[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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[bd85400] | 12 | // Last Modified On : Mon Feb 1 18:22:42 2016 |
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| 13 | // Update Count : 1483 |
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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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[5721a6d] | 80 | %token SIZEOF OFFSETOF |
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[b87a5ed] | 81 | %token ATTRIBUTE EXTENSION // GCC |
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[51b7345] | 82 | %token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN |
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[02e5ab6] | 83 | %token CHOOSE DISABLE ENABLE FALLTHRU TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT // CFA |
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[b87a5ed] | 84 | %token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1) |
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[c11e31c] | 85 | %token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL // C11 |
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[51b7345] | 86 | |
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[c11e31c] | 87 | // names and constants: lexer differentiates between identifier and typedef names |
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[b87a5ed] | 88 | %token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname |
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| 89 | %token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname |
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| 90 | %token<tok> INTEGERconstant FLOATINGconstant CHARACTERconstant STRINGliteral |
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| 91 | %token<tok> ZERO ONE // CFA |
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[51b7345] | 92 | |
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[c11e31c] | 93 | // multi-character operators |
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[b87a5ed] | 94 | %token ARROW // -> |
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| 95 | %token ICR DECR // ++ -- |
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| 96 | %token LS RS // << >> |
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| 97 | %token LE GE EQ NE // <= >= == != |
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| 98 | %token ANDAND OROR // && || |
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| 99 | %token ELLIPSIS // ... |
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| 100 | |
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| 101 | %token MULTassign DIVassign MODassign // *= /= %=/ |
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| 102 | %token PLUSassign MINUSassign // += -= |
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| 103 | %token LSassign RSassign // <<= >>= |
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| 104 | %token ANDassign ERassign ORassign // &= ^= |= |
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[51b7345] | 105 | |
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[097e2b0] | 106 | %token ATassign // @= |
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| 107 | |
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[c11e31c] | 108 | // Types declaration |
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[51b7345] | 109 | %union |
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| 110 | { |
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[b87a5ed] | 111 | Token tok; |
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| 112 | ParseNode *pn; |
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| 113 | ExpressionNode *en; |
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| 114 | DeclarationNode *decl; |
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[68cd1ce] | 115 | DeclarationNode::Aggregate aggKey; |
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[b87a5ed] | 116 | DeclarationNode::TypeClass tclass; |
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| 117 | StatementNode *sn; |
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| 118 | ConstantNode *constant; |
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[7f5566b] | 119 | LabelNode *label; |
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[b87a5ed] | 120 | InitializerNode *in; |
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[7f5566b] | 121 | bool flag; |
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[51b7345] | 122 | } |
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| 123 | |
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[097e2b0] | 124 | %type<tok> identifier no_01_identifier no_attr_identifier zero_one |
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[2871210] | 125 | %type<tok> identifier_or_type_name no_attr_identifier_or_type_name no_01_identifier_or_type_name |
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[51b7345] | 126 | %type<constant> string_literal_list |
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| 127 | |
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[c11e31c] | 128 | // expressions |
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[51b7345] | 129 | %type<constant> constant |
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[b87a5ed] | 130 | %type<en> tuple tuple_expression_list |
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| 131 | %type<en> unary_operator assignment_operator |
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| 132 | %type<en> primary_expression postfix_expression unary_expression |
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| 133 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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| 134 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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| 135 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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| 136 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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| 137 | %type<en> comma_expression comma_expression_opt |
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| 138 | %type<en> argument_expression_list argument_expression for_control_expression assignment_opt |
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[51b7345] | 139 | %type<en> subrange |
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[7f5566b] | 140 | %type<en> asm_operands_opt asm_operands_list asm_operand |
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| 141 | %type<label> label_list |
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| 142 | %type<constant> asm_clobbers_list_opt |
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| 143 | %type<flag> asm_volatile_opt |
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[51b7345] | 144 | |
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[c11e31c] | 145 | // statements |
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[b87a5ed] | 146 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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[097e2b0] | 147 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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[b87a5ed] | 148 | %type<sn> fall_through_opt fall_through |
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| 149 | %type<sn> statement statement_list |
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| 150 | %type<sn> block_item_list block_item |
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[51b7345] | 151 | %type<sn> case_clause |
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[b87a5ed] | 152 | %type<en> case_value case_value_list |
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| 153 | %type<sn> case_label case_label_list |
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| 154 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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| 155 | %type<pn> handler_list handler_clause finally_clause |
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[51b7345] | 156 | |
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[c11e31c] | 157 | // declarations |
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[51b7345] | 158 | %type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array |
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| 159 | %type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function |
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| 160 | %type<decl> abstract_parameter_ptr abstract_ptr |
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| 161 | |
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| 162 | %type<aggKey> aggregate_key |
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| 163 | %type<decl> aggregate_name |
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| 164 | |
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| 165 | %type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension |
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| 166 | |
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| 167 | %type<decl> assertion assertion_list_opt |
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| 168 | |
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| 169 | %type<en> bit_subrange_size_opt bit_subrange_size |
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| 170 | |
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| 171 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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| 172 | |
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| 173 | %type<decl> context_declaration context_declaration_list context_declaring_list context_specifier |
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| 174 | |
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| 175 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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| 176 | %type<decl> declaration_specifier declarator declaring_list |
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| 177 | |
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| 178 | %type<decl> elaborated_type_name |
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| 179 | |
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| 180 | %type<decl> enumerator_list enum_name |
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| 181 | %type<en> enumerator_value_opt |
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| 182 | |
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| 183 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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| 184 | |
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| 185 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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| 186 | %type<en> field field_list |
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| 187 | |
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[4d51835] | 188 | %type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr |
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[51b7345] | 189 | |
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| 190 | %type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function |
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| 191 | %type<decl> identifier_parameter_ptr identifier_list |
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| 192 | |
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| 193 | %type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple |
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| 194 | %type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list |
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| 195 | %type<decl> new_abstract_ptr new_abstract_tuple |
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| 196 | |
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| 197 | %type<decl> new_array_parameter_1st_dimension |
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| 198 | |
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| 199 | %type<decl> new_context_declaring_list new_declaration new_field_declaring_list |
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| 200 | %type<decl> new_function_declaration new_function_return new_function_specifier |
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| 201 | |
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| 202 | %type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple |
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| 203 | %type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr |
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| 204 | |
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| 205 | %type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt |
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| 206 | |
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| 207 | %type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier |
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| 208 | |
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| 209 | %type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array |
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| 210 | %type<decl> old_function_declarator old_function_no_ptr old_function_ptr |
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| 211 | |
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| 212 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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| 213 | %type<decl> parameter_type_list_opt |
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| 214 | |
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[2871210] | 215 | %type<decl> paren_identifier paren_type |
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[51b7345] | 216 | |
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| 217 | %type<decl> storage_class storage_class_name storage_class_list |
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| 218 | |
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| 219 | %type<decl> sue_declaration_specifier sue_type_specifier |
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| 220 | |
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| 221 | %type<tclass> type_class |
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| 222 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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| 223 | |
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[2871210] | 224 | %type<decl> typedef type_array typedef_declaration typedef_declaration_specifier typedef_expression |
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| 225 | %type<decl> type_function type_parameter_array type_parameter_function type_parameter_ptr |
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| 226 | %type<decl> type_parameter_redeclarator type_ptr type_redeclarator typedef_type_specifier |
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| 227 | %type<decl> typegen_declaration_specifier typegen_type_specifier typegen_name |
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[51b7345] | 228 | |
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| 229 | %type<decl> type_name type_name_no_function |
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| 230 | %type<decl> type_parameter type_parameter_list |
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| 231 | |
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| 232 | %type<en> type_name_list |
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| 233 | |
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| 234 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier |
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| 235 | |
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| 236 | %type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function |
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| 237 | %type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr |
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| 238 | |
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[1db21619] | 239 | %type<decl> attribute_list_opt attribute_list attribute |
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| 240 | |
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[c11e31c] | 241 | // initializers |
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[51b7345] | 242 | %type<in> initializer initializer_list initializer_opt |
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| 243 | |
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[c11e31c] | 244 | // designators |
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[51b7345] | 245 | %type<en> designator designator_list designation |
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| 246 | |
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| 247 | |
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[b87a5ed] | 248 | // Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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| 249 | // is ambiguous: |
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| 250 | // .---------. matches IF '(' comma_expression ')' statement |
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[c11e31c] | 251 | // if ( C ) S1 else S2 |
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[b87a5ed] | 252 | // `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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[51b7345] | 253 | |
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[c11e31c] | 254 | %nonassoc THEN // rule precedence for IF '(' comma_expression ')' statement |
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| 255 | %nonassoc ELSE // token precedence for start of else clause in IF statement |
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[51b7345] | 256 | |
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[b87a5ed] | 257 | %start translation_unit // parse-tree root |
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[51b7345] | 258 | |
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| 259 | %% |
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[c11e31c] | 260 | //************************* Namespace Management ******************************** |
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| 261 | |
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[de62360d] | 262 | // The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols |
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| 263 | // "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free |
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| 264 | // grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this |
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| 265 | // grammar uses the ANSI style. |
