[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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[c6b1105] | 12 | // Last Modified On : Mon Jun 27 17:47:56 2016 |
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| 13 | // Update Count : 1627 |
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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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[8a95629] | 45 | extern char *yytext; |
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[51b7345] | 46 | |
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| 47 | #undef __GNUC_MINOR__ |
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| 48 | |
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| 49 | #include <cstdio> |
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| 50 | #include <stack> |
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| 51 | #include "lex.h" |
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[984dce6] | 52 | #include "parser.h" |
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[51b7345] | 53 | #include "ParseNode.h" |
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[984dce6] | 54 | #include "TypedefTable.h" |
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[1db21619] | 55 | #include "TypeData.h" |
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[51b7345] | 56 | #include "LinkageSpec.h" |
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| 57 | |
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[b87a5ed] | 58 | DeclarationNode *theTree = 0; // the resulting parse tree |
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[51b7345] | 59 | LinkageSpec::Type linkage = LinkageSpec::Cforall; |
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| 60 | std::stack< LinkageSpec::Type > linkageStack; |
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| 61 | TypedefTable typedefTable; |
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| 62 | %} |
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| 63 | |
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[c11e31c] | 64 | //************************* TERMINAL TOKENS ******************************** |
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[51b7345] | 65 | |
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[c11e31c] | 66 | // keywords |
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[51b7345] | 67 | %token TYPEDEF |
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| 68 | %token AUTO EXTERN REGISTER STATIC |
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[b87a5ed] | 69 | %token INLINE // C99 |
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| 70 | %token FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1) |
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[51b7345] | 71 | %token CONST VOLATILE |
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[b87a5ed] | 72 | %token RESTRICT // C99 |
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| 73 | %token FORALL LVALUE // CFA |
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[51b7345] | 74 | %token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED |
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[90c3b1c] | 75 | %token VALIST // GCC |
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[b87a5ed] | 76 | %token BOOL COMPLEX IMAGINARY // C99 |
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| 77 | %token TYPEOF LABEL // GCC |
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[51b7345] | 78 | %token ENUM STRUCT UNION |
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[e7aed49] | 79 | %token OTYPE FTYPE DTYPE TRAIT // CFA |
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[5721a6d] | 80 | %token SIZEOF OFFSETOF |
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[b87a5ed] | 81 | %token ATTRIBUTE EXTENSION // GCC |
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[51b7345] | 82 | %token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN |
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[02e5ab6] | 83 | %token CHOOSE DISABLE ENABLE FALLTHRU TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT // CFA |
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[b87a5ed] | 84 | %token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1) |
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[c11e31c] | 85 | %token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL // C11 |
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[51b7345] | 86 | |
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[c11e31c] | 87 | // names and constants: lexer differentiates between identifier and typedef names |
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[b87a5ed] | 88 | %token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname |
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| 89 | %token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname |
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| 90 | %token<tok> INTEGERconstant FLOATINGconstant CHARACTERconstant STRINGliteral |
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| 91 | %token<tok> ZERO ONE // CFA |
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[51b7345] | 92 | |
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[c11e31c] | 93 | // multi-character operators |
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[b87a5ed] | 94 | %token ARROW // -> |
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| 95 | %token ICR DECR // ++ -- |
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| 96 | %token LS RS // << >> |
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| 97 | %token LE GE EQ NE // <= >= == != |
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| 98 | %token ANDAND OROR // && || |
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| 99 | %token ELLIPSIS // ... |
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| 100 | |
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| 101 | %token MULTassign DIVassign MODassign // *= /= %=/ |
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| 102 | %token PLUSassign MINUSassign // += -= |
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| 103 | %token LSassign RSassign // <<= >>= |
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| 104 | %token ANDassign ERassign ORassign // &= ^= |= |
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[51b7345] | 105 | |
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[e7aed49] | 106 | %token ATassign // @= |
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[097e2b0] | 107 | |
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[c11e31c] | 108 | // Types declaration |
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[51b7345] | 109 | %union |
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| 110 | { |
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[b87a5ed] | 111 | Token tok; |
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| 112 | ParseNode *pn; |
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| 113 | ExpressionNode *en; |
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| 114 | DeclarationNode *decl; |
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[68cd1ce] | 115 | DeclarationNode::Aggregate aggKey; |
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[b87a5ed] | 116 | DeclarationNode::TypeClass tclass; |
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| 117 | StatementNode *sn; |
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| 118 | ConstantNode *constant; |
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[7f5566b] | 119 | LabelNode *label; |
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[b87a5ed] | 120 | InitializerNode *in; |
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[7f5566b] | 121 | bool flag; |
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[51b7345] | 122 | } |
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| 123 | |
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[097e2b0] | 124 | %type<tok> identifier no_01_identifier no_attr_identifier zero_one |
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[2871210] | 125 | %type<tok> identifier_or_type_name no_attr_identifier_or_type_name no_01_identifier_or_type_name |
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[51b7345] | 126 | %type<constant> string_literal_list |
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| 127 | |
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[c11e31c] | 128 | // expressions |
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[51b7345] | 129 | %type<constant> constant |
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[b87a5ed] | 130 | %type<en> tuple tuple_expression_list |
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[dd51906] | 131 | %type<en> ptrref_operator unary_operator assignment_operator |
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[b87a5ed] | 132 | %type<en> primary_expression postfix_expression unary_expression |
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| 133 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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| 134 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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| 135 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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| 136 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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| 137 | %type<en> comma_expression comma_expression_opt |
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| 138 | %type<en> argument_expression_list argument_expression for_control_expression assignment_opt |
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[51b7345] | 139 | %type<en> subrange |
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[7f5566b] | 140 | %type<en> asm_operands_opt asm_operands_list asm_operand |
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| 141 | %type<label> label_list |
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| 142 | %type<constant> asm_clobbers_list_opt |
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| 143 | %type<flag> asm_volatile_opt |
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[51b7345] | 144 | |
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[c11e31c] | 145 | // statements |
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[b87a5ed] | 146 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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[097e2b0] | 147 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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[b87a5ed] | 148 | %type<sn> fall_through_opt fall_through |
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| 149 | %type<sn> statement statement_list |
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| 150 | %type<sn> block_item_list block_item |
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[51b7345] | 151 | %type<sn> case_clause |
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[b87a5ed] | 152 | %type<en> case_value case_value_list |
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| 153 | %type<sn> case_label case_label_list |
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| 154 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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| 155 | %type<pn> handler_list handler_clause finally_clause |
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[51b7345] | 156 | |
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[c11e31c] | 157 | // declarations |
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[51b7345] | 158 | %type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array |
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| 159 | %type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function |
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| 160 | %type<decl> abstract_parameter_ptr abstract_ptr |
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| 161 | |
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| 162 | %type<aggKey> aggregate_key |
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| 163 | %type<decl> aggregate_name |
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| 164 | |
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| 165 | %type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension |
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| 166 | |
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| 167 | %type<decl> assertion assertion_list_opt |
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| 168 | |
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| 169 | %type<en> bit_subrange_size_opt bit_subrange_size |
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| 170 | |
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| 171 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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| 172 | |
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[4040425] | 173 | %type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier |
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[51b7345] | 174 | |
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| 175 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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| 176 | %type<decl> declaration_specifier declarator declaring_list |
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| 177 | |
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| 178 | %type<decl> elaborated_type_name |
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| 179 | |
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| 180 | %type<decl> enumerator_list enum_name |
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| 181 | %type<en> enumerator_value_opt |
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| 182 | |
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| 183 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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| 184 | |
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| 185 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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| 186 | %type<en> field field_list |
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| 187 | |
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[4d51835] | 188 | %type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr |
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[51b7345] | 189 | |
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| 190 | %type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function |
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| 191 | %type<decl> identifier_parameter_ptr identifier_list |
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| 192 | |
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| 193 | %type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple |
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| 194 | %type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list |
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| 195 | %type<decl> new_abstract_ptr new_abstract_tuple |
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| 196 | |
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| 197 | %type<decl> new_array_parameter_1st_dimension |
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| 198 | |
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[4040425] | 199 | %type<decl> new_trait_declaring_list new_declaration new_field_declaring_list |
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[51b7345] | 200 | %type<decl> new_function_declaration new_function_return new_function_specifier |
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| 201 | |
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| 202 | %type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple |
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| 203 | %type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr |
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| 204 | |
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| 205 | %type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt |
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| 206 | |
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| 207 | %type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier |
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| 208 | |
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| 209 | %type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array |
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| 210 | %type<decl> old_function_declarator old_function_no_ptr old_function_ptr |
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| 211 | |
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| 212 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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| 213 | %type<decl> parameter_type_list_opt |
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| 214 | |
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[2871210] | 215 | %type<decl> paren_identifier paren_type |
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[51b7345] | 216 | |
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| 217 | %type<decl> storage_class storage_class_name storage_class_list |
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| 218 | |
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| 219 | %type<decl> sue_declaration_specifier sue_type_specifier |
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| 220 | |
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| 221 | %type<tclass> type_class |
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| 222 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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| 223 | |
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[2871210] | 224 | %type<decl> typedef type_array typedef_declaration typedef_declaration_specifier typedef_expression |
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| 225 | %type<decl> type_function type_parameter_array type_parameter_function type_parameter_ptr |
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[c6b1105] | 226 | %type<decl> type_parameter_redeclarator type_ptr variable_type_redeclarator typedef_type_specifier |
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[2871210] | 227 | %type<decl> typegen_declaration_specifier typegen_type_specifier typegen_name |
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[51b7345] | 228 | |
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| 229 | %type<decl> type_name type_name_no_function |
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| 230 | %type<decl> type_parameter type_parameter_list |
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| 231 | |
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| 232 | %type<en> type_name_list |
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| 233 | |
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| 234 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier |
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| 235 | |
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| 236 | %type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function |
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| 237 | %type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr |
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| 238 | |
