[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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[c11e31c] | 7 | // cfa.y -- |
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| 8 | // |
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| 9 | // Author : Peter A. Buhr |
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| 10 | // Created On : Sat Sep 1 20:22:55 2001 |
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| 11 | // Last Modified By : Peter A. Buhr |
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[1db21619] | 12 | // Last Modified On : Thu Jul 16 16:25:12 2015 |
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| 13 | // Update Count : 1267 |
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[c11e31c] | 14 | // |
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| 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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| 33 | // 1. nested functions |
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| 34 | // 2. generalized lvalues |
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| 35 | // 3. designation with and without '=' (use ':' instead) |
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| 36 | // 4. attributes not allowed in parenthesis of declarator |
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| 37 | // |
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[de62360d] | 38 | // All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall |
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| 39 | // (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the |
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| 40 | // syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable |
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| 41 | // parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation" |
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| 42 | // grammar rule. |
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[51b7345] | 43 | |
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| 44 | %{ |
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[b87a5ed] | 45 | #define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time |
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| 46 | #define YYDEBUG 1 // get the pretty debugging code to compile |
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[8a95629] | 47 | extern char *yytext; |
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[51b7345] | 48 | |
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| 49 | #undef __GNUC_MINOR__ |
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| 50 | |
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| 51 | #include <cstdio> |
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| 52 | #include <stack> |
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| 53 | #include "TypedefTable.h" |
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| 54 | #include "lex.h" |
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| 55 | #include "ParseNode.h" |
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[1db21619] | 56 | #include "TypeData.h" |
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[51b7345] | 57 | #include "LinkageSpec.h" |
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| 58 | |
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[b87a5ed] | 59 | DeclarationNode *theTree = 0; // the resulting parse tree |
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[51b7345] | 60 | LinkageSpec::Type linkage = LinkageSpec::Cforall; |
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| 61 | std::stack< LinkageSpec::Type > linkageStack; |
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| 62 | TypedefTable typedefTable; |
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| 63 | %} |
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| 64 | |
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[c11e31c] | 65 | //************************* TERMINAL TOKENS ******************************** |
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[51b7345] | 66 | |
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[c11e31c] | 67 | // keywords |
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[51b7345] | 68 | %token TYPEDEF |
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| 69 | %token AUTO EXTERN REGISTER STATIC |
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[b87a5ed] | 70 | %token INLINE // C99 |
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| 71 | %token FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1) |
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[51b7345] | 72 | %token CONST VOLATILE |
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[b87a5ed] | 73 | %token RESTRICT // C99 |
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| 74 | %token FORALL LVALUE // CFA |
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[51b7345] | 75 | %token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED |
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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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[b87a5ed] | 79 | %token TYPE FTYPE DTYPE CONTEXT // CFA |
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[51b7345] | 80 | %token SIZEOF |
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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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[b87a5ed] | 83 | %token CHOOSE FALLTHRU TRY CATCH FINALLY THROW // CFA |
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| 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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[c11e31c] | 106 | // Types declaration |
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[51b7345] | 107 | %union |
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| 108 | { |
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[b87a5ed] | 109 | Token tok; |
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| 110 | ParseNode *pn; |
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| 111 | ExpressionNode *en; |
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| 112 | DeclarationNode *decl; |
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[68cd1ce] | 113 | DeclarationNode::Aggregate aggKey; |
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[b87a5ed] | 114 | DeclarationNode::TypeClass tclass; |
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| 115 | StatementNode *sn; |
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| 116 | ConstantNode *constant; |
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| 117 | InitializerNode *in; |
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[51b7345] | 118 | } |
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| 119 | |
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| 120 | %type<tok> zero_one identifier no_attr_identifier no_01_identifier |
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[2871210] | 121 | %type<tok> identifier_or_type_name no_attr_identifier_or_type_name no_01_identifier_or_type_name |
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[51b7345] | 122 | %type<constant> string_literal_list |
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| 123 | |
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[c11e31c] | 124 | // expressions |
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[51b7345] | 125 | %type<constant> constant |
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[b87a5ed] | 126 | %type<en> tuple tuple_expression_list |
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| 127 | %type<en> unary_operator assignment_operator |
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| 128 | %type<en> primary_expression postfix_expression unary_expression |
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| 129 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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| 130 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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| 131 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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| 132 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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| 133 | %type<en> comma_expression comma_expression_opt |
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| 134 | %type<en> argument_expression_list argument_expression for_control_expression assignment_opt |
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[51b7345] | 135 | %type<en> subrange |
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| 136 | |
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[c11e31c] | 137 | // statements |
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[b87a5ed] | 138 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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| 139 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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| 140 | %type<sn> fall_through_opt fall_through |
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| 141 | %type<sn> statement statement_list |
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| 142 | %type<sn> block_item_list block_item |
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[51b7345] | 143 | %type<sn> case_clause |
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[b87a5ed] | 144 | %type<en> case_value case_value_list |
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| 145 | %type<sn> case_label case_label_list |
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| 146 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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| 147 | %type<pn> handler_list handler_clause finally_clause |
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[51b7345] | 148 | |
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[c11e31c] | 149 | // declarations |
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[51b7345] | 150 | %type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array |
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| 151 | %type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function |
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| 152 | %type<decl> abstract_parameter_ptr abstract_ptr |
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| 153 | |
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| 154 | %type<aggKey> aggregate_key |
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| 155 | %type<decl> aggregate_name |
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| 156 | |
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| 157 | %type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension |
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| 158 | |
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| 159 | %type<decl> assertion assertion_list_opt |
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| 160 | |
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| 161 | %type<en> bit_subrange_size_opt bit_subrange_size |
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| 162 | |
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| 163 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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| 164 | |
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| 165 | %type<decl> context_declaration context_declaration_list context_declaring_list context_specifier |
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| 166 | |
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| 167 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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| 168 | %type<decl> declaration_specifier declarator declaring_list |
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| 169 | |
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| 170 | %type<decl> elaborated_type_name |
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| 171 | |
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| 172 | %type<decl> enumerator_list enum_name |
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| 173 | %type<en> enumerator_value_opt |
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| 174 | |
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| 175 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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| 176 | |
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| 177 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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| 178 | %type<en> field field_list |
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| 179 | |
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[4d51835] | 180 | %type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr |
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[51b7345] | 181 | |
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| 182 | %type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function |
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| 183 | %type<decl> identifier_parameter_ptr identifier_list |
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| 184 | |
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| 185 | %type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple |
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| 186 | %type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list |
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| 187 | %type<decl> new_abstract_ptr new_abstract_tuple |
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| 188 | |
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| 189 | %type<decl> new_array_parameter_1st_dimension |
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| 190 | |
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| 191 | %type<decl> new_context_declaring_list new_declaration new_field_declaring_list |
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| 192 | %type<decl> new_function_declaration new_function_return new_function_specifier |
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| 193 | |
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| 194 | %type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple |
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| 195 | %type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr |
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| 196 | |
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| 197 | %type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt |
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| 198 | |
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| 199 | %type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier |
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| 200 | |
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| 201 | %type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array |
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| 202 | %type<decl> old_function_declarator old_function_no_ptr old_function_ptr |
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| 203 | |
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| 204 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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| 205 | %type<decl> parameter_type_list_opt |
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| 206 | |
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[2871210] | 207 | %type<decl> paren_identifier paren_type |
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[51b7345] | 208 | |
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| 209 | %type<decl> storage_class storage_class_name storage_class_list |
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| 210 | |
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| 211 | %type<decl> sue_declaration_specifier sue_type_specifier |
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| 212 | |
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| 213 | %type<tclass> type_class |
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| 214 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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| 215 | |
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[2871210] | 216 | %type<decl> typedef type_array typedef_declaration typedef_declaration_specifier typedef_expression |
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| 217 | %type<decl> type_function type_parameter_array type_parameter_function type_parameter_ptr |
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| 218 | %type<decl> type_parameter_redeclarator type_ptr type_redeclarator typedef_type_specifier |
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| 219 | %type<decl> typegen_declaration_specifier typegen_type_specifier typegen_name |
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[51b7345] | 220 | |
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| 221 | %type<decl> type_name type_name_no_function |
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| 222 | %type<decl> type_parameter type_parameter_list |
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| 223 | |
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| 224 | %type<en> type_name_list |
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| 225 | |
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| 226 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier |
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| 227 | |
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| 228 | %type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function |
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| 229 | %type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr |
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| 230 | |
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[1db21619] | 231 | %type<decl> attribute_list_opt attribute_list attribute |
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| 232 | |
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[c11e31c] | 233 | // initializers |
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[51b7345] | 234 | %type<in> initializer initializer_list initializer_opt |
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| 235 | |
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[c11e31c] | 236 | // designators |
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[51b7345] | 237 | %type<en> designator designator_list designation |
