[b87a5ed] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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[974906e2] | 7 | // cfa.y -- |
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| 8 | // |
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[c11e31c] | 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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[413ad05] | 12 | // Last Modified On : Fri Aug 26 16:45:44 2016 |
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| 13 | // Update Count : 1964 |
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[974906e2] | 14 | // |
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[c11e31c] | 15 | |
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[de62360d] | 16 | // This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C |
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| 17 | // grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts have been |
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| 18 | // copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar. |
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| 19 | // In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax |
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| 20 | // that must be subsequently rejected by semantic checks. Nevertheless, there are still several semantic checks |
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| 21 | // required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions. |
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[c11e31c] | 22 | |
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[de62360d] | 23 | // Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with |
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| 24 | // the grammar. |
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[c11e31c] | 25 | |
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| 26 | // The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for: |
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| 27 | // |
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| 28 | // 1. designation with '=' (use ':' instead) |
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| 29 | // |
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[de62360d] | 30 | // Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar also has |
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| 31 | // two levels of extensions. The first extensions cover most of the GCC C extensions, except for: |
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[c11e31c] | 32 | // |
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[e7aed49] | 33 | // 1. designation with and without '=' (use ':' instead) |
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| 34 | // 2. attributes not allowed in parenthesis of declarator |
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[c11e31c] | 35 | // |
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[de62360d] | 36 | // All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall |
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| 37 | // (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the |
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| 38 | // syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable |
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| 39 | // parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation" |
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| 40 | // grammar rule. |
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[51b7345] | 41 | |
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| 42 | %{ |
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[b87a5ed] | 43 | #define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time |
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| 44 | #define YYDEBUG 1 // get the pretty debugging code to compile |
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[51b7345] | 45 | |
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| 46 | #undef __GNUC_MINOR__ |
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| 47 | |
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| 48 | #include <cstdio> |
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| 49 | #include <stack> |
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| 50 | #include "lex.h" |
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[984dce6] | 51 | #include "parser.h" |
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[51b7345] | 52 | #include "ParseNode.h" |
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[984dce6] | 53 | #include "TypedefTable.h" |
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[1db21619] | 54 | #include "TypeData.h" |
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[51b7345] | 55 | #include "LinkageSpec.h" |
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| 56 | |
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[cbaee0d] | 57 | extern DeclarationNode * parseTree; |
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[8b7ee09] | 58 | extern LinkageSpec::Spec linkage; |
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[0da3e2c] | 59 | extern TypedefTable typedefTable; |
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| 60 | |
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[8b7ee09] | 61 | std::stack< LinkageSpec::Spec > linkageStack; |
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[7bf7fb9] | 62 | |
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[ab57786] | 63 | void appendStr( std::string *to, std::string *from ) { |
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[7bf7fb9] | 64 | // "abc" "def" "ghi" => "abcdefghi", remove new text from quotes and insert before last quote in old string. |
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[ab57786] | 65 | to->insert( to->length() - 1, from->substr( 1, from->length() - 2 ) ); |
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[7bf7fb9] | 66 | } // appendStr |
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[51b7345] | 67 | %} |
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| 68 | |
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[c11e31c] | 69 | //************************* TERMINAL TOKENS ******************************** |
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[51b7345] | 70 | |
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[c11e31c] | 71 | // keywords |
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[51b7345] | 72 | %token TYPEDEF |
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| 73 | %token AUTO EXTERN REGISTER STATIC |
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[b87a5ed] | 74 | %token INLINE // C99 |
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| 75 | %token FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1) |
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[51b7345] | 76 | %token CONST VOLATILE |
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[b87a5ed] | 77 | %token RESTRICT // C99 |
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| 78 | %token FORALL LVALUE // CFA |
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[51b7345] | 79 | %token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED |
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[90c3b1c] | 80 | %token VALIST // GCC |
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[b87a5ed] | 81 | %token BOOL COMPLEX IMAGINARY // C99 |
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| 82 | %token TYPEOF LABEL // GCC |
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[51b7345] | 83 | %token ENUM STRUCT UNION |
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[e7aed49] | 84 | %token OTYPE FTYPE DTYPE TRAIT // CFA |
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[5721a6d] | 85 | %token SIZEOF OFFSETOF |
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[b87a5ed] | 86 | %token ATTRIBUTE EXTENSION // GCC |
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[51b7345] | 87 | %token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN |
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[02e5ab6] | 88 | %token CHOOSE DISABLE ENABLE FALLTHRU TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT // CFA |
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[b87a5ed] | 89 | %token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1) |
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[c11e31c] | 90 | %token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL // C11 |
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[51b7345] | 91 | |
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[c11e31c] | 92 | // names and constants: lexer differentiates between identifier and typedef names |
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[b87a5ed] | 93 | %token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname |
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| 94 | %token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname |
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| 95 | %token<tok> INTEGERconstant FLOATINGconstant CHARACTERconstant STRINGliteral |
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| 96 | %token<tok> ZERO ONE // CFA |
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[51b7345] | 97 | |
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[c11e31c] | 98 | // multi-character operators |
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[b87a5ed] | 99 | %token ARROW // -> |
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| 100 | %token ICR DECR // ++ -- |
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| 101 | %token LS RS // << >> |
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| 102 | %token LE GE EQ NE // <= >= == != |
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| 103 | %token ANDAND OROR // && || |
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| 104 | %token ELLIPSIS // ... |
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| 105 | |
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| 106 | %token MULTassign DIVassign MODassign // *= /= %=/ |
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| 107 | %token PLUSassign MINUSassign // += -= |
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| 108 | %token LSassign RSassign // <<= >>= |
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| 109 | %token ANDassign ERassign ORassign // &= ^= |= |
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[51b7345] | 110 | |
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[e7aed49] | 111 | %token ATassign // @= |
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[097e2b0] | 112 | |
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[c11e31c] | 113 | // Types declaration |
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[51b7345] | 114 | %union |
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| 115 | { |
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[b87a5ed] | 116 | Token tok; |
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| 117 | ParseNode *pn; |
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| 118 | ExpressionNode *en; |
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| 119 | DeclarationNode *decl; |
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[68cd1ce] | 120 | DeclarationNode::Aggregate aggKey; |
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[b87a5ed] | 121 | DeclarationNode::TypeClass tclass; |
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| 122 | StatementNode *sn; |
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[d1625f8] | 123 | ConstantExpr *constant; |
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[2f22cc4] | 124 | ForCtl *fctl; |
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[7f5566b] | 125 | LabelNode *label; |
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[b87a5ed] | 126 | InitializerNode *in; |
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[d9e2280] | 127 | OperKinds op; |
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[ab57786] | 128 | std::string *str; |
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[7f5566b] | 129 | bool flag; |
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[51b7345] | 130 | } |
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| 131 | |
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[097e2b0] | 132 | %type<tok> identifier no_01_identifier no_attr_identifier zero_one |
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[2871210] | 133 | %type<tok> identifier_or_type_name no_attr_identifier_or_type_name no_01_identifier_or_type_name |
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[ab57786] | 134 | %type<constant> string_literal |
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| 135 | %type<str> string_literal_list |
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[51b7345] | 136 | |
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[c11e31c] | 137 | // expressions |
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[d1625f8] | 138 | %type<en> constant |
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[b87a5ed] | 139 | %type<en> tuple tuple_expression_list |
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[9706554] | 140 | %type<op> ptrref_operator unary_operator assignment_operator |
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[b87a5ed] | 141 | %type<en> primary_expression postfix_expression unary_expression |
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| 142 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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| 143 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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| 144 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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| 145 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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| 146 | %type<en> comma_expression comma_expression_opt |
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[2f22cc4] | 147 | %type<en> argument_expression_list argument_expression assignment_opt |
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| 148 | %type<fctl> for_control_expression |
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[51b7345] | 149 | %type<en> subrange |
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[7f5566b] | 150 | %type<en> asm_operands_opt asm_operands_list asm_operand |
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| 151 | %type<label> label_list |
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[d1625f8] | 152 | %type<en> asm_clobbers_list_opt |
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[7f5566b] | 153 | %type<flag> asm_volatile_opt |
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[51b7345] | 154 | |
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[c11e31c] | 155 | // statements |
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[b87a5ed] | 156 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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[097e2b0] | 157 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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[b87a5ed] | 158 | %type<sn> fall_through_opt fall_through |
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| 159 | %type<sn> statement statement_list |
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| 160 | %type<sn> block_item_list block_item |
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[51b7345] | 161 | %type<sn> case_clause |
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[8688ce1] | 162 | %type<en> case_value |
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| 163 | %type<sn> case_value_list case_label case_label_list |
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[b87a5ed] | 164 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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[1d4580a] | 165 | %type<sn> handler_list handler_clause finally_clause |
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[51b7345] | 166 | |
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[c11e31c] | 167 | // declarations |
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[51b7345] | 168 | %type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array |
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| 169 | %type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function |
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| 170 | %type<decl> abstract_parameter_ptr abstract_ptr |
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| 171 | |
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| 172 | %type<aggKey> aggregate_key |
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| 173 | %type<decl> aggregate_name |
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| 174 | |
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| 175 | %type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension |
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| 176 | |
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| 177 | %type<decl> assertion assertion_list_opt |
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| 178 | |
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| 179 | %type<en> bit_subrange_size_opt bit_subrange_size |
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| 180 | |
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| 181 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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| 182 | |
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[4040425] | 183 | %type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier |
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[51b7345] | 184 | |
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| 185 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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| 186 | %type<decl> declaration_specifier declarator declaring_list |
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| 187 | |
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| 188 | %type<decl> elaborated_type_name |
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| 189 | |
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| 190 | %type<decl> enumerator_list enum_name |
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| 191 | %type<en> enumerator_value_opt |
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| 192 | |
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| 193 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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| 194 | |
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| 195 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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| 196 | %type<en> field field_list |
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| 197 | |
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[4d51835] | 198 | %type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr |
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[51b7345] | 199 | |
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| 200 | %type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function |
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| 201 | %type<decl> identifier_parameter_ptr identifier_list |
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| 202 | |
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| 203 | %type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple |
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| 204 | %type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list |
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| 205 | %type<decl> new_abstract_ptr new_abstract_tuple |
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| 206 | |
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| 207 | %type<decl> new_array_parameter_1st_dimension |
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| 208 | |
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[4040425] | 209 | %type<decl> new_trait_declaring_list new_declaration new_field_declaring_list |
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[51b7345] | 210 | %type<decl> new_function_declaration new_function_return new_function_specifier |
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| 211 | |
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| 212 | %type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple |
