1 | /* -*- Mode: C -*- |
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2 | * |
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3 | * CForall Grammar Version 1.0, Copyright (C) Peter A. Buhr 2001 -- Permission is granted to copy this |
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4 | * grammar and to use it within software systems. THIS GRAMMAR IS PROVIDED "AS IS" AND WITHOUT |
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5 | * ANY EXPRESS OR IMPLIED WARRANTIES. |
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6 | * |
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7 | * cfa.y -- |
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8 | * |
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9 | * Author : Peter A. Buhr |
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10 | * Created On : Sat Sep 1 20:22:55 2001 |
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11 | * Last Modified By : Peter A. Buhr |
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12 | * Last Modified On : Sun Nov 9 22:45:42 2014 |
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13 | * Update Count : 881 |
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14 | */ |
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15 | |
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16 | /* This grammar is based on the ANSI99 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the |
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17 | C grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts |
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18 | have been copied, important changes have been made in all sections; these changes are sufficient to |
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19 | constitute a new grammar. In particular, this grammar attempts to be more syntactically precise, i.e., it |
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20 | parses less incorrect language syntax that must be subsequently rejected by semantic checks. Nevertheless, |
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21 | there are still several semantic checks required and many are noted in the grammar. Finally, the grammar |
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22 | is extended with GCC and CFA language extensions. */ |
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23 | |
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24 | /* Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got |
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25 | stuck with the grammar. */ |
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26 | |
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27 | /* The root language for this grammar is ANSI99 C. All of ANSI99 is parsed, except for: |
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28 | |
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29 | 1. designation with '=' (use ':' instead) |
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30 | |
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31 | Most of the syntactic extensions from ANSI90 to ANSI99 C are marked with the comment "ANSI99". This grammar |
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32 | also has two levels of extensions. The first extensions cover most of the GCC C extensions, except for: |
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33 | |
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34 | 1. nested functions |
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35 | 2. generalized lvalues |
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36 | 3. designation with and without '=' (use ':' instead) |
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37 | 4. attributes not allowed in parenthesis of declarator |
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38 | |
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39 | All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for |
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40 | Cforall (CFA), which fixes several of C's outstanding problems and extends C with many modern language |
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41 | concepts. All of the syntactic extensions for CFA C are marked with the comment "CFA". As noted above, |
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42 | there is one unreconcileable parsing problem between ANSI99 and CFA with respect to designators; this is |
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43 | discussed in detail before the "designation" grammar rule. */ |
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44 | |
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45 | %{ |
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46 | #define YYDEBUG_LEXER_TEXT (yylval) /* lexer loads this up each time */ |
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47 | #define YYDEBUG 1 /* get the pretty debugging code to compile*/ |
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48 | |
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49 | #undef __GNUC_MINOR__ |
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50 | |
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51 | #include <cstdio> |
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52 | #include <stack> |
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53 | #include "TypedefTable.h" |
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54 | #include "lex.h" |
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55 | #include "ParseNode.h" |
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56 | #include "LinkageSpec.h" |
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57 | |
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58 | DeclarationNode *theTree = 0; /* the resulting parse tree */ |
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59 | LinkageSpec::Type linkage = LinkageSpec::Cforall; |
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60 | std::stack< LinkageSpec::Type > linkageStack; |
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61 | TypedefTable typedefTable; |
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62 | %} |
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63 | |
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64 | /************************* TERMINAL TOKENS ********************************/ |
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65 | |
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66 | /* keywords */ |
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67 | %token TYPEDEF |
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68 | %token AUTO EXTERN REGISTER STATIC |
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69 | %token INLINE /* ANSI99 */ |
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70 | %token FORTRAN /* ANSI99, extension ISO/IEC 9899:1999 Section J.5.9(1) */ |
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71 | %token CONST VOLATILE |
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72 | %token RESTRICT /* ANSI99 */ |
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73 | %token FORALL LVALUE /* CFA */ |
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74 | %token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED |
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75 | %token BOOL COMPLEX IMAGINARY /* ANSI99 */ |
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76 | %token TYPEOF LABEL /* GCC */ |
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77 | %token ENUM STRUCT UNION |
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78 | %token TYPE FTYPE DTYPE CONTEXT /* CFA */ |
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79 | %token SIZEOF |
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80 | %token ALIGNOF ATTRIBUTE EXTENSION /* GCC */ |
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81 | %token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN |
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82 | %token CHOOSE FALLTHRU TRY CATCH FINALLY THROW /* CFA */ |
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83 | %token ASM /* ANSI99, extension ISO/IEC 9899:1999 Section J.5.10(1) */ |
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84 | |
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85 | /* names and constants: lexer differentiates between identifier and typedef names */ |
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86 | %token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname |
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87 | %token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname |
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88 | %token<tok> INTEGERconstant FLOATINGconstant CHARACTERconstant STRINGliteral |
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89 | %token<tok> ZERO ONE /* CFA */ |
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90 | |
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91 | /* multi-character operators */ |
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92 | %token ARROW /* -> */ |
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93 | %token ICR DECR /* ++ -- */ |
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94 | %token LS RS /* << >> */ |
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95 | %token LE GE EQ NE /* <= >= == != */ |
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96 | %token ANDAND OROR /* && || */ |
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97 | %token ELLIPSIS /* ... */ |
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98 | |
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99 | %token MULTassign DIVassign MODassign /* *= /= %= */ |
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100 | %token PLUSassign MINUSassign /* += -= */ |
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101 | %token LSassign RSassign /* <<= >>= */ |
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102 | %token ANDassign ERassign ORassign /* &= ^= |= */ |
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103 | |
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104 | /* Types declaration */ |
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105 | %union |
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106 | { |
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107 | Token tok; |
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108 | ParseNode *pn; |
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109 | ExpressionNode *en; |
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110 | DeclarationNode *decl; |
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111 | DeclarationNode::TyCon aggKey; |
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112 | DeclarationNode::TypeClass tclass; |
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113 | StatementNode *sn; |
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114 | ConstantNode *constant; |
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115 | InitializerNode *in; |
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116 | } |
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117 | |
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118 | %type<tok> zero_one identifier no_attr_identifier no_01_identifier |
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119 | %type<tok> identifier_or_typedef_name no_attr_identifier_or_typedef_name no_01_identifier_or_typedef_name |
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120 | %type<constant> string_literal_list |
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121 | |
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122 | /* expressions */ |
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123 | %type<constant> constant |
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124 | %type<en> tuple tuple_expression_list |
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125 | %type<en> unary_operator assignment_operator |
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126 | %type<en> primary_expression postfix_expression unary_expression |
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127 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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128 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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129 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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130 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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131 | %type<en> comma_expression comma_expression_opt |
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132 | %type<en> argument_expression_list argument_expression for_control_expression assignment_opt |
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133 | %type<en> subrange |
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134 | |
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135 | /* statements */ |
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136 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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137 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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138 | %type<sn> fall_through_opt fall_through |
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139 | %type<sn> statement statement_list |
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140 | %type<sn> block_item_list block_item |
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141 | %type<sn> case_clause |
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142 | %type<en> case_value case_value_list |
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143 | %type<sn> case_label case_label_list |
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144 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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145 | %type<pn> handler_list handler_clause finally_clause |
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146 | |
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147 | /* declarations */ |
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148 | %type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array |
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149 | %type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function |
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150 | %type<decl> abstract_parameter_ptr abstract_ptr |
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151 | |
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152 | %type<aggKey> aggregate_key |
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153 | %type<decl> aggregate_name |
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154 | |
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155 | %type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension |
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156 | |
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157 | %type<decl> assertion assertion_list_opt |
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158 | |
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159 | %type<en> bit_subrange_size_opt bit_subrange_size |
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160 | |
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161 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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162 | |
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163 | %type<decl> context_declaration context_declaration_list context_declaring_list context_specifier |
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164 | |
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165 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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166 | %type<decl> declaration_specifier declarator declaring_list |
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167 | |
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168 | %type<decl> elaborated_type_name |
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169 | |
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170 | %type<decl> enumerator_list enum_name |
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171 | %type<en> enumerator_value_opt |
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172 | |
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173 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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174 | |
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175 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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176 | %type<en> field field_list |
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177 | |
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178 | %type<decl> function_array function_declarator function_definition function_no_ptr function_ptr |
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179 | |
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180 | %type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function |
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181 | %type<decl> identifier_parameter_ptr identifier_list |
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182 | |
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183 | %type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple |
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184 | %type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list |
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185 | %type<decl> new_abstract_ptr new_abstract_tuple |
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186 | |
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187 | %type<decl> new_array_parameter_1st_dimension |
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188 | |