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| 238 | |
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| 239 | |
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[b87a5ed] | 240 | // Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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| 241 | // is ambiguous: |
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| 242 | // .---------. matches IF '(' comma_expression ')' statement |
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[c11e31c] | 243 | // if ( C ) S1 else S2 |
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[b87a5ed] | 244 | // `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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[51b7345] | 245 | |
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[c11e31c] | 246 | %nonassoc THEN // rule precedence for IF '(' comma_expression ')' statement |
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| 247 | %nonassoc ELSE // token precedence for start of else clause in IF statement |
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[51b7345] | 248 | |
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[b87a5ed] | 249 | %start translation_unit // parse-tree root |
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[51b7345] | 250 | |
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| 251 | %% |
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[c11e31c] | 252 | //************************* Namespace Management ******************************** |
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| 253 | |
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[de62360d] | 254 | // The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols |
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| 255 | // "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free |
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| 256 | // grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this |
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| 257 | // grammar uses the ANSI style. |
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[c11e31c] | 258 | // |
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[de62360d] | 259 | // Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those |
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| 260 | // introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. This latter |
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| 261 | // type name creates a third class of identifiers that must be distinguished by the scanner. |
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[c11e31c] | 262 | // |
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[de62360d] | 263 | // Since the scanner cannot distinguish among the different classes of identifiers without some context information, it |
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| 264 | // accesses a data structure (the TypedefTable) to allow classification of an identifier that it has just read. |
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| 265 | // Semantic actions during the parser update this data structure when the class of identifiers change. |
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[c11e31c] | 266 | // |
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[de62360d] | 267 | // Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a |
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| 268 | // 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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| 269 | // particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are |
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| 270 | // 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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| 271 | // "typedef" or "type" declarations). |
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[c11e31c] | 272 | // |
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[de62360d] | 273 | // 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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| 274 | // scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur |
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| 275 | // within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point |
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| 276 | // of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have |
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| 277 | // enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra |
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| 278 | // 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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| 279 | // "push" and "pop" nonterminals to resolve conflicts of this sort. |
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[51b7345] | 280 | |
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| 281 | push: |
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[4d51835] | 282 | { |
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| 283 | typedefTable.enterScope(); |
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| 284 | } |
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| 285 | ; |
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[51b7345] | 286 | |
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| 287 | pop: |
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[4d51835] | 288 | { |
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| 289 | typedefTable.leaveScope(); |
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| 290 | } |
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| 291 | ; |
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[51b7345] | 292 | |
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[c11e31c] | 293 | //************************* CONSTANTS ******************************** |
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[51b7345] | 294 | |
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| 295 | constant: |
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[de62360d] | 296 | // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant". |
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[59db689] | 297 | INTEGERconstant { $$ = new ConstantNode( ConstantNode::Integer, $1 ); } |
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| 298 | | FLOATINGconstant { $$ = new ConstantNode( ConstantNode::Float, $1 ); } |
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| 299 | | CHARACTERconstant { $$ = new ConstantNode( ConstantNode::Character, $1 ); } |
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[4d51835] | 300 | ; |
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[51b7345] | 301 | |
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| 302 | identifier: |
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[4d51835] | 303 | IDENTIFIER |
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| 304 | | ATTR_IDENTIFIER // CFA |
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| 305 | | zero_one // CFA |
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| 306 | ; |
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[51b7345] | 307 | |
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| 308 | no_01_identifier: |
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[4d51835] | 309 | IDENTIFIER |
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| 310 | | ATTR_IDENTIFIER // CFA |
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| 311 | ; |
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[51b7345] | 312 | |
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| 313 | no_attr_identifier: |
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[4d51835] | 314 | IDENTIFIER |
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| 315 | ; |
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[51b7345] | 316 | |
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[b87a5ed] | 317 | zero_one: // CFA |
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[4d51835] | 318 | ZERO |
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| 319 | | ONE |
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| 320 | ; |
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[51b7345] | 321 | |
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[b87a5ed] | 322 | string_literal_list: // juxtaposed strings are concatenated |
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[59db689] | 323 | STRINGliteral { $$ = new ConstantNode( ConstantNode::String, $1 ); } |
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| 324 | | string_literal_list STRINGliteral { $$ = $1->appendstr( $2 ); } |
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[4d51835] | 325 | ; |
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[51b7345] | 326 | |
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[c11e31c] | 327 | //************************* EXPRESSIONS ******************************** |
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[51b7345] | 328 | |
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| 329 | primary_expression: |
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[4d51835] | 330 | IDENTIFIER // typedef name cannot be used as a variable name |
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[de62360d] | 331 | { $$ = new VarRefNode( $1 ); } |
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[4d51835] | 332 | | zero_one |
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[de62360d] | 333 | { $$ = new VarRefNode( $1 ); } |
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[4d51835] | 334 | | constant |
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| 335 | { $$ = $1; } |
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| 336 | | string_literal_list |
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| 337 | { $$ = $1; } |
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| 338 | | '(' comma_expression ')' |
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| 339 | { $$ = $2; } |
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| 340 | | '(' compound_statement ')' // GCC, lambda expression |
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[de62360d] | 341 | { $$ = new ValofExprNode( $2 ); } |
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[4d51835] | 342 | ; |
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[51b7345] | 343 | |
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| 344 | postfix_expression: |
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[4d51835] | 345 | primary_expression |
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| 346 | | postfix_expression '[' push assignment_expression pop ']' |
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[de62360d] | 347 | // CFA, comma_expression disallowed in the context because it results in a commom user error: subscripting a |
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| 348 | // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be |
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| 349 | // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is |
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| 350 | // equivalent to the old x[i,j]. |
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| 351 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Index ), $1, $4 ); } |
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[4d51835] | 352 | | postfix_expression '(' argument_expression_list ')' |
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[de62360d] | 353 | { $$ = new CompositeExprNode( $1, $3 ); } |
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[4d51835] | 354 | | postfix_expression '.' no_attr_identifier |
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[de62360d] | 355 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), $1, new VarRefNode( $3 )); } |
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[4d51835] | 356 | | postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector |
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| 357 | | postfix_expression ARROW no_attr_identifier |
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[de62360d] | 358 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), $1, new VarRefNode( $3 )); } |
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[4d51835] | 359 | | postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector |
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| 360 | | postfix_expression ICR |
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[de62360d] | 361 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::IncrPost ), $1 ); } |
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[4d51835] | 362 | | postfix_expression DECR |
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[de62360d] | 363 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::DecrPost ), $1 ); } |
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[4d51835] | 364 | // GCC has priority: cast_expression |
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| 365 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99 |
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| 366 | { $$ = 0; } |
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| 367 | ; |
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[51b7345] | 368 | |
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| 369 | argument_expression_list: |
---|
[4d51835] | 370 | argument_expression |
---|
| 371 | | argument_expression_list ',' argument_expression |
---|
[de62360d] | 372 | { $$ = (ExpressionNode *)( $1->set_link( $3 )); } |
---|
[4d51835] | 373 | ; |
---|
[51b7345] | 374 | |
---|
| 375 | argument_expression: |
---|
[4d51835] | 376 | // empty |
---|
| 377 | { $$ = 0; } // use default argument |
---|
| 378 | | assignment_expression |
---|
| 379 | | no_attr_identifier ':' assignment_expression |
---|
[de62360d] | 380 | { $$ = $3->set_asArgName( $1 ); } |
---|
[2871210] | 381 | // Only a list of no_attr_identifier_or_type_name is allowed in this context. However, there is insufficient |
---|
[de62360d] | 382 | // look ahead to distinguish between this list of parameter names and a tuple, so the tuple form must be used |
---|
| 383 | // with an appropriate semantic check. |
---|
[4d51835] | 384 | | '[' push assignment_expression pop ']' ':' assignment_expression |
---|
[de62360d] | 385 | { $$ = $7->set_asArgName( $3 ); } |
---|
[4d51835] | 386 | | '[' push assignment_expression ',' tuple_expression_list pop ']' ':' assignment_expression |
---|
| 387 | { $$ = $9->set_asArgName( new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); } |
---|
| 388 | ; |
---|
[b87a5ed] | 389 | |
---|
| 390 | field_list: // CFA, tuple field selector |
---|
[4d51835] | 391 | field |
---|
| 392 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
| 393 | ; |
---|
[b87a5ed] | 394 | |
---|
| 395 | field: // CFA, tuple field selector |
---|
[4d51835] | 396 | no_attr_identifier |
---|
| 397 | { $$ = new VarRefNode( $1 ); } |
---|
| 398 | | no_attr_identifier '.' field |
---|
[de62360d] | 399 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 400 | | no_attr_identifier '.' '[' push field_list pop ']' |
---|
[de62360d] | 401 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $5 ); } |
---|
[4d51835] | 402 | | no_attr_identifier ARROW field |
---|
[de62360d] | 403 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 404 | | no_attr_identifier ARROW '[' push field_list pop ']' |
---|
[de62360d] | 405 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $5 ); } |
---|
[4d51835] | 406 | ; |
---|
[51b7345] | 407 | |
---|
| 408 | unary_expression: |
---|
[4d51835] | 409 | postfix_expression |
---|
| 410 | | ICR unary_expression |
---|
[de62360d] | 411 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Incr ), $2 ); } |
---|
[4d51835] | 412 | | DECR unary_expression |
---|
[de62360d] | 413 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Decr ), $2 ); } |
---|
[4d51835] | 414 | | EXTENSION cast_expression // GCC |
---|
| 415 | { $$ = $2; } |
---|
| 416 | | unary_operator cast_expression |
---|
[de62360d] | 417 | { $$ = new CompositeExprNode( $1, $2 ); } |
---|
[4d51835] | 418 | | '!' cast_expression |
---|
[de62360d] | 419 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Neg ), $2 ); } |
---|
[4d51835] | 420 | | '*' cast_expression // CFA |
---|
[de62360d] | 421 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PointTo ), $2 ); } |
---|
[4d51835] | 422 | // '*' is is separated from unary_operator because of shift/reduce conflict in: |
---|
| 423 | // { * X; } // dereference X |
---|
| 424 | // { * int X; } // CFA declaration of pointer to int |
---|
| 425 | // '&' must be moved here if C++ reference variables are supported. |
---|
| 426 | | SIZEOF unary_expression |
---|
[de62360d] | 427 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), $2 ); } |
---|
[4d51835] | 428 | | SIZEOF '(' type_name_no_function ')' |
---|
[de62360d] | 429 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), new TypeValueNode( $3 )); } |
---|
[4d51835] | 430 | | ATTR_IDENTIFIER |
---|
[de62360d] | 431 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 )); } |
---|
[4d51835] | 432 | | ATTR_IDENTIFIER '(' type_name ')' |
---|
[de62360d] | 433 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), new TypeValueNode( $3 )); } |
---|
[4d51835] | 434 | | ATTR_IDENTIFIER '(' argument_expression ')' |
---|
[de62360d] | 435 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 436 | | ALIGNOF unary_expression // GCC, variable alignment |
---|
[de62360d] | 437 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), $2 ); } |
---|
[4d51835] | 438 | | ALIGNOF '(' type_name_no_function ')' // GCC, type alignment |
---|
[de62360d] | 439 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), new TypeValueNode( $3 )); } |
---|
[4d51835] | 440 | | ANDAND no_attr_identifier // GCC, address of label |
---|
[de62360d] | 441 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LabelAddress ), new VarRefNode( $2, true )); } |
---|
[4d51835] | 442 | ; |
---|
[51b7345] | 443 | |
---|
| 444 | unary_operator: |
---|
[de62360d] | 445 | '&' { $$ = new OperatorNode( OperatorNode::AddressOf ); } |
---|
| 446 | | '+' { $$ = new OperatorNode( OperatorNode::UnPlus ); } |
---|
| 447 | | '-' { $$ = new OperatorNode( OperatorNode::UnMinus ); } |
---|
| 448 | | '~' { $$ = new OperatorNode( OperatorNode::BitNeg ); } |
---|
[4d51835] | 449 | ; |
---|
[51b7345] | 450 | |
---|
| 451 | cast_expression: |
---|
[4d51835] | 452 | unary_expression |
---|
