$ = $3; |
---|
2880 | } |
---|
2881 | ; |
---|
2882 | |
---|
2883 | objcprotocolexpr: |
---|
2884 | PROTOCOL '(' identifier ')' |
---|
2885 | { |
---|
2886 | $$ = $3; |
---|
2887 | } |
---|
2888 | ; |
---|
2889 | |
---|
2890 | /* extension to support C-structures in the archiver */ |
---|
2891 | |
---|
2892 | objcencodeexpr: |
---|
2893 | ENCODE '(' typename ')' |
---|
2894 | { |
---|
2895 | $$ = groktypename ($3); |
---|
2896 | } |
---|
2897 | ; |
---|
2898 | |
---|
2899 | end ifobjc |
---|
2900 | %% |
---|