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[c11e31c] | 266 | // |
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[de62360d] | 267 | // Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those |
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| 268 | // introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. This latter |
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| 269 | // type name creates a third class of identifiers that must be distinguished by the scanner. |
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[c11e31c] | 270 | // |
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[de62360d] | 271 | // Since the scanner cannot distinguish among the different classes of identifiers without some context information, it |
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| 272 | // accesses a data structure (the TypedefTable) to allow classification of an identifier that it has just read. |
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| 273 | // Semantic actions during the parser update this data structure when the class of identifiers change. |
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[c11e31c] | 274 | // |
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[de62360d] | 275 | // Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a |
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| 276 | // local scope; it must revert to its original class at the end of the block. Since type names can be local to a |
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| 277 | // particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are |
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| 278 | // local to the current declaration scope and those that persist past the end of the declaration (i.e., names defined in |
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| 279 | // "typedef" or "type" declarations). |
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[c11e31c] | 280 | // |
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[de62360d] | 281 | // The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and closing of |
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| 282 | // scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur |
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| 283 | // within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point |
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| 284 | // of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have |
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| 285 | // enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra |
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| 286 | // rules is to open a new scope unconditionally. As the grammar evolves, it may be neccesary to add or move around |
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| 287 | // "push" and "pop" nonterminals to resolve conflicts of this sort. |
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[51b7345] | 288 | |
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| 289 | push: |
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[4d51835] | 290 | { |
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| 291 | typedefTable.enterScope(); |
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| 292 | } |
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| 293 | ; |
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[51b7345] | 294 | |
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| 295 | pop: |
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[4d51835] | 296 | { |
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| 297 | typedefTable.leaveScope(); |
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| 298 | } |
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| 299 | ; |
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[51b7345] | 300 | |
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[c11e31c] | 301 | //************************* CONSTANTS ******************************** |
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[51b7345] | 302 | |
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| 303 | constant: |
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[de62360d] | 304 | // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant". |
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[59db689] | 305 | INTEGERconstant { $$ = new ConstantNode( ConstantNode::Integer, $1 ); } |
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| 306 | | FLOATINGconstant { $$ = new ConstantNode( ConstantNode::Float, $1 ); } |
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| 307 | | CHARACTERconstant { $$ = new ConstantNode( ConstantNode::Character, $1 ); } |
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[4d51835] | 308 | ; |
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[51b7345] | 309 | |
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| 310 | identifier: |
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[4d51835] | 311 | IDENTIFIER |
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| 312 | | ATTR_IDENTIFIER // CFA |
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| 313 | | zero_one // CFA |
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| 314 | ; |
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[51b7345] | 315 | |
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| 316 | no_01_identifier: |
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[4d51835] | 317 | IDENTIFIER |
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| 318 | | ATTR_IDENTIFIER // CFA |
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| 319 | ; |
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[51b7345] | 320 | |
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| 321 | no_attr_identifier: |
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[4d51835] | 322 | IDENTIFIER |
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[bd85400] | 323 | | zero_one // CFA |
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[4d51835] | 324 | ; |
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[51b7345] | 325 | |
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[b87a5ed] | 326 | zero_one: // CFA |
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[4d51835] | 327 | ZERO |
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| 328 | | ONE |
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| 329 | ; |
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[51b7345] | 330 | |
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[b87a5ed] | 331 | string_literal_list: // juxtaposed strings are concatenated |
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[59db689] | 332 | STRINGliteral { $$ = new ConstantNode( ConstantNode::String, $1 ); } |
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| 333 | | string_literal_list STRINGliteral { $$ = $1->appendstr( $2 ); } |
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[4d51835] | 334 | ; |
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[51b7345] | 335 | |
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[c11e31c] | 336 | //************************* EXPRESSIONS ******************************** |
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[51b7345] | 337 | |
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| 338 | primary_expression: |
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[4d51835] | 339 | IDENTIFIER // typedef name cannot be used as a variable name |
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[de62360d] | 340 | { $$ = new VarRefNode( $1 ); } |
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[4d51835] | 341 | | zero_one |
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[de62360d] | 342 | { $$ = new VarRefNode( $1 ); } |
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[4d51835] | 343 | | '(' comma_expression ')' |
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| 344 | { $$ = $2; } |
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| 345 | | '(' compound_statement ')' // GCC, lambda expression |
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[de62360d] | 346 | { $$ = new ValofExprNode( $2 ); } |
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[4d51835] | 347 | ; |
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[51b7345] | 348 | |
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| 349 | postfix_expression: |
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[4d51835] | 350 | primary_expression |
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| 351 | | postfix_expression '[' push assignment_expression pop ']' |
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[de62360d] | 352 | // CFA, comma_expression disallowed in the context because it results in a commom user error: subscripting a |
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| 353 | // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be |
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| 354 | // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is |
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| 355 | // equivalent to the old x[i,j]. |
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| 356 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Index ), $1, $4 ); } |
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[4d51835] | 357 | | postfix_expression '(' argument_expression_list ')' |
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[de62360d] | 358 | { $$ = new CompositeExprNode( $1, $3 ); } |
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[bd85400] | 359 | // ambiguity with .0 so space required after field-selection, e.g. |
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| 360 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
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[4d51835] | 361 | | postfix_expression '.' no_attr_identifier |
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[de62360d] | 362 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), $1, new VarRefNode( $3 )); } |
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[4d51835] | 363 | | postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector |
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| 364 | | postfix_expression ARROW no_attr_identifier |
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[de62360d] | 365 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), $1, new VarRefNode( $3 )); } |
---|
[4d51835] | 366 | | postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector |
---|
| 367 | | postfix_expression ICR |
---|
[de62360d] | 368 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::IncrPost ), $1 ); } |
---|
[4d51835] | 369 | | postfix_expression DECR |
---|
[de62360d] | 370 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::DecrPost ), $1 ); } |
---|
[4d51835] | 371 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99 |
---|
| 372 | { $$ = 0; } |
---|
[097e2b0] | 373 | | postfix_expression '{' argument_expression_list '}' // CFA |
---|
| 374 | { |
---|
| 375 | Token fn; fn.str = new std::string( "?{}" ); // location undefined |
---|
| 376 | $$ = new CompositeExprNode( new VarRefNode( fn ), (ExpressionNode *)( $1 )->set_link( $3 ) ); |
---|
| 377 | } |
---|
[4d51835] | 378 | ; |
---|
[51b7345] | 379 | |
---|
| 380 | argument_expression_list: |
---|
[4d51835] | 381 | argument_expression |
---|
| 382 | | argument_expression_list ',' argument_expression |
---|
[de62360d] | 383 | { $$ = (ExpressionNode *)( $1->set_link( $3 )); } |
---|
[4d51835] | 384 | ; |
---|
[51b7345] | 385 | |
---|
| 386 | argument_expression: |
---|
[4d51835] | 387 | // empty |
---|
| 388 | { $$ = 0; } // use default argument |
---|
| 389 | | assignment_expression |
---|
| 390 | | no_attr_identifier ':' assignment_expression |
---|
[7f5566b] | 391 | { $$ = $3->set_argName( $1 ); } |
---|
[2871210] | 392 | // Only a list of no_attr_identifier_or_type_name is allowed in this context. However, there is insufficient |
---|
[de62360d] | 393 | // look ahead to distinguish between this list of parameter names and a tuple, so the tuple form must be used |
---|
| 394 | // with an appropriate semantic check. |
---|
[4d51835] | 395 | | '[' push assignment_expression pop ']' ':' assignment_expression |
---|
[7f5566b] | 396 | { $$ = $7->set_argName( $3 ); } |
---|
[4d51835] | 397 | | '[' push assignment_expression ',' tuple_expression_list pop ']' ':' assignment_expression |
---|
[7f5566b] | 398 | { $$ = $9->set_argName( new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); } |
---|
[4d51835] | 399 | ; |
---|
[b87a5ed] | 400 | |
---|
| 401 | field_list: // CFA, tuple field selector |
---|
[4d51835] | 402 | field |
---|
| 403 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
| 404 | ; |
---|
[b87a5ed] | 405 | |
---|
| 406 | field: // CFA, tuple field selector |
---|
[4d51835] | 407 | no_attr_identifier |
---|
| 408 | { $$ = new VarRefNode( $1 ); } |
---|
[bd85400] | 409 | // ambiguity with .0 so space required after field-selection, e.g. |
---|
| 410 | // struct S { int 0, 1; } s; s. 0 = 0; s. 1 = 1; |
---|
[4d51835] | 411 | | no_attr_identifier '.' field |
---|
[de62360d] | 412 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 413 | | no_attr_identifier '.' '[' push field_list pop ']' |
---|
[de62360d] | 414 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $5 ); } |
---|
[4d51835] | 415 | | no_attr_identifier ARROW field |
---|
[de62360d] | 416 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 417 | | no_attr_identifier ARROW '[' push field_list pop ']' |
---|
[de62360d] | 418 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $5 ); } |
---|
[4d51835] | 419 | ; |
---|
[51b7345] | 420 | |
---|
| 421 | unary_expression: |
---|
[4d51835] | 422 | postfix_expression |
---|
[51b1202] | 423 | // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" |
---|
| 424 | // still requires semantics checks, e.g., ++3, 3--, *3, &&3 |
---|
| 425 | | constant |
---|
| 426 | { $$ = $1; } |
---|
| 427 | | string_literal_list |
---|
| 428 | { $$ = $1; } |
---|
[4d51835] | 429 | | ICR unary_expression |
---|
[de62360d] | 430 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Incr ), $2 ); } |
---|
[4d51835] | 431 | | DECR unary_expression |
---|
[de62360d] | 432 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Decr ), $2 ); } |
---|
[4d51835] | 433 | | EXTENSION cast_expression // GCC |
---|
| 434 | { $$ = $2; } |
---|
| 435 | | unary_operator cast_expression |
---|
[de62360d] | 436 | { $$ = new CompositeExprNode( $1, $2 ); } |
---|
[4d51835] | 437 | | '!' cast_expression |
---|
[de62360d] | 438 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Neg ), $2 ); } |
---|
[4d51835] | 439 | | '*' cast_expression // CFA |
---|
[de62360d] | 440 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PointTo ), $2 ); } |
---|
[4d51835] | 441 | // '*' is is separated from unary_operator because of shift/reduce conflict in: |
---|
| 442 | // { * X; } // dereference X |
---|
| 443 | // { * int X; } // CFA declaration of pointer to int |
---|
| 444 | // '&' must be moved here if C++ reference variables are supported. |
---|
| 445 | | SIZEOF unary_expression |
---|
[de62360d] | 446 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), $2 ); } |
---|
[4d51835] | 447 | | SIZEOF '(' type_name_no_function ')' |
---|
[de62360d] | 448 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), new TypeValueNode( $3 )); } |
---|
[5721a6d] | 449 | | OFFSETOF '(' type_name_no_function ',' no_attr_identifier ')' |
---|
| 450 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::OffsetOf ), new TypeValueNode( $3 ), new VarRefNode( $5 )); } |
---|
[4d51835] | 451 | | ATTR_IDENTIFIER |
---|
[de62360d] | 452 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 )); } |
---|
[4d51835] | 453 | | ATTR_IDENTIFIER '(' type_name ')' |
---|
[de62360d] | 454 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), new TypeValueNode( $3 )); } |
---|
[4d51835] | 455 | | ATTR_IDENTIFIER '(' argument_expression ')' |
---|
[de62360d] | 456 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), $3 ); } |
---|
[4d51835] | 457 | | ALIGNOF unary_expression // GCC, variable alignment |
---|
[de62360d] | 458 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), $2 ); } |
---|
[4d51835] | 459 | | ALIGNOF '(' type_name_no_function ')' // GCC, type alignment |
---|
[02e5ab6] | 460 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), new TypeValueNode( $3 ) ); } |
---|
[4d51835] | 461 | | ANDAND no_attr_identifier // GCC, address of label |
---|
[02e5ab6] | 462 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LabelAddress ), new VarRefNode( $2, true ) ); } |
---|
[4d51835] | 463 | ; |
---|
[51b7345] | 464 | |
---|
| 465 | unary_operator: |
---|
[de62360d] | 466 | '&' { $$ = new OperatorNode( OperatorNode::AddressOf ); } |
---|
| 467 | | '+' { $$ = new OperatorNode( OperatorNode::UnPlus ); } |
---|
| 468 | | '-' { $$ = new OperatorNode( OperatorNode::UnMinus ); } |
---|
| 469 | | '~' { $$ = new OperatorNode( OperatorNode::BitNeg ); } |
---|
[4d51835] | 470 | ; |
---|
[51b7345] | 471 | |
---|
| 472 | cast_expression: |
---|
[4d51835] | 473 | unary_expression |
---|
| 474 | | '(' type_name_no_function ')' cast_expression |
---|
[de62360d] | 475 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); } |
---|
[4d51835] | 476 | | '(' type_name_no_function ')' tuple |
---|
[de62360d] | 477 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); } |
---|
[4d51835] | 478 | ; |
---|
[51b7345] | 479 | |
---|
| 480 | multiplicative_expression: |
---|
[4d51835] | 481 | cast_expression |
---|
| 482 | | multiplicative_expression '*' cast_expression |
---|
[de62360d] | 483 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mul ), $1, $3 ); } |
---|
[4d51835] | 484 | | multiplicative_expression '/' cast_expression |
---|
[de62360d] | 485 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Div ), $1, $3 ); } |
---|
[4d51835] | 486 | | multiplicative_expression '%' cast_expression |
---|
[de62360d] | 487 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mod ), $1, $3 ); } |
---|
[4d51835] | 488 | ; |
---|
[51b7345] | 489 | |
---|
| 490 | additive_expression: |
---|
[4d51835] | 491 | multiplicative_expression |
---|
| 492 | | additive_expression '+' multiplicative_expression |
---|
[de62360d] | 493 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Plus ), $1, $3 ); } |
---|
[4d51835] | 494 | | additive_expression '-' multiplicative_expression |
---|
[de62360d] | 495 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Minus ), $1, $3 ); } |
---|
[4d51835] | 496 | ; |
---|
[51b7345] | 497 | |
---|
| 498 | shift_expression: |
---|
[4d51835] | 499 | additive_expression |
---|
| 500 | | shift_expression LS additive_expression |
---|
[de62360d] | 501 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LShift ), $1, $3 ); } |
---|