| 453 | | '(' type_name_no_function ')' cast_expression |
---|
[de62360d] | 454 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); } |
---|
[4d51835] | 455 | | '(' type_name_no_function ')' tuple |
---|
[de62360d] | 456 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); } |
---|
[4d51835] | 457 | ; |
---|
[51b7345] | 458 | |
---|
| 459 | multiplicative_expression: |
---|
[4d51835] | 460 | cast_expression |
---|
| 461 | | multiplicative_expression '*' cast_expression |
---|
[de62360d] | 462 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mul ), $1, $3 ); } |
---|
[4d51835] | 463 | | multiplicative_expression '/' cast_expression |
---|
[de62360d] | 464 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Div ), $1, $3 ); } |
---|
[4d51835] | 465 | | multiplicative_expression '%' cast_expression |
---|
[de62360d] | 466 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mod ), $1, $3 ); } |
---|
[4d51835] | 467 | ; |
---|
[51b7345] | 468 | |
---|
| 469 | additive_expression: |
---|
[4d51835] | 470 | multiplicative_expression |
---|
| 471 | | additive_expression '+' multiplicative_expression |
---|
[de62360d] | 472 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Plus ), $1, $3 ); } |
---|
[4d51835] | 473 | | additive_expression '-' multiplicative_expression |
---|
[de62360d] | 474 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Minus ), $1, $3 ); } |
---|
[4d51835] | 475 | ; |
---|
[51b7345] | 476 | |
---|
| 477 | shift_expression: |
---|
[4d51835] | 478 | additive_expression |
---|
| 479 | | shift_expression LS additive_expression |
---|
[de62360d] | 480 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LShift ), $1, $3 ); } |
---|
[4d51835] | 481 | | shift_expression RS additive_expression |
---|
[de62360d] | 482 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::RShift ), $1, $3 ); } |
---|
[4d51835] | 483 | ; |
---|
[51b7345] | 484 | |
---|
| 485 | relational_expression: |
---|
[4d51835] | 486 | shift_expression |
---|
| 487 | | relational_expression '<' shift_expression |
---|
[de62360d] | 488 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LThan ), $1, $3 ); } |
---|
[4d51835] | 489 | | relational_expression '>' shift_expression |
---|
[de62360d] | 490 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GThan ), $1, $3 ); } |
---|
[4d51835] | 491 | | relational_expression LE shift_expression |
---|
[de62360d] | 492 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LEThan ), $1, $3 ); } |
---|
[4d51835] | 493 | | relational_expression GE shift_expression |
---|
[de62360d] | 494 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GEThan ), $1, $3 ); } |
---|
[4d51835] | 495 | ; |
---|
[51b7345] | 496 | |
---|
| 497 | equality_expression: |
---|
[4d51835] | 498 | relational_expression |
---|
| 499 | | equality_expression EQ relational_expression |
---|
[de62360d] | 500 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Eq ), $1, $3 ); } |
---|
[4d51835] | 501 | | equality_expression NE relational_expression |
---|
[de62360d] | 502 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Neq ), $1, $3 ); } |
---|
[4d51835] | 503 | ; |
---|
[51b7345] | 504 | |
---|
| 505 | AND_expression: |
---|
[4d51835] | 506 | equality_expression |
---|
| 507 | | AND_expression '&' equality_expression |
---|
[de62360d] | 508 | { $$ =new CompositeExprNode( new OperatorNode( OperatorNode::BitAnd ), $1, $3 ); } |
---|
[4d51835] | 509 | ; |
---|
[51b7345] | 510 | |
---|
| 511 | exclusive_OR_expression: |
---|
[4d51835] | 512 | AND_expression |
---|
| 513 | | exclusive_OR_expression '^' AND_expression |
---|
[de62360d] | 514 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Xor ), $1, $3 ); } |
---|
[4d51835] | 515 | ; |
---|
[51b7345] | 516 | |
---|
| 517 | inclusive_OR_expression: |
---|
[4d51835] | 518 | exclusive_OR_expression |
---|
| 519 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
[de62360d] | 520 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::BitOr ), $1, $3 ); } |
---|
[4d51835] | 521 | ; |
---|
[51b7345] | 522 | |
---|
| 523 | logical_AND_expression: |
---|
[4d51835] | 524 | inclusive_OR_expression |
---|
| 525 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
[de62360d] | 526 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::And ), $1, $3 ); } |
---|
[4d51835] | 527 | ; |
---|
[51b7345] | 528 | |
---|
| 529 | logical_OR_expression: |
---|
[4d51835] | 530 | logical_AND_expression |
---|
| 531 | | logical_OR_expression OROR logical_AND_expression |
---|
[de62360d] | 532 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Or ), $1, $3 ); } |
---|
[4d51835] | 533 | ; |
---|
[51b7345] | 534 | |
---|
| 535 | conditional_expression: |
---|
[4d51835] | 536 | logical_OR_expression |
---|
| 537 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
[de62360d] | 538 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode *)mkList( (*$1, *$3, *$5 ) ) ); } |
---|
[4d51835] | 539 | | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand |
---|
[de62360d] | 540 | { $$=new CompositeExprNode( new OperatorNode( OperatorNode::NCond ), $1, $4 ); } |
---|
[4d51835] | 541 | | logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression |
---|
[de62360d] | 542 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode *)mkList( (*$1, *$3, *$5 ) ) ); } |
---|
[4d51835] | 543 | ; |
---|
[51b7345] | 544 | |
---|
| 545 | constant_expression: |
---|
[4d51835] | 546 | conditional_expression |
---|
| 547 | ; |
---|
[51b7345] | 548 | |
---|
| 549 | assignment_expression: |
---|
[4d51835] | 550 | // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples |
---|
| 551 | conditional_expression |
---|
| 552 | | unary_expression '=' assignment_expression |
---|
[de62360d] | 553 | { $$ =new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $3 ); } |
---|
[4d51835] | 554 | | unary_expression assignment_operator assignment_expression |
---|
[de62360d] | 555 | { $$ =new CompositeExprNode( $2, $1, $3 ); } |
---|
[4d51835] | 556 | | tuple assignment_opt // CFA, tuple expression |
---|
[de62360d] | 557 | { $$ = ( $2 == 0 ) ? $1 : new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $2 ); } |
---|
[4d51835] | 558 | ; |
---|
[51b7345] | 559 | |
---|
| 560 | assignment_expression_opt: |
---|
[4d51835] | 561 | // empty |
---|
| 562 | { $$ = new NullExprNode; } |
---|
| 563 | | assignment_expression |
---|
| 564 | ; |
---|
[b87a5ed] | 565 | |
---|
| 566 | tuple: // CFA, tuple |
---|
[de62360d] | 567 | // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with |
---|
| 568 | // comma_expression in new_identifier_parameter_array and new_abstract_array |
---|
[2871210] | 569 | '[' ']' |
---|
[4d51835] | 570 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ) ); } |
---|
| 571 | | '[' push assignment_expression pop ']' |
---|
| 572 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), $3 ); } |
---|
| 573 | | '[' push ',' tuple_expression_list pop ']' |
---|
| 574 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(new NullExprNode)->set_link( $4 ) ); } |
---|
| 575 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
---|
| 576 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 ) ) ); } |
---|
| 577 | ; |
---|
[51b7345] | 578 | |
---|
| 579 | tuple_expression_list: |
---|
[4d51835] | 580 | assignment_expression_opt |
---|
| 581 | | tuple_expression_list ',' assignment_expression_opt |
---|
| 582 | { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
| 583 | ; |
---|
[51b7345] | 584 | |
---|
| 585 | assignment_operator: |
---|
[de62360d] | 586 | MULTassign { $$ = new OperatorNode( OperatorNode::MulAssn ); } |
---|
| 587 | | DIVassign { $$ = new OperatorNode( OperatorNode::DivAssn ); } |
---|
| 588 | | MODassign { $$ = new OperatorNode( OperatorNode::ModAssn ); } |
---|
| 589 | | PLUSassign { $$ = new OperatorNode( OperatorNode::PlusAssn ); } |
---|
| 590 | | MINUSassign { $$ = new OperatorNode( OperatorNode::MinusAssn ); } |
---|
| 591 | | LSassign { $$ = new OperatorNode( OperatorNode::LSAssn ); } |
---|
| 592 | | RSassign { $$ = new OperatorNode( OperatorNode::RSAssn ); } |
---|
| 593 | | ANDassign { $$ = new OperatorNode( OperatorNode::AndAssn ); } |
---|
| 594 | | ERassign { $$ = new OperatorNode( OperatorNode::ERAssn ); } |
---|
| 595 | | ORassign { $$ = new OperatorNode( OperatorNode::OrAssn ); } |
---|
[4d51835] | 596 | ; |
---|
[51b7345] | 597 | |
---|
| 598 | comma_expression: |
---|
[4d51835] | 599 | assignment_expression |
---|
[de62360d] | 600 | | comma_expression ',' assignment_expression // { $$ = (ExpressionNode *)$1->add_to_list( $3 ); } |
---|
| 601 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Comma ), $1, $3 ); } |
---|
[4d51835] | 602 | ; |
---|
[51b7345] | 603 | |
---|
| 604 | comma_expression_opt: |
---|
[4d51835] | 605 | // empty |
---|
| 606 | { $$ = 0; } |
---|
| 607 | | comma_expression |
---|
| 608 | ; |
---|
[51b7345] | 609 | |
---|
[c11e31c] | 610 | //*************************** STATEMENTS ******************************* |
---|
[51b7345] | 611 | |
---|
| 612 | statement: |
---|
[4d51835] | 613 | labeled_statement |
---|
| 614 | | compound_statement |
---|
| 615 | | expression_statement { $$ = $1; } |
---|
| 616 | | selection_statement |
---|
| 617 | | iteration_statement |
---|
| 618 | | jump_statement |
---|
| 619 | | exception_statement |
---|
| 620 | | asm_statement |
---|
| 621 | ; |
---|
[51b7345] | 622 | |
---|
| 623 | labeled_statement: |
---|
[4d51835] | 624 | no_attr_identifier ':' attribute_list_opt statement |
---|
[1db21619] | 625 | { |
---|
| 626 | $$ = $4->add_label( $1 ); |
---|
| 627 | } |
---|
[4d51835] | 628 | ; |
---|
[51b7345] | 629 | |
---|
| 630 | compound_statement: |
---|
[4d51835] | 631 | '{' '}' |
---|
| 632 | { $$ = new CompoundStmtNode( (StatementNode *)0 ); } |
---|
| 633 | | '{' |
---|
[de62360d] | 634 | // Two scopes are necessary because the block itself has a scope, but every declaration within the block also |
---|
| 635 | // requires its own scope |
---|
[4d51835] | 636 | push push |
---|
| 637 | label_declaration_opt // GCC, local labels |
---|
| 638 | block_item_list pop '}' // C99, intermix declarations and statements |
---|
| 639 | { $$ = new CompoundStmtNode( $5 ); } |
---|
| 640 | ; |
---|
[b87a5ed] | 641 | |
---|
| 642 | block_item_list: // C99 |
---|
[4d51835] | 643 | block_item |
---|
| 644 | | block_item_list push block_item |
---|
[de62360d] | 645 | { if ( $1 != 0 ) { $1->set_link( $3 ); $$ = $1; } } |
---|
[4d51835] | 646 | ; |
---|
[51b7345] | 647 | |
---|
| 648 | block_item: |
---|
[4d51835] | 649 | declaration // CFA, new & old style declarations |
---|
| 650 | { $$ = new StatementNode( $1 ); } |
---|
| 651 | | EXTENSION declaration // GCC |
---|
| 652 | { $$ = new StatementNode( $2 ); } |
---|
| 653 | | function_definition |
---|
| 654 | { $$ = new StatementNode( $1 ); } |
---|
| 655 | | statement pop |
---|
| 656 | ; |
---|
[51b7345] | 657 | |
---|
| 658 | statement_list: |
---|
[4d51835] | 659 | statement |
---|
| 660 | | statement_list statement |
---|
[de62360d] | 661 | { if ( $1 != 0 ) { $1->set_link( $2 ); $$ = $1; } } |
---|
[4d51835] | 662 | ; |
---|
[51b7345] | 663 | |
---|
| 664 | expression_statement: |
---|
[4d51835] | 665 | comma_expression_opt ';' |
---|
[de62360d] | 666 | { $$ = new StatementNode( StatementNode::Exp, $1, 0 ); } |
---|
[4d51835] | 667 | ; |
---|
[51b7345] | 668 | |
---|
| 669 | selection_statement: |
---|
[4d51835] | 670 | IF '(' comma_expression ')' statement %prec THEN |
---|
| 671 | // explicitly deal with the shift/reduce conflict on if/else |
---|
[de62360d] | 672 | { $$ = new StatementNode( StatementNode::If, $3, $5 ); } |
---|
[4d51835] | 673 | | IF '(' comma_expression ')' statement ELSE statement |
---|
[de62360d] | 674 | { $$ = new StatementNode( StatementNode::If, $3, (StatementNode *)mkList((*$5, *$7 )) ); } |
---|
[4d51835] | 675 | | SWITCH '(' comma_expression ')' case_clause // CFA |
---|
[de62360d] | 676 | { $$ = new StatementNode( StatementNode::Switch, $3, $5 ); } |
---|
[4d51835] | 677 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA |
---|
[de62360d] | 678 | { $$ = new StatementNode( StatementNode::Switch, $3, $8 ); /* xxx */ } |
---|
| 679 | // The semantics of the declaration list is changed to include any associated initialization, which is performed |
---|
| 680 | // *before* the transfer to the appropriate case clause. Statements after the initial declaration list can |
---|
| 681 | // never be executed, and therefore, are removed from the grammar even though C allows it. |
---|
[4d51835] | 682 | | CHOOSE '(' comma_expression ')' case_clause // CFA |
---|
[de62360d] | 683 | { $$ = new StatementNode( StatementNode::Choose, $3, $5 ); } |
---|
[4d51835] | 684 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA |
---|
[de62360d] | 685 | { $$ = new StatementNode( StatementNode::Choose, $3, $8 ); } |
---|
[4d51835] | 686 | ; |
---|
[b87a5ed] | 687 | |
---|
[de62360d] | 688 | // CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case |
---|
| 689 | // clause allows a list of values and subranges. |
---|
[b87a5ed] | 690 | |
---|
| 691 | case_value: // CFA |
---|
[4d51835] | 692 | constant_expression { $$ = $1; } |
---|
| 693 | | constant_expression ELLIPSIS constant_expression // GCC, subrange |
---|
[de62360d] | 694 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); } |
---|
[4d51835] | 695 | | subrange // CFA, subrange |
---|
| 696 | ; |
---|
[b87a5ed] | 697 | |
---|
| 698 | case_value_list: // CFA |
---|
[4d51835] | 699 | case_value |
---|
| 700 | | case_value_list ',' case_value |
---|
[de62360d] | 701 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(tupleContents( $1 ))->set_link( $3 ) ); } |
---|
[4d51835] | 702 | ; |
---|
[b87a5ed] | 703 | |
---|
| 704 | case_label: // CFA |
---|
[de62360d] | 705 | CASE case_value_list ':' { $$ = new StatementNode( StatementNode::Case, $2, 0 ); } |
---|
| 706 | | DEFAULT ':' { $$ = new StatementNode( StatementNode::Default ); } |
---|
[4d51835] | 707 | // A semantic check is required to ensure only one default clause per switch/choose statement. |
---|
| 708 | ; |
---|
[b87a5ed] | 709 | |
---|
| 710 | case_label_list: // CFA |
---|
[4d51835] | 711 | case_label |
---|
[de62360d] | 712 | | case_label_list case_label { $$ = (StatementNode *)( $1->set_link( $2 )); } |
---|
[4d51835] | 713 | ; |
---|
[b87a5ed] | 714 | |
---|
| 715 | case_clause: // CFA |
---|
[de62360d] | 716 | case_label_list statement { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 717 | ; |
---|
[b87a5ed] | 718 | |
---|
| 719 | switch_clause_list_opt: // CFA |
---|
[4d51835] | 720 | // empty |
---|
| 721 | { $$ = 0; } |
---|
| 722 | | switch_clause_list |
---|
| 723 | ; |
---|
[b87a5ed] | 724 | |
---|
| 725 | switch_clause_list: // CFA |
---|
[4d51835] | 726 | case_label_list statement_list |
---|
[de62360d] | 727 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 728 | | switch_clause_list case_label_list statement_list |
---|
[de62360d] | 729 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 730 | ; |
---|
[b87a5ed] | 731 | |
---|
| 732 | choose_clause_list_opt: // CFA |
---|
[4d51835] | 733 | // empty |
---|
| 734 | { $$ = 0; } |
---|
| 735 | | choose_clause_list |
---|
| 736 | ; |
---|
[b87a5ed] | 737 | |
---|
| 738 | choose_clause_list: // CFA |
---|
[4d51835] | 739 | case_label_list fall_through |
---|
[de62360d] | 740 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 741 | | case_label_list statement_list fall_through_opt |
---|
[de62360d] | 742 | { $$ = $1->append_last_case((StatementNode *)mkList((*$2,*$3 ))); } |
---|
[4d51835] | 743 | | choose_clause_list case_label_list fall_through |
---|
[de62360d] | 744 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 745 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
[de62360d] | 746 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case((StatementNode *)mkList((*$3,*$4 ))))); } |
---|
[4d51835] | 747 | ; |
---|
[b87a5ed] | 748 | |
---|
| 749 | fall_through_opt: // CFA |
---|
[4d51835] | 750 | // empty |
---|
| 751 | { $$ = 0; } |
---|
| 752 | | fall_through |
---|
| 753 | ; |
---|
[b87a5ed] | 754 | |
---|
| 755 | fall_through: // CFA |
---|
[de62360d] | 756 | FALLTHRU { $$ = new StatementNode( StatementNode::Fallthru, 0, 0 ); } |
---|
| 757 | | FALLTHRU ';' { $$ = new StatementNode( StatementNode::Fallthru, 0, 0 ); } |
---|
[4d51835] | 758 | ; |
---|
[51b7345] | 759 | |
---|
| 760 | iteration_statement: |
---|
[4d51835] | 761 | WHILE '(' comma_expression ')' statement |
---|
[de62360d] | 762 | { $$ = new StatementNode( StatementNode::While, $3, $5 ); } |
---|
[4d51835] | 763 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
[de62360d] | 764 | { $$ = new StatementNode( StatementNode::Do, $5, $2 ); } |
---|
[4d51835] | 765 | | FOR '(' push for_control_expression ')' statement |
---|
[de62360d] | 766 | { $$ = new StatementNode( StatementNode::For, $4, $6 ); } |
---|
[4d51835] | 767 | ; |
---|
[51b7345] | 768 | |
---|
| 769 | for_control_expression: |
---|
[4d51835] | 770 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
[de62360d] | 771 | { $$ = new ForCtlExprNode( $1, $4, $6 ); } |
---|
[4d51835] | 772 | | declaration comma_expression_opt ';' comma_expression_opt // C99 |
---|
[de62360d] | 773 | { $$ = new ForCtlExprNode( $1, $2, $4 ); } |
---|
[4d51835] | 774 | ; |
---|
[51b7345] | 775 | |
---|
| 776 | jump_statement: |
---|
[4d51835] | 777 | GOTO no_attr_identifier ';' |
---|
[de62360d] | 778 | { $$ = new StatementNode( StatementNode::Goto, $2 ); } |
---|
[4d51835] | 779 | | GOTO '*' comma_expression ';' // GCC, computed goto |
---|
[de62360d] | 780 | // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3 ); |
---|
| 781 | // whereas normal operator precedence yields goto (*i)+3; |
---|
| 782 | { $$ = new StatementNode( StatementNode::Goto, $3 ); } |
---|
[4d51835] | 783 | | CONTINUE ';' |
---|
[de62360d] | 784 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
| 785 | { $$ = new StatementNode( StatementNode::Continue, 0, 0 ); } |
---|
[4d51835] | 786 | | CONTINUE no_attr_identifier ';' // CFA, multi-level continue |
---|
[de62360d] | 787 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 788 | // the target of the transfer appears only at the start of an iteration statement. |
---|
| 789 | { $$ = new StatementNode( StatementNode::Continue, $2 ); } |
---|
[4d51835] | 790 | | BREAK ';' |
---|
[de62360d] | 791 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
| 792 | { $$ = new StatementNode( StatementNode::Break, 0, 0 ); } |
---|
[4d51835] | 793 | | BREAK no_attr_identifier ';' // CFA, multi-level exit |
---|
[de62360d] | 794 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 795 | // the target of the transfer appears only at the start of an iteration statement. |
