[51b7345] | 1 | /* -*- Mode: C -*- |
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| 2 | * |
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| 3 | * CForall Grammar Version 1.0, Copyright (C) Peter A. Buhr 2001 -- Permission is granted to copy this |
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| 4 | * grammar and to use it within software systems. THIS GRAMMAR IS PROVIDED "AS IS" AND WITHOUT |
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| 5 | * ANY EXPRESS OR IMPLIED WARRANTIES. |
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| 6 | * |
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| 7 | * cfa.y -- |
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| 8 | * |
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| 9 | * Author : Peter A. Buhr |
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| 10 | * Created On : Sat Sep 1 20:22:55 2001 |
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| 11 | * Last Modified By : Peter A. Buhr |
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[bdd516a] | 12 | * Last Modified On : Wed Apr 15 15:11:16 2015 |
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| 13 | * Update Count : 913 |
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[51b7345] | 14 | */ |
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| 15 | |
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[6c3744e] | 16 | /* This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on |
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| 17 | the C grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While |
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| 18 | parts have been copied, important changes have been made in all sections; these changes are sufficient to |
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[51b7345] | 19 | constitute a new grammar. In particular, this grammar attempts to be more syntactically precise, i.e., it |
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| 20 | parses less incorrect language syntax that must be subsequently rejected by semantic checks. Nevertheless, |
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[6c3744e] | 21 | there are still several semantic checks required and many are noted in the grammar. Finally, the grammar is |
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| 22 | extended with GCC and CFA language extensions. */ |
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[51b7345] | 23 | |
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| 24 | /* Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got |
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| 25 | stuck with the grammar. */ |
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| 26 | |
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[6c3744e] | 27 | /* The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for: |
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[51b7345] | 28 | |
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| 29 | 1. designation with '=' (use ':' instead) |
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| 30 | |
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[6c3744e] | 31 | Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar |
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[51b7345] | 32 | also has two levels of extensions. The first extensions cover most of the GCC C extensions, except for: |
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| 33 | |
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| 34 | 1. nested functions |
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| 35 | 2. generalized lvalues |
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| 36 | 3. designation with and without '=' (use ':' instead) |
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| 37 | 4. attributes not allowed in parenthesis of declarator |
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| 38 | |
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| 39 | All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for |
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| 40 | Cforall (CFA), which fixes several of C's outstanding problems and extends C with many modern language |
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| 41 | concepts. All of the syntactic extensions for CFA C are marked with the comment "CFA". As noted above, |
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[6c3744e] | 42 | there is one unreconcileable parsing problem between C99 and CFA with respect to designators; this is |
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[51b7345] | 43 | discussed in detail before the "designation" grammar rule. */ |
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| 44 | |
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| 45 | %{ |
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| 46 | #define YYDEBUG_LEXER_TEXT (yylval) /* lexer loads this up each time */ |
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| 47 | #define YYDEBUG 1 /* get the pretty debugging code to compile*/ |
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| 48 | |
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| 49 | #undef __GNUC_MINOR__ |
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| 50 | |
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| 51 | #include <cstdio> |
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| 52 | #include <stack> |
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| 53 | #include "TypedefTable.h" |
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| 54 | #include "lex.h" |
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| 55 | #include "ParseNode.h" |
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| 56 | #include "LinkageSpec.h" |
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| 57 | |
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| 58 | DeclarationNode *theTree = 0; /* the resulting parse tree */ |
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| 59 | LinkageSpec::Type linkage = LinkageSpec::Cforall; |
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| 60 | std::stack< LinkageSpec::Type > linkageStack; |
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| 61 | TypedefTable typedefTable; |
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| 62 | %} |
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| 63 | |
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| 64 | /************************* TERMINAL TOKENS ********************************/ |
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| 65 | |
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| 66 | /* keywords */ |
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| 67 | %token TYPEDEF |
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| 68 | %token AUTO EXTERN REGISTER STATIC |
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[6c3744e] | 69 | %token INLINE /* C99 */ |
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| 70 | %token FORTRAN /* C99, extension ISO/IEC 9899:1999 Section J.5.9(1) */ |
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[51b7345] | 71 | %token CONST VOLATILE |
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[6c3744e] | 72 | %token RESTRICT /* C99 */ |
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[51b7345] | 73 | %token FORALL LVALUE /* CFA */ |
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| 74 | %token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED |
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[6c3744e] | 75 | %token BOOL COMPLEX IMAGINARY /* C99 */ |
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[51b7345] | 76 | %token TYPEOF LABEL /* GCC */ |
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| 77 | %token ENUM STRUCT UNION |
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| 78 | %token TYPE FTYPE DTYPE CONTEXT /* CFA */ |
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| 79 | %token SIZEOF |
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[6c3744e] | 80 | %token ATTRIBUTE EXTENSION /* GCC */ |
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[51b7345] | 81 | %token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN |
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| 82 | %token CHOOSE FALLTHRU TRY CATCH FINALLY THROW /* CFA */ |
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[6c3744e] | 83 | %token ASM /* C99, extension ISO/IEC 9899:1999 Section J.5.10(1) */ |
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| 84 | %token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL /* C11 */ |
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[51b7345] | 85 | |
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| 86 | /* names and constants: lexer differentiates between identifier and typedef names */ |
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[8c17ab0] | 87 | %token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname |
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[51b7345] | 88 | %token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname |
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| 89 | %token<tok> INTEGERconstant FLOATINGconstant CHARACTERconstant STRINGliteral |
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| 90 | %token<tok> ZERO ONE /* CFA */ |
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| 91 | |
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| 92 | /* multi-character operators */ |
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| 93 | %token ARROW /* -> */ |
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| 94 | %token ICR DECR /* ++ -- */ |
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| 95 | %token LS RS /* << >> */ |
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| 96 | %token LE GE EQ NE /* <= >= == != */ |
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| 97 | %token ANDAND OROR /* && || */ |
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| 98 | %token ELLIPSIS /* ... */ |
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| 99 | |
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| 100 | %token MULTassign DIVassign MODassign /* *= /= %= */ |
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| 101 | %token PLUSassign MINUSassign /* += -= */ |
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| 102 | %token LSassign RSassign /* <<= >>= */ |
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| 103 | %token ANDassign ERassign ORassign /* &= ^= |= */ |
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| 104 | |