[4d51835] | 502 | | shift_expression RS additive_expression |
---|
[de62360d] | 503 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::RShift ), $1, $3 ); } |
---|
[4d51835] | 504 | ; |
---|
[51b7345] | 505 | |
---|
| 506 | relational_expression: |
---|
[4d51835] | 507 | shift_expression |
---|
| 508 | | relational_expression '<' shift_expression |
---|
[de62360d] | 509 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LThan ), $1, $3 ); } |
---|
[4d51835] | 510 | | relational_expression '>' shift_expression |
---|
[de62360d] | 511 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GThan ), $1, $3 ); } |
---|
[4d51835] | 512 | | relational_expression LE shift_expression |
---|
[de62360d] | 513 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LEThan ), $1, $3 ); } |
---|
[4d51835] | 514 | | relational_expression GE shift_expression |
---|
[de62360d] | 515 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GEThan ), $1, $3 ); } |
---|
[4d51835] | 516 | ; |
---|
[51b7345] | 517 | |
---|
| 518 | equality_expression: |
---|
[4d51835] | 519 | relational_expression |
---|
| 520 | | equality_expression EQ relational_expression |
---|
[de62360d] | 521 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Eq ), $1, $3 ); } |
---|
[4d51835] | 522 | | equality_expression NE relational_expression |
---|
[de62360d] | 523 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Neq ), $1, $3 ); } |
---|
[4d51835] | 524 | ; |
---|
[51b7345] | 525 | |
---|
| 526 | AND_expression: |
---|
[4d51835] | 527 | equality_expression |
---|
| 528 | | AND_expression '&' equality_expression |
---|
[de62360d] | 529 | { $$ =new CompositeExprNode( new OperatorNode( OperatorNode::BitAnd ), $1, $3 ); } |
---|
[4d51835] | 530 | ; |
---|
[51b7345] | 531 | |
---|
| 532 | exclusive_OR_expression: |
---|
[4d51835] | 533 | AND_expression |
---|
| 534 | | exclusive_OR_expression '^' AND_expression |
---|
[de62360d] | 535 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Xor ), $1, $3 ); } |
---|
[4d51835] | 536 | ; |
---|
[51b7345] | 537 | |
---|
| 538 | inclusive_OR_expression: |
---|
[4d51835] | 539 | exclusive_OR_expression |
---|
| 540 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
[de62360d] | 541 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::BitOr ), $1, $3 ); } |
---|
[4d51835] | 542 | ; |
---|
[51b7345] | 543 | |
---|
| 544 | logical_AND_expression: |
---|
[4d51835] | 545 | inclusive_OR_expression |
---|
| 546 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
[de62360d] | 547 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::And ), $1, $3 ); } |
---|
[4d51835] | 548 | ; |
---|
[51b7345] | 549 | |
---|
| 550 | logical_OR_expression: |
---|
[4d51835] | 551 | logical_AND_expression |
---|
| 552 | | logical_OR_expression OROR logical_AND_expression |
---|
[de62360d] | 553 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Or ), $1, $3 ); } |
---|
[4d51835] | 554 | ; |
---|
[51b7345] | 555 | |
---|
| 556 | conditional_expression: |
---|
[4d51835] | 557 | logical_OR_expression |
---|
| 558 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
[de62360d] | 559 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode *)mkList( (*$1, *$3, *$5 ) ) ); } |
---|
[4d51835] | 560 | | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand |
---|
[de62360d] | 561 | { $$=new CompositeExprNode( new OperatorNode( OperatorNode::NCond ), $1, $4 ); } |
---|
[4d51835] | 562 | | logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression |
---|
[de62360d] | 563 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode *)mkList( (*$1, *$3, *$5 ) ) ); } |
---|
[4d51835] | 564 | ; |
---|
[51b7345] | 565 | |
---|
| 566 | constant_expression: |
---|
[4d51835] | 567 | conditional_expression |
---|
| 568 | ; |
---|
[51b7345] | 569 | |
---|
| 570 | assignment_expression: |
---|
[4d51835] | 571 | // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples |
---|
| 572 | conditional_expression |
---|
| 573 | | unary_expression '=' assignment_expression |
---|
[de62360d] | 574 | { $$ =new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $3 ); } |
---|
[4d51835] | 575 | | unary_expression assignment_operator assignment_expression |
---|
[de62360d] | 576 | { $$ =new CompositeExprNode( $2, $1, $3 ); } |
---|
[4d51835] | 577 | | tuple assignment_opt // CFA, tuple expression |
---|
[de62360d] | 578 | { $$ = ( $2 == 0 ) ? $1 : new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $2 ); } |
---|
[4d51835] | 579 | ; |
---|
[51b7345] | 580 | |
---|
| 581 | assignment_expression_opt: |
---|
[4d51835] | 582 | // empty |
---|
| 583 | { $$ = new NullExprNode; } |
---|
| 584 | | assignment_expression |
---|
| 585 | ; |
---|
[b87a5ed] | 586 | |
---|
| 587 | tuple: // CFA, tuple |
---|
[de62360d] | 588 | // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with |
---|
| 589 | // comma_expression in new_identifier_parameter_array and new_abstract_array |
---|
[2871210] | 590 | '[' ']' |
---|
[4d51835] | 591 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ) ); } |
---|
| 592 | | '[' push assignment_expression pop ']' |
---|
| 593 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), $3 ); } |
---|
| 594 | | '[' push ',' tuple_expression_list pop ']' |
---|
| 595 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(new NullExprNode)->set_link( $4 ) ); } |
---|
| 596 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
---|
| 597 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 ) ) ); } |
---|
| 598 | ; |
---|
[51b7345] | 599 | |
---|
| 600 | tuple_expression_list: |
---|
[4d51835] | 601 | assignment_expression_opt |
---|
| 602 | | tuple_expression_list ',' assignment_expression_opt |
---|
| 603 | { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
| 604 | ; |
---|
[51b7345] | 605 | |
---|
| 606 | assignment_operator: |
---|
[de62360d] | 607 | MULTassign { $$ = new OperatorNode( OperatorNode::MulAssn ); } |
---|
| 608 | | DIVassign { $$ = new OperatorNode( OperatorNode::DivAssn ); } |
---|
| 609 | | MODassign { $$ = new OperatorNode( OperatorNode::ModAssn ); } |
---|
| 610 | | PLUSassign { $$ = new OperatorNode( OperatorNode::PlusAssn ); } |
---|
| 611 | | MINUSassign { $$ = new OperatorNode( OperatorNode::MinusAssn ); } |
---|
| 612 | | LSassign { $$ = new OperatorNode( OperatorNode::LSAssn ); } |
---|
| 613 | | RSassign { $$ = new OperatorNode( OperatorNode::RSAssn ); } |
---|
| 614 | | ANDassign { $$ = new OperatorNode( OperatorNode::AndAssn ); } |
---|
| 615 | | ERassign { $$ = new OperatorNode( OperatorNode::ERAssn ); } |
---|
| 616 | | ORassign { $$ = new OperatorNode( OperatorNode::OrAssn ); } |
---|
[4d51835] | 617 | ; |
---|
[51b7345] | 618 | |
---|
| 619 | comma_expression: |
---|
[4d51835] | 620 | assignment_expression |
---|
[de62360d] | 621 | | comma_expression ',' assignment_expression // { $$ = (ExpressionNode *)$1->add_to_list( $3 ); } |
---|
| 622 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Comma ), $1, $3 ); } |
---|
[4d51835] | 623 | ; |
---|
[51b7345] | 624 | |
---|
| 625 | comma_expression_opt: |
---|
[4d51835] | 626 | // empty |
---|
| 627 | { $$ = 0; } |
---|
| 628 | | comma_expression |
---|
| 629 | ; |
---|
[51b7345] | 630 | |
---|
[c11e31c] | 631 | //*************************** STATEMENTS ******************************* |
---|
[51b7345] | 632 | |
---|
| 633 | statement: |
---|
[4d51835] | 634 | labeled_statement |
---|
| 635 | | compound_statement |
---|
| 636 | | expression_statement { $$ = $1; } |
---|
| 637 | | selection_statement |
---|
| 638 | | iteration_statement |
---|
| 639 | | jump_statement |
---|
| 640 | | exception_statement |
---|
| 641 | | asm_statement |
---|
[097e2b0] | 642 | | '^' postfix_expression '{' argument_expression_list '}' ';' // CFA |
---|
| 643 | { |
---|
| 644 | Token fn; fn.str = new std::string( "^?{}" ); // location undefined |
---|
| 645 | $$ = new StatementNode( StatementNode::Exp, new CompositeExprNode( new VarRefNode( fn ), |
---|
| 646 | (ExpressionNode *)(new CompositeExprNode( new OperatorNode( OperatorNode::AddressOf ), $2 ))->set_link( $4 ) ), 0 ); |
---|
| 647 | } |
---|
[4d51835] | 648 | ; |
---|
[51b7345] | 649 | |
---|
| 650 | labeled_statement: |
---|
[4d51835] | 651 | no_attr_identifier ':' attribute_list_opt statement |
---|
[1db21619] | 652 | { |
---|
| 653 | $$ = $4->add_label( $1 ); |
---|
| 654 | } |
---|
[4d51835] | 655 | ; |
---|
[51b7345] | 656 | |
---|
| 657 | compound_statement: |
---|
[4d51835] | 658 | '{' '}' |
---|
| 659 | { $$ = new CompoundStmtNode( (StatementNode *)0 ); } |
---|
| 660 | | '{' |
---|
[de62360d] | 661 | // Two scopes are necessary because the block itself has a scope, but every declaration within the block also |
---|
| 662 | // requires its own scope |
---|
[4d51835] | 663 | push push |
---|
[51b1202] | 664 | local_label_declaration_opt // GCC, local labels |
---|
[4d51835] | 665 | block_item_list pop '}' // C99, intermix declarations and statements |
---|
| 666 | { $$ = new CompoundStmtNode( $5 ); } |
---|
| 667 | ; |
---|
[b87a5ed] | 668 | |
---|
| 669 | block_item_list: // C99 |
---|
[4d51835] | 670 | block_item |
---|
| 671 | | block_item_list push block_item |
---|
[de62360d] | 672 | { if ( $1 != 0 ) { $1->set_link( $3 ); $$ = $1; } } |
---|
[4d51835] | 673 | ; |
---|
[51b7345] | 674 | |
---|
| 675 | block_item: |
---|
[4d51835] | 676 | declaration // CFA, new & old style declarations |
---|
| 677 | { $$ = new StatementNode( $1 ); } |
---|
| 678 | | EXTENSION declaration // GCC |
---|
| 679 | { $$ = new StatementNode( $2 ); } |
---|
| 680 | | function_definition |
---|
| 681 | { $$ = new StatementNode( $1 ); } |
---|
| 682 | | statement pop |
---|
| 683 | ; |
---|
[51b7345] | 684 | |
---|
| 685 | statement_list: |
---|
[4d51835] | 686 | statement |
---|
| 687 | | statement_list statement |
---|
[de62360d] | 688 | { if ( $1 != 0 ) { $1->set_link( $2 ); $$ = $1; } } |
---|
[4d51835] | 689 | ; |
---|
[51b7345] | 690 | |
---|
| 691 | expression_statement: |
---|
[4d51835] | 692 | comma_expression_opt ';' |
---|
[de62360d] | 693 | { $$ = new StatementNode( StatementNode::Exp, $1, 0 ); } |
---|
[4d51835] | 694 | ; |
---|
[51b7345] | 695 | |
---|
| 696 | selection_statement: |
---|
[4d51835] | 697 | IF '(' comma_expression ')' statement %prec THEN |
---|
| 698 | // explicitly deal with the shift/reduce conflict on if/else |
---|
[de62360d] | 699 | { $$ = new StatementNode( StatementNode::If, $3, $5 ); } |
---|
[4d51835] | 700 | | IF '(' comma_expression ')' statement ELSE statement |
---|
[de62360d] | 701 | { $$ = new StatementNode( StatementNode::If, $3, (StatementNode *)mkList((*$5, *$7 )) ); } |
---|
[4d51835] | 702 | | SWITCH '(' comma_expression ')' case_clause // CFA |
---|
[de62360d] | 703 | { $$ = new StatementNode( StatementNode::Switch, $3, $5 ); } |
---|
[4d51835] | 704 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA |
---|
[de62360d] | 705 | { $$ = new StatementNode( StatementNode::Switch, $3, $8 ); /* xxx */ } |
---|
| 706 | // The semantics of the declaration list is changed to include any associated initialization, which is performed |
---|
| 707 | // *before* the transfer to the appropriate case clause. Statements after the initial declaration list can |
---|
| 708 | // never be executed, and therefore, are removed from the grammar even though C allows it. |
---|
[4d51835] | 709 | | CHOOSE '(' comma_expression ')' case_clause // CFA |
---|
[de62360d] | 710 | { $$ = new StatementNode( StatementNode::Choose, $3, $5 ); } |
---|
[4d51835] | 711 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA |
---|
[de62360d] | 712 | { $$ = new StatementNode( StatementNode::Choose, $3, $8 ); } |
---|
[4d51835] | 713 | ; |
---|
[b87a5ed] | 714 | |
---|
[de62360d] | 715 | // CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case |
---|
| 716 | // clause allows a list of values and subranges. |
---|
[b87a5ed] | 717 | |
---|
| 718 | case_value: // CFA |
---|
[4d51835] | 719 | constant_expression { $$ = $1; } |
---|
| 720 | | constant_expression ELLIPSIS constant_expression // GCC, subrange |
---|
[de62360d] | 721 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); } |
---|
[4d51835] | 722 | | subrange // CFA, subrange |
---|
| 723 | ; |
---|
[b87a5ed] | 724 | |
---|
| 725 | case_value_list: // CFA |
---|
[4d51835] | 726 | case_value |
---|
| 727 | | case_value_list ',' case_value |
---|
[de62360d] | 728 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(tupleContents( $1 ))->set_link( $3 ) ); } |
---|
[4d51835] | 729 | ; |
---|
[b87a5ed] | 730 | |
---|
| 731 | case_label: // CFA |
---|
[de62360d] | 732 | CASE case_value_list ':' { $$ = new StatementNode( StatementNode::Case, $2, 0 ); } |
---|
| 733 | | DEFAULT ':' { $$ = new StatementNode( StatementNode::Default ); } |
---|
[4d51835] | 734 | // A semantic check is required to ensure only one default clause per switch/choose statement. |
---|
| 735 | ; |
---|
[b87a5ed] | 736 | |
---|
| 737 | case_label_list: // CFA |
---|
[4d51835] | 738 | case_label |
---|
[de62360d] | 739 | | case_label_list case_label { $$ = (StatementNode *)( $1->set_link( $2 )); } |
---|
[4d51835] | 740 | ; |
---|
[b87a5ed] | 741 | |
---|
| 742 | case_clause: // CFA |
---|
[de62360d] | 743 | case_label_list statement { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 744 | ; |
---|
[b87a5ed] | 745 | |
---|
| 746 | switch_clause_list_opt: // CFA |
---|
[4d51835] | 747 | // empty |
---|
| 748 | { $$ = 0; } |
---|
| 749 | | switch_clause_list |
---|
| 750 | ; |
---|
[b87a5ed] | 751 | |
---|
| 752 | switch_clause_list: // CFA |
---|
[4d51835] | 753 | case_label_list statement_list |
---|
[de62360d] | 754 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 755 | | switch_clause_list case_label_list statement_list |
---|
[de62360d] | 756 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 757 | ; |
---|
[b87a5ed] | 758 | |
---|
| 759 | choose_clause_list_opt: // CFA |
---|
[4d51835] | 760 | // empty |
---|
| 761 | { $$ = 0; } |
---|
| 762 | | choose_clause_list |
---|
| 763 | ; |
---|
[b87a5ed] | 764 | |
---|
| 765 | choose_clause_list: // CFA |
---|
[4d51835] | 766 | case_label_list fall_through |
---|
[de62360d] | 767 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 768 | | case_label_list statement_list fall_through_opt |
---|
[de62360d] | 769 | { $$ = $1->append_last_case((StatementNode *)mkList((*$2,*$3 ))); } |
---|
[4d51835] | 770 | | choose_clause_list case_label_list fall_through |
---|
[de62360d] | 771 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 772 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
[de62360d] | 773 | { $$ = (StatementNode *)( $1->set_link( $2->append_last_case((StatementNode *)mkList((*$3,*$4 ))))); } |
---|
[4d51835] | 774 | ; |
---|
[b87a5ed] | 775 | |
---|
| 776 | fall_through_opt: // CFA |
---|
[4d51835] | 777 | // empty |
---|
| 778 | { $$ = 0; } |
---|
| 779 | | fall_through |
---|
| 780 | ; |
---|
[b87a5ed] | 781 | |
---|
| 782 | fall_through: // CFA |
---|
[7f5566b] | 783 | FALLTHRU { $$ = new StatementNode( StatementNode::Fallthru ); } |
---|
| 784 | | FALLTHRU ';' { $$ = new StatementNode( StatementNode::Fallthru ); } |
---|
[4d51835] | 785 | ; |
---|
[51b7345] | 786 | |
---|
| 787 | iteration_statement: |
---|
[4d51835] | 788 | WHILE '(' comma_expression ')' statement |
---|
[de62360d] | 789 | { $$ = new StatementNode( StatementNode::While, $3, $5 ); } |
---|
[4d51835] | 790 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
[de62360d] | 791 | { $$ = new StatementNode( StatementNode::Do, $5, $2 ); } |
---|
[4d51835] | 792 | | FOR '(' push for_control_expression ')' statement |
---|
[de62360d] | 793 | { $$ = new StatementNode( StatementNode::For, $4, $6 ); } |
---|
[4d51835] | 794 | ; |
---|
[51b7345] | 795 | |
---|
| 796 | for_control_expression: |
---|
[4d51835] | 797 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
[de62360d] | 798 | { $$ = new ForCtlExprNode( $1, $4, $6 ); } |
---|
[4d51835] | 799 | | declaration comma_expression_opt ';' comma_expression_opt // C99 |
---|
[de62360d] | 800 | { $$ = new ForCtlExprNode( $1, $2, $4 ); } |
---|
[4d51835] | 801 | ; |
---|
[51b7345] | 802 | |
---|
| 803 | jump_statement: |
---|
[4d51835] | 804 | GOTO no_attr_identifier ';' |
---|
[de62360d] | 805 | { $$ = new StatementNode( StatementNode::Goto, $2 ); } |
---|
[4d51835] | 806 | | GOTO '*' comma_expression ';' // GCC, computed goto |
---|
[de62360d] | 807 | // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3 ); |
---|
| 808 | // whereas normal operator precedence yields goto (*i)+3; |
---|
| 809 | { $$ = new StatementNode( StatementNode::Goto, $3 ); } |
---|
[4d51835] | 810 | | CONTINUE ';' |
---|
[de62360d] | 811 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[7f5566b] | 812 | { $$ = new StatementNode( StatementNode::Continue ); } |
---|
[4d51835] | 813 | | CONTINUE no_attr_identifier ';' // CFA, multi-level continue |
---|
[de62360d] | 814 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 815 | // the target of the transfer appears only at the start of an iteration statement. |
---|
| 816 | { $$ = new StatementNode( StatementNode::Continue, $2 ); } |
---|
[4d51835] | 817 | | BREAK ';' |
---|
[de62360d] | 818 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[7f5566b] | 819 | { $$ = new StatementNode( StatementNode::Break ); } |
---|
[4d51835] | 820 | | BREAK no_attr_identifier ';' // CFA, multi-level exit |
---|
[de62360d] | 821 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 822 | // the target of the transfer appears only at the start of an iteration statement. |
---|
| 823 | { $$ = new StatementNode( StatementNode::Break, $2 ); } |
---|
[4d51835] | 824 | | RETURN comma_expression_opt ';' |
---|
[de62360d] | 825 | { $$ = new StatementNode( StatementNode::Return, $2, 0 ); } |
---|
[02e5ab6] | 826 | | THROW assignment_expression_opt ';' |
---|
[de62360d] | 827 | { $$ = new StatementNode( StatementNode::Throw, $2, 0 ); } |
---|
[02e5ab6] | 828 | // | THROW ';' |
---|
| 829 | // { $$ = new StatementNode( StatementNode::Throw ); } |
---|
| 830 | | THROWRESUME assignment_expression_opt ';' |
---|
| 831 | { $$ = new StatementNode( StatementNode::Throw, $2, 0 ); } |
---|
| 832 | | THROWRESUME assignment_expression_opt AT assignment_expression ';' |
---|
| 833 | { $$ = new StatementNode( StatementNode::Throw, $2, 0 ); } |
---|
| 834 | // | THROWRESUME ';' |
---|
| 835 | // { $$ = new StatementNode( StatementNode::Throw ); } |
---|
[4d51835] | 836 | ; |
---|
[51b7345] | 837 | |
---|
| 838 | exception_statement: |
---|
[4d51835] | 839 | TRY compound_statement handler_list |
---|
[de62360d] | 840 | { $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); } |
---|
[4d51835] | 841 | | TRY compound_statement finally_clause |
---|
[de62360d] | 842 | { $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); } |
---|
[4d51835] | 843 | | TRY compound_statement handler_list finally_clause |
---|
| 844 | { |
---|
[de62360d] | 845 | $3->set_link( $4 ); |
---|