---|
| 796 | { $$ = new StatementNode( StatementNode::Break, $2 ); } |
---|
[4d51835] | 797 | | RETURN comma_expression_opt ';' |
---|
[de62360d] | 798 | { $$ = new StatementNode( StatementNode::Return, $2, 0 ); } |
---|
[4d51835] | 799 | | THROW assignment_expression ';' |
---|
[de62360d] | 800 | { $$ = new StatementNode( StatementNode::Throw, $2, 0 ); } |
---|
[4d51835] | 801 | | THROW ';' |
---|
[de62360d] | 802 | { $$ = new StatementNode( StatementNode::Throw, 0, 0 ); } |
---|
[4d51835] | 803 | ; |
---|
[51b7345] | 804 | |
---|
| 805 | exception_statement: |
---|
[4d51835] | 806 | TRY compound_statement handler_list |
---|
[de62360d] | 807 | { $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); } |
---|
[4d51835] | 808 | | TRY compound_statement finally_clause |
---|
[de62360d] | 809 | { $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); } |
---|
[4d51835] | 810 | | TRY compound_statement handler_list finally_clause |
---|
| 811 | { |
---|
[de62360d] | 812 | $3->set_link( $4 ); |
---|
| 813 | $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); |
---|
[4d51835] | 814 | } |
---|
| 815 | ; |
---|
[51b7345] | 816 | |
---|
| 817 | handler_list: |
---|
[4d51835] | 818 | // There must be at least one catch clause |
---|
| 819 | handler_clause |
---|
[de62360d] | 820 | // ISO/IEC 9899:1999 Section 15.3(6 ) If present, a "..." handler shall be the last handler for its try block. |
---|
[4d51835] | 821 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 822 | { $$ = StatementNode::newCatchStmt( 0, $5, true ); } |
---|
| 823 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 824 | { $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); } |
---|
| 825 | ; |
---|
[51b7345] | 826 | |
---|
| 827 | handler_clause: |
---|
[4d51835] | 828 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[de62360d] | 829 | { $$ = StatementNode::newCatchStmt( $5, $8 ); } |
---|
[4d51835] | 830 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[de62360d] | 831 | { $$ = $1->set_link( StatementNode::newCatchStmt( $6, $9 ) ); } |
---|
[4d51835] | 832 | ; |
---|
[51b7345] | 833 | |
---|
| 834 | finally_clause: |
---|
[4d51835] | 835 | FINALLY compound_statement |
---|
| 836 | { |
---|
[de62360d] | 837 | $$ = new StatementNode( StatementNode::Finally, 0, $2 ); |
---|
[4d51835] | 838 | std::cout << "Just created a finally node" << std::endl; |
---|
| 839 | } |
---|
| 840 | ; |
---|
[51b7345] | 841 | |
---|
| 842 | exception_declaration: |
---|
[4d51835] | 843 | // A semantic check is required to ensure type_specifier does not create a new type, e.g.: |
---|
| 844 | // |
---|
| 845 | // catch ( struct { int i; } x ) ... |
---|
| 846 | // |
---|
| 847 | // This new type cannot catch any thrown type because of name equivalence among types. |
---|
| 848 | type_specifier |
---|
| 849 | | type_specifier declarator |
---|
| 850 | { |
---|
| 851 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 852 | $$ = $2->addType( $1 ); |
---|
| 853 | } |
---|
| 854 | | type_specifier variable_abstract_declarator |
---|
| 855 | { $$ = $2->addType( $1 ); } |
---|
| 856 | | new_abstract_declarator_tuple no_attr_identifier // CFA |
---|
| 857 | { |
---|
| 858 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 859 | $$ = $1->addName( $2 ); |
---|
| 860 | } |
---|
| 861 | | new_abstract_declarator_tuple // CFA |
---|
| 862 | ; |
---|
[51b7345] | 863 | |
---|
| 864 | asm_statement: |
---|
[4d51835] | 865 | ASM type_qualifier_list_opt '(' constant_expression ')' ';' |
---|
[de62360d] | 866 | { $$ = new StatementNode( StatementNode::Asm, 0, 0 ); } |
---|
[4d51835] | 867 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ')' ';' // remaining GCC |
---|
[de62360d] | 868 | { $$ = new StatementNode( StatementNode::Asm, 0, 0 ); } |
---|
[4d51835] | 869 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
[de62360d] | 870 | { $$ = new StatementNode( StatementNode::Asm, 0, 0 ); } |
---|
[4d51835] | 871 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list ')' ';' |
---|
[de62360d] | 872 | { $$ = new StatementNode( StatementNode::Asm, 0, 0 ); } |
---|
[4d51835] | 873 | ; |
---|
[b87a5ed] | 874 | |
---|
| 875 | asm_operands_opt: // GCC |
---|
[4d51835] | 876 | // empty |
---|
| 877 | | asm_operands_list |
---|
| 878 | ; |
---|
[b87a5ed] | 879 | |
---|
| 880 | asm_operands_list: // GCC |
---|
[4d51835] | 881 | asm_operand |
---|
| 882 | | asm_operands_list ',' asm_operand |
---|
| 883 | ; |
---|
[b87a5ed] | 884 | |
---|
| 885 | asm_operand: // GCC |
---|
[68cd1ce] | 886 | STRINGliteral '(' constant_expression ')' {} |
---|
[4d51835] | 887 | ; |
---|
[b87a5ed] | 888 | |
---|
| 889 | asm_clobbers_list: // GCC |
---|
[4d51835] | 890 | STRINGliteral {} |
---|
| 891 | | asm_clobbers_list ',' STRINGliteral |
---|
| 892 | ; |
---|
[51b7345] | 893 | |
---|
[c11e31c] | 894 | //******************************* DECLARATIONS ********************************* |
---|
[51b7345] | 895 | |
---|
[b87a5ed] | 896 | declaration_list_opt: // used at beginning of switch statement |
---|
[4d51835] | 897 | pop |
---|
| 898 | { $$ = 0; } |
---|
| 899 | | declaration_list |
---|
| 900 | ; |
---|
[51b7345] | 901 | |
---|
| 902 | declaration_list: |
---|
[4d51835] | 903 | declaration |
---|
| 904 | | declaration_list push declaration |
---|
| 905 | { $$ = $1->appendList( $3 ); } |
---|
| 906 | ; |
---|
[51b7345] | 907 | |
---|
[b87a5ed] | 908 | old_declaration_list_opt: // used to declare parameter types in K&R style functions |
---|
[4d51835] | 909 | pop |
---|
| 910 | { $$ = 0; } |
---|
| 911 | | old_declaration_list |
---|
| 912 | ; |
---|
[51b7345] | 913 | |
---|
| 914 | old_declaration_list: |
---|
[4d51835] | 915 | old_declaration |
---|
| 916 | | old_declaration_list push old_declaration |
---|
| 917 | { $$ = $1->appendList( $3 ); } |
---|
| 918 | ; |
---|
[b87a5ed] | 919 | |
---|
| 920 | label_declaration_opt: // GCC, local label |
---|
[4d51835] | 921 | // empty |
---|
| 922 | | label_declaration_list |
---|
| 923 | ; |
---|
[b87a5ed] | 924 | |
---|
| 925 | label_declaration_list: // GCC, local label |
---|
[4d51835] | 926 | LABEL label_list ';' |
---|
| 927 | | label_declaration_list LABEL label_list ';' |
---|
| 928 | ; |
---|
[b87a5ed] | 929 | |
---|
| 930 | label_list: // GCC, local label |
---|
[2871210] | 931 | no_attr_identifier_or_type_name {} |
---|
| 932 | | label_list ',' no_attr_identifier_or_type_name {} |
---|
[4d51835] | 933 | ; |
---|
[b87a5ed] | 934 | |
---|
| 935 | declaration: // CFA, new & old style declarations |
---|
[4d51835] | 936 | new_declaration |
---|
| 937 | | old_declaration |
---|
| 938 | ; |
---|
[b87a5ed] | 939 | |
---|
[de62360d] | 940 | // C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function |
---|
| 941 | // declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to |
---|
| 942 | // the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration |
---|
| 943 | // modifiers are interpreted from left to right and the entire type specification is distributed across all variables in |
---|
| 944 | // the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program |
---|
| 945 | // block, but cannot be mixed within a specific declaration. |
---|
[c11e31c] | 946 | // |
---|
[b87a5ed] | 947 | // CFA C |
---|
| 948 | // [10] int x; int x[10]; // array of 10 integers |
---|
| 949 | // [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
| 950 | |
---|
| 951 | new_declaration: // CFA |
---|
[4d51835] | 952 | new_variable_declaration pop ';' |
---|
| 953 | | new_typedef_declaration pop ';' |
---|
| 954 | | new_function_declaration pop ';' |
---|
| 955 | | type_declaring_list pop ';' |
---|
| 956 | | context_specifier pop ';' |
---|
| 957 | ; |
---|
[b87a5ed] | 958 | |
---|
| 959 | new_variable_declaration: // CFA |
---|
[4d51835] | 960 | new_variable_specifier initializer_opt |
---|
| 961 | { |
---|
| 962 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 963 | $$ = $1; |
---|
| 964 | } |
---|
| 965 | | declaration_qualifier_list new_variable_specifier initializer_opt |
---|
[de62360d] | 966 | // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude |
---|
| 967 | // them as a type_qualifier cannot appear in that context. |
---|
[4d51835] | 968 | { |
---|
| 969 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 970 | $$ = $2->addQualifiers( $1 ); |
---|
| 971 | } |
---|
[2871210] | 972 | | new_variable_declaration pop ',' push identifier_or_type_name initializer_opt |
---|
[4d51835] | 973 | { |
---|
| 974 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 975 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 976 | } |
---|
| 977 | ; |
---|
[b87a5ed] | 978 | |
---|
| 979 | new_variable_specifier: // CFA |
---|
[de62360d] | 980 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 981 | // storage-class |
---|
[2871210] | 982 | new_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 983 | { |
---|
| 984 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 985 | $$ = $1->addName( $2 ); |
---|
| 986 | } |
---|
[2871210] | 987 | | new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 988 | { |
---|
| 989 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 990 | $$ = $1->addName( $2 ); |
---|
| 991 | } |
---|
[2871210] | 992 | | type_qualifier_list new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 993 | { |
---|
| 994 | typedefTable.setNextIdentifier( *$3 ); |
---|
| 995 | $$ = $2->addQualifiers( $1 )->addName( $3 ); |
---|
| 996 | } |
---|
| 997 | ; |
---|
[b87a5ed] | 998 | |
---|
| 999 | new_function_declaration: // CFA |
---|
[4d51835] | 1000 | new_function_specifier |
---|
| 1001 | { |
---|
| 1002 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1003 | $$ = $1; |
---|
| 1004 | } |
---|
| 1005 | | type_qualifier_list new_function_specifier |
---|
| 1006 | { |
---|
| 1007 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1008 | $$ = $2->addQualifiers( $1 ); |
---|
| 1009 | } |
---|
| 1010 | | declaration_qualifier_list new_function_specifier |
---|
| 1011 | { |
---|
| 1012 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1013 | $$ = $2->addQualifiers( $1 ); |
---|
| 1014 | } |
---|
| 1015 | | declaration_qualifier_list type_qualifier_list new_function_specifier |
---|
| 1016 | { |
---|
| 1017 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1018 | $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); |
---|
| 1019 | } |
---|
[2871210] | 1020 | | new_function_declaration pop ',' push identifier_or_type_name |
---|
[4d51835] | 1021 | { |
---|
| 1022 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 1023 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1024 | } |
---|
| 1025 | ; |
---|
[b87a5ed] | 1026 | |
---|
| 1027 | new_function_specifier: // CFA |
---|
[2871210] | 1028 | '[' ']' identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' // S/R conflict |
---|
[4d51835] | 1029 | { |
---|
[2871210] | 1030 | $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true ); |
---|
[4d51835] | 1031 | } |
---|
[2871210] | 1032 | // '[' ']' identifier '(' push new_parameter_type_list_opt pop ')' |
---|
| 1033 | // { |
---|
| 1034 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1035 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1036 | // } |
---|
| 1037 | // | '[' ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')' |
---|
| 1038 | // { |
---|
| 1039 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1040 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1041 | // } |
---|
| 1042 | // | '[' ']' typegen_name |
---|
| 1043 | // identifier_or_type_name must be broken apart because of the sequence: |
---|
[4d51835] | 1044 | // |
---|
[2871210] | 1045 | // '[' ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[4d51835] | 1046 | // '[' ']' type_specifier |
---|
| 1047 | // |
---|
[2871210] | 1048 | // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be |
---|
| 1049 | // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name. |
---|
| 1050 | | new_abstract_tuple identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[de62360d] | 1051 | // To obtain LR(1 ), this rule must be factored out from function return type (see new_abstract_declarator). |
---|
[4d51835] | 1052 | { |
---|
| 1053 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1054 | } |
---|
[2871210] | 1055 | | new_function_return identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[4d51835] | 1056 | { |
---|
| 1057 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1058 | } |
---|
| 1059 | ; |
---|
[b87a5ed] | 1060 | |
---|
| 1061 | new_function_return: // CFA |
---|
[4d51835] | 1062 | '[' push new_parameter_list pop ']' |
---|
| 1063 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 1064 | | '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']' |
---|
[de62360d] | 1065 | // To obtain LR(1 ), the last new_abstract_parameter_list is added into this flattened rule to lookahead to the |
---|
| 1066 | // ']'. |
---|
[4d51835] | 1067 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
| 1068 | ; |
---|
[b87a5ed] | 1069 | |
---|
| 1070 | new_typedef_declaration: // CFA |
---|
[4d51835] | 1071 | TYPEDEF new_variable_specifier |
---|
| 1072 | { |
---|
[de62360d] | 1073 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1074 | $$ = $2->addTypedef(); |
---|
| 1075 | } |
---|
| 1076 | | TYPEDEF new_function_specifier |
---|
| 1077 | { |
---|
[de62360d] | 1078 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1079 | $$ = $2->addTypedef(); |
---|
| 1080 | } |
---|
| 1081 | | new_typedef_declaration pop ',' push no_attr_identifier |
---|
| 1082 | { |
---|
[de62360d] | 1083 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1084 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1085 | } |
---|
| 1086 | ; |
---|
[b87a5ed] | 1087 | |
---|
[de62360d] | 1088 | // Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as |
---|
| 1089 | // a separate form of declaration, which syntactically precludes storage-class specifiers and initialization. |
---|
[51b7345] | 1090 | |
---|
| 1091 | typedef_declaration: |
---|
[4d51835] | 1092 | TYPEDEF type_specifier declarator |
---|
| 1093 | { |
---|
[de62360d] | 1094 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1095 | $$ = $3->addType( $2 )->addTypedef(); |
---|
| 1096 | } |
---|
| 1097 | | typedef_declaration pop ',' push declarator |
---|
| 1098 | { |
---|
[de62360d] | 1099 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1100 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
| 1101 | } |
---|
[de62360d] | 1102 | | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1103 | { |
---|
[de62360d] | 1104 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1105 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
| 1106 | } |
---|
| 1107 | | type_specifier TYPEDEF declarator |
---|
| 1108 | { |
---|
[de62360d] | 1109 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1110 | $$ = $3->addType( $1 )->addTypedef(); |
---|
| 1111 | } |
---|
| 1112 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
| 1113 | { |
---|
[de62360d] | 1114 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
| 1115 | $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 ); |
---|
[4d51835] | 1116 | } |
---|
| 1117 | ; |
---|
[b87a5ed] | 1118 | |
---|
[721f17a] | 1119 | typedef_expression: |
---|
| 1120 | // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression |
---|
[4d51835] | 1121 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
| 1122 | { |
---|
[de62360d] | 1123 | typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); |
---|
[4d51835] | 1124 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1125 | } |
---|
| 1126 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
| 1127 | { |
---|
[de62360d] | 1128 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1129 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1130 | } |
---|
| 1131 | ; |
---|
[51b7345] | 1132 | |
---|
| 1133 | old_declaration: |
---|
[4d51835] | 1134 | declaring_list pop ';' |
---|
| 1135 | | typedef_declaration pop ';' |
---|
| 1136 | | typedef_expression pop ';' // GCC, naming expression type |
---|
| 1137 | | sue_declaration_specifier pop ';' |
---|
| 1138 | ; |
---|
[51b7345] | 1139 | |
---|
| 1140 | declaring_list: |
---|
[de62360d] | 1141 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1142 | // storage-class |
---|
[4d51835] | 1143 | declaration_specifier declarator asm_name_opt initializer_opt |
---|
| 1144 | { |
---|
| 1145 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1146 | $$ = ( $2->addType( $1 ))->addInitializer( $4 ); |
---|
[4d51835] | 1147 | } |
---|
| 1148 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1149 | { |
---|
| 1150 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1151 | $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer( $6 ) ) ); |
---|
[4d51835] | 1152 | } |
---|
| 1153 | ; |
---|
[b87a5ed] | 1154 | |
---|
| 1155 | declaration_specifier: // type specifier + storage class |
---|
[4d51835] | 1156 | basic_declaration_specifier |
---|
| 1157 | | sue_declaration_specifier |
---|
| 1158 | | typedef_declaration_specifier |
---|
| 1159 | | typegen_declaration_specifier |
---|
| 1160 | ; |
---|
[b87a5ed] | 1161 | |
---|
| 1162 | type_specifier: // declaration specifier - storage class |
---|
[4d51835] | 1163 | basic_type_specifier |
---|
| 1164 | | sue_type_specifier |
---|
| 1165 | | typedef_type_specifier |
---|
| 1166 | | typegen_type_specifier |
---|
| 1167 | ; |
---|
[b87a5ed] | 1168 | |
---|
| 1169 | type_qualifier_list_opt: // GCC, used in asm_statement |
---|
[4d51835] | 1170 | // empty |
---|
| 1171 | { $$ = 0; } |
---|
| 1172 | | type_qualifier_list |
---|
| 1173 | ; |
---|
[51b7345] | 1174 | |
---|
| 1175 | type_qualifier_list: |
---|
[de62360d] | 1176 | // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration. |
---|
[4d51835] | 1177 | // |
---|
[de62360d] | 1178 | // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same |
---|
| 1179 | // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it |
---|
| 1180 | // appeared only once. |
---|
[4d51835] | 1181 | type_qualifier |
---|
| 1182 | | type_qualifier_list type_qualifier |
---|
| 1183 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1184 | ; |
---|
[51b7345] | 1185 | |
---|
| 1186 | type_qualifier: |
---|
[4d51835] | 1187 | type_qualifier_name |
---|
| 1188 | | attribute |
---|
[1db21619] | 1189 | //{ $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
[4d51835] | 1190 | ; |
---|
[51b7345] | 1191 | |
---|
| 1192 | type_qualifier_name: |
---|
[4d51835] | 1193 | CONST |
---|
| 1194 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
| 1195 | | RESTRICT |
---|