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| 105 | /* Types declaration */ |
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| 106 | %union |
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| 107 | { |
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| 108 | Token tok; |
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| 109 | ParseNode *pn; |
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| 110 | ExpressionNode *en; |
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| 111 | DeclarationNode *decl; |
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| 112 | DeclarationNode::TyCon aggKey; |
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| 113 | DeclarationNode::TypeClass tclass; |
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| 114 | StatementNode *sn; |
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| 115 | ConstantNode *constant; |
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| 116 | InitializerNode *in; |
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| 117 | } |
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| 118 | |
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| 119 | %type<tok> zero_one identifier no_attr_identifier no_01_identifier |
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| 120 | %type<tok> identifier_or_typedef_name no_attr_identifier_or_typedef_name no_01_identifier_or_typedef_name |
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| 121 | %type<constant> string_literal_list |
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| 122 | |
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| 123 | /* expressions */ |
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| 124 | %type<constant> constant |
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| 125 | %type<en> tuple tuple_expression_list |
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| 126 | %type<en> unary_operator assignment_operator |
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| 127 | %type<en> primary_expression postfix_expression unary_expression |
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| 128 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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| 129 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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| 130 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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| 131 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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| 132 | %type<en> comma_expression comma_expression_opt |
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| 133 | %type<en> argument_expression_list argument_expression for_control_expression assignment_opt |
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| 134 | %type<en> subrange |
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| 135 | |
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| 136 | /* statements */ |
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| 137 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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| 138 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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| 139 | %type<sn> fall_through_opt fall_through |
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| 140 | %type<sn> statement statement_list |
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| 141 | %type<sn> block_item_list block_item |
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| 142 | %type<sn> case_clause |
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| 143 | %type<en> case_value case_value_list |
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| 144 | %type<sn> case_label case_label_list |
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| 145 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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| 146 | %type<pn> handler_list handler_clause finally_clause |
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| 147 | |
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| 148 | /* declarations */ |
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| 149 | %type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array |
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| 150 | %type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function |
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| 151 | %type<decl> abstract_parameter_ptr abstract_ptr |
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| 152 | |
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| 153 | %type<aggKey> aggregate_key |
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| 154 | %type<decl> aggregate_name |
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| 155 | |
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| 156 | %type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension |
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| 157 | |
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| 158 | %type<decl> assertion assertion_list_opt |
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| 159 | |
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| 160 | %type<en> bit_subrange_size_opt bit_subrange_size |
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| 161 | |
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| 162 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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| 163 | |
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| 164 | %type<decl> context_declaration context_declaration_list context_declaring_list context_specifier |
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| 165 | |
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| 166 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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| 167 | %type<decl> declaration_specifier declarator declaring_list |
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| 168 | |
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| 169 | %type<decl> elaborated_type_name |
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| 170 | |
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| 171 | %type<decl> enumerator_list enum_name |
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| 172 | %type<en> enumerator_value_opt |
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| 173 | |
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| 174 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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| 175 | |
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| 176 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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| 177 | %type<en> field field_list |
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| 178 | |
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| 179 | %type<decl> function_array function_declarator function_definition function_no_ptr function_ptr |
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| 180 | |
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| 181 | %type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function |
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| 182 | %type<decl> identifier_parameter_ptr identifier_list |
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| 183 | |
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| 184 | %type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple |
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| 185 | %type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list |
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| 186 | %type<decl> new_abstract_ptr new_abstract_tuple |
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| 187 | |
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| 188 | %type<decl> new_array_parameter_1st_dimension |
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| 189 | |
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| 190 | %type<decl> new_context_declaring_list new_declaration new_field_declaring_list |
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| 191 | %type<decl> new_function_declaration new_function_return new_function_specifier |
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| 192 | |
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| 193 | %type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple |
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| 194 | %type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr |
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| 195 | |
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| 196 | %type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt |
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| 197 | |
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| 198 | %type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier |
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| 199 | |
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| 200 | %type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array |
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| 201 | %type<decl> old_function_declarator old_function_no_ptr old_function_ptr |
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| 202 | |
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| 203 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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| 204 | %type<decl> parameter_type_list_opt |
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| 205 | |
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| 206 | %type<decl> paren_identifier paren_typedef |
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| 207 | |
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| 208 | %type<decl> storage_class storage_class_name storage_class_list |
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| 209 | |
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| 210 | %type<decl> sue_declaration_specifier sue_type_specifier |
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| 211 | |
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| 212 | %type<tclass> type_class |
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| 213 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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| 214 | |