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189 | %type<decl> new_context_declaring_list new_declaration new_field_declaring_list |
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190 | %type<decl> new_function_declaration new_function_return new_function_specifier |
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191 | |
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192 | %type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple |
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193 | %type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr |
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194 | |
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195 | %type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt |
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196 | |
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197 | %type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier |
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198 | |
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199 | %type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array |
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200 | %type<decl> old_function_declarator old_function_no_ptr old_function_ptr |
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201 | |
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202 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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203 | %type<decl> parameter_type_list_opt |
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204 | |
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205 | %type<decl> paren_identifier paren_typedef |
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206 | |
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207 | %type<decl> storage_class storage_class_name storage_class_list |
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208 | |
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209 | %type<decl> sue_declaration_specifier sue_type_specifier |
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210 | |
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211 | %type<tclass> type_class |
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212 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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213 | |
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214 | %type<decl> typedef typedef_array typedef_declaration typedef_declaration_specifier typedef_expression |
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215 | %type<decl> typedef_function typedef_parameter_array typedef_parameter_function typedef_parameter_ptr |
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216 | %type<decl> typedef_parameter_redeclarator typedef_ptr typedef_redeclarator typedef_type_specifier |
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217 | %type<decl> typegen_declaration_specifier typegen_type_specifier |
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218 | |
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219 | %type<decl> type_name type_name_no_function |
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220 | %type<decl> type_parameter type_parameter_list |
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221 | |
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222 | %type<en> type_name_list |
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223 | |
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224 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier |
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225 | |
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226 | %type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function |
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227 | %type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr |
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228 | |
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229 | /* initializers */ |
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230 | %type<in> initializer initializer_list initializer_opt |
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231 | |
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232 | /* designators */ |
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233 | %type<en> designator designator_list designation |
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234 | |
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235 | |
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236 | /* Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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237 | is ambiguous: |
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238 | .---------. matches IF '(' comma_expression ')' statement |
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239 | if ( C ) S1 else S2 |
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240 | `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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241 | |
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242 | %nonassoc THEN /* rule precedence for IF '(' comma_expression ')' statement */ |
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243 | %nonassoc ELSE /* token precedence for start of else clause in IF statement */ |
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244 | |
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245 | %start translation_unit /* parse-tree root */ |
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246 | |
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247 | %% |
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248 | /************************* Namespace Management ********************************/ |
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249 | |
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250 | /* The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal |
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251 | symbols "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a |
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252 | purely context-free grammar, such a grammar would obscure the relationship between syntactic and semantic |
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253 | constructs. Hence, this grammar uses the ANSI style. |
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254 | |
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255 | Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, |
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256 | those introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. |
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257 | This latter type name creates a third class of identifiers that must be distinguished by the scanner. |
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258 | |
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259 | Since the scanner cannot distinguish among the different classes of identifiers without some context |
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260 | information, it accesses a data structure (the TypedefTable) to allow classification of an identifier that |
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261 | it has just read. Semantic actions during the parser update this data structure when the class of |
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262 | identifiers change. |
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263 | |
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264 | Because the Cforall language is block-scoped, there is the possibility that an identifier can change its |
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265 | class in a local scope; it must revert to its original class at the end of the block. Since type names can |
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266 | be local to a particular declaration, each declaration is itself a scope. This requires distinguishing |
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267 | between type names that are local to the current declaration scope and those that persist past the end of |
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268 | the declaration (i.e., names defined in "typedef" or "type" declarations). |
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269 | |
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270 | The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and |
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271 | closing of scopes. Every push must have a matching pop, although it is regrettable the matching pairs do |
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272 | not always occur within the same rule. These non-terminals may appear in more contexts than strictly |
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273 | necessary from a semantic point of view. Unfortunately, these extra rules are necessary to prevent parsing |
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274 | conflicts -- the parser may not have enough context and look-ahead information to decide whether a new |
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275 | scope is necessary, so the effect of these extra rules is to open a new scope unconditionally. As the |
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276 | grammar evolves, it may be neccesary to add or move around "push" and "pop" nonterminals to resolve |
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277 | conflicts of this sort. */ |
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278 | |
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279 | push: |
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280 | { |
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281 | typedefTable.enterScope(); |
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282 | } |
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283 | ; |
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284 | |
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285 | pop: |
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286 | { |
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287 | typedefTable.leaveScope(); |
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288 | } |
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289 | ; |
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290 | |
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291 | /************************* CONSTANTS ********************************/ |
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292 | |
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293 | constant: |
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294 | /* ENUMERATIONconstant is not included here; it is treated as a variable with type |
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295 | "enumeration constant". */ |
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296 | INTEGERconstant { $$ = new ConstantNode(ConstantNode::Integer, $1); } |
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297 | | FLOATINGconstant { $$ = new ConstantNode(ConstantNode::Float, $1); } |
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298 | | CHARACTERconstant { $$ = new ConstantNode(ConstantNode::Character, $1); } |
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299 | ; |
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300 | |
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301 | identifier: |
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302 | IDENTIFIER |
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303 | | ATTR_IDENTIFIER /* CFA */ |
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304 | | zero_one /* CFA */ |
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305 | ; |
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306 | |
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307 | no_01_identifier: |
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308 | IDENTIFIER |
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309 | | ATTR_IDENTIFIER /* CFA */ |
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310 | ; |
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311 | |
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312 | no_attr_identifier: |
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313 | IDENTIFIER |
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314 | ; |
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315 | |
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316 | zero_one: /* CFA */ |
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317 | ZERO |
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318 | | ONE |
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319 | ; |
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320 | |
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321 | string_literal_list: /* juxtaposed strings are concatenated */ |
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322 | STRINGliteral { $$ = new ConstantNode(ConstantNode::String, $1); } |
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323 | | string_literal_list STRINGliteral { $$ = $1->append( $2 ); } |
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324 | ; |
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325 | |
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326 | /************************* EXPRESSIONS ********************************/ |
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327 | |
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328 | primary_expression: |
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329 | IDENTIFIER /* typedef name cannot be used as a variable name */ |
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330 | { $$ = new VarRefNode($1); } |
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331 | | zero_one |
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332 | { $$ = new VarRefNode($1); } |
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333 | | constant |
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334 | { $$ = $1; } |
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335 | | string_literal_list |
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336 | { $$ = $1; } |
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337 | | '(' comma_expression ')' |
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338 | { $$ = $2; } |
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339 | | '(' compound_statement ')' /* GCC, lambda expression */ |
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340 | { $$ = new ValofExprNode($2); } |
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341 | ; |
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342 | |
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343 | postfix_expression: |
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344 | primary_expression |
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345 | | postfix_expression '[' push assignment_expression pop ']' |
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346 | /* CFA, comma_expression disallowed in the context because it results in a commom user error: |
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347 | subscripting a matrix with x[i,j] instead of x[i][j]. While this change is not backwards |
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348 | compatible, there seems to be little advantage to this feature and many disadvantages. It |
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349 | is possible to write x[(i,j)] in CFA, which is equivalent to the old x[i,j]. */ |
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350 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Index), $1, $4); } |
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351 | | postfix_expression '(' argument_expression_list ')' |
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352 | { $$ = new CompositeExprNode($1, $3); } |
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353 | | postfix_expression '.' no_attr_identifier |
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354 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::FieldSel), $1, |
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355 | new VarRefNode($3)); } |
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356 | | postfix_expression '.' '[' push field_list pop ']' /* CFA, tuple field selector */ |
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357 | | postfix_expression ARROW no_attr_identifier |
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358 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PFieldSel), $1, |
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359 | new VarRefNode($3)); } |
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360 | | postfix_expression ARROW '[' push field_list pop ']' /* CFA, tuple field selector */ |
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361 | | postfix_expression ICR |
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362 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::IncrPost), $1); } |
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363 | | postfix_expression DECR |
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364 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::DecrPost), $1); } |
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365 | /* GCC has priority: cast_expression */ |
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366 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' /* ANSI99 */ |
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367 | { $$ = 0; } |
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368 | ; |
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369 | |
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370 | argument_expression_list: |
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371 | argument_expression |
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372 | | argument_expression_list ',' argument_expression |