| 1196 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); } |
---|
| 1197 | | VOLATILE |
---|
| 1198 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); } |
---|
| 1199 | | LVALUE // CFA |
---|
| 1200 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); } |
---|
| 1201 | | ATOMIC |
---|
| 1202 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); } |
---|
| 1203 | | FORALL '(' |
---|
| 1204 | { |
---|
| 1205 | typedefTable.enterScope(); |
---|
| 1206 | } |
---|
| 1207 | type_parameter_list ')' // CFA |
---|
| 1208 | { |
---|
| 1209 | typedefTable.leaveScope(); |
---|
| 1210 | $$ = DeclarationNode::newForall( $4 ); |
---|
| 1211 | } |
---|
| 1212 | ; |
---|
[51b7345] | 1213 | |
---|
| 1214 | declaration_qualifier_list: |
---|
[4d51835] | 1215 | storage_class_list |
---|
[de62360d] | 1216 | | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1217 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1218 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
| 1219 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1220 | ; |
---|
[51b7345] | 1221 | |
---|
| 1222 | storage_class_list: |
---|
[de62360d] | 1223 | // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that |
---|
| 1224 | // only one of each is specified, except for inline, which can appear with the others. |
---|
[4d51835] | 1225 | // |
---|
[de62360d] | 1226 | // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration |
---|
| 1227 | // specifiers in a declaration. |
---|
[4d51835] | 1228 | storage_class |
---|
| 1229 | | storage_class_list storage_class |
---|
| 1230 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1231 | ; |
---|
[51b7345] | 1232 | |
---|
| 1233 | storage_class: |
---|
[4d51835] | 1234 | storage_class_name |
---|
| 1235 | ; |
---|
[51b7345] | 1236 | |
---|
| 1237 | storage_class_name: |
---|
[4d51835] | 1238 | EXTERN |
---|
| 1239 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); } |
---|
| 1240 | | STATIC |
---|
| 1241 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); } |
---|
| 1242 | | AUTO |
---|
| 1243 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); } |
---|
| 1244 | | REGISTER |
---|
| 1245 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); } |
---|
| 1246 | | INLINE // C99 |
---|
| 1247 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); } |
---|
| 1248 | | FORTRAN // C99 |
---|
| 1249 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); } |
---|
[68cd1ce] | 1250 | | NORETURN // C11 |
---|
| 1251 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Noreturn ); } |
---|
| 1252 | | THREADLOCAL // C11 |
---|
| 1253 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Threadlocal ); } |
---|
[4d51835] | 1254 | ; |
---|
[51b7345] | 1255 | |
---|
| 1256 | basic_type_name: |
---|
[4d51835] | 1257 | CHAR |
---|
| 1258 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
| 1259 | | DOUBLE |
---|
| 1260 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
| 1261 | | FLOAT |
---|
| 1262 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
| 1263 | | INT |
---|
| 1264 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
| 1265 | | LONG |
---|
| 1266 | { $$ = DeclarationNode::newModifier( DeclarationNode::Long ); } |
---|
| 1267 | | SHORT |
---|
| 1268 | { $$ = DeclarationNode::newModifier( DeclarationNode::Short ); } |
---|
| 1269 | | SIGNED |
---|
| 1270 | { $$ = DeclarationNode::newModifier( DeclarationNode::Signed ); } |
---|
| 1271 | | UNSIGNED |
---|
| 1272 | { $$ = DeclarationNode::newModifier( DeclarationNode::Unsigned ); } |
---|
| 1273 | | VOID |
---|
| 1274 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
| 1275 | | BOOL // C99 |
---|
| 1276 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
| 1277 | | COMPLEX // C99 |
---|
| 1278 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); } |
---|
| 1279 | | IMAGINARY // C99 |
---|
| 1280 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); } |
---|
| 1281 | ; |
---|
[51b7345] | 1282 | |
---|
| 1283 | basic_declaration_specifier: |
---|
[4d51835] | 1284 | // A semantic check is necessary for conflicting storage classes. |
---|
| 1285 | basic_type_specifier |
---|
| 1286 | | declaration_qualifier_list basic_type_specifier |
---|
| 1287 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1288 | | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1289 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1290 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
| 1291 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1292 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
| 1293 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
| 1294 | ; |
---|
[51b7345] | 1295 | |
---|
| 1296 | basic_type_specifier: |
---|
[4d51835] | 1297 | direct_type_name |
---|
| 1298 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
| 1299 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
| 1300 | ; |
---|
[51b7345] | 1301 | |
---|
| 1302 | direct_type_name: |
---|
[4d51835] | 1303 | // A semantic check is necessary for conflicting type qualifiers. |
---|
| 1304 | basic_type_name |
---|
| 1305 | | type_qualifier_list basic_type_name |
---|
| 1306 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1307 | | direct_type_name type_qualifier |
---|
| 1308 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1309 | | direct_type_name basic_type_name |
---|
| 1310 | { $$ = $1->addType( $2 ); } |
---|
| 1311 | ; |
---|
[51b7345] | 1312 | |
---|
| 1313 | indirect_type_name: |
---|
[4d51835] | 1314 | TYPEOF '(' type_name ')' // GCC: typeof(x) y; |
---|
| 1315 | { $$ = $3; } |
---|
| 1316 | | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y; |
---|
| 1317 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
| 1318 | | ATTR_TYPEGENname '(' type_name ')' // CFA: e.g., @type(x) y; |
---|
| 1319 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1320 | | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y; |
---|
| 1321 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1322 | ; |
---|
[51b7345] | 1323 | |
---|
| 1324 | sue_declaration_specifier: |
---|
[4d51835] | 1325 | sue_type_specifier |
---|
| 1326 | | declaration_qualifier_list sue_type_specifier |
---|
| 1327 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1328 | | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1329 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1330 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
| 1331 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1332 | ; |
---|
[51b7345] | 1333 | |
---|
| 1334 | sue_type_specifier: |
---|
[4d51835] | 1335 | elaborated_type_name // struct, union, enum |
---|
| 1336 | | type_qualifier_list elaborated_type_name |
---|
| 1337 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1338 | | sue_type_specifier type_qualifier |
---|
| 1339 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1340 | ; |
---|
[51b7345] | 1341 | |
---|
| 1342 | typedef_declaration_specifier: |
---|
[4d51835] | 1343 | typedef_type_specifier |
---|
| 1344 | | declaration_qualifier_list typedef_type_specifier |
---|
| 1345 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1346 | | typedef_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1347 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1348 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
| 1349 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1350 | ; |
---|
[b87a5ed] | 1351 | |
---|
| 1352 | typedef_type_specifier: // typedef types |
---|
[4d51835] | 1353 | TYPEDEFname |
---|
| 1354 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
| 1355 | | type_qualifier_list TYPEDEFname |
---|
| 1356 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
| 1357 | | typedef_type_specifier type_qualifier |
---|
| 1358 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1359 | ; |
---|
[51b7345] | 1360 | |
---|
| 1361 | elaborated_type_name: |
---|
[4d51835] | 1362 | aggregate_name |
---|
| 1363 | | enum_name |
---|
| 1364 | ; |
---|
[51b7345] | 1365 | |
---|
| 1366 | aggregate_name: |
---|
[4d51835] | 1367 | aggregate_key '{' field_declaration_list '}' |
---|
[721f17a] | 1368 | { $$ = DeclarationNode::newAggregate( $1, 0, 0, $3 ); } |
---|
[2871210] | 1369 | | aggregate_key no_attr_identifier_or_type_name |
---|
[721f17a] | 1370 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, 0 ); } |
---|
[2871210] | 1371 | | aggregate_key no_attr_identifier_or_type_name '{' field_declaration_list '}' |
---|
[721f17a] | 1372 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, $4 ); } |
---|
| 1373 | | aggregate_key '(' type_name_list ')' '{' field_declaration_list '}' // CFA |
---|
| 1374 | { $$ = DeclarationNode::newAggregate( $1, 0, $3, $6 ); } |
---|
[2871210] | 1375 | | aggregate_key typegen_name // CFA, S/R conflict |
---|
| 1376 | { $$ = $2; } |
---|
[4d51835] | 1377 | ; |
---|
[51b7345] | 1378 | |
---|
| 1379 | aggregate_key: |
---|
[4d51835] | 1380 | STRUCT attribute_list_opt |
---|
| 1381 | { $$ = DeclarationNode::Struct; } |
---|
| 1382 | | UNION attribute_list_opt |
---|
| 1383 | { $$ = DeclarationNode::Union; } |
---|
| 1384 | ; |
---|
[51b7345] | 1385 | |
---|
| 1386 | field_declaration_list: |
---|
[4d51835] | 1387 | field_declaration |
---|
| 1388 | { $$ = $1; } |
---|
| 1389 | | field_declaration_list field_declaration |
---|
| 1390 | { $$ = $1->appendList( $2 ); } |
---|
| 1391 | ; |
---|
[51b7345] | 1392 | |
---|
| 1393 | field_declaration: |
---|
[4d51835] | 1394 | new_field_declaring_list ';' // CFA, new style field declaration |
---|
| 1395 | | EXTENSION new_field_declaring_list ';' // GCC |
---|
| 1396 | { $$ = $2; } |
---|
| 1397 | | field_declaring_list ';' |
---|
| 1398 | | EXTENSION field_declaring_list ';' // GCC |
---|
| 1399 | { $$ = $2; } |
---|
| 1400 | ; |
---|
[b87a5ed] | 1401 | |
---|
| 1402 | new_field_declaring_list: // CFA, new style field declaration |
---|
[4d51835] | 1403 | new_abstract_declarator_tuple // CFA, no field name |
---|
[2871210] | 1404 | | new_abstract_declarator_tuple no_attr_identifier_or_type_name |
---|
[4d51835] | 1405 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1406 | | new_field_declaring_list ',' no_attr_identifier_or_type_name |
---|
[4d51835] | 1407 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
| 1408 | | new_field_declaring_list ',' // CFA, no field name |
---|
| 1409 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
| 1410 | ; |
---|
[51b7345] | 1411 | |
---|
| 1412 | field_declaring_list: |
---|
[4d51835] | 1413 | type_specifier field_declarator |
---|
| 1414 | { $$ = $2->addType( $1 ); } |
---|
| 1415 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
| 1416 | { $$ = $1->appendList( $1->cloneBaseType( $4 ) ); } |
---|
| 1417 | ; |
---|
[51b7345] | 1418 | |
---|
| 1419 | field_declarator: |
---|
[4d51835] | 1420 | // empty |
---|
| 1421 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name |
---|
| 1422 | | bit_subrange_size // no field name |
---|
| 1423 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
| 1424 | | variable_declarator bit_subrange_size_opt |
---|
| 1425 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1426 | { $$ = $1->addBitfield( $2 ); } |
---|
[2871210] | 1427 | | type_redeclarator bit_subrange_size_opt |
---|
[4d51835] | 1428 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1429 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1430 | | variable_abstract_declarator // CFA, no field name |
---|
| 1431 | ; |
---|
[51b7345] | 1432 | |
---|
| 1433 | bit_subrange_size_opt: |
---|
[4d51835] | 1434 | // empty |
---|
| 1435 | { $$ = 0; } |
---|
| 1436 | | bit_subrange_size |
---|
| 1437 | { $$ = $1; } |
---|
| 1438 | ; |
---|
[51b7345] | 1439 | |
---|
| 1440 | bit_subrange_size: |
---|
[4d51835] | 1441 | ':' constant_expression |
---|
| 1442 | { $$ = $2; } |
---|
| 1443 | ; |
---|
[51b7345] | 1444 | |
---|
| 1445 | enum_key: |
---|
[4d51835] | 1446 | ENUM attribute_list_opt |
---|
| 1447 | ; |
---|
[51b7345] | 1448 | |
---|
| 1449 | enum_name: |
---|
[4d51835] | 1450 | enum_key '{' enumerator_list comma_opt '}' |
---|
| 1451 | { $$ = DeclarationNode::newEnum( 0, $3 ); } |
---|
[2871210] | 1452 | | enum_key no_attr_identifier_or_type_name '{' enumerator_list comma_opt '}' |
---|
[4d51835] | 1453 | { $$ = DeclarationNode::newEnum( $2, $4 ); } |
---|
[2871210] | 1454 | | enum_key no_attr_identifier_or_type_name |
---|
[4d51835] | 1455 | { $$ = DeclarationNode::newEnum( $2, 0 ); } |
---|
| 1456 | ; |
---|
[51b7345] | 1457 | |
---|
| 1458 | enumerator_list: |
---|
[2871210] | 1459 | no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1460 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
[2871210] | 1461 | | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1462 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
| 1463 | ; |
---|
[51b7345] | 1464 | |
---|
| 1465 | enumerator_value_opt: |
---|
[4d51835] | 1466 | // empty |
---|
| 1467 | { $$ = 0; } |
---|
| 1468 | | '=' constant_expression |
---|
| 1469 | { $$ = $2; } |
---|
| 1470 | ; |
---|
[51b7345] | 1471 | |
---|
[c11e31c] | 1472 | // Minimum of one parameter after which ellipsis is allowed only at the end. |
---|
[51b7345] | 1473 | |
---|
[b87a5ed] | 1474 | new_parameter_type_list_opt: // CFA |
---|
[4d51835] | 1475 | // empty |
---|
| 1476 | { $$ = 0; } |
---|
| 1477 | | new_parameter_type_list |
---|
| 1478 | ; |
---|
[b87a5ed] | 1479 | |
---|
| 1480 | new_parameter_type_list: // CFA, abstract + real |
---|
[4d51835] | 1481 | new_abstract_parameter_list |
---|
| 1482 | | new_parameter_list |
---|
| 1483 | | new_parameter_list pop ',' push new_abstract_parameter_list |
---|
| 1484 | { $$ = $1->appendList( $5 ); } |
---|
| 1485 | | new_abstract_parameter_list pop ',' push ELLIPSIS |
---|
| 1486 | { $$ = $1->addVarArgs(); } |
---|
| 1487 | | new_parameter_list pop ',' push ELLIPSIS |
---|
| 1488 | { $$ = $1->addVarArgs(); } |
---|
| 1489 | ; |
---|
[b87a5ed] | 1490 | |
---|
| 1491 | new_parameter_list: // CFA |
---|
[de62360d] | 1492 | // To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last new_abstract_parameter_list is |
---|
| 1493 | // factored out from new_parameter_list, flattening the rules to get lookahead to the ']'. |
---|
[4d51835] | 1494 | new_parameter_declaration |
---|
| 1495 | | new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1496 | { $$ = $1->appendList( $5 ); } |
---|
| 1497 | | new_parameter_list pop ',' push new_parameter_declaration |
---|
| 1498 | { $$ = $1->appendList( $5 ); } |
---|
| 1499 | | new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1500 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
| 1501 | ; |
---|
[b87a5ed] | 1502 | |
---|
| 1503 | new_abstract_parameter_list: // CFA, new & old style abstract |
---|
[4d51835] | 1504 | new_abstract_parameter_declaration |
---|
| 1505 | | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration |
---|
| 1506 | { $$ = $1->appendList( $5 ); } |
---|
| 1507 | ; |
---|
[51b7345] | 1508 | |
---|
| 1509 | parameter_type_list_opt: |
---|
[4d51835] | 1510 | // empty |
---|
| 1511 | { $$ = 0; } |
---|
| 1512 | | parameter_type_list |
---|
| 1513 | ; |
---|
[51b7345] | 1514 | |
---|
| 1515 | parameter_type_list: |
---|
[4d51835] | 1516 | parameter_list |
---|
| 1517 | | parameter_list pop ',' push ELLIPSIS |
---|
| 1518 | { $$ = $1->addVarArgs(); } |
---|
| 1519 | ; |
---|
[b87a5ed] | 1520 | |
---|
| 1521 | parameter_list: // abstract + real |
---|
[4d51835] | 1522 | abstract_parameter_declaration |
---|
| 1523 | | parameter_declaration |
---|
| 1524 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
| 1525 | { $$ = $1->appendList( $5 ); } |
---|
| 1526 | | parameter_list pop ',' push parameter_declaration |
---|
| 1527 | { $$ = $1->appendList( $5 ); } |
---|
| 1528 | ; |
---|
[51b7345] | 1529 | |
---|
[de62360d] | 1530 | // Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics |
---|
[2871210] | 1531 | // for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes. |
---|
[51b7345] | 1532 | |
---|
[b87a5ed] | 1533 | new_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1534 | parameter_declaration |
---|
[2871210] | 1535 | | new_identifier_parameter_declarator_no_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1536 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1537 | | new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1538 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1539 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1540 | | type_qualifier_list new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1541 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
| 1542 | | new_function_specifier |
---|
| 1543 | ; |
---|
[b87a5ed] | 1544 | |
---|
| 1545 | new_abstract_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1546 | abstract_parameter_declaration |
---|
| 1547 | | new_identifier_parameter_declarator_no_tuple |
---|
| 1548 | | new_abstract_tuple |
---|
| 1549 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1550 | | type_qualifier_list new_abstract_tuple |
---|
| 1551 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1552 | | new_abstract_function |
---|
| 1553 | ; |
---|
[51b7345] | 1554 | |
---|
| 1555 | parameter_declaration: |
---|
[4d51835] | 1556 | declaration_specifier identifier_parameter_declarator assignment_opt |
---|
| 1557 | { |
---|
| 1558 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1559 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1560 | } |
---|
[2871210] | 1561 | | declaration_specifier type_parameter_redeclarator assignment_opt |
---|
[4d51835] | 1562 | { |
---|
| 1563 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1564 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1565 | } |
---|
| 1566 | ; |
---|
[51b7345] | 1567 | |
---|
| 1568 | abstract_parameter_declaration: |
---|
[4d51835] | 1569 | declaration_specifier |
---|
| 1570 | | declaration_specifier abstract_parameter_declarator |
---|
| 1571 | { $$ = $2->addType( $1 ); } |
---|
| 1572 | ; |
---|
[51b7345] | 1573 | |
---|
[c11e31c] | 1574 | // ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
[de62360d] | 1575 | // parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on |
---|
| 1576 | // identifiers. The ANSI-style parameter-list can redefine a typedef name. |
---|
[51b7345] | 1577 | |
---|
[b87a5ed] | 1578 | identifier_list: // K&R-style parameter list => no types |
---|
[4d51835] | 1579 | no_attr_identifier |
---|
| 1580 | { $$ = DeclarationNode::newName( $1 ); } |
---|
| 1581 | | identifier_list ',' no_attr_identifier |
---|
| 1582 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
| 1583 | ; |
---|
[51b7345] | 1584 | |
---|
[2871210] | 1585 | identifier_or_type_name: |
---|
[4d51835] | 1586 | identifier |