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| 215 | %type<decl> typedef typedef_array typedef_declaration typedef_declaration_specifier typedef_expression |
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| 216 | %type<decl> typedef_function typedef_parameter_array typedef_parameter_function typedef_parameter_ptr |
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| 217 | %type<decl> typedef_parameter_redeclarator typedef_ptr typedef_redeclarator typedef_type_specifier |
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| 218 | %type<decl> typegen_declaration_specifier typegen_type_specifier |
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| 219 | |
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| 220 | %type<decl> type_name type_name_no_function |
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| 221 | %type<decl> type_parameter type_parameter_list |
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| 222 | |
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| 223 | %type<en> type_name_list |
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| 224 | |
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| 225 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier |
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| 226 | |
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| 227 | %type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function |
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| 228 | %type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr |
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| 229 | |
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| 230 | /* initializers */ |
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| 231 | %type<in> initializer initializer_list initializer_opt |
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| 232 | |
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| 233 | /* designators */ |
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| 234 | %type<en> designator designator_list designation |
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| 235 | |
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| 236 | |
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| 237 | /* Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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| 238 | is ambiguous: |
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| 239 | .---------. matches IF '(' comma_expression ')' statement |
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| 240 | if ( C ) S1 else S2 |
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| 241 | `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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| 242 | |
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| 243 | %nonassoc THEN /* rule precedence for IF '(' comma_expression ')' statement */ |
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| 244 | %nonassoc ELSE /* token precedence for start of else clause in IF statement */ |
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| 245 | |
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| 246 | %start translation_unit /* parse-tree root */ |
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| 247 | |
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| 248 | %% |
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| 249 | /************************* Namespace Management ********************************/ |
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| 250 | |
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| 251 | /* The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal |
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| 252 | symbols "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a |
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| 253 | purely context-free grammar, such a grammar would obscure the relationship between syntactic and semantic |
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| 254 | constructs. Hence, this grammar uses the ANSI style. |
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| 255 | |
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| 256 | Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, |
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| 257 | those introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. |
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| 258 | This latter type name creates a third class of identifiers that must be distinguished by the scanner. |
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| 259 | |
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| 260 | Since the scanner cannot distinguish among the different classes of identifiers without some context |
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| 261 | information, it accesses a data structure (the TypedefTable) to allow classification of an identifier that |
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| 262 | it has just read. Semantic actions during the parser update this data structure when the class of |
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| 263 | identifiers change. |
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| 264 | |
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| 265 | Because the Cforall language is block-scoped, there is the possibility that an identifier can change its |
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| 266 | class in a local scope; it must revert to its original class at the end of the block. Since type names can |
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| 267 | be local to a particular declaration, each declaration is itself a scope. This requires distinguishing |
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| 268 | between type names that are local to the current declaration scope and those that persist past the end of |
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| 269 | the declaration (i.e., names defined in "typedef" or "type" declarations). |
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| 270 | |
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| 271 | The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and |
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| 272 | closing of scopes. Every push must have a matching pop, although it is regrettable the matching pairs do |
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| 273 | not always occur within the same rule. These non-terminals may appear in more contexts than strictly |
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| 274 | necessary from a semantic point of view. Unfortunately, these extra rules are necessary to prevent parsing |
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| 275 | conflicts -- the parser may not have enough context and look-ahead information to decide whether a new |
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| 276 | scope is necessary, so the effect of these extra rules is to open a new scope unconditionally. As the |
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| 277 | grammar evolves, it may be neccesary to add or move around "push" and "pop" nonterminals to resolve |
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| 278 | conflicts of this sort. */ |
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| 279 | |
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| 280 | push: |
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| 281 | { |
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| 282 | typedefTable.enterScope(); |
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| 283 | } |
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| 284 | ; |
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| 285 | |
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| 286 | pop: |
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| 287 | { |
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| 288 | typedefTable.leaveScope(); |
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| 289 | } |
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| 290 | ; |
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| 291 | |
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| 292 | /************************* CONSTANTS ********************************/ |
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| 293 | |
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| 294 | constant: |
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| 295 | /* ENUMERATIONconstant is not included here; it is treated as a variable with type |
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| 296 | "enumeration constant". */ |
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[17cd4eb] | 297 | INTEGERconstant { $$ = new ConstantNode(ConstantNode::Integer, $1); } |
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| 298 | | FLOATINGconstant { $$ = new ConstantNode(ConstantNode::Float, $1); } |
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| 299 | | CHARACTERconstant { $$ = new ConstantNode(ConstantNode::Character, $1); } |
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[51b7345] | 300 | ; |
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| 301 | |
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| 302 | identifier: |
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| 303 | IDENTIFIER |
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| 304 | | ATTR_IDENTIFIER /* CFA */ |
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| 305 | | zero_one /* CFA */ |
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| 306 | ; |
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| 307 | |
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| 308 | no_01_identifier: |
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| 309 | IDENTIFIER |
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| 310 | | ATTR_IDENTIFIER /* CFA */ |
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| 311 | ; |
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| 312 | |
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| 313 | no_attr_identifier: |
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| 314 | IDENTIFIER |
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| 315 | ; |
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| 316 | |
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| 317 | zero_one: /* CFA */ |
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| 318 | ZERO |
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| 319 | | ONE |
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| 320 | ; |