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| 213 | %type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr |
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| 214 | |
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| 215 | %type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt |
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| 216 | |
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| 217 | %type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier |
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| 218 | |
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| 219 | %type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array |
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| 220 | %type<decl> old_function_declarator old_function_no_ptr old_function_ptr |
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| 221 | |
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| 222 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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| 223 | %type<decl> parameter_type_list_opt |
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| 224 | |
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[2871210] | 225 | %type<decl> paren_identifier paren_type |
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[51b7345] | 226 | |
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[0da3e2c] | 227 | %type<decl> storage_class storage_class_list |
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[51b7345] | 228 | |
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| 229 | %type<decl> sue_declaration_specifier sue_type_specifier |
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| 230 | |
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| 231 | %type<tclass> type_class |
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| 232 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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| 233 | |
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[2871210] | 234 | %type<decl> typedef type_array typedef_declaration typedef_declaration_specifier typedef_expression |
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| 235 | %type<decl> type_function type_parameter_array type_parameter_function type_parameter_ptr |
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[c6b1105] | 236 | %type<decl> type_parameter_redeclarator type_ptr variable_type_redeclarator typedef_type_specifier |
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[2871210] | 237 | %type<decl> typegen_declaration_specifier typegen_type_specifier typegen_name |
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[51b7345] | 238 | |
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| 239 | %type<decl> type_name type_name_no_function |
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| 240 | %type<decl> type_parameter type_parameter_list |
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| 241 | |
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| 242 | %type<en> type_name_list |
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| 243 | |
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| 244 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier |
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| 245 | |
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| 246 | %type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function |
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| 247 | %type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr |
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| 248 | |
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[1db21619] | 249 | %type<decl> attribute_list_opt attribute_list attribute |
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| 250 | |
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[c11e31c] | 251 | // initializers |
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[51b7345] | 252 | %type<in> initializer initializer_list initializer_opt |
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| 253 | |
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[c11e31c] | 254 | // designators |
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[51b7345] | 255 | %type<en> designator designator_list designation |
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| 256 | |
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| 257 | |
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[b87a5ed] | 258 | // Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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| 259 | // is ambiguous: |
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| 260 | // .---------. matches IF '(' comma_expression ')' statement |
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[c11e31c] | 261 | // if ( C ) S1 else S2 |
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[b87a5ed] | 262 | // `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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[51b7345] | 263 | |
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[c11e31c] | 264 | %nonassoc THEN // rule precedence for IF '(' comma_expression ')' statement |
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| 265 | %nonassoc ELSE // token precedence for start of else clause in IF statement |
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[51b7345] | 266 | |
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[b87a5ed] | 267 | %start translation_unit // parse-tree root |
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[51b7345] | 268 | |
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| 269 | %% |
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[c11e31c] | 270 | //************************* Namespace Management ******************************** |
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| 271 | |
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[de62360d] | 272 | // The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols |
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| 273 | // "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free |
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| 274 | // grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this |
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| 275 | // grammar uses the ANSI style. |
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[c11e31c] | 276 | // |
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[de62360d] | 277 | // Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those |
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| 278 | // introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. This latter |
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| 279 | // type name creates a third class of identifiers that must be distinguished by the scanner. |
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[c11e31c] | 280 | // |
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[de62360d] | 281 | // Since the scanner cannot distinguish among the different classes of identifiers without some context information, it |
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| 282 | // accesses a data structure (the TypedefTable) to allow classification of an identifier that it has just read. |
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| 283 | // Semantic actions during the parser update this data structure when the class of identifiers change. |
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[c11e31c] | 284 | // |
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[de62360d] | 285 | // Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a |
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| 286 | // local scope; it must revert to its original class at the end of the block. Since type names can be local to a |
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| 287 | // particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are |
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| 288 | // local to the current declaration scope and those that persist past the end of the declaration (i.e., names defined in |
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| 289 | // "typedef" or "type" declarations). |
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[c11e31c] | 290 | // |
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[de62360d] | 291 | // The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and closing of |
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| 292 | // scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur |
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| 293 | // within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point |
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| 294 | // of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have |
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| 295 | // enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra |
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| 296 | // rules is to open a new scope unconditionally. As the grammar evolves, it may be neccesary to add or move around |
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| 297 | // "push" and "pop" nonterminals to resolve conflicts of this sort. |
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[51b7345] | 298 | |
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| 299 | push: |
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[ab57786] | 300 | { typedefTable.enterScope(); } |
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[4d51835] | 301 | ; |
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[51b7345] | 302 | |
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| 303 | pop: |
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[ab57786] | 304 | { typedefTable.leaveScope(); } |
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[4d51835] | 305 | ; |
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[51b7345] | 306 | |
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[c11e31c] | 307 | //************************* CONSTANTS ******************************** |
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[51b7345] | 308 | |
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| 309 | constant: |
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[de62360d] | 310 | // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant". |
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[ab57786] | 311 | INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); } |
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| 312 | | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); } |
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| 313 | | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); } |
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[4d51835] | 314 | ; |
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[51b7345] | 315 | |
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| 316 | identifier: |
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[4d51835] | 317 | IDENTIFIER |
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| 318 | | ATTR_IDENTIFIER // CFA |
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| 319 | | zero_one // CFA |
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| 320 | ; |
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[51b7345] | 321 | |
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| 322 | no_01_identifier: |
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[4d51835] | 323 | IDENTIFIER |
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| 324 | | ATTR_IDENTIFIER // CFA |
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| 325 | ; |
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[51b7345] | 326 | |
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| 327 | no_attr_identifier: |
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[4d51835] | 328 | IDENTIFIER |
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[bd85400] | 329 | | zero_one // CFA |
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[4d51835] | 330 | ; |
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[51b7345] | 331 | |
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[b87a5ed] | 332 | zero_one: // CFA |
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[4d51835] | 333 | ZERO |
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| 334 | | ONE |
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| 335 | ; |
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[51b7345] | 336 | |
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[ab57786] | 337 | string_literal: |
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| 338 | string_literal_list { $$ = build_constantStr( *$1 ); } |
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| 339 | ; |
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| 340 | |
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[b87a5ed] | 341 | string_literal_list: // juxtaposed strings are concatenated |
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[ab57786] | 342 | STRINGliteral { $$ = $1; } // conversion from tok to str |
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[7bf7fb9] | 343 | | string_literal_list STRINGliteral |
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| 344 | { |
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[ab57786] | 345 | appendStr( $1, $2 ); // append 2nd juxtaposed string to 1st |
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[7bf7fb9] | 346 | delete $2; // allocated by lexer |
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[ab57786] | 347 | $$ = $1; // conversion from tok to str |
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[7bf7fb9] | 348 | } |
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[4d51835] | 349 | ; |
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[51b7345] | 350 | |
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[c11e31c] | 351 | //************************* EXPRESSIONS ******************************** |
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[51b7345] | 352 | |
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| 353 | primary_expression: |
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[4d51835] | 354 | IDENTIFIER // typedef name cannot be used as a variable name |
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[d1625f8] | 355 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
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[4d51835] | 356 | | zero_one |
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[d1625f8] | 357 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
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[4d51835] | 358 | | '(' comma_expression ')' |
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| 359 | { $$ = $2; } |
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| 360 | | '(' compound_statement ')' // GCC, lambda expression |
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[d1625f8] | 361 | { $$ = new ExpressionNode( build_valexpr( $2 ) ); } |
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[4d51835] | 362 | ; |
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[51b7345] | 363 | |
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| 364 | postfix_expression: |
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[4d51835] | 365 | primary_expression |
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| 366 | | postfix_expression '[' push assignment_expression pop ']' |
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[c6b1105] | 367 | // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a |
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[de62360d] | 368 | // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be |
---|
| 369 | // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is |
---|
| 370 | // equivalent to the old x[i,j]. |
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[d1625f8] | 371 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $4 ) ); } |
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[4d51835] | 372 | | postfix_expression '(' argument_expression_list ')' |
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[d1625f8] | 373 | { $$ = new ExpressionNode( build_func( $1, $3 ) ); } |
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[ab57786] | 374 | // ambiguity with .0 so space required after field-selection, e.g. |
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[bd85400] | 375 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
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[4d51835] | 376 | | postfix_expression '.' no_attr_identifier |
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[d1625f8] | 377 | { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); } |
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[4d51835] | 378 | | postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector |
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| 379 | | postfix_expression ARROW no_attr_identifier |
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[d1625f8] | 380 | { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); } |
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[4d51835] | 381 | | postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector |
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| 382 | | postfix_expression ICR |
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[d1625f8] | 383 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); } |
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[4d51835] | 384 | | postfix_expression DECR |
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[d1625f8] | 385 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); } |
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[4d51835] | 386 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99 |
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[d1625f8] | 387 | { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); } |
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[097e2b0] | 388 | | postfix_expression '{' argument_expression_list '}' // CFA |
---|
| 389 | { |
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[9706554] | 390 | Token fn; |
---|
| 391 | fn.str = new std::string( "?{}" ); // location undefined |
---|
[1d4580a] | 392 | $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ); |
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[097e2b0] | 393 | } |
---|
[4d51835] | 394 | ; |
---|
[51b7345] | 395 | |
---|
| 396 | argument_expression_list: |
---|
[4d51835] | 397 | argument_expression |
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| 398 | | argument_expression_list ',' argument_expression |
---|
[1d4580a] | 399 | { $$ = (ExpressionNode *)( $1->set_last( $3 )); } |
---|
[4d51835] | 400 | ; |
---|
[51b7345] | 401 | |
---|
| 402 | argument_expression: |
---|
[4d51835] | 403 | // empty |
---|
| 404 | { $$ = 0; } // use default argument |
---|
| 405 | | assignment_expression |
---|
| 406 | ; |
---|
[b87a5ed] | 407 | |
---|
| 408 | field_list: // CFA, tuple field selector |
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[4d51835] | 409 | field |
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[1d4580a] | 410 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 411 | ; |
---|
[b87a5ed] | 412 | |
---|
| 413 | field: // CFA, tuple field selector |
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[4d51835] | 414 | no_attr_identifier |
---|
[d1625f8] | 415 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
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[ab57786] | 416 | // ambiguity with .0 so space required after field-selection, e.g. |
---|
[bd85400] | 417 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
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[4d51835] | 418 | | no_attr_identifier '.' field |
---|
[d1625f8] | 419 | { $$ = new ExpressionNode( build_fieldSel( $3, build_varref( $1 ) ) ); } |
---|
[4d51835] | 420 | | no_attr_identifier '.' '[' push field_list pop ']' |
---|
[d1625f8] | 421 | { $$ = new ExpressionNode( build_fieldSel( $5, build_varref( $1 ) ) ); } |
---|
[4d51835] | 422 | | no_attr_identifier ARROW field |
---|
[d1625f8] | 423 | { $$ = new ExpressionNode( build_pfieldSel( $3, build_varref( $1 ) ) ); } |
---|
[4d51835] | 424 | | no_attr_identifier ARROW '[' push field_list pop ']' |
---|
[d1625f8] | 425 | { $$ = new ExpressionNode( build_pfieldSel( $5, build_varref( $1 ) ) ); } |