| 846 | $$ = new StatementNode( StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3 )))); |
---|
[4d51835] | 847 | } |
---|
| 848 | ; |
---|
[51b7345] | 849 | |
---|
| 850 | handler_list: |
---|
[4d51835] | 851 | // There must be at least one catch clause |
---|
| 852 | handler_clause |
---|
[de62360d] | 853 | // ISO/IEC 9899:1999 Section 15.3(6 ) If present, a "..." handler shall be the last handler for its try block. |
---|
[4d51835] | 854 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 855 | { $$ = StatementNode::newCatchStmt( 0, $5, true ); } |
---|
| 856 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 857 | { $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); } |
---|
[02e5ab6] | 858 | | CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
| 859 | { $$ = StatementNode::newCatchStmt( 0, $5, true ); } |
---|
| 860 | | handler_clause CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
| 861 | { $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); } |
---|
[4d51835] | 862 | ; |
---|
[51b7345] | 863 | |
---|
| 864 | handler_clause: |
---|
[4d51835] | 865 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[de62360d] | 866 | { $$ = StatementNode::newCatchStmt( $5, $8 ); } |
---|
[4d51835] | 867 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[de62360d] | 868 | { $$ = $1->set_link( StatementNode::newCatchStmt( $6, $9 ) ); } |
---|
[02e5ab6] | 869 | | CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
| 870 | { $$ = StatementNode::newCatchStmt( $5, $8 ); } |
---|
| 871 | | handler_clause CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
| 872 | { $$ = $1->set_link( StatementNode::newCatchStmt( $6, $9 ) ); } |
---|
[4d51835] | 873 | ; |
---|
[51b7345] | 874 | |
---|
| 875 | finally_clause: |
---|
[4d51835] | 876 | FINALLY compound_statement |
---|
| 877 | { |
---|
[de62360d] | 878 | $$ = new StatementNode( StatementNode::Finally, 0, $2 ); |
---|
[4d51835] | 879 | std::cout << "Just created a finally node" << std::endl; |
---|
| 880 | } |
---|
| 881 | ; |
---|
[51b7345] | 882 | |
---|
| 883 | exception_declaration: |
---|
[4d51835] | 884 | // A semantic check is required to ensure type_specifier does not create a new type, e.g.: |
---|
| 885 | // |
---|
| 886 | // catch ( struct { int i; } x ) ... |
---|
| 887 | // |
---|
| 888 | // This new type cannot catch any thrown type because of name equivalence among types. |
---|
| 889 | type_specifier |
---|
| 890 | | type_specifier declarator |
---|
| 891 | { |
---|
| 892 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 893 | $$ = $2->addType( $1 ); |
---|
| 894 | } |
---|
| 895 | | type_specifier variable_abstract_declarator |
---|
| 896 | { $$ = $2->addType( $1 ); } |
---|
| 897 | | new_abstract_declarator_tuple no_attr_identifier // CFA |
---|
| 898 | { |
---|
| 899 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 900 | $$ = $1->addName( $2 ); |
---|
| 901 | } |
---|
| 902 | | new_abstract_declarator_tuple // CFA |
---|
| 903 | ; |
---|
[51b7345] | 904 | |
---|
| 905 | asm_statement: |
---|
[7f5566b] | 906 | ASM asm_volatile_opt '(' string_literal_list ')' ';' |
---|
| 907 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, 0 ); } |
---|
| 908 | | ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ')' ';' // remaining GCC |
---|
| 909 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6 ); } |
---|
| 910 | | ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
| 911 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6, $8 ); } |
---|
| 912 | | ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';' |
---|
| 913 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6, $8, $10 ); } |
---|
| 914 | | ASM asm_volatile_opt GOTO '(' string_literal_list ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';' |
---|
| 915 | { $$ = new AsmStmtNode( StatementNode::Asm, $2, $5, 0, $8, $10, $12 ); } |
---|
| 916 | ; |
---|
| 917 | |
---|
| 918 | asm_volatile_opt: // GCC |
---|
| 919 | // empty |
---|
| 920 | { $$ = false; } |
---|
| 921 | | VOLATILE |
---|
| 922 | { $$ = true; } |
---|
[4d51835] | 923 | ; |
---|
[b87a5ed] | 924 | |
---|
| 925 | asm_operands_opt: // GCC |
---|
[4d51835] | 926 | // empty |
---|
[7f5566b] | 927 | { $$ = 0; } // use default argument |
---|
[4d51835] | 928 | | asm_operands_list |
---|
| 929 | ; |
---|
[b87a5ed] | 930 | |
---|
| 931 | asm_operands_list: // GCC |
---|
[4d51835] | 932 | asm_operand |
---|
| 933 | | asm_operands_list ',' asm_operand |
---|
[7f5566b] | 934 | { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
[4d51835] | 935 | ; |
---|
[b87a5ed] | 936 | |
---|
| 937 | asm_operand: // GCC |
---|
[7f5566b] | 938 | string_literal_list '(' constant_expression ')' |
---|
| 939 | { $$ = new AsmExprNode( 0, $1, $3 ); } |
---|
| 940 | | '[' constant_expression ']' string_literal_list '(' constant_expression ')' |
---|
| 941 | { $$ = new AsmExprNode( $2, $4, $6 ); } |
---|
| 942 | ; |
---|
| 943 | |
---|
| 944 | asm_clobbers_list_opt: // GCC |
---|
| 945 | // empty |
---|
| 946 | { $$ = 0; } // use default argument |
---|
| 947 | | string_literal_list |
---|
| 948 | { $$ = $1; } |
---|
| 949 | | asm_clobbers_list_opt ',' string_literal_list |
---|
| 950 | { $$ = (ConstantNode *)$1->set_link( $3 ); } |
---|
[4d51835] | 951 | ; |
---|
[b87a5ed] | 952 | |
---|
[7f5566b] | 953 | label_list: |
---|
| 954 | no_attr_identifier |
---|
| 955 | { $$ = new LabelNode(); $$->append_label( $1 ); } |
---|
| 956 | | label_list ',' no_attr_identifier |
---|
| 957 | { $$ = $1; $1->append_label( $3 ); } |
---|
[4d51835] | 958 | ; |
---|
[51b7345] | 959 | |
---|
[c11e31c] | 960 | //******************************* DECLARATIONS ********************************* |
---|
[51b7345] | 961 | |
---|
[b87a5ed] | 962 | declaration_list_opt: // used at beginning of switch statement |
---|
[4d51835] | 963 | pop |
---|
| 964 | { $$ = 0; } |
---|
| 965 | | declaration_list |
---|
| 966 | ; |
---|
[51b7345] | 967 | |
---|
| 968 | declaration_list: |
---|
[4d51835] | 969 | declaration |
---|
| 970 | | declaration_list push declaration |
---|
| 971 | { $$ = $1->appendList( $3 ); } |
---|
| 972 | ; |
---|
[51b7345] | 973 | |
---|
[b87a5ed] | 974 | old_declaration_list_opt: // used to declare parameter types in K&R style functions |
---|
[4d51835] | 975 | pop |
---|
| 976 | { $$ = 0; } |
---|
| 977 | | old_declaration_list |
---|
| 978 | ; |
---|
[51b7345] | 979 | |
---|
| 980 | old_declaration_list: |
---|
[4d51835] | 981 | old_declaration |
---|
| 982 | | old_declaration_list push old_declaration |
---|
| 983 | { $$ = $1->appendList( $3 ); } |
---|
| 984 | ; |
---|
[b87a5ed] | 985 | |
---|
[51b1202] | 986 | local_label_declaration_opt: // GCC, local label |
---|
[4d51835] | 987 | // empty |
---|
[51b1202] | 988 | | local_label_declaration_list |
---|
[4d51835] | 989 | ; |
---|
[b87a5ed] | 990 | |
---|
[51b1202] | 991 | local_label_declaration_list: // GCC, local label |
---|
| 992 | LABEL local_label_list ';' |
---|
| 993 | | local_label_declaration_list LABEL local_label_list ';' |
---|
[4d51835] | 994 | ; |
---|
[b87a5ed] | 995 | |
---|
[51b1202] | 996 | local_label_list: // GCC, local label |
---|
[7f5566b] | 997 | no_attr_identifier_or_type_name {} |
---|
[51b1202] | 998 | | local_label_list ',' no_attr_identifier_or_type_name {} |
---|
[4d51835] | 999 | ; |
---|
[b87a5ed] | 1000 | |
---|
| 1001 | declaration: // CFA, new & old style declarations |
---|
[4d51835] | 1002 | new_declaration |
---|
| 1003 | | old_declaration |
---|
| 1004 | ; |
---|
[b87a5ed] | 1005 | |
---|
[de62360d] | 1006 | // C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function |
---|
| 1007 | // declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to |
---|
| 1008 | // the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration |
---|
| 1009 | // modifiers are interpreted from left to right and the entire type specification is distributed across all variables in |
---|
| 1010 | // the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program |
---|
| 1011 | // block, but cannot be mixed within a specific declaration. |
---|
[c11e31c] | 1012 | // |
---|
[b87a5ed] | 1013 | // CFA C |
---|
| 1014 | // [10] int x; int x[10]; // array of 10 integers |
---|
| 1015 | // [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
| 1016 | |
---|
| 1017 | new_declaration: // CFA |
---|
[4d51835] | 1018 | new_variable_declaration pop ';' |
---|
| 1019 | | new_typedef_declaration pop ';' |
---|
| 1020 | | new_function_declaration pop ';' |
---|
| 1021 | | type_declaring_list pop ';' |
---|
| 1022 | | context_specifier pop ';' |
---|
| 1023 | ; |
---|
[b87a5ed] | 1024 | |
---|
| 1025 | new_variable_declaration: // CFA |
---|
[4d51835] | 1026 | new_variable_specifier initializer_opt |
---|
| 1027 | { |
---|
| 1028 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1029 | $$ = $1; |
---|
| 1030 | } |
---|
| 1031 | | declaration_qualifier_list new_variable_specifier initializer_opt |
---|
[de62360d] | 1032 | // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude |
---|
| 1033 | // them as a type_qualifier cannot appear in that context. |
---|
[4d51835] | 1034 | { |
---|
| 1035 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1036 | $$ = $2->addQualifiers( $1 ); |
---|
| 1037 | } |
---|
[2871210] | 1038 | | new_variable_declaration pop ',' push identifier_or_type_name initializer_opt |
---|
[4d51835] | 1039 | { |
---|
| 1040 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 1041 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1042 | } |
---|
| 1043 | ; |
---|
[b87a5ed] | 1044 | |
---|
| 1045 | new_variable_specifier: // CFA |
---|
[de62360d] | 1046 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1047 | // storage-class |
---|
[2871210] | 1048 | new_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1049 | { |
---|
| 1050 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1051 | $$ = $1->addName( $2 ); |
---|
| 1052 | } |
---|
[2871210] | 1053 | | new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1054 | { |
---|
| 1055 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1056 | $$ = $1->addName( $2 ); |
---|
| 1057 | } |
---|
[2871210] | 1058 | | type_qualifier_list new_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1059 | { |
---|
| 1060 | typedefTable.setNextIdentifier( *$3 ); |
---|
| 1061 | $$ = $2->addQualifiers( $1 )->addName( $3 ); |
---|
| 1062 | } |
---|
| 1063 | ; |
---|
[b87a5ed] | 1064 | |
---|
| 1065 | new_function_declaration: // CFA |
---|
[4d51835] | 1066 | new_function_specifier |
---|
| 1067 | { |
---|
| 1068 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1069 | $$ = $1; |
---|
| 1070 | } |
---|
| 1071 | | type_qualifier_list new_function_specifier |
---|
| 1072 | { |
---|
| 1073 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1074 | $$ = $2->addQualifiers( $1 ); |
---|
| 1075 | } |
---|
| 1076 | | declaration_qualifier_list new_function_specifier |
---|
| 1077 | { |
---|
| 1078 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1079 | $$ = $2->addQualifiers( $1 ); |
---|
| 1080 | } |
---|
| 1081 | | declaration_qualifier_list type_qualifier_list new_function_specifier |
---|
| 1082 | { |
---|
| 1083 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1084 | $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); |
---|
| 1085 | } |
---|
[2871210] | 1086 | | new_function_declaration pop ',' push identifier_or_type_name |
---|
[4d51835] | 1087 | { |
---|
| 1088 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 1089 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1090 | } |
---|
| 1091 | ; |
---|
[b87a5ed] | 1092 | |
---|
| 1093 | new_function_specifier: // CFA |
---|
[2871210] | 1094 | '[' ']' identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' // S/R conflict |
---|
[4d51835] | 1095 | { |
---|
[2871210] | 1096 | $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true ); |
---|
[4d51835] | 1097 | } |
---|
[2871210] | 1098 | // '[' ']' identifier '(' push new_parameter_type_list_opt pop ')' |
---|
| 1099 | // { |
---|
| 1100 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1101 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1102 | // } |
---|
| 1103 | // | '[' ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')' |
---|
| 1104 | // { |
---|
| 1105 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1106 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1107 | // } |
---|
| 1108 | // | '[' ']' typegen_name |
---|
| 1109 | // identifier_or_type_name must be broken apart because of the sequence: |
---|
[4d51835] | 1110 | // |
---|
[2871210] | 1111 | // '[' ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[4d51835] | 1112 | // '[' ']' type_specifier |
---|
| 1113 | // |
---|
[2871210] | 1114 | // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be |
---|
| 1115 | // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name. |
---|
| 1116 | | new_abstract_tuple identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[de62360d] | 1117 | // To obtain LR(1 ), this rule must be factored out from function return type (see new_abstract_declarator). |
---|
[4d51835] | 1118 | { |
---|
| 1119 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1120 | } |
---|
[2871210] | 1121 | | new_function_return identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' |
---|
[4d51835] | 1122 | { |
---|
| 1123 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1124 | } |
---|
| 1125 | ; |
---|
[b87a5ed] | 1126 | |
---|
| 1127 | new_function_return: // CFA |
---|
[4d51835] | 1128 | '[' push new_parameter_list pop ']' |
---|
| 1129 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 1130 | | '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']' |
---|
[de62360d] | 1131 | // To obtain LR(1 ), the last new_abstract_parameter_list is added into this flattened rule to lookahead to the |
---|
| 1132 | // ']'. |
---|
[4d51835] | 1133 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
| 1134 | ; |
---|
[b87a5ed] | 1135 | |
---|
| 1136 | new_typedef_declaration: // CFA |
---|
[4d51835] | 1137 | TYPEDEF new_variable_specifier |
---|
| 1138 | { |
---|
[de62360d] | 1139 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1140 | $$ = $2->addTypedef(); |
---|
| 1141 | } |
---|
| 1142 | | TYPEDEF new_function_specifier |
---|
| 1143 | { |
---|
[de62360d] | 1144 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1145 | $$ = $2->addTypedef(); |
---|
| 1146 | } |
---|
| 1147 | | new_typedef_declaration pop ',' push no_attr_identifier |
---|
| 1148 | { |
---|
[de62360d] | 1149 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1150 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1151 | } |
---|
| 1152 | ; |
---|
[b87a5ed] | 1153 | |
---|
[de62360d] | 1154 | // Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as |
---|
| 1155 | // a separate form of declaration, which syntactically precludes storage-class specifiers and initialization. |
---|
[51b7345] | 1156 | |
---|
| 1157 | typedef_declaration: |
---|
[4d51835] | 1158 | TYPEDEF type_specifier declarator |
---|
| 1159 | { |
---|
[de62360d] | 1160 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1161 | $$ = $3->addType( $2 )->addTypedef(); |
---|
| 1162 | } |
---|
| 1163 | | typedef_declaration pop ',' push declarator |
---|
| 1164 | { |
---|
[de62360d] | 1165 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1166 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
| 1167 | } |
---|
[de62360d] | 1168 | | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1169 | { |
---|
[de62360d] | 1170 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1171 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
| 1172 | } |
---|
| 1173 | | type_specifier TYPEDEF declarator |
---|
| 1174 | { |
---|
[de62360d] | 1175 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1176 | $$ = $3->addType( $1 )->addTypedef(); |
---|
| 1177 | } |
---|
| 1178 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
| 1179 | { |
---|
[de62360d] | 1180 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
| 1181 | $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 ); |
---|
[4d51835] | 1182 | } |
---|
| 1183 | ; |
---|
[b87a5ed] | 1184 | |
---|
[721f17a] | 1185 | typedef_expression: |
---|
| 1186 | // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression |
---|
[4d51835] | 1187 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
| 1188 | { |
---|
[de62360d] | 1189 | typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); |
---|
[4d51835] | 1190 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1191 | } |
---|
| 1192 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
| 1193 | { |
---|
[de62360d] | 1194 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1195 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1196 | } |
---|
| 1197 | ; |
---|
[51b7345] | 1198 | |
---|
| 1199 | old_declaration: |
---|
[4d51835] | 1200 | declaring_list pop ';' |
---|
| 1201 | | typedef_declaration pop ';' |
---|
| 1202 | | typedef_expression pop ';' // GCC, naming expression type |
---|
| 1203 | | sue_declaration_specifier pop ';' |
---|
| 1204 | ; |
---|
[51b7345] | 1205 | |
---|
| 1206 | declaring_list: |
---|
[de62360d] | 1207 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1208 | // storage-class |
---|
[4d51835] | 1209 | declaration_specifier declarator asm_name_opt initializer_opt |
---|
| 1210 | { |
---|
| 1211 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1212 | $$ = ( $2->addType( $1 ))->addInitializer( $4 ); |
---|
[4d51835] | 1213 | } |
---|
| 1214 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1215 | { |
---|
| 1216 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1217 | $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer( $6 ) ) ); |
---|
[4d51835] | 1218 | } |
---|
| 1219 | ; |
---|
[b87a5ed] | 1220 | |
---|
| 1221 | declaration_specifier: // type specifier + storage class |
---|
[4d51835] | 1222 | basic_declaration_specifier |
---|
| 1223 | | sue_declaration_specifier |
---|
| 1224 | | typedef_declaration_specifier |
---|
| 1225 | | typegen_declaration_specifier |
---|
| 1226 | ; |
---|
[b87a5ed] | 1227 | |
---|
| 1228 | type_specifier: // declaration specifier - storage class |
---|
[4d51835] | 1229 | basic_type_specifier |
---|
| 1230 | | sue_type_specifier |
---|
| 1231 | | typedef_type_specifier |
---|
| 1232 | | typegen_type_specifier |
---|
| 1233 | ; |
---|
[b87a5ed] | 1234 | |
---|
| 1235 | type_qualifier_list_opt: // GCC, used in asm_statement |
---|
[4d51835] | 1236 | // empty |
---|
| 1237 | { $$ = 0; } |
---|
| 1238 | | type_qualifier_list |
---|
| 1239 | ; |
---|
[51b7345] | 1240 | |
---|
| 1241 | type_qualifier_list: |
---|
[de62360d] | 1242 | // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration. |
---|
[4d51835] | 1243 | // |
---|
[de62360d] | 1244 | // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same |
---|
| 1245 | // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it |
---|
| 1246 | // appeared only once. |
---|
[4d51835] | 1247 | type_qualifier |
---|