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| 321 | |
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| 322 | string_literal_list: /* juxtaposed strings are concatenated */ |
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[17cd4eb] | 323 | STRINGliteral { $$ = new ConstantNode(ConstantNode::String, $1); } |
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| 324 | | string_literal_list STRINGliteral { $$ = $1->append( $2 ); } |
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[51b7345] | 325 | ; |
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| 326 | |
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| 327 | /************************* EXPRESSIONS ********************************/ |
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| 328 | |
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| 329 | primary_expression: |
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| 330 | IDENTIFIER /* typedef name cannot be used as a variable name */ |
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| 331 | { $$ = new VarRefNode($1); } |
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| 332 | | zero_one |
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| 333 | { $$ = new VarRefNode($1); } |
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| 334 | | constant |
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| 335 | { $$ = $1; } |
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| 336 | | string_literal_list |
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| 337 | { $$ = $1; } |
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| 338 | | '(' comma_expression ')' |
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| 339 | { $$ = $2; } |
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| 340 | | '(' compound_statement ')' /* GCC, lambda expression */ |
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| 341 | { $$ = new ValofExprNode($2); } |
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| 342 | ; |
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| 343 | |
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| 344 | postfix_expression: |
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| 345 | primary_expression |
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| 346 | | postfix_expression '[' push assignment_expression pop ']' |
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| 347 | /* CFA, comma_expression disallowed in the context because it results in a commom user error: |
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| 348 | subscripting a matrix with x[i,j] instead of x[i][j]. While this change is not backwards |
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| 349 | compatible, there seems to be little advantage to this feature and many disadvantages. It |
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| 350 | is possible to write x[(i,j)] in CFA, which is equivalent to the old x[i,j]. */ |
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| 351 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Index), $1, $4); } |
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| 352 | | postfix_expression '(' argument_expression_list ')' |
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| 353 | { $$ = new CompositeExprNode($1, $3); } |
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| 354 | | postfix_expression '.' no_attr_identifier |
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[17cd4eb] | 355 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::FieldSel), $1, new VarRefNode($3)); } |
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[51b7345] | 356 | | postfix_expression '.' '[' push field_list pop ']' /* CFA, tuple field selector */ |
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| 357 | | postfix_expression ARROW no_attr_identifier |
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[17cd4eb] | 358 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PFieldSel), $1, new VarRefNode($3)); } |
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[51b7345] | 359 | | postfix_expression ARROW '[' push field_list pop ']' /* CFA, tuple field selector */ |
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| 360 | | postfix_expression ICR |
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| 361 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::IncrPost), $1); } |
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| 362 | | postfix_expression DECR |
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| 363 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::DecrPost), $1); } |
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| 364 | /* GCC has priority: cast_expression */ |
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[6c3744e] | 365 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' /* C99 */ |
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[51b7345] | 366 | { $$ = 0; } |
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| 367 | ; |
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| 368 | |
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| 369 | argument_expression_list: |
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| 370 | argument_expression |
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| 371 | | argument_expression_list ',' argument_expression |
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[17cd4eb] | 372 | { $$ = (ExpressionNode *)($1->set_link($3)); } |
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[51b7345] | 373 | ; |
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| 374 | |
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| 375 | argument_expression: |
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| 376 | /* empty */ /* use default argument */ |
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| 377 | { $$ = 0; } |
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| 378 | | assignment_expression |
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| 379 | | no_attr_identifier ':' assignment_expression |
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[17cd4eb] | 380 | { $$ = $3->set_asArgName($1); } |
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[51b7345] | 381 | /* Only a list of no_attr_identifier_or_typedef_name is allowed in this context. However, there |
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| 382 | is insufficient look ahead to distinguish between this list of parameter names and a tuple, |
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| 383 | so the tuple form must be used with an appropriate semantic check. */ |
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| 384 | | '[' push assignment_expression pop ']' ':' assignment_expression |
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| 385 | { $$ = $7->set_asArgName($3); } |
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| 386 | | '[' push assignment_expression ',' tuple_expression_list pop ']' ':' assignment_expression |
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| 387 | { $$ = $9->set_asArgName(new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); } |
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| 388 | ; |
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| 389 | |
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| 390 | field_list: /* CFA, tuple field selector */ |
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| 391 | field |
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[17cd4eb] | 392 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
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[51b7345] | 393 | ; |
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| 394 | |
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| 395 | field: /* CFA, tuple field selector */ |
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| 396 | no_attr_identifier |
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[17cd4eb] | 397 | { $$ = new VarRefNode( $1 ); } |
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[51b7345] | 398 | | no_attr_identifier '.' field |
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[17cd4eb] | 399 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::FieldSel), new VarRefNode( $1 ), $3); } |
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[51b7345] | 400 | | no_attr_identifier '.' '[' push field_list pop ']' |
---|
[17cd4eb] | 401 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::FieldSel), new VarRefNode( $1 ), $5); } |
---|
[51b7345] | 402 | | no_attr_identifier ARROW field |
---|
[17cd4eb] | 403 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PFieldSel), new VarRefNode( $1 ), $3); } |
---|
[51b7345] | 404 | | no_attr_identifier ARROW '[' push field_list pop ']' |
---|
[17cd4eb] | 405 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PFieldSel), new VarRefNode( $1 ), $5); } |
---|
[51b7345] | 406 | ; |
---|
| 407 | |
---|
| 408 | unary_expression: |
---|
| 409 | postfix_expression |
---|
| 410 | | ICR unary_expression |
---|
| 411 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Incr), $2); } |
---|
| 412 | | DECR unary_expression |
---|
| 413 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Decr), $2); } |
---|
| 414 | | EXTENSION cast_expression /* GCC */ |
---|
| 415 | { $$ = $2; } |
---|
| 416 | | unary_operator cast_expression |
---|
| 417 | { $$ = new CompositeExprNode($1, $2); } |
---|
| 418 | | '!' cast_expression |
---|
| 419 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Neg), $2); } |
---|
| 420 | | '*' cast_expression /* CFA */ |
---|
| 421 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PointTo), $2); } |
---|
| 422 | /* '*' is is separated from unary_operator because of shift/reduce conflict in: |
---|
| 423 | { * X; } // dereference X |
---|
| 424 | { * int X; } // CFA declaration of pointer to int |
---|
| 425 | '&' must be moved here if C++ reference variables are supported. */ |
---|
| 426 | | SIZEOF unary_expression |
---|
| 427 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::SizeOf), $2); } |
---|
| 428 | | SIZEOF '(' type_name_no_function ')' |
---|
| 429 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::SizeOf), new TypeValueNode($3)); } |
---|
| 430 | | ATTR_IDENTIFIER |
---|
| 431 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Attr), new VarRefNode($1)); } |
---|
| 432 | | ATTR_IDENTIFIER '(' type_name ')' |
---|
| 433 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Attr), new VarRefNode($1), new TypeValueNode($3)); } |
---|