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373 | { $$ = (ExpressionNode *)($1->set_link($3)); } |
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374 | ; |
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375 | |
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376 | argument_expression: |
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377 | /* empty */ /* use default argument */ |
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378 | { $$ = 0; } |
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379 | | assignment_expression |
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380 | | no_attr_identifier ':' assignment_expression |
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381 | { $$ = $3->set_asArgName($1); } |
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382 | /* Only a list of no_attr_identifier_or_typedef_name is allowed in this context. However, there |
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383 | is insufficient look ahead to distinguish between this list of parameter names and a tuple, |
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384 | so the tuple form must be used with an appropriate semantic check. */ |
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385 | | '[' push assignment_expression pop ']' ':' assignment_expression |
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386 | { $$ = $7->set_asArgName($3); } |
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387 | | '[' push assignment_expression ',' tuple_expression_list pop ']' ':' assignment_expression |
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388 | { $$ = $9->set_asArgName(new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); } |
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389 | ; |
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390 | |
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391 | field_list: /* CFA, tuple field selector */ |
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392 | field |
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393 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
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394 | ; |
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395 | |
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396 | field: /* CFA, tuple field selector */ |
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397 | no_attr_identifier |
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398 | { $$ = new VarRefNode( $1 ); } |
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399 | | no_attr_identifier '.' field |
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400 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::FieldSel), new VarRefNode( $1 ), $3); } |
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401 | | no_attr_identifier '.' '[' push field_list pop ']' |
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402 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::FieldSel), new VarRefNode( $1 ), $5); } |
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403 | | no_attr_identifier ARROW field |
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404 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PFieldSel), new VarRefNode( $1 ), $3); } |
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405 | | no_attr_identifier ARROW '[' push field_list pop ']' |
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406 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PFieldSel), new VarRefNode( $1 ), $5); } |
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407 | ; |
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408 | |
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409 | unary_expression: |
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410 | postfix_expression |
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411 | | ICR unary_expression |
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412 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Incr), $2); } |
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413 | | DECR unary_expression |
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414 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Decr), $2); } |
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415 | | EXTENSION cast_expression /* GCC */ |
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416 | { $$ = $2; } |
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417 | | unary_operator cast_expression |
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418 | { $$ = new CompositeExprNode($1, $2); } |
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419 | | '!' cast_expression |
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420 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Neg), $2); } |
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421 | | '*' cast_expression /* CFA */ |
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422 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PointTo), $2); } |
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423 | /* '*' is is separated from unary_operator because of shift/reduce conflict in: |
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424 | { * X; } // dereference X |
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425 | { * int X; } // CFA declaration of pointer to int |
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426 | '&' must be moved here if C++ reference variables are supported. */ |
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427 | | SIZEOF unary_expression |
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428 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::SizeOf), $2); } |
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429 | | SIZEOF '(' type_name_no_function ')' |
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430 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::SizeOf), new TypeValueNode($3)); } |
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431 | | ATTR_IDENTIFIER |
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432 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Attr), new VarRefNode($1)); } |
---|
433 | | ATTR_IDENTIFIER '(' type_name ')' |
---|
434 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Attr), new VarRefNode($1), new TypeValueNode($3)); } |
---|
435 | | ATTR_IDENTIFIER '(' argument_expression ')' |
---|
436 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Attr), new VarRefNode($1), $3); } |
---|
437 | | ALIGNOF unary_expression /* GCC, variable alignment */ |
---|
438 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::AlignOf), $2); } |
---|
439 | | ALIGNOF '(' type_name_no_function ')' /* GCC, type alignment */ |
---|
440 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::AlignOf), new TypeValueNode($3)); } |
---|
441 | | ANDAND no_attr_identifier /* GCC, address of label */ |
---|
442 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LabelAddress), |
---|
443 | new VarRefNode($2, true)); } |
---|
444 | ; |
---|
445 | |
---|
446 | unary_operator: |
---|
447 | '&' { $$ = new OperatorNode(OperatorNode::AddressOf); } |
---|
448 | | '+' { $$ = new OperatorNode(OperatorNode::UnPlus); } |
---|
449 | | '-' { $$ = new OperatorNode(OperatorNode::UnMinus); } |
---|
450 | | '~' { $$ = new OperatorNode(OperatorNode::BitNeg); } |
---|
451 | ; |
---|
452 | |
---|
453 | cast_expression: |
---|
454 | unary_expression |
---|
455 | | '(' type_name_no_function ')' cast_expression |
---|
456 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cast), |
---|
457 | new TypeValueNode($2), $4); } |
---|
458 | | '(' type_name_no_function ')' tuple |
---|
459 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cast), |
---|
460 | new TypeValueNode($2), $4); } |
---|
461 | ; |
---|
462 | |
---|
463 | multiplicative_expression: |
---|
464 | cast_expression |
---|
465 | | multiplicative_expression '*' cast_expression |
---|
466 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Mul),$1,$3); } |
---|
467 | | multiplicative_expression '/' cast_expression |
---|
468 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Div),$1,$3); } |
---|
469 | | multiplicative_expression '%' cast_expression |
---|
470 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Mod),$1,$3); } |
---|
471 | ; |
---|
472 | |
---|
473 | additive_expression: |
---|
474 | multiplicative_expression |
---|
475 | | additive_expression '+' multiplicative_expression |
---|
476 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Plus),$1,$3); } |
---|
477 | | additive_expression '-' multiplicative_expression |
---|
478 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Minus),$1,$3); } |
---|
479 | ; |
---|
480 | |
---|
481 | shift_expression: |
---|
482 | additive_expression |
---|
483 | | shift_expression LS additive_expression |
---|
484 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LShift),$1,$3); } |
---|
485 | | shift_expression RS additive_expression |
---|
486 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::RShift),$1,$3); } |
---|
487 | ; |
---|
488 | |
---|
489 | relational_expression: |
---|
490 | shift_expression |
---|
491 | | relational_expression '<' shift_expression |
---|
492 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LThan),$1,$3); } |
---|
493 | | relational_expression '>' shift_expression |
---|
494 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::GThan),$1,$3); } |
---|
495 | | relational_expression LE shift_expression |
---|
496 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LEThan),$1,$3); } |
---|
497 | | relational_expression GE shift_expression |
---|
498 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::GEThan),$1,$3); } |
---|
499 | ; |
---|
500 | |
---|
501 | equality_expression: |
---|
502 | relational_expression |
---|
503 | | equality_expression EQ relational_expression |
---|
504 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Eq), $1, $3); } |
---|
505 | | equality_expression NE relational_expression |
---|
506 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Neq), $1, $3); } |
---|
507 | ; |
---|
508 | |
---|
509 | AND_expression: |
---|
510 | equality_expression |
---|
511 | | AND_expression '&' equality_expression |
---|
512 | { $$ =new CompositeExprNode(new OperatorNode(OperatorNode::BitAnd), $1, $3); } |
---|
513 | ; |
---|
514 | |
---|
515 | exclusive_OR_expression: |
---|
516 | AND_expression |
---|
517 | | exclusive_OR_expression '^' AND_expression |
---|
518 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Xor), $1, $3); } |
---|
519 | ; |
---|
520 | |
---|
521 | inclusive_OR_expression: |
---|
522 | exclusive_OR_expression |
---|
523 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
524 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::BitOr), $1, $3); } |
---|
525 | ; |
---|
526 | |
---|
527 | logical_AND_expression: |
---|
528 | inclusive_OR_expression |
---|
529 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
530 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::And), $1, $3); } |
---|
531 | ; |
---|
532 | |
---|
533 | logical_OR_expression: |
---|
534 | logical_AND_expression |
---|
535 | | logical_OR_expression OROR logical_AND_expression |
---|
536 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Or), $1, $3); } |
---|
537 | ; |
---|
538 | |
---|
539 | conditional_expression: |
---|
540 | logical_OR_expression |
---|
541 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
542 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cond), |
---|
543 | (ExpressionNode *)mkList((*$1,*$3,*$5))); } |
---|
544 | | logical_OR_expression '?' /* empty */ ':' conditional_expression /* GCC, omitted first operand */ |
---|
545 | { $$=new CompositeExprNode(new OperatorNode(OperatorNode::NCond),$1,$4); } |
---|
546 | | logical_OR_expression '?' comma_expression ':' tuple /* CFA, tuple expression */ |
---|
547 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cond), |
---|
548 | (ExpressionNode *)mkList(( *$1, *$3, *$5 ))); } |
---|
549 | ; |
---|
550 | |
---|
551 | constant_expression: |
---|
552 | conditional_expression |
---|
553 | ; |
---|
554 | |
---|
555 | assignment_expression: |
---|
556 | /* CFA, assignment is separated from assignment_operator to ensure no assignment operations |
---|
557 | for tuples */ |
---|
558 | conditional_expression |
---|
559 | | unary_expression '=' assignment_expression |
---|
560 | { $$ =new CompositeExprNode(new OperatorNode(OperatorNode::Assign), $1, $3); } |
---|
561 | | unary_expression assignment_operator assignment_expression |
---|
562 | { $$ =new CompositeExprNode($2, $1, $3); } |
---|
563 | | tuple assignment_opt /* CFA, tuple expression */ |
---|
564 | { |
---|
565 | if( $2 == 0 ) { |
---|
566 | $$ = $1; |
---|
567 | } else { |
---|
568 | $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $2 ); |
---|
569 | } |
---|
570 | } |
---|
571 | ; |
---|
572 | |
---|
573 | assignment_expression_opt: |
---|
574 | /* empty */ |
---|
575 | { $$ = new NullExprNode; } |
---|
576 | | assignment_expression |
---|
577 | ; |
---|
578 | |
---|
579 | tuple: /* CFA, tuple */ |
---|
580 | /* CFA, one assignment_expression is factored out of comma_expression to eliminate a |
---|
581 | shift/reduce conflict with comma_expression in new_identifier_parameter_array and |
---|
582 | new_abstract_array */ |
---|
583 | '[' push pop ']' |
---|
584 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ) ); } |
---|
585 | | '[' push assignment_expression pop ']' |
---|
586 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), $3 ); } |
---|
587 | | '[' push ',' tuple_expression_list pop ']' |
---|
588 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(new NullExprNode)->set_link( $4 ) ); } |
---|
589 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
---|
590 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 ) ) ); } |
---|
591 | ; |
---|
592 | |
---|
593 | tuple_expression_list: |
---|
594 | assignment_expression_opt |
---|
595 | | tuple_expression_list ',' assignment_expression_opt |
---|
596 | { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
597 | ; |
---|
598 | |
---|
599 | assignment_operator: |
---|
600 | MULTassign { $$ = new OperatorNode(OperatorNode::MulAssn); } |
---|
601 | | DIVassign { $$ = new OperatorNode(OperatorNode::DivAssn); } |
---|
602 | | MODassign { $$ = new OperatorNode(OperatorNode::ModAssn); } |
---|
603 | | PLUSassign { $$ = new OperatorNode(OperatorNode::PlusAssn); } |
---|
604 | | MINUSassign { $$ = new OperatorNode(OperatorNode::MinusAssn); } |
---|
605 | | LSassign { $$ = new OperatorNode(OperatorNode::LSAssn); } |
---|
606 | | RSassign { $$ = new OperatorNode(OperatorNode::RSAssn); } |
---|
607 | | ANDassign { $$ = new OperatorNode(OperatorNode::AndAssn); } |
---|
608 | | ERassign { $$ = new OperatorNode(OperatorNode::ERAssn); } |
---|
609 | | ORassign { $$ = new OperatorNode(OperatorNode::OrAssn); } |
---|
610 | ; |
---|
611 | |
---|
612 | comma_expression: |
---|
613 | assignment_expression |
---|
614 | | comma_expression ',' assignment_expression /* { $$ = (ExpressionNode *)$1->add_to_list($3); } */ |
---|
615 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Comma),$1,$3); } |
---|
616 | ; |
---|
617 | |
---|
618 | comma_expression_opt: |
---|
619 | /* empty */ { $$ = 0; } |
---|
620 | | comma_expression |
---|
621 | ; |
---|
622 | |
---|
623 | /*************************** STATEMENTS *******************************/ |
---|
624 | |
---|
625 | statement: |
---|
626 | labeled_statement |
---|
627 | | compound_statement |
---|
628 | | expression_statement { $$ = $1; } |
---|
629 | | selection_statement |
---|
630 | | iteration_statement |
---|
631 | | jump_statement |
---|
632 | | exception_statement |
---|
633 | | asm_statement |
---|
634 | ; |
---|
635 | |
---|
636 | labeled_statement: |
---|
637 | no_attr_identifier ':' attribute_list_opt statement |
---|
638 | { $$ = $4->add_label($1);} |
---|
639 | ; |
---|
640 | |
---|
641 | compound_statement: |
---|
642 | '{' '}' |
---|
643 | { $$ = new CompoundStmtNode( (StatementNode *)0 ); } |
---|
644 | | '{' |
---|
645 | /* Two scopes are necessary because the block itself has a scope, but every declaration within |
---|
646 | the block also requires its own scope */ |
---|
647 | push push |
---|
648 | label_declaration_opt /* GCC, local labels */ |
---|
649 | block_item_list pop '}' /* ANSI99, intermix declarations and statements */ |
---|
650 | { $$ = new CompoundStmtNode( $5 ); } |
---|
651 | ; |
---|
652 | |
---|
653 | block_item_list: /* ANSI99 */ |
---|
654 | block_item |
---|
655 | | block_item_list push block_item |
---|
656 | { if($1 != 0) { $1->set_link($3); $$ = $1; } } |
---|
657 | ; |
---|
658 | |
---|
659 | block_item: |
---|
660 | declaration /* CFA, new & old style declarations */ |
---|
661 | { $$ = new StatementNode( $1 ); } |
---|
662 | | EXTENSION declaration /* GCC */ |
---|
663 | { $$ = new StatementNode( $2 ); } |
---|
664 | | statement pop |
---|
665 | ; |
---|
666 | |
---|
667 | statement_list: |
---|
668 | statement |
---|
669 | | statement_list statement |
---|
670 | { if($1 != 0) { $1->set_link($2); $$ = $1; } } |
---|
671 | ; |
---|
672 | |
---|
673 | expression_statement: |
---|
674 | comma_expression_opt ';' |
---|
675 | { $$ = new StatementNode(StatementNode::Exp, $1, 0); } |
---|
676 | ; |
---|
677 | |
---|
678 | selection_statement: |
---|
679 | IF '(' comma_expression ')' statement %prec THEN |
---|
680 | /* explicitly deal with the shift/reduce conflict on if/else */ |
---|
681 | { $$ = new StatementNode(StatementNode::If, $3, $5); } |
---|
682 | | IF '(' comma_expression ')' statement ELSE statement |
---|
683 | { $$ = new StatementNode(StatementNode::If, $3, (StatementNode *)mkList((*$5, *$7)) ); } |
---|
684 | | SWITCH '(' comma_expression ')' case_clause /* CFA */ |
---|
685 | { $$ = new StatementNode(StatementNode::Switch, $3, $5); } |
---|
686 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' /* CFA */ |
---|
687 | { $$ = new StatementNode(StatementNode::Switch, $3, $8); /* xxx */ } |
---|