---|
[4d51835] | 426 | ; |
---|
[51b7345] | 427 | |
---|
| 428 | unary_expression: |
---|
[4d51835] | 429 | postfix_expression |
---|
[c6b1105] | 430 | // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires |
---|
| 431 | // semantics checks, e.g., ++3, 3--, *3, &&3 |
---|
[51b1202] | 432 | | constant |
---|
| 433 | { $$ = $1; } |
---|
[ab57786] | 434 | | string_literal |
---|
[d1625f8] | 435 | { $$ = new ExpressionNode( $1 ); } |
---|
[4d51835] | 436 | | EXTENSION cast_expression // GCC |
---|
[e04ef3a] | 437 | { $$ = $2->set_extension( true ); } |
---|
[c6b1105] | 438 | // '*' ('&') is separated from unary_operator because of shift/reduce conflict in: |
---|
| 439 | // { * X; } // dereference X |
---|
| 440 | // { * int X; } // CFA declaration of pointer to int |
---|
[51e076e] | 441 | | ptrref_operator cast_expression // CFA |
---|
[9706554] | 442 | { |
---|
| 443 | switch ( $1 ) { |
---|
[d9e2280] | 444 | case OperKinds::AddressOf: |
---|
[d1625f8] | 445 | $$ = new ExpressionNode( build_addressOf( $2 ) ); |
---|
[9706554] | 446 | break; |
---|
[d9e2280] | 447 | case OperKinds::PointTo: |
---|
[d1625f8] | 448 | $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); |
---|
[9706554] | 449 | break; |
---|
| 450 | default: |
---|
| 451 | assert( false ); |
---|
| 452 | } |
---|
| 453 | } |
---|
[4d51835] | 454 | | unary_operator cast_expression |
---|
[d1625f8] | 455 | { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); } |
---|
[dd51906] | 456 | | ICR unary_expression |
---|
[d1625f8] | 457 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); } |
---|
[dd51906] | 458 | | DECR unary_expression |
---|
[d1625f8] | 459 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); } |
---|
[4d51835] | 460 | | SIZEOF unary_expression |
---|
[d1625f8] | 461 | { $$ = new ExpressionNode( build_sizeOfexpr( $2 ) ); } |
---|
[4d51835] | 462 | | SIZEOF '(' type_name_no_function ')' |
---|
[d1625f8] | 463 | { $$ = new ExpressionNode( build_sizeOftype( $3 ) ); } |
---|
| 464 | | ALIGNOF unary_expression // GCC, variable alignment |
---|
| 465 | { $$ = new ExpressionNode( build_alignOfexpr( $2 ) ); } |
---|
| 466 | | ALIGNOF '(' type_name_no_function ')' // GCC, type alignment |
---|
| 467 | { $$ = new ExpressionNode( build_alignOftype( $3 ) ); } |
---|
[5721a6d] | 468 | | OFFSETOF '(' type_name_no_function ',' no_attr_identifier ')' |
---|
[d1625f8] | 469 | { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); } |
---|
[4d51835] | 470 | | ATTR_IDENTIFIER |
---|
[d1625f8] | 471 | { $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), nullptr ) ); } |
---|
[4d51835] | 472 | | ATTR_IDENTIFIER '(' argument_expression ')' |
---|
[d1625f8] | 473 | { $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), $3 ) ); } |
---|
| 474 | | ATTR_IDENTIFIER '(' type_name ')' |
---|
| 475 | { $$ = new ExpressionNode( build_attrtype( build_varref( $1 ), $3 ) ); } |
---|
[c6b1105] | 476 | // | ANDAND IDENTIFIER // GCC, address of label |
---|
[d1625f8] | 477 | // { $$ = new ExpressionNode( new OperatorNode( OperKinds::LabelAddress ), new ExpressionNode( build_varref( $2, true ) ); } |
---|
[4d51835] | 478 | ; |
---|
[51b7345] | 479 | |
---|
[dd51906] | 480 | ptrref_operator: |
---|
[d9e2280] | 481 | '*' { $$ = OperKinds::PointTo; } |
---|
| 482 | | '&' { $$ = OperKinds::AddressOf; } |
---|
[c6b1105] | 483 | // GCC, address of label must be handled by semantic check for ref,ref,label |
---|
[d9e2280] | 484 | // | ANDAND { $$ = OperKinds::And; } |
---|
[dd51906] | 485 | ; |
---|
| 486 | |
---|
[51b7345] | 487 | unary_operator: |
---|
[d9e2280] | 488 | '+' { $$ = OperKinds::UnPlus; } |
---|
| 489 | | '-' { $$ = OperKinds::UnMinus; } |
---|
| 490 | | '!' { $$ = OperKinds::Neg; } |
---|
| 491 | | '~' { $$ = OperKinds::BitNeg; } |
---|
[4d51835] | 492 | ; |
---|
[51b7345] | 493 | |
---|
| 494 | cast_expression: |
---|
[4d51835] | 495 | unary_expression |
---|
| 496 | | '(' type_name_no_function ')' cast_expression |
---|
[d1625f8] | 497 | { $$ = new ExpressionNode( build_cast( $2, $4 ) ); } |
---|
[4d51835] | 498 | | '(' type_name_no_function ')' tuple |
---|
[d1625f8] | 499 | { $$ = new ExpressionNode( build_cast( $2, $4 ) ); } |
---|
[4d51835] | 500 | ; |
---|
[51b7345] | 501 | |
---|
| 502 | multiplicative_expression: |
---|
[4d51835] | 503 | cast_expression |
---|
| 504 | | multiplicative_expression '*' cast_expression |
---|
[d1625f8] | 505 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); } |
---|
[4d51835] | 506 | | multiplicative_expression '/' cast_expression |
---|
[d1625f8] | 507 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); } |
---|
[4d51835] | 508 | | multiplicative_expression '%' cast_expression |
---|
[d1625f8] | 509 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); } |
---|
[4d51835] | 510 | ; |
---|
[51b7345] | 511 | |
---|
| 512 | additive_expression: |
---|
[4d51835] | 513 | multiplicative_expression |
---|
| 514 | | additive_expression '+' multiplicative_expression |
---|
[d1625f8] | 515 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); } |
---|
[4d51835] | 516 | | additive_expression '-' multiplicative_expression |
---|
[d1625f8] | 517 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); } |
---|
[4d51835] | 518 | ; |
---|
[51b7345] | 519 | |
---|
| 520 | shift_expression: |
---|
[4d51835] | 521 | additive_expression |
---|
| 522 | | shift_expression LS additive_expression |
---|
[d1625f8] | 523 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); } |
---|
[4d51835] | 524 | | shift_expression RS additive_expression |
---|
[d1625f8] | 525 | { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); } |
---|
[4d51835] | 526 | ; |
---|
[51b7345] | 527 | |
---|
| 528 | relational_expression: |
---|
[4d51835] | 529 | shift_expression |
---|
| 530 | | relational_expression '<' shift_expression |
---|
[d1625f8] | 531 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); } |
---|
[4d51835] | 532 | | relational_expression '>' shift_expression |
---|
[d1625f8] | 533 | { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); } |
---|
[4d51835] | 534 | | relational_expression LE shift_expression |
---|
[d1625f8] | 535 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); } |
---|
[4d51835] | 536 | | relational_expression GE shift_expression |
---|
[d1625f8] | 537 | { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); } |
---|
[4d51835] | 538 | ; |
---|
[51b7345] | 539 | |
---|
| 540 | equality_expression: |
---|
[4d51835] | 541 | relational_expression |
---|
| 542 | | equality_expression EQ relational_expression |
---|
[d1625f8] | 543 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); } |
---|
[4d51835] | 544 | | equality_expression NE relational_expression |
---|
[d1625f8] | 545 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); } |
---|
[4d51835] | 546 | ; |
---|
[51b7345] | 547 | |
---|
| 548 | AND_expression: |
---|
[4d51835] | 549 | equality_expression |
---|
| 550 | | AND_expression '&' equality_expression |
---|
[d1625f8] | 551 | { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); } |
---|
[4d51835] | 552 | ; |
---|
[51b7345] | 553 | |
---|
| 554 | exclusive_OR_expression: |
---|
[4d51835] | 555 | AND_expression |
---|
| 556 | | exclusive_OR_expression '^' AND_expression |
---|
[d1625f8] | 557 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); } |
---|
[4d51835] | 558 | ; |
---|
[51b7345] | 559 | |
---|
| 560 | inclusive_OR_expression: |
---|
[4d51835] | 561 | exclusive_OR_expression |
---|
| 562 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
[d1625f8] | 563 | { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); } |
---|
[4d51835] | 564 | ; |
---|
[51b7345] | 565 | |
---|
| 566 | logical_AND_expression: |
---|
[4d51835] | 567 | inclusive_OR_expression |
---|
| 568 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
[d1625f8] | 569 | { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); } |
---|
[4d51835] | 570 | ; |
---|
[51b7345] | 571 | |
---|
| 572 | logical_OR_expression: |
---|
[4d51835] | 573 | logical_AND_expression |
---|
| 574 | | logical_OR_expression OROR logical_AND_expression |
---|
[d1625f8] | 575 | { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); } |
---|
[4d51835] | 576 | ; |
---|
[51b7345] | 577 | |
---|
| 578 | conditional_expression: |
---|
[4d51835] | 579 | logical_OR_expression |
---|
| 580 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
[d1625f8] | 581 | { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); } |
---|
[d9e2280] | 582 | // FIX ME: this hack computes $1 twice |
---|
[4d51835] | 583 | | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand |
---|
[d1625f8] | 584 | { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); } |
---|
[4d51835] | 585 | | logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression |
---|
[d1625f8] | 586 | { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); } |
---|
[4d51835] | 587 | ; |
---|
[51b7345] | 588 | |
---|
| 589 | constant_expression: |
---|
[4d51835] | 590 | conditional_expression |
---|
| 591 | ; |
---|
[51b7345] | 592 | |
---|
| 593 | assignment_expression: |
---|
[4d51835] | 594 | // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples |
---|
| 595 | conditional_expression |
---|
| 596 | | unary_expression assignment_operator assignment_expression |
---|
[d1625f8] | 597 | { $$ = new ExpressionNode( build_binary_ptr( $2, $1, $3 ) ); } |
---|
[4d51835] | 598 | | tuple assignment_opt // CFA, tuple expression |
---|
[d1625f8] | 599 | { $$ = ( $2 == 0 ) ? $1 : new ExpressionNode( build_binary_ptr( OperKinds::Assign, $1, $2 ) ); } |
---|
[4d51835] | 600 | ; |
---|
[51b7345] | 601 | |
---|
| 602 | assignment_expression_opt: |
---|
[4d51835] | 603 | // empty |
---|
[d1625f8] | 604 | { $$ = nullptr; } |
---|
[4d51835] | 605 | | assignment_expression |
---|
| 606 | ; |
---|
[b87a5ed] | 607 | |
---|
[9706554] | 608 | assignment_operator: |
---|
[d9e2280] | 609 | '=' { $$ = OperKinds::Assign; } |
---|
[a839867] | 610 | | ATassign { $$ = OperKinds::AtAssn; } |
---|
[d9e2280] | 611 | | MULTassign { $$ = OperKinds::MulAssn; } |
---|
| 612 | | DIVassign { $$ = OperKinds::DivAssn; } |
---|
| 613 | | MODassign { $$ = OperKinds::ModAssn; } |
---|
| 614 | | PLUSassign { $$ = OperKinds::PlusAssn; } |
---|
| 615 | | MINUSassign { $$ = OperKinds::MinusAssn; } |
---|
| 616 | | LSassign { $$ = OperKinds::LSAssn; } |
---|
| 617 | | RSassign { $$ = OperKinds::RSAssn; } |
---|
| 618 | | ANDassign { $$ = OperKinds::AndAssn; } |
---|
| 619 | | ERassign { $$ = OperKinds::ERAssn; } |
---|
| 620 | | ORassign { $$ = OperKinds::OrAssn; } |
---|
[413ad05] | 621 | ; |
---|
[9706554] | 622 | |
---|
[b87a5ed] | 623 | tuple: // CFA, tuple |
---|
[de62360d] | 624 | // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with |
---|
| 625 | // comma_expression in new_identifier_parameter_array and new_abstract_array |
---|
[2871210] | 626 | '[' ']' |
---|
[d1625f8] | 627 | { $$ = new ExpressionNode( build_tuple() ); } |
---|
[4d51835] | 628 | | '[' push assignment_expression pop ']' |
---|
[d1625f8] | 629 | { $$ = new ExpressionNode( build_tuple( $3 ) ); } |
---|
[4d51835] | 630 | | '[' push ',' tuple_expression_list pop ']' |
---|
[1d4580a] | 631 | { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $4 ) ) ); } |
---|
[4d51835] | 632 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
---|
[1d4580a] | 633 | { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)$3->set_last( $5 ) ) ); } |
---|
[4d51835] | 634 | ; |
---|
[51b7345] | 635 | |
---|
| 636 | tuple_expression_list: |
---|
[4d51835] | 637 | assignment_expression_opt |
---|
| 638 | | tuple_expression_list ',' assignment_expression_opt |
---|
[1d4580a] | 639 | { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 640 | ; |
---|
[51b7345] | 641 | |
---|
| 642 | comma_expression: |
---|
[4d51835] | 643 | assignment_expression |
---|
[9706554] | 644 | | comma_expression ',' assignment_expression |
---|
[d1625f8] | 645 | { $$ = new ExpressionNode( build_comma( $1, $3 ) ); } |
---|
[4d51835] | 646 | ; |
---|
[51b7345] | 647 | |
---|
| 648 | comma_expression_opt: |
---|
[4d51835] | 649 | // empty |
---|
| 650 | { $$ = 0; } |
---|
| 651 | | comma_expression |
---|
| 652 | ; |
---|
[51b7345] | 653 | |
---|
[c11e31c] | 654 | //*************************** STATEMENTS ******************************* |
---|
[51b7345] | 655 | |
---|
| 656 | statement: |
---|
[4d51835] | 657 | labeled_statement |
---|
| 658 | | compound_statement |
---|
| 659 | | expression_statement { $$ = $1; } |
---|
| 660 | | selection_statement |
---|
| 661 | | iteration_statement |
---|
| 662 | | jump_statement |
---|
| 663 | | exception_statement |
---|
| 664 | | asm_statement |
---|
[097e2b0] | 665 | | '^' postfix_expression '{' argument_expression_list '}' ';' // CFA |
---|
| 666 | { |
---|
[d9e2280] | 667 | Token fn; |
---|
| 668 | fn.str = new std::string( "^?{}" ); // location undefined |
---|
[e82aa9df] | 669 | $$ = new StatementNode( build_expr( new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) ) ) ); |
---|
[097e2b0] | 670 | } |
---|
[4d51835] | 671 | ; |
---|
[51b7345] | 672 | |
---|
| 673 | labeled_statement: |
---|
[c6b1105] | 674 | // labels cannot be identifiers 0 or 1 |
---|
| 675 | IDENTIFIER ':' attribute_list_opt statement |
---|
[1db21619] | 676 | { |
---|
| 677 | $$ = $4->add_label( $1 ); |
---|
| 678 | } |
---|
[4d51835] | 679 | ; |
---|
[51b7345] | 680 | |
---|
| 681 | compound_statement: |
---|
[4d51835] | 682 | '{' '}' |
---|
[e82aa9df] | 683 | { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); } |
---|
[4d51835] | 684 | | '{' |
---|
[de62360d] | 685 | // Two scopes are necessary because the block itself has a scope, but every declaration within the block also |
---|
| 686 | // requires its own scope |
---|
[4d51835] | 687 | push push |
---|
[51b1202] | 688 | local_label_declaration_opt // GCC, local labels |
---|
[4d51835] | 689 | block_item_list pop '}' // C99, intermix declarations and statements |
---|
[e82aa9df] | 690 | { $$ = new StatementNode( build_compound( $5 ) ); } |
---|
[4d51835] | 691 | ; |
---|
[b87a5ed] | 692 | |
---|
| 693 | block_item_list: // C99 |
---|
[4d51835] | 694 | block_item |
---|
| 695 | | block_item_list push block_item |
---|
[1d4580a] | 696 | { if ( $1 != 0 ) { $1->set_last( $3 ); $$ = $1; } } |
---|
[4d51835] | 697 | ; |
---|
[51b7345] | 698 | |
---|
| 699 | block_item: |
---|
[4d51835] | 700 | declaration // CFA, new & old style declarations |
---|
[e82aa9df] | 701 | { $$ = new StatementNode( $1 ); } |
---|
[4d51835] | 702 | | EXTENSION declaration // GCC |
---|
[8e9cbb2] | 703 | { // mark all fields in list |
---|
[926af74] | 704 | for ( DeclarationNode *iter = $2; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) |
---|
[8e9cbb2] | 705 | iter->set_extension( true ); |
---|
[e82aa9df] | 706 | $$ = new StatementNode( $2 ); |
---|
[8e9cbb2] | 707 | } |
---|
[4d51835] | 708 | | function_definition |
---|
[e82aa9df] | 709 | { $$ = new StatementNode( $1 ); } |
---|
[4d51835] | 710 | | statement pop |
---|
| 711 | ; |
---|
[51b7345] | 712 | |
---|
| 713 | statement_list: |
---|
[4d51835] | 714 | statement |
---|
| 715 | | statement_list statement |
---|
[1d4580a] | 716 | { if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } } |
---|
[4d51835] | 717 | ; |
---|
[51b7345] | 718 | |
---|
| 719 | expression_statement: |
---|
[4d51835] | 720 | comma_expression_opt ';' |
---|
[e82aa9df] | 721 | { $$ = new StatementNode( build_expr( $1 ) ); } |
---|
[4d51835] | 722 | ; |
---|
[51b7345] | 723 | |
---|
| 724 | selection_statement: |
---|
[4d51835] | 725 | IF '(' comma_expression ')' statement %prec THEN |
---|
| 726 | // explicitly deal with the shift/reduce conflict on if/else |
---|
[e82aa9df] | 727 | { $$ = new StatementNode( build_if( $3, $5, nullptr ) ); } |
---|
[4d51835] | 728 | | IF '(' comma_expression ')' statement ELSE statement |
---|
[e82aa9df] | 729 | { $$ = new StatementNode( build_if( $3, $5, $7 ) ); } |
---|
[4d51835] | 730 | | SWITCH '(' comma_expression ')' case_clause // CFA |
---|
[e82aa9df] | 731 | { $$ = new StatementNode( build_switch( $3, $5 ) ); } |
---|
[4d51835] | 732 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA |
---|
[4e06c1e] | 733 | { |
---|
[e82aa9df] | 734 | StatementNode *sw = new StatementNode( build_switch( $3, $8 ) ); |
---|
[4e06c1e] | 735 | // The semantics of the declaration list is changed to include associated initialization, which is performed |
---|
| 736 | // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound |
---|
| 737 | // statement around the switch. Statements after the initial declaration list can never be executed, and |
---|
[8688ce1] | 738 | // therefore, are removed from the grammar even though C allows it. The change also applies to choose |
---|
| 739 | // statement. |
---|
[e82aa9df] | 740 | $$ = $7 != 0 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw; |
---|
[4e06c1e] | 741 | } |
---|
[4d51835] | 742 | | CHOOSE '(' comma_expression ')' case_clause // CFA |
---|
[e82aa9df] | 743 | { $$ = new StatementNode( build_switch( $3, $5 ) ); } |
---|
[4d51835] | 744 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA |
---|
[4e06c1e] | 745 | { |
---|
[e82aa9df] | 746 | StatementNode *sw = new StatementNode( build_switch( $3, $8 ) ); |
---|
| 747 | $$ = $7 != 0 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw; |
---|
[4e06c1e] | 748 | } |
---|
[4d51835] | 749 | ; |
---|
[b87a5ed] | 750 | |
---|
[de62360d] | 751 | // CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case |
---|
| 752 | // clause allows a list of values and subranges. |
---|
[b87a5ed] | 753 | |
---|
| 754 | case_value: // CFA |
---|
[4d51835] | 755 | constant_expression { $$ = $1; } |
---|
| 756 | | constant_expression ELLIPSIS constant_expression // GCC, subrange |
---|
[d1625f8] | 757 | { $$ = new ExpressionNode( build_range( $1, $3 ) ); } |
---|
[4d51835] | 758 | | subrange // CFA, subrange |
---|
| 759 | ; |
---|
[b87a5ed] | 760 | |
---|
| 761 | case_value_list: // CFA |
---|
[e82aa9df] | 762 | case_value { $$ = new StatementNode( build_case( $1 ) ); } |
---|
[064e3ff] | 763 | // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5" |
---|
[e82aa9df] | 764 | | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); } |
---|
[4d51835] | 765 | ; |
---|
[b87a5ed] | 766 | |
---|
| 767 | case_label: // CFA |
---|
[8688ce1] | 768 | CASE case_value_list ':' { $$ = $2; } |
---|
[e82aa9df] | 769 | | DEFAULT ':' { $$ = new StatementNode( build_default() ); } |
---|
[4d51835] | 770 | // A semantic check is required to ensure only one default clause per switch/choose statement. |
---|
| 771 | ; |
---|
[b87a5ed] | 772 | |
---|
| 773 | case_label_list: // CFA |
---|
[4d51835] | 774 | case_label |
---|
[1d4580a] | 775 | | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); } |
---|
[4d51835] | 776 | ; |
---|
[b87a5ed] | 777 | |
---|
| 778 | case_clause: // CFA |
---|
[e82aa9df] | 779 | case_label_list statement { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); } |
---|
[4d51835] | 780 | ; |
---|
[b87a5ed] | 781 | |
---|
| 782 | switch_clause_list_opt: // CFA |
---|
[4d51835] | 783 | // empty |
---|
| 784 | { $$ = 0; } |
---|
| 785 | | switch_clause_list |
---|
| 786 | ; |
---|
[b87a5ed] | 787 | |
---|
| 788 | switch_clause_list: // CFA |
---|
[4d51835] | 789 | case_label_list statement_list |
---|
[e82aa9df] | 790 | { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); } |
---|
[4d51835] | 791 | | switch_clause_list case_label_list statement_list |
---|
[e82aa9df] | 792 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); } |
---|
[4d51835] | 793 | ; |
---|
[b87a5ed] | 794 | |
---|
| 795 | choose_clause_list_opt: // CFA |
---|
[4d51835] | 796 | // empty |
---|
| 797 | { $$ = 0; } |
---|
| 798 | | choose_clause_list |
---|
| 799 | ; |
---|
[b87a5ed] | 800 | |
---|
| 801 | choose_clause_list: // CFA |
---|
[4d51835] | 802 | case_label_list fall_through |
---|
[de62360d] | 803 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 804 | | case_label_list statement_list fall_through_opt |
---|
[e82aa9df] | 805 | { $$ = $1->append_last_case( new StatementNode( build_compound( (StatementNode *)$2->set_last( $3 ) ) ) ); } |
---|
[4d51835] | 806 | | choose_clause_list case_label_list fall_through |
---|
[1d4580a] | 807 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 808 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
[e82aa9df] | 809 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( (StatementNode *)$3->set_last( $4 ) ) ) ) ) ); } |
---|
[4d51835] | 810 | ; |
---|
[b87a5ed] | 811 | |
---|
| 812 | fall_through_opt: // CFA |