---|
| 1587 | | TYPEDEFname |
---|
| 1588 | | TYPEGENname |
---|
| 1589 | ; |
---|
[51b7345] | 1590 | |
---|
[2871210] | 1591 | no_01_identifier_or_type_name: |
---|
[4d51835] | 1592 | no_01_identifier |
---|
| 1593 | | TYPEDEFname |
---|
| 1594 | | TYPEGENname |
---|
| 1595 | ; |
---|
[51b7345] | 1596 | |
---|
[2871210] | 1597 | no_attr_identifier_or_type_name: |
---|
[4d51835] | 1598 | no_attr_identifier |
---|
| 1599 | | TYPEDEFname |
---|
[721f17a] | 1600 | | TYPEGENname |
---|
[4d51835] | 1601 | ; |
---|
[b87a5ed] | 1602 | |
---|
| 1603 | type_name_no_function: // sizeof, alignof, cast (constructor) |
---|
[4d51835] | 1604 | new_abstract_declarator_tuple // CFA |
---|
| 1605 | | type_specifier |
---|
| 1606 | | type_specifier variable_abstract_declarator |
---|
| 1607 | { $$ = $2->addType( $1 ); } |
---|
| 1608 | ; |
---|
[b87a5ed] | 1609 | |
---|
| 1610 | type_name: // typeof, assertion |
---|
[4d51835] | 1611 | new_abstract_declarator_tuple // CFA |
---|
| 1612 | | new_abstract_function // CFA |
---|
| 1613 | | type_specifier |
---|
| 1614 | | type_specifier abstract_declarator |
---|
| 1615 | { $$ = $2->addType( $1 ); } |
---|
| 1616 | ; |
---|
[51b7345] | 1617 | |
---|
| 1618 | initializer_opt: |
---|
[4d51835] | 1619 | // empty |
---|
| 1620 | { $$ = 0; } |
---|
[2871210] | 1621 | | '=' initializer |
---|
| 1622 | { $$ = $2; } |
---|
[4d51835] | 1623 | ; |
---|
[51b7345] | 1624 | |
---|
| 1625 | initializer: |
---|
[de62360d] | 1626 | assignment_expression { $$ = new InitializerNode( $1 ); } |
---|
| 1627 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); } |
---|
[4d51835] | 1628 | ; |
---|
[51b7345] | 1629 | |
---|
| 1630 | initializer_list: |
---|
[4d51835] | 1631 | initializer |
---|
| 1632 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
[de62360d] | 1633 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_link( $3 ) ); } |
---|
[4d51835] | 1634 | | initializer_list ',' designation initializer |
---|
[de62360d] | 1635 | { $$ = (InitializerNode *)( $1->set_link( $4->set_designators( $3 ) ) ); } |
---|
[4d51835] | 1636 | ; |
---|
[b87a5ed] | 1637 | |
---|
[de62360d] | 1638 | // There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of |
---|
| 1639 | // '=' to separator the designator from the initializer value, as in: |
---|
[c11e31c] | 1640 | // |
---|
[b87a5ed] | 1641 | // int x[10] = { [1] = 3 }; |
---|
[c11e31c] | 1642 | // |
---|
[de62360d] | 1643 | // The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA |
---|
| 1644 | // changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for |
---|
| 1645 | // field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to |
---|
| 1646 | // shift/reduce conflicts |
---|
[51b7345] | 1647 | |
---|
| 1648 | designation: |
---|
[4d51835] | 1649 | designator_list ':' // C99, CFA uses ":" instead of "=" |
---|
[2871210] | 1650 | | no_attr_identifier_or_type_name ':' // GCC, field name |
---|
| 1651 | { $$ = new VarRefNode( $1 ); } |
---|
[4d51835] | 1652 | ; |
---|
[51b7345] | 1653 | |
---|
[b87a5ed] | 1654 | designator_list: // C99 |
---|
[4d51835] | 1655 | designator |
---|
[2871210] | 1656 | | designator_list designator |
---|
| 1657 | { $$ = (ExpressionNode *)( $1->set_link( $2 )); } |
---|
[de62360d] | 1658 | //| designator_list designator { $$ = new CompositeExprNode( $1, $2 ); } |
---|
[4d51835] | 1659 | ; |
---|
[51b7345] | 1660 | |
---|
| 1661 | designator: |
---|
[2871210] | 1662 | '.' no_attr_identifier_or_type_name // C99, field name |
---|
[4d51835] | 1663 | { $$ = new VarRefNode( $2 ); } |
---|
| 1664 | | '[' push assignment_expression pop ']' // C99, single array element |
---|
[de62360d] | 1665 | // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple. |
---|
[4d51835] | 1666 | { $$ = $3; } |
---|
| 1667 | | '[' push subrange pop ']' // CFA, multiple array elements |
---|
| 1668 | { $$ = $3; } |
---|
| 1669 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements |
---|
[de62360d] | 1670 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $3, $5 ); } |
---|
[4d51835] | 1671 | | '.' '[' push field_list pop ']' // CFA, tuple field selector |
---|
| 1672 | { $$ = $4; } |
---|
| 1673 | ; |
---|
[51b7345] | 1674 | |
---|
[de62360d] | 1675 | // The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters, |
---|
| 1676 | // rather than an object-oriented type system. This required four groups of extensions: |
---|
[c11e31c] | 1677 | // |
---|
| 1678 | // Overloading: function, data, and operator identifiers may be overloaded. |
---|
| 1679 | // |
---|
[de62360d] | 1680 | // Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object |
---|
| 1681 | // and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide |
---|
| 1682 | // definitions of new types. Type declarations with storage class "extern" provide opaque types. |
---|
[c11e31c] | 1683 | // |
---|
[de62360d] | 1684 | // Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call |
---|
| 1685 | // site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
[c11e31c] | 1686 | // |
---|
| 1687 | // Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
[de62360d] | 1688 | // types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass |
---|
| 1689 | // hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or |
---|
| 1690 | // types provide the operations declared by a specification. Assertions are normally used to declare requirements |
---|
| 1691 | // on type arguments of polymorphic functions. |
---|
[c11e31c] | 1692 | |
---|
[b87a5ed] | 1693 | typegen_declaration_specifier: // CFA |
---|
[4d51835] | 1694 | typegen_type_specifier |
---|
| 1695 | | declaration_qualifier_list typegen_type_specifier |
---|
| 1696 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1697 | | typegen_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1698 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1699 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
| 1700 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1701 | ; |
---|
[b87a5ed] | 1702 | |
---|
| 1703 | typegen_type_specifier: // CFA |
---|
[2871210] | 1704 | typegen_name |
---|
| 1705 | | type_qualifier_list typegen_name |
---|
| 1706 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 1707 | | typegen_type_specifier type_qualifier |
---|
| 1708 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1709 | ; |
---|
[b87a5ed] | 1710 | |
---|
[2871210] | 1711 | typegen_name: // CFA |
---|
| 1712 | TYPEGENname '(' type_name_list ')' |
---|
| 1713 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
| 1714 | ; |
---|
| 1715 | |
---|
[b87a5ed] | 1716 | type_parameter_list: // CFA |
---|
[4d51835] | 1717 | type_parameter assignment_opt |
---|
| 1718 | | type_parameter_list ',' type_parameter assignment_opt |
---|
| 1719 | { $$ = $1->appendList( $3 ); } |
---|
| 1720 | ; |
---|
[b87a5ed] | 1721 | |
---|
| 1722 | type_parameter: // CFA |
---|
[2871210] | 1723 | type_class no_attr_identifier_or_type_name |
---|
| 1724 | { typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); } |
---|
[4d51835] | 1725 | assertion_list_opt |
---|
| 1726 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
| 1727 | | type_specifier identifier_parameter_declarator |
---|
| 1728 | ; |
---|
[b87a5ed] | 1729 | |
---|
| 1730 | type_class: // CFA |
---|
[4d51835] | 1731 | TYPE |
---|
| 1732 | { $$ = DeclarationNode::Type; } |
---|
| 1733 | | DTYPE |
---|
| 1734 | { $$ = DeclarationNode::Ftype; } |
---|
| 1735 | | FTYPE |
---|
| 1736 | { $$ = DeclarationNode::Dtype; } |
---|
| 1737 | ; |
---|
[b87a5ed] | 1738 | |
---|
| 1739 | assertion_list_opt: // CFA |
---|
[4d51835] | 1740 | // empty |
---|
| 1741 | { $$ = 0; } |
---|
| 1742 | | assertion_list_opt assertion |
---|
| 1743 | { $$ = $1 == 0 ? $2 : $1->appendList( $2 ); } |
---|
| 1744 | ; |
---|
[b87a5ed] | 1745 | |
---|
| 1746 | assertion: // CFA |
---|
[2871210] | 1747 | '|' no_attr_identifier_or_type_name '(' type_name_list ')' |
---|
[4d51835] | 1748 | { |
---|
[2871210] | 1749 | typedefTable.openContext( *$2 ); |
---|
[4d51835] | 1750 | $$ = DeclarationNode::newContextUse( $2, $4 ); |
---|
| 1751 | } |
---|
| 1752 | | '|' '{' push context_declaration_list '}' |
---|
| 1753 | { $$ = $4; } |
---|
| 1754 | | '|' '(' push type_parameter_list pop ')' '{' push context_declaration_list '}' '(' type_name_list ')' |
---|
| 1755 | { $$ = 0; } |
---|
| 1756 | ; |
---|
[b87a5ed] | 1757 | |
---|
| 1758 | type_name_list: // CFA |
---|
[4d51835] | 1759 | type_name |
---|
| 1760 | { $$ = new TypeValueNode( $1 ); } |
---|
| 1761 | | assignment_expression |
---|
| 1762 | | type_name_list ',' type_name |
---|
[de62360d] | 1763 | { $$ = (ExpressionNode *)( $1->set_link( new TypeValueNode( $3 ))); } |
---|
[4d51835] | 1764 | | type_name_list ',' assignment_expression |
---|
[de62360d] | 1765 | { $$ = (ExpressionNode *)( $1->set_link( $3 )); } |
---|
[4d51835] | 1766 | ; |
---|
[b87a5ed] | 1767 | |
---|
| 1768 | type_declaring_list: // CFA |
---|
[4d51835] | 1769 | TYPE type_declarator |
---|
| 1770 | { $$ = $2; } |
---|
| 1771 | | storage_class_list TYPE type_declarator |
---|
| 1772 | { $$ = $3->addQualifiers( $1 ); } |
---|
| 1773 | | type_declaring_list ',' type_declarator |
---|
| 1774 | { $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); } |
---|
| 1775 | ; |
---|
[b87a5ed] | 1776 | |
---|
| 1777 | type_declarator: // CFA |
---|
[4d51835] | 1778 | type_declarator_name assertion_list_opt |
---|
| 1779 | { $$ = $1->addAssertions( $2 ); } |
---|
| 1780 | | type_declarator_name assertion_list_opt '=' type_name |
---|
| 1781 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
| 1782 | ; |
---|
[b87a5ed] | 1783 | |
---|
| 1784 | type_declarator_name: // CFA |
---|
[2871210] | 1785 | no_attr_identifier_or_type_name |
---|
[4d51835] | 1786 | { |
---|
[de62360d] | 1787 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TD ); |
---|
[4d51835] | 1788 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
| 1789 | } |
---|
[2871210] | 1790 | | no_01_identifier_or_type_name '(' push type_parameter_list pop ')' |
---|
[4d51835] | 1791 | { |
---|
[de62360d] | 1792 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TG ); |
---|
[4d51835] | 1793 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
| 1794 | } |
---|
| 1795 | ; |
---|
[b87a5ed] | 1796 | |
---|
| 1797 | context_specifier: // CFA |
---|
[2871210] | 1798 | CONTEXT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}' |
---|
[4d51835] | 1799 | { |
---|
[de62360d] | 1800 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4d51835] | 1801 | $$ = DeclarationNode::newContext( $2, $5, 0 ); |
---|
| 1802 | } |
---|
[2871210] | 1803 | | CONTEXT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' |
---|
[4d51835] | 1804 | { |
---|
[de62360d] | 1805 | typedefTable.enterContext( *$2 ); |
---|
[4d51835] | 1806 | typedefTable.enterScope(); |
---|
| 1807 | } |
---|
| 1808 | context_declaration_list '}' |
---|
| 1809 | { |
---|
| 1810 | typedefTable.leaveContext(); |
---|
[de62360d] | 1811 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4d51835] | 1812 | $$ = DeclarationNode::newContext( $2, $5, $10 ); |
---|
| 1813 | } |
---|
| 1814 | ; |
---|
[b87a5ed] | 1815 | |
---|
| 1816 | context_declaration_list: // CFA |
---|
[4d51835] | 1817 | context_declaration |
---|
| 1818 | | context_declaration_list push context_declaration |
---|
| 1819 | { $$ = $1->appendList( $3 ); } |
---|
| 1820 | ; |
---|
[b87a5ed] | 1821 | |
---|
| 1822 | context_declaration: // CFA |
---|
[4d51835] | 1823 | new_context_declaring_list pop ';' |
---|
| 1824 | | context_declaring_list pop ';' |
---|
| 1825 | ; |
---|
[b87a5ed] | 1826 | |
---|
| 1827 | new_context_declaring_list: // CFA |
---|
[4d51835] | 1828 | new_variable_specifier |
---|
| 1829 | { |
---|
| 1830 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1831 | $$ = $1; |
---|
| 1832 | } |
---|
| 1833 | | new_function_specifier |
---|
| 1834 | { |
---|
| 1835 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1836 | $$ = $1; |
---|
| 1837 | } |
---|
[2871210] | 1838 | | new_context_declaring_list pop ',' push identifier_or_type_name |
---|
[4d51835] | 1839 | { |
---|
[de62360d] | 1840 | typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID ); |
---|
[4d51835] | 1841 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1842 | } |
---|
| 1843 | ; |
---|
[b87a5ed] | 1844 | |
---|
| 1845 | context_declaring_list: // CFA |
---|
[4d51835] | 1846 | type_specifier declarator |
---|
| 1847 | { |
---|
| 1848 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1849 | $$ = $2->addType( $1 ); |
---|
| 1850 | } |
---|
| 1851 | | context_declaring_list pop ',' push declarator |
---|
| 1852 | { |
---|
| 1853 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1854 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
| 1855 | } |
---|
| 1856 | ; |
---|
[51b7345] | 1857 | |
---|
[c11e31c] | 1858 | //***************************** EXTERNAL DEFINITIONS ***************************** |
---|
[51b7345] | 1859 | |
---|
| 1860 | translation_unit: |
---|
[4d51835] | 1861 | // empty |
---|
| 1862 | {} // empty input file |
---|
| 1863 | | external_definition_list |
---|
| 1864 | { |
---|
| 1865 | if ( theTree ) { |
---|
| 1866 | theTree->appendList( $1 ); |
---|
| 1867 | } else { |
---|
| 1868 | theTree = $1; |
---|
| 1869 | } |
---|
| 1870 | } |
---|
| 1871 | ; |
---|
[51b7345] | 1872 | |
---|
| 1873 | external_definition_list: |
---|
[4d51835] | 1874 | external_definition |
---|
| 1875 | | external_definition_list push external_definition |
---|
[de62360d] | 1876 | { $$ = ( $1 != NULL ) ? $1->appendList( $3 ) : $3; } |
---|
[4d51835] | 1877 | ; |
---|
[51b7345] | 1878 | |
---|
| 1879 | external_definition_list_opt: |
---|
[4d51835] | 1880 | // empty |
---|
| 1881 | { $$ = 0; } |
---|
| 1882 | | external_definition_list |
---|
| 1883 | ; |
---|
[51b7345] | 1884 | |
---|
| 1885 | external_definition: |
---|
[4d51835] | 1886 | declaration |
---|
| 1887 | | external_function_definition |
---|
| 1888 | | asm_statement // GCC, global assembler statement |
---|
| 1889 | {} |
---|
| 1890 | | EXTERN STRINGliteral |
---|
| 1891 | { |
---|
| 1892 | linkageStack.push( linkage ); |
---|
| 1893 | linkage = LinkageSpec::fromString( *$2 ); |
---|
| 1894 | } |
---|
| 1895 | '{' external_definition_list_opt '}' // C++-style linkage specifier |
---|
| 1896 | { |
---|
| 1897 | linkage = linkageStack.top(); |
---|
| 1898 | linkageStack.pop(); |
---|
| 1899 | $$ = $5; |
---|
| 1900 | } |
---|
| 1901 | | EXTENSION external_definition |
---|
| 1902 | { $$ = $2; } |
---|
| 1903 | ; |
---|
| 1904 | |
---|
| 1905 | external_function_definition: |
---|
| 1906 | function_definition |
---|
[de62360d] | 1907 | // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of |
---|
| 1908 | // code with functions missing a type-specifier on the return type. Parsing is possible because |
---|
| 1909 | // function_definition does not appear in the context of an expression (nested functions would preclude this |
---|
| 1910 | // concession). A function prototype declaration must still have a type_specifier. OBSOLESCENT (see 1) |
---|
[4d51835] | 1911 | | function_declarator compound_statement |
---|
| 1912 | { |
---|
| 1913 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1914 | typedefTable.leaveScope(); |
---|
| 1915 | $$ = $1->addFunctionBody( $2 ); |
---|
| 1916 | } |
---|
| 1917 | | old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1918 | { |
---|
| 1919 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1920 | typedefTable.leaveScope(); |
---|
| 1921 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
| 1922 | } |
---|
| 1923 | ; |
---|
[51b7345] | 1924 | |
---|
| 1925 | function_definition: |
---|
[4d51835] | 1926 | new_function_declaration compound_statement // CFA |
---|
| 1927 | { |
---|
| 1928 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1929 | typedefTable.leaveScope(); |
---|
| 1930 | $$ = $1->addFunctionBody( $2 ); |
---|
| 1931 | } |
---|
| 1932 | | declaration_specifier function_declarator compound_statement |
---|
| 1933 | { |
---|
| 1934 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1935 | typedefTable.leaveScope(); |
---|
| 1936 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
| 1937 | } |
---|
| 1938 | | type_qualifier_list function_declarator compound_statement |
---|
| 1939 | { |
---|
| 1940 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1941 | typedefTable.leaveScope(); |
---|
| 1942 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 1943 | } |
---|
| 1944 | | declaration_qualifier_list function_declarator compound_statement |
---|
| 1945 | { |
---|
| 1946 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1947 | typedefTable.leaveScope(); |
---|
| 1948 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 1949 | } |
---|
| 1950 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
| 1951 | { |
---|
| 1952 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1953 | typedefTable.leaveScope(); |
---|
| 1954 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 1955 | } |
---|
| 1956 | |
---|
| 1957 | // Old-style K&R function definition, OBSOLESCENT (see 4) |
---|
| 1958 | | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1959 | { |
---|
| 1960 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1961 | typedefTable.leaveScope(); |
---|
| 1962 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
| 1963 | } |
---|
| 1964 | | type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1965 | { |
---|
| 1966 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1967 | typedefTable.leaveScope(); |
---|
| 1968 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 1969 | } |
---|
| 1970 | |
---|
| 1971 | // Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) |
---|
| 1972 | | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1973 | { |
---|
| 1974 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1975 | typedefTable.leaveScope(); |
---|
| 1976 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 1977 | } |
---|
| 1978 | | declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1979 | { |
---|
| 1980 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1981 | typedefTable.leaveScope(); |
---|
| 1982 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 1983 | } |
---|
| 1984 | ; |
---|
[51b7345] | 1985 | |
---|
| 1986 | declarator: |
---|
[4d51835] | 1987 | variable_declarator |
---|
| 1988 | | function_declarator |
---|
[2871210] | 1989 | | type_redeclarator |
---|
[4d51835] | 1990 | ; |
---|
[51b7345] | 1991 | |
---|
| 1992 | subrange: |
---|
[4d51835] | 1993 | constant_expression '~' constant_expression // CFA, integer subrange |
---|