688 | /* The semantics of the declaration list is changed to include any associated initialization, |
---|
689 | which is performed *before* the transfer to the appropriate case clause. Statements after |
---|
690 | the initial declaration list can never be executed, and therefore, are removed from the |
---|
691 | grammar even though C allows it. */ |
---|
692 | | CHOOSE '(' comma_expression ')' case_clause /* CFA */ |
---|
693 | { $$ = new StatementNode(StatementNode::Choose, $3, $5); } |
---|
694 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' /* CFA */ |
---|
695 | { $$ = new StatementNode(StatementNode::Choose, $3, $8); } |
---|
696 | ; |
---|
697 | |
---|
698 | /* CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a |
---|
699 | case clause allows a list of values and subranges. */ |
---|
700 | |
---|
701 | case_value: /* CFA */ |
---|
702 | constant_expression { $$ = $1; } |
---|
703 | | constant_expression ELLIPSIS constant_expression /* GCC, subrange */ |
---|
704 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range),$1,$3); } |
---|
705 | | subrange /* CFA, subrange */ |
---|
706 | ; |
---|
707 | |
---|
708 | case_value_list: /* CFA */ |
---|
709 | case_value |
---|
710 | | case_value_list ',' case_value |
---|
711 | { $$ = new CompositeExprNode(new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(tupleContents($1))->set_link($3) ); } |
---|
712 | ; |
---|
713 | |
---|
714 | case_label: /* CFA */ |
---|
715 | CASE case_value_list ':' { $$ = new StatementNode(StatementNode::Case, $2, 0); } |
---|
716 | | DEFAULT ':' { $$ = new StatementNode(StatementNode::Default); } |
---|
717 | /* A semantic check is required to ensure only one default clause per switch/choose |
---|
718 | statement. */ |
---|
719 | ; |
---|
720 | |
---|
721 | case_label_list: /* CFA */ |
---|
722 | case_label |
---|
723 | | case_label_list case_label { $$ = (StatementNode *)($1->set_link($2)); } |
---|
724 | ; |
---|
725 | |
---|
726 | case_clause: /* CFA */ |
---|
727 | case_label_list statement { $$ = $1->append_last_case($2); } |
---|
728 | ; |
---|
729 | |
---|
730 | switch_clause_list_opt: /* CFA */ |
---|
731 | /* empty */ { $$ = 0; } |
---|
732 | | switch_clause_list |
---|
733 | ; |
---|
734 | |
---|
735 | switch_clause_list: /* CFA */ |
---|
736 | case_label_list statement_list |
---|
737 | { $$ = $1->append_last_case($2); } |
---|
738 | | switch_clause_list case_label_list statement_list |
---|
739 | { $$ = (StatementNode *)($1->set_link($2->append_last_case($3))); } |
---|
740 | ; |
---|
741 | |
---|
742 | choose_clause_list_opt: /* CFA */ |
---|
743 | /* empty */ { $$ = 0; } |
---|
744 | | choose_clause_list |
---|
745 | ; |
---|
746 | |
---|
747 | choose_clause_list: /* CFA */ |
---|
748 | case_label_list fall_through |
---|
749 | { $$ = $1->append_last_case($2); } |
---|
750 | | case_label_list statement_list fall_through_opt |
---|
751 | { $$ = $1->append_last_case((StatementNode *)mkList((*$2,*$3))); } |
---|
752 | | choose_clause_list case_label_list fall_through |
---|
753 | { $$ = (StatementNode *)($1->set_link($2->append_last_case($3))); } |
---|
754 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
755 | { $$ = (StatementNode *)($1->set_link($2->append_last_case((StatementNode *)mkList((*$3,*$4))))); } |
---|
756 | ; |
---|
757 | |
---|
758 | fall_through_opt: /* CFA */ |
---|
759 | /* empty */ { $$ = 0; } |
---|
760 | | fall_through |
---|
761 | ; |
---|
762 | |
---|
763 | fall_through: /* CFA */ |
---|
764 | FALLTHRU { $$ = new StatementNode(StatementNode::Fallthru, 0, 0); } |
---|
765 | | FALLTHRU ';' { $$ = new StatementNode(StatementNode::Fallthru, 0, 0); } |
---|
766 | ; |
---|
767 | |
---|
768 | iteration_statement: |
---|
769 | WHILE '(' comma_expression ')' statement |
---|
770 | { $$ = new StatementNode(StatementNode::While, $3, $5); } |
---|
771 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
772 | { $$ = new StatementNode(StatementNode::Do, $5, $2); } |
---|
773 | | FOR '(' push for_control_expression ')' statement |
---|
774 | { $$ = new StatementNode(StatementNode::For, $4, $6); } |
---|
775 | ; |
---|
776 | |
---|
777 | for_control_expression: |
---|
778 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
779 | { $$ = new ForCtlExprNode($1, $4, $6); } |
---|
780 | | declaration comma_expression_opt ';' comma_expression_opt /* ANSI99 */ |
---|
781 | /* Like C++, the loop index can be declared local to the loop. */ |
---|
782 | { $$ = new ForCtlExprNode($1, $2, $4); } |
---|
783 | ; |
---|
784 | |
---|
785 | jump_statement: |
---|
786 | GOTO no_attr_identifier ';' |
---|
787 | { $$ = new StatementNode(StatementNode::Goto, $2); } |
---|
788 | | GOTO '*' comma_expression ';' /* GCC, computed goto */ |
---|
789 | /* The syntax for the GCC computed goto violates normal expression precedence, e.g., |
---|
790 | goto *i+3; => goto *(i+3); whereas normal operator precedence yields goto (*i)+3; */ |
---|
791 | { $$ = new StatementNode(StatementNode::Goto, $3); } |
---|
792 | | CONTINUE ';' |
---|
793 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
794 | iteration statement. */ |
---|
795 | { $$ = new StatementNode(StatementNode::Continue, 0, 0); } |
---|
796 | | CONTINUE no_attr_identifier ';' /* CFA, multi-level continue */ |
---|
797 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
798 | iteration statement, and the target of the transfer appears only at the start of an |
---|
799 | iteration statement. */ |
---|
800 | { $$ = new StatementNode(StatementNode::Continue, $2); } |
---|
801 | | BREAK ';' |
---|
802 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
803 | iteration statement. */ |
---|
804 | { $$ = new StatementNode(StatementNode::Break, 0, 0); } |
---|
805 | | BREAK no_attr_identifier ';' /* CFA, multi-level exit */ |
---|
806 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
807 | iteration statement, and the target of the transfer appears only at the start of an |
---|
808 | iteration statement. */ |
---|
809 | { $$ = new StatementNode(StatementNode::Break, $2 ); } |
---|
810 | | RETURN comma_expression_opt ';' |
---|
811 | { $$ = new StatementNode(StatementNode::Return, $2, 0); } |
---|
812 | | THROW assignment_expression ';' |
---|
813 | { $$ = new StatementNode(StatementNode::Throw, $2, 0); } |
---|
814 | | THROW ';' |
---|
815 | { $$ = new StatementNode(StatementNode::Throw, 0, 0); } |
---|
816 | ; |
---|
817 | |
---|
818 | exception_statement: |
---|
819 | TRY compound_statement handler_list |
---|
820 | { $$ = new StatementNode(StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3)))); } |
---|
821 | | TRY compound_statement finally_clause |
---|
822 | { $$ = new StatementNode(StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3)))); } |
---|
823 | | TRY compound_statement handler_list finally_clause |
---|
824 | { |
---|
825 | $3->set_link($4); |
---|
826 | $$ = new StatementNode(StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3)))); |
---|
827 | } |
---|
828 | ; |
---|
829 | |
---|
830 | handler_list: |
---|
831 | /* There must be at least one catch clause */ |
---|
832 | handler_clause |
---|
833 | /* ISO/IEC 9899:1999 Section 15.3(6) If present, a "..." handler shall be the last handler for |
---|
834 | its try block. */ |
---|
835 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
836 | { $$ = StatementNode::newCatchStmt( 0, $5, true ); } |
---|
837 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
838 | { $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); } |
---|
839 | ; |
---|
840 | |
---|
841 | handler_clause: |
---|
842 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
843 | { $$ = StatementNode::newCatchStmt($5, $8); } |
---|
844 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
845 | { $$ = $1->set_link( StatementNode::newCatchStmt($6, $9) ); } |
---|
846 | ; |
---|
847 | |
---|
848 | finally_clause: |
---|
849 | FINALLY compound_statement |
---|
850 | { $$ = new StatementNode(StatementNode::Finally, 0, $2); |
---|
851 | std::cout << "Just created a finally node" << std::endl; |
---|
852 | } |
---|
853 | ; |
---|
854 | |
---|
855 | exception_declaration: |
---|
856 | /* A semantic check is required to ensure type_specifier does not create a new type, e.g.: |
---|
857 | |
---|
858 | catch ( struct { int i; } x ) ... |
---|
859 | |
---|
860 | This new type cannot catch any thrown type because of name equivalence among types. */ |
---|
861 | type_specifier |
---|
862 | | type_specifier declarator |
---|
863 | { |
---|
864 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
865 | $$ = $2->addType( $1 ); |
---|
866 | } |
---|
867 | | type_specifier variable_abstract_declarator |
---|
868 | { $$ = $2->addType( $1 ); } |
---|
869 | | new_abstract_declarator_tuple no_attr_identifier /* CFA */ |
---|
870 | { |
---|
871 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
872 | $$ = $1->addName( $2 ); |
---|
873 | } |
---|
874 | | new_abstract_declarator_tuple /* CFA */ |
---|
875 | ; |
---|
876 | |
---|
877 | asm_statement: |
---|
878 | ASM type_qualifier_list_opt '(' constant_expression ')' ';' |
---|
879 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
880 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ')' ';' /* remaining GCC */ |
---|
881 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
882 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
883 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
884 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ':' asm_operands_opt ':' |
---|
885 | asm_clobbers_list ')' ';' |
---|
886 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
887 | ; |
---|
888 | |
---|
889 | asm_operands_opt: /* GCC */ |
---|
890 | /* empty */ |
---|
891 | | asm_operands_list |
---|
892 | ; |
---|
893 | |
---|
894 | asm_operands_list: /* GCC */ |
---|
895 | asm_operand |
---|
896 | | asm_operands_list ',' asm_operand |
---|
897 | ; |
---|
898 | |
---|
899 | asm_operand: /* GCC */ |
---|
900 | STRINGliteral '(' constant_expression ')' {} |
---|
901 | ; |
---|
902 | |
---|
903 | asm_clobbers_list: /* GCC */ |
---|
904 | STRINGliteral {} |
---|
905 | | asm_clobbers_list ',' STRINGliteral |
---|
906 | ; |
---|
907 | |
---|
908 | /******************************* DECLARATIONS *********************************/ |
---|
909 | |
---|
910 | declaration_list_opt: /* used at beginning of switch statement */ |
---|
911 | pop |
---|
912 | { $$ = 0; } |
---|
913 | | declaration_list |
---|
914 | ; |
---|
915 | |
---|
916 | declaration_list: |
---|
917 | declaration |
---|
918 | | declaration_list push declaration |
---|
919 | { $$ = $1->appendList( $3 ); } |
---|
920 | ; |
---|
921 | |
---|
922 | old_declaration_list_opt: /* used to declare parameter types in K&R style functions */ |
---|
923 | pop |
---|
924 | { $$ = 0; } |
---|
925 | | old_declaration_list |
---|
926 | ; |
---|
927 | |
---|
928 | old_declaration_list: |
---|
929 | old_declaration |
---|
930 | | old_declaration_list push old_declaration |
---|
931 | { $$ = $1->appendList( $3 ); } |
---|
932 | ; |
---|
933 | |
---|
934 | label_declaration_opt: /* GCC, local label */ |
---|
935 | /* empty */ |
---|
936 | | label_declaration_list |
---|
937 | ; |
---|
938 | |
---|
939 | label_declaration_list: /* GCC, local label */ |
---|
940 | LABEL label_list ';' |
---|
941 | | label_declaration_list LABEL label_list ';' |
---|
942 | ; |
---|
943 | |
---|
944 | label_list: /* GCC, local label */ |
---|
945 | no_attr_identifier_or_typedef_name {} |
---|
946 | | label_list ',' no_attr_identifier_or_typedef_name {} |
---|
947 | ; |
---|
948 | |
---|
949 | declaration: /* CFA, new & old style declarations */ |
---|
950 | new_declaration |
---|
951 | | old_declaration |
---|
952 | ; |
---|
953 | |
---|
954 | /* C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and |
---|
955 | function declarations. CFA declarations use the same declaration tokens as in C; however, CFA places |
---|
956 | declaration modifiers to the left of the base type, while C declarations place modifiers to the right of |
---|
957 | the base type. CFA declaration modifiers are interpreted from left to right and the entire type |
---|
958 | specification is distributed across all variables in the declaration list (as in Pascal). ANSI C and the |
---|
959 | new CFA declarations may appear together in the same program block, but cannot be mixed within a specific |
---|
960 | declaration. |
---|
961 | |
---|
962 | CFA C |
---|
963 | [10] int x; int x[10]; // array of 10 integers |
---|
964 | [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
965 | */ |
---|
966 | |
---|
967 | new_declaration: /* CFA */ |
---|
968 | new_variable_declaration pop ';' |
---|
969 | | new_typedef_declaration pop ';' |
---|
970 | | new_function_declaration pop ';' |
---|
971 | | type_declaring_list pop ';' |
---|
972 | | context_specifier pop ';' |
---|
973 | ; |
---|
974 | |
---|
975 | new_variable_declaration: /* CFA */ |
---|
976 | new_variable_specifier initializer_opt |
---|
977 | { |
---|
978 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
979 | $$ = $1; |
---|
980 | } |
---|
981 | | declaration_qualifier_list new_variable_specifier initializer_opt |
---|
982 | /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is |
---|
983 | necessary to preclude them as a type_qualifier cannot appear in that context. */ |
---|
984 | { |
---|
985 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
986 | $$ = $2->addQualifiers( $1 ); |
---|
987 | } |
---|
988 | | new_variable_declaration pop ',' push identifier_or_typedef_name initializer_opt |
---|
989 | { |
---|
990 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID); |
---|
991 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
992 | } |
---|
993 | ; |
---|
994 | |
---|
995 | new_variable_specifier: /* CFA */ |
---|
996 | /* A semantic check is required to ensure asm_name only appears on declarations with implicit |
---|
997 | or explicit static storage-class */ |
---|
998 | new_abstract_declarator_no_tuple identifier_or_typedef_name asm_name_opt |
---|
999 | { |
---|
1000 | typedefTable.setNextIdentifier( *$2 ); |
---|
1001 | $$ = $1->addName( $2 ); |
---|
1002 | } |
---|
1003 | | new_abstract_tuple identifier_or_typedef_name asm_name_opt |
---|
1004 | { |
---|
1005 | typedefTable.setNextIdentifier( *$2 ); |
---|
1006 | $$ = $1->addName( $2 ); |
---|
1007 | } |
---|
1008 | | type_qualifier_list new_abstract_tuple identifier_or_typedef_name asm_name_opt |
---|
1009 | { |
---|
1010 | typedefTable.setNextIdentifier( *$3 ); |
---|
1011 | $$ = $2->addQualifiers( $1 )->addName( $3 ); |
---|
1012 | } |
---|
1013 | ; |
---|
1014 | |
---|
1015 | new_function_declaration: /* CFA */ |
---|
1016 | new_function_specifier |
---|
1017 | { |
---|
1018 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
1019 | $$ = $1; |
---|
1020 | } |
---|
1021 | | declaration_qualifier_list new_function_specifier |
---|
1022 | /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is |
---|
1023 | necessary to preclude them as a type_qualifier cannot appear in this context. */ |
---|
1024 | { |
---|
1025 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
1026 | $$ = $2->addQualifiers( $1 ); |
---|
1027 | } |
---|
1028 | | new_function_declaration pop ',' push identifier_or_typedef_name |
---|
1029 | { |
---|
1030 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID); |
---|
1031 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
1032 | } |
---|
1033 | ; |
---|
1034 | |
---|
1035 | new_function_specifier: /* CFA */ |
---|
1036 | '[' push pop ']' identifier '(' push new_parameter_type_list_opt pop ')' |
---|
1037 | { |
---|
1038 | typedefTable.setNextIdentifier( *($5) ); |
---|
1039 | $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
1040 | } |
---|
1041 | | '[' push pop ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')' |
---|
1042 | { |
---|
1043 | typedefTable.setNextIdentifier( *($5) ); |
---|
1044 | $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
1045 | } |
---|
1046 | /* identifier_or_typedef_name must be broken apart because of the sequence: |
---|
1047 | |
---|
1048 | '[' ']' identifier_or_typedef_name '(' new_parameter_type_list_opt ')' |
---|
1049 | '[' ']' type_specifier |
---|
1050 | |
---|
1051 | type_specifier can resolve to just TYPEDEFname (e.g. typedef int T; int f( T );). Therefore |
---|
1052 | this must be flattened to allow lookahead to the '(' without having to reduce |
---|
1053 | identifier_or_typedef_name. */ |
---|
1054 | | new_abstract_tuple identifier_or_typedef_name '(' push new_parameter_type_list_opt pop ')' |
---|
1055 | /* To obtain LR(1), this rule must be factored out from function return type (see |
---|
1056 | new_abstract_declarator). */ |
---|
1057 | { |
---|
1058 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
1059 | } |
---|
1060 | | new_function_return identifier_or_typedef_name '(' push new_parameter_type_list_opt pop ')' |
---|
1061 | { |
---|
1062 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
1063 | } |
---|
1064 | ; |
---|
1065 | |
---|
1066 | new_function_return: /* CFA */ |
---|
1067 | '[' push new_parameter_list pop ']' |
---|
1068 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
1069 | | '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']' |
---|
1070 | /* To obtain LR(1), the last new_abstract_parameter_list is added into this flattened rule to |
---|
1071 | lookahead to the ']'. */ |
---|
1072 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
1073 | ; |
---|
1074 | |
---|
1075 | new_typedef_declaration: /* CFA */ |
---|
1076 | TYPEDEF new_variable_specifier |
---|
1077 | { |
---|
1078 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
1079 | $$ = $2->addTypedef(); |
---|
1080 | } |
---|
1081 | | TYPEDEF new_function_specifier |
---|
1082 | { |
---|
1083 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
1084 | $$ = $2->addTypedef(); |
---|
1085 | } |
---|
1086 | | new_typedef_declaration pop ',' push no_attr_identifier |
---|
1087 | { |
---|
1088 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD); |
---|
1089 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
1090 | } |
---|
1091 | ; |
---|
1092 | |
---|