| 434 | | ATTR_IDENTIFIER '(' argument_expression ')' |
---|
| 435 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Attr), new VarRefNode($1), $3); } |
---|
| 436 | | ALIGNOF unary_expression /* GCC, variable alignment */ |
---|
| 437 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::AlignOf), $2); } |
---|
| 438 | | ALIGNOF '(' type_name_no_function ')' /* GCC, type alignment */ |
---|
| 439 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::AlignOf), new TypeValueNode($3)); } |
---|
| 440 | | ANDAND no_attr_identifier /* GCC, address of label */ |
---|
[17cd4eb] | 441 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LabelAddress), new VarRefNode($2, true)); } |
---|
[51b7345] | 442 | ; |
---|
| 443 | |
---|
| 444 | unary_operator: |
---|
[17cd4eb] | 445 | '&' { $$ = new OperatorNode(OperatorNode::AddressOf); } |
---|
| 446 | | '+' { $$ = new OperatorNode(OperatorNode::UnPlus); } |
---|
| 447 | | '-' { $$ = new OperatorNode(OperatorNode::UnMinus); } |
---|
| 448 | | '~' { $$ = new OperatorNode(OperatorNode::BitNeg); } |
---|
[51b7345] | 449 | ; |
---|
| 450 | |
---|
| 451 | cast_expression: |
---|
| 452 | unary_expression |
---|
| 453 | | '(' type_name_no_function ')' cast_expression |
---|
[17cd4eb] | 454 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cast), new TypeValueNode($2), $4); } |
---|
[51b7345] | 455 | | '(' type_name_no_function ')' tuple |
---|
[17cd4eb] | 456 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cast), new TypeValueNode($2), $4); } |
---|
[51b7345] | 457 | ; |
---|
| 458 | |
---|
| 459 | multiplicative_expression: |
---|
| 460 | cast_expression |
---|
| 461 | | multiplicative_expression '*' cast_expression |
---|
[17cd4eb] | 462 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Mul),$1,$3); } |
---|
[51b7345] | 463 | | multiplicative_expression '/' cast_expression |
---|
[17cd4eb] | 464 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Div),$1,$3); } |
---|
[51b7345] | 465 | | multiplicative_expression '%' cast_expression |
---|
[17cd4eb] | 466 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Mod),$1,$3); } |
---|
[51b7345] | 467 | ; |
---|
| 468 | |
---|
| 469 | additive_expression: |
---|
| 470 | multiplicative_expression |
---|
| 471 | | additive_expression '+' multiplicative_expression |
---|
[17cd4eb] | 472 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Plus),$1,$3); } |
---|
[51b7345] | 473 | | additive_expression '-' multiplicative_expression |
---|
[17cd4eb] | 474 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Minus),$1,$3); } |
---|
[51b7345] | 475 | ; |
---|
| 476 | |
---|
| 477 | shift_expression: |
---|
| 478 | additive_expression |
---|
| 479 | | shift_expression LS additive_expression |
---|
[17cd4eb] | 480 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LShift),$1,$3); } |
---|
[51b7345] | 481 | | shift_expression RS additive_expression |
---|
| 482 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::RShift),$1,$3); } |
---|
| 483 | ; |
---|
| 484 | |
---|
| 485 | relational_expression: |
---|
| 486 | shift_expression |
---|
| 487 | | relational_expression '<' shift_expression |
---|
| 488 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LThan),$1,$3); } |
---|
| 489 | | relational_expression '>' shift_expression |
---|
| 490 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::GThan),$1,$3); } |
---|
| 491 | | relational_expression LE shift_expression |
---|
| 492 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LEThan),$1,$3); } |
---|
| 493 | | relational_expression GE shift_expression |
---|
| 494 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::GEThan),$1,$3); } |
---|
| 495 | ; |
---|
| 496 | |
---|
| 497 | equality_expression: |
---|
| 498 | relational_expression |
---|
| 499 | | equality_expression EQ relational_expression |
---|
| 500 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Eq), $1, $3); } |
---|
| 501 | | equality_expression NE relational_expression |
---|
| 502 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Neq), $1, $3); } |
---|
| 503 | ; |
---|
| 504 | |
---|
| 505 | AND_expression: |
---|
| 506 | equality_expression |
---|
| 507 | | AND_expression '&' equality_expression |
---|
| 508 | { $$ =new CompositeExprNode(new OperatorNode(OperatorNode::BitAnd), $1, $3); } |
---|
| 509 | ; |
---|
| 510 | |
---|
| 511 | exclusive_OR_expression: |
---|
| 512 | AND_expression |
---|
| 513 | | exclusive_OR_expression '^' AND_expression |
---|
| 514 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Xor), $1, $3); } |
---|
| 515 | ; |
---|
| 516 | |
---|
| 517 | inclusive_OR_expression: |
---|
| 518 | exclusive_OR_expression |
---|
| 519 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
| 520 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::BitOr), $1, $3); } |
---|
| 521 | ; |
---|
| 522 | |
---|
| 523 | logical_AND_expression: |
---|
| 524 | inclusive_OR_expression |
---|
| 525 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
| 526 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::And), $1, $3); } |
---|
| 527 | ; |
---|
| 528 | |
---|
| 529 | logical_OR_expression: |
---|
| 530 | logical_AND_expression |
---|
| 531 | | logical_OR_expression OROR logical_AND_expression |
---|
| 532 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Or), $1, $3); } |
---|
| 533 | ; |
---|
| 534 | |
---|
| 535 | conditional_expression: |
---|
| 536 | logical_OR_expression |
---|
| 537 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
| 538 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cond), |
---|
| 539 | (ExpressionNode *)mkList((*$1,*$3,*$5))); } |
---|
| 540 | | logical_OR_expression '?' /* empty */ ':' conditional_expression /* GCC, omitted first operand */ |
---|
| 541 | { $$=new CompositeExprNode(new OperatorNode(OperatorNode::NCond),$1,$4); } |
---|
| 542 | | logical_OR_expression '?' comma_expression ':' tuple /* CFA, tuple expression */ |
---|
| 543 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cond), |
---|
| 544 | (ExpressionNode *)mkList(( *$1, *$3, *$5 ))); } |
---|
| 545 | ; |
---|
| 546 | |
---|
| 547 | constant_expression: |
---|
| 548 | conditional_expression |
---|
| 549 | ; |
---|
| 550 | |
---|
| 551 | assignment_expression: |
---|
| 552 | /* CFA, assignment is separated from assignment_operator to ensure no assignment operations |
---|
| 553 | for tuples */ |
---|
| 554 | conditional_expression |
---|
| 555 | | unary_expression '=' assignment_expression |
---|
[17cd4eb] | 556 | { $$ =new CompositeExprNode(new OperatorNode(OperatorNode::Assign), $1, $3); } |
---|
[51b7345] | 557 | | unary_expression assignment_operator assignment_expression |
---|
[17cd4eb] | 558 | { $$ =new CompositeExprNode($2, $1, $3); } |
---|
[51b7345] | 559 | | tuple assignment_opt /* CFA, tuple expression */ |
---|
| 560 | { |
---|
[3848e0e] | 561 | if ( $2 == 0 ) { |
---|
[51b7345] | 562 | $$ = $1; |
---|
| 563 | } else { |
---|
| 564 | $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $2 ); |
---|
| 565 | } |
---|
| 566 | } |
---|
| 567 | ; |
---|
| 568 | |
---|
| 569 | assignment_expression_opt: |
---|
| 570 | /* empty */ |
---|
| 571 | { $$ = new NullExprNode; } |
---|
| 572 | | assignment_expression |
---|
| 573 | ; |
---|
| 574 | |
---|
| 575 | tuple: /* CFA, tuple */ |
---|
| 576 | /* CFA, one assignment_expression is factored out of comma_expression to eliminate a |
---|
| 577 | shift/reduce conflict with comma_expression in new_identifier_parameter_array and |
---|
| 578 | new_abstract_array */ |
---|
| 579 | '[' push pop ']' |
---|
| 580 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ) ); } |
---|
| 581 | | '[' push assignment_expression pop ']' |
---|
| 582 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), $3 ); } |
---|
| 583 | | '[' push ',' tuple_expression_list pop ']' |
---|
| 584 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(new NullExprNode)->set_link( $4 ) ); } |
---|
| 585 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
---|
| 586 | { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 ) ) ); } |
---|
| 587 | ; |
---|
| 588 | |
---|
| 589 | tuple_expression_list: |
---|
| 590 | assignment_expression_opt |
---|
| 591 | | tuple_expression_list ',' assignment_expression_opt |
---|
| 592 | { $$ = (ExpressionNode *)$1->set_link( $3 ); } |
---|
| 593 | ; |
---|
| 594 | |
---|
| 595 | assignment_operator: |
---|
| 596 | MULTassign { $$ = new OperatorNode(OperatorNode::MulAssn); } |
---|
| 597 | | DIVassign { $$ = new OperatorNode(OperatorNode::DivAssn); } |
---|
| 598 | | MODassign { $$ = new OperatorNode(OperatorNode::ModAssn); } |
---|
| 599 | | PLUSassign { $$ = new OperatorNode(OperatorNode::PlusAssn); } |
---|
| 600 | | MINUSassign { $$ = new OperatorNode(OperatorNode::MinusAssn); } |
---|
| 601 | | LSassign { $$ = new OperatorNode(OperatorNode::LSAssn); } |
---|
| 602 | | RSassign { $$ = new OperatorNode(OperatorNode::RSAssn); } |
---|
| 603 | | ANDassign { $$ = new OperatorNode(OperatorNode::AndAssn); } |
---|
| 604 | | ERassign { $$ = new OperatorNode(OperatorNode::ERAssn); } |
---|
| 605 | | ORassign { $$ = new OperatorNode(OperatorNode::OrAssn); } |
---|
| 606 | ; |
---|
| 607 | |
---|
| 608 | comma_expression: |
---|
| 609 | assignment_expression |
---|
| 610 | | comma_expression ',' assignment_expression /* { $$ = (ExpressionNode *)$1->add_to_list($3); } */ |
---|
| 611 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Comma),$1,$3); } |
---|
| 612 | ; |
---|
| 613 | |
---|
| 614 | comma_expression_opt: |
---|
| 615 | /* empty */ { $$ = 0; } |
---|
| 616 | | comma_expression |
---|
| 617 | ; |
---|
| 618 | |
---|
| 619 | /*************************** STATEMENTS *******************************/ |
---|
| 620 | |
---|
| 621 | statement: |
---|
| 622 | labeled_statement |
---|
| 623 | | compound_statement |
---|
| 624 | | expression_statement { $$ = $1; } |
---|
| 625 | | selection_statement |
---|
| 626 | | iteration_statement |
---|
| 627 | | jump_statement |
---|
| 628 | | exception_statement |
---|
| 629 | | asm_statement |
---|
| 630 | ; |
---|
| 631 | |
---|
| 632 | labeled_statement: |
---|
| 633 | no_attr_identifier ':' attribute_list_opt statement |
---|
| 634 | { $$ = $4->add_label($1);} |
---|
| 635 | ; |
---|
| 636 | |
---|
| 637 | compound_statement: |
---|
| 638 | '{' '}' |
---|
| 639 | { $$ = new CompoundStmtNode( (StatementNode *)0 ); } |
---|
| 640 | | '{' |
---|
| 641 | /* Two scopes are necessary because the block itself has a scope, but every declaration within |
---|
| 642 | the block also requires its own scope */ |
---|
| 643 | push push |
---|
| 644 | label_declaration_opt /* GCC, local labels */ |
---|