| 1248 | | type_qualifier_list type_qualifier |
---|
| 1249 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1250 | ; |
---|
[51b7345] | 1251 | |
---|
| 1252 | type_qualifier: |
---|
[4d51835] | 1253 | type_qualifier_name |
---|
| 1254 | | attribute |
---|
[1db21619] | 1255 | //{ $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
[4d51835] | 1256 | ; |
---|
[51b7345] | 1257 | |
---|
| 1258 | type_qualifier_name: |
---|
[4d51835] | 1259 | CONST |
---|
| 1260 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
| 1261 | | RESTRICT |
---|
| 1262 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); } |
---|
| 1263 | | VOLATILE |
---|
| 1264 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); } |
---|
| 1265 | | LVALUE // CFA |
---|
| 1266 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); } |
---|
| 1267 | | ATOMIC |
---|
| 1268 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); } |
---|
| 1269 | | FORALL '(' |
---|
| 1270 | { |
---|
| 1271 | typedefTable.enterScope(); |
---|
| 1272 | } |
---|
| 1273 | type_parameter_list ')' // CFA |
---|
| 1274 | { |
---|
| 1275 | typedefTable.leaveScope(); |
---|
| 1276 | $$ = DeclarationNode::newForall( $4 ); |
---|
| 1277 | } |
---|
| 1278 | ; |
---|
[51b7345] | 1279 | |
---|
| 1280 | declaration_qualifier_list: |
---|
[4d51835] | 1281 | storage_class_list |
---|
[de62360d] | 1282 | | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1283 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1284 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
| 1285 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1286 | ; |
---|
[51b7345] | 1287 | |
---|
| 1288 | storage_class_list: |
---|
[de62360d] | 1289 | // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that |
---|
| 1290 | // only one of each is specified, except for inline, which can appear with the others. |
---|
[4d51835] | 1291 | // |
---|
[de62360d] | 1292 | // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration |
---|
| 1293 | // specifiers in a declaration. |
---|
[4d51835] | 1294 | storage_class |
---|
| 1295 | | storage_class_list storage_class |
---|
| 1296 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1297 | ; |
---|
[51b7345] | 1298 | |
---|
| 1299 | storage_class: |
---|
[4d51835] | 1300 | storage_class_name |
---|
| 1301 | ; |
---|
[51b7345] | 1302 | |
---|
| 1303 | storage_class_name: |
---|
[4d51835] | 1304 | EXTERN |
---|
| 1305 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); } |
---|
| 1306 | | STATIC |
---|
| 1307 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); } |
---|
| 1308 | | AUTO |
---|
| 1309 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); } |
---|
| 1310 | | REGISTER |
---|
| 1311 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); } |
---|
| 1312 | | INLINE // C99 |
---|
| 1313 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); } |
---|
| 1314 | | FORTRAN // C99 |
---|
| 1315 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); } |
---|
[68cd1ce] | 1316 | | NORETURN // C11 |
---|
| 1317 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Noreturn ); } |
---|
| 1318 | | THREADLOCAL // C11 |
---|
| 1319 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Threadlocal ); } |
---|
[4d51835] | 1320 | ; |
---|
[51b7345] | 1321 | |
---|
| 1322 | basic_type_name: |
---|
[4d51835] | 1323 | CHAR |
---|
| 1324 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
| 1325 | | DOUBLE |
---|
| 1326 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
| 1327 | | FLOAT |
---|
| 1328 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
| 1329 | | INT |
---|
| 1330 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
| 1331 | | LONG |
---|
| 1332 | { $$ = DeclarationNode::newModifier( DeclarationNode::Long ); } |
---|
| 1333 | | SHORT |
---|
| 1334 | { $$ = DeclarationNode::newModifier( DeclarationNode::Short ); } |
---|
| 1335 | | SIGNED |
---|
| 1336 | { $$ = DeclarationNode::newModifier( DeclarationNode::Signed ); } |
---|
| 1337 | | UNSIGNED |
---|
| 1338 | { $$ = DeclarationNode::newModifier( DeclarationNode::Unsigned ); } |
---|
| 1339 | | VOID |
---|
| 1340 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
| 1341 | | BOOL // C99 |
---|
| 1342 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
| 1343 | | COMPLEX // C99 |
---|
| 1344 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); } |
---|
| 1345 | | IMAGINARY // C99 |
---|
| 1346 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); } |
---|
| 1347 | ; |
---|
[51b7345] | 1348 | |
---|
| 1349 | basic_declaration_specifier: |
---|
[4d51835] | 1350 | // A semantic check is necessary for conflicting storage classes. |
---|
| 1351 | basic_type_specifier |
---|
| 1352 | | declaration_qualifier_list basic_type_specifier |
---|
| 1353 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1354 | | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1355 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1356 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
| 1357 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1358 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
| 1359 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
| 1360 | ; |
---|
[51b7345] | 1361 | |
---|
| 1362 | basic_type_specifier: |
---|
[4d51835] | 1363 | direct_type_name |
---|
| 1364 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
| 1365 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
| 1366 | ; |
---|
[51b7345] | 1367 | |
---|
| 1368 | direct_type_name: |
---|
[4d51835] | 1369 | // A semantic check is necessary for conflicting type qualifiers. |
---|
| 1370 | basic_type_name |
---|
| 1371 | | type_qualifier_list basic_type_name |
---|
| 1372 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1373 | | direct_type_name type_qualifier |
---|
| 1374 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1375 | | direct_type_name basic_type_name |
---|
| 1376 | { $$ = $1->addType( $2 ); } |
---|
| 1377 | ; |
---|
[51b7345] | 1378 | |
---|
| 1379 | indirect_type_name: |
---|
[4d51835] | 1380 | TYPEOF '(' type_name ')' // GCC: typeof(x) y; |
---|
| 1381 | { $$ = $3; } |
---|
| 1382 | | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y; |
---|
| 1383 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
| 1384 | | ATTR_TYPEGENname '(' type_name ')' // CFA: e.g., @type(x) y; |
---|
| 1385 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1386 | | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y; |
---|
| 1387 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1388 | ; |
---|
[51b7345] | 1389 | |
---|
| 1390 | sue_declaration_specifier: |
---|
[4d51835] | 1391 | sue_type_specifier |
---|
| 1392 | | declaration_qualifier_list sue_type_specifier |
---|
| 1393 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1394 | | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1395 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1396 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
| 1397 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1398 | ; |
---|
[51b7345] | 1399 | |
---|
| 1400 | sue_type_specifier: |
---|
[4d51835] | 1401 | elaborated_type_name // struct, union, enum |
---|
| 1402 | | type_qualifier_list elaborated_type_name |
---|
| 1403 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1404 | | sue_type_specifier type_qualifier |
---|
| 1405 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1406 | ; |
---|
[51b7345] | 1407 | |
---|
| 1408 | typedef_declaration_specifier: |
---|
[4d51835] | 1409 | typedef_type_specifier |
---|
| 1410 | | declaration_qualifier_list typedef_type_specifier |
---|
| 1411 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1412 | | typedef_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1413 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1414 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
| 1415 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1416 | ; |
---|
[b87a5ed] | 1417 | |
---|
| 1418 | typedef_type_specifier: // typedef types |
---|
[4d51835] | 1419 | TYPEDEFname |
---|
| 1420 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
| 1421 | | type_qualifier_list TYPEDEFname |
---|
| 1422 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
| 1423 | | typedef_type_specifier type_qualifier |
---|
| 1424 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1425 | ; |
---|
[51b7345] | 1426 | |
---|
| 1427 | elaborated_type_name: |
---|
[4d51835] | 1428 | aggregate_name |
---|
| 1429 | | enum_name |
---|
| 1430 | ; |
---|
[51b7345] | 1431 | |
---|
| 1432 | aggregate_name: |
---|
[4d51835] | 1433 | aggregate_key '{' field_declaration_list '}' |
---|
[721f17a] | 1434 | { $$ = DeclarationNode::newAggregate( $1, 0, 0, $3 ); } |
---|
[2871210] | 1435 | | aggregate_key no_attr_identifier_or_type_name |
---|
[721f17a] | 1436 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, 0 ); } |
---|
[2871210] | 1437 | | aggregate_key no_attr_identifier_or_type_name '{' field_declaration_list '}' |
---|
[721f17a] | 1438 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, $4 ); } |
---|
| 1439 | | aggregate_key '(' type_name_list ')' '{' field_declaration_list '}' // CFA |
---|
| 1440 | { $$ = DeclarationNode::newAggregate( $1, 0, $3, $6 ); } |
---|
[2871210] | 1441 | | aggregate_key typegen_name // CFA, S/R conflict |
---|
| 1442 | { $$ = $2; } |
---|
[4d51835] | 1443 | ; |
---|
[51b7345] | 1444 | |
---|
| 1445 | aggregate_key: |
---|
[4d51835] | 1446 | STRUCT attribute_list_opt |
---|
| 1447 | { $$ = DeclarationNode::Struct; } |
---|
| 1448 | | UNION attribute_list_opt |
---|
| 1449 | { $$ = DeclarationNode::Union; } |
---|
| 1450 | ; |
---|
[51b7345] | 1451 | |
---|
| 1452 | field_declaration_list: |
---|
[4d51835] | 1453 | field_declaration |
---|
| 1454 | { $$ = $1; } |
---|
| 1455 | | field_declaration_list field_declaration |
---|
| 1456 | { $$ = $1->appendList( $2 ); } |
---|
| 1457 | ; |
---|
[51b7345] | 1458 | |
---|
| 1459 | field_declaration: |
---|
[4d51835] | 1460 | new_field_declaring_list ';' // CFA, new style field declaration |
---|
| 1461 | | EXTENSION new_field_declaring_list ';' // GCC |
---|
| 1462 | { $$ = $2; } |
---|
| 1463 | | field_declaring_list ';' |
---|
| 1464 | | EXTENSION field_declaring_list ';' // GCC |
---|
| 1465 | { $$ = $2; } |
---|
| 1466 | ; |
---|
[b87a5ed] | 1467 | |
---|
| 1468 | new_field_declaring_list: // CFA, new style field declaration |
---|
[4d51835] | 1469 | new_abstract_declarator_tuple // CFA, no field name |
---|
[2871210] | 1470 | | new_abstract_declarator_tuple no_attr_identifier_or_type_name |
---|
[4d51835] | 1471 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1472 | | new_field_declaring_list ',' no_attr_identifier_or_type_name |
---|
[4d51835] | 1473 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
| 1474 | | new_field_declaring_list ',' // CFA, no field name |
---|
| 1475 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
| 1476 | ; |
---|
[51b7345] | 1477 | |
---|
| 1478 | field_declaring_list: |
---|
[4d51835] | 1479 | type_specifier field_declarator |
---|
| 1480 | { $$ = $2->addType( $1 ); } |
---|
| 1481 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
| 1482 | { $$ = $1->appendList( $1->cloneBaseType( $4 ) ); } |
---|
| 1483 | ; |
---|
[51b7345] | 1484 | |
---|
| 1485 | field_declarator: |
---|
[4d51835] | 1486 | // empty |
---|
| 1487 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name |
---|
| 1488 | | bit_subrange_size // no field name |
---|
| 1489 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
| 1490 | | variable_declarator bit_subrange_size_opt |
---|
| 1491 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1492 | { $$ = $1->addBitfield( $2 ); } |
---|
[2871210] | 1493 | | type_redeclarator bit_subrange_size_opt |
---|
[4d51835] | 1494 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1495 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1496 | | variable_abstract_declarator // CFA, no field name |
---|
| 1497 | ; |
---|
[51b7345] | 1498 | |
---|
| 1499 | bit_subrange_size_opt: |
---|
[4d51835] | 1500 | // empty |
---|
| 1501 | { $$ = 0; } |
---|
| 1502 | | bit_subrange_size |
---|
| 1503 | { $$ = $1; } |
---|
| 1504 | ; |
---|
[51b7345] | 1505 | |
---|
| 1506 | bit_subrange_size: |
---|
[4d51835] | 1507 | ':' constant_expression |
---|
| 1508 | { $$ = $2; } |
---|
| 1509 | ; |
---|
[51b7345] | 1510 | |
---|
| 1511 | enum_key: |
---|
[4d51835] | 1512 | ENUM attribute_list_opt |
---|
| 1513 | ; |
---|
[51b7345] | 1514 | |
---|
| 1515 | enum_name: |
---|
[4d51835] | 1516 | enum_key '{' enumerator_list comma_opt '}' |
---|
| 1517 | { $$ = DeclarationNode::newEnum( 0, $3 ); } |
---|
[2871210] | 1518 | | enum_key no_attr_identifier_or_type_name '{' enumerator_list comma_opt '}' |
---|
[4d51835] | 1519 | { $$ = DeclarationNode::newEnum( $2, $4 ); } |
---|
[2871210] | 1520 | | enum_key no_attr_identifier_or_type_name |
---|
[4d51835] | 1521 | { $$ = DeclarationNode::newEnum( $2, 0 ); } |
---|
| 1522 | ; |
---|
[51b7345] | 1523 | |
---|
| 1524 | enumerator_list: |
---|
[2871210] | 1525 | no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1526 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
[2871210] | 1527 | | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1528 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
| 1529 | ; |
---|
[51b7345] | 1530 | |
---|
| 1531 | enumerator_value_opt: |
---|
[4d51835] | 1532 | // empty |
---|
| 1533 | { $$ = 0; } |
---|
| 1534 | | '=' constant_expression |
---|
| 1535 | { $$ = $2; } |
---|
| 1536 | ; |
---|
[51b7345] | 1537 | |
---|
[c11e31c] | 1538 | // Minimum of one parameter after which ellipsis is allowed only at the end. |
---|
[51b7345] | 1539 | |
---|
[b87a5ed] | 1540 | new_parameter_type_list_opt: // CFA |
---|
[4d51835] | 1541 | // empty |
---|
| 1542 | { $$ = 0; } |
---|
| 1543 | | new_parameter_type_list |
---|
| 1544 | ; |
---|
[b87a5ed] | 1545 | |
---|
| 1546 | new_parameter_type_list: // CFA, abstract + real |
---|
[4d51835] | 1547 | new_abstract_parameter_list |
---|
| 1548 | | new_parameter_list |
---|
| 1549 | | new_parameter_list pop ',' push new_abstract_parameter_list |
---|
| 1550 | { $$ = $1->appendList( $5 ); } |
---|
| 1551 | | new_abstract_parameter_list pop ',' push ELLIPSIS |
---|
| 1552 | { $$ = $1->addVarArgs(); } |
---|
| 1553 | | new_parameter_list pop ',' push ELLIPSIS |
---|
| 1554 | { $$ = $1->addVarArgs(); } |
---|
| 1555 | ; |
---|
[b87a5ed] | 1556 | |
---|
| 1557 | new_parameter_list: // CFA |
---|
[de62360d] | 1558 | // To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last new_abstract_parameter_list is |
---|
| 1559 | // factored out from new_parameter_list, flattening the rules to get lookahead to the ']'. |
---|
[4d51835] | 1560 | new_parameter_declaration |
---|
| 1561 | | new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1562 | { $$ = $1->appendList( $5 ); } |
---|
| 1563 | | new_parameter_list pop ',' push new_parameter_declaration |
---|
| 1564 | { $$ = $1->appendList( $5 ); } |
---|
| 1565 | | new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1566 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
| 1567 | ; |
---|
[b87a5ed] | 1568 | |
---|
| 1569 | new_abstract_parameter_list: // CFA, new & old style abstract |
---|
[4d51835] | 1570 | new_abstract_parameter_declaration |
---|
| 1571 | | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration |
---|
| 1572 | { $$ = $1->appendList( $5 ); } |
---|
| 1573 | ; |
---|
[51b7345] | 1574 | |
---|
| 1575 | parameter_type_list_opt: |
---|
[4d51835] | 1576 | // empty |
---|
| 1577 | { $$ = 0; } |
---|
| 1578 | | parameter_type_list |
---|
| 1579 | ; |
---|
[51b7345] | 1580 | |
---|
| 1581 | parameter_type_list: |
---|
[4d51835] | 1582 | parameter_list |
---|
| 1583 | | parameter_list pop ',' push ELLIPSIS |
---|
| 1584 | { $$ = $1->addVarArgs(); } |
---|
| 1585 | ; |
---|
[b87a5ed] | 1586 | |
---|
| 1587 | parameter_list: // abstract + real |
---|
[4d51835] | 1588 | abstract_parameter_declaration |
---|
| 1589 | | parameter_declaration |
---|
| 1590 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
| 1591 | { $$ = $1->appendList( $5 ); } |
---|
| 1592 | | parameter_list pop ',' push parameter_declaration |
---|
| 1593 | { $$ = $1->appendList( $5 ); } |
---|
| 1594 | ; |
---|
[51b7345] | 1595 | |
---|
[de62360d] | 1596 | // Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics |
---|
[2871210] | 1597 | // for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes. |
---|
[51b7345] | 1598 | |
---|
[b87a5ed] | 1599 | new_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1600 | parameter_declaration |
---|
[2871210] | 1601 | | new_identifier_parameter_declarator_no_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1602 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1603 | | new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1604 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1605 | { $$ = $1->addName( $2 ); } |
---|
[2871210] | 1606 | | type_qualifier_list new_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1607 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
| 1608 | | new_function_specifier |
---|
| 1609 | ; |
---|
[b87a5ed] | 1610 | |
---|
| 1611 | new_abstract_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1612 | abstract_parameter_declaration |
---|
| 1613 | | new_identifier_parameter_declarator_no_tuple |
---|
| 1614 | | new_abstract_tuple |
---|
| 1615 | // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). |
---|
| 1616 | | type_qualifier_list new_abstract_tuple |
---|
| 1617 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1618 | | new_abstract_function |
---|
| 1619 | ; |
---|
[51b7345] | 1620 | |
---|
| 1621 | parameter_declaration: |
---|
[4d51835] | 1622 | declaration_specifier identifier_parameter_declarator assignment_opt |
---|
| 1623 | { |
---|
| 1624 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1625 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1626 | } |
---|
[2871210] | 1627 | | declaration_specifier type_parameter_redeclarator assignment_opt |
---|
[4d51835] | 1628 | { |
---|
| 1629 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[de62360d] | 1630 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) ); |
---|
[4d51835] | 1631 | } |
---|
| 1632 | ; |
---|
[51b7345] | 1633 | |
---|
| 1634 | abstract_parameter_declaration: |
---|
[4d51835] | 1635 | declaration_specifier |
---|
| 1636 | | declaration_specifier abstract_parameter_declarator |
---|
| 1637 | { $$ = $2->addType( $1 ); } |
---|
| 1638 | ; |
---|
[51b7345] | 1639 | |
---|
[c11e31c] | 1640 | // ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
[de62360d] | 1641 | // parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on |
---|
| 1642 | // identifiers. The ANSI-style parameter-list can redefine a typedef name. |
---|
[51b7345] | 1643 | |
---|
[b87a5ed] | 1644 | identifier_list: // K&R-style parameter list => no types |
---|
[4d51835] | 1645 | no_attr_identifier |
---|