1093 | /* Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is |
---|
1094 | factored out as a separate form of declaration, which syntactically precludes storage-class specifiers and |
---|
1095 | initialization. */ |
---|
1096 | |
---|
1097 | typedef_declaration: |
---|
1098 | TYPEDEF type_specifier declarator |
---|
1099 | { |
---|
1100 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
1101 | $$ = $3->addType( $2 )->addTypedef(); |
---|
1102 | } |
---|
1103 | | typedef_declaration pop ',' push declarator |
---|
1104 | { |
---|
1105 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
1106 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
1107 | } |
---|
1108 | | type_qualifier_list TYPEDEF type_specifier declarator /* remaining OBSOLESCENT (see 2) */ |
---|
1109 | { |
---|
1110 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
1111 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
1112 | } |
---|
1113 | | type_specifier TYPEDEF declarator |
---|
1114 | { |
---|
1115 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
1116 | $$ = $3->addType( $1 )->addTypedef(); |
---|
1117 | } |
---|
1118 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
1119 | { |
---|
1120 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
1121 | $$ = $4->addQualifiers($1)->addTypedef()->addType($1); |
---|
1122 | } |
---|
1123 | ; |
---|
1124 | |
---|
1125 | typedef_expression: /* GCC, naming expression type */ |
---|
1126 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
1127 | { |
---|
1128 | typedefTable.addToEnclosingScope(*($2), TypedefTable::TD); |
---|
1129 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
1130 | } |
---|
1131 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
1132 | { |
---|
1133 | typedefTable.addToEnclosingScope(*($5), TypedefTable::TD); |
---|
1134 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
1135 | } |
---|
1136 | ; |
---|
1137 | |
---|
1138 | old_declaration: |
---|
1139 | declaring_list pop ';' |
---|
1140 | | typedef_declaration pop ';' |
---|
1141 | | typedef_expression pop ';' /* GCC, naming expression type */ |
---|
1142 | | sue_declaration_specifier pop ';' |
---|
1143 | ; |
---|
1144 | |
---|
1145 | declaring_list: |
---|
1146 | /* A semantic check is required to ensure asm_name only appears on declarations with implicit |
---|
1147 | or explicit static storage-class */ |
---|
1148 | declaration_specifier declarator asm_name_opt initializer_opt |
---|
1149 | { |
---|
1150 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
1151 | $$ = ($2->addType( $1 ))->addInitializer($4); |
---|
1152 | } |
---|
1153 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
1154 | { |
---|
1155 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
1156 | $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer($6) ) ); |
---|
1157 | } |
---|
1158 | ; |
---|
1159 | |
---|
1160 | declaration_specifier: /* type specifier + storage class */ |
---|
1161 | basic_declaration_specifier |
---|
1162 | | sue_declaration_specifier |
---|
1163 | | typedef_declaration_specifier |
---|
1164 | | typegen_declaration_specifier |
---|
1165 | ; |
---|
1166 | |
---|
1167 | type_specifier: /* declaration specifier - storage class */ |
---|
1168 | basic_type_specifier |
---|
1169 | | sue_type_specifier |
---|
1170 | | typedef_type_specifier |
---|
1171 | | typegen_type_specifier |
---|
1172 | ; |
---|
1173 | |
---|
1174 | type_qualifier_list_opt: /* GCC, used in asm_statement */ |
---|
1175 | /* empty */ |
---|
1176 | { $$ = 0; } |
---|
1177 | | type_qualifier_list |
---|
1178 | ; |
---|
1179 | |
---|
1180 | type_qualifier_list: |
---|
1181 | /* A semantic check is necessary to ensure a type qualifier is appropriate for the kind of |
---|
1182 | declaration. |
---|
1183 | |
---|
1184 | ISO/IEC 9899:1999 Section 6.7.3(4) : If the same qualifier appears more than once in the |
---|
1185 | same specifier-qualifier-list, either directly or via one or more typedefs, the behavior is |
---|
1186 | the same as if it appeared only once. */ |
---|
1187 | type_qualifier |
---|
1188 | | type_qualifier_list type_qualifier |
---|
1189 | { $$ = $1->addQualifiers( $2 ); } |
---|
1190 | ; |
---|
1191 | |
---|
1192 | type_qualifier: |
---|
1193 | type_qualifier_name |
---|
1194 | | attribute |
---|
1195 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
1196 | ; |
---|
1197 | |
---|
1198 | type_qualifier_name: |
---|
1199 | CONST |
---|
1200 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
1201 | | RESTRICT |
---|
1202 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); } |
---|
1203 | | VOLATILE |
---|
1204 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); } |
---|
1205 | | LVALUE /* CFA */ |
---|
1206 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); } |
---|
1207 | | FORALL '(' |
---|
1208 | { |
---|
1209 | typedefTable.enterScope(); |
---|
1210 | } |
---|
1211 | type_parameter_list ')' /* CFA */ |
---|
1212 | { |
---|
1213 | typedefTable.leaveScope(); |
---|
1214 | $$ = DeclarationNode::newForall( $4 ); |
---|
1215 | } |
---|
1216 | ; |
---|
1217 | |
---|
1218 | declaration_qualifier_list: |
---|
1219 | storage_class_list |
---|
1220 | | type_qualifier_list storage_class_list /* remaining OBSOLESCENT (see 2) */ |
---|
1221 | { $$ = $1->addQualifiers( $2 ); } |
---|
1222 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
1223 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
1224 | ; |
---|
1225 | |
---|
1226 | storage_class_list: |
---|
1227 | /* A semantic check is necessary to ensure a storage class is appropriate for the kind of |
---|
1228 | declaration and that only one of each is specified, except for inline, which can appear |
---|
1229 | with the others. |
---|
1230 | |
---|
1231 | ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in |
---|
1232 | the declaration specifiers in a declaration. */ |
---|
1233 | storage_class |
---|
1234 | | storage_class_list storage_class |
---|
1235 | { $$ = $1->addQualifiers( $2 ); } |
---|
1236 | ; |
---|
1237 | |
---|
1238 | storage_class: |
---|
1239 | storage_class_name |
---|
1240 | ; |
---|
1241 | |
---|
1242 | storage_class_name: |
---|
1243 | AUTO |
---|
1244 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); } |
---|
1245 | | EXTERN |
---|
1246 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); } |
---|
1247 | | REGISTER |
---|
1248 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); } |
---|
1249 | | STATIC |
---|
1250 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); } |
---|
1251 | | INLINE /* ANSI99 */ |
---|
1252 | /* INLINE is essentially a storage class specifier for functions, and hence, belongs here. */ |
---|
1253 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); } |
---|
1254 | | FORTRAN /* ANSI99 */ |
---|
1255 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); } |
---|
1256 | ; |
---|
1257 | |
---|
1258 | basic_type_name: |
---|
1259 | CHAR |
---|
1260 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
1261 | | DOUBLE |
---|
1262 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
1263 | | FLOAT |
---|
1264 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
1265 | | INT |
---|
1266 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
1267 | | LONG |
---|
1268 | { $$ = DeclarationNode::newModifier( DeclarationNode::Long ); } |
---|
1269 | | SHORT |
---|
1270 | { $$ = DeclarationNode::newModifier( DeclarationNode::Short ); } |
---|
1271 | | SIGNED |
---|
1272 | { $$ = DeclarationNode::newModifier( DeclarationNode::Signed ); } |
---|
1273 | | UNSIGNED |
---|
1274 | { $$ = DeclarationNode::newModifier( DeclarationNode::Unsigned ); } |
---|
1275 | | VOID |
---|
1276 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
1277 | | BOOL /* ANSI99 */ |
---|
1278 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
1279 | | COMPLEX /* ANSI99 */ |
---|
1280 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); } |
---|
1281 | | IMAGINARY /* ANSI99 */ |
---|
1282 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); } |
---|
1283 | ; |
---|
1284 | |
---|
1285 | basic_declaration_specifier: |
---|
1286 | /* A semantic check is necessary for conflicting storage classes. */ |
---|
1287 | basic_type_specifier |
---|
1288 | | declaration_qualifier_list basic_type_specifier |
---|
1289 | { $$ = $2->addQualifiers( $1 ); } |
---|
1290 | | basic_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
1291 | { $$ = $1->addQualifiers( $2 ); } |
---|
1292 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
1293 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
1294 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
1295 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
1296 | ; |
---|
1297 | |
---|
1298 | basic_type_specifier: |
---|
1299 | direct_type_name |
---|
1300 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
1301 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
1302 | ; |
---|
1303 | |
---|
1304 | direct_type_name: |
---|
1305 | /* A semantic check is necessary for conflicting type qualifiers. */ |
---|
1306 | basic_type_name |
---|
1307 | | type_qualifier_list basic_type_name |
---|
1308 | { $$ = $2->addQualifiers( $1 ); } |
---|
1309 | | direct_type_name type_qualifier |
---|
1310 | { $$ = $1->addQualifiers( $2 ); } |
---|
1311 | | direct_type_name basic_type_name |
---|
1312 | { $$ = $1->addType( $2 ); } |
---|
1313 | ; |
---|
1314 | |
---|
1315 | indirect_type_name: |
---|
1316 | TYPEOF '(' type_name ')' /* GCC: typeof(x) y; */ |
---|
1317 | { $$ = $3; } |
---|
1318 | | TYPEOF '(' comma_expression ')' /* GCC: typeof(a+b) y; */ |
---|
1319 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
1320 | | ATTR_TYPEGENname '(' type_name ')' /* CFA: e.g., @type(x) y; */ |
---|
1321 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
1322 | | ATTR_TYPEGENname '(' comma_expression ')' /* CFA: e.g., @type(a+b) y; */ |
---|
1323 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
1324 | ; |
---|
1325 | |
---|
1326 | sue_declaration_specifier: |
---|
1327 | sue_type_specifier |
---|
1328 | | declaration_qualifier_list sue_type_specifier |
---|
1329 | { $$ = $2->addQualifiers( $1 ); } |
---|
1330 | | sue_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
1331 | { $$ = $1->addQualifiers( $2 ); } |
---|
1332 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
1333 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
1334 | ; |
---|
1335 | |
---|
1336 | sue_type_specifier: |
---|
1337 | elaborated_type_name /* struct, union, enum */ |
---|
1338 | | type_qualifier_list elaborated_type_name |
---|
1339 | { $$ = $2->addQualifiers( $1 ); } |
---|
1340 | | sue_type_specifier type_qualifier |
---|
1341 | { $$ = $1->addQualifiers( $2 ); } |
---|
1342 | ; |
---|
1343 | |
---|
1344 | typedef_declaration_specifier: |
---|
1345 | typedef_type_specifier |
---|
1346 | | declaration_qualifier_list typedef_type_specifier |
---|
1347 | { $$ = $2->addQualifiers( $1 ); } |
---|
1348 | | typedef_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
1349 | { $$ = $1->addQualifiers( $2 ); } |
---|
1350 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
1351 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
1352 | ; |
---|
1353 | |
---|
1354 | typedef_type_specifier: /* typedef types */ |
---|
1355 | TYPEDEFname |
---|
1356 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
1357 | | type_qualifier_list TYPEDEFname |
---|
1358 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
1359 | | typedef_type_specifier type_qualifier |
---|
1360 | { $$ = $1->addQualifiers( $2 ); } |
---|
1361 | ; |
---|
1362 | |
---|
1363 | elaborated_type_name: |
---|
1364 | aggregate_name |
---|
1365 | | enum_name |
---|
1366 | ; |
---|
1367 | |
---|
1368 | aggregate_name: |
---|
1369 | aggregate_key '{' field_declaration_list '}' |
---|
1370 | { $$ = DeclarationNode::newAggregate( $1, 0, 0, 0, $3 ); } |
---|
1371 | | aggregate_key no_attr_identifier_or_typedef_name |
---|
1372 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, 0, 0 ); } |
---|
1373 | | aggregate_key no_attr_identifier_or_typedef_name '{' field_declaration_list '}' |
---|
1374 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, 0, $4 ); } |
---|
1375 | | aggregate_key '(' push type_parameter_list pop ')' '{' field_declaration_list '}' /* CFA */ |
---|
1376 | { $$ = DeclarationNode::newAggregate( $1, 0, $4, 0, $8 ); } |
---|
1377 | | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name /* CFA */ |
---|
1378 | { $$ = DeclarationNode::newAggregate( $1, $7, $4, 0, 0 ); } |
---|
1379 | | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' /* CFA */ |
---|
1380 | { $$ = DeclarationNode::newAggregate( $1, $7, $4, 0, $9 ); } |
---|
1381 | | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' '{' field_declaration_list '}' /* CFA */ |
---|
1382 | { $$ = DeclarationNode::newAggregate( $1, 0, $4, $8, $11 ); } |
---|
1383 | | aggregate_key '(' push type_name_list pop ')' no_attr_identifier_or_typedef_name /* CFA */ |
---|
1384 | /* push and pop are only to prevent S/R conflicts */ |
---|
1385 | { $$ = DeclarationNode::newAggregate( $1, $7, 0, $4, 0 ); } |
---|
1386 | | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' /* CFA */ |
---|
1387 | { $$ = DeclarationNode::newAggregate( $1, $10, $4, $8, $12 ); } |
---|
1388 | ; |
---|
1389 | |
---|
1390 | aggregate_key: |
---|
1391 | STRUCT attribute_list_opt |
---|
1392 | { $$ = DeclarationNode::Struct; } |
---|
1393 | | UNION attribute_list_opt |
---|
1394 | { $$ = DeclarationNode::Union; } |
---|
1395 | ; |
---|
1396 | |
---|
1397 | field_declaration_list: |
---|
1398 | field_declaration |
---|
1399 | { $$ = $1; } |
---|
1400 | | field_declaration_list field_declaration |
---|
1401 | { $$ = $1->appendList( $2 ); } |
---|
1402 | ; |
---|
1403 | |
---|
1404 | field_declaration: |
---|
1405 | new_field_declaring_list ';' /* CFA, new style field declaration */ |
---|
1406 | | EXTENSION new_field_declaring_list ';' /* GCC */ |
---|
1407 | { $$ = $2; } |
---|
1408 | | field_declaring_list ';' |
---|
1409 | | EXTENSION field_declaring_list ';' /* GCC */ |
---|
1410 | { $$ = $2; } |
---|
1411 | ; |
---|
1412 | |
---|
1413 | new_field_declaring_list: /* CFA, new style field declaration */ |
---|
1414 | new_abstract_declarator_tuple /* CFA, no field name */ |
---|
1415 | | new_abstract_declarator_tuple no_attr_identifier_or_typedef_name |
---|
1416 | { $$ = $1->addName( $2 ); } |
---|
1417 | | new_field_declaring_list ',' no_attr_identifier_or_typedef_name |
---|
1418 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
1419 | | new_field_declaring_list ',' /* CFA, no field name */ |
---|
1420 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
1421 | ; |
---|
1422 | |
---|
1423 | field_declaring_list: |
---|
1424 | type_specifier field_declarator |
---|
1425 | { $$ = $2->addType( $1 ); } |
---|
1426 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
1427 | { $$ = $1->appendList( $1->cloneBaseType( $4 ) ); } |
---|
1428 | ; |
---|
1429 | |
---|
1430 | field_declarator: |
---|
1431 | /* empty */ /* CFA, no field name */ |
---|
1432 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } |
---|
1433 | | bit_subrange_size /* no field name */ |
---|
1434 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
1435 | | variable_declarator bit_subrange_size_opt |
---|
1436 | /* A semantic check is required to ensure bit_subrange only appears on base type int. */ |
---|
1437 | { $$ = $1->addBitfield( $2 ); } |
---|
1438 | | typedef_redeclarator bit_subrange_size_opt |
---|
1439 | /* A semantic check is required to ensure bit_subrange only appears on base type int. */ |
---|
1440 | { $$ = $1->addBitfield( $2 ); } |
---|
1441 | | variable_abstract_declarator /* CFA, no field name */ |
---|
1442 | ; |
---|
1443 | |
---|
1444 | bit_subrange_size_opt: |
---|
1445 | /* empty */ |
---|
1446 | { $$ = 0; } |
---|
1447 | | bit_subrange_size |
---|
1448 | { $$ = $1; } |
---|
1449 | ; |
---|
1450 | |
---|
1451 | bit_subrange_size: |
---|
1452 | ':' constant_expression |
---|
1453 | { $$ = $2; } |
---|
1454 | ; |
---|
1455 | |
---|
1456 | enum_key: |
---|
1457 | ENUM attribute_list_opt |
---|
1458 | ; |
---|
1459 | |
---|
1460 | enum_name: |
---|
1461 | enum_key '{' enumerator_list comma_opt '}' |
---|
1462 | { $$ = DeclarationNode::newEnum( 0, $3 ); } |
---|
1463 | | enum_key no_attr_identifier_or_typedef_name '{' enumerator_list comma_opt '}' |
---|
1464 | { $$ = DeclarationNode::newEnum( $2, $4 ); } |
---|
1465 | | enum_key no_attr_identifier_or_typedef_name |
---|
1466 | { $$ = DeclarationNode::newEnum( $2, 0 ); } |
---|
1467 | ; |
---|
1468 | |
---|
1469 | enumerator_list: |
---|
1470 | no_attr_identifier_or_typedef_name enumerator_value_opt |
---|
1471 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
1472 | | enumerator_list ',' no_attr_identifier_or_typedef_name enumerator_value_opt |
---|
1473 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
1474 | ; |
---|
1475 | |
---|
1476 | enumerator_value_opt: |
---|
1477 | /* empty */ |
---|
1478 | { $$ = 0; } |
---|
1479 | | '=' constant_expression |
---|
1480 | { $$ = $2; } |
---|
1481 | ; |
---|
1482 | |
---|
1483 | /* Minimum of one parameter after which ellipsis is allowed only at the end. */ |
---|
1484 | |
---|
1485 | new_parameter_type_list_opt: /* CFA */ |
---|
1486 | /* empty */ |
---|
1487 | { $$ = 0; } |
---|
1488 | | new_parameter_type_list |
---|
1489 | ; |
---|
1490 | |
---|
1491 | new_parameter_type_list: /* CFA, abstract + real */ |
---|
1492 | new_abstract_parameter_list |
---|
1493 | | new_parameter_list |
---|
1494 | | new_parameter_list pop ',' push new_abstract_parameter_list |
---|
1495 | { $$ = $1->appendList( $5 ); } |
---|
1496 | | new_abstract_parameter_list pop ',' push ELLIPSIS |
---|
1497 | { $$ = $1->addVarArgs(); } |
---|
1498 | | new_parameter_list pop ',' push ELLIPSIS |
---|
1499 | { $$ = $1->addVarArgs(); } |
---|
1500 | ; |
---|
1501 | |
---|
1502 | new_parameter_list: /* CFA */ |
---|
1503 | /* To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last |
---|
1504 | new_abstract_parameter_list is factored out from new_parameter_list, flattening the rules |
---|
1505 | to get lookahead to the ']'. */ |