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[1db21619] | 239 | %type<decl> attribute_list_opt attribute_list attribute |
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| 240 | |
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[c11e31c] | 241 | // initializers |
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[51b7345] | 242 | %type<in> initializer initializer_list initializer_opt |
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| 243 | |
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[c11e31c] | 244 | // designators |
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[51b7345] | 245 | %type<en> designator designator_list designation |
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| 246 | |
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| 247 | |
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[b87a5ed] | 248 | // Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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| 249 | // is ambiguous: |
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| 250 | // .---------. matches IF '(' comma_expression ')' statement |
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[c11e31c] | 251 | // if ( C ) S1 else S2 |
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[b87a5ed] | 252 | // `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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[51b7345] | 253 | |
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[c11e31c] | 254 | %nonassoc THEN // rule precedence for IF '(' comma_expression ')' statement |
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| 255 | %nonassoc ELSE // token precedence for start of else clause in IF statement |
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[51b7345] | 256 | |
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[b87a5ed] | 257 | %start translation_unit // parse-tree root |
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[51b7345] | 258 | |
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| 259 | %% |
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[c11e31c] | 260 | //************************* Namespace Management ******************************** |
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| 261 | |
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[de62360d] | 262 | // The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols |
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| 263 | // "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free |
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| 264 | // grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this |
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| 265 | // grammar uses the ANSI style. |
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[c11e31c] | 266 | // |
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[de62360d] | 267 | // Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those |
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| 268 | // introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. This latter |
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| 269 | // type name creates a third class of identifiers that must be distinguished by the scanner. |
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[c11e31c] | 270 | // |
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[de62360d] | 271 | // Since the scanner cannot distinguish among the different classes of identifiers without some context information, it |
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| 272 | // accesses a data structure (the TypedefTable) to allow classification of an identifier that it has just read. |
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| 273 | // Semantic actions during the parser update this data structure when the class of identifiers change. |
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[c11e31c] | 274 | // |
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[de62360d] | 275 | // Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a |
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| 276 | // 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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| 277 | // particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are |
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| 278 | // 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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| 279 | // "typedef" or "type" declarations). |
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[c11e31c] | 280 | // |
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[de62360d] | 281 | // 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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| 282 | // scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur |
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| 283 | // within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point |
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| 284 | // of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have |
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| 285 | // enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra |
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| 286 | // 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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| 287 | // "push" and "pop" nonterminals to resolve conflicts of this sort. |
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[51b7345] | 288 | |
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| 289 | push: |
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[4d51835] | 290 | { |
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| 291 | typedefTable.enterScope(); |
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| 292 | } |
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| 293 | ; |
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[51b7345] | 294 | |
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| 295 | pop: |
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[4d51835] | 296 | { |
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| 297 | typedefTable.leaveScope(); |
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| 298 | } |
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| 299 | ; |
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[51b7345] | 300 | |
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[c11e31c] | 301 | //************************* CONSTANTS ******************************** |
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[51b7345] | 302 | |
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| 303 | constant: |
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[de62360d] | 304 | // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant". |
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[59db689] | 305 | INTEGERconstant { $$ = new ConstantNode( ConstantNode::Integer, $1 ); } |
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| 306 | | FLOATINGconstant { $$ = new ConstantNode( ConstantNode::Float, $1 ); } |
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| 307 | | CHARACTERconstant { $$ = new ConstantNode( ConstantNode::Character, $1 ); } |
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[4d51835] | 308 | ; |
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[51b7345] | 309 | |
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| 310 | identifier: |
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[4d51835] | 311 | IDENTIFIER |
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| 312 | | ATTR_IDENTIFIER // CFA |
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| 313 | | zero_one // CFA |
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| 314 | ; |
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[51b7345] | 315 | |
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| 316 | no_01_identifier: |
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[4d51835] | 317 | IDENTIFIER |
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| 318 | | ATTR_IDENTIFIER // CFA |
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| 319 | ; |
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[51b7345] | 320 | |
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| 321 | no_attr_identifier: |
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[4d51835] | 322 | IDENTIFIER |
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[bd85400] | 323 | | zero_one // CFA |
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[4d51835] | 324 | ; |
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[51b7345] | 325 | |
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[b87a5ed] | 326 | zero_one: // CFA |
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[4d51835] | 327 | ZERO |
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| 328 | | ONE |
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| 329 | ; |
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[51b7345] | 330 | |
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[b87a5ed] | 331 | string_literal_list: // juxtaposed strings are concatenated |
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[59db689] | 332 | STRINGliteral { $$ = new ConstantNode( ConstantNode::String, $1 ); } |
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| 333 | | string_literal_list STRINGliteral { $$ = $1->appendstr( $2 ); } |
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[4d51835] | 334 | ; |
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[51b7345] | 335 | |
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[c11e31c] | 336 | //************************* EXPRESSIONS ******************************** |
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[51b7345] | 337 | |
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| 338 | primary_expression: |
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[4d51835] | 339 | IDENTIFIER // typedef name cannot be used as a variable name |
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[de62360d] | 340 | { $$ = new VarRefNode( $1 ); } |
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[4d51835] | 341 | | zero_one |
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[de62360d] | 342 | { $$ = new VarRefNode( $1 ); } |
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[4d51835] | 343 | | '(' comma_expression ')' |
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| 344 | { $$ = $2; } |
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| 345 | | '(' compound_statement ')' // GCC, lambda expression |
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[de62360d] | 346 | { $$ = new ValofExprNode( $2 ); } |
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[4d51835] | 347 | ; |
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[51b7345] | 348 | |
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| 349 | postfix_expression: |
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[4d51835] | 350 | primary_expression |
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| 351 | | postfix_expression '[' push assignment_expression pop ']' |
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[c6b1105] | 352 | // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a |
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[de62360d] | 353 | // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be |
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| 354 | // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is |
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| 355 | // equivalent to the old x[i,j]. |
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| 356 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Index ), $1, $4 ); } |
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[4d51835] | 357 | | postfix_expression '(' argument_expression_list ')' |
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[de62360d] | 358 | { $$ = new CompositeExprNode( $1, $3 ); } |
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[bd85400] | 359 | // ambiguity with .0 so space required after field-selection, e.g. |
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| 360 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
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[4d51835] | 361 | | postfix_expression '.' no_attr_identifier |
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[de62360d] | 362 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), $1, new VarRefNode( $3 )); } |
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[4d51835] | 363 | | postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector |
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| 364 | | postfix_expression ARROW no_attr_identifier |
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[de62360d] | 365 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), $1, new VarRefNode( $3 )); } |
---|
[4d51835] | 366 | | postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector |
---|
| 367 | | postfix_expression ICR |
---|
[de62360d] | 368 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::IncrPost ), $1 ); } |
---|
[4d51835] | 369 | | postfix_expression DECR |
---|
[de62360d] | 370 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::DecrPost ), $1 ); } |
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[4d51835] | 371 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99 |
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[630a82a] | 372 | { $$ = new CompoundLiteralNode( $2, new InitializerNode( $5, true ) ); } |
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[097e2b0] | 373 | | postfix_expression '{' argument_expression_list '}' // CFA |
---|
| 374 | { |
---|
| 375 | Token fn; fn.str = new std::string( "?{}" ); // location undefined |
---|
| 376 | $$ = new CompositeExprNode( new VarRefNode( fn ), (ExpressionNode *)( $1 )->set_link( $3 ) ); |
---|
| 377 | } |
---|
[4d51835] | 378 | ; |
---|
[51b7345] | 379 | |
---|
| 380 | argument_expression_list: |
---|
[4d51835] | 381 | argument_expression |
---|
| 382 | | argument_expression_list ',' argument_expression |
---|
[de62360d] | 383 | { $$ = (ExpressionNode *)( $1->set_link( $3 )); } |
---|
[4d51835] | 384 | ; |
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[51b7345] | 385 | |
---|
| 386 | argument_expression: |
---|
[4d51835] | 387 | // empty |
---|
| 388 | { $$ = 0; } // use default argument |
---|
| 389 | | assignment_expression |
---|
| 390 | | no_attr_identifier ':' assignment_expression |
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[7f5566b] | 391 | { $$ = $3->set_argName( $1 ); } |
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[2871210] | 392 | // Only a list of no_attr_identifier_or_type_name is allowed in this context. However, there is insufficient |
---|
[de62360d] | 393 | // look ahead to distinguish between this list of parameter names and a tuple, so the tuple form must be used |
---|
| 394 | // with an appropriate semantic check. |
---|
[4d51835] | 395 | | '[' push assignment_expression pop ']' ':' assignment_expression |
---|
[7f5566b] | 396 | { $$ = $7->set_argName( $3 ); } |
---|
[4d51835] | 397 | | '[' push assignment_expression ',' tuple_expression_list pop ']' ':' assignment_expression |
---|
[7f5566b] | 398 | { $$ = $9->set_argName( new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); } |
---|
[4d51835] | 399 | ; |
---|
[b87a5ed] | 400 | |
---|
| 401 | field_list: // CFA, tuple field selector |
---|
[4d51835] | 402 | field |
---|
| 403 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
| 404 | ; |
---|
[b87a5ed] | 405 | |
---|
| 406 | field: // CFA, tuple field selector |
---|
[4d51835] | 407 | no_attr_identifier |
---|
| 408 | { $$ = new VarRefNode( $1 ); } |
---|
[bd85400] | 409 | // ambiguity with .0 so space required after field-selection, e.g. |
---|
| 410 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
---|
[4d51835] | 411 | | no_attr_identifier '.' field |
---|
[de62360d] | 412 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 413 | | no_attr_identifier '.' '[' push field_list pop ']' |
---|
[de62360d] | 414 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $5 ); } |
---|
[4d51835] | 415 | | no_attr_identifier ARROW field |
---|
[de62360d] | 416 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 417 | | no_attr_identifier ARROW '[' push field_list pop ']' |
---|
[de62360d] | 418 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $5 ); } |
---|
[4d51835] | 419 | ; |
---|
[51b7345] | 420 | |
---|
| 421 | unary_expression: |
---|
[4d51835] | 422 | postfix_expression |
---|
[c6b1105] | 423 | // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires |
---|
| 424 | // semantics checks, e.g., ++3, 3--, *3, &&3 |
---|
[51b1202] | 425 | | constant |
---|
| 426 | { $$ = $1; } |
---|
| 427 | | string_literal_list |
---|
| 428 | { $$ = $1; } |
---|
[4d51835] | 429 | | EXTENSION cast_expression // GCC |
---|
[e04ef3a] | 430 | { $$ = $2->set_extension( true ); } |
---|
[dd51906] | 431 | | ptrref_operator cast_expression // CFA |
---|
| 432 | { $$ = new CompositeExprNode( $1, $2 ); } |
---|
[c6b1105] | 433 | // '*' ('&') is separated from unary_operator because of shift/reduce conflict in: |
---|
| 434 | // { * X; } // dereference X |
---|
| 435 | // { * int X; } // CFA declaration of pointer to int |
---|
[4d51835] | 436 | | unary_operator cast_expression |
---|
[de62360d] | 437 | { $$ = new CompositeExprNode( $1, $2 ); } |
---|
[dd51906] | 438 | | ICR unary_expression |
---|
| 439 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Incr ), $2 ); } |
---|
| 440 | | DECR unary_expression |
---|
| 441 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Decr ), $2 ); } |
---|
[4d51835] | 442 | | SIZEOF unary_expression |
---|
[de62360d] | 443 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), $2 ); } |
---|
[4d51835] | 444 | | SIZEOF '(' type_name_no_function ')' |
---|
[de62360d] | 445 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), new TypeValueNode( $3 )); } |
---|
[5721a6d] | 446 | | OFFSETOF '(' type_name_no_function ',' no_attr_identifier ')' |
---|
[90c3b1c] | 447 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::OffsetOf ), new TypeValueNode( $3 ), new VarRefNode( $5 )); } |
---|
[4d51835] | 448 | | ATTR_IDENTIFIER |
---|
[de62360d] | 449 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 )); } |
---|
[4d51835] | 450 | | ATTR_IDENTIFIER '(' type_name ')' |
---|
[de62360d] | 451 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), new TypeValueNode( $3 )); } |
---|
[4d51835] | 452 | | ATTR_IDENTIFIER '(' argument_expression ')' |
---|
[de62360d] | 453 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 454 | | ALIGNOF unary_expression // GCC, variable alignment |
---|
[de62360d] | 455 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), $2 ); } |
---|
[4d51835] | 456 | | ALIGNOF '(' type_name_no_function ')' // GCC, type alignment |
---|
[02e5ab6] | 457 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), new TypeValueNode( $3 ) ); } |
---|
[c6b1105] | 458 | // | ANDAND IDENTIFIER // GCC, address of label |
---|
| 459 | // { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LabelAddress ), new VarRefNode( $2, true ) ); } |
---|
[4d51835] | 460 | ; |
---|
[51b7345] | 461 | |
---|
[dd51906] | 462 | ptrref_operator: |
---|
| 463 | '*' { $$ = new OperatorNode( OperatorNode::PointTo ); } |
---|
| 464 | | '&' { $$ = new OperatorNode( OperatorNode::AddressOf ); } |