[6c3744e] | 645 | block_item_list pop '}' /* C99, intermix declarations and statements */ |
---|
[51b7345] | 646 | { $$ = new CompoundStmtNode( $5 ); } |
---|
| 647 | ; |
---|
| 648 | |
---|
[6c3744e] | 649 | block_item_list: /* C99 */ |
---|
[51b7345] | 650 | block_item |
---|
| 651 | | block_item_list push block_item |
---|
[3848e0e] | 652 | { if ($1 != 0) { $1->set_link($3); $$ = $1; } } |
---|
[51b7345] | 653 | ; |
---|
| 654 | |
---|
| 655 | block_item: |
---|
| 656 | declaration /* CFA, new & old style declarations */ |
---|
| 657 | { $$ = new StatementNode( $1 ); } |
---|
| 658 | | EXTENSION declaration /* GCC */ |
---|
| 659 | { $$ = new StatementNode( $2 ); } |
---|
| 660 | | statement pop |
---|
| 661 | ; |
---|
| 662 | |
---|
| 663 | statement_list: |
---|
| 664 | statement |
---|
| 665 | | statement_list statement |
---|
[3848e0e] | 666 | { if ($1 != 0) { $1->set_link($2); $$ = $1; } } |
---|
[51b7345] | 667 | ; |
---|
| 668 | |
---|
| 669 | expression_statement: |
---|
| 670 | comma_expression_opt ';' |
---|
| 671 | { $$ = new StatementNode(StatementNode::Exp, $1, 0); } |
---|
| 672 | ; |
---|
| 673 | |
---|
| 674 | selection_statement: |
---|
| 675 | IF '(' comma_expression ')' statement %prec THEN |
---|
| 676 | /* explicitly deal with the shift/reduce conflict on if/else */ |
---|
| 677 | { $$ = new StatementNode(StatementNode::If, $3, $5); } |
---|
| 678 | | IF '(' comma_expression ')' statement ELSE statement |
---|
| 679 | { $$ = new StatementNode(StatementNode::If, $3, (StatementNode *)mkList((*$5, *$7)) ); } |
---|
| 680 | | SWITCH '(' comma_expression ')' case_clause /* CFA */ |
---|
| 681 | { $$ = new StatementNode(StatementNode::Switch, $3, $5); } |
---|
| 682 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' /* CFA */ |
---|
| 683 | { $$ = new StatementNode(StatementNode::Switch, $3, $8); /* xxx */ } |
---|
| 684 | /* The semantics of the declaration list is changed to include any associated initialization, |
---|
| 685 | which is performed *before* the transfer to the appropriate case clause. Statements after |
---|
| 686 | the initial declaration list can never be executed, and therefore, are removed from the |
---|
| 687 | grammar even though C allows it. */ |
---|
| 688 | | CHOOSE '(' comma_expression ')' case_clause /* CFA */ |
---|
| 689 | { $$ = new StatementNode(StatementNode::Choose, $3, $5); } |
---|
| 690 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' /* CFA */ |
---|
| 691 | { $$ = new StatementNode(StatementNode::Choose, $3, $8); } |
---|
| 692 | ; |
---|
| 693 | |
---|
| 694 | /* CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a |
---|
| 695 | case clause allows a list of values and subranges. */ |
---|
| 696 | |
---|
| 697 | case_value: /* CFA */ |
---|
| 698 | constant_expression { $$ = $1; } |
---|
| 699 | | constant_expression ELLIPSIS constant_expression /* GCC, subrange */ |
---|
| 700 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range),$1,$3); } |
---|
| 701 | | subrange /* CFA, subrange */ |
---|
| 702 | ; |
---|
| 703 | |
---|
| 704 | case_value_list: /* CFA */ |
---|
| 705 | case_value |
---|
| 706 | | case_value_list ',' case_value |
---|
| 707 | { $$ = new CompositeExprNode(new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(tupleContents($1))->set_link($3) ); } |
---|
| 708 | ; |
---|
| 709 | |
---|
| 710 | case_label: /* CFA */ |
---|
| 711 | CASE case_value_list ':' { $$ = new StatementNode(StatementNode::Case, $2, 0); } |
---|
| 712 | | DEFAULT ':' { $$ = new StatementNode(StatementNode::Default); } |
---|
| 713 | /* A semantic check is required to ensure only one default clause per switch/choose |
---|
| 714 | statement. */ |
---|
| 715 | ; |
---|
| 716 | |
---|
| 717 | case_label_list: /* CFA */ |
---|
| 718 | case_label |
---|
| 719 | | case_label_list case_label { $$ = (StatementNode *)($1->set_link($2)); } |
---|
| 720 | ; |
---|
| 721 | |
---|
| 722 | case_clause: /* CFA */ |
---|
| 723 | case_label_list statement { $$ = $1->append_last_case($2); } |
---|
| 724 | ; |
---|
| 725 | |
---|
| 726 | switch_clause_list_opt: /* CFA */ |
---|
| 727 | /* empty */ { $$ = 0; } |
---|
| 728 | | switch_clause_list |
---|
| 729 | ; |
---|
| 730 | |
---|
| 731 | switch_clause_list: /* CFA */ |
---|
| 732 | case_label_list statement_list |
---|
| 733 | { $$ = $1->append_last_case($2); } |
---|
| 734 | | switch_clause_list case_label_list statement_list |
---|
| 735 | { $$ = (StatementNode *)($1->set_link($2->append_last_case($3))); } |
---|
| 736 | ; |
---|
| 737 | |
---|
| 738 | choose_clause_list_opt: /* CFA */ |
---|
| 739 | /* empty */ { $$ = 0; } |
---|
| 740 | | choose_clause_list |
---|
| 741 | ; |
---|
| 742 | |
---|
| 743 | choose_clause_list: /* CFA */ |
---|
| 744 | case_label_list fall_through |
---|
| 745 | { $$ = $1->append_last_case($2); } |
---|
| 746 | | case_label_list statement_list fall_through_opt |
---|
| 747 | { $$ = $1->append_last_case((StatementNode *)mkList((*$2,*$3))); } |
---|
| 748 | | choose_clause_list case_label_list fall_through |
---|
| 749 | { $$ = (StatementNode *)($1->set_link($2->append_last_case($3))); } |
---|
| 750 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
| 751 | { $$ = (StatementNode *)($1->set_link($2->append_last_case((StatementNode *)mkList((*$3,*$4))))); } |
---|
| 752 | ; |
---|
| 753 | |
---|
| 754 | fall_through_opt: /* CFA */ |
---|
| 755 | /* empty */ { $$ = 0; } |
---|
| 756 | | fall_through |
---|
| 757 | ; |
---|
| 758 | |
---|
| 759 | fall_through: /* CFA */ |
---|
| 760 | FALLTHRU { $$ = new StatementNode(StatementNode::Fallthru, 0, 0); } |
---|
| 761 | | FALLTHRU ';' { $$ = new StatementNode(StatementNode::Fallthru, 0, 0); } |
---|
| 762 | ; |
---|
| 763 | |
---|
| 764 | iteration_statement: |
---|
| 765 | WHILE '(' comma_expression ')' statement |
---|
| 766 | { $$ = new StatementNode(StatementNode::While, $3, $5); } |
---|
| 767 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
| 768 | { $$ = new StatementNode(StatementNode::Do, $5, $2); } |
---|
| 769 | | FOR '(' push for_control_expression ')' statement |
---|
| 770 | { $$ = new StatementNode(StatementNode::For, $4, $6); } |
---|
| 771 | ; |
---|
| 772 | |
---|
| 773 | for_control_expression: |
---|
| 774 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
| 775 | { $$ = new ForCtlExprNode($1, $4, $6); } |
---|
[6c3744e] | 776 | | declaration comma_expression_opt ';' comma_expression_opt /* C99 */ |
---|
[51b7345] | 777 | /* Like C++, the loop index can be declared local to the loop. */ |
---|
| 778 | { $$ = new ForCtlExprNode($1, $2, $4); } |
---|
| 779 | ; |
---|
| 780 | |
---|
| 781 | jump_statement: |
---|
| 782 | GOTO no_attr_identifier ';' |
---|
| 783 | { $$ = new StatementNode(StatementNode::Goto, $2); } |
---|
| 784 | | GOTO '*' comma_expression ';' /* GCC, computed goto */ |
---|
| 785 | /* The syntax for the GCC computed goto violates normal expression precedence, e.g., |
---|
| 786 | goto *i+3; => goto *(i+3); whereas normal operator precedence yields goto (*i)+3; */ |
---|
| 787 | { $$ = new StatementNode(StatementNode::Goto, $3); } |
---|
| 788 | | CONTINUE ';' |
---|
| 789 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
| 790 | iteration statement. */ |
---|
| 791 | { $$ = new StatementNode(StatementNode::Continue, 0, 0); } |
---|
| 792 | | CONTINUE no_attr_identifier ';' /* CFA, multi-level continue */ |
---|
| 793 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
| 794 | iteration statement, and the target of the transfer appears only at the start of an |
---|
| 795 | iteration statement. */ |
---|
| 796 | { $$ = new StatementNode(StatementNode::Continue, $2); } |
---|
| 797 | | BREAK ';' |
---|
| 798 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
| 799 | iteration statement. */ |
---|
| 800 | { $$ = new StatementNode(StatementNode::Break, 0, 0); } |
---|
| 801 | | BREAK no_attr_identifier ';' /* CFA, multi-level exit */ |
---|
| 802 | /* A semantic check is required to ensure this statement appears only in the body of an |
---|
| 803 | iteration statement, and the target of the transfer appears only at the start of an |
---|
| 804 | iteration statement. */ |
---|
| 805 | { $$ = new StatementNode(StatementNode::Break, $2 ); } |
---|
| 806 | | RETURN comma_expression_opt ';' |
---|
| 807 | { $$ = new StatementNode(StatementNode::Return, $2, 0); } |
---|
| 808 | | THROW assignment_expression ';' |
---|
| 809 | { $$ = new StatementNode(StatementNode::Throw, $2, 0); } |
---|
| 810 | | THROW ';' |
---|
| 811 | { $$ = new StatementNode(StatementNode::Throw, 0, 0); } |
---|
| 812 | ; |
---|
| 813 | |
---|
| 814 | exception_statement: |
---|
| 815 | TRY compound_statement handler_list |
---|
| 816 | { $$ = new StatementNode(StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3)))); } |
---|
| 817 | | TRY compound_statement finally_clause |
---|
| 818 | { $$ = new StatementNode(StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3)))); } |
---|
| 819 | | TRY compound_statement handler_list finally_clause |
---|
| 820 | { |
---|
| 821 | $3->set_link($4); |
---|
| 822 | $$ = new StatementNode(StatementNode::Try, 0,(StatementNode *)(mkList((*$2,*$3)))); |
---|
| 823 | } |
---|
| 824 | ; |
---|
| 825 | |
---|
| 826 | handler_list: |
---|
| 827 | /* There must be at least one catch clause */ |
---|
| 828 | handler_clause |
---|
| 829 | /* ISO/IEC 9899:1999 Section 15.3(6) If present, a "..." handler shall be the last handler for |
---|
| 830 | its try block. */ |
---|
| 831 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 832 | { $$ = StatementNode::newCatchStmt( 0, $5, true ); } |
---|
| 833 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
| 834 | { $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); } |
---|
| 835 | ; |
---|
| 836 | |
---|
| 837 | handler_clause: |
---|
| 838 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
| 839 | { $$ = StatementNode::newCatchStmt($5, $8); } |
---|
| 840 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
| 841 | { $$ = $1->set_link( StatementNode::newCatchStmt($6, $9) ); } |
---|
| 842 | ; |
---|
| 843 | |
---|
| 844 | finally_clause: |
---|
| 845 | FINALLY compound_statement |
---|
| 846 | { $$ = new StatementNode(StatementNode::Finally, 0, $2); |
---|
| 847 | std::cout << "Just created a finally node" << std::endl; |
---|
| 848 | } |
---|
| 849 | ; |
---|
| 850 | |
---|
| 851 | exception_declaration: |
---|
| 852 | /* A semantic check is required to ensure type_specifier does not create a new type, e.g.: |
---|
| 853 | |
---|
| 854 | catch ( struct { int i; } x ) ... |
---|
| 855 | |
---|