---|
1506 | new_parameter_declaration |
---|
1507 | | new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
1508 | { $$ = $1->appendList( $5 ); } |
---|
1509 | | new_parameter_list pop ',' push new_parameter_declaration |
---|
1510 | { $$ = $1->appendList( $5 ); } |
---|
1511 | | new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
1512 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
1513 | ; |
---|
1514 | |
---|
1515 | new_abstract_parameter_list: /* CFA, new & old style abstract */ |
---|
1516 | new_abstract_parameter_declaration |
---|
1517 | | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration |
---|
1518 | { $$ = $1->appendList( $5 ); } |
---|
1519 | ; |
---|
1520 | |
---|
1521 | parameter_type_list_opt: |
---|
1522 | /* empty */ |
---|
1523 | { $$ = 0; } |
---|
1524 | | parameter_type_list |
---|
1525 | ; |
---|
1526 | |
---|
1527 | parameter_type_list: |
---|
1528 | parameter_list |
---|
1529 | | parameter_list pop ',' push ELLIPSIS |
---|
1530 | { $$ = $1->addVarArgs(); } |
---|
1531 | ; |
---|
1532 | |
---|
1533 | parameter_list: /* abstract + real */ |
---|
1534 | abstract_parameter_declaration |
---|
1535 | | parameter_declaration |
---|
1536 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
1537 | { $$ = $1->appendList( $5 ); } |
---|
1538 | | parameter_list pop ',' push parameter_declaration |
---|
1539 | { $$ = $1->appendList( $5 ); } |
---|
1540 | ; |
---|
1541 | |
---|
1542 | /* Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different |
---|
1543 | semantics for typedef name by using typedef_parameter_redeclarator instead of typedef_redeclarator, and |
---|
1544 | function prototypes. */ |
---|
1545 | |
---|
1546 | new_parameter_declaration: /* CFA, new & old style parameter declaration */ |
---|
1547 | parameter_declaration |
---|
1548 | | new_identifier_parameter_declarator_no_tuple identifier_or_typedef_name assignment_opt |
---|
1549 | { $$ = $1->addName( $2 ); } |
---|
1550 | | new_abstract_tuple identifier_or_typedef_name assignment_opt |
---|
1551 | /* To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). */ |
---|
1552 | { $$ = $1->addName( $2 ); } |
---|
1553 | | type_qualifier_list new_abstract_tuple identifier_or_typedef_name assignment_opt |
---|
1554 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
1555 | | new_function_specifier |
---|
1556 | ; |
---|
1557 | |
---|
1558 | new_abstract_parameter_declaration: /* CFA, new & old style parameter declaration */ |
---|
1559 | abstract_parameter_declaration |
---|
1560 | | new_identifier_parameter_declarator_no_tuple |
---|
1561 | | new_abstract_tuple |
---|
1562 | /* To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). */ |
---|
1563 | | type_qualifier_list new_abstract_tuple |
---|
1564 | { $$ = $2->addQualifiers( $1 ); } |
---|
1565 | | new_abstract_function |
---|
1566 | ; |
---|
1567 | |
---|
1568 | parameter_declaration: |
---|
1569 | declaration_specifier identifier_parameter_declarator assignment_opt |
---|
1570 | { |
---|
1571 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
1572 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode($3) ); |
---|
1573 | } |
---|
1574 | | declaration_specifier typedef_parameter_redeclarator assignment_opt |
---|
1575 | { |
---|
1576 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
1577 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode($3) ); |
---|
1578 | } |
---|
1579 | ; |
---|
1580 | |
---|
1581 | abstract_parameter_declaration: |
---|
1582 | declaration_specifier |
---|
1583 | | declaration_specifier abstract_parameter_declarator |
---|
1584 | { $$ = $2->addType( $1 ); } |
---|
1585 | ; |
---|
1586 | |
---|
1587 | /* ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
1588 | parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is |
---|
1589 | based only on identifiers. The ANSI-style parameter-list can redefine a typedef name. */ |
---|
1590 | |
---|
1591 | identifier_list: /* K&R-style parameter list => no types */ |
---|
1592 | no_attr_identifier |
---|
1593 | { $$ = DeclarationNode::newName( $1 ); } |
---|
1594 | | identifier_list ',' no_attr_identifier |
---|
1595 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
1596 | ; |
---|
1597 | |
---|
1598 | identifier_or_typedef_name: |
---|
1599 | identifier |
---|
1600 | | TYPEDEFname |
---|
1601 | | TYPEGENname |
---|
1602 | ; |
---|
1603 | |
---|
1604 | no_01_identifier_or_typedef_name: |
---|
1605 | no_01_identifier |
---|
1606 | | TYPEDEFname |
---|
1607 | | TYPEGENname |
---|
1608 | ; |
---|
1609 | |
---|
1610 | no_attr_identifier_or_typedef_name: |
---|
1611 | no_attr_identifier |
---|
1612 | | TYPEDEFname |
---|
1613 | | TYPEGENname |
---|
1614 | ; |
---|
1615 | |
---|
1616 | type_name_no_function: /* sizeof, alignof, cast (constructor) */ |
---|
1617 | new_abstract_declarator_tuple /* CFA */ |
---|
1618 | | type_specifier |
---|
1619 | | type_specifier variable_abstract_declarator |
---|
1620 | { $$ = $2->addType( $1 ); } |
---|
1621 | ; |
---|
1622 | |
---|
1623 | type_name: /* typeof, assertion */ |
---|
1624 | new_abstract_declarator_tuple /* CFA */ |
---|
1625 | | new_abstract_function /* CFA */ |
---|
1626 | | type_specifier |
---|
1627 | | type_specifier abstract_declarator |
---|
1628 | { $$ = $2->addType( $1 ); } |
---|
1629 | ; |
---|
1630 | |
---|
1631 | initializer_opt: |
---|
1632 | /* empty */ { $$ = 0; } |
---|
1633 | | '=' initializer { $$ = $2; } |
---|
1634 | ; |
---|
1635 | |
---|
1636 | initializer: |
---|
1637 | assignment_expression { $$ = new InitializerNode($1); } |
---|
1638 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode($2, true); } |
---|
1639 | ; |
---|
1640 | |
---|
1641 | initializer_list: |
---|
1642 | initializer |
---|
1643 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
1644 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_link($3) ); } |
---|
1645 | | initializer_list ',' designation initializer |
---|
1646 | { $$ = (InitializerNode *)( $1->set_link( $4->set_designators($3) ) ); } |
---|
1647 | ; |
---|
1648 | |
---|
1649 | /* There is an unreconcileable parsing problem between ANSI99 and CFA with respect to designators. The problem |
---|
1650 | is use of '=' to separator the designator from the initializer value, as in: |
---|
1651 | |
---|
1652 | int x[10] = { [1] = 3 }; |
---|
1653 | |
---|
1654 | The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this |
---|
1655 | case, CFA changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC |
---|
1656 | does uses ":" for field selection. The optional use of the "=" in GCC, or in this case ":", cannot be |
---|
1657 | supported either due to shift/reduce conflicts */ |
---|
1658 | |
---|
1659 | designation: |
---|
1660 | designator_list ':' /* ANSI99, CFA uses ":" instead of "=" */ |
---|
1661 | | no_attr_identifier_or_typedef_name ':' /* GCC, field name */ |
---|
1662 | { $$ = new VarRefNode( $1 ); } |
---|
1663 | ; |
---|
1664 | |
---|
1665 | designator_list: /* ANSI99 */ |
---|
1666 | designator |
---|
1667 | | designator_list designator { $$ = (ExpressionNode *)($1->set_link( $2 )); } |
---|
1668 | ; |
---|
1669 | |
---|
1670 | designator: |
---|
1671 | '.' no_attr_identifier_or_typedef_name /* ANSI99, field name */ |
---|
1672 | { $$ = new VarRefNode( $2 ); } |
---|
1673 | | '[' push assignment_expression pop ']' /* ANSI99, single array element */ |
---|
1674 | /* assignment_expression used instead of constant_expression because of shift/reduce conflicts |
---|
1675 | with tuple. */ |
---|
1676 | { $$ = $3; } |
---|
1677 | | '[' push subrange pop ']' /* CFA, multiple array elements */ |
---|
1678 | { $$ = $3; } |
---|
1679 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' /* GCC, multiple array elements */ |
---|
1680 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range), $3, $5); } |
---|
1681 | | '.' '[' push field_list pop ']' /* CFA, tuple field selector */ |
---|
1682 | { $$ = $4; } |
---|
1683 | ; |
---|
1684 | |
---|
1685 | /* The CFA type system is based on parametric polymorphism, the ability to declare functions with type |
---|
1686 | parameters, rather than an object-oriented type system. This required four groups of extensions: |
---|
1687 | |
---|
1688 | Overloading: function, data, and operator identifiers may be overloaded. |
---|
1689 | |
---|
1690 | Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used |
---|
1691 | for object and incomplete types, and "ftype" is used for function types. Type declarations with |
---|
1692 | initializers provide definitions of new types. Type declarations with storage class "extern" provide |
---|
1693 | opaque types. |
---|
1694 | |
---|
1695 | Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at |
---|
1696 | the call site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
1697 | |
---|
1698 | Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
1699 | types. They serve many of the purposes of abstract classes, and specification hierarchies resemble |
---|
1700 | subclass hierarchies. Unlike classes, they can define relationships between types. Assertions declare |
---|
1701 | that a type or types provide the operations declared by a specification. Assertions are normally used |
---|
1702 | to declare requirements on type arguments of polymorphic functions. */ |
---|
1703 | |
---|
1704 | typegen_declaration_specifier: /* CFA */ |
---|
1705 | typegen_type_specifier |
---|
1706 | | declaration_qualifier_list typegen_type_specifier |
---|
1707 | { $$ = $2->addQualifiers( $1 ); } |
---|
1708 | | typegen_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
1709 | { $$ = $1->addQualifiers( $2 ); } |
---|
1710 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
1711 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
1712 | ; |
---|
1713 | |
---|
1714 | typegen_type_specifier: /* CFA */ |
---|
1715 | TYPEGENname '(' type_name_list ')' |
---|
1716 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
1717 | | type_qualifier_list TYPEGENname '(' type_name_list ')' |
---|
1718 | { $$ = DeclarationNode::newFromTypeGen( $2, $4 )->addQualifiers( $1 ); } |
---|
1719 | | typegen_type_specifier type_qualifier |
---|
1720 | { $$ = $1->addQualifiers( $2 ); } |
---|
1721 | ; |
---|
1722 | |
---|
1723 | type_parameter_list: /* CFA */ |
---|
1724 | type_parameter assignment_opt |
---|
1725 | | type_parameter_list ',' type_parameter assignment_opt |
---|
1726 | { $$ = $1->appendList( $3 ); } |
---|
1727 | ; |
---|
1728 | |
---|
1729 | type_parameter: /* CFA */ |
---|
1730 | type_class no_attr_identifier_or_typedef_name |
---|
1731 | { typedefTable.addToEnclosingScope(*($2), TypedefTable::TD); } |
---|
1732 | assertion_list_opt |
---|
1733 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
1734 | | type_specifier identifier_parameter_declarator |
---|
1735 | ; |
---|
1736 | |
---|
1737 | type_class: /* CFA */ |
---|
1738 | TYPE |
---|
1739 | { $$ = DeclarationNode::Type; } |
---|
1740 | | DTYPE |
---|
1741 | { $$ = DeclarationNode::Ftype; } |
---|
1742 | | FTYPE |
---|
1743 | { $$ = DeclarationNode::Dtype; } |
---|
1744 | ; |
---|
1745 | |
---|
1746 | assertion_list_opt: /* CFA */ |
---|
1747 | /* empty */ |
---|
1748 | { $$ = 0; } |
---|
1749 | | assertion_list_opt assertion |
---|
1750 | { $$ = $1 == 0 ? $2 : $1->appendList( $2 ); } |
---|
1751 | ; |
---|
1752 | |
---|
1753 | assertion: /* CFA */ |
---|
1754 | '|' no_attr_identifier_or_typedef_name '(' type_name_list ')' |
---|
1755 | { |
---|
1756 | typedefTable.openContext( *($2) ); |
---|
1757 | $$ = DeclarationNode::newContextUse( $2, $4 ); |
---|
1758 | } |
---|
1759 | | '|' '{' push context_declaration_list '}' |
---|
1760 | { $$ = $4; } |
---|
1761 | | '|' '(' push type_parameter_list pop ')' '{' push context_declaration_list '}' '(' type_name_list ')' |
---|
1762 | { $$ = 0; } |
---|
1763 | ; |
---|
1764 | |
---|
1765 | type_name_list: /* CFA */ |
---|
1766 | type_name |
---|
1767 | { $$ = new TypeValueNode( $1 ); } |
---|
1768 | | assignment_expression |
---|
1769 | | type_name_list ',' type_name |
---|
1770 | { $$ = (ExpressionNode *)($1->set_link(new TypeValueNode( $3 ))); } |
---|
1771 | | type_name_list ',' assignment_expression |
---|
1772 | { $$ = (ExpressionNode *)($1->set_link($3)); } |
---|
1773 | ; |
---|
1774 | |
---|
1775 | type_declaring_list: /* CFA */ |
---|
1776 | TYPE type_declarator |
---|
1777 | { $$ = $2; } |
---|
1778 | | storage_class_list TYPE type_declarator |
---|
1779 | { $$ = $3->addQualifiers( $1 ); } |
---|
1780 | | type_declaring_list ',' type_declarator |
---|
1781 | { $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); } |
---|
1782 | ; |
---|
1783 | |
---|
1784 | type_declarator: /* CFA */ |
---|
1785 | type_declarator_name assertion_list_opt |
---|
1786 | { $$ = $1->addAssertions( $2 ); } |
---|
1787 | | type_declarator_name assertion_list_opt '=' type_name |
---|
1788 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
1789 | ; |
---|
1790 | |
---|
1791 | type_declarator_name: /* CFA */ |
---|
1792 | no_attr_identifier_or_typedef_name |
---|
1793 | { |
---|
1794 | typedefTable.addToEnclosingScope(*($1), TypedefTable::TD); |
---|
1795 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
1796 | } |
---|
1797 | | no_01_identifier_or_typedef_name '(' push type_parameter_list pop ')' |
---|
1798 | { |
---|
1799 | typedefTable.addToEnclosingScope(*($1), TypedefTable::TG); |
---|
1800 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
1801 | } |
---|
1802 | ; |
---|
1803 | |
---|
1804 | context_specifier: /* CFA */ |
---|
1805 | CONTEXT no_attr_identifier_or_typedef_name '(' push type_parameter_list pop ')' '{' '}' |
---|
1806 | { |
---|
1807 | typedefTable.addToEnclosingScope(*($2), TypedefTable::ID); |
---|
1808 | $$ = DeclarationNode::newContext( $2, $5, 0 ); |
---|
1809 | } |
---|
1810 | | CONTEXT no_attr_identifier_or_typedef_name '(' push type_parameter_list pop ')' '{' |
---|
1811 | { |
---|
1812 | typedefTable.enterContext( *($2) ); |
---|
1813 | typedefTable.enterScope(); |
---|
1814 | } |
---|
1815 | context_declaration_list '}' |
---|
1816 | { |
---|
1817 | typedefTable.leaveContext(); |
---|
1818 | typedefTable.addToEnclosingScope(*($2), TypedefTable::ID); |
---|
1819 | $$ = DeclarationNode::newContext( $2, $5, $10 ); |
---|
1820 | } |
---|
1821 | ; |
---|
1822 | |
---|
1823 | context_declaration_list: /* CFA */ |
---|
1824 | context_declaration |
---|
1825 | | context_declaration_list push context_declaration |
---|
1826 | { $$ = $1->appendList( $3 ); } |
---|
1827 | ; |
---|
1828 | |
---|
1829 | context_declaration: /* CFA */ |
---|
1830 | new_context_declaring_list pop ';' |
---|
1831 | | context_declaring_list pop ';' |
---|
1832 | ; |
---|
1833 | |
---|
1834 | new_context_declaring_list: /* CFA */ |
---|
1835 | new_variable_specifier |
---|
1836 | { |
---|
1837 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
1838 | $$ = $1; |
---|
1839 | } |
---|
1840 | | new_function_specifier |
---|
1841 | { |
---|
1842 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
1843 | $$ = $1; |
---|
1844 | } |
---|
1845 | | new_context_declaring_list pop ',' push identifier_or_typedef_name |
---|
1846 | { |
---|
1847 | typedefTable.addToEnclosingScope2( *($5), TypedefTable::ID ); |
---|
1848 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
1849 | } |
---|
1850 | ; |
---|
1851 | |
---|
1852 | context_declaring_list: /* CFA */ |
---|
1853 | type_specifier declarator |
---|
1854 | { |
---|
1855 | typedefTable.addToEnclosingScope2( TypedefTable::ID); |
---|
1856 | $$ = $2->addType( $1 ); |
---|
1857 | } |
---|
1858 | | context_declaring_list pop ',' push declarator |
---|
1859 | { |
---|
1860 | typedefTable.addToEnclosingScope2( TypedefTable::ID); |
---|
1861 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
1862 | } |
---|
1863 | ; |
---|
1864 | |
---|
1865 | /***************************** EXTERNAL DEFINITIONS *****************************/ |
---|
1866 | |
---|
1867 | translation_unit: |
---|
1868 | /* empty */ /* empty input file */ |
---|
1869 | {} |
---|
1870 | | external_definition_list |
---|
1871 | { |
---|
1872 | if( theTree ) { |
---|
1873 | theTree->appendList( $1 ); |
---|
1874 | } else { |
---|
1875 | theTree = $1; |
---|
1876 | } |
---|
1877 | } |
---|
1878 | ; |
---|
1879 | |
---|
1880 | external_definition_list: |
---|
1881 | external_definition |
---|
1882 | | external_definition_list push external_definition |
---|
1883 | { |
---|
1884 | if( $1 ) { |
---|
1885 | $$ = $1->appendList( $3 ); |
---|
1886 | } else { |
---|
1887 | $$ = $3; |
---|
1888 | } |
---|
1889 | } |
---|
1890 | ; |
---|
1891 | |
---|
1892 | external_definition_list_opt: |
---|
1893 | /* empty */ |
---|
1894 | { |
---|
1895 | $$ = 0; |
---|
1896 | } |
---|
1897 | | external_definition_list |
---|
1898 | ; |
---|
1899 | |
---|
1900 | external_definition: |
---|
1901 | declaration |
---|
1902 | | function_definition |
---|
1903 | | asm_statement /* GCC, global assembler statement */ |
---|
1904 | {} |
---|
1905 | | EXTERN STRINGliteral |
---|
1906 | { |
---|
1907 | linkageStack.push( linkage ); |
---|
1908 | linkage = LinkageSpec::fromString( *$2 ); |
---|
1909 | } |
---|
1910 | '{' external_definition_list_opt '}' /* C++-style linkage specifier */ |
---|
1911 | { |
---|
1912 | linkage = linkageStack.top(); |
---|
1913 | linkageStack.pop(); |
---|
1914 | $$ = $5; |
---|
1915 | } |
---|
1916 | | EXTENSION external_definition |
---|
1917 | { $$ = $2; } |
---|
1918 | ; |
---|
1919 | |
---|
1920 | function_definition: |
---|
1921 | new_function_specifier compound_statement /* CFA */ |
---|
1922 | { |
---|
1923 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1924 | typedefTable.leaveScope(); |
---|
1925 | $$ = $1->addFunctionBody( $2 ); |
---|
1926 | } |
---|
1927 | | declaration_qualifier_list new_function_specifier compound_statement /* CFA */ |
---|
1928 | /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is |
---|
1929 | necessary to preclude them as a type_qualifier cannot appear in this context. */ |
---|
1930 | { |
---|
1931 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1932 | typedefTable.leaveScope(); |
---|
1933 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