[de62360d] | 1994 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); } |
---|
[4d51835] | 1995 | ; |
---|
[b87a5ed] | 1996 | |
---|
| 1997 | asm_name_opt: // GCC |
---|
[4d51835] | 1998 | // empty |
---|
| 1999 | | ASM '(' string_literal_list ')' attribute_list_opt |
---|
| 2000 | ; |
---|
[b87a5ed] | 2001 | |
---|
| 2002 | attribute_list_opt: // GCC |
---|
[4d51835] | 2003 | // empty |
---|
[1db21619] | 2004 | { $$ = 0; } |
---|
[4d51835] | 2005 | | attribute_list |
---|
| 2006 | ; |
---|
[b87a5ed] | 2007 | |
---|
| 2008 | attribute_list: // GCC |
---|
[4d51835] | 2009 | attribute |
---|
| 2010 | | attribute_list attribute |
---|
[1db21619] | 2011 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 2012 | ; |
---|
[b87a5ed] | 2013 | |
---|
| 2014 | attribute: // GCC |
---|
[4d51835] | 2015 | ATTRIBUTE '(' '(' attribute_parameter_list ')' ')' |
---|
[1db21619] | 2016 | // { $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
| 2017 | { $$ = 0; } |
---|
[4d51835] | 2018 | ; |
---|
[b87a5ed] | 2019 | |
---|
| 2020 | attribute_parameter_list: // GCC |
---|
[4d51835] | 2021 | attrib |
---|
| 2022 | | attribute_parameter_list ',' attrib |
---|
| 2023 | ; |
---|
[b87a5ed] | 2024 | |
---|
| 2025 | attrib: // GCC |
---|
[4d51835] | 2026 | // empty |
---|
| 2027 | | any_word |
---|
| 2028 | | any_word '(' comma_expression_opt ')' |
---|
| 2029 | ; |
---|
[b87a5ed] | 2030 | |
---|
| 2031 | any_word: // GCC |
---|
[2871210] | 2032 | identifier_or_type_name {} |
---|
[4d51835] | 2033 | | storage_class_name {} |
---|
| 2034 | | basic_type_name {} |
---|
| 2035 | | type_qualifier {} |
---|
| 2036 | ; |
---|
[51b7345] | 2037 | |
---|
[c11e31c] | 2038 | // ============================================================================ |
---|
[de62360d] | 2039 | // The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary |
---|
| 2040 | // because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as |
---|
| 2041 | // in: |
---|
[c11e31c] | 2042 | // |
---|
[b87a5ed] | 2043 | // int (*f())[10] { ... }; |
---|
| 2044 | // ... (*f())[3] += 1; // definition mimics usage |
---|
[c11e31c] | 2045 | // |
---|
[de62360d] | 2046 | // Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of |
---|
| 2047 | // the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context. |
---|
[c11e31c] | 2048 | // ============================================================================ |
---|
| 2049 | |
---|
| 2050 | // ---------------------------------------------------------------------------- |
---|
[de62360d] | 2051 | // The set of valid declarators before a compound statement for defining a function is less than the set of declarators |
---|
| 2052 | // to define a variable or function prototype, e.g.: |
---|
[c11e31c] | 2053 | // |
---|
[b87a5ed] | 2054 | // valid declaration invalid definition |
---|
| 2055 | // ----------------- ------------------ |
---|
[4d51835] | 2056 | // int f; int f {} |
---|
| 2057 | // int *f; int *f {} |
---|
[b87a5ed] | 2058 | // int f[10]; int f[10] {} |
---|
[4d51835] | 2059 | // int (*f)(int); int (*f)(int) {} |
---|
[c11e31c] | 2060 | // |
---|
[de62360d] | 2061 | // To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence |
---|
| 2062 | // variable_declarator and function_declarator. |
---|
[c11e31c] | 2063 | // ---------------------------------------------------------------------------- |
---|
| 2064 | |
---|
[de62360d] | 2065 | // This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes |
---|
| 2066 | // declaring an array of functions versus a pointer to an array of functions. |
---|
[51b7345] | 2067 | |
---|
| 2068 | variable_declarator: |
---|
[4d51835] | 2069 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2070 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2071 | | variable_ptr |
---|
| 2072 | | variable_array attribute_list_opt |
---|
[1db21619] | 2073 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2074 | | variable_function attribute_list_opt |
---|
[1db21619] | 2075 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2076 | ; |
---|
[51b7345] | 2077 | |
---|
| 2078 | paren_identifier: |
---|
[4d51835] | 2079 | identifier |
---|
| 2080 | { |
---|
[de62360d] | 2081 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2082 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2083 | } |
---|
| 2084 | | '(' paren_identifier ')' // redundant parenthesis |
---|
| 2085 | { $$ = $2; } |
---|
| 2086 | ; |
---|
[51b7345] | 2087 | |
---|
| 2088 | variable_ptr: |
---|
[4d51835] | 2089 | '*' variable_declarator |
---|
| 2090 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2091 | | '*' type_qualifier_list variable_declarator |
---|
| 2092 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2093 | | '(' variable_ptr ')' |
---|
| 2094 | { $$ = $2; } |
---|
| 2095 | ; |
---|
[51b7345] | 2096 | |
---|
| 2097 | variable_array: |
---|
[4d51835] | 2098 | paren_identifier array_dimension |
---|
| 2099 | { $$ = $1->addArray( $2 ); } |
---|
| 2100 | | '(' variable_ptr ')' array_dimension |
---|
| 2101 | { $$ = $2->addArray( $4 ); } |
---|
| 2102 | | '(' variable_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2103 | { $$ = $2->addArray( $4 ); } |
---|
| 2104 | | '(' variable_array ')' // redundant parenthesis |
---|
| 2105 | { $$ = $2; } |
---|
| 2106 | ; |
---|
[51b7345] | 2107 | |
---|
| 2108 | variable_function: |
---|
[4d51835] | 2109 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2110 | { $$ = $2->addParamList( $6 ); } |
---|
| 2111 | | '(' variable_function ')' // redundant parenthesis |
---|
| 2112 | { $$ = $2; } |
---|
| 2113 | ; |
---|
[51b7345] | 2114 | |
---|
[de62360d] | 2115 | // This pattern parses a function declarator that is not redefining a typedef name. Because functions cannot be nested, |
---|
| 2116 | // there is no context where a function definition can redefine a typedef name. To allow nested functions requires |
---|
[2871210] | 2117 | // further separation of variable and function declarators in type_redeclarator. The pattern precludes returning |
---|
[de62360d] | 2118 | // arrays and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2119 | |
---|
| 2120 | function_declarator: |
---|
[4d51835] | 2121 | function_no_ptr attribute_list_opt |
---|
[1db21619] | 2122 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2123 | | function_ptr |
---|
| 2124 | | function_array attribute_list_opt |
---|
[1db21619] | 2125 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2126 | ; |
---|
[51b7345] | 2127 | |
---|
| 2128 | function_no_ptr: |
---|
[4d51835] | 2129 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2130 | { $$ = $1->addParamList( $4 ); } |
---|
| 2131 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2132 | { $$ = $2->addParamList( $6 ); } |
---|
| 2133 | | '(' function_no_ptr ')' // redundant parenthesis |
---|
| 2134 | { $$ = $2; } |
---|
| 2135 | ; |
---|
[51b7345] | 2136 | |
---|
| 2137 | function_ptr: |
---|
[4d51835] | 2138 | '*' function_declarator |
---|
| 2139 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2140 | | '*' type_qualifier_list function_declarator |
---|
| 2141 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2142 | | '(' function_ptr ')' |
---|
| 2143 | { $$ = $2; } |
---|
| 2144 | ; |
---|
[51b7345] | 2145 | |
---|
| 2146 | function_array: |
---|
[4d51835] | 2147 | '(' function_ptr ')' array_dimension |
---|
| 2148 | { $$ = $2->addArray( $4 ); } |
---|
| 2149 | | '(' function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2150 | { $$ = $2->addArray( $4 ); } |
---|
| 2151 | | '(' function_array ')' // redundant parenthesis |
---|
| 2152 | { $$ = $2; } |
---|
| 2153 | ; |
---|
[51b7345] | 2154 | |
---|
[de62360d] | 2155 | // This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a typedef name |
---|
| 2156 | // (see function_declarator for additional comments). The pattern precludes returning arrays and functions versus |
---|
| 2157 | // pointers to arrays and functions. |
---|
[51b7345] | 2158 | |
---|
| 2159 | old_function_declarator: |
---|
[4d51835] | 2160 | old_function_no_ptr |
---|
| 2161 | | old_function_ptr |
---|
| 2162 | | old_function_array |
---|
| 2163 | ; |
---|
[51b7345] | 2164 | |
---|
| 2165 | old_function_no_ptr: |
---|
[4d51835] | 2166 | paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter |
---|
| 2167 | { $$ = $1->addIdList( $3 ); } |
---|
| 2168 | | '(' old_function_ptr ')' '(' identifier_list ')' |
---|
| 2169 | { $$ = $2->addIdList( $5 ); } |
---|
| 2170 | | '(' old_function_no_ptr ')' // redundant parenthesis |
---|
| 2171 | { $$ = $2; } |
---|
| 2172 | ; |
---|
[51b7345] | 2173 | |
---|
| 2174 | old_function_ptr: |
---|
[4d51835] | 2175 | '*' old_function_declarator |
---|
| 2176 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2177 | | '*' type_qualifier_list old_function_declarator |
---|
| 2178 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2179 | | '(' old_function_ptr ')' |
---|
| 2180 | { $$ = $2; } |
---|
| 2181 | ; |
---|
[51b7345] | 2182 | |
---|
| 2183 | old_function_array: |
---|
[4d51835] | 2184 | '(' old_function_ptr ')' array_dimension |
---|
| 2185 | { $$ = $2->addArray( $4 ); } |
---|
| 2186 | | '(' old_function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2187 | { $$ = $2->addArray( $4 ); } |
---|
| 2188 | | '(' old_function_array ')' // redundant parenthesis |
---|
| 2189 | { $$ = $2; } |
---|
| 2190 | ; |
---|
[51b7345] | 2191 | |
---|
[2871210] | 2192 | // This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.: |
---|
[c11e31c] | 2193 | // |
---|
[b87a5ed] | 2194 | // typedef int foo; |
---|
| 2195 | // { |
---|
| 2196 | // int foo; // redefine typedef name in new scope |
---|
| 2197 | // } |
---|
[c11e31c] | 2198 | // |
---|
[de62360d] | 2199 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2200 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2201 | |
---|
[2871210] | 2202 | type_redeclarator: |
---|
| 2203 | paren_type attribute_list_opt |
---|
[1db21619] | 2204 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2205 | | type_ptr |
---|
| 2206 | | type_array attribute_list_opt |
---|
[1db21619] | 2207 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2208 | | type_function attribute_list_opt |
---|
[1db21619] | 2209 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2210 | ; |
---|
[51b7345] | 2211 | |
---|
[2871210] | 2212 | paren_type: |
---|
| 2213 | typedef |
---|
| 2214 | | '(' paren_type ')' |
---|
[4d51835] | 2215 | { $$ = $2; } |
---|
| 2216 | ; |
---|
[51b7345] | 2217 | |
---|
[2871210] | 2218 | type_ptr: |
---|
| 2219 | '*' type_redeclarator |
---|
[4d51835] | 2220 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[2871210] | 2221 | | '*' type_qualifier_list type_redeclarator |
---|
[4d51835] | 2222 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2223 | | '(' type_ptr ')' |
---|
[4d51835] | 2224 | { $$ = $2; } |
---|
| 2225 | ; |
---|
[51b7345] | 2226 | |
---|
[2871210] | 2227 | type_array: |
---|
| 2228 | paren_type array_dimension |
---|
[4d51835] | 2229 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2230 | | '(' type_ptr ')' array_dimension |
---|
[4d51835] | 2231 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2232 | | '(' type_array ')' multi_array_dimension // redundant parenthesis |
---|
[4d51835] | 2233 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2234 | | '(' type_array ')' // redundant parenthesis |
---|
[4d51835] | 2235 | { $$ = $2; } |
---|
| 2236 | ; |
---|
[51b7345] | 2237 | |
---|
[2871210] | 2238 | type_function: |
---|
| 2239 | paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2240 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2241 | | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2242 | { $$ = $2->addParamList( $6 ); } |
---|
[2871210] | 2243 | | '(' type_function ')' // redundant parenthesis |
---|
[4d51835] | 2244 | { $$ = $2; } |
---|
| 2245 | ; |
---|
[51b7345] | 2246 | |
---|
[de62360d] | 2247 | // This pattern parses a declaration for a parameter variable or function prototype that is not redefining a typedef |
---|
| 2248 | // name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes declaring an |
---|
| 2249 | // array of functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to |
---|
| 2250 | // arrays and functions. |
---|
[51b7345] | 2251 | |
---|
| 2252 | identifier_parameter_declarator: |
---|
[4d51835] | 2253 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2254 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2255 | | identifier_parameter_ptr |
---|
| 2256 | | identifier_parameter_array attribute_list_opt |
---|
[1db21619] | 2257 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2258 | | identifier_parameter_function attribute_list_opt |
---|
[1db21619] | 2259 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2260 | ; |
---|
[51b7345] | 2261 | |
---|
| 2262 | identifier_parameter_ptr: |
---|
[4d51835] | 2263 | '*' identifier_parameter_declarator |
---|
| 2264 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2265 | | '*' type_qualifier_list identifier_parameter_declarator |
---|
| 2266 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2267 | | '(' identifier_parameter_ptr ')' |
---|
| 2268 | { $$ = $2; } |
---|
| 2269 | ; |
---|
[51b7345] | 2270 | |
---|
| 2271 | identifier_parameter_array: |
---|
[4d51835] | 2272 | paren_identifier array_parameter_dimension |
---|
| 2273 | { $$ = $1->addArray( $2 ); } |
---|
| 2274 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
| 2275 | { $$ = $2->addArray( $4 ); } |
---|
| 2276 | | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2277 | { $$ = $2->addArray( $4 ); } |
---|
| 2278 | | '(' identifier_parameter_array ')' // redundant parenthesis |
---|
| 2279 | { $$ = $2; } |
---|
| 2280 | ; |
---|
[51b7345] | 2281 | |
---|
| 2282 | identifier_parameter_function: |
---|
[4d51835] | 2283 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2284 | { $$ = $1->addParamList( $4 ); } |
---|
| 2285 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2286 | { $$ = $2->addParamList( $6 ); } |
---|
| 2287 | | '(' identifier_parameter_function ')' // redundant parenthesis |
---|
| 2288 | { $$ = $2; } |
---|
| 2289 | ; |
---|
[b87a5ed] | 2290 | |
---|
[de62360d] | 2291 | // This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name, |
---|
| 2292 | // e.g.: |
---|
[c11e31c] | 2293 | // |
---|
[b87a5ed] | 2294 | // typedef int foo; |
---|
| 2295 | // int f( int foo ); // redefine typedef name in new scope |
---|
[c11e31c] | 2296 | // |
---|
[de62360d] | 2297 | // and allows the C99 array options, which can only appear in a parameter list. In addition, the pattern handles the |
---|
| 2298 | // special meaning of parenthesis around a typedef name: |
---|
[c11e31c] | 2299 | // |
---|
[b87a5ed] | 2300 | // ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
| 2301 | // parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
| 2302 | // not as redundant parentheses around the identifier." |
---|
[c11e31c] | 2303 | // |
---|
| 2304 | // which precludes the following cases: |
---|
| 2305 | // |
---|
[b87a5ed] | 2306 | // typedef float T; |
---|
[4d51835] | 2307 | // int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
[b87a5ed] | 2308 | // int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
| 2309 | // int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
| 2310 | // int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
[c11e31c] | 2311 | // |
---|
[de62360d] | 2312 | // In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and |
---|
| 2313 | // not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of |
---|
| 2314 | // functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and |
---|
| 2315 | // functions. |
---|
[51b7345] | 2316 | |
---|
[2871210] | 2317 | type_parameter_redeclarator: |
---|
[4d51835] | 2318 | typedef attribute_list_opt |
---|
[1db21619] | 2319 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2320 | | type_parameter_ptr |
---|
| 2321 | | type_parameter_array attribute_list_opt |
---|
[1db21619] | 2322 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2323 | | type_parameter_function attribute_list_opt |
---|
[1db21619] | 2324 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2325 | ; |
---|
[51b7345] | 2326 | |
---|
| 2327 | typedef: |
---|
[4d51835] | 2328 | TYPEDEFname |
---|
| 2329 | { |
---|
[de62360d] | 2330 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2331 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2332 | } |
---|
[2871210] | 2333 | | TYPEGENname |
---|
| 2334 | { |
---|
| 2335 | typedefTable.setNextIdentifier( *$1 ); |
---|
| 2336 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2337 | } |
---|
[4d51835] | 2338 | ; |
---|
[51b7345] | 2339 | |
---|
[2871210] | 2340 | type_parameter_ptr: |
---|
| 2341 | '*' type_parameter_redeclarator |
---|
[4d51835] | 2342 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[2871210] | 2343 | | '*' type_qualifier_list type_parameter_redeclarator |
---|
[4d51835] | 2344 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2345 | | '(' type_parameter_ptr ')' |
---|
[4d51835] | 2346 | { $$ = $2; } |
---|
| 2347 | ; |
---|
[51b7345] | 2348 | |
---|
[2871210] | 2349 | type_parameter_array: |
---|
[4d51835] | 2350 | typedef array_parameter_dimension |
---|
| 2351 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2352 | | '(' type_parameter_ptr ')' array_parameter_dimension |
---|
[4d51835] | 2353 | { $$ = $2->addArray( $4 ); } |
---|
| 2354 | ; |
---|
[51b7345] | 2355 | |
---|
[2871210] | 2356 | type_parameter_function: |
---|
[4d51835] | 2357 | typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2358 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2359 | | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2360 | { $$ = $2->addParamList( $6 ); } |
---|
| 2361 | ; |
---|
[b87a5ed] | 2362 | |
---|
[de62360d] | 2363 | // This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to |
---|
| 2364 | // which the type applies, e.g.: |
---|
[c11e31c] | 2365 | // |
---|
[b87a5ed] | 2366 | // sizeof( int ); |
---|
| 2367 | // sizeof( int [10] ); |
---|
[c11e31c] | 2368 | // |
---|
[de62360d] | 2369 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2370 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2371 | |
---|
| 2372 | abstract_declarator: |
---|
[4d51835] | 2373 | abstract_ptr |
---|
| 2374 | | abstract_array attribute_list_opt |
---|
[1db21619] | 2375 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2376 | | abstract_function attribute_list_opt |
---|
[1db21619] | 2377 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2378 | ; |
---|
[51b7345] | 2379 | |
---|
| 2380 | abstract_ptr: |
---|
[4d51835] | 2381 | '*' |
---|