| 856 | This new type cannot catch any thrown type because of name equivalence among types. */ |
---|
| 857 | type_specifier |
---|
| 858 | | type_specifier declarator |
---|
| 859 | { |
---|
| 860 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 861 | $$ = $2->addType( $1 ); |
---|
| 862 | } |
---|
| 863 | | type_specifier variable_abstract_declarator |
---|
| 864 | { $$ = $2->addType( $1 ); } |
---|
| 865 | | new_abstract_declarator_tuple no_attr_identifier /* CFA */ |
---|
| 866 | { |
---|
| 867 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 868 | $$ = $1->addName( $2 ); |
---|
| 869 | } |
---|
| 870 | | new_abstract_declarator_tuple /* CFA */ |
---|
| 871 | ; |
---|
| 872 | |
---|
| 873 | asm_statement: |
---|
| 874 | ASM type_qualifier_list_opt '(' constant_expression ')' ';' |
---|
| 875 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
| 876 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ')' ';' /* remaining GCC */ |
---|
| 877 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
| 878 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
| 879 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
| 880 | | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ':' asm_operands_opt ':' |
---|
| 881 | asm_clobbers_list ')' ';' |
---|
| 882 | { $$ = new StatementNode(StatementNode::Asm, 0, 0); } |
---|
| 883 | ; |
---|
| 884 | |
---|
| 885 | asm_operands_opt: /* GCC */ |
---|
| 886 | /* empty */ |
---|
| 887 | | asm_operands_list |
---|
| 888 | ; |
---|
| 889 | |
---|
| 890 | asm_operands_list: /* GCC */ |
---|
| 891 | asm_operand |
---|
| 892 | | asm_operands_list ',' asm_operand |
---|
| 893 | ; |
---|
| 894 | |
---|
| 895 | asm_operand: /* GCC */ |
---|
| 896 | STRINGliteral '(' constant_expression ')' {} |
---|
| 897 | ; |
---|
| 898 | |
---|
| 899 | asm_clobbers_list: /* GCC */ |
---|
| 900 | STRINGliteral {} |
---|
| 901 | | asm_clobbers_list ',' STRINGliteral |
---|
| 902 | ; |
---|
| 903 | |
---|
| 904 | /******************************* DECLARATIONS *********************************/ |
---|
| 905 | |
---|
| 906 | declaration_list_opt: /* used at beginning of switch statement */ |
---|
| 907 | pop |
---|
| 908 | { $$ = 0; } |
---|
| 909 | | declaration_list |
---|
| 910 | ; |
---|
| 911 | |
---|
| 912 | declaration_list: |
---|
| 913 | declaration |
---|
| 914 | | declaration_list push declaration |
---|
| 915 | { $$ = $1->appendList( $3 ); } |
---|
| 916 | ; |
---|
| 917 | |
---|
| 918 | old_declaration_list_opt: /* used to declare parameter types in K&R style functions */ |
---|
| 919 | pop |
---|
| 920 | { $$ = 0; } |
---|
| 921 | | old_declaration_list |
---|
| 922 | ; |
---|
| 923 | |
---|
| 924 | old_declaration_list: |
---|
| 925 | old_declaration |
---|
| 926 | | old_declaration_list push old_declaration |
---|
| 927 | { $$ = $1->appendList( $3 ); } |
---|
| 928 | ; |
---|
| 929 | |
---|
| 930 | label_declaration_opt: /* GCC, local label */ |
---|
| 931 | /* empty */ |
---|
| 932 | | label_declaration_list |
---|
| 933 | ; |
---|
| 934 | |
---|
| 935 | label_declaration_list: /* GCC, local label */ |
---|
| 936 | LABEL label_list ';' |
---|
| 937 | | label_declaration_list LABEL label_list ';' |
---|
| 938 | ; |
---|
| 939 | |
---|
| 940 | label_list: /* GCC, local label */ |
---|
| 941 | no_attr_identifier_or_typedef_name {} |
---|
| 942 | | label_list ',' no_attr_identifier_or_typedef_name {} |
---|
| 943 | ; |
---|
| 944 | |
---|
| 945 | declaration: /* CFA, new & old style declarations */ |
---|
| 946 | new_declaration |
---|
| 947 | | old_declaration |
---|
| 948 | ; |
---|
| 949 | |
---|
| 950 | /* C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and |
---|
| 951 | function declarations. CFA declarations use the same declaration tokens as in C; however, CFA places |
---|
| 952 | declaration modifiers to the left of the base type, while C declarations place modifiers to the right of |
---|
| 953 | the base type. CFA declaration modifiers are interpreted from left to right and the entire type |
---|
| 954 | specification is distributed across all variables in the declaration list (as in Pascal). ANSI C and the |
---|
| 955 | new CFA declarations may appear together in the same program block, but cannot be mixed within a specific |
---|
| 956 | declaration. |
---|
| 957 | |
---|
| 958 | CFA C |
---|
| 959 | [10] int x; int x[10]; // array of 10 integers |
---|
| 960 | [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
| 961 | */ |
---|
| 962 | |
---|
| 963 | new_declaration: /* CFA */ |
---|
| 964 | new_variable_declaration pop ';' |
---|
| 965 | | new_typedef_declaration pop ';' |
---|
| 966 | | new_function_declaration pop ';' |
---|
| 967 | | type_declaring_list pop ';' |
---|
| 968 | | context_specifier pop ';' |
---|
| 969 | ; |
---|
| 970 | |
---|
| 971 | new_variable_declaration: /* CFA */ |
---|
| 972 | new_variable_specifier initializer_opt |
---|
| 973 | { |
---|
| 974 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
| 975 | $$ = $1; |
---|
| 976 | } |
---|
| 977 | | declaration_qualifier_list new_variable_specifier initializer_opt |
---|
| 978 | /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is |
---|
| 979 | necessary to preclude them as a type_qualifier cannot appear in that context. */ |
---|
| 980 | { |
---|
| 981 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
| 982 | $$ = $2->addQualifiers( $1 ); |
---|
| 983 | } |
---|
| 984 | | new_variable_declaration pop ',' push identifier_or_typedef_name initializer_opt |
---|
| 985 | { |
---|
| 986 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID); |
---|
| 987 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 988 | } |
---|
| 989 | ; |
---|
| 990 | |
---|
| 991 | new_variable_specifier: /* CFA */ |
---|
| 992 | /* A semantic check is required to ensure asm_name only appears on declarations with implicit |
---|
| 993 | or explicit static storage-class */ |
---|
| 994 | new_abstract_declarator_no_tuple identifier_or_typedef_name asm_name_opt |
---|
| 995 | { |
---|
| 996 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 997 | $$ = $1->addName( $2 ); |
---|
| 998 | } |
---|
| 999 | | new_abstract_tuple identifier_or_typedef_name asm_name_opt |
---|
| 1000 | { |
---|
| 1001 | typedefTable.setNextIdentifier( *$2 ); |
---|
| 1002 | $$ = $1->addName( $2 ); |
---|
| 1003 | } |
---|
| 1004 | | type_qualifier_list new_abstract_tuple identifier_or_typedef_name asm_name_opt |
---|
| 1005 | { |
---|
| 1006 | typedefTable.setNextIdentifier( *$3 ); |
---|
| 1007 | $$ = $2->addQualifiers( $1 )->addName( $3 ); |
---|
| 1008 | } |
---|
| 1009 | ; |
---|
| 1010 | |
---|
| 1011 | new_function_declaration: /* CFA */ |
---|
| 1012 | new_function_specifier |
---|
| 1013 | { |
---|
| 1014 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
| 1015 | $$ = $1; |
---|
| 1016 | } |
---|
| 1017 | | declaration_qualifier_list new_function_specifier |
---|
| 1018 | /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is |
---|
| 1019 | necessary to preclude them as a type_qualifier cannot appear in this context. */ |
---|
| 1020 | { |
---|
| 1021 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
| 1022 | $$ = $2->addQualifiers( $1 ); |
---|
| 1023 | } |
---|
| 1024 | | new_function_declaration pop ',' push identifier_or_typedef_name |
---|
| 1025 | { |
---|
| 1026 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID); |
---|
| 1027 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1028 | } |
---|
| 1029 | ; |
---|
| 1030 | |
---|
| 1031 | new_function_specifier: /* CFA */ |
---|
| 1032 | '[' push pop ']' identifier '(' push new_parameter_type_list_opt pop ')' |
---|
| 1033 | { |
---|
| 1034 | typedefTable.setNextIdentifier( *($5) ); |
---|
| 1035 | $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1036 | } |
---|
| 1037 | | '[' push pop ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')' |
---|
| 1038 | { |
---|
| 1039 | typedefTable.setNextIdentifier( *($5) ); |
---|
| 1040 | $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1041 | } |
---|
| 1042 | /* identifier_or_typedef_name must be broken apart because of the sequence: |
---|
| 1043 | |
---|
| 1044 | '[' ']' identifier_or_typedef_name '(' new_parameter_type_list_opt ')' |
---|
| 1045 | '[' ']' type_specifier |
---|
| 1046 | |
---|
| 1047 | type_specifier can resolve to just TYPEDEFname (e.g. typedef int T; int f( T );). Therefore |
---|
| 1048 | this must be flattened to allow lookahead to the '(' without having to reduce |
---|
| 1049 | identifier_or_typedef_name. */ |
---|
| 1050 | | new_abstract_tuple identifier_or_typedef_name '(' push new_parameter_type_list_opt pop ')' |
---|
| 1051 | /* To obtain LR(1), this rule must be factored out from function return type (see |
---|
| 1052 | new_abstract_declarator). */ |
---|
| 1053 | { |
---|
| 1054 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1055 | } |
---|
| 1056 | | new_function_return identifier_or_typedef_name '(' push new_parameter_type_list_opt pop ')' |
---|
| 1057 | { |
---|
| 1058 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1059 | } |
---|
| 1060 | ; |
---|
| 1061 | |
---|
| 1062 | new_function_return: /* CFA */ |
---|
| 1063 | '[' push new_parameter_list pop ']' |
---|
| 1064 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 1065 | | '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']' |
---|
| 1066 | /* To obtain LR(1), the last new_abstract_parameter_list is added into this flattened rule to |
---|
| 1067 | lookahead to the ']'. */ |
---|
| 1068 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
| 1069 | ; |
---|
| 1070 | |
---|
| 1071 | new_typedef_declaration: /* CFA */ |
---|
| 1072 | TYPEDEF new_variable_specifier |
---|
| 1073 | { |
---|
| 1074 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
| 1075 | $$ = $2->addTypedef(); |
---|
| 1076 | } |
---|
| 1077 | | TYPEDEF new_function_specifier |
---|
| 1078 | { |
---|
| 1079 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
| 1080 | $$ = $2->addTypedef(); |
---|
| 1081 | } |
---|
| 1082 | | new_typedef_declaration pop ',' push no_attr_identifier |
---|
| 1083 | { |
---|
| 1084 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD); |
---|
| 1085 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1086 | } |
---|
| 1087 | ; |
---|
| 1088 | |
---|
| 1089 | /* Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is |
---|
| 1090 | factored out as a separate form of declaration, which syntactically precludes storage-class specifiers and |
---|
| 1091 | initialization. */ |
---|
| 1092 | |
---|
| 1093 | typedef_declaration: |
---|
| 1094 | TYPEDEF type_specifier declarator |
---|
| 1095 | { |
---|