---|
[4d51835] | 813 | // empty |
---|
[ab57786] | 814 | { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } // insert implicit break |
---|
[4d51835] | 815 | | fall_through |
---|
| 816 | ; |
---|
[b87a5ed] | 817 | |
---|
| 818 | fall_through: // CFA |
---|
[4e06c1e] | 819 | FALLTHRU |
---|
| 820 | { $$ = 0; } |
---|
| 821 | | FALLTHRU ';' |
---|
| 822 | { $$ = 0; } |
---|
[4d51835] | 823 | ; |
---|
[51b7345] | 824 | |
---|
| 825 | iteration_statement: |
---|
[4d51835] | 826 | WHILE '(' comma_expression ')' statement |
---|
[e82aa9df] | 827 | { $$ = new StatementNode( build_while( $3, $5 ) ); } |
---|
[4d51835] | 828 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
[e82aa9df] | 829 | { $$ = new StatementNode( build_while( $5, $2 ) ); } |
---|
[4d51835] | 830 | | FOR '(' push for_control_expression ')' statement |
---|
[e82aa9df] | 831 | { $$ = new StatementNode( build_for( $4, $6 ) ); } |
---|
[4d51835] | 832 | ; |
---|
[51b7345] | 833 | |
---|
| 834 | for_control_expression: |
---|
[4d51835] | 835 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
[2f22cc4] | 836 | { $$ = new ForCtl( $1, $4, $6 ); } |
---|
[4d51835] | 837 | | declaration comma_expression_opt ';' comma_expression_opt // C99 |
---|
[2f22cc4] | 838 | { $$ = new ForCtl( $1, $2, $4 ); } |
---|
[d1625f8] | 839 | ; |
---|
[51b7345] | 840 | |
---|
| 841 | jump_statement: |
---|
[c6b1105] | 842 | GOTO IDENTIFIER ';' |
---|
[ab57786] | 843 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); } |
---|
[4d51835] | 844 | | GOTO '*' comma_expression ';' // GCC, computed goto |
---|
[4e06c1e] | 845 | // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3); |
---|
[de62360d] | 846 | // whereas normal operator precedence yields goto (*i)+3; |
---|
[e82aa9df] | 847 | { $$ = new StatementNode( build_computedgoto( $3 ) ); } |
---|
[4d51835] | 848 | | CONTINUE ';' |
---|
[de62360d] | 849 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[ab57786] | 850 | { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); } |
---|
[4e06c1e] | 851 | | CONTINUE IDENTIFIER ';' // CFA, multi-level continue |
---|
[de62360d] | 852 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 853 | // the target of the transfer appears only at the start of an iteration statement. |
---|
[ab57786] | 854 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); } |
---|
[4d51835] | 855 | | BREAK ';' |
---|
[de62360d] | 856 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[ab57786] | 857 | { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } |
---|
[4e06c1e] | 858 | | BREAK IDENTIFIER ';' // CFA, multi-level exit |
---|
[de62360d] | 859 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 860 | // the target of the transfer appears only at the start of an iteration statement. |
---|
[ab57786] | 861 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); } |
---|
[4d51835] | 862 | | RETURN comma_expression_opt ';' |
---|
[e82aa9df] | 863 | { $$ = new StatementNode( build_return( $2 ) ); } |
---|
[8cc5cb0] | 864 | | THROW assignment_expression_opt ';' // handles rethrow |
---|
[e82aa9df] | 865 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[8cc5cb0] | 866 | | THROWRESUME assignment_expression_opt ';' // handles reresume |
---|
[e82aa9df] | 867 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[8cc5cb0] | 868 | | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume |
---|
[e82aa9df] | 869 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[4d51835] | 870 | ; |
---|
[51b7345] | 871 | |
---|
| 872 | exception_statement: |
---|
[4d51835] | 873 | TRY compound_statement handler_list |
---|
[e82aa9df] | 874 | { $$ = new StatementNode( build_try( $2, $3, 0 ) ); } |
---|
[4d51835] | 875 | | TRY compound_statement finally_clause |
---|
[e82aa9df] | 876 | { $$ = new StatementNode( build_try( $2, 0, $3 ) ); } |
---|
[4d51835] | 877 | | TRY compound_statement handler_list finally_clause |
---|
[e82aa9df] | 878 | { $$ = new StatementNode( build_try( $2, $3, $4 ) ); } |
---|
[4d51835] | 879 | ; |
---|
[51b7345] | 880 | |
---|
| 881 | handler_list: |
---|
[4d51835] | 882 | handler_clause |
---|
[de62360d] | 883 | // ISO/IEC 9899:1999 Section 15.3(6 ) If present, a "..." handler shall be the last handler for its try block. |
---|
[4d51835] | 884 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 885 | { $$ = new StatementNode( build_catch( 0, $5, true ) ); } |
---|
[4d51835] | 886 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 887 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( 0, $6, true ) ) ); } |
---|
[02e5ab6] | 888 | | CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 889 | { $$ = new StatementNode( build_catch( 0, $5, true ) ); } |
---|
[02e5ab6] | 890 | | handler_clause CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 891 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( 0, $6, true ) ) ); } |
---|
[4d51835] | 892 | ; |
---|
[51b7345] | 893 | |
---|
| 894 | handler_clause: |
---|
[4d51835] | 895 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 896 | { $$ = new StatementNode( build_catch( $5, $8 ) ); } |
---|
[4d51835] | 897 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 898 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $6, $9 ) ) ); } |
---|
[02e5ab6] | 899 | | CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 900 | { $$ = new StatementNode( build_catch( $5, $8 ) ); } |
---|
[02e5ab6] | 901 | | handler_clause CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 902 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $6, $9 ) ) ); } |
---|
[4d51835] | 903 | ; |
---|
[51b7345] | 904 | |
---|
| 905 | finally_clause: |
---|
[4d51835] | 906 | FINALLY compound_statement |
---|
| 907 | { |
---|
[e82aa9df] | 908 | $$ = new StatementNode( build_finally( $2 ) ); |
---|
[4d51835] | 909 | } |
---|
| 910 | ; |
---|
[51b7345] | 911 | |
---|
| 912 | exception_declaration: |
---|
[4d51835] | 913 | // A semantic check is required to ensure type_specifier does not create a new type, e.g.: |
---|
| 914 | // |
---|
| 915 | // catch ( struct { int i; } x ) ... |
---|
| 916 | // |
---|
| 917 | // This new type cannot catch any thrown type because of name equivalence among types. |
---|
| 918 | type_specifier |
---|
| 919 | | type_specifier declarator |
---|
| 920 | { |
---|
| 921 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 922 | $$ = $2->addType( $1 ); |
---|
| 923 | } |
---|
| 924 | | type_specifier variable_abstract_declarator |
---|
| 925 | { $$ = $2->addType( $1 ); } |
---|
| 926 | | new_abstract_declarator_tuple no_attr_identifier // CFA |
---|
| 927 | { |
---|
| 928 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 929 | $$ = $1->addName( $2 ); |
---|
| 930 | } |
---|
| 931 | | new_abstract_declarator_tuple // CFA |
---|
| 932 | ; |
---|
[51b7345] | 933 | |
---|
| 934 | asm_statement: |
---|
[ab57786] | 935 | ASM asm_volatile_opt '(' string_literal ')' ';' |
---|
[e82aa9df] | 936 | { $$ = new StatementNode( build_asmstmt( $2, $4, 0 ) ); } |
---|
[ab57786] | 937 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC |
---|
[e82aa9df] | 938 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6 ) ); } |
---|
[ab57786] | 939 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
[e82aa9df] | 940 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8 ) ); } |
---|
[ab57786] | 941 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';' |
---|
[e82aa9df] | 942 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8, $10 ) ); } |
---|
[ab57786] | 943 | | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';' |
---|
[e82aa9df] | 944 | { $$ = new StatementNode( build_asmstmt( $2, $5, 0, $8, $10, $12 ) ); } |
---|
[7f5566b] | 945 | ; |
---|
| 946 | |
---|
| 947 | asm_volatile_opt: // GCC |
---|
| 948 | // empty |
---|
| 949 | { $$ = false; } |
---|
| 950 | | VOLATILE |
---|
| 951 | { $$ = true; } |
---|
[4d51835] | 952 | ; |
---|
[b87a5ed] | 953 | |
---|
| 954 | asm_operands_opt: // GCC |
---|
[4d51835] | 955 | // empty |
---|
[7f5566b] | 956 | { $$ = 0; } // use default argument |
---|
[4d51835] | 957 | | asm_operands_list |
---|
| 958 | ; |
---|
[b87a5ed] | 959 | |
---|
| 960 | asm_operands_list: // GCC |
---|
[4d51835] | 961 | asm_operand |
---|
| 962 | | asm_operands_list ',' asm_operand |
---|
[1d4580a] | 963 | { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 964 | ; |
---|
[b87a5ed] | 965 | |
---|
| 966 | asm_operand: // GCC |
---|
[ab57786] | 967 | string_literal '(' constant_expression ')' |
---|
[e82aa9df] | 968 | { $$ = new ExpressionNode( build_asmexpr( 0, $1, $3 ) ); } |
---|
[ab57786] | 969 | | '[' constant_expression ']' string_literal '(' constant_expression ')' |
---|
[e82aa9df] | 970 | { $$ = new ExpressionNode( build_asmexpr( $2, $4, $6 ) ); } |
---|
[7f5566b] | 971 | ; |
---|
| 972 | |
---|
[4e06c1e] | 973 | asm_clobbers_list_opt: // GCC |
---|
[7f5566b] | 974 | // empty |
---|
| 975 | { $$ = 0; } // use default argument |
---|
[ab57786] | 976 | | string_literal |
---|
[d1625f8] | 977 | { $$ = new ExpressionNode( $1 ); } |
---|
[ab57786] | 978 | | asm_clobbers_list_opt ',' string_literal |
---|
[e82aa9df] | 979 | { $$ = (ExpressionNode *)$1->set_last( new ExpressionNode( $3 ) ); } |
---|
[4d51835] | 980 | ; |
---|
[b87a5ed] | 981 | |
---|
[7f5566b] | 982 | label_list: |
---|
| 983 | no_attr_identifier |
---|
[ab57786] | 984 | { |
---|
| 985 | $$ = new LabelNode(); $$->labels.push_back( *$1 ); |
---|
| 986 | delete $1; // allocated by lexer |
---|
| 987 | } |
---|
[7f5566b] | 988 | | label_list ',' no_attr_identifier |
---|
[ab57786] | 989 | { |
---|
| 990 | $$ = $1; $1->labels.push_back( *$3 ); |
---|
| 991 | delete $3; // allocated by lexer |
---|
| 992 | } |
---|
[4d51835] | 993 | ; |
---|
[51b7345] | 994 | |
---|
[c11e31c] | 995 | //******************************* DECLARATIONS ********************************* |
---|
[51b7345] | 996 | |
---|
[b87a5ed] | 997 | declaration_list_opt: // used at beginning of switch statement |
---|
[4d51835] | 998 | pop |
---|
| 999 | { $$ = 0; } |
---|
| 1000 | | declaration_list |
---|
| 1001 | ; |
---|
[51b7345] | 1002 | |
---|
| 1003 | declaration_list: |
---|
[4d51835] | 1004 | declaration |
---|
| 1005 | | declaration_list push declaration |
---|
| 1006 | { $$ = $1->appendList( $3 ); } |
---|
| 1007 | ; |
---|
[51b7345] | 1008 | |
---|
[b87a5ed] | 1009 | old_declaration_list_opt: // used to declare parameter types in K&R style functions |
---|
[4d51835] | 1010 | pop |
---|
| 1011 | { $$ = 0; } |
---|
| 1012 | | old_declaration_list |
---|
| 1013 | ; |
---|
[51b7345] | 1014 | |
---|
| 1015 | old_declaration_list: |
---|
[4d51835] | 1016 | old_declaration |
---|
| 1017 | | old_declaration_list push old_declaration |
---|
| 1018 | { $$ = $1->appendList( $3 ); } |
---|
| 1019 | ; |
---|
[b87a5ed] | 1020 | |
---|
[51b1202] | 1021 | local_label_declaration_opt: // GCC, local label |
---|
[4d51835] | 1022 | // empty |
---|
[51b1202] | 1023 | | local_label_declaration_list |
---|
[4d51835] | 1024 | ; |
---|
[b87a5ed] | 1025 | |
---|
[51b1202] | 1026 | local_label_declaration_list: // GCC, local label |
---|
| 1027 | LABEL local_label_list ';' |
---|
| 1028 | | local_label_declaration_list LABEL local_label_list ';' |
---|
[4d51835] | 1029 | ; |
---|
[b87a5ed] | 1030 | |
---|
[51b1202] | 1031 | local_label_list: // GCC, local label |
---|
[7f5566b] | 1032 | no_attr_identifier_or_type_name {} |
---|
[51b1202] | 1033 | | local_label_list ',' no_attr_identifier_or_type_name {} |
---|
[4d51835] | 1034 | ; |
---|
[b87a5ed] | 1035 | |
---|
| 1036 | declaration: // CFA, new & old style declarations |
---|
[4d51835] | 1037 | new_declaration |
---|
| 1038 | | old_declaration |
---|
| 1039 | ; |
---|
[b87a5ed] | 1040 | |
---|
[de62360d] | 1041 | // C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function |
---|
| 1042 | // declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to |
---|
| 1043 | // the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration |
---|
| 1044 | // modifiers are interpreted from left to right and the entire type specification is distributed across all variables in |
---|
| 1045 | // the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program |
---|
| 1046 | // block, but cannot be mixed within a specific declaration. |
---|
[c11e31c] | 1047 | // |
---|
[b87a5ed] | 1048 | // CFA C |
---|
| 1049 | // [10] int x; int x[10]; // array of 10 integers |
---|
| 1050 | // [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
| 1051 | |
---|
| 1052 | new_declaration: // CFA |
---|
[4d51835] | 1053 | new_variable_declaration pop ';' |
---|
| 1054 | | new_typedef_declaration pop ';' |
---|
| 1055 | | new_function_declaration pop ';' |
---|
| 1056 | | type_declaring_list pop ';' |
---|
[4040425] | 1057 | | trait_specifier pop ';' |
---|
[4d51835] | 1058 | ; |
---|
[b87a5ed] | 1059 | |
---|
| 1060 | new_variable_declaration: // CFA |
---|
[4d51835] | 1061 | new_variable_specifier initializer_opt |
---|
| 1062 | { |
---|
| 1063 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1064 | $$ = $1->addInitializer( $2 ); |
---|
[4d51835] | 1065 | } |
---|
| 1066 | | declaration_qualifier_list new_variable_specifier initializer_opt |
---|
[de62360d] | 1067 | // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude |
---|
| 1068 | // them as a type_qualifier cannot appear in that context. |
---|
[4d51835] | 1069 | { |
---|
| 1070 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1071 | $$ = $2->addQualifiers( $1 )->addInitializer( $3 );; |
---|
[4d51835] | 1072 | } |
---|
[2871210] | 1073 | | new_variable_declaration pop ',' push identifier_or_type_name initializer_opt |
---|
[4d51835] | 1074 | { |
---|
| 1075 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
[3cfe27f] | 1076 | $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); |
---|
[4d51835] | 1077 | } |
---|
| 1078 | ; |
---|
[b87a5ed] | 1079 | |
---|
| 1080 | new_variable_specifier: // CFA |
---|
[de62360d] | 1081 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1082 | // storage-class |
---|
[2871210] | 1083 | new_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1084 | { |
---|
| 1085 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1086 | $$ = $1->addName( $2 ); |
---|
| 1087 | } |
---|
[2871210] | 1088 | | new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1089 | { |
---|
| 1090 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1091 | $$ = $1->addName( $2 ); |
---|
| 1092 | } |
---|
[2871210] | 1093 | | type_qualifier_list new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1094 | { |
---|
| 1095 | typedefTable.setNextIdentifier( *$3 ); |
---|
| 1096 | $$ = $2->addQualifiers( $1 )->addName( $3 ); |
---|
| 1097 | } |
---|
| 1098 | ; |
---|
[b87a5ed] | 1099 | |
---|
| 1100 | new_function_declaration: // CFA |
---|
[4d51835] | 1101 | new_function_specifier |
---|
| 1102 | { |
---|
| 1103 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1104 | $$ = $1; |
---|
| 1105 | } |
---|
| 1106 | | type_qualifier_list new_function_specifier |
---|
| 1107 | { |
---|
| 1108 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1109 | $$ = $2->addQualifiers( $1 ); |
---|
| 1110 | } |
---|
| 1111 | | declaration_qualifier_list new_function_specifier |
---|
| 1112 | { |
---|
| 1113 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1114 | $$ = $2->addQualifiers( $1 ); |
---|
| 1115 | } |
---|
| 1116 | | declaration_qualifier_list type_qualifier_list new_function_specifier |
---|
| 1117 | { |
---|
| 1118 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1119 | $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); |
---|
| 1120 | } |
---|
[2871210] | 1121 | | new_function_declaration pop ',' push identifier_or_type_name |
---|
[4d51835] | 1122 | { |
---|
| 1123 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 1124 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1125 | } |
---|
| 1126 | ; |
---|
[b87a5ed] | 1127 | |
---|
| 1128 | new_function_specifier: // CFA |
---|
[2871210] | 1129 | '[' ']' identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' // S/R conflict |
---|
[4d51835] | 1130 | { |
---|
[2871210] | 1131 | $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true ); |
---|
[4d51835] | 1132 | } |
---|
[2871210] | 1133 | // '[' ']' identifier '(' push new_parameter_type_list_opt pop ')' |
---|
| 1134 | // { |
---|
| 1135 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1136 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1137 | // } |
---|
| 1138 | // | '[' ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')' |
---|
| 1139 | // { |
---|
| 1140 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1141 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1142 | // } |
---|
| 1143 | // | '[' ']' typegen_name |
---|
| 1144 | // identifier_or_type_name must be broken apart because of the sequence: |
---|
[4d51835] | 1145 | // |
---|
[2871210] | 1146 | // '[' ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[4d51835] | 1147 | // '[' ']' type_specifier |
---|
| 1148 | // |
---|
[2871210] | 1149 | // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be |
---|
| 1150 | // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name. |
---|
| 1151 | | new_abstract_tuple identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[de62360d] | 1152 | // To obtain LR(1 ), this rule must be factored out from function return type (see new_abstract_declarator). |
---|
[4d51835] | 1153 | { |
---|
| 1154 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1155 | } |
---|
[2871210] | 1156 | | new_function_return identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[4d51835] | 1157 | { |
---|
| 1158 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1159 | } |
---|
| 1160 | ; |
---|
[b87a5ed] | 1161 | |
---|
| 1162 | new_function_return: // CFA |
---|
[4d51835] | 1163 | '[' push new_parameter_list pop ']' |
---|
| 1164 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 1165 | | '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']' |
---|
[de62360d] | 1166 | // To obtain LR(1 ), the last new_abstract_parameter_list is added into this flattened rule to lookahead to the |
---|
| 1167 | // ']'. |
---|
[4d51835] | 1168 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
| 1169 | ; |
---|
[b87a5ed] | 1170 | |
---|
| 1171 | new_typedef_declaration: // CFA |
---|
[4d51835] | 1172 | TYPEDEF new_variable_specifier |
---|
| 1173 | { |
---|
[de62360d] | 1174 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1175 | $$ = $2->addTypedef(); |
---|
| 1176 | } |
---|
| 1177 | | TYPEDEF new_function_specifier |
---|
| 1178 | { |
---|
[de62360d] | 1179 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1180 | $$ = $2->addTypedef(); |
---|
| 1181 | } |
---|
| 1182 | | new_typedef_declaration pop ',' push no_attr_identifier |
---|
| 1183 | { |
---|
[de62360d] | 1184 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1185 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1186 | } |
---|
| 1187 | ; |
---|
[b87a5ed] | 1188 | |
---|
[de62360d] | 1189 | // Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as |
---|
| 1190 | // a separate form of declaration, which syntactically precludes storage-class specifiers and initialization. |
---|
[51b7345] | 1191 | |
---|
| 1192 | typedef_declaration: |
---|
[4d51835] | 1193 | TYPEDEF type_specifier declarator |
---|
| 1194 | { |
---|
[de62360d] | 1195 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1196 | $$ = $3->addType( $2 )->addTypedef(); |
---|
| 1197 | } |
---|
| 1198 | | typedef_declaration pop ',' push declarator |
---|
| 1199 | { |
---|
[de62360d] | 1200 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1201 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
| 1202 | } |
---|
[de62360d] | 1203 | | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1204 | { |
---|
[de62360d] | 1205 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1206 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
| 1207 | } |
---|
| 1208 | | type_specifier TYPEDEF declarator |
---|
| 1209 | { |
---|
[de62360d] | 1210 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1211 | $$ = $3->addType( $1 )->addTypedef(); |
---|
| 1212 | } |
---|
| 1213 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
| 1214 | { |
---|
[de62360d] | 1215 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
| 1216 | $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 ); |
---|
[4d51835] | 1217 | } |
---|
| 1218 | ; |
---|
[b87a5ed] | 1219 | |
---|
[721f17a] | 1220 | typedef_expression: |
---|
| 1221 | // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression |
---|
[4d51835] | 1222 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