| 2382 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2383 | | '*' type_qualifier_list |
---|
| 2384 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2385 | | '*' abstract_declarator |
---|
| 2386 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2387 | | '*' type_qualifier_list abstract_declarator |
---|
| 2388 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2389 | | '(' abstract_ptr ')' |
---|
| 2390 | { $$ = $2; } |
---|
| 2391 | ; |
---|
[51b7345] | 2392 | |
---|
| 2393 | abstract_array: |
---|
[4d51835] | 2394 | array_dimension |
---|
| 2395 | | '(' abstract_ptr ')' array_dimension |
---|
| 2396 | { $$ = $2->addArray( $4 ); } |
---|
| 2397 | | '(' abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2398 | { $$ = $2->addArray( $4 ); } |
---|
| 2399 | | '(' abstract_array ')' // redundant parenthesis |
---|
| 2400 | { $$ = $2; } |
---|
| 2401 | ; |
---|
[51b7345] | 2402 | |
---|
| 2403 | abstract_function: |
---|
[4d51835] | 2404 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2405 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2406 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2407 | { $$ = $2->addParamList( $6 ); } |
---|
| 2408 | | '(' abstract_function ')' // redundant parenthesis |
---|
| 2409 | { $$ = $2; } |
---|
| 2410 | ; |
---|
[51b7345] | 2411 | |
---|
| 2412 | array_dimension: |
---|
[4d51835] | 2413 | // Only the first dimension can be empty. |
---|
[2871210] | 2414 | '[' ']' |
---|
[4d51835] | 2415 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
[2871210] | 2416 | | '[' ']' multi_array_dimension |
---|
| 2417 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); } |
---|
[4d51835] | 2418 | | multi_array_dimension |
---|
| 2419 | ; |
---|
[51b7345] | 2420 | |
---|
| 2421 | multi_array_dimension: |
---|
[4d51835] | 2422 | '[' push assignment_expression pop ']' |
---|
| 2423 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
| 2424 | | '[' push '*' pop ']' // C99 |
---|
| 2425 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
| 2426 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
| 2427 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
| 2428 | | multi_array_dimension '[' push '*' pop ']' // C99 |
---|
| 2429 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
| 2430 | ; |
---|
[51b7345] | 2431 | |
---|
[c11e31c] | 2432 | // This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
| 2433 | // identifier to which the type applies, e.g.: |
---|
| 2434 | // |
---|
[b87a5ed] | 2435 | // int f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2436 | // int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2437 | // |
---|
[de62360d] | 2438 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2439 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2440 | |
---|
| 2441 | abstract_parameter_declarator: |
---|
[4d51835] | 2442 | abstract_parameter_ptr |
---|
| 2443 | | abstract_parameter_array attribute_list_opt |
---|
[1db21619] | 2444 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2445 | | abstract_parameter_function attribute_list_opt |
---|
[1db21619] | 2446 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2447 | ; |
---|
[51b7345] | 2448 | |
---|
| 2449 | abstract_parameter_ptr: |
---|
[4d51835] | 2450 | '*' |
---|
| 2451 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2452 | | '*' type_qualifier_list |
---|
| 2453 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2454 | | '*' abstract_parameter_declarator |
---|
| 2455 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2456 | | '*' type_qualifier_list abstract_parameter_declarator |
---|
| 2457 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2458 | | '(' abstract_parameter_ptr ')' |
---|
| 2459 | { $$ = $2; } |
---|
| 2460 | ; |
---|
[51b7345] | 2461 | |
---|
| 2462 | abstract_parameter_array: |
---|
[4d51835] | 2463 | array_parameter_dimension |
---|
| 2464 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
| 2465 | { $$ = $2->addArray( $4 ); } |
---|
| 2466 | | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2467 | { $$ = $2->addArray( $4 ); } |
---|
| 2468 | | '(' abstract_parameter_array ')' // redundant parenthesis |
---|
| 2469 | { $$ = $2; } |
---|
| 2470 | ; |
---|
[51b7345] | 2471 | |
---|
| 2472 | abstract_parameter_function: |
---|
[4d51835] | 2473 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2474 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2475 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2476 | { $$ = $2->addParamList( $6 ); } |
---|
| 2477 | | '(' abstract_parameter_function ')' // redundant parenthesis |
---|
| 2478 | { $$ = $2; } |
---|
| 2479 | ; |
---|
[51b7345] | 2480 | |
---|
| 2481 | array_parameter_dimension: |
---|
[4d51835] | 2482 | // Only the first dimension can be empty or have qualifiers. |
---|
| 2483 | array_parameter_1st_dimension |
---|
| 2484 | | array_parameter_1st_dimension multi_array_dimension |
---|
| 2485 | { $$ = $1->addArray( $2 ); } |
---|
| 2486 | | multi_array_dimension |
---|
| 2487 | ; |
---|
[51b7345] | 2488 | |
---|
[c11e31c] | 2489 | // The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
| 2490 | // |
---|
[de62360d] | 2491 | // ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in |
---|
| 2492 | // a declaration of a function parameter with an array type, and then only in the outermost array type derivation." |
---|
[51b7345] | 2493 | |
---|
| 2494 | array_parameter_1st_dimension: |
---|
[2871210] | 2495 | '[' ']' |
---|
[4d51835] | 2496 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
| 2497 | // multi_array_dimension handles the '[' '*' ']' case |
---|
| 2498 | | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2499 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2500 | | '[' push type_qualifier_list pop ']' |
---|
| 2501 | { $$ = DeclarationNode::newArray( 0, $3, false ); } |
---|
| 2502 | // multi_array_dimension handles the '[' assignment_expression ']' case |
---|
| 2503 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2504 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2505 | | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']' |
---|
| 2506 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
| 2507 | | '[' push type_qualifier_list STATIC assignment_expression pop ']' |
---|
| 2508 | { $$ = DeclarationNode::newArray( $5, $3, true ); } |
---|
| 2509 | ; |
---|
[b87a5ed] | 2510 | |
---|
[de62360d] | 2511 | // This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type applies, |
---|
| 2512 | // e.g.: |
---|
[c11e31c] | 2513 | // |
---|
[b87a5ed] | 2514 | // sizeof( int ); // abstract variable; no identifier name specified |
---|
[c11e31c] | 2515 | // |
---|
[de62360d] | 2516 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2517 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2518 | |
---|
| 2519 | variable_abstract_declarator: |
---|
[4d51835] | 2520 | variable_abstract_ptr |
---|
| 2521 | | variable_abstract_array attribute_list_opt |
---|
[1db21619] | 2522 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2523 | | variable_abstract_function attribute_list_opt |
---|
[1db21619] | 2524 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2525 | ; |
---|
[51b7345] | 2526 | |
---|
| 2527 | variable_abstract_ptr: |
---|
[4d51835] | 2528 | '*' |
---|
| 2529 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2530 | | '*' type_qualifier_list |
---|
| 2531 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2532 | | '*' variable_abstract_declarator |
---|
| 2533 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2534 | | '*' type_qualifier_list variable_abstract_declarator |
---|
| 2535 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2536 | | '(' variable_abstract_ptr ')' |
---|
| 2537 | { $$ = $2; } |
---|
| 2538 | ; |
---|
[51b7345] | 2539 | |
---|
| 2540 | variable_abstract_array: |
---|
[4d51835] | 2541 | array_dimension |
---|
| 2542 | | '(' variable_abstract_ptr ')' array_dimension |
---|
| 2543 | { $$ = $2->addArray( $4 ); } |
---|
| 2544 | | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2545 | { $$ = $2->addArray( $4 ); } |
---|
| 2546 | | '(' variable_abstract_array ')' // redundant parenthesis |
---|
| 2547 | { $$ = $2; } |
---|
| 2548 | ; |
---|
[51b7345] | 2549 | |
---|
| 2550 | variable_abstract_function: |
---|
[4d51835] | 2551 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2552 | { $$ = $2->addParamList( $6 ); } |
---|
| 2553 | | '(' variable_abstract_function ')' // redundant parenthesis |
---|
| 2554 | { $$ = $2; } |
---|
| 2555 | ; |
---|
[b87a5ed] | 2556 | |
---|
[de62360d] | 2557 | // This pattern parses a new-style declaration for a parameter variable or function prototype that is either an |
---|
| 2558 | // identifier or typedef name and allows the C99 array options, which can only appear in a parameter list. |
---|
[b87a5ed] | 2559 | |
---|
| 2560 | new_identifier_parameter_declarator_tuple: // CFA |
---|
[4d51835] | 2561 | new_identifier_parameter_declarator_no_tuple |
---|
| 2562 | | new_abstract_tuple |
---|
| 2563 | | type_qualifier_list new_abstract_tuple |
---|
| 2564 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2565 | ; |
---|
[b87a5ed] | 2566 | |
---|
| 2567 | new_identifier_parameter_declarator_no_tuple: // CFA |
---|
[4d51835] | 2568 | new_identifier_parameter_ptr |
---|
| 2569 | | new_identifier_parameter_array |
---|
| 2570 | ; |
---|
[b87a5ed] | 2571 | |
---|
| 2572 | new_identifier_parameter_ptr: // CFA |
---|
[4d51835] | 2573 | '*' type_specifier |
---|
| 2574 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2575 | | type_qualifier_list '*' type_specifier |
---|
| 2576 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2577 | | '*' new_abstract_function |
---|
| 2578 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2579 | | type_qualifier_list '*' new_abstract_function |
---|
| 2580 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2581 | | '*' new_identifier_parameter_declarator_tuple |
---|
| 2582 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2583 | | type_qualifier_list '*' new_identifier_parameter_declarator_tuple |
---|
| 2584 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2585 | ; |
---|
[b87a5ed] | 2586 | |
---|
| 2587 | new_identifier_parameter_array: // CFA |
---|
[de62360d] | 2588 | // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to |
---|
| 2589 | // shift/reduce conflict with new-style empty (void) function return type. |
---|
[2871210] | 2590 | '[' ']' type_specifier |
---|
| 2591 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2592 | | new_array_parameter_1st_dimension type_specifier |
---|
| 2593 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2594 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2595 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2596 | | new_array_parameter_1st_dimension multi_array_dimension type_specifier |
---|
| 2597 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2598 | | multi_array_dimension type_specifier |
---|
| 2599 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2600 | | '[' ']' new_identifier_parameter_ptr |
---|
| 2601 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2602 | | new_array_parameter_1st_dimension new_identifier_parameter_ptr |
---|
| 2603 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2604 | | '[' ']' multi_array_dimension new_identifier_parameter_ptr |
---|
| 2605 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2606 | | new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr |
---|
| 2607 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2608 | | multi_array_dimension new_identifier_parameter_ptr |
---|
| 2609 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2610 | ; |
---|
[51b7345] | 2611 | |
---|
| 2612 | new_array_parameter_1st_dimension: |
---|
[4d51835] | 2613 | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2614 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2615 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2616 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2617 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
| 2618 | // declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
| 2619 | // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot |
---|
| 2620 | // appear in this context. |
---|
| 2621 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
| 2622 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
| 2623 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
| 2624 | ; |
---|
[b87a5ed] | 2625 | |
---|
[de62360d] | 2626 | // This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no |
---|
| 2627 | // identifier to which the type applies, e.g.: |
---|
[c11e31c] | 2628 | // |
---|
[b87a5ed] | 2629 | // [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2630 | // [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2631 | // |
---|
| 2632 | // These rules need LR(3): |
---|
| 2633 | // |
---|
[2871210] | 2634 | // new_abstract_tuple identifier_or_type_name |
---|
| 2635 | // '[' new_parameter_list ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[c11e31c] | 2636 | // |
---|
| 2637 | // since a function return type can be syntactically identical to a tuple type: |
---|
| 2638 | // |
---|
[b87a5ed] | 2639 | // [int, int] t; |
---|
| 2640 | // [int, int] f( int ); |
---|
[c11e31c] | 2641 | // |
---|
[2871210] | 2642 | // Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce |
---|
[de62360d] | 2643 | // new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary |
---|
| 2644 | // lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and tuple declarations are |
---|
| 2645 | // duplicated when appearing with new_function_specifier. |
---|
[b87a5ed] | 2646 | |
---|
| 2647 | new_abstract_declarator_tuple: // CFA |
---|
[4d51835] | 2648 | new_abstract_tuple |
---|
| 2649 | | type_qualifier_list new_abstract_tuple |
---|
| 2650 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2651 | | new_abstract_declarator_no_tuple |
---|
| 2652 | ; |
---|
[b87a5ed] | 2653 | |
---|
| 2654 | new_abstract_declarator_no_tuple: // CFA |
---|
[4d51835] | 2655 | new_abstract_ptr |
---|
| 2656 | | new_abstract_array |
---|
| 2657 | ; |
---|
[b87a5ed] | 2658 | |
---|
| 2659 | new_abstract_ptr: // CFA |
---|
[4d51835] | 2660 | '*' type_specifier |
---|
| 2661 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2662 | | type_qualifier_list '*' type_specifier |
---|
| 2663 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2664 | | '*' new_abstract_function |
---|
| 2665 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2666 | | type_qualifier_list '*' new_abstract_function |
---|
| 2667 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2668 | | '*' new_abstract_declarator_tuple |
---|
| 2669 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2670 | | type_qualifier_list '*' new_abstract_declarator_tuple |
---|
| 2671 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2672 | ; |
---|
[b87a5ed] | 2673 | |
---|
| 2674 | new_abstract_array: // CFA |
---|
[de62360d] | 2675 | // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with |
---|
| 2676 | // empty (void) function return type. |
---|
[2871210] | 2677 | '[' ']' type_specifier |
---|
| 2678 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2679 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2680 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2681 | | multi_array_dimension type_specifier |
---|
| 2682 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2683 | | '[' ']' new_abstract_ptr |
---|
| 2684 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2685 | | '[' ']' multi_array_dimension new_abstract_ptr |
---|
| 2686 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2687 | | multi_array_dimension new_abstract_ptr |
---|
| 2688 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2689 | ; |
---|
[b87a5ed] | 2690 | |
---|
| 2691 | new_abstract_tuple: // CFA |
---|
[4d51835] | 2692 | '[' push new_abstract_parameter_list pop ']' |
---|
| 2693 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 2694 | ; |
---|
[b87a5ed] | 2695 | |
---|
| 2696 | new_abstract_function: // CFA |
---|
[2871210] | 2697 | '[' ']' '(' new_parameter_type_list_opt ')' |
---|
| 2698 | { $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $4, 0 ); } |
---|
[4d51835] | 2699 | | new_abstract_tuple '(' push new_parameter_type_list_opt pop ')' |
---|
| 2700 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2701 | | new_function_return '(' push new_parameter_type_list_opt pop ')' |
---|
| 2702 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2703 | ; |
---|
[b87a5ed] | 2704 | |
---|
[de62360d] | 2705 | // 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in |
---|
| 2706 | // each declaration, and in the specifier-qualifier list in each structure declaration and type name." |
---|
[c11e31c] | 2707 | // |
---|
[de62360d] | 2708 | // 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of |
---|
| 2709 | // the declaration specifiers in a declaration is an obsolescent feature." |
---|
[c11e31c] | 2710 | // |
---|
| 2711 | // 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
---|
| 2712 | // prototype-format parameter type declarators) is an obsolescent feature." |
---|
| 2713 | // |
---|
[de62360d] | 2714 | // 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and |
---|
| 2715 | // declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature. |
---|
[51b7345] | 2716 | |
---|
[c11e31c] | 2717 | //************************* MISCELLANEOUS ******************************** |
---|
[51b7345] | 2718 | |
---|
[b87a5ed] | 2719 | comma_opt: // redundant comma |
---|
[4d51835] | 2720 | // empty |
---|
| 2721 | | ',' |
---|
| 2722 | ; |
---|
[51b7345] | 2723 | |
---|
| 2724 | assignment_opt: |
---|
[4d51835] | 2725 | // empty |
---|
| 2726 | { $$ = 0; } |
---|
| 2727 | | '=' assignment_expression |
---|
| 2728 | { $$ = $2; } |
---|
| 2729 | ; |
---|
[51b7345] | 2730 | |
---|
| 2731 | %% |
---|
[c11e31c] | 2732 | // ----end of grammar---- |
---|
[51b7345] | 2733 | |
---|
[5f2f2d7] | 2734 | void yyerror( const char * ) { |
---|
| 2735 | std::cout << "Error "; |
---|
[b87a5ed] | 2736 | if ( yyfilename ) { |
---|
[5f2f2d7] | 2737 | std::cout << "in file " << yyfilename << " "; |
---|
| 2738 | } // if |
---|
[b1d6dd5] | 2739 | std::cout << "at line " << yylineno << " reading token \"" << (yytext[0] == '\0' ? "EOF" : yytext) << "\"" << std::endl; |
---|
[51b7345] | 2740 | } |
---|
| 2741 | |
---|
[c11e31c] | 2742 | // Local Variables: // |
---|
[b87a5ed] | 2743 | // mode: c++ // |
---|
[de62360d] | 2744 | // tab-width: 4 // |
---|
[c11e31c] | 2745 | // compile-command: "make install" // |
---|
| 2746 | // End: // |
---|