1934 | } |
---|
1935 | |
---|
1936 | | declaration_specifier function_declarator compound_statement |
---|
1937 | { |
---|
1938 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1939 | typedefTable.leaveScope(); |
---|
1940 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
1941 | } |
---|
1942 | |
---|
1943 | /* These rules are a concession to the "implicit int" type_specifier because there is a |
---|
1944 | significant amount of code with functions missing a type-specifier on the return type. |
---|
1945 | Parsing is possible because function_definition does not appear in the context of an |
---|
1946 | expression (nested functions would preclude this concession). A function prototype |
---|
1947 | declaration must still have a type_specifier. OBSOLESCENT (see 1) */ |
---|
1948 | | function_declarator compound_statement |
---|
1949 | { |
---|
1950 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1951 | typedefTable.leaveScope(); |
---|
1952 | $$ = $1->addFunctionBody( $2 ); |
---|
1953 | } |
---|
1954 | | type_qualifier_list function_declarator compound_statement |
---|
1955 | { |
---|
1956 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1957 | typedefTable.leaveScope(); |
---|
1958 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
1959 | } |
---|
1960 | | declaration_qualifier_list function_declarator compound_statement |
---|
1961 | { |
---|
1962 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1963 | typedefTable.leaveScope(); |
---|
1964 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
1965 | } |
---|
1966 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
1967 | { |
---|
1968 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1969 | typedefTable.leaveScope(); |
---|
1970 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
1971 | } |
---|
1972 | |
---|
1973 | /* Old-style K&R function definition, OBSOLESCENT (see 4) */ |
---|
1974 | | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement |
---|
1975 | { |
---|
1976 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1977 | typedefTable.leaveScope(); |
---|
1978 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
1979 | } |
---|
1980 | | old_function_declarator push old_declaration_list_opt compound_statement |
---|
1981 | { |
---|
1982 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1983 | typedefTable.leaveScope(); |
---|
1984 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
1985 | } |
---|
1986 | | type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
1987 | { |
---|
1988 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1989 | typedefTable.leaveScope(); |
---|
1990 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
1991 | } |
---|
1992 | |
---|
1993 | /* Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) */ |
---|
1994 | | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
1995 | { |
---|
1996 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
1997 | typedefTable.leaveScope(); |
---|
1998 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
1999 | } |
---|
2000 | | declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt |
---|
2001 | compound_statement |
---|
2002 | { |
---|
2003 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
2004 | typedefTable.leaveScope(); |
---|
2005 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
2006 | } |
---|
2007 | ; |
---|
2008 | |
---|
2009 | declarator: |
---|
2010 | variable_declarator |
---|
2011 | | function_declarator |
---|
2012 | | typedef_redeclarator |
---|
2013 | ; |
---|
2014 | |
---|
2015 | subrange: |
---|
2016 | constant_expression '~' constant_expression /* CFA, integer subrange */ |
---|
2017 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range), $1, $3); } |
---|
2018 | ; |
---|
2019 | |
---|
2020 | asm_name_opt: /* GCC */ |
---|
2021 | /* empty */ |
---|
2022 | | ASM '(' string_literal_list ')' attribute_list_opt |
---|
2023 | ; |
---|
2024 | |
---|
2025 | attribute_list_opt: /* GCC */ |
---|
2026 | /* empty */ |
---|
2027 | | attribute_list |
---|
2028 | ; |
---|
2029 | |
---|
2030 | attribute_list: /* GCC */ |
---|
2031 | attribute |
---|
2032 | | attribute_list attribute |
---|
2033 | ; |
---|
2034 | |
---|
2035 | attribute: /* GCC */ |
---|
2036 | ATTRIBUTE '(' '(' attribute_parameter_list ')' ')' |
---|
2037 | ; |
---|
2038 | |
---|
2039 | attribute_parameter_list: /* GCC */ |
---|
2040 | attrib |
---|
2041 | | attribute_parameter_list ',' attrib |
---|
2042 | ; |
---|
2043 | |
---|
2044 | attrib: /* GCC */ |
---|
2045 | /* empty */ |
---|
2046 | | any_word |
---|
2047 | | any_word '(' comma_expression_opt ')' |
---|
2048 | ; |
---|
2049 | |
---|
2050 | any_word: /* GCC */ |
---|
2051 | identifier_or_typedef_name {} |
---|
2052 | | storage_class_name {} |
---|
2053 | | basic_type_name {} |
---|
2054 | | type_qualifier {} |
---|
2055 | ; |
---|
2056 | |
---|
2057 | /* ============================================================================ |
---|
2058 | The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are |
---|
2059 | necessary because the type of an identifier in wrapped around the identifier in the same form as its usage |
---|
2060 | in an expression, as in: |
---|
2061 | |
---|
2062 | int (*f())[10] { ... }; |
---|
2063 | ... (*f())[3] += 1; // definition mimics usage |
---|
2064 | |
---|
2065 | Because these patterns are highly recursive, changes at a lower level in the recursion require copying some |
---|
2066 | or all of the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a |
---|
2067 | particular context. |
---|
2068 | ============================================================================ */ |
---|
2069 | |
---|
2070 | /* ---------------------------------------------------------------------------- |
---|
2071 | The set of valid declarators before a compound statement for defining a function is less than the set of |
---|
2072 | declarators to define a variable or function prototype, e.g.: |
---|
2073 | |
---|
2074 | valid declaration invalid definition |
---|
2075 | ----------------- ------------------ |
---|
2076 | int f; int f {} |
---|
2077 | int *f; int *f {} |
---|
2078 | int f[10]; int f[10] {} |
---|
2079 | int (*f)(int); int (*f)(int) {} |
---|
2080 | |
---|
2081 | To preclude this syntactic anomaly requires separating the grammar rules for variable and function |
---|
2082 | declarators, hence variable_declarator and function_declarator. |
---|
2083 | ---------------------------------------------------------------------------- */ |
---|
2084 | |
---|
2085 | /* This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern |
---|
2086 | precludes declaring an array of functions versus a pointer to an array of functions. */ |
---|
2087 | |
---|
2088 | variable_declarator: |
---|
2089 | paren_identifier attribute_list_opt |
---|
2090 | | variable_ptr |
---|
2091 | | variable_array attribute_list_opt |
---|
2092 | | variable_function attribute_list_opt |
---|
2093 | ; |
---|
2094 | |
---|
2095 | paren_identifier: |
---|
2096 | identifier |
---|
2097 | { |
---|
2098 | typedefTable.setNextIdentifier( *($1) ); |
---|
2099 | $$ = DeclarationNode::newName( $1 ); |
---|
2100 | } |
---|
2101 | | '(' paren_identifier ')' /* redundant parenthesis */ |
---|
2102 | { $$ = $2; } |
---|
2103 | ; |
---|
2104 | |
---|
2105 | variable_ptr: |
---|
2106 | '*' variable_declarator |
---|
2107 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2108 | | '*' type_qualifier_list variable_declarator |
---|
2109 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2110 | | '(' variable_ptr ')' |
---|
2111 | { $$ = $2; } |
---|
2112 | ; |
---|
2113 | |
---|
2114 | variable_array: |
---|
2115 | paren_identifier array_dimension |
---|
2116 | { $$ = $1->addArray( $2 ); } |
---|
2117 | | '(' variable_ptr ')' array_dimension |
---|
2118 | { $$ = $2->addArray( $4 ); } |
---|
2119 | | '(' variable_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2120 | { $$ = $2->addArray( $4 ); } |
---|
2121 | | '(' variable_array ')' /* redundant parenthesis */ |
---|
2122 | { $$ = $2; } |
---|
2123 | ; |
---|
2124 | |
---|
2125 | variable_function: |
---|
2126 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2127 | { $$ = $2->addParamList( $6 ); } |
---|
2128 | | '(' variable_function ')' /* redundant parenthesis */ |
---|
2129 | { $$ = $2; } |
---|
2130 | ; |
---|
2131 | |
---|
2132 | /* This pattern parses a function declarator that is not redefining a typedef name. Because functions cannot |
---|
2133 | be nested, there is no context where a function definition can redefine a typedef name. To allow nested |
---|
2134 | functions requires further separation of variable and function declarators in typedef_redeclarator. The |
---|
2135 | pattern precludes returning arrays and functions versus pointers to arrays and functions. */ |
---|
2136 | |
---|
2137 | function_declarator: |
---|
2138 | function_no_ptr attribute_list_opt |
---|
2139 | | function_ptr |
---|
2140 | | function_array attribute_list_opt |
---|
2141 | ; |
---|
2142 | |
---|
2143 | function_no_ptr: |
---|
2144 | paren_identifier '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2145 | { $$ = $1->addParamList( $4 ); } |
---|
2146 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
2147 | { $$ = $2->addParamList( $6 ); } |
---|
2148 | | '(' function_no_ptr ')' /* redundant parenthesis */ |
---|
2149 | { $$ = $2; } |
---|
2150 | ; |
---|
2151 | |
---|
2152 | function_ptr: |
---|
2153 | '*' function_declarator |
---|
2154 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2155 | | '*' type_qualifier_list function_declarator |
---|
2156 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2157 | | '(' function_ptr ')' |
---|
2158 | { $$ = $2; } |
---|
2159 | ; |
---|
2160 | |
---|
2161 | function_array: |
---|
2162 | '(' function_ptr ')' array_dimension |
---|
2163 | { $$ = $2->addArray( $4 ); } |
---|
2164 | | '(' function_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2165 | { $$ = $2->addArray( $4 ); } |
---|
2166 | | '(' function_array ')' /* redundant parenthesis */ |
---|
2167 | { $$ = $2; } |
---|
2168 | ; |
---|
2169 | |
---|
2170 | /* This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a |
---|
2171 | typedef name (see function_declarator for additional comments). The pattern precludes returning arrays and |
---|
2172 | functions versus pointers to arrays and functions. */ |
---|
2173 | |
---|
2174 | old_function_declarator: |
---|
2175 | old_function_no_ptr |
---|
2176 | | old_function_ptr |
---|
2177 | | old_function_array |
---|
2178 | ; |
---|
2179 | |
---|
2180 | old_function_no_ptr: |
---|
2181 | paren_identifier '(' identifier_list ')' /* function_declarator handles empty parameter */ |
---|
2182 | { $$ = $1->addIdList( $3 ); } |
---|
2183 | | '(' old_function_ptr ')' '(' identifier_list ')' |
---|
2184 | { $$ = $2->addIdList( $5 ); } |
---|
2185 | | '(' old_function_no_ptr ')' /* redundant parenthesis */ |
---|
2186 | { $$ = $2; } |
---|
2187 | ; |
---|
2188 | |
---|
2189 | old_function_ptr: |
---|
2190 | '*' old_function_declarator |
---|
2191 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2192 | | '*' type_qualifier_list old_function_declarator |
---|
2193 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2194 | | '(' old_function_ptr ')' |
---|
2195 | { $$ = $2; } |
---|
2196 | ; |
---|
2197 | |
---|
2198 | old_function_array: |
---|
2199 | '(' old_function_ptr ')' array_dimension |
---|
2200 | { $$ = $2->addArray( $4 ); } |
---|
2201 | | '(' old_function_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2202 | { $$ = $2->addArray( $4 ); } |
---|
2203 | | '(' old_function_array ')' /* redundant parenthesis */ |
---|
2204 | { $$ = $2; } |
---|
2205 | ; |
---|
2206 | |
---|
2207 | /* This pattern parses a declaration for a variable or function prototype that redefines a typedef name, e.g.: |
---|
2208 | |
---|
2209 | typedef int foo; |
---|
2210 | { |
---|
2211 | int foo; // redefine typedef name in new scope |
---|
2212 | } |
---|
2213 | |
---|
2214 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
2215 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
2216 | |
---|
2217 | typedef_redeclarator: |
---|
2218 | paren_typedef attribute_list_opt |
---|
2219 | | typedef_ptr |
---|
2220 | | typedef_array attribute_list_opt |
---|
2221 | | typedef_function attribute_list_opt |
---|
2222 | ; |
---|
2223 | |
---|
2224 | paren_typedef: |
---|
2225 | TYPEDEFname |
---|
2226 | { |
---|
2227 | typedefTable.setNextIdentifier( *($1) ); |
---|
2228 | $$ = DeclarationNode::newName( $1 ); |
---|
2229 | } |
---|
2230 | | '(' paren_typedef ')' |
---|
2231 | { $$ = $2; } |
---|
2232 | ; |
---|
2233 | |
---|
2234 | typedef_ptr: |
---|
2235 | '*' typedef_redeclarator |
---|
2236 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2237 | | '*' type_qualifier_list typedef_redeclarator |
---|
2238 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2239 | | '(' typedef_ptr ')' |
---|
2240 | { $$ = $2; } |
---|
2241 | ; |
---|
2242 | |
---|
2243 | typedef_array: |
---|
2244 | paren_typedef array_dimension |
---|
2245 | { $$ = $1->addArray( $2 ); } |
---|
2246 | | '(' typedef_ptr ')' array_dimension |
---|
2247 | { $$ = $2->addArray( $4 ); } |
---|
2248 | | '(' typedef_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2249 | { $$ = $2->addArray( $4 ); } |
---|
2250 | | '(' typedef_array ')' /* redundant parenthesis */ |
---|
2251 | { $$ = $2; } |
---|
2252 | ; |
---|
2253 | |
---|
2254 | typedef_function: |
---|
2255 | paren_typedef '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2256 | { $$ = $1->addParamList( $4 ); } |
---|
2257 | | '(' typedef_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2258 | { $$ = $2->addParamList( $6 ); } |
---|
2259 | | '(' typedef_function ')' /* redundant parenthesis */ |
---|
2260 | { $$ = $2; } |
---|
2261 | ; |
---|
2262 | |
---|
2263 | /* This pattern parses a declaration for a parameter variable or function prototype that is not redefining a |
---|
2264 | typedef name and allows the ANSI99 array options, which can only appear in a parameter list. The pattern |
---|
2265 | precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
2266 | and functions versus pointers to arrays and functions. */ |
---|
2267 | |
---|
2268 | identifier_parameter_declarator: |
---|
2269 | paren_identifier attribute_list_opt |
---|
2270 | | identifier_parameter_ptr |
---|
2271 | | identifier_parameter_array attribute_list_opt |
---|
2272 | | identifier_parameter_function attribute_list_opt |
---|
2273 | ; |
---|
2274 | |
---|
2275 | identifier_parameter_ptr: |
---|
2276 | '*' identifier_parameter_declarator |
---|
2277 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2278 | | '*' type_qualifier_list identifier_parameter_declarator |
---|
2279 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2280 | | '(' identifier_parameter_ptr ')' |
---|
2281 | { $$ = $2; } |
---|
2282 | ; |
---|
2283 | |
---|
2284 | identifier_parameter_array: |
---|
2285 | paren_identifier array_parameter_dimension |
---|
2286 | { $$ = $1->addArray( $2 ); } |
---|
2287 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
2288 | { $$ = $2->addArray( $4 ); } |
---|
2289 | | '(' identifier_parameter_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2290 | { $$ = $2->addArray( $4 ); } |
---|
2291 | | '(' identifier_parameter_array ')' /* redundant parenthesis */ |
---|
2292 | { $$ = $2; } |
---|
2293 | ; |
---|
2294 | |
---|
2295 | identifier_parameter_function: |
---|
2296 | paren_identifier '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2297 | { $$ = $1->addParamList( $4 ); } |
---|
2298 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2299 | { $$ = $2->addParamList( $6 ); } |
---|
2300 | | '(' identifier_parameter_function ')' /* redundant parenthesis */ |
---|
2301 | { $$ = $2; } |
---|
2302 | ; |
---|
2303 | |
---|
2304 | /* This pattern parses a declaration for a parameter variable or function prototype that is redefining a |
---|
2305 | typedef name, e.g.: |
---|
2306 | |
---|
2307 | typedef int foo; |
---|
2308 | int f( int foo ); // redefine typedef name in new scope |
---|
2309 | |
---|
2310 | and allows the ANSI99 array options, which can only appear in a parameter list. In addition, the pattern |
---|
2311 | handles the special meaning of parenthesis around a typedef name: |
---|
2312 | |
---|
2313 | ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
2314 | parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
2315 | not as redundant parentheses around the identifier." |
---|
2316 | |
---|
2317 | which precludes the following cases: |
---|
2318 | |
---|
2319 | typedef float T; |
---|
2320 | int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
2321 | int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
2322 | int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
2323 | int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
2324 | |
---|
2325 | In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type |
---|
2326 | list, and not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes |
---|
2327 | declaring an array of functions versus a pointer to an array of functions, and returning arrays and |
---|
2328 | functions versus pointers to arrays and functions. */ |
---|
2329 | |
---|
2330 | typedef_parameter_redeclarator: |
---|
2331 | typedef attribute_list_opt |
---|
2332 | | typedef_parameter_ptr |
---|
2333 | | typedef_parameter_array attribute_list_opt |
---|
2334 | | typedef_parameter_function attribute_list_opt |
---|
2335 | ; |
---|
2336 | |
---|
2337 | typedef: |
---|
2338 | TYPEDEFname |
---|
2339 | { |
---|
2340 | typedefTable.setNextIdentifier( *($1) ); |
---|
2341 | $$ = DeclarationNode::newName( $1 ); |
---|
2342 | } |
---|
2343 | ; |
---|
2344 | |
---|
2345 | typedef_parameter_ptr: |
---|
2346 | '*' typedef_parameter_redeclarator |
---|
2347 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2348 | | '*' type_qualifier_list typedef_parameter_redeclarator |
---|
2349 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2350 | | '(' typedef_parameter_ptr ')' |
---|
2351 | { $$ = $2; } |
---|
2352 | ; |
---|
2353 | |
---|