| 1223 | { |
---|
[de62360d] | 1224 | typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); |
---|
[4d51835] | 1225 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1226 | } |
---|
| 1227 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
| 1228 | { |
---|
[de62360d] | 1229 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1230 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1231 | } |
---|
| 1232 | ; |
---|
[51b7345] | 1233 | |
---|
| 1234 | old_declaration: |
---|
[4d51835] | 1235 | declaring_list pop ';' |
---|
| 1236 | | typedef_declaration pop ';' |
---|
| 1237 | | typedef_expression pop ';' // GCC, naming expression type |
---|
| 1238 | | sue_declaration_specifier pop ';' |
---|
| 1239 | ; |
---|
[51b7345] | 1240 | |
---|
| 1241 | declaring_list: |
---|
[de62360d] | 1242 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1243 | // storage-class |
---|
[4d51835] | 1244 | declaration_specifier declarator asm_name_opt initializer_opt |
---|
| 1245 | { |
---|
| 1246 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1247 | $$ = ( $2->addType( $1 ))->addInitializer( $4 ); |
---|
[4d51835] | 1248 | } |
---|
| 1249 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1250 | { |
---|
| 1251 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1252 | $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer( $6 ) ) ); |
---|
[4d51835] | 1253 | } |
---|
| 1254 | ; |
---|
[b87a5ed] | 1255 | |
---|
| 1256 | declaration_specifier: // type specifier + storage class |
---|
[4d51835] | 1257 | basic_declaration_specifier |
---|
| 1258 | | sue_declaration_specifier |
---|
| 1259 | | typedef_declaration_specifier |
---|
| 1260 | | typegen_declaration_specifier |
---|
| 1261 | ; |
---|
[b87a5ed] | 1262 | |
---|
| 1263 | type_specifier: // declaration specifier - storage class |
---|
[4d51835] | 1264 | basic_type_specifier |
---|
| 1265 | | sue_type_specifier |
---|
| 1266 | | typedef_type_specifier |
---|
| 1267 | | typegen_type_specifier |
---|
| 1268 | ; |
---|
[b87a5ed] | 1269 | |
---|
| 1270 | type_qualifier_list_opt: // GCC, used in asm_statement |
---|
[4d51835] | 1271 | // empty |
---|
| 1272 | { $$ = 0; } |
---|
| 1273 | | type_qualifier_list |
---|
| 1274 | ; |
---|
[51b7345] | 1275 | |
---|
| 1276 | type_qualifier_list: |
---|
[de62360d] | 1277 | // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration. |
---|
[4d51835] | 1278 | // |
---|
[de62360d] | 1279 | // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same |
---|
| 1280 | // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it |
---|
| 1281 | // appeared only once. |
---|
[4d51835] | 1282 | type_qualifier |
---|
| 1283 | | type_qualifier_list type_qualifier |
---|
| 1284 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1285 | ; |
---|
[51b7345] | 1286 | |
---|
| 1287 | type_qualifier: |
---|
[4d51835] | 1288 | type_qualifier_name |
---|
| 1289 | | attribute |
---|
[c1c1112] | 1290 | //{ $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
[4d51835] | 1291 | ; |
---|
[51b7345] | 1292 | |
---|
| 1293 | type_qualifier_name: |
---|
[4d51835] | 1294 | CONST |
---|
| 1295 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
| 1296 | | RESTRICT |
---|
| 1297 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); } |
---|
| 1298 | | VOLATILE |
---|
| 1299 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); } |
---|
| 1300 | | LVALUE // CFA |
---|
| 1301 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); } |
---|
| 1302 | | ATOMIC |
---|
| 1303 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); } |
---|
| 1304 | | FORALL '(' |
---|
| 1305 | { |
---|
| 1306 | typedefTable.enterScope(); |
---|
| 1307 | } |
---|
| 1308 | type_parameter_list ')' // CFA |
---|
| 1309 | { |
---|
| 1310 | typedefTable.leaveScope(); |
---|
| 1311 | $$ = DeclarationNode::newForall( $4 ); |
---|
| 1312 | } |
---|
| 1313 | ; |
---|
[51b7345] | 1314 | |
---|
| 1315 | declaration_qualifier_list: |
---|
[4d51835] | 1316 | storage_class_list |
---|
[de62360d] | 1317 | | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1318 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1319 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
| 1320 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1321 | ; |
---|
[51b7345] | 1322 | |
---|
| 1323 | storage_class_list: |
---|
[de62360d] | 1324 | // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that |
---|
| 1325 | // only one of each is specified, except for inline, which can appear with the others. |
---|
[4d51835] | 1326 | // |
---|
[de62360d] | 1327 | // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration |
---|
| 1328 | // specifiers in a declaration. |
---|
[4d51835] | 1329 | storage_class |
---|
| 1330 | | storage_class_list storage_class |
---|
| 1331 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1332 | ; |
---|
[51b7345] | 1333 | |
---|
| 1334 | storage_class: |
---|
[4d51835] | 1335 | EXTERN |
---|
| 1336 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); } |
---|
| 1337 | | STATIC |
---|
| 1338 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); } |
---|
| 1339 | | AUTO |
---|
| 1340 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); } |
---|
| 1341 | | REGISTER |
---|
| 1342 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); } |
---|
| 1343 | | INLINE // C99 |
---|
[c1c1112] | 1344 | //{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); } |
---|
| 1345 | { $$ = new DeclarationNode; $$->isInline = true; } |
---|
[4d51835] | 1346 | | FORTRAN // C99 |
---|
| 1347 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); } |
---|
[68cd1ce] | 1348 | | NORETURN // C11 |
---|
[c1c1112] | 1349 | //{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Noreturn ); } |
---|
| 1350 | { $$ = new DeclarationNode; $$->isNoreturn = true; } |
---|
[68cd1ce] | 1351 | | THREADLOCAL // C11 |
---|
| 1352 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Threadlocal ); } |
---|
[4d51835] | 1353 | ; |
---|
[51b7345] | 1354 | |
---|
| 1355 | basic_type_name: |
---|
[4d51835] | 1356 | CHAR |
---|
| 1357 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
| 1358 | | DOUBLE |
---|
| 1359 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
| 1360 | | FLOAT |
---|
| 1361 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
| 1362 | | INT |
---|
| 1363 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
| 1364 | | LONG |
---|
| 1365 | { $$ = DeclarationNode::newModifier( DeclarationNode::Long ); } |
---|
| 1366 | | SHORT |
---|
| 1367 | { $$ = DeclarationNode::newModifier( DeclarationNode::Short ); } |
---|
| 1368 | | SIGNED |
---|
| 1369 | { $$ = DeclarationNode::newModifier( DeclarationNode::Signed ); } |
---|
| 1370 | | UNSIGNED |
---|
| 1371 | { $$ = DeclarationNode::newModifier( DeclarationNode::Unsigned ); } |
---|
| 1372 | | VOID |
---|
| 1373 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
| 1374 | | BOOL // C99 |
---|
| 1375 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
| 1376 | | COMPLEX // C99 |
---|
| 1377 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); } |
---|
| 1378 | | IMAGINARY // C99 |
---|
| 1379 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); } |
---|
[90c3b1c] | 1380 | | VALIST // GCC, __builtin_va_list |
---|
| 1381 | { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); } |
---|
[4d51835] | 1382 | ; |
---|
[51b7345] | 1383 | |
---|
| 1384 | basic_declaration_specifier: |
---|
[4d51835] | 1385 | // A semantic check is necessary for conflicting storage classes. |
---|
| 1386 | basic_type_specifier |
---|
| 1387 | | declaration_qualifier_list basic_type_specifier |
---|
| 1388 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1389 | | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1390 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1391 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
| 1392 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1393 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
| 1394 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
| 1395 | ; |
---|
[51b7345] | 1396 | |
---|
| 1397 | basic_type_specifier: |
---|
[4d51835] | 1398 | direct_type_name |
---|
| 1399 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
| 1400 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
| 1401 | ; |
---|
[51b7345] | 1402 | |
---|
| 1403 | direct_type_name: |
---|
[4d51835] | 1404 | // A semantic check is necessary for conflicting type qualifiers. |
---|
| 1405 | basic_type_name |
---|
| 1406 | | type_qualifier_list basic_type_name |
---|
| 1407 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1408 | | direct_type_name type_qualifier |
---|
| 1409 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1410 | | direct_type_name basic_type_name |
---|
| 1411 | { $$ = $1->addType( $2 ); } |
---|
| 1412 | ; |
---|
[51b7345] | 1413 | |
---|
| 1414 | indirect_type_name: |
---|
[4d51835] | 1415 | TYPEOF '(' type_name ')' // GCC: typeof(x) y; |
---|
| 1416 | { $$ = $3; } |
---|
| 1417 | | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y; |
---|
| 1418 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
| 1419 | | ATTR_TYPEGENname '(' type_name ')' // CFA: e.g., @type(x) y; |
---|
| 1420 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1421 | | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y; |
---|
| 1422 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1423 | ; |
---|
[51b7345] | 1424 | |
---|
| 1425 | sue_declaration_specifier: |
---|
[4d51835] | 1426 | sue_type_specifier |
---|
| 1427 | | declaration_qualifier_list sue_type_specifier |
---|
| 1428 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1429 | | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1430 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1431 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
| 1432 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1433 | ; |
---|
[51b7345] | 1434 | |
---|
| 1435 | sue_type_specifier: |
---|
[4d51835] | 1436 | elaborated_type_name // struct, union, enum |
---|
| 1437 | | type_qualifier_list elaborated_type_name |
---|
| 1438 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1439 | | sue_type_specifier type_qualifier |
---|
| 1440 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1441 | ; |
---|
[51b7345] | 1442 | |
---|
| 1443 | typedef_declaration_specifier: |
---|
[4d51835] | 1444 | typedef_type_specifier |
---|
| 1445 | | declaration_qualifier_list typedef_type_specifier |
---|
| 1446 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1447 | | typedef_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1448 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1449 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
| 1450 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1451 | ; |
---|
[b87a5ed] | 1452 | |
---|
| 1453 | typedef_type_specifier: // typedef types |
---|
[4d51835] | 1454 | TYPEDEFname |
---|
| 1455 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
| 1456 | | type_qualifier_list TYPEDEFname |
---|
| 1457 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
| 1458 | | typedef_type_specifier type_qualifier |
---|
| 1459 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1460 | ; |
---|
[51b7345] | 1461 | |
---|
| 1462 | elaborated_type_name: |
---|
[4d51835] | 1463 | aggregate_name |
---|
| 1464 | | enum_name |
---|
| 1465 | ; |
---|
[51b7345] | 1466 | |
---|
| 1467 | aggregate_name: |
---|
[4d51835] | 1468 | aggregate_key '{' field_declaration_list '}' |
---|
[5d125e4] | 1469 | { $$ = DeclarationNode::newAggregate( $1, 0, 0, $3, true ); } |
---|
[2871210] | 1470 | | aggregate_key no_attr_identifier_or_type_name |
---|
[45161b4d] | 1471 | { |
---|
| 1472 | typedefTable.makeTypedef( *$2 ); |
---|
[5d125e4] | 1473 | $$ = DeclarationNode::newAggregate( $1, $2, 0, 0, false ); |
---|
[45161b4d] | 1474 | } |
---|
| 1475 | | aggregate_key no_attr_identifier_or_type_name |
---|
| 1476 | { typedefTable.makeTypedef( *$2 ); } |
---|
| 1477 | '{' field_declaration_list '}' |
---|
[5d125e4] | 1478 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, $5, true ); } |
---|
[721f17a] | 1479 | | aggregate_key '(' type_name_list ')' '{' field_declaration_list '}' // CFA |
---|
[5d125e4] | 1480 | { $$ = DeclarationNode::newAggregate( $1, 0, $3, $6, false ); } |
---|
[2871210] | 1481 | | aggregate_key typegen_name // CFA, S/R conflict |
---|
| 1482 | { $$ = $2; } |
---|
[4d51835] | 1483 | ; |
---|
[51b7345] | 1484 | |
---|
| 1485 | aggregate_key: |
---|
[4d51835] | 1486 | STRUCT attribute_list_opt |
---|
| 1487 | { $$ = DeclarationNode::Struct; } |
---|
| 1488 | | UNION attribute_list_opt |
---|
| 1489 | { $$ = DeclarationNode::Union; } |
---|
| 1490 | ; |
---|
[51b7345] | 1491 | |
---|
| 1492 | field_declaration_list: |
---|
[5d125e4] | 1493 | // empty |
---|
| 1494 | { $$ = 0; } |
---|
[4d51835] | 1495 | | field_declaration_list field_declaration |
---|
[5d125e4] | 1496 | { $$ = $1 != 0 ? $1->appendList( $2 ) : $2; } |
---|
[4d51835] | 1497 | ; |
---|
[51b7345] | 1498 | |
---|
| 1499 | field_declaration: |
---|
[4d51835] | 1500 | new_field_declaring_list ';' // CFA, new style field declaration |
---|
| 1501 | | EXTENSION new_field_declaring_list ';' // GCC |
---|
[ca35c51] | 1502 | { $$ = $2->set_extension( true ); } |
---|
[4d51835] | 1503 | | field_declaring_list ';' |
---|
| 1504 | | EXTENSION field_declaring_list ';' // GCC |
---|
[8e9cbb2] | 1505 | { // mark all fields in list |
---|
[926af74] | 1506 | for ( DeclarationNode *iter = $2; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) |
---|
[8e9cbb2] | 1507 | iter->set_extension( true ); |
---|
| 1508 | $$ = $2; |
---|
| 1509 | } |
---|
[4d51835] | 1510 | ; |
---|
[b87a5ed] | 1511 | |
---|
| 1512 | new_field_declaring_list: // CFA, new style field declaration |
---|
[4d51835] | 1513 | new_abstract_declarator_tuple // CFA, no field name |
---|
[2871210] | 1514 | | new_abstract_declarator_tuple no_attr_identifier_or_type_name |
---|
[4d51835] | 1515 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1516 | | new_field_declaring_list ',' no_attr_identifier_or_type_name |
---|
[4d51835] | 1517 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
| 1518 | | new_field_declaring_list ',' // CFA, no field name |
---|
| 1519 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
| 1520 | ; |
---|
[51b7345] | 1521 | |
---|
| 1522 | field_declaring_list: |
---|
[4d51835] | 1523 | type_specifier field_declarator |
---|
| 1524 | { $$ = $2->addType( $1 ); } |
---|
| 1525 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
| 1526 | { $$ = $1->appendList( $1->cloneBaseType( $4 ) ); } |
---|
| 1527 | ; |
---|
[51b7345] | 1528 | |
---|
| 1529 | field_declarator: |
---|
[4d51835] | 1530 | // empty |
---|
| 1531 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name |
---|
| 1532 | | bit_subrange_size // no field name |
---|
| 1533 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
| 1534 | | variable_declarator bit_subrange_size_opt |
---|
| 1535 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1536 | { $$ = $1->addBitfield( $2 ); } |
---|
[c6b1105] | 1537 | | variable_type_redeclarator bit_subrange_size_opt |
---|
[4d51835] | 1538 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1539 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1540 | | variable_abstract_declarator // CFA, no field name |
---|
| 1541 | ; |
---|
[51b7345] | 1542 | |
---|
| 1543 | bit_subrange_size_opt: |
---|
[4d51835] | 1544 | // empty |
---|
| 1545 | { $$ = 0; } |
---|
| 1546 | | bit_subrange_size |
---|
| 1547 | { $$ = $1; } |
---|
| 1548 | ; |
---|
[51b7345] | 1549 | |
---|
| 1550 | bit_subrange_size: |
---|
[4d51835] | 1551 | ':' constant_expression |
---|
| 1552 | { $$ = $2; } |
---|
| 1553 | ; |
---|
[51b7345] | 1554 | |
---|
| 1555 | enum_key: |
---|
[4d51835] | 1556 | ENUM attribute_list_opt |
---|
| 1557 | ; |
---|
[51b7345] | 1558 | |
---|
| 1559 | enum_name: |
---|
[4d51835] | 1560 | enum_key '{' enumerator_list comma_opt '}' |
---|
| 1561 | { $$ = DeclarationNode::newEnum( 0, $3 ); } |
---|
[2871210] | 1562 | | enum_key no_attr_identifier_or_type_name |
---|
[45161b4d] | 1563 | { |
---|
| 1564 | typedefTable.makeTypedef( *$2 ); |
---|
| 1565 | $$ = DeclarationNode::newEnum( $2, 0 ); |
---|
| 1566 | } |
---|
| 1567 | | enum_key no_attr_identifier_or_type_name |
---|
| 1568 | { typedefTable.makeTypedef( *$2 ); } |
---|
| 1569 | '{' enumerator_list comma_opt '}' |
---|
| 1570 | { $$ = DeclarationNode::newEnum( $2, $5 ); } |
---|
[4d51835] | 1571 | ; |
---|
[51b7345] | 1572 | |
---|
| 1573 | enumerator_list: |
---|
[2871210] | 1574 | no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1575 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
[2871210] | 1576 | | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1577 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
| 1578 | ; |
---|
[51b7345] | 1579 | |
---|
| 1580 | enumerator_value_opt: |
---|
[4d51835] | 1581 | // empty |
---|
| 1582 | { $$ = 0; } |
---|
| 1583 | | '=' constant_expression |
---|
| 1584 | { $$ = $2; } |
---|
| 1585 | ; |
---|
[51b7345] | 1586 | |
---|
[c11e31c] | 1587 | // Minimum of one parameter after which ellipsis is allowed only at the end. |
---|
[51b7345] | 1588 | |
---|
[b87a5ed] | 1589 | new_parameter_type_list_opt: // CFA |
---|
[4d51835] | 1590 | // empty |
---|
| 1591 | { $$ = 0; } |
---|
| 1592 | | new_parameter_type_list |
---|
| 1593 | ; |
---|
[b87a5ed] | 1594 | |
---|
| 1595 | new_parameter_type_list: // CFA, abstract + real |
---|
[4d51835] | 1596 | new_abstract_parameter_list |
---|
| 1597 | | new_parameter_list |
---|
| 1598 | | new_parameter_list pop ',' push new_abstract_parameter_list |
---|
| 1599 | { $$ = $1->appendList( $5 ); } |
---|
| 1600 | | new_abstract_parameter_list pop ',' push ELLIPSIS |
---|
| 1601 | { $$ = $1->addVarArgs(); } |
---|
| 1602 | | new_parameter_list pop ',' push ELLIPSIS |
---|
| 1603 | { $$ = $1->addVarArgs(); } |
---|
| 1604 | ; |
---|
[b87a5ed] | 1605 | |
---|
| 1606 | new_parameter_list: // CFA |
---|
[de62360d] | 1607 | // To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last new_abstract_parameter_list is |
---|
| 1608 | // factored out from new_parameter_list, flattening the rules to get lookahead to the ']'. |
---|
[4d51835] | 1609 | new_parameter_declaration |
---|
| 1610 | | new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1611 | { $$ = $1->appendList( $5 ); } |
---|
| 1612 | | new_parameter_list pop ',' push new_parameter_declaration |
---|
| 1613 | { $$ = $1->appendList( $5 ); } |
---|
| 1614 | | new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1615 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
| 1616 | ; |
---|
[b87a5ed] | 1617 | |
---|
| 1618 | new_abstract_parameter_list: // CFA, new & old style abstract |
---|
[4d51835] | 1619 | new_abstract_parameter_declaration |
---|
| 1620 | | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration |
---|
| 1621 | { $$ = $1->appendList( $5 ); } |
---|
| 1622 | ; |
---|
[51b7345] | 1623 | |
---|
| 1624 | parameter_type_list_opt: |
---|
[4d51835] | 1625 | // empty |
---|
| 1626 | { $$ = 0; } |
---|
| 1627 | | parameter_type_list |
---|
| 1628 | ; |
---|
[51b7345] | 1629 | |
---|
| 1630 | parameter_type_list: |
---|
[4d51835] | 1631 | parameter_list |
---|
| 1632 | | parameter_list pop ',' push ELLIPSIS |
---|
| 1633 | { $$ = $1->addVarArgs(); } |
---|
| 1634 | ; |
---|
[b87a5ed] | 1635 | |
---|
| 1636 | parameter_list: // abstract + real |
---|
[4d51835] | 1637 | abstract_parameter_declaration |
---|
| 1638 | | parameter_declaration |
---|
| 1639 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
| 1640 | { $$ = $1->appendList( $5 ); } |
---|
| 1641 | | parameter_list pop ',' push parameter_declaration |
---|
| 1642 | { $$ = $1->appendList( $5 ); } |
---|
| 1643 | ; |
---|
[51b7345] | 1644 | |
---|
[de62360d] | 1645 | // Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics |
---|
[2871210] | 1646 | // for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes. |
---|
[51b7345] | 1647 | |
---|
[b87a5ed] | 1648 | new_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1649 | parameter_declaration |
---|
[2871210] | 1650 | | new_identifier_parameter_declarator_no_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1651 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1652 | | new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1653 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1654 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1655 | | type_qualifier_list new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1656 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