| 1646 | { $$ = DeclarationNode::newName( $1 ); } |
---|
| 1647 | | identifier_list ',' no_attr_identifier |
---|
| 1648 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
| 1649 | ; |
---|
[51b7345] | 1650 | |
---|
[2871210] | 1651 | identifier_or_type_name: |
---|
[4d51835] | 1652 | identifier |
---|
| 1653 | | TYPEDEFname |
---|
| 1654 | | TYPEGENname |
---|
| 1655 | ; |
---|
[51b7345] | 1656 | |
---|
[2871210] | 1657 | no_01_identifier_or_type_name: |
---|
[4d51835] | 1658 | no_01_identifier |
---|
| 1659 | | TYPEDEFname |
---|
| 1660 | | TYPEGENname |
---|
| 1661 | ; |
---|
[51b7345] | 1662 | |
---|
[2871210] | 1663 | no_attr_identifier_or_type_name: |
---|
[4d51835] | 1664 | no_attr_identifier |
---|
| 1665 | | TYPEDEFname |
---|
[721f17a] | 1666 | | TYPEGENname |
---|
[4d51835] | 1667 | ; |
---|
[b87a5ed] | 1668 | |
---|
| 1669 | type_name_no_function: // sizeof, alignof, cast (constructor) |
---|
[4d51835] | 1670 | new_abstract_declarator_tuple // CFA |
---|
| 1671 | | type_specifier |
---|
| 1672 | | type_specifier variable_abstract_declarator |
---|
| 1673 | { $$ = $2->addType( $1 ); } |
---|
| 1674 | ; |
---|
[b87a5ed] | 1675 | |
---|
| 1676 | type_name: // typeof, assertion |
---|
[4d51835] | 1677 | new_abstract_declarator_tuple // CFA |
---|
| 1678 | | new_abstract_function // CFA |
---|
| 1679 | | type_specifier |
---|
| 1680 | | type_specifier abstract_declarator |
---|
| 1681 | { $$ = $2->addType( $1 ); } |
---|
| 1682 | ; |
---|
[51b7345] | 1683 | |
---|
| 1684 | initializer_opt: |
---|
[4d51835] | 1685 | // empty |
---|
| 1686 | { $$ = 0; } |
---|
[2871210] | 1687 | | '=' initializer |
---|
| 1688 | { $$ = $2; } |
---|
[097e2b0] | 1689 | | ATassign initializer |
---|
| 1690 | { $$ = $2; } |
---|
[4d51835] | 1691 | ; |
---|
[51b7345] | 1692 | |
---|
| 1693 | initializer: |
---|
[de62360d] | 1694 | assignment_expression { $$ = new InitializerNode( $1 ); } |
---|
| 1695 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); } |
---|
[4d51835] | 1696 | ; |
---|
[51b7345] | 1697 | |
---|
| 1698 | initializer_list: |
---|
[097e2b0] | 1699 | // empty |
---|
| 1700 | { $$ = 0; } |
---|
| 1701 | | initializer |
---|
[4d51835] | 1702 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
[de62360d] | 1703 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_link( $3 ) ); } |
---|
[4d51835] | 1704 | | initializer_list ',' designation initializer |
---|
[de62360d] | 1705 | { $$ = (InitializerNode *)( $1->set_link( $4->set_designators( $3 ) ) ); } |
---|
[4d51835] | 1706 | ; |
---|
[b87a5ed] | 1707 | |
---|
[de62360d] | 1708 | // There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of |
---|
| 1709 | // '=' to separator the designator from the initializer value, as in: |
---|
[c11e31c] | 1710 | // |
---|
[b87a5ed] | 1711 | // int x[10] = { [1] = 3 }; |
---|
[c11e31c] | 1712 | // |
---|
[de62360d] | 1713 | // The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA |
---|
| 1714 | // changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for |
---|
| 1715 | // field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to |
---|
| 1716 | // shift/reduce conflicts |
---|
[51b7345] | 1717 | |
---|
| 1718 | designation: |
---|
[4d51835] | 1719 | designator_list ':' // C99, CFA uses ":" instead of "=" |
---|
[2871210] | 1720 | | no_attr_identifier_or_type_name ':' // GCC, field name |
---|
| 1721 | { $$ = new VarRefNode( $1 ); } |
---|
[4d51835] | 1722 | ; |
---|
[51b7345] | 1723 | |
---|
[b87a5ed] | 1724 | designator_list: // C99 |
---|
[4d51835] | 1725 | designator |
---|
[2871210] | 1726 | | designator_list designator |
---|
| 1727 | { $$ = (ExpressionNode *)( $1->set_link( $2 )); } |
---|
[de62360d] | 1728 | //| designator_list designator { $$ = new CompositeExprNode( $1, $2 ); } |
---|
[4d51835] | 1729 | ; |
---|
[51b7345] | 1730 | |
---|
| 1731 | designator: |
---|
[02e5ab6] | 1732 | // lexer ambiguity: designator ".0" is floating-point constant or designator for name 0 |
---|
[51b1202] | 1733 | // only ".0" and ".1" allowed => semantic check |
---|
| 1734 | FLOATINGconstant |
---|
| 1735 | { $$ = new DesignatorNode( new VarRefNode( $1 ) ); } |
---|
| 1736 | | '.' no_attr_identifier_or_type_name // C99, field name |
---|
| 1737 | { $$ = new DesignatorNode( new VarRefNode( $2 ) ); } |
---|
[4d51835] | 1738 | | '[' push assignment_expression pop ']' // C99, single array element |
---|
[de62360d] | 1739 | // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple. |
---|
[51b1202] | 1740 | { $$ = new DesignatorNode( $3, true ); } |
---|
[4d51835] | 1741 | | '[' push subrange pop ']' // CFA, multiple array elements |
---|
[51b1202] | 1742 | { $$ = new DesignatorNode( $3, true ); } |
---|
[4d51835] | 1743 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements |
---|
[51b1202] | 1744 | { $$ = new DesignatorNode( new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $3, $5 ), true ); } |
---|
[4d51835] | 1745 | | '.' '[' push field_list pop ']' // CFA, tuple field selector |
---|
[51b1202] | 1746 | { $$ = new DesignatorNode( $4 ); } |
---|
[4d51835] | 1747 | ; |
---|
[51b7345] | 1748 | |
---|
[de62360d] | 1749 | // The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters, |
---|
| 1750 | // rather than an object-oriented type system. This required four groups of extensions: |
---|
[c11e31c] | 1751 | // |
---|
| 1752 | // Overloading: function, data, and operator identifiers may be overloaded. |
---|
| 1753 | // |
---|
[de62360d] | 1754 | // Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object |
---|
| 1755 | // and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide |
---|
| 1756 | // definitions of new types. Type declarations with storage class "extern" provide opaque types. |
---|
[c11e31c] | 1757 | // |
---|
[de62360d] | 1758 | // Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call |
---|
| 1759 | // site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
[c11e31c] | 1760 | // |
---|
| 1761 | // Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
[de62360d] | 1762 | // types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass |
---|
| 1763 | // hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or |
---|
| 1764 | // types provide the operations declared by a specification. Assertions are normally used to declare requirements |
---|
| 1765 | // on type arguments of polymorphic functions. |
---|
[c11e31c] | 1766 | |
---|
[b87a5ed] | 1767 | typegen_declaration_specifier: // CFA |
---|
[4d51835] | 1768 | typegen_type_specifier |
---|
| 1769 | | declaration_qualifier_list typegen_type_specifier |
---|
| 1770 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1771 | | typegen_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1772 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1773 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
| 1774 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1775 | ; |
---|
[b87a5ed] | 1776 | |
---|
| 1777 | typegen_type_specifier: // CFA |
---|
[2871210] | 1778 | typegen_name |
---|
| 1779 | | type_qualifier_list typegen_name |
---|
| 1780 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 1781 | | typegen_type_specifier type_qualifier |
---|
| 1782 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1783 | ; |
---|
[b87a5ed] | 1784 | |
---|
[2871210] | 1785 | typegen_name: // CFA |
---|
| 1786 | TYPEGENname '(' type_name_list ')' |
---|
| 1787 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
| 1788 | ; |
---|
| 1789 | |
---|
[b87a5ed] | 1790 | type_parameter_list: // CFA |
---|
[4d51835] | 1791 | type_parameter assignment_opt |
---|
| 1792 | | type_parameter_list ',' type_parameter assignment_opt |
---|
| 1793 | { $$ = $1->appendList( $3 ); } |
---|
| 1794 | ; |
---|
[b87a5ed] | 1795 | |
---|
| 1796 | type_parameter: // CFA |
---|
[2871210] | 1797 | type_class no_attr_identifier_or_type_name |
---|
| 1798 | { typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); } |
---|
[4d51835] | 1799 | assertion_list_opt |
---|
| 1800 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
| 1801 | | type_specifier identifier_parameter_declarator |
---|
| 1802 | ; |
---|
[b87a5ed] | 1803 | |
---|
| 1804 | type_class: // CFA |
---|
[4d51835] | 1805 | TYPE |
---|
| 1806 | { $$ = DeclarationNode::Type; } |
---|
| 1807 | | DTYPE |
---|
| 1808 | { $$ = DeclarationNode::Ftype; } |
---|
| 1809 | | FTYPE |
---|
| 1810 | { $$ = DeclarationNode::Dtype; } |
---|
| 1811 | ; |
---|
[b87a5ed] | 1812 | |
---|
| 1813 | assertion_list_opt: // CFA |
---|
[4d51835] | 1814 | // empty |
---|
| 1815 | { $$ = 0; } |
---|
| 1816 | | assertion_list_opt assertion |
---|
| 1817 | { $$ = $1 == 0 ? $2 : $1->appendList( $2 ); } |
---|
| 1818 | ; |
---|
[b87a5ed] | 1819 | |
---|
| 1820 | assertion: // CFA |
---|
[2871210] | 1821 | '|' no_attr_identifier_or_type_name '(' type_name_list ')' |
---|
[4d51835] | 1822 | { |
---|
[2871210] | 1823 | typedefTable.openContext( *$2 ); |
---|
[4d51835] | 1824 | $$ = DeclarationNode::newContextUse( $2, $4 ); |
---|
| 1825 | } |
---|
| 1826 | | '|' '{' push context_declaration_list '}' |
---|
| 1827 | { $$ = $4; } |
---|
| 1828 | | '|' '(' push type_parameter_list pop ')' '{' push context_declaration_list '}' '(' type_name_list ')' |
---|
| 1829 | { $$ = 0; } |
---|
| 1830 | ; |
---|
[b87a5ed] | 1831 | |
---|
| 1832 | type_name_list: // CFA |
---|
[4d51835] | 1833 | type_name |
---|
| 1834 | { $$ = new TypeValueNode( $1 ); } |
---|
| 1835 | | assignment_expression |
---|
| 1836 | | type_name_list ',' type_name |
---|
[de62360d] | 1837 | { $$ = (ExpressionNode *)( $1->set_link( new TypeValueNode( $3 ))); } |
---|
[4d51835] | 1838 | | type_name_list ',' assignment_expression |
---|
[de62360d] | 1839 | { $$ = (ExpressionNode *)( $1->set_link( $3 )); } |
---|
[4d51835] | 1840 | ; |
---|
[b87a5ed] | 1841 | |
---|
| 1842 | type_declaring_list: // CFA |
---|
[4d51835] | 1843 | TYPE type_declarator |
---|
| 1844 | { $$ = $2; } |
---|
| 1845 | | storage_class_list TYPE type_declarator |
---|
| 1846 | { $$ = $3->addQualifiers( $1 ); } |
---|
| 1847 | | type_declaring_list ',' type_declarator |
---|
| 1848 | { $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); } |
---|
| 1849 | ; |
---|
[b87a5ed] | 1850 | |
---|
| 1851 | type_declarator: // CFA |
---|
[4d51835] | 1852 | type_declarator_name assertion_list_opt |
---|
| 1853 | { $$ = $1->addAssertions( $2 ); } |
---|
| 1854 | | type_declarator_name assertion_list_opt '=' type_name |
---|
| 1855 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
| 1856 | ; |
---|
[b87a5ed] | 1857 | |
---|
| 1858 | type_declarator_name: // CFA |
---|
[2871210] | 1859 | no_attr_identifier_or_type_name |
---|
[4d51835] | 1860 | { |
---|
[de62360d] | 1861 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TD ); |
---|
[4d51835] | 1862 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
| 1863 | } |
---|
[2871210] | 1864 | | no_01_identifier_or_type_name '(' push type_parameter_list pop ')' |
---|
[4d51835] | 1865 | { |
---|
[de62360d] | 1866 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TG ); |
---|
[4d51835] | 1867 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
| 1868 | } |
---|
| 1869 | ; |
---|
[b87a5ed] | 1870 | |
---|
| 1871 | context_specifier: // CFA |
---|
[2871210] | 1872 | CONTEXT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}' |
---|
[4d51835] | 1873 | { |
---|
[de62360d] | 1874 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4d51835] | 1875 | $$ = DeclarationNode::newContext( $2, $5, 0 ); |
---|
| 1876 | } |
---|
[2871210] | 1877 | | CONTEXT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' |
---|
[4d51835] | 1878 | { |
---|
[de62360d] | 1879 | typedefTable.enterContext( *$2 ); |
---|
[4d51835] | 1880 | typedefTable.enterScope(); |
---|
| 1881 | } |
---|
| 1882 | context_declaration_list '}' |
---|
| 1883 | { |
---|
| 1884 | typedefTable.leaveContext(); |
---|
[de62360d] | 1885 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4d51835] | 1886 | $$ = DeclarationNode::newContext( $2, $5, $10 ); |
---|
| 1887 | } |
---|
| 1888 | ; |
---|
[b87a5ed] | 1889 | |
---|
| 1890 | context_declaration_list: // CFA |
---|
[4d51835] | 1891 | context_declaration |
---|
| 1892 | | context_declaration_list push context_declaration |
---|
| 1893 | { $$ = $1->appendList( $3 ); } |
---|
| 1894 | ; |
---|
[b87a5ed] | 1895 | |
---|
| 1896 | context_declaration: // CFA |
---|
[4d51835] | 1897 | new_context_declaring_list pop ';' |
---|
| 1898 | | context_declaring_list pop ';' |
---|
| 1899 | ; |
---|
[b87a5ed] | 1900 | |
---|
| 1901 | new_context_declaring_list: // CFA |
---|
[4d51835] | 1902 | new_variable_specifier |
---|
| 1903 | { |
---|
| 1904 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1905 | $$ = $1; |
---|
| 1906 | } |
---|
| 1907 | | new_function_specifier |
---|
| 1908 | { |
---|
| 1909 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1910 | $$ = $1; |
---|
| 1911 | } |
---|
[2871210] | 1912 | | new_context_declaring_list pop ',' push identifier_or_type_name |
---|
[4d51835] | 1913 | { |
---|
[de62360d] | 1914 | typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID ); |
---|
[4d51835] | 1915 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1916 | } |
---|
| 1917 | ; |
---|
[b87a5ed] | 1918 | |
---|
| 1919 | context_declaring_list: // CFA |
---|
[4d51835] | 1920 | type_specifier declarator |
---|
| 1921 | { |
---|
| 1922 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1923 | $$ = $2->addType( $1 ); |
---|
| 1924 | } |
---|
| 1925 | | context_declaring_list pop ',' push declarator |
---|
| 1926 | { |
---|
| 1927 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1928 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
| 1929 | } |
---|
| 1930 | ; |
---|
[51b7345] | 1931 | |
---|
[c11e31c] | 1932 | //***************************** EXTERNAL DEFINITIONS ***************************** |
---|
[51b7345] | 1933 | |
---|
| 1934 | translation_unit: |
---|
[4d51835] | 1935 | // empty |
---|
| 1936 | {} // empty input file |
---|
| 1937 | | external_definition_list |
---|
| 1938 | { |
---|
| 1939 | if ( theTree ) { |
---|
| 1940 | theTree->appendList( $1 ); |
---|
| 1941 | } else { |
---|
| 1942 | theTree = $1; |
---|
| 1943 | } |
---|
| 1944 | } |
---|
| 1945 | ; |
---|
[51b7345] | 1946 | |
---|
| 1947 | external_definition_list: |
---|
[4d51835] | 1948 | external_definition |
---|
| 1949 | | external_definition_list push external_definition |
---|
[de62360d] | 1950 | { $$ = ( $1 != NULL ) ? $1->appendList( $3 ) : $3; } |
---|
[4d51835] | 1951 | ; |
---|
[51b7345] | 1952 | |
---|
| 1953 | external_definition_list_opt: |
---|
[4d51835] | 1954 | // empty |
---|
| 1955 | { $$ = 0; } |
---|
| 1956 | | external_definition_list |
---|
| 1957 | ; |
---|
[51b7345] | 1958 | |
---|
| 1959 | external_definition: |
---|
[4d51835] | 1960 | declaration |
---|
| 1961 | | external_function_definition |
---|
| 1962 | | asm_statement // GCC, global assembler statement |
---|
| 1963 | {} |
---|
| 1964 | | EXTERN STRINGliteral |
---|
| 1965 | { |
---|
| 1966 | linkageStack.push( linkage ); |
---|
| 1967 | linkage = LinkageSpec::fromString( *$2 ); |
---|
| 1968 | } |
---|
| 1969 | '{' external_definition_list_opt '}' // C++-style linkage specifier |
---|
| 1970 | { |
---|
| 1971 | linkage = linkageStack.top(); |
---|
| 1972 | linkageStack.pop(); |
---|
| 1973 | $$ = $5; |
---|
| 1974 | } |
---|
| 1975 | | EXTENSION external_definition |
---|
| 1976 | { $$ = $2; } |
---|
| 1977 | ; |
---|
| 1978 | |
---|
| 1979 | external_function_definition: |
---|
| 1980 | function_definition |
---|
[de62360d] | 1981 | // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of |
---|
| 1982 | // code with functions missing a type-specifier on the return type. Parsing is possible because |
---|
| 1983 | // function_definition does not appear in the context of an expression (nested functions would preclude this |
---|
| 1984 | // concession). A function prototype declaration must still have a type_specifier. OBSOLESCENT (see 1) |
---|
[4d51835] | 1985 | | function_declarator compound_statement |
---|
| 1986 | { |
---|
| 1987 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1988 | typedefTable.leaveScope(); |
---|
| 1989 | $$ = $1->addFunctionBody( $2 ); |
---|
| 1990 | } |
---|
| 1991 | | old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1992 | { |
---|
| 1993 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1994 | typedefTable.leaveScope(); |
---|
| 1995 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
| 1996 | } |
---|
| 1997 | ; |
---|
[51b7345] | 1998 | |
---|
| 1999 | function_definition: |
---|
[4d51835] | 2000 | new_function_declaration compound_statement // CFA |
---|
| 2001 | { |
---|
| 2002 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2003 | typedefTable.leaveScope(); |
---|
| 2004 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2005 | } |
---|
| 2006 | | declaration_specifier function_declarator compound_statement |
---|
| 2007 | { |
---|
| 2008 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2009 | typedefTable.leaveScope(); |
---|
| 2010 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
| 2011 | } |
---|
| 2012 | | type_qualifier_list function_declarator compound_statement |
---|
| 2013 | { |
---|
| 2014 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2015 | typedefTable.leaveScope(); |
---|
| 2016 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2017 | } |
---|
| 2018 | | declaration_qualifier_list function_declarator compound_statement |
---|
| 2019 | { |
---|
| 2020 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2021 | typedefTable.leaveScope(); |
---|
| 2022 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2023 | } |
---|
| 2024 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
| 2025 | { |
---|
| 2026 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2027 | typedefTable.leaveScope(); |
---|
| 2028 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2029 | } |
---|
| 2030 | |
---|
| 2031 | // Old-style K&R function definition, OBSOLESCENT (see 4) |
---|
| 2032 | | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2033 | { |
---|
| 2034 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2035 | typedefTable.leaveScope(); |
---|
| 2036 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
| 2037 | } |
---|
| 2038 | | type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2039 | { |
---|
| 2040 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2041 | typedefTable.leaveScope(); |
---|
| 2042 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2043 | } |
---|
| 2044 | |
---|
| 2045 | // Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) |
---|
| 2046 | | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2047 | { |
---|
| 2048 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2049 | typedefTable.leaveScope(); |
---|
| 2050 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2051 | } |
---|
| 2052 | | declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 2053 | { |
---|