---|
[c6b1105] | 465 | // GCC, address of label must be handled by semantic check for ref,ref,label |
---|
| 466 | | ANDAND { $$ = new OperatorNode( OperatorNode::And ); } |
---|
[dd51906] | 467 | ; |
---|
| 468 | |
---|
[51b7345] | 469 | unary_operator: |
---|
[dd51906] | 470 | '+' { $$ = new OperatorNode( OperatorNode::UnPlus ); } |
---|
[de62360d] | 471 | | '-' { $$ = new OperatorNode( OperatorNode::UnMinus ); } |
---|
[dd51906] | 472 | | '!' { $$ = new OperatorNode( OperatorNode::Neg ); } |
---|
[de62360d] | 473 | | '~' { $$ = new OperatorNode( OperatorNode::BitNeg ); } |
---|
[4d51835] | 474 | ; |
---|
[51b7345] | 475 | |
---|
| 476 | cast_expression: |
---|
[4d51835] | 477 | unary_expression |
---|
| 478 | | '(' type_name_no_function ')' cast_expression |
---|
[de62360d] | 479 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); } |
---|
[4d51835] | 480 | | '(' type_name_no_function ')' tuple |
---|
[de62360d] | 481 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); } |
---|
[4d51835] | 482 | ; |
---|
[51b7345] | 483 | |
---|
| 484 | multiplicative_expression: |
---|
[4d51835] | 485 | cast_expression |
---|
| 486 | | multiplicative_expression '*' cast_expression |
---|
[de62360d] | 487 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mul ), $1, $3 ); } |
---|
[4d51835] | 488 | | multiplicative_expression '/' cast_expression |
---|
[de62360d] | 489 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Div ), $1, $3 ); } |
---|
[4d51835] | 490 | | multiplicative_expression '%' cast_expression |
---|
[de62360d] | 491 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mod ), $1, $3 ); } |
---|
[4d51835] | 492 | ; |
---|
[51b7345] | 493 | |
---|
| 494 | additive_expression: |
---|
[4d51835] | 495 | multiplicative_expression |
---|
| 496 | | additive_expression '+' multiplicative_expression |
---|
[de62360d] | 497 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Plus ), $1, $3 ); } |
---|
[4d51835] | 498 | | additive_expression '-' multiplicative_expression |
---|
[de62360d] | 499 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Minus ), $1, $3 ); } |
---|
[4d51835] | 500 | ; |
---|
[51b7345] | 501 | |
---|
| 502 | shift_expression: |
---|
[4d51835] | 503 | additive_expression |
---|
| 504 | | shift_expression LS additive_expression |
---|
[de62360d] | 505 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LShift ), $1, $3 ); } |
---|
[4d51835] | 506 | | shift_expression RS additive_expression |
---|
[de62360d] | 507 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::RShift ), $1, $3 ); } |
---|
[4d51835] | 508 | ; |
---|
[51b7345] | 509 | |
---|
| 510 | relational_expression: |
---|
[4d51835] | 511 | shift_expression |
---|
| 512 | | relational_expression '<' shift_expression |
---|
[de62360d] | 513 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LThan ), $1, $3 ); } |
---|
[4d51835] | 514 | | relational_expression '>' shift_expression |
---|
[de62360d] | 515 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GThan ), $1, $3 ); } |
---|
[4d51835] | 516 | | relational_expression LE shift_expression |
---|
[de62360d] | 517 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LEThan ), $1, $3 ); } |
---|
[4d51835] | 518 | | relational_expression GE shift_expression |
---|
[de62360d] | 519 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GEThan ), $1, $3 ); } |
---|
[4d51835] | 520 | ; |
---|
[51b7345] | 521 | |
---|
| 522 | equality_expression: |
---|
[4d51835] | 523 | relational_expression |
---|
| 524 | | equality_expression EQ relational_expression |
---|
[de62360d] | 525 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Eq ), $1, $3 ); } |
---|
[4d51835] | 526 | | equality_expression NE relational_expression |
---|
[de62360d] | 527 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Neq ), $1, $3 ); } |
---|
[4d51835] | 528 | ; |
---|
[51b7345] | 529 | |
---|
| 530 | AND_expression: |
---|
[4d51835] | 531 | equality_expression |
---|
| 532 | | AND_expression '&' equality_expression |
---|
[de62360d] | 533 | { $$ =new CompositeExprNode( new OperatorNode( OperatorNode::BitAnd ), $1, $3 ); } |
---|
[4d51835] | 534 | ; |
---|
[51b7345] | 535 | |
---|
| 536 | exclusive_OR_expression: |
---|
[4d51835] | 537 | AND_expression |
---|
| 538 | | exclusive_OR_expression '^' AND_expression |
---|
[de62360d] | 539 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Xor ), $1, $3 ); } |
---|
[4d51835] | 540 | ; |
---|
[51b7345] | 541 | |
---|
| 542 | inclusive_OR_expression: |
---|
[4d51835] | 543 | exclusive_OR_expression |
---|
| 544 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
[de62360d] | 545 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::BitOr ), $1, $3 ); } |
---|
[4d51835] | 546 | ; |
---|
[51b7345] | 547 | |
---|
| 548 | logical_AND_expression: |
---|
[4d51835] | 549 | inclusive_OR_expression |
---|
| 550 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
[de62360d] | 551 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::And ), $1, $3 ); } |
---|
[4d51835] | 552 | ; |
---|
[51b7345] | 553 | |
---|
| 554 | logical_OR_expression: |
---|
[4d51835] | 555 | logical_AND_expression |
---|
| 556 | | logical_OR_expression OROR logical_AND_expression |
---|
[de62360d] | 557 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Or ), $1, $3 ); } |
---|
[4d51835] | 558 | ; |
---|
[51b7345] | 559 | |
---|
| 560 | conditional_expression: |
---|
[4d51835] | 561 | logical_OR_expression |
---|
| 562 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
[de62360d] | 563 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode *)mkList( (*$1, *$3, *$5 ) ) ); } |
---|
[4d51835] | 564 | | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand |
---|
[de62360d] | 565 | { $$=new CompositeExprNode( new OperatorNode( OperatorNode::NCond ), $1, $4 ); } |
---|
[4d51835] | 566 | | logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression |
---|
[de62360d] | 567 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode *)mkList( (*$1, *$3, *$5 ) ) ); } |
---|
[4d51835] | 568 | ; |
---|
[51b7345] | 569 | |
---|
| 570 | constant_expression: |
---|
[4d51835] | 571 | conditional_expression |
---|
| 572 | ; |
---|
[51b7345] | 573 | |
---|
| 574 | assignment_expression: |
---|
[4d51835] | 575 | // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples |
---|
| 576 | conditional_expression |
---|
| 577 | | unary_expression '=' assignment_expression |
---|
[de62360d] | 578 | { $$ =new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $3 ); } |
---|
[4d51835] | 579 | | unary_expression assignment_operator assignment_expression |
---|
[de62360d] | 580 | { $$ =new CompositeExprNode( $2, $1, $3 ); } |
---|
[4d51835] | 581 | | tuple assignment_opt // CFA, tuple expression |
---|
[de62360d] | 582 | { $$ = ( $2 == 0 ) ? $1 : new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $2 ); } |
---|
[4d51835] | 583 | ; |
---|
[51b7345] | 584 | |
---|
| 585 | assignment_expression_opt: |
---|
[4d51835] | 586 | // empty |
---|
| 587 | { $$ = new NullExprNode; } |
---|
| 588 | | assignment_expression |
---|
| 589 | ; |
---|
[b87a5ed] | 590 | |
---|
| 591 | tuple: // CFA, tuple |
---|
[de62360d] | 592 | // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with |
---|
| 593 | // comma_expression in new_identifier_parameter_array and new_abstract_array |
---|
[2871210] | 594 | '[' ']' |
---|
[4d51835] | 595 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ) ); } |
---|
| 596 | | '[' push assignment_expression pop ']' |
---|
| 597 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), $3 ); } |
---|
| 598 | | '[' push ',' tuple_expression_list pop ']' |
---|
| 599 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(new NullExprNode)->set_link( $4 ) ); } |
---|
| 600 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
---|
| 601 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 ) ) ); } |
---|
| 602 | ; |
---|
[51b7345] | 603 | |
---|
| 604 | tuple_expression_list: |
---|
[4d51835] | 605 | assignment_expression_opt |
---|
| 606 | | tuple_expression_list ',' assignment_expression_opt |
---|
| 607 | { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
| 608 | ; |
---|
[51b7345] | 609 | |
---|
| 610 | assignment_operator: |
---|
[de62360d] | 611 | MULTassign { $$ = new OperatorNode( OperatorNode::MulAssn ); } |
---|
| 612 | | DIVassign { $$ = new OperatorNode( OperatorNode::DivAssn ); } |
---|
| 613 | | MODassign { $$ = new OperatorNode( OperatorNode::ModAssn ); } |
---|
| 614 | | PLUSassign { $$ = new OperatorNode( OperatorNode::PlusAssn ); } |
---|
| 615 | | MINUSassign { $$ = new OperatorNode( OperatorNode::MinusAssn ); } |
---|
| 616 | | LSassign { $$ = new OperatorNode( OperatorNode::LSAssn ); } |
---|
| 617 | | RSassign { $$ = new OperatorNode( OperatorNode::RSAssn ); } |
---|
| 618 | | ANDassign { $$ = new OperatorNode( OperatorNode::AndAssn ); } |
---|
| 619 | | ERassign { $$ = new OperatorNode( OperatorNode::ERAssn ); } |
---|
| 620 | | ORassign { $$ = new OperatorNode( OperatorNode::OrAssn ); } |
---|
[4d51835] | 621 | ; |
---|
[51b7345] | 622 | |
---|
| 623 | comma_expression: |
---|
[4d51835] | 624 | assignment_expression |
---|
[de62360d] | 625 | | comma_expression ',' assignment_expression // { $$ = (ExpressionNode *)$1->add_to_list( $3 ); } |
---|
| 626 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Comma ), $1, $3 ); } |
---|
[4d51835] | 627 | ; |
---|
[51b7345] | 628 | |
---|
| 629 | comma_expression_opt: |
---|
[4d51835] | 630 | // empty |
---|
| 631 | { $$ = 0; } |
---|
| 632 | | comma_expression |
---|
| 633 | ; |
---|
[51b7345] | 634 | |
---|
[c11e31c] | 635 | //*************************** STATEMENTS ******************************* |
---|
[51b7345] | 636 | |
---|
| 637 | statement: |
---|
[4d51835] | 638 | labeled_statement |
---|
| 639 | | compound_statement |
---|
| 640 | | expression_statement { $$ = $1; } |
---|
| 641 | | selection_statement |
---|
| 642 | | iteration_statement |
---|
| 643 | | jump_statement |
---|
| 644 | | exception_statement |
---|
| 645 | | asm_statement |
---|
[097e2b0] | 646 | | '^' postfix_expression '{' argument_expression_list '}' ';' // CFA |
---|
| 647 | { |
---|
| 648 | Token fn; fn.str = new std::string( "^?{}" ); // location undefined |
---|
| 649 | $$ = new StatementNode( StatementNode::Exp, new CompositeExprNode( new VarRefNode( fn ), |
---|
[68a8ba2a] | 650 | (ExpressionNode *)( $2 )->set_link( $4 ) ), 0 ); |
---|
[097e2b0] | 651 | } |
---|
[4d51835] | 652 | ; |
---|
[51b7345] | 653 | |
---|
| 654 | labeled_statement: |
---|
[c6b1105] | 655 | // labels cannot be identifiers 0 or 1 |
---|
| 656 | IDENTIFIER ':' attribute_list_opt statement |
---|
[1db21619] | 657 | { |
---|
| 658 | $$ = $4->add_label( $1 ); |
---|
| 659 | } |
---|
[4d51835] | 660 | ; |
---|
[51b7345] | 661 | |
---|
| 662 | compound_statement: |
---|
[4d51835] | 663 | '{' '}' |
---|
| 664 | { $$ = new CompoundStmtNode( (StatementNode *)0 ); } |
---|
| 665 | | '{' |
---|
[de62360d] | 666 | // Two scopes are necessary because the block itself has a scope, but every declaration within the block also |
---|
| 667 | // requires its own scope |
---|
[4d51835] | 668 | push push |
---|
[51b1202] | 669 | local_label_declaration_opt // GCC, local labels |
---|
[4d51835] | 670 | block_item_list pop '}' // C99, intermix declarations and statements |
---|
| 671 | { $$ = new CompoundStmtNode( $5 ); } |
---|
| 672 | ; |
---|
[b87a5ed] | 673 | |
---|
| 674 | block_item_list: // C99 |
---|
[4d51835] | 675 | block_item |
---|
| 676 | | block_item_list push block_item |
---|
[de62360d] | 677 | { if ( $1 != 0 ) { $1->set_link( $3 ); $$ = $1; } } |
---|
[4d51835] | 678 | ; |
---|
[51b7345] | 679 | |
---|
| 680 | block_item: |
---|
[4d51835] | 681 | declaration // CFA, new & old style declarations |
---|
| 682 | { $$ = new StatementNode( $1 ); } |
---|
| 683 | | EXTENSION declaration // GCC |
---|
[e04ef3a] | 684 | { $$ = new StatementNode( $2 )/*->set_extension( true )*/; } |
---|
[4d51835] | 685 | | function_definition |
---|
| 686 | { $$ = new StatementNode( $1 ); } |
---|
| 687 | | statement pop |
---|
| 688 | ; |
---|
[51b7345] | 689 | |
---|
| 690 | statement_list: |
---|
[4d51835] | 691 | statement |
---|
| 692 | | statement_list statement |
---|
[de62360d] | 693 | { if ( $1 != 0 ) { $1->set_link( $2 ); $$ = $1; } } |
---|
[4d51835] | 694 | ; |
---|
[51b7345] | 695 | |
---|
| 696 | expression_statement: |
---|
[4d51835] | 697 | comma_expression_opt ';' |
---|
[de62360d] | 698 | { $$ = new StatementNode( StatementNode::Exp, $1, 0 ); } |
---|
[4d51835] | 699 | ; |
---|
[51b7345] | 700 | |
---|
| 701 | selection_statement: |
---|
[4d51835] | 702 | IF '(' comma_expression ')' statement %prec THEN |
---|
| 703 | // explicitly deal with the shift/reduce conflict on if/else |
---|
[de62360d] | 704 | { $$ = new StatementNode( StatementNode::If, $3, $5 ); } |
---|
[4d51835] | 705 | | IF '(' comma_expression ')' statement ELSE statement |
---|
[de62360d] | 706 | { $$ = new StatementNode( StatementNode::If, $3, (StatementNode *)mkList((*$5, *$7 )) ); } |
---|
[4d51835] | 707 | | SWITCH '(' comma_expression ')' case_clause // CFA |
---|
[de62360d] | 708 | { $$ = new StatementNode( StatementNode::Switch, $3, $5 ); } |
---|
[4d51835] | 709 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA |
---|
[de62360d] | 710 | { $$ = new StatementNode( StatementNode::Switch, $3, $8 ); /* xxx */ } |
---|
| 711 | // The semantics of the declaration list is changed to include any associated initialization, which is performed |
---|
| 712 | // *before* the transfer to the appropriate case clause. Statements after the initial declaration list can |
---|
| 713 | // never be executed, and therefore, are removed from the grammar even though C allows it. |
---|
[4d51835] | 714 | | CHOOSE '(' comma_expression ')' case_clause // CFA |
---|
[de62360d] | 715 | { $$ = new StatementNode( StatementNode::Choose, $3, $5 ); } |
---|
[4d51835] | 716 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA |
---|
[de62360d] | 717 | { $$ = new StatementNode( StatementNode::Choose, $3, $8 ); } |
---|
[4d51835] | 718 | ; |
---|
[b87a5ed] | 719 | |
---|
[de62360d] | 720 | // CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case |
---|
| 721 | // clause allows a list of values and subranges. |
---|
[b87a5ed] | 722 | |
---|
| 723 | case_value: // CFA |
---|
[4d51835] | 724 | constant_expression { $$ = $1; } |
---|
| 725 | | constant_expression ELLIPSIS constant_expression // GCC, subrange |
---|
[de62360d] | 726 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); } |
---|
[4d51835] | 727 | | subrange // CFA, subrange |
---|
| 728 | ; |
---|
[b87a5ed] | 729 | |
---|
| 730 | case_value_list: // CFA |
---|
[4d51835] | 731 | case_value |
---|
| 732 | | case_value_list ',' case_value |
---|
[de62360d] | 733 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(tupleContents( $1 ))->set_link( $3 ) ); } |
---|
[4d51835] | 734 | ; |
---|
[b87a5ed] | 735 | |
---|
| 736 | case_label: // CFA |
---|
[de62360d] | 737 | CASE case_value_list ':' { $$ = new StatementNode( StatementNode::Case, $2, 0 ); } |
---|
| 738 | | DEFAULT ':' { $$ = new StatementNode( StatementNode::Default ); } |
---|
[4d51835] | 739 | // A semantic check is required to ensure only one default clause per switch/choose statement. |
---|
| 740 | ; |
---|
[b87a5ed] | 741 | |
---|
| 742 | case_label_list: // CFA |
---|
[4d51835] | 743 | case_label |
---|
[de62360d] | 744 | | case_label_list case_label { $$ = (StatementNode *)( $1->set_link( $2 )); } |
---|
[4d51835] | 745 | ; |
---|
[b87a5ed] | 746 | |
---|
| 747 | case_clause: // CFA |
---|
[de62360d] | 748 | case_label_list statement { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 749 | ; |
---|
[b87a5ed] | 750 | |
---|
| 751 | switch_clause_list_opt: // CFA |
---|
[4d51835] | 752 | // empty |
---|
| 753 | { $$ = 0; } |
---|
| 754 | | switch_clause_list |
---|
| 755 | ; |
---|
[b87a5ed] | 756 | |
---|
| 757 | switch_clause_list: // CFA |
---|
[4d51835] | 758 | case_label_list statement_list |
---|
[de62360d] | 759 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 760 | | switch_clause_list case_label_list statement_list |
---|
[de62360d] | 761 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 762 | ; |
---|
[b87a5ed] | 763 | |
---|
| 764 | choose_clause_list_opt: // CFA |
---|
[4d51835] | 765 | // empty |
---|
| 766 | { $$ = 0; } |
---|
| 767 | | choose_clause_list |
---|
| 768 | ; |
---|
[b87a5ed] | 769 | |
---|
| 770 | choose_clause_list: // CFA |
---|
[4d51835] | 771 | case_label_list fall_through |
---|
[de62360d] | 772 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 773 | | case_label_list statement_list fall_through_opt |
---|
[de62360d] | 774 | { $$ = $1->append_last_case((StatementNode *)mkList((*$2,*$3 ))); } |
---|
[4d51835] | 775 | | choose_clause_list case_label_list fall_through |
---|
[de62360d] | 776 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 777 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
[de62360d] | 778 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case((StatementNode *)mkList((*$3,*$4 ))))); } |
---|
[4d51835] | 779 | ; |
---|
[b87a5ed] | 780 | |
---|
| 781 | fall_through_opt: // CFA |
---|
[4d51835] | 782 | // empty |
---|
| 783 | { $$ = 0; } |
---|
| 784 | | fall_through |
---|
| 785 | ; |
---|
[b87a5ed] | 786 | |
---|
| 787 | fall_through: // CFA |
---|
[7f5566b] | 788 | FALLTHRU { $$ = new StatementNode( StatementNode::Fallthru ); } |
---|
| 789 | | FALLTHRU ';' { $$ = new StatementNode( StatementNode::Fallthru ); } |
---|
[4d51835] | 790 | ; |
---|
[51b7345] | 791 | |
---|
| 792 | iteration_statement: |
---|
[4d51835] | 793 | WHILE '(' comma_expression ')' statement |
---|
[de62360d] | 794 | { $$ = new StatementNode( StatementNode::While, $3, $5 ); } |
---|
[4d51835] | 795 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
[de62360d] | 796 | { $$ = new StatementNode( StatementNode::Do, $5, $2 ); } |
---|
[4d51835] | 797 | | FOR '(' push for_control_expression ')' statement |
---|
[de62360d] | 798 | { $$ = new StatementNode( StatementNode::For, $4, $6 ); } |
---|
[4d51835] | 799 | ; |
---|
[51b7345] | 800 | |
---|
| 801 | for_control_expression: |
---|
[4d51835] | 802 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
[de62360d] | 803 | { $$ = new ForCtlExprNode( $1, $4, $6 ); } |
---|
[4d51835] | 804 | | declaration comma_expression_opt ';' comma_expression_opt // C99 |
---|
[de62360d] | 805 | { $$ = new ForCtlExprNode( $1, $2, $4 ); } |
---|
[4d51835] | 806 | ; |
---|
[51b7345] | 807 | |
---|
| 808 | jump_statement: |
---|
[c6b1105] | 809 | GOTO IDENTIFIER ';' |
---|
[de62360d] | 810 | { $$ = new StatementNode( StatementNode::Goto, $2 ); } |
---|
[4d51835] | 811 | | GOTO '*' comma_expression ';' // GCC, computed goto |
---|
[de62360d] | 812 | // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3 ); |
---|
| 813 | // whereas normal operator precedence yields goto (*i)+3; |
---|
| 814 | { $$ = new StatementNode( StatementNode::Goto, $3 ); } |
---|
[4d51835] | 815 | | CONTINUE ';' |
---|
[de62360d] | 816 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[7f5566b] | 817 | { $$ = new StatementNode( StatementNode::Continue ); } |
---|
[c6b1105] | 818 | | CONTINUE IDENTIFIER ';' // CFA, multi-level continue |
---|
[de62360d] | 819 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 820 | // the target of the transfer appears only at the start of an iteration statement. |
---|
| 821 | { $$ = new StatementNode( StatementNode::Continue, $2 ); } |
---|
[4d51835] | 822 | | BREAK ';' |
---|