| 1657 | | new_function_specifier |
---|
| 1658 | ; |
---|
[b87a5ed] | 1659 | |
---|
| 1660 | new_abstract_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1661 | abstract_parameter_declaration |
---|
| 1662 | | new_identifier_parameter_declarator_no_tuple |
---|
| 1663 | | new_abstract_tuple |
---|
| 1664 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1665 | | type_qualifier_list new_abstract_tuple |
---|
| 1666 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1667 | | new_abstract_function |
---|
| 1668 | ; |
---|
[51b7345] | 1669 | |
---|
| 1670 | parameter_declaration: |
---|
[4d51835] | 1671 | declaration_specifier identifier_parameter_declarator assignment_opt |
---|
| 1672 | { |
---|
| 1673 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1674 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1675 | } |
---|
[2871210] | 1676 | | declaration_specifier type_parameter_redeclarator assignment_opt |
---|
[4d51835] | 1677 | { |
---|
| 1678 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1679 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1680 | } |
---|
| 1681 | ; |
---|
[51b7345] | 1682 | |
---|
| 1683 | abstract_parameter_declaration: |
---|
[4d51835] | 1684 | declaration_specifier |
---|
| 1685 | | declaration_specifier abstract_parameter_declarator |
---|
| 1686 | { $$ = $2->addType( $1 ); } |
---|
| 1687 | ; |
---|
[51b7345] | 1688 | |
---|
[c11e31c] | 1689 | // ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
[de62360d] | 1690 | // parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on |
---|
| 1691 | // identifiers. The ANSI-style parameter-list can redefine a typedef name. |
---|
[51b7345] | 1692 | |
---|
[b87a5ed] | 1693 | identifier_list: // K&R-style parameter list => no types |
---|
[4d51835] | 1694 | no_attr_identifier |
---|
| 1695 | { $$ = DeclarationNode::newName( $1 ); } |
---|
| 1696 | | identifier_list ',' no_attr_identifier |
---|
| 1697 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
| 1698 | ; |
---|
[51b7345] | 1699 | |
---|
[2871210] | 1700 | identifier_or_type_name: |
---|
[4d51835] | 1701 | identifier |
---|
| 1702 | | TYPEDEFname |
---|
| 1703 | | TYPEGENname |
---|
| 1704 | ; |
---|
[51b7345] | 1705 | |
---|
[2871210] | 1706 | no_01_identifier_or_type_name: |
---|
[4d51835] | 1707 | no_01_identifier |
---|
| 1708 | | TYPEDEFname |
---|
| 1709 | | TYPEGENname |
---|
| 1710 | ; |
---|
[51b7345] | 1711 | |
---|
[2871210] | 1712 | no_attr_identifier_or_type_name: |
---|
[4d51835] | 1713 | no_attr_identifier |
---|
| 1714 | | TYPEDEFname |
---|
[721f17a] | 1715 | | TYPEGENname |
---|
[4d51835] | 1716 | ; |
---|
[b87a5ed] | 1717 | |
---|
| 1718 | type_name_no_function: // sizeof, alignof, cast (constructor) |
---|
[4d51835] | 1719 | new_abstract_declarator_tuple // CFA |
---|
| 1720 | | type_specifier |
---|
| 1721 | | type_specifier variable_abstract_declarator |
---|
| 1722 | { $$ = $2->addType( $1 ); } |
---|
| 1723 | ; |
---|
[b87a5ed] | 1724 | |
---|
| 1725 | type_name: // typeof, assertion |
---|
[4d51835] | 1726 | new_abstract_declarator_tuple // CFA |
---|
| 1727 | | new_abstract_function // CFA |
---|
| 1728 | | type_specifier |
---|
| 1729 | | type_specifier abstract_declarator |
---|
| 1730 | { $$ = $2->addType( $1 ); } |
---|
| 1731 | ; |
---|
[51b7345] | 1732 | |
---|
| 1733 | initializer_opt: |
---|
[4d51835] | 1734 | // empty |
---|
| 1735 | { $$ = 0; } |
---|
[2871210] | 1736 | | '=' initializer |
---|
| 1737 | { $$ = $2; } |
---|
[097e2b0] | 1738 | | ATassign initializer |
---|
[974906e2] | 1739 | { $$ = $2->set_maybeConstructed( false ); } |
---|
[4d51835] | 1740 | ; |
---|
[51b7345] | 1741 | |
---|
| 1742 | initializer: |
---|
[de62360d] | 1743 | assignment_expression { $$ = new InitializerNode( $1 ); } |
---|
| 1744 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); } |
---|
[4d51835] | 1745 | ; |
---|
[51b7345] | 1746 | |
---|
| 1747 | initializer_list: |
---|
[097e2b0] | 1748 | // empty |
---|
| 1749 | { $$ = 0; } |
---|
| 1750 | | initializer |
---|
[4d51835] | 1751 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
[1d4580a] | 1752 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); } |
---|
[4d51835] | 1753 | | initializer_list ',' designation initializer |
---|
[1d4580a] | 1754 | { $$ = (InitializerNode *)( $1->set_last( $4->set_designators( $3 ) ) ); } |
---|
[4d51835] | 1755 | ; |
---|
[b87a5ed] | 1756 | |
---|
[de62360d] | 1757 | // There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of |
---|
| 1758 | // '=' to separator the designator from the initializer value, as in: |
---|
[c11e31c] | 1759 | // |
---|
[b87a5ed] | 1760 | // int x[10] = { [1] = 3 }; |
---|
[c11e31c] | 1761 | // |
---|
[de62360d] | 1762 | // The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA |
---|
| 1763 | // changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for |
---|
| 1764 | // field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to |
---|
| 1765 | // shift/reduce conflicts |
---|
[51b7345] | 1766 | |
---|
| 1767 | designation: |
---|
[4d51835] | 1768 | designator_list ':' // C99, CFA uses ":" instead of "=" |
---|
[2871210] | 1769 | | no_attr_identifier_or_type_name ':' // GCC, field name |
---|
[d1625f8] | 1770 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
---|
[4d51835] | 1771 | ; |
---|
[51b7345] | 1772 | |
---|
[b87a5ed] | 1773 | designator_list: // C99 |
---|
[4d51835] | 1774 | designator |
---|
[2871210] | 1775 | | designator_list designator |
---|
[1d4580a] | 1776 | { $$ = (ExpressionNode *)( $1->set_last( $2 ) ); } |
---|
[d1625f8] | 1777 | //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); } |
---|
[4d51835] | 1778 | ; |
---|
[51b7345] | 1779 | |
---|
| 1780 | designator: |
---|
[d1625f8] | 1781 | '.' no_attr_identifier_or_type_name // C99, field name |
---|
| 1782 | { $$ = new ExpressionNode( build_varref( $2 ) ); } |
---|
[4d51835] | 1783 | | '[' push assignment_expression pop ']' // C99, single array element |
---|
[de62360d] | 1784 | // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple. |
---|
[d1625f8] | 1785 | { $$ = $3; } |
---|
[4d51835] | 1786 | | '[' push subrange pop ']' // CFA, multiple array elements |
---|
[d1625f8] | 1787 | { $$ = $3; } |
---|
[4d51835] | 1788 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements |
---|
[d1625f8] | 1789 | { $$ = new ExpressionNode( build_range( $3, $5 ) ); } |
---|
[4d51835] | 1790 | | '.' '[' push field_list pop ']' // CFA, tuple field selector |
---|
[d1625f8] | 1791 | { $$ = $4; } |
---|
[4d51835] | 1792 | ; |
---|
[51b7345] | 1793 | |
---|
[de62360d] | 1794 | // The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters, |
---|
| 1795 | // rather than an object-oriented type system. This required four groups of extensions: |
---|
[c11e31c] | 1796 | // |
---|
| 1797 | // Overloading: function, data, and operator identifiers may be overloaded. |
---|
| 1798 | // |
---|
[de62360d] | 1799 | // Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object |
---|
| 1800 | // and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide |
---|
| 1801 | // definitions of new types. Type declarations with storage class "extern" provide opaque types. |
---|
[c11e31c] | 1802 | // |
---|
[de62360d] | 1803 | // Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call |
---|
| 1804 | // site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
[c11e31c] | 1805 | // |
---|
| 1806 | // Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
[de62360d] | 1807 | // types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass |
---|
| 1808 | // hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or |
---|
| 1809 | // types provide the operations declared by a specification. Assertions are normally used to declare requirements |
---|
| 1810 | // on type arguments of polymorphic functions. |
---|
[c11e31c] | 1811 | |
---|
[b87a5ed] | 1812 | typegen_declaration_specifier: // CFA |
---|
[4d51835] | 1813 | typegen_type_specifier |
---|
| 1814 | | declaration_qualifier_list typegen_type_specifier |
---|
| 1815 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1816 | | typegen_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1817 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1818 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
| 1819 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1820 | ; |
---|
[b87a5ed] | 1821 | |
---|
| 1822 | typegen_type_specifier: // CFA |
---|
[2871210] | 1823 | typegen_name |
---|
| 1824 | | type_qualifier_list typegen_name |
---|
| 1825 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 1826 | | typegen_type_specifier type_qualifier |
---|
| 1827 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1828 | ; |
---|
[b87a5ed] | 1829 | |
---|
[2871210] | 1830 | typegen_name: // CFA |
---|
| 1831 | TYPEGENname '(' type_name_list ')' |
---|
| 1832 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
| 1833 | ; |
---|
| 1834 | |
---|
[b87a5ed] | 1835 | type_parameter_list: // CFA |
---|
[4d51835] | 1836 | type_parameter assignment_opt |
---|
| 1837 | | type_parameter_list ',' type_parameter assignment_opt |
---|
| 1838 | { $$ = $1->appendList( $3 ); } |
---|
| 1839 | ; |
---|
[b87a5ed] | 1840 | |
---|
| 1841 | type_parameter: // CFA |
---|
[2871210] | 1842 | type_class no_attr_identifier_or_type_name |
---|
| 1843 | { typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); } |
---|
[4d51835] | 1844 | assertion_list_opt |
---|
| 1845 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
| 1846 | | type_specifier identifier_parameter_declarator |
---|
| 1847 | ; |
---|
[b87a5ed] | 1848 | |
---|
| 1849 | type_class: // CFA |
---|
[4040425] | 1850 | OTYPE |
---|
[4d51835] | 1851 | { $$ = DeclarationNode::Type; } |
---|
| 1852 | | DTYPE |
---|
| 1853 | { $$ = DeclarationNode::Ftype; } |
---|
| 1854 | | FTYPE |
---|
| 1855 | { $$ = DeclarationNode::Dtype; } |
---|
| 1856 | ; |
---|
[b87a5ed] | 1857 | |
---|
| 1858 | assertion_list_opt: // CFA |
---|
[4d51835] | 1859 | // empty |
---|
| 1860 | { $$ = 0; } |
---|
| 1861 | | assertion_list_opt assertion |
---|
[4e06c1e] | 1862 | { $$ = $1 != 0 ? $1->appendList( $2 ) : $2; } |
---|
[4d51835] | 1863 | ; |
---|
[b87a5ed] | 1864 | |
---|
| 1865 | assertion: // CFA |
---|
[2871210] | 1866 | '|' no_attr_identifier_or_type_name '(' type_name_list ')' |
---|
[4d51835] | 1867 | { |
---|
[4040425] | 1868 | typedefTable.openTrait( *$2 ); |
---|
| 1869 | $$ = DeclarationNode::newTraitUse( $2, $4 ); |
---|
[4d51835] | 1870 | } |
---|
[4040425] | 1871 | | '|' '{' push trait_declaration_list '}' |
---|
[4d51835] | 1872 | { $$ = $4; } |
---|
[4040425] | 1873 | | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list '}' '(' type_name_list ')' |
---|
[4d51835] | 1874 | { $$ = 0; } |
---|
| 1875 | ; |
---|
[b87a5ed] | 1876 | |
---|
| 1877 | type_name_list: // CFA |
---|
[4d51835] | 1878 | type_name |
---|
[d1625f8] | 1879 | { $$ = new ExpressionNode( build_typevalue( $1 ) ); } |
---|
[4d51835] | 1880 | | assignment_expression |
---|
| 1881 | | type_name_list ',' type_name |
---|
[1d4580a] | 1882 | { $$ = (ExpressionNode *)( $1->set_last( new ExpressionNode( build_typevalue( $3 ) ) ) ); } |
---|
[4d51835] | 1883 | | type_name_list ',' assignment_expression |
---|
[1d4580a] | 1884 | { $$ = (ExpressionNode *)( $1->set_last( $3 )); } |
---|
[4d51835] | 1885 | ; |
---|
[b87a5ed] | 1886 | |
---|
| 1887 | type_declaring_list: // CFA |
---|
[4040425] | 1888 | OTYPE type_declarator |
---|
[4d51835] | 1889 | { $$ = $2; } |
---|
[4040425] | 1890 | | storage_class_list OTYPE type_declarator |
---|
[4d51835] | 1891 | { $$ = $3->addQualifiers( $1 ); } |
---|
| 1892 | | type_declaring_list ',' type_declarator |
---|
| 1893 | { $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); } |
---|
| 1894 | ; |
---|
[b87a5ed] | 1895 | |
---|
| 1896 | type_declarator: // CFA |
---|
[4d51835] | 1897 | type_declarator_name assertion_list_opt |
---|
| 1898 | { $$ = $1->addAssertions( $2 ); } |
---|
| 1899 | | type_declarator_name assertion_list_opt '=' type_name |
---|
| 1900 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
| 1901 | ; |
---|
[b87a5ed] | 1902 | |
---|
| 1903 | type_declarator_name: // CFA |
---|
[2871210] | 1904 | no_attr_identifier_or_type_name |
---|
[4d51835] | 1905 | { |
---|
[de62360d] | 1906 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TD ); |
---|
[4d51835] | 1907 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
| 1908 | } |
---|
[2871210] | 1909 | | no_01_identifier_or_type_name '(' push type_parameter_list pop ')' |
---|
[4d51835] | 1910 | { |
---|
[de62360d] | 1911 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TG ); |
---|
[4d51835] | 1912 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
| 1913 | } |
---|
| 1914 | ; |
---|
[b87a5ed] | 1915 | |
---|
[4040425] | 1916 | trait_specifier: // CFA |
---|
| 1917 | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}' |
---|
[4d51835] | 1918 | { |
---|
[de62360d] | 1919 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 1920 | $$ = DeclarationNode::newTrait( $2, $5, 0 ); |
---|
[4d51835] | 1921 | } |
---|
[4040425] | 1922 | | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' |
---|
[4d51835] | 1923 | { |
---|
[4040425] | 1924 | typedefTable.enterTrait( *$2 ); |
---|
[4d51835] | 1925 | typedefTable.enterScope(); |
---|
| 1926 | } |
---|
[4040425] | 1927 | trait_declaration_list '}' |
---|
[4d51835] | 1928 | { |
---|
[4040425] | 1929 | typedefTable.leaveTrait(); |
---|
[de62360d] | 1930 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 1931 | $$ = DeclarationNode::newTrait( $2, $5, $10 ); |
---|
[4d51835] | 1932 | } |
---|
| 1933 | ; |
---|
[b87a5ed] | 1934 | |
---|
[4040425] | 1935 | trait_declaration_list: // CFA |
---|
| 1936 | trait_declaration |
---|
| 1937 | | trait_declaration_list push trait_declaration |
---|
[4d51835] | 1938 | { $$ = $1->appendList( $3 ); } |
---|
| 1939 | ; |
---|
[b87a5ed] | 1940 | |
---|
[4040425] | 1941 | trait_declaration: // CFA |
---|
| 1942 | new_trait_declaring_list pop ';' |
---|
| 1943 | | trait_declaring_list pop ';' |
---|
[4d51835] | 1944 | ; |
---|
[b87a5ed] | 1945 | |
---|
[4040425] | 1946 | new_trait_declaring_list: // CFA |
---|
[4d51835] | 1947 | new_variable_specifier |
---|
| 1948 | { |
---|
| 1949 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1950 | $$ = $1; |
---|
| 1951 | } |
---|
| 1952 | | new_function_specifier |
---|
| 1953 | { |
---|
| 1954 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1955 | $$ = $1; |
---|
| 1956 | } |
---|
[4040425] | 1957 | | new_trait_declaring_list pop ',' push identifier_or_type_name |
---|
[4d51835] | 1958 | { |
---|
[de62360d] | 1959 | typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID ); |
---|
[4d51835] | 1960 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1961 | } |
---|
| 1962 | ; |
---|
[b87a5ed] | 1963 | |
---|
[4040425] | 1964 | trait_declaring_list: // CFA |
---|
[4d51835] | 1965 | type_specifier declarator |
---|
| 1966 | { |
---|
| 1967 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1968 | $$ = $2->addType( $1 ); |
---|
| 1969 | } |
---|
[4040425] | 1970 | | trait_declaring_list pop ',' push declarator |
---|
[4d51835] | 1971 | { |
---|
| 1972 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1973 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
| 1974 | } |
---|
| 1975 | ; |
---|
[51b7345] | 1976 | |
---|
[c11e31c] | 1977 | //***************************** EXTERNAL DEFINITIONS ***************************** |
---|
[51b7345] | 1978 | |
---|
| 1979 | translation_unit: |
---|
[4d51835] | 1980 | // empty |
---|
| 1981 | {} // empty input file |
---|
| 1982 | | external_definition_list |
---|
[926af74] | 1983 | { parseTree = parseTree != nullptr ? parseTree->appendList( $1 ) : $1; } |
---|
[4d51835] | 1984 | ; |
---|
[51b7345] | 1985 | |
---|
| 1986 | external_definition_list: |
---|
[4d51835] | 1987 | external_definition |
---|
| 1988 | | external_definition_list push external_definition |
---|
[926af74] | 1989 | { $$ = $1 != nullptr ? $1->appendList( $3 ) : $3; } |
---|
[4d51835] | 1990 | ; |
---|
[51b7345] | 1991 | |
---|
| 1992 | external_definition_list_opt: |
---|
[4d51835] | 1993 | // empty |
---|
| 1994 | { $$ = 0; } |
---|
| 1995 | | external_definition_list |
---|
| 1996 | ; |
---|
[51b7345] | 1997 | |
---|
| 1998 | external_definition: |
---|
[4d51835] | 1999 | declaration |
---|
| 2000 | | external_function_definition |
---|
| 2001 | | asm_statement // GCC, global assembler statement |
---|
| 2002 | {} |
---|
| 2003 | | EXTERN STRINGliteral |
---|
| 2004 | { |
---|
[3b8e52c] | 2005 | linkageStack.push( linkage ); // handle nested extern "C"/"Cforall" |
---|
[ab57786] | 2006 | linkage = LinkageSpec::fromString( *$2 ); |
---|
[4d51835] | 2007 | } |
---|
| 2008 | '{' external_definition_list_opt '}' // C++-style linkage specifier |
---|
| 2009 | { |
---|
| 2010 | linkage = linkageStack.top(); |
---|
| 2011 | linkageStack.pop(); |
---|
| 2012 | $$ = $5; |
---|
| 2013 | } |
---|
| 2014 | | EXTENSION external_definition |
---|
[8e9cbb2] | 2015 | { // mark all fields in list |
---|
[926af74] | 2016 | for ( DeclarationNode *iter = $2; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) |
---|
[8e9cbb2] | 2017 | iter->set_extension( true ); |
---|
| 2018 | $$ = $2; |
---|
| 2019 | } |
---|
[4d51835] | 2020 | ; |
---|
| 2021 | |
---|
| 2022 | external_function_definition: |
---|
| 2023 | function_definition |
---|
[de62360d] | 2024 | // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of |
---|
[c6b1105] | 2025 | // legacy code with global functions missing the type-specifier for the return type, and assuming "int". |
---|
| 2026 | // Parsing is possible because function_definition does not appear in the context of an expression (nested |
---|
| 2027 | // functions preclude this concession, i.e., all nested function must have a return type). A function prototype |
---|
| 2028 | // declaration must still have a type_specifier. OBSOLESCENT (see 1) |
---|
[4d51835] | 2029 | | function_declarator compound_statement |
---|
| 2030 | { |
---|
| 2031 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2032 | typedefTable.leaveScope(); |
---|
| 2033 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2034 | } |
---|
| 2035 | | old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2036 | { |
---|
| 2037 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2038 | typedefTable.leaveScope(); |
---|
| 2039 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
| 2040 | } |
---|
| 2041 | ; |
---|
[51b7345] | 2042 | |
---|
| 2043 | function_definition: |
---|
[4d51835] | 2044 | new_function_declaration compound_statement // CFA |
---|
| 2045 | { |
---|
| 2046 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2047 | typedefTable.leaveScope(); |
---|
| 2048 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2049 | } |
---|
| 2050 | | declaration_specifier function_declarator compound_statement |
---|
| 2051 | { |
---|
| 2052 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2053 | typedefTable.leaveScope(); |
---|
| 2054 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
| 2055 | } |
---|
| 2056 | | type_qualifier_list function_declarator compound_statement |
---|
| 2057 | { |
---|
| 2058 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2059 | typedefTable.leaveScope(); |
---|
| 2060 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2061 | } |
---|
| 2062 | | declaration_qualifier_list function_declarator compound_statement |
---|
| 2063 | { |
---|
| 2064 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2065 | typedefTable.leaveScope(); |
---|
| 2066 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2067 | } |
---|
| 2068 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
| 2069 | { |
---|
| 2070 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2071 | typedefTable.leaveScope(); |
---|
| 2072 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2073 | } |
---|
| 2074 | |
---|
| 2075 | // Old-style K&R function definition, OBSOLESCENT (see 4) |
---|
| 2076 | | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2077 | { |
---|
| 2078 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2079 | typedefTable.leaveScope(); |
---|
| 2080 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
| 2081 | } |
---|
| 2082 | | type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2083 | { |
---|
| 2084 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2085 | typedefTable.leaveScope(); |
---|
| 2086 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2087 | } |
---|
| 2088 | |