2354 | typedef_parameter_array: |
---|
2355 | typedef array_parameter_dimension |
---|
2356 | { $$ = $1->addArray( $2 ); } |
---|
2357 | | '(' typedef_parameter_ptr ')' array_parameter_dimension |
---|
2358 | { $$ = $2->addArray( $4 ); } |
---|
2359 | ; |
---|
2360 | |
---|
2361 | typedef_parameter_function: |
---|
2362 | typedef '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2363 | { $$ = $1->addParamList( $4 ); } |
---|
2364 | | '(' typedef_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2365 | { $$ = $2->addParamList( $6 ); } |
---|
2366 | ; |
---|
2367 | |
---|
2368 | /* This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no |
---|
2369 | identifier to which the type applies, e.g.: |
---|
2370 | |
---|
2371 | sizeof( int ); |
---|
2372 | sizeof( int [10] ); |
---|
2373 | |
---|
2374 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
2375 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
2376 | |
---|
2377 | abstract_declarator: |
---|
2378 | abstract_ptr |
---|
2379 | | abstract_array attribute_list_opt |
---|
2380 | | abstract_function attribute_list_opt |
---|
2381 | ; |
---|
2382 | |
---|
2383 | abstract_ptr: |
---|
2384 | '*' |
---|
2385 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
2386 | | '*' type_qualifier_list |
---|
2387 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
2388 | | '*' abstract_declarator |
---|
2389 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2390 | | '*' type_qualifier_list abstract_declarator |
---|
2391 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2392 | | '(' abstract_ptr ')' |
---|
2393 | { $$ = $2; } |
---|
2394 | ; |
---|
2395 | |
---|
2396 | abstract_array: |
---|
2397 | array_dimension |
---|
2398 | | '(' abstract_ptr ')' array_dimension |
---|
2399 | { $$ = $2->addArray( $4 ); } |
---|
2400 | | '(' abstract_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2401 | { $$ = $2->addArray( $4 ); } |
---|
2402 | | '(' abstract_array ')' /* redundant parenthesis */ |
---|
2403 | { $$ = $2; } |
---|
2404 | ; |
---|
2405 | |
---|
2406 | abstract_function: |
---|
2407 | '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2408 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
2409 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2410 | { $$ = $2->addParamList( $6 ); } |
---|
2411 | | '(' abstract_function ')' /* redundant parenthesis */ |
---|
2412 | { $$ = $2; } |
---|
2413 | ; |
---|
2414 | |
---|
2415 | array_dimension: |
---|
2416 | /* Only the first dimension can be empty. */ |
---|
2417 | '[' push pop ']' |
---|
2418 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
2419 | | '[' push pop ']' multi_array_dimension |
---|
2420 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $5 ); } |
---|
2421 | | multi_array_dimension |
---|
2422 | ; |
---|
2423 | |
---|
2424 | multi_array_dimension: |
---|
2425 | '[' push assignment_expression pop ']' |
---|
2426 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
2427 | | '[' push '*' pop ']' /* ANSI99 */ |
---|
2428 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
2429 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
2430 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
2431 | | multi_array_dimension '[' push '*' pop ']' /* ANSI99 */ |
---|
2432 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
2433 | ; |
---|
2434 | |
---|
2435 | /* This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
2436 | identifier to which the type applies, e.g.: |
---|
2437 | |
---|
2438 | int f( int ); // abstract variable parameter; no parameter name specified |
---|
2439 | int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
2440 | |
---|
2441 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
2442 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
2443 | |
---|
2444 | abstract_parameter_declarator: |
---|
2445 | abstract_parameter_ptr |
---|
2446 | | abstract_parameter_array attribute_list_opt |
---|
2447 | | abstract_parameter_function attribute_list_opt |
---|
2448 | ; |
---|
2449 | |
---|
2450 | abstract_parameter_ptr: |
---|
2451 | '*' |
---|
2452 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
2453 | | '*' type_qualifier_list |
---|
2454 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
2455 | | '*' abstract_parameter_declarator |
---|
2456 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2457 | | '*' type_qualifier_list abstract_parameter_declarator |
---|
2458 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2459 | | '(' abstract_parameter_ptr ')' |
---|
2460 | { $$ = $2; } |
---|
2461 | ; |
---|
2462 | |
---|
2463 | abstract_parameter_array: |
---|
2464 | array_parameter_dimension |
---|
2465 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
2466 | { $$ = $2->addArray( $4 ); } |
---|
2467 | | '(' abstract_parameter_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2468 | { $$ = $2->addArray( $4 ); } |
---|
2469 | | '(' abstract_parameter_array ')' /* redundant parenthesis */ |
---|
2470 | { $$ = $2; } |
---|
2471 | ; |
---|
2472 | |
---|
2473 | abstract_parameter_function: |
---|
2474 | '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2475 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
2476 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2477 | { $$ = $2->addParamList( $6 ); } |
---|
2478 | | '(' abstract_parameter_function ')' /* redundant parenthesis */ |
---|
2479 | { $$ = $2; } |
---|
2480 | ; |
---|
2481 | |
---|
2482 | array_parameter_dimension: |
---|
2483 | /* Only the first dimension can be empty or have qualifiers. */ |
---|
2484 | array_parameter_1st_dimension |
---|
2485 | | array_parameter_1st_dimension multi_array_dimension |
---|
2486 | { $$ = $1->addArray( $2 ); } |
---|
2487 | | multi_array_dimension |
---|
2488 | ; |
---|
2489 | |
---|
2490 | /* The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
2491 | |
---|
2492 | ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall |
---|
2493 | appear only in a declaration of a function parameter with an array type, and then only in the |
---|
2494 | outermost array type derivation." |
---|
2495 | */ |
---|
2496 | |
---|
2497 | array_parameter_1st_dimension: |
---|
2498 | '[' push pop ']' |
---|
2499 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
2500 | | '[' push type_qualifier_list '*' pop ']' /* remaining ANSI99 */ |
---|
2501 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
2502 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
2503 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
2504 | | '[' push STATIC assignment_expression pop ']' |
---|
2505 | { $$ = DeclarationNode::newArray( $4, 0, true ); } |
---|
2506 | | '[' push STATIC type_qualifier_list assignment_expression pop ']' |
---|
2507 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
2508 | ; |
---|
2509 | |
---|
2510 | /* This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type |
---|
2511 | applies, e.g.: |
---|
2512 | |
---|
2513 | sizeof( int ); // abstract variable; no identifier name specified |
---|
2514 | |
---|
2515 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
2516 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
2517 | |
---|
2518 | variable_abstract_declarator: |
---|
2519 | variable_abstract_ptr |
---|
2520 | | variable_abstract_array attribute_list_opt |
---|
2521 | | variable_abstract_function attribute_list_opt |
---|
2522 | ; |
---|
2523 | |
---|
2524 | variable_abstract_ptr: |
---|
2525 | '*' |
---|
2526 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
2527 | | '*' type_qualifier_list |
---|
2528 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
2529 | | '*' variable_abstract_declarator |
---|
2530 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2531 | | '*' type_qualifier_list variable_abstract_declarator |
---|
2532 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
2533 | | '(' variable_abstract_ptr ')' |
---|
2534 | { $$ = $2; } |
---|
2535 | ; |
---|
2536 | |
---|
2537 | variable_abstract_array: |
---|
2538 | array_dimension |
---|
2539 | | '(' variable_abstract_ptr ')' array_dimension |
---|
2540 | { $$ = $2->addArray( $4 ); } |
---|
2541 | | '(' variable_abstract_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
2542 | { $$ = $2->addArray( $4 ); } |
---|
2543 | | '(' variable_abstract_array ')' /* redundant parenthesis */ |
---|
2544 | { $$ = $2; } |
---|
2545 | ; |
---|
2546 | |
---|
2547 | variable_abstract_function: |
---|
2548 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
2549 | { $$ = $2->addParamList( $6 ); } |
---|
2550 | | '(' variable_abstract_function ')' /* redundant parenthesis */ |
---|
2551 | { $$ = $2; } |
---|
2552 | ; |
---|
2553 | |
---|
2554 | /* This pattern parses a new-style declaration for a parameter variable or function prototype that is either |
---|
2555 | an identifier or typedef name and allows the ANSI99 array options, which can only appear in a parameter |
---|
2556 | list. */ |
---|
2557 | |
---|
2558 | new_identifier_parameter_declarator_tuple: /* CFA */ |
---|
2559 | new_identifier_parameter_declarator_no_tuple |
---|
2560 | | new_abstract_tuple |
---|
2561 | | type_qualifier_list new_abstract_tuple |
---|
2562 | { $$ = $2->addQualifiers( $1 ); } |
---|
2563 | ; |
---|
2564 | |
---|
2565 | new_identifier_parameter_declarator_no_tuple: /* CFA */ |
---|
2566 | new_identifier_parameter_ptr |
---|
2567 | | new_identifier_parameter_array |
---|
2568 | ; |
---|
2569 | |
---|
2570 | new_identifier_parameter_ptr: /* CFA */ |
---|
2571 | '*' type_specifier |
---|
2572 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2573 | | type_qualifier_list '*' type_specifier |
---|
2574 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
2575 | | '*' new_abstract_function |
---|
2576 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2577 | | type_qualifier_list '*' new_abstract_function |
---|
2578 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
2579 | | '*' new_identifier_parameter_declarator_tuple |
---|
2580 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2581 | | type_qualifier_list '*' new_identifier_parameter_declarator_tuple |
---|
2582 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
2583 | ; |
---|
2584 | |
---|
2585 | new_identifier_parameter_array: /* CFA */ |
---|
2586 | /* Only the first dimension can be empty or have qualifiers. Empty dimension must be factored |
---|
2587 | out due to shift/reduce conflict with new-style empty (void) function return type. */ |
---|
2588 | '[' push pop ']' type_specifier |
---|
2589 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2590 | | new_array_parameter_1st_dimension type_specifier |
---|
2591 | { $$ = $2->addNewArray( $1 ); } |
---|
2592 | | '[' push pop ']' multi_array_dimension type_specifier |
---|
2593 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2594 | | new_array_parameter_1st_dimension multi_array_dimension type_specifier |
---|
2595 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
2596 | | multi_array_dimension type_specifier |
---|
2597 | { $$ = $2->addNewArray( $1 ); } |
---|
2598 | | '[' push pop ']' new_identifier_parameter_ptr |
---|
2599 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2600 | | new_array_parameter_1st_dimension new_identifier_parameter_ptr |
---|
2601 | { $$ = $2->addNewArray( $1 ); } |
---|
2602 | | '[' push pop ']' multi_array_dimension new_identifier_parameter_ptr |
---|
2603 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2604 | | new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr |
---|
2605 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
2606 | | multi_array_dimension new_identifier_parameter_ptr |
---|
2607 | { $$ = $2->addNewArray( $1 ); } |
---|
2608 | ; |
---|
2609 | |
---|
2610 | new_array_parameter_1st_dimension: |
---|
2611 | '[' push type_qualifier_list '*' pop ']' /* remaining ANSI99 */ |
---|
2612 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
2613 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
2614 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
2615 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
2616 | /* declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
2617 | assignment_expression, so a semantic check is necessary to preclude them as a |
---|
2618 | type_qualifier cannot appear in this context. */ |
---|
2619 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
2620 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
2621 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
2622 | ; |
---|
2623 | |
---|
2624 | /* This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is |
---|
2625 | no identifier to which the type applies, e.g.: |
---|
2626 | |
---|
2627 | [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
2628 | [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
2629 | |
---|
2630 | These rules need LR(3): |
---|
2631 | |
---|
2632 | new_abstract_tuple identifier_or_typedef_name |
---|
2633 | '[' new_parameter_list ']' identifier_or_typedef_name '(' new_parameter_type_list_opt ')' |
---|
2634 | |
---|
2635 | since a function return type can be syntactically identical to a tuple type: |
---|
2636 | |
---|
2637 | [int, int] t; |
---|
2638 | [int, int] f( int ); |
---|
2639 | |
---|
2640 | Therefore, it is necessary to look at the token after identifier_or_typedef_name to know when to reduce |
---|
2641 | new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow |
---|
2642 | the necessary lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and |
---|
2643 | tuple declarations are duplicated when appearing with new_function_specifier. */ |
---|
2644 | |
---|
2645 | new_abstract_declarator_tuple: /* CFA */ |
---|
2646 | new_abstract_tuple |
---|
2647 | | type_qualifier_list new_abstract_tuple |
---|
2648 | { $$ = $2->addQualifiers( $1 ); } |
---|
2649 | | new_abstract_declarator_no_tuple |
---|
2650 | ; |
---|
2651 | |
---|
2652 | new_abstract_declarator_no_tuple: /* CFA */ |
---|
2653 | new_abstract_ptr |
---|
2654 | | new_abstract_array |
---|
2655 | ; |
---|
2656 | |
---|
2657 | new_abstract_ptr: /* CFA */ |
---|
2658 | '*' type_specifier |
---|
2659 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2660 | | type_qualifier_list '*' type_specifier |
---|
2661 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
2662 | | '*' new_abstract_function |
---|
2663 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2664 | | type_qualifier_list '*' new_abstract_function |
---|
2665 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
2666 | | '*' new_abstract_declarator_tuple |
---|
2667 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
2668 | | type_qualifier_list '*' new_abstract_declarator_tuple |
---|
2669 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
2670 | ; |
---|
2671 | |
---|
2672 | new_abstract_array: /* CFA */ |
---|
2673 | /* Only the first dimension can be empty. Empty dimension must be factored out due to |
---|
2674 | shift/reduce conflict with empty (void) function return type. */ |
---|
2675 | '[' push pop ']' type_specifier |
---|
2676 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2677 | | '[' push pop ']' multi_array_dimension type_specifier |
---|
2678 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2679 | | multi_array_dimension type_specifier |
---|
2680 | { $$ = $2->addNewArray( $1 ); } |
---|
2681 | | '[' push pop ']' new_abstract_ptr |
---|
2682 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2683 | | '[' push pop ']' multi_array_dimension new_abstract_ptr |
---|
2684 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
2685 | | multi_array_dimension new_abstract_ptr |
---|
2686 | { $$ = $2->addNewArray( $1 ); } |
---|
2687 | ; |
---|
2688 | |
---|
2689 | new_abstract_tuple: /* CFA */ |
---|
2690 | '[' push new_abstract_parameter_list pop ']' |
---|
2691 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
2692 | ; |
---|
2693 | |
---|
2694 | new_abstract_function: /* CFA */ |
---|
2695 | '[' push pop ']' '(' new_parameter_type_list_opt ')' |
---|
2696 | { $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $6, 0 ); } |
---|
2697 | | new_abstract_tuple '(' push new_parameter_type_list_opt pop ')' |
---|
2698 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
2699 | | new_function_return '(' push new_parameter_type_list_opt pop ')' |
---|
2700 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
2701 | ; |
---|
2702 | |
---|
2703 | /* 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration |
---|
2704 | specifiers in each declaration, and in the specifier-qualifier list in each structure declaration and |
---|
2705 | type name." |
---|
2706 | |
---|
2707 | 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the |
---|
2708 | beginning of the declaration specifiers in a declaration is an obsolescent feature." |
---|
2709 | |
---|
2710 | 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
---|
2711 | prototype-format parameter type declarators) is an obsolescent feature." |
---|
2712 | |
---|
2713 | 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter |
---|
2714 | identifier and declaration lists (not prototype-format parameter type and identifier declarators) is |
---|
2715 | an obsolescent feature." */ |
---|
2716 | |
---|
2717 | /************************* MISCELLANEOUS ********************************/ |
---|
2718 | |
---|
2719 | comma_opt: /* redundant comma */ |
---|
2720 | /* empty */ |
---|
2721 | | ',' |
---|
2722 | ; |
---|
2723 | |
---|
2724 | assignment_opt: |
---|
2725 | /* empty */ |
---|
2726 | { $$ = 0; } |
---|
2727 | | '=' assignment_expression |
---|
2728 | { $$ = $2; } |
---|
2729 | ; |
---|
2730 | |
---|
2731 | %% |
---|
2732 | /* ----end of grammar----*/ |
---|
2733 | |
---|
2734 | void yyerror(char *string) { |
---|
2735 | using std::cout; |
---|
2736 | using std::endl; |
---|
2737 | if( yyfilename ) { |
---|
2738 | cout << yyfilename << ":" << endl; |
---|
2739 | } |
---|
2740 | cout << yylineno << ": syntax error reading token " << *(yylval.tok.str) << endl; |
---|
2741 | } |
---|
2742 | |
---|
2743 | /* Local Variables: */ |
---|
2744 | /* fill-column: 110 */ |
---|
2745 | /* compile-command: "make install" */ |
---|
2746 | /* End: */ |
---|