[de62360d] | 823 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[7f5566b] | 824 | { $$ = new StatementNode( StatementNode::Break ); } |
---|
[c6b1105] | 825 | | BREAK IDENTIFIER ';' // CFA, multi-level exit |
---|
[de62360d] | 826 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 827 | // the target of the transfer appears only at the start of an iteration statement. |
---|
| 828 | { $$ = new StatementNode( StatementNode::Break, $2 ); } |
---|
[4d51835] | 829 | | RETURN comma_expression_opt ';' |
---|
[de62360d] | 830 | { $$ = new StatementNode( StatementNode::Return, $2, 0 ); } |
---|
[02e5ab6] | 831 | | THROW assignment_expression_opt ';' |
---|
[de62360d] | 832 | { $$ = new StatementNode( StatementNode::Throw, $2, 0 ); } |
---|
[02e5ab6] | 833 | // | THROW ';' |
---|
| 834 | // { $$ = new StatementNode( StatementNode::Throw ); } |
---|
| 835 | | THROWRESUME assignment_expression_opt ';' |
---|
| 836 | { $$ = new StatementNode( StatementNode::Throw, $2, 0 ); } |
---|
| 837 | | THROWRESUME assignment_expression_opt AT assignment_expression ';' |
---|
| 838 | { $$ = new StatementNode( StatementNode::Throw, $2, 0 ); } |
---|
| 839 | // | THROWRESUME ';' |
---|
| 840 | // { $$ = new StatementNode( StatementNode::Throw ); } |
---|
[4d51835] | 841 | ; |
---|
[51b7345] | 842 | |
---|
| 843 | exception_statement: |
---|
[4d51835] | 844 | TRY compound_statement handler_list |
---|
[de62360d] | 845 | { $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); } |
---|
[4d51835] | 846 | | TRY compound_statement finally_clause |
---|
[de62360d] | 847 | { $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); } |
---|
[4d51835] | 848 | | TRY compound_statement handler_list finally_clause |
---|
| 849 | { |
---|
[de62360d] | 850 | $3->set_link( $4 ); |
---|
| 851 | $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); |
---|
[4d51835] | 852 | } |
---|
| 853 | ; |
---|
[51b7345] | 854 | |
---|
| 855 | handler_list: |
---|
[4d51835] | 856 | // There must be at least one catch clause |
---|
| 857 | handler_clause |
---|
[de62360d] | 858 | // ISO/IEC 9899:1999 Section 15.3(6 ) If present, a "..." handler shall be the last handler for its try block. |
---|
[4d51835] | 859 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 860 | { $$ = StatementNode::newCatchStmt( 0, $5, true ); } |
---|
| 861 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 862 | { $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); } |
---|
[02e5ab6] | 863 | | CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
| 864 | { $$ = StatementNode::newCatchStmt( 0, $5, true ); } |
---|
| 865 | | handler_clause CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
| 866 | { $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); } |
---|
[4d51835] | 867 | ; |
---|
[51b7345] | 868 | |
---|
| 869 | handler_clause: |
---|
[4d51835] | 870 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[de62360d] | 871 | { $$ = StatementNode::newCatchStmt( $5, $8 ); } |
---|
[4d51835] | 872 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[de62360d] | 873 | { $$ = $1->set_link( StatementNode::newCatchStmt( $6, $9 ) ); } |
---|
[02e5ab6] | 874 | | CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
| 875 | { $$ = StatementNode::newCatchStmt( $5, $8 ); } |
---|
| 876 | | handler_clause CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
| 877 | { $$ = $1->set_link( StatementNode::newCatchStmt( $6, $9 ) ); } |
---|
[4d51835] | 878 | ; |
---|
[51b7345] | 879 | |
---|
| 880 | finally_clause: |
---|
[4d51835] | 881 | FINALLY compound_statement |
---|
| 882 | { |
---|
[de62360d] | 883 | $$ = new StatementNode( StatementNode::Finally, 0, $2 ); |
---|
[4d51835] | 884 | std::cout << "Just created a finally node" << std::endl; |
---|
| 885 | } |
---|
| 886 | ; |
---|
[51b7345] | 887 | |
---|
| 888 | exception_declaration: |
---|
[4d51835] | 889 | // A semantic check is required to ensure type_specifier does not create a new type, e.g.: |
---|
| 890 | // |
---|
| 891 | // catch ( struct { int i; } x ) ... |
---|
| 892 | // |
---|
| 893 | // This new type cannot catch any thrown type because of name equivalence among types. |
---|
| 894 | type_specifier |
---|
| 895 | | type_specifier declarator |
---|
| 896 | { |
---|
| 897 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 898 | $$ = $2->addType( $1 ); |
---|
| 899 | } |
---|
| 900 | | type_specifier variable_abstract_declarator |
---|
| 901 | { $$ = $2->addType( $1 ); } |
---|
| 902 | | new_abstract_declarator_tuple no_attr_identifier // CFA |
---|
| 903 | { |
---|
| 904 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 905 | $$ = $1->addName( $2 ); |
---|
| 906 | } |
---|
| 907 | | new_abstract_declarator_tuple // CFA |
---|
| 908 | ; |
---|
[51b7345] | 909 | |
---|
| 910 | asm_statement: |
---|
[7f5566b] | 911 | ASM asm_volatile_opt '(' string_literal_list ')' ';' |
---|
| 912 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, 0 ); } |
---|
| 913 | | ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ')' ';' // remaining GCC |
---|
| 914 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6 ); } |
---|
| 915 | | ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
| 916 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6, $8 ); } |
---|
| 917 | | ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';' |
---|
| 918 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6, $8, $10 ); } |
---|
| 919 | | ASM asm_volatile_opt GOTO '(' string_literal_list ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';' |
---|
| 920 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $5, 0, $8, $10, $12 ); } |
---|
| 921 | ; |
---|
| 922 | |
---|
| 923 | asm_volatile_opt: // GCC |
---|
| 924 | // empty |
---|
| 925 | { $$ = false; } |
---|
| 926 | | VOLATILE |
---|
| 927 | { $$ = true; } |
---|
[4d51835] | 928 | ; |
---|
[b87a5ed] | 929 | |
---|
| 930 | asm_operands_opt: // GCC |
---|
[4d51835] | 931 | // empty |
---|
[7f5566b] | 932 | { $$ = 0; } // use default argument |
---|
[4d51835] | 933 | | asm_operands_list |
---|
| 934 | ; |
---|
[b87a5ed] | 935 | |
---|
| 936 | asm_operands_list: // GCC |
---|
[4d51835] | 937 | asm_operand |
---|
| 938 | | asm_operands_list ',' asm_operand |
---|
[7f5566b] | 939 | { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
[4d51835] | 940 | ; |
---|
[b87a5ed] | 941 | |
---|
| 942 | asm_operand: // GCC |
---|
[7f5566b] | 943 | string_literal_list '(' constant_expression ')' |
---|
| 944 | { $$ = new AsmExprNode( 0, $1, $3 ); } |
---|
| 945 | | '[' constant_expression ']' string_literal_list '(' constant_expression ')' |
---|
| 946 | { $$ = new AsmExprNode( $2, $4, $6 ); } |
---|
| 947 | ; |
---|
| 948 | |
---|
| 949 | asm_clobbers_list_opt: // GCC |
---|
| 950 | // empty |
---|
| 951 | { $$ = 0; } // use default argument |
---|
| 952 | | string_literal_list |
---|
| 953 | { $$ = $1; } |
---|
| 954 | | asm_clobbers_list_opt ',' string_literal_list |
---|
| 955 | { $$ = (ConstantNode *)$1->set_link( $3 ); } |
---|
[4d51835] | 956 | ; |
---|
[b87a5ed] | 957 | |
---|
[7f5566b] | 958 | label_list: |
---|
| 959 | no_attr_identifier |
---|
| 960 | { $$ = new LabelNode(); $$->append_label( $1 ); } |
---|
| 961 | | label_list ',' no_attr_identifier |
---|
| 962 | { $$ = $1; $1->append_label( $3 ); } |
---|
[4d51835] | 963 | ; |
---|
[51b7345] | 964 | |
---|
[c11e31c] | 965 | //******************************* DECLARATIONS ********************************* |
---|
[51b7345] | 966 | |
---|
[b87a5ed] | 967 | declaration_list_opt: // used at beginning of switch statement |
---|
[4d51835] | 968 | pop |
---|
| 969 | { $$ = 0; } |
---|
| 970 | | declaration_list |
---|
| 971 | ; |
---|
[51b7345] | 972 | |
---|
| 973 | declaration_list: |
---|
[4d51835] | 974 | declaration |
---|
| 975 | | declaration_list push declaration |
---|
| 976 | { $$ = $1->appendList( $3 ); } |
---|
| 977 | ; |
---|
[51b7345] | 978 | |
---|
[b87a5ed] | 979 | old_declaration_list_opt: // used to declare parameter types in K&R style functions |
---|
[4d51835] | 980 | pop |
---|
| 981 | { $$ = 0; } |
---|
| 982 | | old_declaration_list |
---|
| 983 | ; |
---|
[51b7345] | 984 | |
---|
| 985 | old_declaration_list: |
---|
[4d51835] | 986 | old_declaration |
---|
| 987 | | old_declaration_list push old_declaration |
---|
| 988 | { $$ = $1->appendList( $3 ); } |
---|
| 989 | ; |
---|
[b87a5ed] | 990 | |
---|
[51b1202] | 991 | local_label_declaration_opt: // GCC, local label |
---|
[4d51835] | 992 | // empty |
---|
[51b1202] | 993 | | local_label_declaration_list |
---|
[4d51835] | 994 | ; |
---|
[b87a5ed] | 995 | |
---|
[51b1202] | 996 | local_label_declaration_list: // GCC, local label |
---|
| 997 | LABEL local_label_list ';' |
---|
| 998 | | local_label_declaration_list LABEL local_label_list ';' |
---|
[4d51835] | 999 | ; |
---|
[b87a5ed] | 1000 | |
---|
[51b1202] | 1001 | local_label_list: // GCC, local label |
---|
[7f5566b] | 1002 | no_attr_identifier_or_type_name {} |
---|
[51b1202] | 1003 | | local_label_list ',' no_attr_identifier_or_type_name {} |
---|
[4d51835] | 1004 | ; |
---|
[b87a5ed] | 1005 | |
---|
| 1006 | declaration: // CFA, new & old style declarations |
---|
[4d51835] | 1007 | new_declaration |
---|
| 1008 | | old_declaration |
---|
| 1009 | ; |
---|
[b87a5ed] | 1010 | |
---|
[de62360d] | 1011 | // C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function |
---|
| 1012 | // declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to |
---|
| 1013 | // the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration |
---|
| 1014 | // modifiers are interpreted from left to right and the entire type specification is distributed across all variables in |
---|
| 1015 | // the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program |
---|
| 1016 | // block, but cannot be mixed within a specific declaration. |
---|
[c11e31c] | 1017 | // |
---|
[b87a5ed] | 1018 | // CFA C |
---|
| 1019 | // [10] int x; int x[10]; // array of 10 integers |
---|
| 1020 | // [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
| 1021 | |
---|
| 1022 | new_declaration: // CFA |
---|
[4d51835] | 1023 | new_variable_declaration pop ';' |
---|
| 1024 | | new_typedef_declaration pop ';' |
---|
| 1025 | | new_function_declaration pop ';' |
---|
| 1026 | | type_declaring_list pop ';' |
---|
[4040425] | 1027 | | trait_specifier pop ';' |
---|
[4d51835] | 1028 | ; |
---|
[b87a5ed] | 1029 | |
---|
| 1030 | new_variable_declaration: // CFA |
---|
[4d51835] | 1031 | new_variable_specifier initializer_opt |
---|
| 1032 | { |
---|
| 1033 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1034 | $$ = $1->addInitializer( $2 ); |
---|
[4d51835] | 1035 | } |
---|
| 1036 | | declaration_qualifier_list new_variable_specifier initializer_opt |
---|
[de62360d] | 1037 | // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude |
---|
| 1038 | // them as a type_qualifier cannot appear in that context. |
---|
[4d51835] | 1039 | { |
---|
| 1040 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1041 | $$ = $2->addQualifiers( $1 )->addInitializer( $3 );; |
---|
[4d51835] | 1042 | } |
---|
[2871210] | 1043 | | new_variable_declaration pop ',' push identifier_or_type_name initializer_opt |
---|
[4d51835] | 1044 | { |
---|
| 1045 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
[3cfe27f] | 1046 | $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); |
---|
[4d51835] | 1047 | } |
---|
| 1048 | ; |
---|
[b87a5ed] | 1049 | |
---|
| 1050 | new_variable_specifier: // CFA |
---|
[de62360d] | 1051 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1052 | // storage-class |
---|
[2871210] | 1053 | new_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1054 | { |
---|
| 1055 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1056 | $$ = $1->addName( $2 ); |
---|
| 1057 | } |
---|
[2871210] | 1058 | | new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1059 | { |
---|
| 1060 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1061 | $$ = $1->addName( $2 ); |
---|
| 1062 | } |
---|
[2871210] | 1063 | | type_qualifier_list new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1064 | { |
---|
| 1065 | typedefTable.setNextIdentifier( *$3 ); |
---|
| 1066 | $$ = $2->addQualifiers( $1 )->addName( $3 ); |
---|
| 1067 | } |
---|
| 1068 | ; |
---|
[b87a5ed] | 1069 | |
---|
| 1070 | new_function_declaration: // CFA |
---|
[4d51835] | 1071 | new_function_specifier |
---|
| 1072 | { |
---|
| 1073 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1074 | $$ = $1; |
---|
| 1075 | } |
---|
| 1076 | | type_qualifier_list new_function_specifier |
---|
| 1077 | { |
---|
| 1078 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1079 | $$ = $2->addQualifiers( $1 ); |
---|
| 1080 | } |
---|
| 1081 | | declaration_qualifier_list new_function_specifier |
---|
| 1082 | { |
---|
| 1083 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1084 | $$ = $2->addQualifiers( $1 ); |
---|
| 1085 | } |
---|
| 1086 | | declaration_qualifier_list type_qualifier_list new_function_specifier |
---|
| 1087 | { |
---|
| 1088 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1089 | $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); |
---|
| 1090 | } |
---|
[2871210] | 1091 | | new_function_declaration pop ',' push identifier_or_type_name |
---|
[4d51835] | 1092 | { |
---|
| 1093 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 1094 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1095 | } |
---|
| 1096 | ; |
---|
[b87a5ed] | 1097 | |
---|
| 1098 | new_function_specifier: // CFA |
---|
[2871210] | 1099 | '[' ']' identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' // S/R conflict |
---|
[4d51835] | 1100 | { |
---|
[2871210] | 1101 | $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true ); |
---|
[4d51835] | 1102 | } |
---|
[2871210] | 1103 | // '[' ']' identifier '(' push new_parameter_type_list_opt pop ')' |
---|
| 1104 | // { |
---|
| 1105 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1106 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1107 | // } |
---|
| 1108 | // | '[' ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')' |
---|
| 1109 | // { |
---|
| 1110 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1111 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1112 | // } |
---|
| 1113 | // | '[' ']' typegen_name |
---|
| 1114 | // identifier_or_type_name must be broken apart because of the sequence: |
---|
[4d51835] | 1115 | // |
---|
[2871210] | 1116 | // '[' ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[4d51835] | 1117 | // '[' ']' type_specifier |
---|
| 1118 | // |
---|
[2871210] | 1119 | // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be |
---|
| 1120 | // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name. |
---|
| 1121 | | new_abstract_tuple identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[de62360d] | 1122 | // To obtain LR(1 ), this rule must be factored out from function return type (see new_abstract_declarator). |
---|
[4d51835] | 1123 | { |
---|
| 1124 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1125 | } |
---|
[2871210] | 1126 | | new_function_return identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[4d51835] | 1127 | { |
---|
| 1128 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1129 | } |
---|
| 1130 | ; |
---|
[b87a5ed] | 1131 | |
---|
| 1132 | new_function_return: // CFA |
---|
[4d51835] | 1133 | '[' push new_parameter_list pop ']' |
---|
| 1134 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 1135 | | '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']' |
---|
[de62360d] | 1136 | // To obtain LR(1 ), the last new_abstract_parameter_list is added into this flattened rule to lookahead to the |
---|
| 1137 | // ']'. |
---|
[4d51835] | 1138 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
| 1139 | ; |
---|
[b87a5ed] | 1140 | |
---|
| 1141 | new_typedef_declaration: // CFA |
---|
[4d51835] | 1142 | TYPEDEF new_variable_specifier |
---|
| 1143 | { |
---|
[de62360d] | 1144 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1145 | $$ = $2->addTypedef(); |
---|
| 1146 | } |
---|
| 1147 | | TYPEDEF new_function_specifier |
---|
| 1148 | { |
---|
[de62360d] | 1149 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1150 | $$ = $2->addTypedef(); |
---|
| 1151 | } |
---|
| 1152 | | new_typedef_declaration pop ',' push no_attr_identifier |
---|
| 1153 | { |
---|
[de62360d] | 1154 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1155 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1156 | } |
---|
| 1157 | ; |
---|
[b87a5ed] | 1158 | |
---|
[de62360d] | 1159 | // Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as |
---|
| 1160 | // a separate form of declaration, which syntactically precludes storage-class specifiers and initialization. |
---|
[51b7345] | 1161 | |
---|
| 1162 | typedef_declaration: |
---|
[4d51835] | 1163 | TYPEDEF type_specifier declarator |
---|
| 1164 | { |
---|
[de62360d] | 1165 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1166 | $$ = $3->addType( $2 )->addTypedef(); |
---|
| 1167 | } |
---|
| 1168 | | typedef_declaration pop ',' push declarator |
---|
| 1169 | { |
---|
[de62360d] | 1170 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1171 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
| 1172 | } |
---|
[de62360d] | 1173 | | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1174 | { |
---|
[de62360d] | 1175 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1176 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
| 1177 | } |
---|
| 1178 | | type_specifier TYPEDEF declarator |
---|
| 1179 | { |
---|
[de62360d] | 1180 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1181 | $$ = $3->addType( $1 )->addTypedef(); |
---|
| 1182 | } |
---|
| 1183 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
| 1184 | { |
---|
[de62360d] | 1185 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
| 1186 | $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 ); |
---|
[4d51835] | 1187 | } |
---|
| 1188 | ; |
---|
[b87a5ed] | 1189 | |
---|
[721f17a] | 1190 | typedef_expression: |
---|
| 1191 | // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression |
---|
[4d51835] | 1192 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
| 1193 | { |
---|
[de62360d] | 1194 | typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); |
---|
[4d51835] | 1195 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1196 | } |
---|
| 1197 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
| 1198 | { |
---|
[de62360d] | 1199 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1200 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1201 | } |
---|
| 1202 | ; |
---|
[51b7345] | 1203 | |
---|
| 1204 | old_declaration: |
---|
[4d51835] | 1205 | declaring_list pop ';' |
---|
| 1206 | | typedef_declaration pop ';' |
---|
| 1207 | | typedef_expression pop ';' // GCC, naming expression type |
---|
| 1208 | | sue_declaration_specifier pop ';' |
---|
| 1209 | ; |
---|
[51b7345] | 1210 | |
---|
| 1211 | declaring_list: |
---|
[de62360d] | 1212 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1213 | // storage-class |
---|
[4d51835] | 1214 | declaration_specifier declarator asm_name_opt initializer_opt |
---|
| 1215 | { |
---|
| 1216 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1217 | $$ = ( $2->addType( $1 ))->addInitializer( $4 ); |
---|
[4d51835] | 1218 | } |
---|
| 1219 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1220 | { |
---|
| 1221 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1222 | $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer( $6 ) ) ); |
---|
[4d51835] | 1223 | } |
---|
| 1224 | ; |
---|