---|
| 2089 | // Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) |
---|
| 2090 | | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2091 | { |
---|
| 2092 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2093 | typedefTable.leaveScope(); |
---|
| 2094 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2095 | } |
---|
| 2096 | | declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2097 | { |
---|
| 2098 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2099 | typedefTable.leaveScope(); |
---|
| 2100 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2101 | } |
---|
| 2102 | ; |
---|
[51b7345] | 2103 | |
---|
| 2104 | declarator: |
---|
[4d51835] | 2105 | variable_declarator |
---|
[c6b1105] | 2106 | | variable_type_redeclarator |
---|
[4d51835] | 2107 | | function_declarator |
---|
| 2108 | ; |
---|
[51b7345] | 2109 | |
---|
| 2110 | subrange: |
---|
[4d51835] | 2111 | constant_expression '~' constant_expression // CFA, integer subrange |
---|
[d1625f8] | 2112 | { $$ = new ExpressionNode( build_range( $1, $3 ) ); } |
---|
[4d51835] | 2113 | ; |
---|
[b87a5ed] | 2114 | |
---|
| 2115 | asm_name_opt: // GCC |
---|
[4d51835] | 2116 | // empty |
---|
[c1c1112] | 2117 | | ASM '(' string_literal_list ')' attribute_list_opt { delete $3; } // FIX ME: unimplemented |
---|
[4d51835] | 2118 | ; |
---|
[b87a5ed] | 2119 | |
---|
| 2120 | attribute_list_opt: // GCC |
---|
[4d51835] | 2121 | // empty |
---|
[1db21619] | 2122 | { $$ = 0; } |
---|
[4d51835] | 2123 | | attribute_list |
---|
| 2124 | ; |
---|
[b87a5ed] | 2125 | |
---|
| 2126 | attribute_list: // GCC |
---|
[4d51835] | 2127 | attribute |
---|
| 2128 | | attribute_list attribute |
---|
[1db21619] | 2129 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 2130 | ; |
---|
[b87a5ed] | 2131 | |
---|
| 2132 | attribute: // GCC |
---|
[4d51835] | 2133 | ATTRIBUTE '(' '(' attribute_parameter_list ')' ')' |
---|
[1db21619] | 2134 | // { $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
| 2135 | { $$ = 0; } |
---|
[4d51835] | 2136 | ; |
---|
[b87a5ed] | 2137 | |
---|
| 2138 | attribute_parameter_list: // GCC |
---|
[4d51835] | 2139 | attrib |
---|
| 2140 | | attribute_parameter_list ',' attrib |
---|
| 2141 | ; |
---|
[b87a5ed] | 2142 | |
---|
| 2143 | attrib: // GCC |
---|
[4d51835] | 2144 | // empty |
---|
| 2145 | | any_word |
---|
[c1c1112] | 2146 | | any_word '(' comma_expression_opt ')' { delete $3; } // FIX ME: unimplemented |
---|
[4d51835] | 2147 | ; |
---|
[b87a5ed] | 2148 | |
---|
| 2149 | any_word: // GCC |
---|
[c1c1112] | 2150 | identifier_or_type_name { delete $1; } // FIX ME: unimplemented |
---|
| 2151 | | storage_class { delete $1; } // FIX ME: unimplemented |
---|
| 2152 | | basic_type_name { delete $1; } // FIX ME: unimplemented |
---|
| 2153 | | type_qualifier { delete $1; } // FIX ME: unimplemented |
---|
[4d51835] | 2154 | ; |
---|
[51b7345] | 2155 | |
---|
[c11e31c] | 2156 | // ============================================================================ |
---|
[de62360d] | 2157 | // The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary |
---|
| 2158 | // because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as |
---|
| 2159 | // in: |
---|
[c11e31c] | 2160 | // |
---|
[b87a5ed] | 2161 | // int (*f())[10] { ... }; |
---|
| 2162 | // ... (*f())[3] += 1; // definition mimics usage |
---|
[c11e31c] | 2163 | // |
---|
[de62360d] | 2164 | // Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of |
---|
| 2165 | // the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context. |
---|
[c11e31c] | 2166 | // ============================================================================ |
---|
| 2167 | |
---|
| 2168 | // ---------------------------------------------------------------------------- |
---|
[de62360d] | 2169 | // The set of valid declarators before a compound statement for defining a function is less than the set of declarators |
---|
| 2170 | // to define a variable or function prototype, e.g.: |
---|
[c11e31c] | 2171 | // |
---|
[b87a5ed] | 2172 | // valid declaration invalid definition |
---|
| 2173 | // ----------------- ------------------ |
---|
[4d51835] | 2174 | // int f; int f {} |
---|
| 2175 | // int *f; int *f {} |
---|
[b87a5ed] | 2176 | // int f[10]; int f[10] {} |
---|
[4d51835] | 2177 | // int (*f)(int); int (*f)(int) {} |
---|
[c11e31c] | 2178 | // |
---|
[de62360d] | 2179 | // To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence |
---|
| 2180 | // variable_declarator and function_declarator. |
---|
[c11e31c] | 2181 | // ---------------------------------------------------------------------------- |
---|
| 2182 | |
---|
[de62360d] | 2183 | // This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes |
---|
| 2184 | // declaring an array of functions versus a pointer to an array of functions. |
---|
[51b7345] | 2185 | |
---|
| 2186 | variable_declarator: |
---|
[4d51835] | 2187 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2188 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2189 | | variable_ptr |
---|
| 2190 | | variable_array attribute_list_opt |
---|
[1db21619] | 2191 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2192 | | variable_function attribute_list_opt |
---|
[1db21619] | 2193 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2194 | ; |
---|
[51b7345] | 2195 | |
---|
| 2196 | paren_identifier: |
---|
[4d51835] | 2197 | identifier |
---|
| 2198 | { |
---|
[de62360d] | 2199 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2200 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2201 | } |
---|
| 2202 | | '(' paren_identifier ')' // redundant parenthesis |
---|
| 2203 | { $$ = $2; } |
---|
| 2204 | ; |
---|
[51b7345] | 2205 | |
---|
| 2206 | variable_ptr: |
---|
[dd51906] | 2207 | ptrref_operator variable_declarator |
---|
[4d51835] | 2208 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2209 | | ptrref_operator type_qualifier_list variable_declarator |
---|
[4d51835] | 2210 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2211 | | '(' variable_ptr ')' |
---|
| 2212 | { $$ = $2; } |
---|
| 2213 | ; |
---|
[51b7345] | 2214 | |
---|
| 2215 | variable_array: |
---|
[4d51835] | 2216 | paren_identifier array_dimension |
---|
| 2217 | { $$ = $1->addArray( $2 ); } |
---|
| 2218 | | '(' variable_ptr ')' array_dimension |
---|
| 2219 | { $$ = $2->addArray( $4 ); } |
---|
| 2220 | | '(' variable_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2221 | { $$ = $2->addArray( $4 ); } |
---|
| 2222 | | '(' variable_array ')' // redundant parenthesis |
---|
| 2223 | { $$ = $2; } |
---|
| 2224 | ; |
---|
[51b7345] | 2225 | |
---|
| 2226 | variable_function: |
---|
[4d51835] | 2227 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2228 | { $$ = $2->addParamList( $6 ); } |
---|
| 2229 | | '(' variable_function ')' // redundant parenthesis |
---|
| 2230 | { $$ = $2; } |
---|
| 2231 | ; |
---|
[51b7345] | 2232 | |
---|
[c6b1105] | 2233 | // This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is |
---|
| 2234 | // no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist |
---|
| 2235 | // is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2236 | |
---|
| 2237 | function_declarator: |
---|
[4d51835] | 2238 | function_no_ptr attribute_list_opt |
---|
[1db21619] | 2239 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2240 | | function_ptr |
---|
| 2241 | | function_array attribute_list_opt |
---|
[1db21619] | 2242 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2243 | ; |
---|
[51b7345] | 2244 | |
---|
| 2245 | function_no_ptr: |
---|
[4d51835] | 2246 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2247 | { $$ = $1->addParamList( $4 ); } |
---|
| 2248 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2249 | { $$ = $2->addParamList( $6 ); } |
---|
| 2250 | | '(' function_no_ptr ')' // redundant parenthesis |
---|
| 2251 | { $$ = $2; } |
---|
| 2252 | ; |
---|
[51b7345] | 2253 | |
---|
| 2254 | function_ptr: |
---|
[dd51906] | 2255 | ptrref_operator function_declarator |
---|
[4d51835] | 2256 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2257 | | ptrref_operator type_qualifier_list function_declarator |
---|
[4d51835] | 2258 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2259 | | '(' function_ptr ')' |
---|
| 2260 | { $$ = $2; } |
---|
| 2261 | ; |
---|
[51b7345] | 2262 | |
---|
| 2263 | function_array: |
---|
[4d51835] | 2264 | '(' function_ptr ')' array_dimension |
---|
| 2265 | { $$ = $2->addArray( $4 ); } |
---|
| 2266 | | '(' function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2267 | { $$ = $2->addArray( $4 ); } |
---|
| 2268 | | '(' function_array ')' // redundant parenthesis |
---|
| 2269 | { $$ = $2; } |
---|
| 2270 | ; |
---|
[51b7345] | 2271 | |
---|
[de62360d] | 2272 | // This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a typedef name |
---|
| 2273 | // (see function_declarator for additional comments). The pattern precludes returning arrays and functions versus |
---|
| 2274 | // pointers to arrays and functions. |
---|
[51b7345] | 2275 | |
---|
| 2276 | old_function_declarator: |
---|
[4d51835] | 2277 | old_function_no_ptr |
---|
| 2278 | | old_function_ptr |
---|
| 2279 | | old_function_array |
---|
| 2280 | ; |
---|
[51b7345] | 2281 | |
---|
| 2282 | old_function_no_ptr: |
---|
[4d51835] | 2283 | paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter |
---|
| 2284 | { $$ = $1->addIdList( $3 ); } |
---|
| 2285 | | '(' old_function_ptr ')' '(' identifier_list ')' |
---|
| 2286 | { $$ = $2->addIdList( $5 ); } |
---|
| 2287 | | '(' old_function_no_ptr ')' // redundant parenthesis |
---|
| 2288 | { $$ = $2; } |
---|
| 2289 | ; |
---|
[51b7345] | 2290 | |
---|
| 2291 | old_function_ptr: |
---|
[dd51906] | 2292 | ptrref_operator old_function_declarator |
---|
[4d51835] | 2293 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2294 | | ptrref_operator type_qualifier_list old_function_declarator |
---|
[4d51835] | 2295 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2296 | | '(' old_function_ptr ')' |
---|
| 2297 | { $$ = $2; } |
---|
| 2298 | ; |
---|
[51b7345] | 2299 | |
---|
| 2300 | old_function_array: |
---|
[4d51835] | 2301 | '(' old_function_ptr ')' array_dimension |
---|
| 2302 | { $$ = $2->addArray( $4 ); } |
---|
| 2303 | | '(' old_function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2304 | { $$ = $2->addArray( $4 ); } |
---|
| 2305 | | '(' old_function_array ')' // redundant parenthesis |
---|
| 2306 | { $$ = $2; } |
---|
| 2307 | ; |
---|
[51b7345] | 2308 | |
---|
[2871210] | 2309 | // This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.: |
---|
[c11e31c] | 2310 | // |
---|
[b87a5ed] | 2311 | // typedef int foo; |
---|
| 2312 | // { |
---|
| 2313 | // int foo; // redefine typedef name in new scope |
---|
| 2314 | // } |
---|
[c11e31c] | 2315 | // |
---|
[de62360d] | 2316 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2317 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2318 | |
---|
[c6b1105] | 2319 | variable_type_redeclarator: |
---|
[2871210] | 2320 | paren_type attribute_list_opt |
---|
[1db21619] | 2321 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2322 | | type_ptr |
---|
| 2323 | | type_array attribute_list_opt |
---|
[1db21619] | 2324 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2325 | | type_function attribute_list_opt |
---|
[1db21619] | 2326 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2327 | ; |
---|
[51b7345] | 2328 | |
---|
[2871210] | 2329 | paren_type: |
---|
| 2330 | typedef |
---|
| 2331 | | '(' paren_type ')' |
---|
[4d51835] | 2332 | { $$ = $2; } |
---|
| 2333 | ; |
---|
[51b7345] | 2334 | |
---|
[2871210] | 2335 | type_ptr: |
---|
[c6b1105] | 2336 | ptrref_operator variable_type_redeclarator |
---|
[4d51835] | 2337 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c6b1105] | 2338 | | ptrref_operator type_qualifier_list variable_type_redeclarator |
---|
[4d51835] | 2339 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2340 | | '(' type_ptr ')' |
---|
[4d51835] | 2341 | { $$ = $2; } |
---|
| 2342 | ; |
---|
[51b7345] | 2343 | |
---|
[2871210] | 2344 | type_array: |
---|
| 2345 | paren_type array_dimension |
---|
[4d51835] | 2346 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2347 | | '(' type_ptr ')' array_dimension |
---|
[4d51835] | 2348 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2349 | | '(' type_array ')' multi_array_dimension // redundant parenthesis |
---|
[4d51835] | 2350 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2351 | | '(' type_array ')' // redundant parenthesis |
---|
[4d51835] | 2352 | { $$ = $2; } |
---|
| 2353 | ; |
---|
[51b7345] | 2354 | |
---|
[2871210] | 2355 | type_function: |
---|
| 2356 | paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2357 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2358 | | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2359 | { $$ = $2->addParamList( $6 ); } |
---|
[2871210] | 2360 | | '(' type_function ')' // redundant parenthesis |
---|
[4d51835] | 2361 | { $$ = $2; } |
---|
| 2362 | ; |
---|
[51b7345] | 2363 | |
---|
[de62360d] | 2364 | // This pattern parses a declaration for a parameter variable or function prototype that is not redefining a typedef |
---|
| 2365 | // name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes declaring an |
---|
| 2366 | // array of functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to |
---|
| 2367 | // arrays and functions. |
---|
[51b7345] | 2368 | |
---|
| 2369 | identifier_parameter_declarator: |
---|
[4d51835] | 2370 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2371 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2372 | | identifier_parameter_ptr |
---|
| 2373 | | identifier_parameter_array attribute_list_opt |
---|
[1db21619] | 2374 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2375 | | identifier_parameter_function attribute_list_opt |
---|
[1db21619] | 2376 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2377 | ; |
---|
[51b7345] | 2378 | |
---|
| 2379 | identifier_parameter_ptr: |
---|
[dd51906] | 2380 | ptrref_operator identifier_parameter_declarator |
---|
[4d51835] | 2381 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2382 | | ptrref_operator type_qualifier_list identifier_parameter_declarator |
---|
[4d51835] | 2383 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2384 | | '(' identifier_parameter_ptr ')' |
---|
| 2385 | { $$ = $2; } |
---|
| 2386 | ; |
---|
[51b7345] | 2387 | |
---|
| 2388 | identifier_parameter_array: |
---|
[4d51835] | 2389 | paren_identifier array_parameter_dimension |
---|
| 2390 | { $$ = $1->addArray( $2 ); } |
---|
| 2391 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
| 2392 | { $$ = $2->addArray( $4 ); } |
---|
| 2393 | | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2394 | { $$ = $2->addArray( $4 ); } |
---|
| 2395 | | '(' identifier_parameter_array ')' // redundant parenthesis |
---|
| 2396 | { $$ = $2; } |
---|
| 2397 | ; |
---|
[51b7345] | 2398 | |
---|
| 2399 | identifier_parameter_function: |
---|
[4d51835] | 2400 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2401 | { $$ = $1->addParamList( $4 ); } |
---|
| 2402 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2403 | { $$ = $2->addParamList( $6 ); } |
---|
| 2404 | | '(' identifier_parameter_function ')' // redundant parenthesis |
---|
| 2405 | { $$ = $2; } |
---|
| 2406 | ; |
---|
[b87a5ed] | 2407 | |
---|
[de62360d] | 2408 | // This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name, |
---|
| 2409 | // e.g.: |
---|
[c11e31c] | 2410 | // |
---|
[b87a5ed] | 2411 | // typedef int foo; |
---|
| 2412 | // int f( int foo ); // redefine typedef name in new scope |
---|
[c11e31c] | 2413 | // |
---|
[de62360d] | 2414 | // and allows the C99 array options, which can only appear in a parameter list. In addition, the pattern handles the |
---|
| 2415 | // special meaning of parenthesis around a typedef name: |
---|
[c11e31c] | 2416 | // |
---|
[b87a5ed] | 2417 | // ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
| 2418 | // parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
| 2419 | // not as redundant parentheses around the identifier." |
---|
[c11e31c] | 2420 | // |
---|
[c6b1105] | 2421 | // For example: |
---|
[c11e31c] | 2422 | // |
---|
[b87a5ed] | 2423 | // typedef float T; |
---|
[4d51835] | 2424 | // int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
[b87a5ed] | 2425 | // int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
| 2426 | // int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
| 2427 | // int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
[c11e31c] | 2428 | // |
---|
[de62360d] | 2429 | // In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and |
---|
| 2430 | // not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of |
---|
| 2431 | // functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and |
---|
| 2432 | // functions. |
---|
[51b7345] | 2433 | |
---|
[2871210] | 2434 | type_parameter_redeclarator: |
---|
[4d51835] | 2435 | typedef attribute_list_opt |
---|
[1db21619] | 2436 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2437 | | type_parameter_ptr |
---|
| 2438 | | type_parameter_array attribute_list_opt |
---|
[1db21619] | 2439 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2440 | | type_parameter_function attribute_list_opt |
---|
[1db21619] | 2441 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2442 | ; |
---|
[51b7345] | 2443 | |
---|
| 2444 | typedef: |
---|
[4d51835] | 2445 | TYPEDEFname |
---|
| 2446 | { |
---|
[de62360d] | 2447 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2448 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2449 | } |
---|
[2871210] | 2450 | | TYPEGENname |
---|
| 2451 | { |
---|
| 2452 | typedefTable.setNextIdentifier( *$1 ); |
---|
| 2453 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2454 | } |
---|
[4d51835] | 2455 | ; |
---|
[51b7345] | 2456 | |
---|
[2871210] | 2457 | type_parameter_ptr: |
---|
[dd51906] | 2458 | ptrref_operator type_parameter_redeclarator |
---|
[4d51835] | 2459 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2460 | | ptrref_operator type_qualifier_list type_parameter_redeclarator |
---|
[4d51835] | 2461 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2462 | | '(' type_parameter_ptr ')' |
---|
[4d51835] | 2463 | { $$ = $2; } |
---|
| 2464 | ; |
---|
[51b7345] | 2465 | |
---|
[2871210] | 2466 | type_parameter_array: |
---|
[4d51835] | 2467 | typedef array_parameter_dimension |
---|
| 2468 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2469 | | '(' type_parameter_ptr ')' array_parameter_dimension |
---|
[4d51835] | 2470 | { $$ = $2->addArray( $4 ); } |
---|
| 2471 | ; |
---|
[51b7345] | 2472 | |
---|
[2871210] | 2473 | type_parameter_function: |
---|
[4d51835] | 2474 | typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2475 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2476 | | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2477 | { $$ = $2->addParamList( $6 ); } |
---|
| 2478 | ; |
---|
[b87a5ed] | 2479 | |
---|
[de62360d] | 2480 | // This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to |
---|
| 2481 | // which the type applies, e.g.: |
---|
[c11e31c] | 2482 | // |
---|
[b87a5ed] | 2483 | // sizeof( int ); |
---|
| 2484 | // sizeof( int [10] ); |
---|
[c11e31c] | 2485 | // |
---|
[de62360d] | 2486 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2487 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2488 | |
---|
| 2489 | abstract_declarator: |
---|
[4d51835] | 2490 | abstract_ptr |
---|
| 2491 | | abstract_array attribute_list_opt |
---|
[1db21619] | 2492 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2493 | | abstract_function attribute_list_opt |
---|
[1db21619] | 2494 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2495 | ; |
---|
[51b7345] | 2496 | |
---|
| 2497 | abstract_ptr: |
---|
[dd51906] | 2498 | ptrref_operator |
---|
[4d51835] | 2499 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2500 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2501 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2502 | | ptrref_operator abstract_declarator |
---|
[4d51835] | 2503 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2504 | | ptrref_operator type_qualifier_list abstract_declarator |
---|
[4d51835] | 2505 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2506 | | '(' abstract_ptr ')' |
---|
| 2507 | { $$ = $2; } |
---|
| 2508 | ; |
---|
[51b7345] | 2509 | |
---|
| 2510 | abstract_array: |
---|
[4d51835] | 2511 | array_dimension |
---|
| 2512 | | '(' abstract_ptr ')' array_dimension |
---|