| 2054 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2055 | typedefTable.leaveScope(); |
---|
| 2056 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2057 | } |
---|
| 2058 | ; |
---|
[51b7345] | 2059 | |
---|
| 2060 | declarator: |
---|
[4d51835] | 2061 | variable_declarator |
---|
| 2062 | | function_declarator |
---|
[2871210] | 2063 | | type_redeclarator |
---|
[4d51835] | 2064 | ; |
---|
[51b7345] | 2065 | |
---|
| 2066 | subrange: |
---|
[4d51835] | 2067 | constant_expression '~' constant_expression // CFA, integer subrange |
---|
[de62360d] | 2068 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); } |
---|
[4d51835] | 2069 | ; |
---|
[b87a5ed] | 2070 | |
---|
| 2071 | asm_name_opt: // GCC |
---|
[4d51835] | 2072 | // empty |
---|
| 2073 | | ASM '(' string_literal_list ')' attribute_list_opt |
---|
| 2074 | ; |
---|
[b87a5ed] | 2075 | |
---|
| 2076 | attribute_list_opt: // GCC |
---|
[4d51835] | 2077 | // empty |
---|
[1db21619] | 2078 | { $$ = 0; } |
---|
[4d51835] | 2079 | | attribute_list |
---|
| 2080 | ; |
---|
[b87a5ed] | 2081 | |
---|
| 2082 | attribute_list: // GCC |
---|
[4d51835] | 2083 | attribute |
---|
| 2084 | | attribute_list attribute |
---|
[1db21619] | 2085 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 2086 | ; |
---|
[b87a5ed] | 2087 | |
---|
| 2088 | attribute: // GCC |
---|
[4d51835] | 2089 | ATTRIBUTE '(' '(' attribute_parameter_list ')' ')' |
---|
[1db21619] | 2090 | // { $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); } |
---|
| 2091 | { $$ = 0; } |
---|
[4d51835] | 2092 | ; |
---|
[b87a5ed] | 2093 | |
---|
| 2094 | attribute_parameter_list: // GCC |
---|
[4d51835] | 2095 | attrib |
---|
| 2096 | | attribute_parameter_list ',' attrib |
---|
| 2097 | ; |
---|
[b87a5ed] | 2098 | |
---|
| 2099 | attrib: // GCC |
---|
[4d51835] | 2100 | // empty |
---|
| 2101 | | any_word |
---|
| 2102 | | any_word '(' comma_expression_opt ')' |
---|
| 2103 | ; |
---|
[b87a5ed] | 2104 | |
---|
| 2105 | any_word: // GCC |
---|
[2871210] | 2106 | identifier_or_type_name {} |
---|
[4d51835] | 2107 | | storage_class_name {} |
---|
| 2108 | | basic_type_name {} |
---|
| 2109 | | type_qualifier {} |
---|
| 2110 | ; |
---|
[51b7345] | 2111 | |
---|
[c11e31c] | 2112 | // ============================================================================ |
---|
[de62360d] | 2113 | // The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary |
---|
| 2114 | // because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as |
---|
| 2115 | // in: |
---|
[c11e31c] | 2116 | // |
---|
[b87a5ed] | 2117 | // int (*f())[10] { ... }; |
---|
| 2118 | // ... (*f())[3] += 1; // definition mimics usage |
---|
[c11e31c] | 2119 | // |
---|
[de62360d] | 2120 | // Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of |
---|
| 2121 | // the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context. |
---|
[c11e31c] | 2122 | // ============================================================================ |
---|
| 2123 | |
---|
| 2124 | // ---------------------------------------------------------------------------- |
---|
[de62360d] | 2125 | // The set of valid declarators before a compound statement for defining a function is less than the set of declarators |
---|
| 2126 | // to define a variable or function prototype, e.g.: |
---|
[c11e31c] | 2127 | // |
---|
[b87a5ed] | 2128 | // valid declaration invalid definition |
---|
| 2129 | // ----------------- ------------------ |
---|
[4d51835] | 2130 | // int f; int f {} |
---|
| 2131 | // int *f; int *f {} |
---|
[b87a5ed] | 2132 | // int f[10]; int f[10] {} |
---|
[4d51835] | 2133 | // int (*f)(int); int (*f)(int) {} |
---|
[c11e31c] | 2134 | // |
---|
[de62360d] | 2135 | // To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence |
---|
| 2136 | // variable_declarator and function_declarator. |
---|
[c11e31c] | 2137 | // ---------------------------------------------------------------------------- |
---|
| 2138 | |
---|
[de62360d] | 2139 | // This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes |
---|
| 2140 | // declaring an array of functions versus a pointer to an array of functions. |
---|
[51b7345] | 2141 | |
---|
| 2142 | variable_declarator: |
---|
[4d51835] | 2143 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2144 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2145 | | variable_ptr |
---|
| 2146 | | variable_array attribute_list_opt |
---|
[1db21619] | 2147 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2148 | | variable_function attribute_list_opt |
---|
[1db21619] | 2149 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2150 | ; |
---|
[51b7345] | 2151 | |
---|
| 2152 | paren_identifier: |
---|
[4d51835] | 2153 | identifier |
---|
| 2154 | { |
---|
[de62360d] | 2155 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2156 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2157 | } |
---|
| 2158 | | '(' paren_identifier ')' // redundant parenthesis |
---|
| 2159 | { $$ = $2; } |
---|
| 2160 | ; |
---|
[51b7345] | 2161 | |
---|
| 2162 | variable_ptr: |
---|
[4d51835] | 2163 | '*' variable_declarator |
---|
| 2164 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2165 | | '*' type_qualifier_list variable_declarator |
---|
| 2166 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2167 | | '(' variable_ptr ')' |
---|
| 2168 | { $$ = $2; } |
---|
| 2169 | ; |
---|
[51b7345] | 2170 | |
---|
| 2171 | variable_array: |
---|
[4d51835] | 2172 | paren_identifier array_dimension |
---|
| 2173 | { $$ = $1->addArray( $2 ); } |
---|
| 2174 | | '(' variable_ptr ')' array_dimension |
---|
| 2175 | { $$ = $2->addArray( $4 ); } |
---|
| 2176 | | '(' variable_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2177 | { $$ = $2->addArray( $4 ); } |
---|
| 2178 | | '(' variable_array ')' // redundant parenthesis |
---|
| 2179 | { $$ = $2; } |
---|
| 2180 | ; |
---|
[51b7345] | 2181 | |
---|
| 2182 | variable_function: |
---|
[4d51835] | 2183 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2184 | { $$ = $2->addParamList( $6 ); } |
---|
| 2185 | | '(' variable_function ')' // redundant parenthesis |
---|
| 2186 | { $$ = $2; } |
---|
| 2187 | ; |
---|
[51b7345] | 2188 | |
---|
[de62360d] | 2189 | // This pattern parses a function declarator that is not redefining a typedef name. Because functions cannot be nested, |
---|
| 2190 | // there is no context where a function definition can redefine a typedef name. To allow nested functions requires |
---|
[2871210] | 2191 | // further separation of variable and function declarators in type_redeclarator. The pattern precludes returning |
---|
[de62360d] | 2192 | // arrays and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2193 | |
---|
| 2194 | function_declarator: |
---|
[4d51835] | 2195 | function_no_ptr attribute_list_opt |
---|
[1db21619] | 2196 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2197 | | function_ptr |
---|
| 2198 | | function_array attribute_list_opt |
---|
[1db21619] | 2199 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2200 | ; |
---|
[51b7345] | 2201 | |
---|
| 2202 | function_no_ptr: |
---|
[4d51835] | 2203 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2204 | { $$ = $1->addParamList( $4 ); } |
---|
| 2205 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2206 | { $$ = $2->addParamList( $6 ); } |
---|
| 2207 | | '(' function_no_ptr ')' // redundant parenthesis |
---|
| 2208 | { $$ = $2; } |
---|
| 2209 | ; |
---|
[51b7345] | 2210 | |
---|
| 2211 | function_ptr: |
---|
[4d51835] | 2212 | '*' function_declarator |
---|
| 2213 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2214 | | '*' type_qualifier_list function_declarator |
---|
| 2215 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2216 | | '(' function_ptr ')' |
---|
| 2217 | { $$ = $2; } |
---|
| 2218 | ; |
---|
[51b7345] | 2219 | |
---|
| 2220 | function_array: |
---|
[4d51835] | 2221 | '(' function_ptr ')' array_dimension |
---|
| 2222 | { $$ = $2->addArray( $4 ); } |
---|
| 2223 | | '(' function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2224 | { $$ = $2->addArray( $4 ); } |
---|
| 2225 | | '(' function_array ')' // redundant parenthesis |
---|
| 2226 | { $$ = $2; } |
---|
| 2227 | ; |
---|
[51b7345] | 2228 | |
---|
[de62360d] | 2229 | // This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a typedef name |
---|
| 2230 | // (see function_declarator for additional comments). The pattern precludes returning arrays and functions versus |
---|
| 2231 | // pointers to arrays and functions. |
---|
[51b7345] | 2232 | |
---|
| 2233 | old_function_declarator: |
---|
[4d51835] | 2234 | old_function_no_ptr |
---|
| 2235 | | old_function_ptr |
---|
| 2236 | | old_function_array |
---|
| 2237 | ; |
---|
[51b7345] | 2238 | |
---|
| 2239 | old_function_no_ptr: |
---|
[4d51835] | 2240 | paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter |
---|
| 2241 | { $$ = $1->addIdList( $3 ); } |
---|
| 2242 | | '(' old_function_ptr ')' '(' identifier_list ')' |
---|
| 2243 | { $$ = $2->addIdList( $5 ); } |
---|
| 2244 | | '(' old_function_no_ptr ')' // redundant parenthesis |
---|
| 2245 | { $$ = $2; } |
---|
| 2246 | ; |
---|
[51b7345] | 2247 | |
---|
| 2248 | old_function_ptr: |
---|
[4d51835] | 2249 | '*' old_function_declarator |
---|
| 2250 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2251 | | '*' type_qualifier_list old_function_declarator |
---|
| 2252 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2253 | | '(' old_function_ptr ')' |
---|
| 2254 | { $$ = $2; } |
---|
| 2255 | ; |
---|
[51b7345] | 2256 | |
---|
| 2257 | old_function_array: |
---|
[4d51835] | 2258 | '(' old_function_ptr ')' array_dimension |
---|
| 2259 | { $$ = $2->addArray( $4 ); } |
---|
| 2260 | | '(' old_function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2261 | { $$ = $2->addArray( $4 ); } |
---|
| 2262 | | '(' old_function_array ')' // redundant parenthesis |
---|
| 2263 | { $$ = $2; } |
---|
| 2264 | ; |
---|
[51b7345] | 2265 | |
---|
[2871210] | 2266 | // This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.: |
---|
[c11e31c] | 2267 | // |
---|
[b87a5ed] | 2268 | // typedef int foo; |
---|
| 2269 | // { |
---|
| 2270 | // int foo; // redefine typedef name in new scope |
---|
| 2271 | // } |
---|
[c11e31c] | 2272 | // |
---|
[de62360d] | 2273 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2274 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2275 | |
---|
[2871210] | 2276 | type_redeclarator: |
---|
| 2277 | paren_type attribute_list_opt |
---|
[1db21619] | 2278 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2279 | | type_ptr |
---|
| 2280 | | type_array attribute_list_opt |
---|
[1db21619] | 2281 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2282 | | type_function attribute_list_opt |
---|
[1db21619] | 2283 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2284 | ; |
---|
[51b7345] | 2285 | |
---|
[2871210] | 2286 | paren_type: |
---|
| 2287 | typedef |
---|
| 2288 | | '(' paren_type ')' |
---|
[4d51835] | 2289 | { $$ = $2; } |
---|
| 2290 | ; |
---|
[51b7345] | 2291 | |
---|
[2871210] | 2292 | type_ptr: |
---|
| 2293 | '*' type_redeclarator |
---|
[4d51835] | 2294 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[2871210] | 2295 | | '*' type_qualifier_list type_redeclarator |
---|
[4d51835] | 2296 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2297 | | '(' type_ptr ')' |
---|
[4d51835] | 2298 | { $$ = $2; } |
---|
| 2299 | ; |
---|
[51b7345] | 2300 | |
---|
[2871210] | 2301 | type_array: |
---|
| 2302 | paren_type array_dimension |
---|
[4d51835] | 2303 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2304 | | '(' type_ptr ')' array_dimension |
---|
[4d51835] | 2305 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2306 | | '(' type_array ')' multi_array_dimension // redundant parenthesis |
---|
[4d51835] | 2307 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2308 | | '(' type_array ')' // redundant parenthesis |
---|
[4d51835] | 2309 | { $$ = $2; } |
---|
| 2310 | ; |
---|
[51b7345] | 2311 | |
---|
[2871210] | 2312 | type_function: |
---|
| 2313 | paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2314 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2315 | | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2316 | { $$ = $2->addParamList( $6 ); } |
---|
[2871210] | 2317 | | '(' type_function ')' // redundant parenthesis |
---|
[4d51835] | 2318 | { $$ = $2; } |
---|
| 2319 | ; |
---|
[51b7345] | 2320 | |
---|
[de62360d] | 2321 | // This pattern parses a declaration for a parameter variable or function prototype that is not redefining a typedef |
---|
| 2322 | // name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes declaring an |
---|
| 2323 | // array of functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to |
---|
| 2324 | // arrays and functions. |
---|
[51b7345] | 2325 | |
---|
| 2326 | identifier_parameter_declarator: |
---|
[4d51835] | 2327 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2328 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2329 | | identifier_parameter_ptr |
---|
| 2330 | | identifier_parameter_array attribute_list_opt |
---|
[1db21619] | 2331 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2332 | | identifier_parameter_function attribute_list_opt |
---|
[1db21619] | 2333 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2334 | ; |
---|
[51b7345] | 2335 | |
---|
| 2336 | identifier_parameter_ptr: |
---|
[4d51835] | 2337 | '*' identifier_parameter_declarator |
---|
| 2338 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2339 | | '*' type_qualifier_list identifier_parameter_declarator |
---|
| 2340 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2341 | | '(' identifier_parameter_ptr ')' |
---|
| 2342 | { $$ = $2; } |
---|
| 2343 | ; |
---|
[51b7345] | 2344 | |
---|
| 2345 | identifier_parameter_array: |
---|
[4d51835] | 2346 | paren_identifier array_parameter_dimension |
---|
| 2347 | { $$ = $1->addArray( $2 ); } |
---|
| 2348 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
| 2349 | { $$ = $2->addArray( $4 ); } |
---|
| 2350 | | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2351 | { $$ = $2->addArray( $4 ); } |
---|
| 2352 | | '(' identifier_parameter_array ')' // redundant parenthesis |
---|
| 2353 | { $$ = $2; } |
---|
| 2354 | ; |
---|
[51b7345] | 2355 | |
---|
| 2356 | identifier_parameter_function: |
---|
[4d51835] | 2357 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2358 | { $$ = $1->addParamList( $4 ); } |
---|
| 2359 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2360 | { $$ = $2->addParamList( $6 ); } |
---|
| 2361 | | '(' identifier_parameter_function ')' // redundant parenthesis |
---|
| 2362 | { $$ = $2; } |
---|
| 2363 | ; |
---|
[b87a5ed] | 2364 | |
---|
[de62360d] | 2365 | // This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name, |
---|
| 2366 | // e.g.: |
---|
[c11e31c] | 2367 | // |
---|
[b87a5ed] | 2368 | // typedef int foo; |
---|
| 2369 | // int f( int foo ); // redefine typedef name in new scope |
---|
[c11e31c] | 2370 | // |
---|
[de62360d] | 2371 | // and allows the C99 array options, which can only appear in a parameter list. In addition, the pattern handles the |
---|
| 2372 | // special meaning of parenthesis around a typedef name: |
---|
[c11e31c] | 2373 | // |
---|
[b87a5ed] | 2374 | // ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
| 2375 | // parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
| 2376 | // not as redundant parentheses around the identifier." |
---|
[c11e31c] | 2377 | // |
---|
| 2378 | // which precludes the following cases: |
---|
| 2379 | // |
---|
[b87a5ed] | 2380 | // typedef float T; |
---|
[4d51835] | 2381 | // int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
[b87a5ed] | 2382 | // int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
| 2383 | // int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
| 2384 | // int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
[c11e31c] | 2385 | // |
---|
[de62360d] | 2386 | // In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and |
---|
| 2387 | // not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of |
---|
| 2388 | // functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and |
---|
| 2389 | // functions. |
---|
[51b7345] | 2390 | |
---|
[2871210] | 2391 | type_parameter_redeclarator: |
---|
[4d51835] | 2392 | typedef attribute_list_opt |
---|
[1db21619] | 2393 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2394 | | type_parameter_ptr |
---|
| 2395 | | type_parameter_array attribute_list_opt |
---|
[1db21619] | 2396 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2397 | | type_parameter_function attribute_list_opt |
---|
[1db21619] | 2398 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2399 | ; |
---|
[51b7345] | 2400 | |
---|
| 2401 | typedef: |
---|
[4d51835] | 2402 | TYPEDEFname |
---|
| 2403 | { |
---|
[de62360d] | 2404 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2405 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2406 | } |
---|
[2871210] | 2407 | | TYPEGENname |
---|
| 2408 | { |
---|
| 2409 | typedefTable.setNextIdentifier( *$1 ); |
---|
| 2410 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2411 | } |
---|
[4d51835] | 2412 | ; |
---|
[51b7345] | 2413 | |
---|
[2871210] | 2414 | type_parameter_ptr: |
---|
| 2415 | '*' type_parameter_redeclarator |
---|
[4d51835] | 2416 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[2871210] | 2417 | | '*' type_qualifier_list type_parameter_redeclarator |
---|
[4d51835] | 2418 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[2871210] | 2419 | | '(' type_parameter_ptr ')' |
---|
[4d51835] | 2420 | { $$ = $2; } |
---|
| 2421 | ; |
---|
[51b7345] | 2422 | |
---|
[2871210] | 2423 | type_parameter_array: |
---|
[4d51835] | 2424 | typedef array_parameter_dimension |
---|
| 2425 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2426 | | '(' type_parameter_ptr ')' array_parameter_dimension |
---|
[4d51835] | 2427 | { $$ = $2->addArray( $4 ); } |
---|
| 2428 | ; |
---|
[51b7345] | 2429 | |
---|
[2871210] | 2430 | type_parameter_function: |
---|
[4d51835] | 2431 | typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2432 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2433 | | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2434 | { $$ = $2->addParamList( $6 ); } |
---|
| 2435 | ; |
---|
[b87a5ed] | 2436 | |
---|
[de62360d] | 2437 | // This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to |
---|
| 2438 | // which the type applies, e.g.: |
---|
[c11e31c] | 2439 | // |
---|
[b87a5ed] | 2440 | // sizeof( int ); |
---|
| 2441 | // sizeof( int [10] ); |
---|
[c11e31c] | 2442 | // |
---|
[de62360d] | 2443 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2444 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2445 | |
---|
| 2446 | abstract_declarator: |
---|
[4d51835] | 2447 | abstract_ptr |
---|
| 2448 | | abstract_array attribute_list_opt |
---|