[b87a5ed] | 1225 | |
---|
| 1226 | declaration_specifier: // type specifier + storage class |
---|
[4d51835] | 1227 | basic_declaration_specifier |
---|
| 1228 | | sue_declaration_specifier |
---|
| 1229 | | typedef_declaration_specifier |
---|
| 1230 | | typegen_declaration_specifier |
---|
| 1231 | ; |
---|
[b87a5ed] | 1232 | |
---|
| 1233 | type_specifier: // declaration specifier - storage class |
---|
[4d51835] | 1234 | basic_type_specifier |
---|
| 1235 | | sue_type_specifier |
---|
| 1236 | | typedef_type_specifier |
---|
| 1237 | | typegen_type_specifier |
---|
| 1238 | ; |
---|
[b87a5ed] | 1239 | |
---|
| 1240 | type_qualifier_list_opt: // GCC, used in asm_statement |
---|
[4d51835] | 1241 | // empty |
---|
| 1242 | { $$ = 0; } |
---|
| 1243 | | type_qualifier_list |
---|
| 1244 | ; |
---|
[51b7345] | 1245 | |
---|
| 1246 | type_qualifier_list: |
---|
[de62360d] | 1247 | // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration. |
---|
[4d51835] | 1248 | // |
---|
[de62360d] | 1249 | // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same |
---|
| 1250 | // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it |
---|
| 1251 | // appeared only once. |
---|
[4d51835] | 1252 | type_qualifier |
---|
| 1253 | | type_qualifier_list type_qualifier |
---|
| 1254 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1255 | ; |
---|
[51b7345] | 1256 | |
---|
| 1257 | type_qualifier: |
---|
[4d51835] | 1258 | type_qualifier_name |
---|
| 1259 | | attribute |
---|
[1db21619] | 1260 | //{ $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
[4d51835] | 1261 | ; |
---|
[51b7345] | 1262 | |
---|
| 1263 | type_qualifier_name: |
---|
[4d51835] | 1264 | CONST |
---|
| 1265 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
| 1266 | | RESTRICT |
---|
| 1267 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); } |
---|
| 1268 | | VOLATILE |
---|
| 1269 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); } |
---|
| 1270 | | LVALUE // CFA |
---|
| 1271 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); } |
---|
| 1272 | | ATOMIC |
---|
| 1273 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); } |
---|
| 1274 | | FORALL '(' |
---|
| 1275 | { |
---|
| 1276 | typedefTable.enterScope(); |
---|
| 1277 | } |
---|
| 1278 | type_parameter_list ')' // CFA |
---|
| 1279 | { |
---|
| 1280 | typedefTable.leaveScope(); |
---|
| 1281 | $$ = DeclarationNode::newForall( $4 ); |
---|
| 1282 | } |
---|
| 1283 | ; |
---|
[51b7345] | 1284 | |
---|
| 1285 | declaration_qualifier_list: |
---|
[4d51835] | 1286 | storage_class_list |
---|
[de62360d] | 1287 | | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1288 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1289 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
| 1290 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1291 | ; |
---|
[51b7345] | 1292 | |
---|
| 1293 | storage_class_list: |
---|
[de62360d] | 1294 | // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that |
---|
| 1295 | // only one of each is specified, except for inline, which can appear with the others. |
---|
[4d51835] | 1296 | // |
---|
[de62360d] | 1297 | // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration |
---|
| 1298 | // specifiers in a declaration. |
---|
[4d51835] | 1299 | storage_class |
---|
| 1300 | | storage_class_list storage_class |
---|
| 1301 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1302 | ; |
---|
[51b7345] | 1303 | |
---|
| 1304 | storage_class: |
---|
[4d51835] | 1305 | storage_class_name |
---|
| 1306 | ; |
---|
[51b7345] | 1307 | |
---|
| 1308 | storage_class_name: |
---|
[4d51835] | 1309 | EXTERN |
---|
| 1310 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); } |
---|
| 1311 | | STATIC |
---|
| 1312 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); } |
---|
| 1313 | | AUTO |
---|
| 1314 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); } |
---|
| 1315 | | REGISTER |
---|
| 1316 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); } |
---|
| 1317 | | INLINE // C99 |
---|
| 1318 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); } |
---|
| 1319 | | FORTRAN // C99 |
---|
| 1320 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); } |
---|
[68cd1ce] | 1321 | | NORETURN // C11 |
---|
| 1322 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Noreturn ); } |
---|
| 1323 | | THREADLOCAL // C11 |
---|
| 1324 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Threadlocal ); } |
---|
[4d51835] | 1325 | ; |
---|
[51b7345] | 1326 | |
---|
| 1327 | basic_type_name: |
---|
[4d51835] | 1328 | CHAR |
---|
| 1329 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
| 1330 | | DOUBLE |
---|
| 1331 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
| 1332 | | FLOAT |
---|
| 1333 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
| 1334 | | INT |
---|
| 1335 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
| 1336 | | LONG |
---|
| 1337 | { $$ = DeclarationNode::newModifier( DeclarationNode::Long ); } |
---|
| 1338 | | SHORT |
---|
| 1339 | { $$ = DeclarationNode::newModifier( DeclarationNode::Short ); } |
---|
| 1340 | | SIGNED |
---|
| 1341 | { $$ = DeclarationNode::newModifier( DeclarationNode::Signed ); } |
---|
| 1342 | | UNSIGNED |
---|
| 1343 | { $$ = DeclarationNode::newModifier( DeclarationNode::Unsigned ); } |
---|
| 1344 | | VOID |
---|
| 1345 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
| 1346 | | BOOL // C99 |
---|
| 1347 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
| 1348 | | COMPLEX // C99 |
---|
| 1349 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); } |
---|
| 1350 | | IMAGINARY // C99 |
---|
| 1351 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); } |
---|
[90c3b1c] | 1352 | | VALIST // GCC, __builtin_va_list |
---|
| 1353 | { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); } |
---|
[4d51835] | 1354 | ; |
---|
[51b7345] | 1355 | |
---|
| 1356 | basic_declaration_specifier: |
---|
[4d51835] | 1357 | // A semantic check is necessary for conflicting storage classes. |
---|
| 1358 | basic_type_specifier |
---|
| 1359 | | declaration_qualifier_list basic_type_specifier |
---|
| 1360 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1361 | | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1362 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1363 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
| 1364 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1365 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
| 1366 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
| 1367 | ; |
---|
[51b7345] | 1368 | |
---|
| 1369 | basic_type_specifier: |
---|
[4d51835] | 1370 | direct_type_name |
---|
| 1371 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
| 1372 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
| 1373 | ; |
---|
[51b7345] | 1374 | |
---|
| 1375 | direct_type_name: |
---|
[4d51835] | 1376 | // A semantic check is necessary for conflicting type qualifiers. |
---|
| 1377 | basic_type_name |
---|
| 1378 | | type_qualifier_list basic_type_name |
---|
| 1379 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1380 | | direct_type_name type_qualifier |
---|
| 1381 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1382 | | direct_type_name basic_type_name |
---|
| 1383 | { $$ = $1->addType( $2 ); } |
---|
| 1384 | ; |
---|
[51b7345] | 1385 | |
---|
| 1386 | indirect_type_name: |
---|
[4d51835] | 1387 | TYPEOF '(' type_name ')' // GCC: typeof(x) y; |
---|
| 1388 | { $$ = $3; } |
---|
| 1389 | | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y; |
---|
| 1390 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
| 1391 | | ATTR_TYPEGENname '(' type_name ')' // CFA: e.g., @type(x) y; |
---|
| 1392 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1393 | | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y; |
---|
| 1394 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1395 | ; |
---|
[51b7345] | 1396 | |
---|
| 1397 | sue_declaration_specifier: |
---|
[4d51835] | 1398 | sue_type_specifier |
---|
| 1399 | | declaration_qualifier_list sue_type_specifier |
---|
| 1400 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1401 | | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1402 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1403 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
| 1404 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1405 | ; |
---|
[51b7345] | 1406 | |
---|
| 1407 | sue_type_specifier: |
---|
[4d51835] | 1408 | elaborated_type_name // struct, union, enum |
---|
| 1409 | | type_qualifier_list elaborated_type_name |
---|
| 1410 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1411 | | sue_type_specifier type_qualifier |
---|
| 1412 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1413 | ; |
---|
[51b7345] | 1414 | |
---|
| 1415 | typedef_declaration_specifier: |
---|
[4d51835] | 1416 | typedef_type_specifier |
---|
| 1417 | | declaration_qualifier_list typedef_type_specifier |
---|
| 1418 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1419 | | typedef_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1420 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1421 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
| 1422 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1423 | ; |
---|
[b87a5ed] | 1424 | |
---|
| 1425 | typedef_type_specifier: // typedef types |
---|
[4d51835] | 1426 | TYPEDEFname |
---|
| 1427 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
| 1428 | | type_qualifier_list TYPEDEFname |
---|
| 1429 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
| 1430 | | typedef_type_specifier type_qualifier |
---|
| 1431 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1432 | ; |
---|
[51b7345] | 1433 | |
---|
| 1434 | elaborated_type_name: |
---|
[4d51835] | 1435 | aggregate_name |
---|
| 1436 | | enum_name |
---|
| 1437 | ; |
---|
[51b7345] | 1438 | |
---|
| 1439 | aggregate_name: |
---|
[4d51835] | 1440 | aggregate_key '{' field_declaration_list '}' |
---|
[721f17a] | 1441 | { $$ = DeclarationNode::newAggregate( $1, 0, 0, $3 ); } |
---|
[2871210] | 1442 | | aggregate_key no_attr_identifier_or_type_name |
---|
[45161b4d] | 1443 | { |
---|
| 1444 | typedefTable.makeTypedef( *$2 ); |
---|
| 1445 | $$ = DeclarationNode::newAggregate( $1, $2, 0, 0 ); |
---|
| 1446 | } |
---|
| 1447 | | aggregate_key no_attr_identifier_or_type_name |
---|
| 1448 | { typedefTable.makeTypedef( *$2 ); } |
---|
| 1449 | '{' field_declaration_list '}' |
---|
| 1450 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, $5); } |
---|
[721f17a] | 1451 | | aggregate_key '(' type_name_list ')' '{' field_declaration_list '}' // CFA |
---|
[45161b4d] | 1452 | { $$ = DeclarationNode::newAggregate( $1, 0, $3, $6 ); } |
---|
[2871210] | 1453 | | aggregate_key typegen_name // CFA, S/R conflict |
---|
| 1454 | { $$ = $2; } |
---|
[4d51835] | 1455 | ; |
---|
[51b7345] | 1456 | |
---|
| 1457 | aggregate_key: |
---|
[4d51835] | 1458 | STRUCT attribute_list_opt |
---|
| 1459 | { $$ = DeclarationNode::Struct; } |
---|
| 1460 | | UNION attribute_list_opt |
---|
| 1461 | { $$ = DeclarationNode::Union; } |
---|
| 1462 | ; |
---|
[51b7345] | 1463 | |
---|
| 1464 | field_declaration_list: |
---|
[4d51835] | 1465 | field_declaration |
---|
| 1466 | { $$ = $1; } |
---|
| 1467 | | field_declaration_list field_declaration |
---|
| 1468 | { $$ = $1->appendList( $2 ); } |
---|
| 1469 | ; |
---|
[51b7345] | 1470 | |
---|
| 1471 | field_declaration: |
---|
[4d51835] | 1472 | new_field_declaring_list ';' // CFA, new style field declaration |
---|
| 1473 | | EXTENSION new_field_declaring_list ';' // GCC |
---|
[e04ef3a] | 1474 | { $$ = $2/*->set_extension( true )*/; } |
---|
[4d51835] | 1475 | | field_declaring_list ';' |
---|
| 1476 | | EXTENSION field_declaring_list ';' // GCC |
---|
[e04ef3a] | 1477 | { $$ = $2/*->set_extension( true )*/; } |
---|
[4d51835] | 1478 | ; |
---|
[b87a5ed] | 1479 | |
---|
| 1480 | new_field_declaring_list: // CFA, new style field declaration |
---|
[4d51835] | 1481 | new_abstract_declarator_tuple // CFA, no field name |
---|
[2871210] | 1482 | | new_abstract_declarator_tuple no_attr_identifier_or_type_name |
---|
[4d51835] | 1483 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1484 | | new_field_declaring_list ',' no_attr_identifier_or_type_name |
---|
[4d51835] | 1485 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
| 1486 | | new_field_declaring_list ',' // CFA, no field name |
---|
| 1487 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
| 1488 | ; |
---|
[51b7345] | 1489 | |
---|
| 1490 | field_declaring_list: |
---|
[4d51835] | 1491 | type_specifier field_declarator |
---|
| 1492 | { $$ = $2->addType( $1 ); } |
---|
| 1493 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
| 1494 | { $$ = $1->appendList( $1->cloneBaseType( $4 ) ); } |
---|
| 1495 | ; |
---|
[51b7345] | 1496 | |
---|
| 1497 | field_declarator: |
---|
[4d51835] | 1498 | // empty |
---|
| 1499 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name |
---|
| 1500 | | bit_subrange_size // no field name |
---|
| 1501 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
| 1502 | | variable_declarator bit_subrange_size_opt |
---|
| 1503 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1504 | { $$ = $1->addBitfield( $2 ); } |
---|
[c6b1105] | 1505 | | variable_type_redeclarator bit_subrange_size_opt |
---|
[4d51835] | 1506 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1507 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1508 | | variable_abstract_declarator // CFA, no field name |
---|
| 1509 | ; |
---|
[51b7345] | 1510 | |
---|
| 1511 | bit_subrange_size_opt: |
---|
[4d51835] | 1512 | // empty |
---|
| 1513 | { $$ = 0; } |
---|
| 1514 | | bit_subrange_size |
---|
| 1515 | { $$ = $1; } |
---|
| 1516 | ; |
---|
[51b7345] | 1517 | |
---|
| 1518 | bit_subrange_size: |
---|
[4d51835] | 1519 | ':' constant_expression |
---|
| 1520 | { $$ = $2; } |
---|
| 1521 | ; |
---|
[51b7345] | 1522 | |
---|
| 1523 | enum_key: |
---|
[4d51835] | 1524 | ENUM attribute_list_opt |
---|
| 1525 | ; |
---|
[51b7345] | 1526 | |
---|
| 1527 | enum_name: |
---|
[4d51835] | 1528 | enum_key '{' enumerator_list comma_opt '}' |
---|
| 1529 | { $$ = DeclarationNode::newEnum( 0, $3 ); } |
---|
[2871210] | 1530 | | enum_key no_attr_identifier_or_type_name |
---|
[45161b4d] | 1531 | { |
---|
| 1532 | typedefTable.makeTypedef( *$2 ); |
---|
| 1533 | $$ = DeclarationNode::newEnum( $2, 0 ); |
---|
| 1534 | } |
---|
| 1535 | | enum_key no_attr_identifier_or_type_name |
---|
| 1536 | { typedefTable.makeTypedef( *$2 ); } |
---|
| 1537 | '{' enumerator_list comma_opt '}' |
---|
| 1538 | { $$ = DeclarationNode::newEnum( $2, $5 ); } |
---|
[4d51835] | 1539 | ; |
---|
[51b7345] | 1540 | |
---|
| 1541 | enumerator_list: |
---|
[2871210] | 1542 | no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1543 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
[2871210] | 1544 | | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1545 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
| 1546 | ; |
---|
[51b7345] | 1547 | |
---|
| 1548 | enumerator_value_opt: |
---|
[4d51835] | 1549 | // empty |
---|
| 1550 | { $$ = 0; } |
---|
| 1551 | | '=' constant_expression |
---|
| 1552 | { $$ = $2; } |
---|
| 1553 | ; |
---|
[51b7345] | 1554 | |
---|
[c11e31c] | 1555 | // Minimum of one parameter after which ellipsis is allowed only at the end. |
---|
[51b7345] | 1556 | |
---|
[b87a5ed] | 1557 | new_parameter_type_list_opt: // CFA |
---|
[4d51835] | 1558 | // empty |
---|
| 1559 | { $$ = 0; } |
---|
| 1560 | | new_parameter_type_list |
---|
| 1561 | ; |
---|
[b87a5ed] | 1562 | |
---|
| 1563 | new_parameter_type_list: // CFA, abstract + real |
---|
[4d51835] | 1564 | new_abstract_parameter_list |
---|
| 1565 | | new_parameter_list |
---|
| 1566 | | new_parameter_list pop ',' push new_abstract_parameter_list |
---|
| 1567 | { $$ = $1->appendList( $5 ); } |
---|
| 1568 | | new_abstract_parameter_list pop ',' push ELLIPSIS |
---|
| 1569 | { $$ = $1->addVarArgs(); } |
---|
| 1570 | | new_parameter_list pop ',' push ELLIPSIS |
---|
| 1571 | { $$ = $1->addVarArgs(); } |
---|
| 1572 | ; |
---|
[b87a5ed] | 1573 | |
---|
| 1574 | new_parameter_list: // CFA |
---|
[de62360d] | 1575 | // To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last new_abstract_parameter_list is |
---|
| 1576 | // factored out from new_parameter_list, flattening the rules to get lookahead to the ']'. |
---|
[4d51835] | 1577 | new_parameter_declaration |
---|
| 1578 | | new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1579 | { $$ = $1->appendList( $5 ); } |
---|
| 1580 | | new_parameter_list pop ',' push new_parameter_declaration |
---|
| 1581 | { $$ = $1->appendList( $5 ); } |
---|
| 1582 | | new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1583 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
| 1584 | ; |
---|
[b87a5ed] | 1585 | |
---|
| 1586 | new_abstract_parameter_list: // CFA, new & old style abstract |
---|
[4d51835] | 1587 | new_abstract_parameter_declaration |
---|
| 1588 | | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration |
---|
| 1589 | { $$ = $1->appendList( $5 ); } |
---|
| 1590 | ; |
---|
[51b7345] | 1591 | |
---|
| 1592 | parameter_type_list_opt: |
---|
[4d51835] | 1593 | // empty |
---|
| 1594 | { $$ = 0; } |
---|
| 1595 | | parameter_type_list |
---|
| 1596 | ; |
---|
[51b7345] | 1597 | |
---|
| 1598 | parameter_type_list: |
---|
[4d51835] | 1599 | parameter_list |
---|
| 1600 | | parameter_list pop ',' push ELLIPSIS |
---|
| 1601 | { $$ = $1->addVarArgs(); } |
---|
| 1602 | ; |
---|
[b87a5ed] | 1603 | |
---|
| 1604 | parameter_list: // abstract + real |
---|
[4d51835] | 1605 | abstract_parameter_declaration |
---|
| 1606 | | parameter_declaration |
---|
| 1607 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
| 1608 | { $$ = $1->appendList( $5 ); } |
---|
| 1609 | | parameter_list pop ',' push parameter_declaration |
---|
| 1610 | { $$ = $1->appendList( $5 ); } |
---|
| 1611 | ; |
---|
[51b7345] | 1612 | |
---|
[de62360d] | 1613 | // Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics |
---|
[2871210] | 1614 | // for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes. |
---|
[51b7345] | 1615 | |
---|
[b87a5ed] | 1616 | new_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1617 | parameter_declaration |
---|
[2871210] | 1618 | | new_identifier_parameter_declarator_no_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1619 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1620 | | new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1621 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1622 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1623 | | type_qualifier_list new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1624 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
| 1625 | | new_function_specifier |
---|
| 1626 | ; |
---|
[b87a5ed] | 1627 | |
---|
| 1628 | new_abstract_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1629 | abstract_parameter_declaration |
---|
| 1630 | | new_identifier_parameter_declarator_no_tuple |
---|
| 1631 | | new_abstract_tuple |
---|
| 1632 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1633 | | type_qualifier_list new_abstract_tuple |
---|
| 1634 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1635 | | new_abstract_function |
---|
| 1636 | ; |
---|
[51b7345] | 1637 | |
---|
| 1638 | parameter_declaration: |
---|
[4d51835] | 1639 | declaration_specifier identifier_parameter_declarator assignment_opt |
---|
| 1640 | { |
---|