| 2513 | { $$ = $2->addArray( $4 ); } |
---|
| 2514 | | '(' abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2515 | { $$ = $2->addArray( $4 ); } |
---|
| 2516 | | '(' abstract_array ')' // redundant parenthesis |
---|
| 2517 | { $$ = $2; } |
---|
| 2518 | ; |
---|
[51b7345] | 2519 | |
---|
| 2520 | abstract_function: |
---|
[4d51835] | 2521 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2522 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2523 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2524 | { $$ = $2->addParamList( $6 ); } |
---|
| 2525 | | '(' abstract_function ')' // redundant parenthesis |
---|
| 2526 | { $$ = $2; } |
---|
| 2527 | ; |
---|
[51b7345] | 2528 | |
---|
| 2529 | array_dimension: |
---|
[4d51835] | 2530 | // Only the first dimension can be empty. |
---|
[2871210] | 2531 | '[' ']' |
---|
[4d51835] | 2532 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
[2871210] | 2533 | | '[' ']' multi_array_dimension |
---|
| 2534 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); } |
---|
[4d51835] | 2535 | | multi_array_dimension |
---|
| 2536 | ; |
---|
[51b7345] | 2537 | |
---|
| 2538 | multi_array_dimension: |
---|
[4d51835] | 2539 | '[' push assignment_expression pop ']' |
---|
| 2540 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
| 2541 | | '[' push '*' pop ']' // C99 |
---|
| 2542 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
| 2543 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
| 2544 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
| 2545 | | multi_array_dimension '[' push '*' pop ']' // C99 |
---|
| 2546 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
| 2547 | ; |
---|
[51b7345] | 2548 | |
---|
[c11e31c] | 2549 | // This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
| 2550 | // identifier to which the type applies, e.g.: |
---|
| 2551 | // |
---|
[b87a5ed] | 2552 | // int f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2553 | // int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2554 | // |
---|
[de62360d] | 2555 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2556 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2557 | |
---|
| 2558 | abstract_parameter_declarator: |
---|
[4d51835] | 2559 | abstract_parameter_ptr |
---|
| 2560 | | abstract_parameter_array attribute_list_opt |
---|
[1db21619] | 2561 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2562 | | abstract_parameter_function attribute_list_opt |
---|
[1db21619] | 2563 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2564 | ; |
---|
[51b7345] | 2565 | |
---|
| 2566 | abstract_parameter_ptr: |
---|
[dd51906] | 2567 | ptrref_operator |
---|
[4d51835] | 2568 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2569 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2570 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2571 | | ptrref_operator abstract_parameter_declarator |
---|
[4d51835] | 2572 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2573 | | ptrref_operator type_qualifier_list abstract_parameter_declarator |
---|
[4d51835] | 2574 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2575 | | '(' abstract_parameter_ptr ')' |
---|
| 2576 | { $$ = $2; } |
---|
| 2577 | ; |
---|
[51b7345] | 2578 | |
---|
| 2579 | abstract_parameter_array: |
---|
[4d51835] | 2580 | array_parameter_dimension |
---|
| 2581 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
| 2582 | { $$ = $2->addArray( $4 ); } |
---|
| 2583 | | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2584 | { $$ = $2->addArray( $4 ); } |
---|
| 2585 | | '(' abstract_parameter_array ')' // redundant parenthesis |
---|
| 2586 | { $$ = $2; } |
---|
| 2587 | ; |
---|
[51b7345] | 2588 | |
---|
| 2589 | abstract_parameter_function: |
---|
[4d51835] | 2590 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2591 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2592 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2593 | { $$ = $2->addParamList( $6 ); } |
---|
| 2594 | | '(' abstract_parameter_function ')' // redundant parenthesis |
---|
| 2595 | { $$ = $2; } |
---|
| 2596 | ; |
---|
[51b7345] | 2597 | |
---|
| 2598 | array_parameter_dimension: |
---|
[4d51835] | 2599 | // Only the first dimension can be empty or have qualifiers. |
---|
| 2600 | array_parameter_1st_dimension |
---|
| 2601 | | array_parameter_1st_dimension multi_array_dimension |
---|
| 2602 | { $$ = $1->addArray( $2 ); } |
---|
| 2603 | | multi_array_dimension |
---|
| 2604 | ; |
---|
[51b7345] | 2605 | |
---|
[c11e31c] | 2606 | // The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
| 2607 | // |
---|
[de62360d] | 2608 | // ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in |
---|
| 2609 | // a declaration of a function parameter with an array type, and then only in the outermost array type derivation." |
---|
[51b7345] | 2610 | |
---|
| 2611 | array_parameter_1st_dimension: |
---|
[2871210] | 2612 | '[' ']' |
---|
[4d51835] | 2613 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
| 2614 | // multi_array_dimension handles the '[' '*' ']' case |
---|
| 2615 | | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2616 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2617 | | '[' push type_qualifier_list pop ']' |
---|
| 2618 | { $$ = DeclarationNode::newArray( 0, $3, false ); } |
---|
| 2619 | // multi_array_dimension handles the '[' assignment_expression ']' case |
---|
| 2620 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2621 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2622 | | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']' |
---|
| 2623 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
| 2624 | | '[' push type_qualifier_list STATIC assignment_expression pop ']' |
---|
| 2625 | { $$ = DeclarationNode::newArray( $5, $3, true ); } |
---|
| 2626 | ; |
---|
[b87a5ed] | 2627 | |
---|
[de62360d] | 2628 | // This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type applies, |
---|
| 2629 | // e.g.: |
---|
[c11e31c] | 2630 | // |
---|
[b87a5ed] | 2631 | // sizeof( int ); // abstract variable; no identifier name specified |
---|
[c11e31c] | 2632 | // |
---|
[de62360d] | 2633 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2634 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2635 | |
---|
| 2636 | variable_abstract_declarator: |
---|
[4d51835] | 2637 | variable_abstract_ptr |
---|
| 2638 | | variable_abstract_array attribute_list_opt |
---|
[1db21619] | 2639 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2640 | | variable_abstract_function attribute_list_opt |
---|
[1db21619] | 2641 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2642 | ; |
---|
[51b7345] | 2643 | |
---|
| 2644 | variable_abstract_ptr: |
---|
[dd51906] | 2645 | ptrref_operator |
---|
[4d51835] | 2646 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2647 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2648 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2649 | | ptrref_operator variable_abstract_declarator |
---|
[4d51835] | 2650 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2651 | | ptrref_operator type_qualifier_list variable_abstract_declarator |
---|
[4d51835] | 2652 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2653 | | '(' variable_abstract_ptr ')' |
---|
| 2654 | { $$ = $2; } |
---|
| 2655 | ; |
---|
[51b7345] | 2656 | |
---|
| 2657 | variable_abstract_array: |
---|
[4d51835] | 2658 | array_dimension |
---|
| 2659 | | '(' variable_abstract_ptr ')' array_dimension |
---|
| 2660 | { $$ = $2->addArray( $4 ); } |
---|
| 2661 | | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2662 | { $$ = $2->addArray( $4 ); } |
---|
| 2663 | | '(' variable_abstract_array ')' // redundant parenthesis |
---|
| 2664 | { $$ = $2; } |
---|
| 2665 | ; |
---|
[51b7345] | 2666 | |
---|
| 2667 | variable_abstract_function: |
---|
[4d51835] | 2668 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2669 | { $$ = $2->addParamList( $6 ); } |
---|
| 2670 | | '(' variable_abstract_function ')' // redundant parenthesis |
---|
| 2671 | { $$ = $2; } |
---|
| 2672 | ; |
---|
[b87a5ed] | 2673 | |
---|
[de62360d] | 2674 | // This pattern parses a new-style declaration for a parameter variable or function prototype that is either an |
---|
| 2675 | // identifier or typedef name and allows the C99 array options, which can only appear in a parameter list. |
---|
[b87a5ed] | 2676 | |
---|
| 2677 | new_identifier_parameter_declarator_tuple: // CFA |
---|
[4d51835] | 2678 | new_identifier_parameter_declarator_no_tuple |
---|
| 2679 | | new_abstract_tuple |
---|
| 2680 | | type_qualifier_list new_abstract_tuple |
---|
| 2681 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2682 | ; |
---|
[b87a5ed] | 2683 | |
---|
| 2684 | new_identifier_parameter_declarator_no_tuple: // CFA |
---|
[4d51835] | 2685 | new_identifier_parameter_ptr |
---|
| 2686 | | new_identifier_parameter_array |
---|
| 2687 | ; |
---|
[b87a5ed] | 2688 | |
---|
| 2689 | new_identifier_parameter_ptr: // CFA |
---|
[dd51906] | 2690 | ptrref_operator type_specifier |
---|
[4d51835] | 2691 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2692 | | type_qualifier_list ptrref_operator type_specifier |
---|
[4d51835] | 2693 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2694 | | ptrref_operator new_abstract_function |
---|
[4d51835] | 2695 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2696 | | type_qualifier_list ptrref_operator new_abstract_function |
---|
[4d51835] | 2697 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2698 | | ptrref_operator new_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2699 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2700 | | type_qualifier_list ptrref_operator new_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2701 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2702 | ; |
---|
[b87a5ed] | 2703 | |
---|
| 2704 | new_identifier_parameter_array: // CFA |
---|
[de62360d] | 2705 | // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to |
---|
| 2706 | // shift/reduce conflict with new-style empty (void) function return type. |
---|
[2871210] | 2707 | '[' ']' type_specifier |
---|
| 2708 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2709 | | new_array_parameter_1st_dimension type_specifier |
---|
| 2710 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2711 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2712 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2713 | | new_array_parameter_1st_dimension multi_array_dimension type_specifier |
---|
| 2714 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2715 | | multi_array_dimension type_specifier |
---|
| 2716 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2717 | | '[' ']' new_identifier_parameter_ptr |
---|
| 2718 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2719 | | new_array_parameter_1st_dimension new_identifier_parameter_ptr |
---|
| 2720 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2721 | | '[' ']' multi_array_dimension new_identifier_parameter_ptr |
---|
| 2722 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2723 | | new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr |
---|
| 2724 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2725 | | multi_array_dimension new_identifier_parameter_ptr |
---|
| 2726 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2727 | ; |
---|
[51b7345] | 2728 | |
---|
| 2729 | new_array_parameter_1st_dimension: |
---|
[4d51835] | 2730 | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2731 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2732 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2733 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2734 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
| 2735 | // declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
| 2736 | // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot |
---|
| 2737 | // appear in this context. |
---|
| 2738 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
| 2739 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
| 2740 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
| 2741 | ; |
---|
[b87a5ed] | 2742 | |
---|
[de62360d] | 2743 | // This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no |
---|
| 2744 | // identifier to which the type applies, e.g.: |
---|
[c11e31c] | 2745 | // |
---|
[b87a5ed] | 2746 | // [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2747 | // [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2748 | // |
---|
| 2749 | // These rules need LR(3): |
---|
| 2750 | // |
---|
[2871210] | 2751 | // new_abstract_tuple identifier_or_type_name |
---|
| 2752 | // '[' new_parameter_list ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[c11e31c] | 2753 | // |
---|
| 2754 | // since a function return type can be syntactically identical to a tuple type: |
---|
| 2755 | // |
---|
[b87a5ed] | 2756 | // [int, int] t; |
---|
| 2757 | // [int, int] f( int ); |
---|
[c11e31c] | 2758 | // |
---|
[2871210] | 2759 | // Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce |
---|
[de62360d] | 2760 | // new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary |
---|
| 2761 | // lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and tuple declarations are |
---|
| 2762 | // duplicated when appearing with new_function_specifier. |
---|
[b87a5ed] | 2763 | |
---|
| 2764 | new_abstract_declarator_tuple: // CFA |
---|
[4d51835] | 2765 | new_abstract_tuple |
---|
| 2766 | | type_qualifier_list new_abstract_tuple |
---|
| 2767 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2768 | | new_abstract_declarator_no_tuple |
---|
| 2769 | ; |
---|
[b87a5ed] | 2770 | |
---|
| 2771 | new_abstract_declarator_no_tuple: // CFA |
---|
[4d51835] | 2772 | new_abstract_ptr |
---|
| 2773 | | new_abstract_array |
---|
| 2774 | ; |
---|
[b87a5ed] | 2775 | |
---|
| 2776 | new_abstract_ptr: // CFA |
---|
[dd51906] | 2777 | ptrref_operator type_specifier |
---|
[4d51835] | 2778 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2779 | | type_qualifier_list ptrref_operator type_specifier |
---|
[4d51835] | 2780 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2781 | | ptrref_operator new_abstract_function |
---|
[4d51835] | 2782 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2783 | | type_qualifier_list ptrref_operator new_abstract_function |
---|
[4d51835] | 2784 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2785 | | ptrref_operator new_abstract_declarator_tuple |
---|
[4d51835] | 2786 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2787 | | type_qualifier_list ptrref_operator new_abstract_declarator_tuple |
---|
[4d51835] | 2788 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2789 | ; |
---|
[b87a5ed] | 2790 | |
---|
| 2791 | new_abstract_array: // CFA |
---|
[de62360d] | 2792 | // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with |
---|
| 2793 | // empty (void) function return type. |
---|
[2871210] | 2794 | '[' ']' type_specifier |
---|
| 2795 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2796 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2797 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2798 | | multi_array_dimension type_specifier |
---|
| 2799 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2800 | | '[' ']' new_abstract_ptr |
---|
| 2801 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2802 | | '[' ']' multi_array_dimension new_abstract_ptr |
---|
| 2803 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2804 | | multi_array_dimension new_abstract_ptr |
---|
| 2805 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2806 | ; |
---|
[b87a5ed] | 2807 | |
---|
| 2808 | new_abstract_tuple: // CFA |
---|
[4d51835] | 2809 | '[' push new_abstract_parameter_list pop ']' |
---|
| 2810 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 2811 | ; |
---|
[b87a5ed] | 2812 | |
---|
| 2813 | new_abstract_function: // CFA |
---|
[2871210] | 2814 | '[' ']' '(' new_parameter_type_list_opt ')' |
---|
| 2815 | { $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $4, 0 ); } |
---|
[4d51835] | 2816 | | new_abstract_tuple '(' push new_parameter_type_list_opt pop ')' |
---|
| 2817 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2818 | | new_function_return '(' push new_parameter_type_list_opt pop ')' |
---|
| 2819 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2820 | ; |
---|
[b87a5ed] | 2821 | |
---|
[de62360d] | 2822 | // 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in |
---|
| 2823 | // each declaration, and in the specifier-qualifier list in each structure declaration and type name." |
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[c11e31c] | 2824 | // |
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[de62360d] | 2825 | // 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of |
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| 2826 | // the declaration specifiers in a declaration is an obsolescent feature." |
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[c11e31c] | 2827 | // |
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| 2828 | // 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
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| 2829 | // prototype-format parameter type declarators) is an obsolescent feature." |
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| 2830 | // |
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[de62360d] | 2831 | // 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and |
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| 2832 | // declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature. |
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[51b7345] | 2833 | |
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[c11e31c] | 2834 | //************************* MISCELLANEOUS ******************************** |
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[51b7345] | 2835 | |
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[b87a5ed] | 2836 | comma_opt: // redundant comma |
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[4d51835] | 2837 | // empty |
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| 2838 | | ',' |
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| 2839 | ; |
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[51b7345] | 2840 | |
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| 2841 | assignment_opt: |
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[4d51835] | 2842 | // empty |
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| 2843 | { $$ = 0; } |
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| 2844 | | '=' assignment_expression |
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| 2845 | { $$ = $2; } |
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| 2846 | ; |
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[51b7345] | 2847 | |
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| 2848 | %% |
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[c11e31c] | 2849 | // ----end of grammar---- |
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[51b7345] | 2850 | |
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[0da3e2c] | 2851 | extern char *yytext; |
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| 2852 | |
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[5f2f2d7] | 2853 | void yyerror( const char * ) { |
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| 2854 | std::cout << "Error "; |
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[b87a5ed] | 2855 | if ( yyfilename ) { |
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[45161b4d] | 2856 | std::cout << "in file " << yyfilename << " "; |
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[5f2f2d7] | 2857 | } // if |
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[b1d6dd5] | 2858 | std::cout << "at line " << yylineno << " reading token \"" << (yytext[0] == '\0' ? "EOF" : yytext) << "\"" << std::endl; |
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[51b7345] | 2859 | } |
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| 2860 | |
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[c11e31c] | 2861 | // Local Variables: // |
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[b87a5ed] | 2862 | // mode: c++ // |
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[de62360d] | 2863 | // tab-width: 4 // |
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[c11e31c] | 2864 | // compile-command: "make install" // |
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| 2865 | // End: // |
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