[1db21619] | 2449 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2450 | | abstract_function attribute_list_opt |
---|
[1db21619] | 2451 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2452 | ; |
---|
[51b7345] | 2453 | |
---|
| 2454 | abstract_ptr: |
---|
[4d51835] | 2455 | '*' |
---|
| 2456 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2457 | | '*' type_qualifier_list |
---|
| 2458 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2459 | | '*' abstract_declarator |
---|
| 2460 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2461 | | '*' type_qualifier_list abstract_declarator |
---|
| 2462 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2463 | | '(' abstract_ptr ')' |
---|
| 2464 | { $$ = $2; } |
---|
| 2465 | ; |
---|
[51b7345] | 2466 | |
---|
| 2467 | abstract_array: |
---|
[4d51835] | 2468 | array_dimension |
---|
| 2469 | | '(' abstract_ptr ')' array_dimension |
---|
| 2470 | { $$ = $2->addArray( $4 ); } |
---|
| 2471 | | '(' abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2472 | { $$ = $2->addArray( $4 ); } |
---|
| 2473 | | '(' abstract_array ')' // redundant parenthesis |
---|
| 2474 | { $$ = $2; } |
---|
| 2475 | ; |
---|
[51b7345] | 2476 | |
---|
| 2477 | abstract_function: |
---|
[4d51835] | 2478 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2479 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2480 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2481 | { $$ = $2->addParamList( $6 ); } |
---|
| 2482 | | '(' abstract_function ')' // redundant parenthesis |
---|
| 2483 | { $$ = $2; } |
---|
| 2484 | ; |
---|
[51b7345] | 2485 | |
---|
| 2486 | array_dimension: |
---|
[4d51835] | 2487 | // Only the first dimension can be empty. |
---|
[2871210] | 2488 | '[' ']' |
---|
[4d51835] | 2489 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
[2871210] | 2490 | | '[' ']' multi_array_dimension |
---|
| 2491 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); } |
---|
[4d51835] | 2492 | | multi_array_dimension |
---|
| 2493 | ; |
---|
[51b7345] | 2494 | |
---|
| 2495 | multi_array_dimension: |
---|
[4d51835] | 2496 | '[' push assignment_expression pop ']' |
---|
| 2497 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
| 2498 | | '[' push '*' pop ']' // C99 |
---|
| 2499 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
| 2500 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
| 2501 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
| 2502 | | multi_array_dimension '[' push '*' pop ']' // C99 |
---|
| 2503 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
| 2504 | ; |
---|
[51b7345] | 2505 | |
---|
[c11e31c] | 2506 | // This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
| 2507 | // identifier to which the type applies, e.g.: |
---|
| 2508 | // |
---|
[b87a5ed] | 2509 | // int f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2510 | // int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2511 | // |
---|
[de62360d] | 2512 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2513 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2514 | |
---|
| 2515 | abstract_parameter_declarator: |
---|
[4d51835] | 2516 | abstract_parameter_ptr |
---|
| 2517 | | abstract_parameter_array attribute_list_opt |
---|
[1db21619] | 2518 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2519 | | abstract_parameter_function attribute_list_opt |
---|
[1db21619] | 2520 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2521 | ; |
---|
[51b7345] | 2522 | |
---|
| 2523 | abstract_parameter_ptr: |
---|
[4d51835] | 2524 | '*' |
---|
| 2525 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2526 | | '*' type_qualifier_list |
---|
| 2527 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2528 | | '*' abstract_parameter_declarator |
---|
| 2529 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2530 | | '*' type_qualifier_list abstract_parameter_declarator |
---|
| 2531 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2532 | | '(' abstract_parameter_ptr ')' |
---|
| 2533 | { $$ = $2; } |
---|
| 2534 | ; |
---|
[51b7345] | 2535 | |
---|
| 2536 | abstract_parameter_array: |
---|
[4d51835] | 2537 | array_parameter_dimension |
---|
| 2538 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
| 2539 | { $$ = $2->addArray( $4 ); } |
---|
| 2540 | | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2541 | { $$ = $2->addArray( $4 ); } |
---|
| 2542 | | '(' abstract_parameter_array ')' // redundant parenthesis |
---|
| 2543 | { $$ = $2; } |
---|
| 2544 | ; |
---|
[51b7345] | 2545 | |
---|
| 2546 | abstract_parameter_function: |
---|
[4d51835] | 2547 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2548 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2549 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2550 | { $$ = $2->addParamList( $6 ); } |
---|
| 2551 | | '(' abstract_parameter_function ')' // redundant parenthesis |
---|
| 2552 | { $$ = $2; } |
---|
| 2553 | ; |
---|
[51b7345] | 2554 | |
---|
| 2555 | array_parameter_dimension: |
---|
[4d51835] | 2556 | // Only the first dimension can be empty or have qualifiers. |
---|
| 2557 | array_parameter_1st_dimension |
---|
| 2558 | | array_parameter_1st_dimension multi_array_dimension |
---|
| 2559 | { $$ = $1->addArray( $2 ); } |
---|
| 2560 | | multi_array_dimension |
---|
| 2561 | ; |
---|
[51b7345] | 2562 | |
---|
[c11e31c] | 2563 | // The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
| 2564 | // |
---|
[de62360d] | 2565 | // ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in |
---|
| 2566 | // a declaration of a function parameter with an array type, and then only in the outermost array type derivation." |
---|
[51b7345] | 2567 | |
---|
| 2568 | array_parameter_1st_dimension: |
---|
[2871210] | 2569 | '[' ']' |
---|
[4d51835] | 2570 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
| 2571 | // multi_array_dimension handles the '[' '*' ']' case |
---|
| 2572 | | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2573 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2574 | | '[' push type_qualifier_list pop ']' |
---|
| 2575 | { $$ = DeclarationNode::newArray( 0, $3, false ); } |
---|
| 2576 | // multi_array_dimension handles the '[' assignment_expression ']' case |
---|
| 2577 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2578 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2579 | | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']' |
---|
| 2580 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
| 2581 | | '[' push type_qualifier_list STATIC assignment_expression pop ']' |
---|
| 2582 | { $$ = DeclarationNode::newArray( $5, $3, true ); } |
---|
| 2583 | ; |
---|
[b87a5ed] | 2584 | |
---|
[de62360d] | 2585 | // This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type applies, |
---|
| 2586 | // e.g.: |
---|
[c11e31c] | 2587 | // |
---|
[b87a5ed] | 2588 | // sizeof( int ); // abstract variable; no identifier name specified |
---|
[c11e31c] | 2589 | // |
---|
[de62360d] | 2590 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2591 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2592 | |
---|
| 2593 | variable_abstract_declarator: |
---|
[4d51835] | 2594 | variable_abstract_ptr |
---|
| 2595 | | variable_abstract_array attribute_list_opt |
---|
[1db21619] | 2596 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2597 | | variable_abstract_function attribute_list_opt |
---|
[1db21619] | 2598 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2599 | ; |
---|
[51b7345] | 2600 | |
---|
| 2601 | variable_abstract_ptr: |
---|
[4d51835] | 2602 | '*' |
---|
| 2603 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2604 | | '*' type_qualifier_list |
---|
| 2605 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2606 | | '*' variable_abstract_declarator |
---|
| 2607 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2608 | | '*' type_qualifier_list variable_abstract_declarator |
---|
| 2609 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2610 | | '(' variable_abstract_ptr ')' |
---|
| 2611 | { $$ = $2; } |
---|
| 2612 | ; |
---|
[51b7345] | 2613 | |
---|
| 2614 | variable_abstract_array: |
---|
[4d51835] | 2615 | array_dimension |
---|
| 2616 | | '(' variable_abstract_ptr ')' array_dimension |
---|
| 2617 | { $$ = $2->addArray( $4 ); } |
---|
| 2618 | | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2619 | { $$ = $2->addArray( $4 ); } |
---|
| 2620 | | '(' variable_abstract_array ')' // redundant parenthesis |
---|
| 2621 | { $$ = $2; } |
---|
| 2622 | ; |
---|
[51b7345] | 2623 | |
---|
| 2624 | variable_abstract_function: |
---|
[4d51835] | 2625 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2626 | { $$ = $2->addParamList( $6 ); } |
---|
| 2627 | | '(' variable_abstract_function ')' // redundant parenthesis |
---|
| 2628 | { $$ = $2; } |
---|
| 2629 | ; |
---|
[b87a5ed] | 2630 | |
---|
[de62360d] | 2631 | // This pattern parses a new-style declaration for a parameter variable or function prototype that is either an |
---|
| 2632 | // identifier or typedef name and allows the C99 array options, which can only appear in a parameter list. |
---|
[b87a5ed] | 2633 | |
---|
| 2634 | new_identifier_parameter_declarator_tuple: // CFA |
---|
[4d51835] | 2635 | new_identifier_parameter_declarator_no_tuple |
---|
| 2636 | | new_abstract_tuple |
---|
| 2637 | | type_qualifier_list new_abstract_tuple |
---|
| 2638 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2639 | ; |
---|
[b87a5ed] | 2640 | |
---|
| 2641 | new_identifier_parameter_declarator_no_tuple: // CFA |
---|
[4d51835] | 2642 | new_identifier_parameter_ptr |
---|
| 2643 | | new_identifier_parameter_array |
---|
| 2644 | ; |
---|
[b87a5ed] | 2645 | |
---|
| 2646 | new_identifier_parameter_ptr: // CFA |
---|
[4d51835] | 2647 | '*' type_specifier |
---|
| 2648 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2649 | | type_qualifier_list '*' type_specifier |
---|
| 2650 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2651 | | '*' new_abstract_function |
---|
| 2652 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2653 | | type_qualifier_list '*' new_abstract_function |
---|
| 2654 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2655 | | '*' new_identifier_parameter_declarator_tuple |
---|
| 2656 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2657 | | type_qualifier_list '*' new_identifier_parameter_declarator_tuple |
---|
| 2658 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2659 | ; |
---|
[b87a5ed] | 2660 | |
---|
| 2661 | new_identifier_parameter_array: // CFA |
---|
[de62360d] | 2662 | // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to |
---|
| 2663 | // shift/reduce conflict with new-style empty (void) function return type. |
---|
[2871210] | 2664 | '[' ']' type_specifier |
---|
| 2665 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2666 | | new_array_parameter_1st_dimension type_specifier |
---|
| 2667 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2668 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2669 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2670 | | new_array_parameter_1st_dimension multi_array_dimension type_specifier |
---|
| 2671 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2672 | | multi_array_dimension type_specifier |
---|
| 2673 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2674 | | '[' ']' new_identifier_parameter_ptr |
---|
| 2675 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2676 | | new_array_parameter_1st_dimension new_identifier_parameter_ptr |
---|
| 2677 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2678 | | '[' ']' multi_array_dimension new_identifier_parameter_ptr |
---|
| 2679 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2680 | | new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr |
---|
| 2681 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2682 | | multi_array_dimension new_identifier_parameter_ptr |
---|
| 2683 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2684 | ; |
---|
[51b7345] | 2685 | |
---|
| 2686 | new_array_parameter_1st_dimension: |
---|
[4d51835] | 2687 | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2688 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2689 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2690 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2691 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
| 2692 | // declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
| 2693 | // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot |
---|
| 2694 | // appear in this context. |
---|
| 2695 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
| 2696 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
| 2697 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
| 2698 | ; |
---|
[b87a5ed] | 2699 | |
---|
[de62360d] | 2700 | // This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no |
---|
| 2701 | // identifier to which the type applies, e.g.: |
---|
[c11e31c] | 2702 | // |
---|
[b87a5ed] | 2703 | // [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2704 | // [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2705 | // |
---|
| 2706 | // These rules need LR(3): |
---|
| 2707 | // |
---|
[2871210] | 2708 | // new_abstract_tuple identifier_or_type_name |
---|
| 2709 | // '[' new_parameter_list ']' identifier_or_type_name '(' new_parameter_type_list_opt ')' |
---|
[c11e31c] | 2710 | // |
---|
| 2711 | // since a function return type can be syntactically identical to a tuple type: |
---|
| 2712 | // |
---|
[b87a5ed] | 2713 | // [int, int] t; |
---|
| 2714 | // [int, int] f( int ); |
---|
[c11e31c] | 2715 | // |
---|
[2871210] | 2716 | // Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce |
---|
[de62360d] | 2717 | // new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary |
---|
| 2718 | // lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and tuple declarations are |
---|
| 2719 | // duplicated when appearing with new_function_specifier. |
---|
[b87a5ed] | 2720 | |
---|
| 2721 | new_abstract_declarator_tuple: // CFA |
---|
[4d51835] | 2722 | new_abstract_tuple |
---|
| 2723 | | type_qualifier_list new_abstract_tuple |
---|
| 2724 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2725 | | new_abstract_declarator_no_tuple |
---|
| 2726 | ; |
---|
[b87a5ed] | 2727 | |
---|
| 2728 | new_abstract_declarator_no_tuple: // CFA |
---|
[4d51835] | 2729 | new_abstract_ptr |
---|
| 2730 | | new_abstract_array |
---|
| 2731 | ; |
---|
[b87a5ed] | 2732 | |
---|
| 2733 | new_abstract_ptr: // CFA |
---|
[4d51835] | 2734 | '*' type_specifier |
---|
| 2735 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2736 | | type_qualifier_list '*' type_specifier |
---|
| 2737 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2738 | | '*' new_abstract_function |
---|
| 2739 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2740 | | type_qualifier_list '*' new_abstract_function |
---|
| 2741 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2742 | | '*' new_abstract_declarator_tuple |
---|
| 2743 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2744 | | type_qualifier_list '*' new_abstract_declarator_tuple |
---|
| 2745 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2746 | ; |
---|
[b87a5ed] | 2747 | |
---|
| 2748 | new_abstract_array: // CFA |
---|
[de62360d] | 2749 | // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with |
---|
| 2750 | // empty (void) function return type. |
---|
[2871210] | 2751 | '[' ']' type_specifier |
---|
| 2752 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2753 | | '[' ']' multi_array_dimension type_specifier |
---|
| 2754 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2755 | | multi_array_dimension type_specifier |
---|
| 2756 | { $$ = $2->addNewArray( $1 ); } |
---|
[2871210] | 2757 | | '[' ']' new_abstract_ptr |
---|
| 2758 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2759 | | '[' ']' multi_array_dimension new_abstract_ptr |
---|
| 2760 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[4d51835] | 2761 | | multi_array_dimension new_abstract_ptr |
---|
| 2762 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2763 | ; |
---|
[b87a5ed] | 2764 | |
---|
| 2765 | new_abstract_tuple: // CFA |
---|
[4d51835] | 2766 | '[' push new_abstract_parameter_list pop ']' |
---|
| 2767 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 2768 | ; |
---|
[b87a5ed] | 2769 | |
---|
| 2770 | new_abstract_function: // CFA |
---|
[2871210] | 2771 | '[' ']' '(' new_parameter_type_list_opt ')' |
---|
| 2772 | { $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $4, 0 ); } |
---|
[4d51835] | 2773 | | new_abstract_tuple '(' push new_parameter_type_list_opt pop ')' |
---|
| 2774 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2775 | | new_function_return '(' push new_parameter_type_list_opt pop ')' |
---|
| 2776 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2777 | ; |
---|
[b87a5ed] | 2778 | |
---|
[de62360d] | 2779 | // 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in |
---|
| 2780 | // each declaration, and in the specifier-qualifier list in each structure declaration and type name." |
---|
[c11e31c] | 2781 | // |
---|
[de62360d] | 2782 | // 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of |
---|
| 2783 | // the declaration specifiers in a declaration is an obsolescent feature." |
---|
[c11e31c] | 2784 | // |
---|
| 2785 | // 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
---|
| 2786 | // prototype-format parameter type declarators) is an obsolescent feature." |
---|
| 2787 | // |
---|
[de62360d] | 2788 | // 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and |
---|
| 2789 | // declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature. |
---|
[51b7345] | 2790 | |
---|
[c11e31c] | 2791 | //************************* MISCELLANEOUS ******************************** |
---|
[51b7345] | 2792 | |
---|
[b87a5ed] | 2793 | comma_opt: // redundant comma |
---|
[4d51835] | 2794 | // empty |
---|
| 2795 | | ',' |
---|
| 2796 | ; |
---|
[51b7345] | 2797 | |
---|
| 2798 | assignment_opt: |
---|
[4d51835] | 2799 | // empty |
---|
| 2800 | { $$ = 0; } |
---|
| 2801 | | '=' assignment_expression |
---|
| 2802 | { $$ = $2; } |
---|
| 2803 | ; |
---|
[51b7345] | 2804 | |
---|
| 2805 | %% |
---|
[c11e31c] | 2806 | // ----end of grammar---- |
---|
[51b7345] | 2807 | |
---|
[5f2f2d7] | 2808 | void yyerror( const char * ) { |
---|
| 2809 | std::cout << "Error "; |
---|
[b87a5ed] | 2810 | if ( yyfilename ) { |
---|
[5f2f2d7] | 2811 | std::cout << "in file " << yyfilename << " "; |
---|
| 2812 | } // if |
---|
[b1d6dd5] | 2813 | std::cout << "at line " << yylineno << " reading token \"" << (yytext[0] == '\0' ? "EOF" : yytext) << "\"" << std::endl; |
---|
[51b7345] | 2814 | } |
---|
| 2815 | |
---|
[c11e31c] | 2816 | // Local Variables: // |
---|
[b87a5ed] | 2817 | // mode: c++ // |
---|
[de62360d] | 2818 | // tab-width: 4 // |
---|
[c11e31c] | 2819 | // compile-command: "make install" // |
---|
| 2820 | // End: // |
---|