| 1641 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1642 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1643 | } |
---|
[2871210] | 1644 | | declaration_specifier type_parameter_redeclarator assignment_opt |
---|
[4d51835] | 1645 | { |
---|
| 1646 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1647 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1648 | } |
---|
| 1649 | ; |
---|
[51b7345] | 1650 | |
---|
| 1651 | abstract_parameter_declaration: |
---|
[4d51835] | 1652 | declaration_specifier |
---|
| 1653 | | declaration_specifier abstract_parameter_declarator |
---|
| 1654 | { $$ = $2->addType( $1 ); } |
---|
| 1655 | ; |
---|
[51b7345] | 1656 | |
---|
[c11e31c] | 1657 | // ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
[de62360d] | 1658 | // parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on |
---|
| 1659 | // identifiers. The ANSI-style parameter-list can redefine a typedef name. |
---|
[51b7345] | 1660 | |
---|
[b87a5ed] | 1661 | identifier_list: // K&R-style parameter list => no types |
---|
[4d51835] | 1662 | no_attr_identifier |
---|
| 1663 | { $$ = DeclarationNode::newName( $1 ); } |
---|
| 1664 | | identifier_list ',' no_attr_identifier |
---|
| 1665 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
| 1666 | ; |
---|
[51b7345] | 1667 | |
---|
[2871210] | 1668 | identifier_or_type_name: |
---|
[4d51835] | 1669 | identifier |
---|
| 1670 | | TYPEDEFname |
---|
| 1671 | | TYPEGENname |
---|
| 1672 | ; |
---|
[51b7345] | 1673 | |
---|
[2871210] | 1674 | no_01_identifier_or_type_name: |
---|
[4d51835] | 1675 | no_01_identifier |
---|
| 1676 | | TYPEDEFname |
---|
| 1677 | | TYPEGENname |
---|
| 1678 | ; |
---|
[51b7345] | 1679 | |
---|
[2871210] | 1680 | no_attr_identifier_or_type_name: |
---|
[4d51835] | 1681 | no_attr_identifier |
---|
| 1682 | | TYPEDEFname |
---|
[721f17a] | 1683 | | TYPEGENname |
---|
[4d51835] | 1684 | ; |
---|
[b87a5ed] | 1685 | |
---|
| 1686 | type_name_no_function: // sizeof, alignof, cast (constructor) |
---|
[4d51835] | 1687 | new_abstract_declarator_tuple // CFA |
---|
| 1688 | | type_specifier |
---|
| 1689 | | type_specifier variable_abstract_declarator |
---|
| 1690 | { $$ = $2->addType( $1 ); } |
---|
| 1691 | ; |
---|
[b87a5ed] | 1692 | |
---|
| 1693 | type_name: // typeof, assertion |
---|
[4d51835] | 1694 | new_abstract_declarator_tuple // CFA |
---|
| 1695 | | new_abstract_function // CFA |
---|
| 1696 | | type_specifier |
---|
| 1697 | | type_specifier abstract_declarator |
---|
| 1698 | { $$ = $2->addType( $1 ); } |
---|
| 1699 | ; |
---|
[51b7345] | 1700 | |
---|
| 1701 | initializer_opt: |
---|
[4d51835] | 1702 | // empty |
---|
| 1703 | { $$ = 0; } |
---|
[2871210] | 1704 | | '=' initializer |
---|
| 1705 | { $$ = $2; } |
---|
[097e2b0] | 1706 | | ATassign initializer |
---|
[974906e2] | 1707 | { $$ = $2->set_maybeConstructed( false ); } |
---|
[4d51835] | 1708 | ; |
---|
[51b7345] | 1709 | |
---|
| 1710 | initializer: |
---|
[de62360d] | 1711 | assignment_expression { $$ = new InitializerNode( $1 ); } |
---|
| 1712 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); } |
---|
[4d51835] | 1713 | ; |
---|
[51b7345] | 1714 | |
---|
| 1715 | initializer_list: |
---|
[097e2b0] | 1716 | // empty |
---|
| 1717 | { $$ = 0; } |
---|
| 1718 | | initializer |
---|
[4d51835] | 1719 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
[de62360d] | 1720 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_link( $3 ) ); } |
---|
[4d51835] | 1721 | | initializer_list ',' designation initializer |
---|
[de62360d] | 1722 | { $$ = (InitializerNode *)( $1->set_link( $4->set_designators( $3 ) ) ); } |
---|
[4d51835] | 1723 | ; |
---|
[b87a5ed] | 1724 | |
---|
[de62360d] | 1725 | // There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of |
---|
| 1726 | // '=' to separator the designator from the initializer value, as in: |
---|
[c11e31c] | 1727 | // |
---|
[b87a5ed] | 1728 | // int x[10] = { [1] = 3 }; |
---|
[c11e31c] | 1729 | // |
---|
[de62360d] | 1730 | // The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA |
---|
| 1731 | // changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for |
---|
| 1732 | // field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to |
---|
| 1733 | // shift/reduce conflicts |
---|
[51b7345] | 1734 | |
---|
| 1735 | designation: |
---|
[4d51835] | 1736 | designator_list ':' // C99, CFA uses ":" instead of "=" |
---|
[2871210] | 1737 | | no_attr_identifier_or_type_name ':' // GCC, field name |
---|
| 1738 | { $$ = new VarRefNode( $1 ); } |
---|
[4d51835] | 1739 | ; |
---|
[51b7345] | 1740 | |
---|
[b87a5ed] | 1741 | designator_list: // C99 |
---|
[4d51835] | 1742 | designator |
---|
[2871210] | 1743 | | designator_list designator |
---|
| 1744 | { $$ = (ExpressionNode *)( $1->set_link( $2 )); } |
---|
[de62360d] | 1745 | //| designator_list designator { $$ = new CompositeExprNode( $1, $2 ); } |
---|
[4d51835] | 1746 | ; |
---|
[51b7345] | 1747 | |
---|
| 1748 | designator: |
---|
[c6b1105] | 1749 | // lexer ambiguity: designator ".0" is floating-point constant or designator for name 0 only ".0" and ".1" |
---|
| 1750 | // allowed => semantic check |
---|
[51b1202] | 1751 | FLOATINGconstant |
---|
| 1752 | { $$ = new DesignatorNode( new VarRefNode( $1 ) ); } |
---|
| 1753 | | '.' no_attr_identifier_or_type_name // C99, field name |
---|
| 1754 | { $$ = new DesignatorNode( new VarRefNode( $2 ) ); } |
---|
[4d51835] | 1755 | | '[' push assignment_expression pop ']' // C99, single array element |
---|
[de62360d] | 1756 | // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple. |
---|
[51b1202] | 1757 | { $$ = new DesignatorNode( $3, true ); } |
---|
[4d51835] | 1758 | | '[' push subrange pop ']' // CFA, multiple array elements |
---|
[51b1202] | 1759 | { $$ = new DesignatorNode( $3, true ); } |
---|
[4d51835] | 1760 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements |
---|
[51b1202] | 1761 | { $$ = new DesignatorNode( new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $3, $5 ), true ); } |
---|
[4d51835] | 1762 | | '.' '[' push field_list pop ']' // CFA, tuple field selector |
---|
[51b1202] | 1763 | { $$ = new DesignatorNode( $4 ); } |
---|
[4d51835] | 1764 | ; |
---|
[51b7345] | 1765 | |
---|
[de62360d] | 1766 | // The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters, |
---|
| 1767 | // rather than an object-oriented type system. This required four groups of extensions: |
---|
[c11e31c] | 1768 | // |
---|
| 1769 | // Overloading: function, data, and operator identifiers may be overloaded. |
---|
| 1770 | // |
---|
[de62360d] | 1771 | // Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object |
---|
| 1772 | // and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide |
---|
| 1773 | // definitions of new types. Type declarations with storage class "extern" provide opaque types. |
---|
[c11e31c] | 1774 | // |
---|
[de62360d] | 1775 | // Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call |
---|
| 1776 | // site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
[c11e31c] | 1777 | // |
---|
| 1778 | // Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
[de62360d] | 1779 | // types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass |
---|
| 1780 | // hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or |
---|
| 1781 | // types provide the operations declared by a specification. Assertions are normally used to declare requirements |
---|
| 1782 | // on type arguments of polymorphic functions. |
---|
[c11e31c] | 1783 | |
---|
[b87a5ed] | 1784 | typegen_declaration_specifier: // CFA |
---|
[4d51835] | 1785 | typegen_type_specifier |
---|
| 1786 | | declaration_qualifier_list typegen_type_specifier |
---|
| 1787 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1788 | | typegen_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1789 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1790 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
| 1791 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1792 | ; |
---|
[b87a5ed] | 1793 | |
---|
| 1794 | typegen_type_specifier: // CFA |
---|
[2871210] | 1795 | typegen_name |
---|
| 1796 | | type_qualifier_list typegen_name |
---|
| 1797 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 1798 | | typegen_type_specifier type_qualifier |
---|
| 1799 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1800 | ; |
---|
[b87a5ed] | 1801 | |
---|
[2871210] | 1802 | typegen_name: // CFA |
---|
| 1803 | TYPEGENname '(' type_name_list ')' |
---|
| 1804 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
| 1805 | ; |
---|
| 1806 | |
---|
[b87a5ed] | 1807 | type_parameter_list: // CFA |
---|
[4d51835] | 1808 | type_parameter assignment_opt |
---|
| 1809 | | type_parameter_list ',' type_parameter assignment_opt |
---|
| 1810 | { $$ = $1->appendList( $3 ); } |
---|
| 1811 | ; |
---|
[b87a5ed] | 1812 | |
---|
| 1813 | type_parameter: // CFA |
---|
[2871210] | 1814 | type_class no_attr_identifier_or_type_name |
---|
| 1815 | { typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); } |
---|
[4d51835] | 1816 | assertion_list_opt |
---|
| 1817 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
| 1818 | | type_specifier identifier_parameter_declarator |
---|
| 1819 | ; |
---|
[b87a5ed] | 1820 | |
---|
| 1821 | type_class: // CFA |
---|
[4040425] | 1822 | OTYPE |
---|
[4d51835] | 1823 | { $$ = DeclarationNode::Type; } |
---|
| 1824 | | DTYPE |
---|
| 1825 | { $$ = DeclarationNode::Ftype; } |
---|
| 1826 | | FTYPE |
---|
| 1827 | { $$ = DeclarationNode::Dtype; } |
---|
| 1828 | ; |
---|
[b87a5ed] | 1829 | |
---|
| 1830 | assertion_list_opt: // CFA |
---|
[4d51835] | 1831 | // empty |
---|
| 1832 | { $$ = 0; } |
---|
| 1833 | | assertion_list_opt assertion |
---|
| 1834 | { $$ = $1 == 0 ? $2 : $1->appendList( $2 ); } |
---|
| 1835 | ; |
---|
[b87a5ed] | 1836 | |
---|
| 1837 | assertion: // CFA |
---|
[2871210] | 1838 | '|' no_attr_identifier_or_type_name '(' type_name_list ')' |
---|
[4d51835] | 1839 | { |
---|
[4040425] | 1840 | typedefTable.openTrait( *$2 ); |
---|
| 1841 | $$ = DeclarationNode::newTraitUse( $2, $4 ); |
---|
[4d51835] | 1842 | } |
---|
[4040425] | 1843 | | '|' '{' push trait_declaration_list '}' |
---|
[4d51835] | 1844 | { $$ = $4; } |
---|
[4040425] | 1845 | | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list '}' '(' type_name_list ')' |
---|
[4d51835] | 1846 | { $$ = 0; } |
---|
| 1847 | ; |
---|
[b87a5ed] | 1848 | |
---|
| 1849 | type_name_list: // CFA |
---|
[4d51835] | 1850 | type_name |
---|
| 1851 | { $$ = new TypeValueNode( $1 ); } |
---|
| 1852 | | assignment_expression |
---|
| 1853 | | type_name_list ',' type_name |
---|
[de62360d] | 1854 | { $$ = (ExpressionNode *)( $1->set_link( new TypeValueNode( $3 ))); } |
---|
[4d51835] | 1855 | | type_name_list ',' assignment_expression |
---|
[de62360d] | 1856 | { $$ = (ExpressionNode *)( $1->set_link( $3 )); } |
---|
[4d51835] | 1857 | ; |
---|
[b87a5ed] | 1858 | |
---|
| 1859 | type_declaring_list: // CFA |
---|
[4040425] | 1860 | OTYPE type_declarator |
---|
[4d51835] | 1861 | { $$ = $2; } |
---|
[4040425] | 1862 | | storage_class_list OTYPE type_declarator |
---|
[4d51835] | 1863 | { $$ = $3->addQualifiers( $1 ); } |
---|
| 1864 | | type_declaring_list ',' type_declarator |
---|
| 1865 | { $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); } |
---|
| 1866 | ; |
---|
[b87a5ed] | 1867 | |
---|
| 1868 | type_declarator: // CFA |
---|
[4d51835] | 1869 | type_declarator_name assertion_list_opt |
---|
| 1870 | { $$ = $1->addAssertions( $2 ); } |
---|
| 1871 | | type_declarator_name assertion_list_opt '=' type_name |
---|
| 1872 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
| 1873 | ; |
---|
[b87a5ed] | 1874 | |
---|
| 1875 | type_declarator_name: // CFA |
---|
[2871210] | 1876 | no_attr_identifier_or_type_name |
---|
[4d51835] | 1877 | { |
---|
[de62360d] | 1878 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TD ); |
---|
[4d51835] | 1879 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
| 1880 | } |
---|
[2871210] | 1881 | | no_01_identifier_or_type_name '(' push type_parameter_list pop ')' |
---|
[4d51835] | 1882 | { |
---|
[de62360d] | 1883 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TG ); |
---|
[4d51835] | 1884 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
| 1885 | } |
---|
| 1886 | ; |
---|
[b87a5ed] | 1887 | |
---|
[4040425] | 1888 | trait_specifier: // CFA |
---|
| 1889 | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}' |
---|
[4d51835] | 1890 | { |
---|
[de62360d] | 1891 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 1892 | $$ = DeclarationNode::newTrait( $2, $5, 0 ); |
---|
[4d51835] | 1893 | } |
---|
[4040425] | 1894 | | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' |
---|
[4d51835] | 1895 | { |
---|
[4040425] | 1896 | typedefTable.enterTrait( *$2 ); |
---|
[4d51835] | 1897 | typedefTable.enterScope(); |
---|
| 1898 | } |
---|
[4040425] | 1899 | trait_declaration_list '}' |
---|
[4d51835] | 1900 | { |
---|
[4040425] | 1901 | typedefTable.leaveTrait(); |
---|
[de62360d] | 1902 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 1903 | $$ = DeclarationNode::newTrait( $2, $5, $10 ); |
---|
[4d51835] | 1904 | } |
---|
| 1905 | ; |
---|
[b87a5ed] | 1906 | |
---|
[4040425] | 1907 | trait_declaration_list: // CFA |
---|
| 1908 | trait_declaration |
---|
| 1909 | | trait_declaration_list push trait_declaration |
---|
[4d51835] | 1910 | { $$ = $1->appendList( $3 ); } |
---|
| 1911 | ; |
---|
[b87a5ed] | 1912 | |
---|
[4040425] | 1913 | trait_declaration: // CFA |
---|
| 1914 | new_trait_declaring_list pop ';' |
---|
| 1915 | | trait_declaring_list pop ';' |
---|
[4d51835] | 1916 | ; |
---|
[b87a5ed] | 1917 | |
---|
[4040425] | 1918 | new_trait_declaring_list: // CFA |
---|
[4d51835] | 1919 | new_variable_specifier |
---|
| 1920 | { |
---|
| 1921 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1922 | $$ = $1; |
---|
| 1923 | } |
---|
| 1924 | | new_function_specifier |
---|
| 1925 | { |
---|
| 1926 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1927 | $$ = $1; |
---|
| 1928 | } |
---|
[4040425] | 1929 | | new_trait_declaring_list pop ',' push identifier_or_type_name |
---|
[4d51835] | 1930 | { |
---|
[de62360d] | 1931 | typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID ); |
---|
[4d51835] | 1932 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1933 | } |
---|
| 1934 | ; |
---|
[b87a5ed] | 1935 | |
---|
[4040425] | 1936 | trait_declaring_list: // CFA |
---|
[4d51835] | 1937 | type_specifier declarator |
---|
| 1938 | { |
---|
| 1939 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1940 | $$ = $2->addType( $1 ); |
---|
| 1941 | } |
---|
[4040425] | 1942 | | trait_declaring_list pop ',' push declarator |
---|
[4d51835] | 1943 | { |
---|
| 1944 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1945 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
| 1946 | } |
---|
| 1947 | ; |
---|
[51b7345] | 1948 | |
---|
[c11e31c] | 1949 | //***************************** EXTERNAL DEFINITIONS ***************************** |
---|
[51b7345] | 1950 | |
---|
| 1951 | translation_unit: |
---|
[4d51835] | 1952 | // empty |
---|
| 1953 | {} // empty input file |
---|
| 1954 | | external_definition_list |
---|
| 1955 | { |
---|
| 1956 | if ( theTree ) { |
---|
| 1957 | theTree->appendList( $1 ); |
---|
| 1958 | } else { |
---|
| 1959 | theTree = $1; |
---|
| 1960 | } |
---|
| 1961 | } |
---|
| 1962 | ; |
---|
[51b7345] | 1963 | |
---|
| 1964 | external_definition_list: |
---|
[4d51835] | 1965 | external_definition |
---|
| 1966 | | external_definition_list push external_definition |
---|
[de62360d] | 1967 | { $$ = ( $1 != NULL ) ? $1->appendList( $3 ) : $3; } |
---|
[4d51835] | 1968 | ; |
---|
[51b7345] | 1969 | |
---|
| 1970 | external_definition_list_opt: |
---|
[4d51835] | 1971 | // empty |
---|
| 1972 | { $$ = 0; } |
---|
| 1973 | | external_definition_list |
---|
| 1974 | ; |
---|
[51b7345] | 1975 | |
---|
| 1976 | external_definition: |
---|
[4d51835] | 1977 | declaration |
---|
| 1978 | | external_function_definition |
---|
| 1979 | | asm_statement // GCC, global assembler statement |
---|
| 1980 | {} |
---|
| 1981 | | EXTERN STRINGliteral |
---|
| 1982 | { |
---|
| 1983 | linkageStack.push( linkage ); |
---|
| 1984 | linkage = LinkageSpec::fromString( *$2 ); |
---|
| 1985 | } |
---|
| 1986 | '{' external_definition_list_opt '}' // C++-style linkage specifier |
---|
| 1987 | { |
---|
| 1988 | linkage = linkageStack.top(); |
---|
| 1989 | linkageStack.pop(); |
---|
| 1990 | $$ = $5; |
---|
| 1991 | } |
---|
| 1992 | | EXTENSION external_definition |
---|
[e04ef3a] | 1993 | { $$ = $2/*->set_extension( true )*/; } |
---|
[4d51835] | 1994 | ; |
---|
| 1995 | |
---|
| 1996 | external_function_definition: |
---|
| 1997 | function_definition |
---|
[de62360d] | 1998 | // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of |
---|
[c6b1105] | 1999 | // legacy code with global functions missing the type-specifier for the return type, and assuming "int". |
---|
| 2000 | // Parsing is possible because function_definition does not appear in the context of an expression (nested |
---|
| 2001 | // functions preclude this concession, i.e., all nested function must have a return type). A function prototype |
---|
| 2002 | // declaration must still have a type_specifier. OBSOLESCENT (see 1) |
---|
[4d51835] | 2003 | | function_declarator compound_statement |
---|
| 2004 | { |
---|
| 2005 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2006 | typedefTable.leaveScope(); |
---|
| 2007 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2008 | } |
---|
| 2009 | | old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2010 | { |
---|
| 2011 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2012 | typedefTable.leaveScope(); |
---|
| 2013 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
| 2014 | } |
---|
| 2015 | ; |
---|
[51b7345] | 2016 | |
---|
| 2017 | function_definition: |
---|
[4d51835] | 2018 | new_function_declaration compound_statement // CFA |
---|
| 2019 | { |
---|
| 2020 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2021 | typedefTable.leaveScope(); |
---|
| 2022 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2023 | } |
---|
| 2024 | | declaration_specifier function_declarator compound_statement |
---|
| 2025 | { |
---|
| 2026 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2027 | typedefTable.leaveScope(); |
---|
| 2028 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
| 2029 | } |
---|
| 2030 | | type_qualifier_list function_declarator compound_statement |
---|
| 2031 | { |
---|
| 2032 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2033 | typedefTable.leaveScope(); |
---|
| 2034 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2035 | } |
---|
| 2036 | | declaration_qualifier_list function_declarator compound_statement |
---|
| 2037 | { |
---|
| 2038 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2039 | typedefTable.leaveScope(); |
---|
| 2040 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2041 | } |
---|
| 2042 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
| 2043 | { |
---|
| 2044 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2045 | typedefTable.leaveScope(); |
---|
| 2046 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2047 | } |
---|
| 2048 | |
---|
| 2049 | // Old-style K&R function definition, OBSOLESCENT (see 4) |
---|
| 2050 | | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2051 | { |
---|
| 2052 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2053 | typedefTable.leaveScope(); |
---|
| 2054 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
| 2055 | } |
---|
| 2056 | | type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2057 | { |
---|
| 2058 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2059 | typedefTable.leaveScope(); |
---|
| 2060 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2061 | } |
---|
| 2062 | |
---|
| 2063 | // Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) |
---|
| 2064 | | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2065 | { |
---|
| 2066 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2067 | typedefTable.leaveScope(); |
---|
| 2068 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2069 | } |
---|
| 2070 | | declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2071 | { |
---|
| 2072 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2073 | typedefTable.leaveScope(); |
---|
| 2074 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2075 | } |
---|
| 2076 | ; |
---|
[51b7345] | 2077 | |
---|
| 2078 | declarator: |
---|
[4d51835] | 2079 | variable_declarator |
---|
[c6b1105] | 2080 | | variable_type_redeclarator |
---|
[4d51835] | 2081 | | function_declarator |
---|
| 2082 | ; |
---|
[51b7345] | 2083 | |
---|
| 2084 | subrange: |
---|
[4d51835] | 2085 | constant_expression '~' constant_expression // CFA, integer subrange |
---|
[de62360d] | 2086 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); } |
---|
[4d51835] | 2087 | ; |
---|
[b87a5ed] | 2088 | |
---|
| 2089 | asm_name_opt: // GCC |
---|
[4d51835] | 2090 | // empty |
---|
| 2091 | | ASM '(' string_literal_list ')' attribute_list_opt |
---|
| 2092 | ; |
---|
[b87a5ed] | 2093 | |
---|
| 2094 | attribute_list_opt: // GCC |
---|
[4d51835] | 2095 | // empty |
---|
[1db21619] | 2096 | { $$ = 0; } |
---|
[4d51835] | 2097 | | attribute_list |
---|
| 2098 | ; |
---|
[b87a5ed] | 2099 | |
---|
| 2100 | attribute_list: // GCC |
---|
[4d51835] | 2101 | attribute |
---|
| 2102 | | attribute_list attribute |
---|
[1db21619] | 2103 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 2104 | ; |
---|
[b87a5ed] | 2105 | |
---|
| 2106 | attribute: // GCC |
---|
[4d51835] | 2107 | ATTRIBUTE '(' '(' attribute_parameter_list ')' ')' |
---|
[1db21619] | 2108 | // { $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
| 2109 | { $$ = 0; } |
---|
[4d51835] | 2110 | ; |
---|
[b87a5ed] | 2111 | |
---|
| 2112 | attribute_parameter_list: // GCC |
---|
[4d51835] | 2113 | attrib |
---|
| 2114 | | attribute_parameter_list ',' attrib |
---|
| 2115 | ; |
---|
[b87a5ed] | 2116 | |
---|
| 2117 | attrib: // GCC |
---|
[4d51835] | 2118 | // empty |
---|
| 2119 | | any_word |
---|
| 2120 | | any_word '(' comma_expression_opt ')' |
---|
| 2121 | ; |
---|
[b87a5ed] | 2122 | |
---|
| 2123 | any_word: // GCC |
---|
[2871210] | 2124 | identifier_or_type_name {} |
---|
[4d51835] | 2125 | | storage_class_name {} |
---|
| 2126 | | basic_type_name {} |
---|
| 2127 | | type_qualifier {} |
---|
| 2128 | ; |
---|
[51b7345] | 2129 | |
---|
[c11e31c] | 2130 | // ============================================================================ |
---|
[de62360d] | 2131 | // The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary |
---|
| 2132 | // because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as |
---|
| 2133 | // in: |
---|
[c11e31c] | 2134 | // |
---|
[b87a5ed] | 2135 | // int (*f())[10] { ... }; |
---|
| 2136 | // ... (*f())[3] += 1; // definition mimics usage |
---|
[c11e31c] | 2137 | // |
---|
[de62360d] | 2138 | // Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of |
---|
| 2139 | // the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context. |
---|
[c11e31c] | 2140 | // ============================================================================ |
---|
| 2141 | |
---|
| 2142 | // ---------------------------------------------------------------------------- |
---|
[de62360d] | 2143 | // The set of valid declarators before a compound statement for defining a function is less than the set of declarators |
---|
| 2144 | // to define a variable or function prototype, e.g.: |
---|
[c11e31c] | 2145 | // |
---|
[b87a5ed] | 2146 | // valid declaration invalid definition |
---|
| 2147 | // ----------------- ------------------ |
---|
[4d51835] | 2148 | // int f; int f {} |
---|
| 2149 | // int *f; int *f {} |
---|
[b87a5ed] | 2150 | // int f[10]; int f[10] {} |
---|
[4d51835] | 2151 | // int (*f)(int); int (*f)(int) {} |
---|
[c11e31c] | 2152 | // |
---|
[de62360d] | 2153 | // To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence |
---|
| 2154 | // variable_declarator and function_declarator. |
---|
[c11e31c] | 2155 | // ---------------------------------------------------------------------------- |
---|
| 2156 | |
---|
[de62360d] | 2157 | // This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes |
---|
| 2158 | // declaring an array of functions versus a pointer to an array of functions. |
---|
[51b7345] | 2159 | |
---|
| 2160 | variable_declarator: |
---|
[4d51835] | 2161 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2162 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2163 | | variable_ptr |
---|
| 2164 | | variable_array attribute_list_opt |
---|
[1db21619] | 2165 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2166 | | variable_function attribute_list_opt |
---|
[1db21619] | 2167 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2168 | ; |
---|
[51b7345] | 2169 | |
---|
| 2170 | paren_identifier: |
---|
[4d51835] | 2171 | identifier |
---|
| 2172 | { |
---|
[de62360d] | 2173 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2174 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2175 | } |
---|
| 2176 | | '(' paren_identifier ')' // redundant parenthesis |
---|
| 2177 | { $$ = $2; } |
---|
| 2178 | ; |
---|
[51b7345] | 2179 | |
---|
| 2180 | variable_ptr: |
---|
[dd51906] | 2181 | ptrref_operator variable_declarator |
---|
[4d51835] | 2182 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2183 | | ptrref_operator type_qualifier_list variable_declarator |
---|
[4d51835] | 2184 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2185 | | '(' variable_ptr ')' |
---|
| 2186 | { $$ = $2; } |
---|
| 2187 | ; |
---|
[51b7345] | 2188 | |
---|
| 2189 | variable_array: |
---|
[4d51835] | 2190 | paren_identifier array_dimension |
---|
| 2191 | { $$ = $1->addArray( $2 ); } |
---|
| 2192 | | '(' variable_ptr ')' array_dimension |
---|
| 2193 | { $$ = $2->addArray( $4 ); } |
---|
| 2194 | | '(' variable_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2195 | { $$ = $2->addArray( $4 ); } |
---|
| 2196 | | '(' variable_array ')' // redundant parenthesis |
---|
| 2197 | { $$ = $2; } |
---|
| 2198 | ; |
---|
[51b7345] | 2199 | |
---|
| 2200 | variable_function: |
---|
[4d51835] | 2201 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2202 | { $$ = $2->addParamList( $6 ); } |
---|
| 2203 | | '(' variable_function ')' // redundant parenthesis |
---|
| 2204 | { $$ = $2; } |
---|
| 2205 | ; |
---|
[51b7345] | 2206 | |
---|
[c6b1105] | 2207 | // This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is |
---|
| 2208 | // no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist |
---|
| 2209 | // is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2210 | |
---|
| 2211 | function_declarator: |
---|
[4d51835] | 2212 | function_no_ptr attribute_list_opt |
---|
[1db21619] | 2213 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2214 | | function_ptr |
---|
| 2215 | | function_array attribute_list_opt |
---|
[1db21619] | 2216 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2217 | ; |
---|
[51b7345] | 2218 | |
---|
| 2219 | function_no_ptr: |
---|
[4d51835] | 2220 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2221 | { $$ = $1->addParamList( $4 ); } |
---|
| 2222 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2223 | { $$ = $2->addParamList( $6 ); } |
---|
| 2224 | | '(' function_no_ptr ')' // redundant parenthesis |
---|
| 2225 | { $$ = $2; } |
---|
| 2226 | ; |
---|
[51b7345] | 2227 | |
---|
| 2228 | function_ptr: |
---|
[dd51906] | 2229 | ptrref_operator function_declarator |
---|
[4d51835] | 2230 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2231 | | ptrref_operator type_qualifier_list function_declarator |
---|
[4d51835] | 2232 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2233 | | '(' function_ptr ')' |
---|
| 2234 | { $$ = $2; } |
---|
| 2235 | ; |
---|
[51b7345] | 2236 | |
---|
| 2237 | function_array: |
---|
[4d51835] | 2238 | '(' function_ptr ')' array_dimension |
---|
| 2239 | { $$ = $2->addArray( $4 ); } |
---|
| 2240 | | '(' function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2241 | { $$ = $2->addArray( $4 ); } |
---|
| 2242 | | '(' function_array ')' // redundant parenthesis |
---|
| 2243 | { $$ = $2; } |
---|
| 2244 | ; |
---|
[51b7345] | 2245 | |
---|
[de62360d] | 2246 | // This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a typedef name |
---|
| 2247 | // (see function_declarator for additional comments). The pattern precludes returning arrays and functions versus |
---|
| 2248 | // pointers to arrays and functions. |
---|
[51b7345] | 2249 | |
---|
| 2250 | old_function_declarator: |
---|
[4d51835] | 2251 | old_function_no_ptr |
---|
| 2252 | | old_function_ptr |
---|
| 2253 | | old_function_array |
---|
| 2254 | ; |
---|
[51b7345] | 2255 | |
---|
| 2256 | old_function_no_ptr: |
---|
[4d51835] | 2257 | paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter |
---|
| 2258 | { $$ = $1->addIdList( $3 ); } |
---|
| 2259 | | '(' old_function_ptr ')' '(' identifier_list ')' |
---|
| 2260 | { $$ = $2->addIdList( $5 ); } |
---|
| 2261 | | '(' old_function_no_ptr ')' // redundant parenthesis |
---|
| 2262 | { $$ = $2; } |
---|
| 2263 | ; |
---|
[51b7345] | 2264 | |
---|
| 2265 | old_function_ptr: |
---|
[dd51906] | 2266 | ptrref_operator old_function_declarator |
---|
[4d51835] | 2267 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2268 | | ptrref_operator type_qualifier_list old_function_declarator |
---|
[4d51835] | 2269 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2270 | | '(' old_function_ptr ')' |
---|
| 2271 | { $$ = $2; } |
---|
| 2272 | ; |
---|
[51b7345] | 2273 | |
---|
| 2274 | old_function_array: |
---|
[4d51835] | 2275 | '(' old_function_ptr ')' array_dimension |
---|
| 2276 | { $$ = $2->addArray( $4 ); } |
---|
| 2277 | | '(' old_function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2278 | { $$ = $2->addArray( $4 ); } |
---|
| 2279 | | '(' old_function_array ')' // redundant parenthesis |
---|
| 2280 | { $$ = $2; } |
---|
| 2281 | ; |
---|
[51b7345] | 2282 | |
---|
[2871210] | 2283 | // This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.: |
---|
[c11e31c] | 2284 | // |
---|
[b87a5ed] | 2285 | // typedef int foo; |
---|
| 2286 | // { |
---|
| 2287 | // int foo; // redefine typedef name in new scope |
---|
| 2288 | // } |
---|
[c11e31c] | 2289 | // |
---|
[de62360d] | 2290 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2291 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2292 | |
---|
[c6b1105] | 2293 | variable_type_redeclarator: |
---|
[2871210] | 2294 | paren_type attribute_list_opt |
---|
[1db21619] | 2295 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2296 | | type_ptr |
---|
| 2297 | | type_array attribute_list_opt |
---|
[1db21619] | 2298 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2299 | | type_function attribute_list_opt |
---|
[1db21619] | 2300 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2301 | ; |
---|
[51b7345] | 2302 | |
---|
[2871210] | 2303 | paren_type: |
---|
| 2304 | typedef |
---|
| 2305 | | '(' paren_type ')' |
---|
[4d51835] | 2306 | { $$ = $2; } |
---|
| 2307 | ; |
---|
[51b7345] | 2308 | |
---|
[2871210] | 2309 | type_ptr: |
---|
[c6b1105] | 2310 | ptrref_operator variable_type_redeclarator |
---|
[4d51835] | 2311 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c6b1105] | 2312 | | ptrref_operator type_qualifier_list variable_type_redeclarator |
---|
[4d51835] | 2313 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2314 | | '(' type_ptr ')' |
---|
[4d51835] | 2315 | { $$ = $2; } |
---|
| 2316 | ; |
---|
[51b7345] | 2317 | |
---|
[2871210] | 2318 | type_array: |
---|
| 2319 | paren_type array_dimension |
---|
[4d51835] | 2320 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2321 | | '(' type_ptr ')' array_dimension |
---|
[4d51835] | 2322 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2323 | | '(' type_array ')' multi_array_dimension // redundant parenthesis |
---|
[4d51835] | 2324 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2325 | | '(' type_array ')' // redundant parenthesis |
---|
[4d51835] | 2326 | { $$ = $2; } |
---|
| 2327 | ; |
---|
[51b7345] | 2328 | |
---|
[2871210] | 2329 | type_function: |
---|
| 2330 | paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2331 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2332 | | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2333 | { $$ = $2->addParamList( $6 ); } |
---|
[2871210] | 2334 | | '(' type_function ')' // redundant parenthesis |
---|
[4d51835] | 2335 | { $$ = $2; } |
---|
| 2336 | ; |
---|
[51b7345] | 2337 | |
---|
[de62360d] | 2338 | // This pattern parses a declaration for a parameter variable or function prototype that is not redefining a typedef |
---|
| 2339 | // name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes declaring an |
---|
| 2340 | // array of functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to |
---|
| 2341 | // arrays and functions. |
---|
[51b7345] | 2342 | |
---|
| 2343 | identifier_parameter_declarator: |
---|
[4d51835] | 2344 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2345 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2346 | | identifier_parameter_ptr |
---|
| 2347 | | identifier_parameter_array attribute_list_opt |
---|
[1db21619] | 2348 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2349 | | identifier_parameter_function attribute_list_opt |
---|
[1db21619] | 2350 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2351 | ; |
---|
[51b7345] | 2352 | |
---|
| 2353 | identifier_parameter_ptr: |
---|
[dd51906] | 2354 | ptrref_operator identifier_parameter_declarator |
---|
[4d51835] | 2355 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2356 | | ptrref_operator type_qualifier_list identifier_parameter_declarator |
---|
[4d51835] | 2357 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2358 | | '(' identifier_parameter_ptr ')' |
---|
| 2359 | { $$ = $2; } |
---|
| 2360 | ; |
---|
[51b7345] | 2361 | |
---|
| 2362 | identifier_parameter_array: |
---|
[4d51835] | 2363 | paren_identifier array_parameter_dimension |
---|
| 2364 | { $$ = $1->addArray( $2 ); } |
---|
| 2365 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
| 2366 | { $$ = $2->addArray( $4 ); } |
---|
| 2367 | | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2368 | { $$ = $2->addArray( $4 ); } |
---|
| 2369 | | '(' identifier_parameter_array ')' // redundant parenthesis |
---|
| 2370 | { $$ = $2; } |
---|
| 2371 | ; |
---|
[51b7345] | 2372 | |
---|
| 2373 | identifier_parameter_function: |
---|
[4d51835] | 2374 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2375 | { $$ = $1->addParamList( $4 ); } |
---|
| 2376 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2377 | { $$ = $2->addParamList( $6 ); } |
---|
| 2378 | | '(' identifier_parameter_function ')' // redundant parenthesis |
---|
| 2379 | { $$ = $2; } |
---|
| 2380 | ; |
---|
[b87a5ed] | 2381 | |
---|
[de62360d] | 2382 | // This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name, |
---|
| 2383 | // e.g.: |
---|
[c11e31c] | 2384 | // |
---|
[b87a5ed] | 2385 | // typedef int foo; |
---|
| 2386 | // int f( int foo ); // redefine typedef name in new scope |
---|
[c11e31c] | 2387 | // |
---|
[de62360d] | 2388 | // and allows the C99 array options, which can only appear in a parameter list. In addition, the pattern handles the |
---|
| 2389 | // special meaning of parenthesis around a typedef name: |
---|
[c11e31c] | 2390 | // |
---|
[b87a5ed] | 2391 | // ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
| 2392 | // parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
| 2393 | // not as redundant parentheses around the identifier." |
---|
[c11e31c] | 2394 | // |
---|
[c6b1105] | 2395 | // For example: |
---|
[c11e31c] | 2396 | // |
---|
[b87a5ed] | 2397 | // typedef float T; |
---|
[4d51835] | 2398 | // int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
[b87a5ed] | 2399 | // int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
| 2400 | // int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
| 2401 | // int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
[c11e31c] | 2402 | // |
---|
[de62360d] | 2403 | // In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and |
---|
| 2404 | // not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of |
---|
| 2405 | // functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and |
---|
| 2406 | // functions. |
---|
[51b7345] | 2407 | |
---|
[2871210] | 2408 | type_parameter_redeclarator: |
---|
[4d51835] | 2409 | typedef attribute_list_opt |
---|
[1db21619] | 2410 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2411 | | type_parameter_ptr |
---|
| 2412 | | type_parameter_array attribute_list_opt |
---|
[1db21619] | 2413 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2414 | | type_parameter_function attribute_list_opt |
---|
[1db21619] | 2415 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2416 | ; |
---|
[51b7345] | 2417 | |
---|
| 2418 | typedef: |
---|
[4d51835] | 2419 | TYPEDEFname |
---|
| 2420 | { |
---|
[de62360d] | 2421 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2422 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2423 | } |
---|
[2871210] | 2424 | | TYPEGENname |
---|
| 2425 | { |
---|
| 2426 | typedefTable.setNextIdentifier( *$1 ); |
---|
| 2427 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2428 | } |
---|
[4d51835] | 2429 | ; |
---|
[51b7345] | 2430 | |
---|
[2871210] | 2431 | type_parameter_ptr: |
---|
[dd51906] | 2432 | ptrref_operator type_parameter_redeclarator |
---|
[4d51835] | 2433 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2434 | | ptrref_operator type_qualifier_list type_parameter_redeclarator |
---|
[4d51835] | 2435 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2436 | | '(' type_parameter_ptr ')' |
---|
[4d51835] | 2437 | { $$ = $2; } |
---|
| 2438 | ; |
---|
[51b7345] | 2439 | |
---|
[2871210] | 2440 | type_parameter_array: |
---|
[4d51835] | 2441 | typedef array_parameter_dimension |
---|
| 2442 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2443 | | '(' type_parameter_ptr ')' array_parameter_dimension |
---|
[4d51835] | 2444 | { $$ = $2->addArray( $4 ); } |
---|
| 2445 | ; |
---|
[51b7345] | 2446 | |
---|
[2871210] | 2447 | type_parameter_function: |
---|
[4d51835] | 2448 | typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2449 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2450 | | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2451 | { $$ = $2->addParamList( $6 ); } |
---|
| 2452 | ; |
---|
[b87a5ed] | 2453 | |
---|
[de62360d] | 2454 | // This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to |
---|
| 2455 | // which the type applies, e.g.: |
---|
[c11e31c] | 2456 | // |
---|
[b87a5ed] | 2457 | // sizeof( int ); |
---|
| 2458 | // sizeof( int [10] ); |
---|
[c11e31c] | 2459 | // |
---|
[de62360d] | 2460 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2461 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2462 | |
---|
| 2463 | abstract_declarator: |
---|
[4d51835] | 2464 | abstract_ptr |
---|
| 2465 | | abstract_array attribute_list_opt |
---|
[1db21619] | 2466 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2467 | | abstract_function attribute_list_opt |
---|
[1db21619] | 2468 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2469 | ; |
---|
[51b7345] | 2470 | |
---|
| 2471 | abstract_ptr: |
---|
[dd51906] | 2472 | ptrref_operator |
---|
[4d51835] | 2473 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2474 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2475 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2476 | | ptrref_operator abstract_declarator |
---|
[4d51835] | 2477 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2478 | | ptrref_operator type_qualifier_list abstract_declarator |
---|
[4d51835] | 2479 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2480 | | '(' abstract_ptr ')' |
---|
| 2481 | { $$ = $2; } |
---|
| 2482 | ; |
---|
[51b7345] | 2483 | |
---|
| 2484 | abstract_array: |
---|
[4d51835] | 2485 | array_dimension |
---|
| 2486 | | '(' abstract_ptr ')' array_dimension |
---|
| 2487 | { $$ = $2->addArray( $4 ); } |
---|
| 2488 | | '(' abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2489 | { $$ = $2->addArray( $4 ); } |
---|
| 2490 | | '(' abstract_array ')' // redundant parenthesis |
---|
| 2491 | { $$ = $2; } |
---|
| 2492 | ; |
---|
[51b7345] | 2493 | |
---|
| 2494 | abstract_function: |
---|
[4d51835] | 2495 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2496 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2497 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2498 | { $$ = $2->addParamList( $6 ); } |
---|
| 2499 | | '(' abstract_function ')' // redundant parenthesis |
---|
| 2500 | { $$ = $2; } |
---|
| 2501 | ; |
---|
[51b7345] | 2502 | |
---|
| 2503 | array_dimension: |
---|
[4d51835] | 2504 | // Only the first dimension can be empty. |
---|
[2871210] | 2505 | '[' ']' |
---|
[4d51835] | 2506 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
[2871210] | 2507 | | '[' ']' multi_array_dimension |
---|
| 2508 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); } |
---|
[4d51835] | 2509 | | multi_array_dimension |
---|
| 2510 | ; |
---|
[51b7345] | 2511 | |
---|
| 2512 | multi_array_dimension: |
---|
[4d51835] | 2513 | '[' push assignment_expression pop ']' |
---|
| 2514 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
| 2515 | | '[' push '*' pop ']' // C99 |
---|
| 2516 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
| 2517 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
| 2518 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
| 2519 | | multi_array_dimension '[' push '*' pop ']' // C99 |
---|
| 2520 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
| 2521 | ; |
---|
[51b7345] | 2522 | |
---|
[c11e31c] | 2523 | // This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
| 2524 | // identifier to which the type applies, e.g.: |
---|
| 2525 | // |
---|
[b87a5ed] | 2526 | // int f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2527 | // int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2528 | // |
---|
[de62360d] | 2529 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2530 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2531 | |
---|
| 2532 | abstract_parameter_declarator: |
---|
[4d51835] | 2533 | abstract_parameter_ptr |
---|
| 2534 | | abstract_parameter_array attribute_list_opt |
---|
[1db21619] | 2535 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2536 | | abstract_parameter_function attribute_list_opt |
---|
[1db21619] | 2537 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2538 | ; |
---|
[51b7345] | 2539 | |
---|
| 2540 | abstract_parameter_ptr: |
---|
[dd51906] | 2541 | ptrref_operator |
---|
[4d51835] | 2542 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2543 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2544 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2545 | | ptrref_operator abstract_parameter_declarator |
---|
[4d51835] | 2546 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2547 | | ptrref_operator type_qualifier_list abstract_parameter_declarator |
---|
[4d51835] | 2548 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2549 | | '(' abstract_parameter_ptr ')' |
---|
| 2550 | { $$ = $2; } |
---|
| 2551 | ; |
---|
[51b7345] | 2552 | |
---|
| 2553 | abstract_parameter_array: |
---|
[4d51835] | 2554 | array_parameter_dimension |
---|
| 2555 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
| 2556 | { $$ = $2->addArray( $4 ); } |
---|
| 2557 | | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2558 | { $$ = $2->addArray( $4 ); } |
---|
| 2559 | | '(' abstract_parameter_array ')' // redundant parenthesis |
---|
| 2560 | { $$ = $2; } |
---|
| 2561 | ; |
---|
[51b7345] | 2562 | |
---|
| 2563 | abstract_parameter_function: |
---|
[4d51835] | 2564 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2565 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2566 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2567 | { $$ = $2->addParamList( $6 ); } |
---|
| 2568 | | '(' abstract_parameter_function ')' // redundant parenthesis |
---|
| 2569 | { $$ = $2; } |
---|
| 2570 | ; |
---|
[51b7345] | 2571 | |
---|
| 2572 | array_parameter_dimension: |
---|
[4d51835] | 2573 | // Only the first dimension can be empty or have qualifiers. |
---|
| 2574 | array_parameter_1st_dimension |
---|
| 2575 | | array_parameter_1st_dimension multi_array_dimension |
---|
| 2576 | { $$ = $1->addArray( $2 ); } |
---|
| 2577 | | multi_array_dimension |
---|
| 2578 | ; |
---|
[51b7345] | 2579 | |
---|
[c11e31c] | 2580 | // The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
| 2581 | // |
---|
[de62360d] | 2582 | // ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in |
---|
| 2583 | // a declaration of a function parameter with an array type, and then only in the outermost array type derivation." |
---|
[51b7345] | 2584 | |
---|
| 2585 | array_parameter_1st_dimension: |
---|
[2871210] | 2586 | '[' ']' |
---|
[4d51835] | 2587 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
| 2588 | // multi_array_dimension handles the '[' '*' ']' case |
---|
| 2589 | | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2590 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2591 | | '[' push type_qualifier_list pop ']' |
---|
| 2592 | { $$ = DeclarationNode::newArray( 0, $3, false ); } |
---|
| 2593 | // multi_array_dimension handles the '[' assignment_expression ']' case |
---|
| 2594 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2595 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2596 | | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']' |
---|
| 2597 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
| 2598 | | '[' push type_qualifier_list STATIC assignment_expression pop ']' |
---|
| 2599 | { $$ = DeclarationNode::newArray( $5, $3, true ); } |
---|
| 2600 | ; |
---|
[b87a5ed] | 2601 | |
---|
[de62360d] | 2602 | // This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type applies, |
---|
| 2603 | // e.g.: |
---|
[c11e31c] | 2604 | // |
---|
[b87a5ed] | 2605 | // sizeof( int ); // abstract variable; no identifier name specified |
---|
[c11e31c] | 2606 | // |
---|
[de62360d] | 2607 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2608 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2609 | |
---|
| 2610 | variable_abstract_declarator: |
---|
[4d51835] | 2611 | variable_abstract_ptr |
---|
| 2612 | | variable_abstract_array attribute_list_opt |
---|
[1db21619] | 2613 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2614 | | variable_abstract_function attribute_list_opt |
---|
[1db21619] | 2615 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2616 | ; |
---|
[51b7345] | 2617 | |
---|
| 2618 | variable_abstract_ptr: |
---|
[dd51906] | 2619 | ptrref_operator |
---|
[4d51835] | 2620 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2621 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2622 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2623 | | ptrref_operator variable_abstract_declarator |
---|
[4d51835] | 2624 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2625 | | ptrref_operator type_qualifier_list variable_abstract_declarator |
---|
[4d51835] | 2626 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2627 | | '(' variable_abstract_ptr ')' |
---|
| 2628 | { $$ = $2; } |
---|
| 2629 | ; |
---|
[51b7345] | 2630 | |
---|
| 2631 | variable_abstract_array: |
---|
[4d51835] | 2632 | array_dimension |
---|
| 2633 | | '(' variable_abstract_ptr ')' array_dimension |
---|
| 2634 | { $$ = $2->addArray( $4 ); } |
---|
| 2635 | | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2636 | { $$ = $2->addArray( $4 ); } |
---|
| 2637 | | '(' variable_abstract_array ')' // redundant parenthesis |
---|
| 2638 | { $$ = $2; } |
---|
| 2639 | ; |
---|
[51b7345] | 2640 | |
---|
| 2641 | variable_abstract_function: |
---|
[4d51835] | 2642 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2643 | { $$ = $2->addParamList( $6 ); } |
---|
| 2644 | | '(' variable_abstract_function ')' // redundant parenthesis |
---|
| 2645 | { $$ = $2; } |
---|
| 2646 | ; |
---|
[b87a5ed] | 2647 | |
---|
[de62360d] | 2648 | // This pattern parses a new-style declaration for a parameter variable or function prototype that is either an |
---|
| 2649 | // identifier or typedef name and allows the C99 array options, which can only appear in a parameter list. |
---|
[b87a5ed] | 2650 | |
---|
| 2651 | new_identifier_parameter_declarator_tuple: // CFA |
---|
[4d51835] | 2652 | new_identifier_parameter_declarator_no_tuple |
---|
| 2653 | | new_abstract_tuple |
---|
| 2654 | | type_qualifier_list new_abstract_tuple |
---|
| 2655 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2656 | ; |
---|
[b87a5ed] | 2657 | |
---|
| 2658 | new_identifier_parameter_declarator_no_tuple: // CFA |
---|
[4d51835] | 2659 | new_identifier_parameter_ptr |
---|
| 2660 | | new_identifier_parameter_array |
---|
| 2661 | ; |
---|
[b87a5ed] | 2662 | |
---|
| 2663 | new_identifier_parameter_ptr: // CFA |
---|
[dd51906] | 2664 | ptrref_operator type_specifier |
---|
[4d51835] | 2665 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2666 | | type_qualifier_list ptrref_operator type_specifier |
---|
[4d51835] | 2667 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2668 | | ptrref_operator new_abstract_function |
---|
[4d51835] | 2669 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2670 | | type_qualifier_list ptrref_operator new_abstract_function |
---|
[4d51835] | 2671 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2672 | | ptrref_operator new_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2673 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2674 | | type_qualifier_list ptrref_operator new_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2675 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2676 | ; |
---|
[b87a5ed] | 2677 | |
---|
| 2678 | new_identifier_parameter_array: // CFA |
---|
[de62360d] | 2679 | // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to |
---|
| 2680 | // shift/reduce conflict with new-style empty (void) function return type. |
---|
[2871210] | 2681 | '[' ']' type_specifier |
---|
| 2682 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2683 | | new_array_parameter_1st_dimension type_specifier |
---|
| 2684 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2685 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2686 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2687 | | new_array_parameter_1st_dimension multi_array_dimension type_specifier |
---|
| 2688 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2689 | | multi_array_dimension type_specifier |
---|
| 2690 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2691 | | '[' ']' new_identifier_parameter_ptr |
---|
| 2692 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2693 | | new_array_parameter_1st_dimension new_identifier_parameter_ptr |
---|
| 2694 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2695 | | '[' ']' multi_array_dimension new_identifier_parameter_ptr |
---|
| 2696 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2697 | | new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr |
---|
| 2698 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2699 | | multi_array_dimension new_identifier_parameter_ptr |
---|
| 2700 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2701 | ; |
---|
[51b7345] | 2702 | |
---|
| 2703 | new_array_parameter_1st_dimension: |
---|
[4d51835] | 2704 | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2705 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2706 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2707 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2708 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
| 2709 | // declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
| 2710 | // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot |
---|
| 2711 | // appear in this context. |
---|
| 2712 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
| 2713 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
| 2714 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
| 2715 | ; |
---|
[b87a5ed] | 2716 | |
---|
[de62360d] | 2717 | // This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no |
---|
| 2718 | // identifier to which the type applies, e.g.: |
---|
[c11e31c] | 2719 | // |
---|
[b87a5ed] | 2720 | // [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2721 | // [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2722 | // |
---|
| 2723 | // These rules need LR(3): |
---|
| 2724 | // |
---|
[2871210] | 2725 | // new_abstract_tuple identifier_or_type_name |
---|
| 2726 | // '[' new_parameter_list ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[c11e31c] | 2727 | // |
---|
| 2728 | // since a function return type can be syntactically identical to a tuple type: |
---|
| 2729 | // |
---|
[b87a5ed] | 2730 | // [int, int] t; |
---|
| 2731 | // [int, int] f( int ); |
---|
[c11e31c] | 2732 | // |
---|
[2871210] | 2733 | // Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce |
---|
[de62360d] | 2734 | // new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary |
---|
| 2735 | // lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and tuple declarations are |
---|
| 2736 | // duplicated when appearing with new_function_specifier. |
---|
[b87a5ed] | 2737 | |
---|
| 2738 | new_abstract_declarator_tuple: // CFA |
---|
[4d51835] | 2739 | new_abstract_tuple |
---|
| 2740 | | type_qualifier_list new_abstract_tuple |
---|
| 2741 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2742 | | new_abstract_declarator_no_tuple |
---|
| 2743 | ; |
---|
[b87a5ed] | 2744 | |
---|
| 2745 | new_abstract_declarator_no_tuple: // CFA |
---|
[4d51835] | 2746 | new_abstract_ptr |
---|
| 2747 | | new_abstract_array |
---|
| 2748 | ; |
---|
[b87a5ed] | 2749 | |
---|
| 2750 | new_abstract_ptr: // CFA |
---|
[dd51906] | 2751 | ptrref_operator type_specifier |
---|
[4d51835] | 2752 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2753 | | type_qualifier_list ptrref_operator type_specifier |
---|
[4d51835] | 2754 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2755 | | ptrref_operator new_abstract_function |
---|
[4d51835] | 2756 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2757 | | type_qualifier_list ptrref_operator new_abstract_function |
---|
[4d51835] | 2758 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[dd51906] | 2759 | | ptrref_operator new_abstract_declarator_tuple |
---|
[4d51835] | 2760 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2761 | | type_qualifier_list ptrref_operator new_abstract_declarator_tuple |
---|
[4d51835] | 2762 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2763 | ; |
---|
[b87a5ed] | 2764 | |
---|
| 2765 | new_abstract_array: // CFA |
---|
[de62360d] | 2766 | // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with |
---|
| 2767 | // empty (void) function return type. |
---|
[2871210] | 2768 | '[' ']' type_specifier |
---|
| 2769 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2770 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2771 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2772 | | multi_array_dimension type_specifier |
---|
| 2773 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2774 | | '[' ']' new_abstract_ptr |
---|
| 2775 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2776 | | '[' ']' multi_array_dimension new_abstract_ptr |
---|
| 2777 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2778 | | multi_array_dimension new_abstract_ptr |
---|
| 2779 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2780 | ; |
---|
[b87a5ed] | 2781 | |
---|
| 2782 | new_abstract_tuple: // CFA |
---|
[4d51835] | 2783 | '[' push new_abstract_parameter_list pop ']' |
---|
| 2784 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 2785 | ; |
---|
[b87a5ed] | 2786 | |
---|
| 2787 | new_abstract_function: // CFA |
---|
[2871210] | 2788 | '[' ']' '(' new_parameter_type_list_opt ')' |
---|
| 2789 | { $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $4, 0 ); } |
---|
[4d51835] | 2790 | | new_abstract_tuple '(' push new_parameter_type_list_opt pop ')' |
---|
| 2791 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2792 | | new_function_return '(' push new_parameter_type_list_opt pop ')' |
---|
| 2793 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2794 | ; |
---|
[b87a5ed] | 2795 | |
---|
[de62360d] | 2796 | // 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in |
---|
| 2797 | // each declaration, and in the specifier-qualifier list in each structure declaration and type name." |
---|
[c11e31c] | 2798 | // |
---|
[de62360d] | 2799 | // 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of |
---|
| 2800 | // the declaration specifiers in a declaration is an obsolescent feature." |
---|
[c11e31c] | 2801 | // |
---|
| 2802 | // 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
---|
| 2803 | // prototype-format parameter type declarators) is an obsolescent feature." |
---|
| 2804 | // |
---|
[de62360d] | 2805 | // 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and |
---|
| 2806 | // declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature. |
---|
[51b7345] | 2807 | |
---|
[c11e31c] | 2808 | //************************* MISCELLANEOUS ******************************** |
---|
[51b7345] | 2809 | |
---|
[b87a5ed] | 2810 | comma_opt: // redundant comma |
---|
[4d51835] | 2811 | // empty |
---|
| 2812 | | ',' |
---|
| 2813 | ; |
---|
[51b7345] | 2814 | |
---|
| 2815 | assignment_opt: |
---|
[4d51835] | 2816 | // empty |
---|
| 2817 | { $$ = 0; } |
---|
| 2818 | | '=' assignment_expression |
---|
| 2819 | { $$ = $2; } |
---|
| 2820 | ; |
---|
[51b7345] | 2821 | |
---|
| 2822 | %% |
---|
[c11e31c] | 2823 | // ----end of grammar---- |
---|
[51b7345] | 2824 | |
---|
[5f2f2d7] | 2825 | void yyerror( const char * ) { |
---|
| 2826 | std::cout << "Error "; |
---|
[b87a5ed] | 2827 | if ( yyfilename ) { |
---|
[45161b4d] | 2828 | std::cout << "in file " << yyfilename << " "; |
---|
[5f2f2d7] | 2829 | } // if |
---|
[b1d6dd5] | 2830 | std::cout << "at line " << yylineno << " reading token \"" << (yytext[0] == '\0' ? "EOF" : yytext) << "\"" << std::endl; |
---|
[51b7345] | 2831 | } |
---|
| 2832 | |
---|
[c11e31c] | 2833 | // Local Variables: // |
---|
[b87a5ed] | 2834 | // mode: c++ // |
---|
[de62360d] | 2835 | // tab-width: 4 // |
---|
[c11e31c] | 2836 | // compile-command: "make install" // |
---|
| 2837 | // End: // |
---|