| 1096 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
| 1097 | $$ = $3->addType( $2 )->addTypedef(); |
---|
| 1098 | } |
---|
| 1099 | | typedef_declaration pop ',' push declarator |
---|
| 1100 | { |
---|
| 1101 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
| 1102 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
| 1103 | } |
---|
| 1104 | | type_qualifier_list TYPEDEF type_specifier declarator /* remaining OBSOLESCENT (see 2) */ |
---|
| 1105 | { |
---|
| 1106 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
| 1107 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
| 1108 | } |
---|
| 1109 | | type_specifier TYPEDEF declarator |
---|
| 1110 | { |
---|
| 1111 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
| 1112 | $$ = $3->addType( $1 )->addTypedef(); |
---|
| 1113 | } |
---|
| 1114 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
| 1115 | { |
---|
| 1116 | typedefTable.addToEnclosingScope( TypedefTable::TD); |
---|
| 1117 | $$ = $4->addQualifiers($1)->addTypedef()->addType($1); |
---|
| 1118 | } |
---|
| 1119 | ; |
---|
| 1120 | |
---|
| 1121 | typedef_expression: /* GCC, naming expression type */ |
---|
| 1122 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
| 1123 | { |
---|
| 1124 | typedefTable.addToEnclosingScope(*($2), TypedefTable::TD); |
---|
| 1125 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1126 | } |
---|
| 1127 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
| 1128 | { |
---|
| 1129 | typedefTable.addToEnclosingScope(*($5), TypedefTable::TD); |
---|
| 1130 | $$ = DeclarationNode::newName( 0 ); // XXX |
---|
| 1131 | } |
---|
| 1132 | ; |
---|
| 1133 | |
---|
| 1134 | old_declaration: |
---|
| 1135 | declaring_list pop ';' |
---|
| 1136 | | typedef_declaration pop ';' |
---|
| 1137 | | typedef_expression pop ';' /* GCC, naming expression type */ |
---|
| 1138 | | sue_declaration_specifier pop ';' |
---|
| 1139 | ; |
---|
| 1140 | |
---|
| 1141 | declaring_list: |
---|
| 1142 | /* A semantic check is required to ensure asm_name only appears on declarations with implicit |
---|
| 1143 | or explicit static storage-class */ |
---|
| 1144 | declaration_specifier declarator asm_name_opt initializer_opt |
---|
| 1145 | { |
---|
[bdd516a] | 1146 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[51b7345] | 1147 | $$ = ($2->addType( $1 ))->addInitializer($4); |
---|
| 1148 | } |
---|
| 1149 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1150 | { |
---|
| 1151 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
| 1152 | $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer($6) ) ); |
---|
| 1153 | } |
---|
| 1154 | ; |
---|
| 1155 | |
---|
| 1156 | declaration_specifier: /* type specifier + storage class */ |
---|
| 1157 | basic_declaration_specifier |
---|
| 1158 | | sue_declaration_specifier |
---|
| 1159 | | typedef_declaration_specifier |
---|
| 1160 | | typegen_declaration_specifier |
---|
| 1161 | ; |
---|
| 1162 | |
---|
| 1163 | type_specifier: /* declaration specifier - storage class */ |
---|
| 1164 | basic_type_specifier |
---|
| 1165 | | sue_type_specifier |
---|
| 1166 | | typedef_type_specifier |
---|
| 1167 | | typegen_type_specifier |
---|
| 1168 | ; |
---|
| 1169 | |
---|
| 1170 | type_qualifier_list_opt: /* GCC, used in asm_statement */ |
---|
| 1171 | /* empty */ |
---|
| 1172 | { $$ = 0; } |
---|
| 1173 | | type_qualifier_list |
---|
| 1174 | ; |
---|
| 1175 | |
---|
| 1176 | type_qualifier_list: |
---|
| 1177 | /* A semantic check is necessary to ensure a type qualifier is appropriate for the kind of |
---|
| 1178 | declaration. |
---|
| 1179 | |
---|
| 1180 | ISO/IEC 9899:1999 Section 6.7.3(4) : If the same qualifier appears more than once in the |
---|
| 1181 | same specifier-qualifier-list, either directly or via one or more typedefs, the behavior is |
---|
| 1182 | the same as if it appeared only once. */ |
---|
| 1183 | type_qualifier |
---|
| 1184 | | type_qualifier_list type_qualifier |
---|
| 1185 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1186 | ; |
---|
| 1187 | |
---|
| 1188 | type_qualifier: |
---|
| 1189 | type_qualifier_name |
---|
| 1190 | | attribute |
---|
| 1191 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
| 1192 | ; |
---|
| 1193 | |
---|
| 1194 | type_qualifier_name: |
---|
| 1195 | CONST |
---|
| 1196 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); } |
---|
| 1197 | | RESTRICT |
---|
| 1198 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); } |
---|
| 1199 | | VOLATILE |
---|
| 1200 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); } |
---|
| 1201 | | LVALUE /* CFA */ |
---|
| 1202 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); } |
---|
[bdd516a] | 1203 | | ATOMIC |
---|
| 1204 | { $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); } |
---|
[51b7345] | 1205 | | FORALL '(' |
---|
| 1206 | { |
---|
| 1207 | typedefTable.enterScope(); |
---|
| 1208 | } |
---|
[17cd4eb] | 1209 | type_parameter_list ')' /* CFA */ |
---|
[51b7345] | 1210 | { |
---|
| 1211 | typedefTable.leaveScope(); |
---|
| 1212 | $$ = DeclarationNode::newForall( $4 ); |
---|
| 1213 | } |
---|
| 1214 | ; |
---|
| 1215 | |
---|
| 1216 | declaration_qualifier_list: |
---|
| 1217 | storage_class_list |
---|
| 1218 | | type_qualifier_list storage_class_list /* remaining OBSOLESCENT (see 2) */ |
---|
| 1219 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1220 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
| 1221 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1222 | ; |
---|
| 1223 | |
---|
| 1224 | storage_class_list: |
---|
| 1225 | /* A semantic check is necessary to ensure a storage class is appropriate for the kind of |
---|
| 1226 | declaration and that only one of each is specified, except for inline, which can appear |
---|
| 1227 | with the others. |
---|
| 1228 | |
---|
| 1229 | ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in |
---|
| 1230 | the declaration specifiers in a declaration. */ |
---|
| 1231 | storage_class |
---|
| 1232 | | storage_class_list storage_class |
---|
| 1233 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1234 | ; |
---|
| 1235 | |
---|
| 1236 | storage_class: |
---|
| 1237 | storage_class_name |
---|
| 1238 | ; |
---|
| 1239 | |
---|
| 1240 | storage_class_name: |
---|
| 1241 | AUTO |
---|
| 1242 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); } |
---|
| 1243 | | EXTERN |
---|
| 1244 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); } |
---|
| 1245 | | REGISTER |
---|
| 1246 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); } |
---|
| 1247 | | STATIC |
---|
| 1248 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); } |
---|
[6c3744e] | 1249 | | INLINE /* C99 */ |
---|
[51b7345] | 1250 | /* INLINE is essentially a storage class specifier for functions, and hence, belongs here. */ |
---|
| 1251 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); } |
---|
[6c3744e] | 1252 | | FORTRAN /* C99 */ |
---|
[51b7345] | 1253 | { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); } |
---|
| 1254 | ; |
---|
| 1255 | |
---|
| 1256 | basic_type_name: |
---|
| 1257 | CHAR |
---|
| 1258 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
| 1259 | | DOUBLE |
---|
| 1260 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
| 1261 | | FLOAT |
---|
| 1262 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
| 1263 | | INT |
---|
| 1264 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
| 1265 | | LONG |
---|
| 1266 | { $$ = DeclarationNode::newModifier( DeclarationNode::Long ); } |
---|
| 1267 | | SHORT |
---|
| 1268 | { $$ = DeclarationNode::newModifier( DeclarationNode::Short ); } |
---|
| 1269 | | SIGNED |
---|
| 1270 | { $$ = DeclarationNode::newModifier( DeclarationNode::Signed ); } |
---|
| 1271 | | UNSIGNED |
---|
| 1272 | { $$ = DeclarationNode::newModifier( DeclarationNode::Unsigned ); } |
---|
| 1273 | | VOID |
---|
| 1274 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
[6c3744e] | 1275 | | BOOL /* C99 */ |
---|
[51b7345] | 1276 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
[6c3744e] | 1277 | | COMPLEX /* C99 */ |
---|
[51b7345] | 1278 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); } |
---|
[6c3744e] | 1279 | | IMAGINARY /* C99 */ |
---|
[51b7345] | 1280 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); } |
---|
| 1281 | ; |
---|
| 1282 | |
---|
| 1283 | basic_declaration_specifier: |
---|
| 1284 | /* A semantic check is necessary for conflicting storage classes. */ |
---|
| 1285 | basic_type_specifier |
---|
| 1286 | | declaration_qualifier_list basic_type_specifier |
---|
| 1287 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1288 | | basic_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
| 1289 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1290 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
| 1291 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1292 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
| 1293 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
| 1294 | ; |
---|
| 1295 | |
---|
| 1296 | basic_type_specifier: |
---|
| 1297 | direct_type_name |
---|
| 1298 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
| 1299 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
| 1300 | ; |
---|
| 1301 | |
---|
| 1302 | direct_type_name: |
---|
| 1303 | /* A semantic check is necessary for conflicting type qualifiers. */ |
---|
| 1304 | basic_type_name |
---|
| 1305 | | type_qualifier_list basic_type_name |
---|
| 1306 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1307 | | direct_type_name type_qualifier |
---|
| 1308 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1309 | | direct_type_name basic_type_name |
---|
| 1310 | { $$ = $1->addType( $2 ); } |
---|
| 1311 | ; |
---|
| 1312 | |
---|
| 1313 | indirect_type_name: |
---|
| 1314 | TYPEOF '(' type_name ')' /* GCC: typeof(x) y; */ |
---|
| 1315 | { $$ = $3; } |
---|
| 1316 | | TYPEOF '(' comma_expression ')' /* GCC: typeof(a+b) y; */ |
---|
| 1317 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
| 1318 | | ATTR_TYPEGENname '(' type_name ')' /* CFA: e.g., @type(x) y; */ |
---|
| 1319 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1320 | | ATTR_TYPEGENname '(' comma_expression ')' /* CFA: e.g., @type(a+b) y; */ |
---|
| 1321 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1322 | ; |
---|
| 1323 | |
---|
| 1324 | sue_declaration_specifier: |
---|
| 1325 | sue_type_specifier |
---|
| 1326 | | declaration_qualifier_list sue_type_specifier |
---|
| 1327 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1328 | | sue_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
| 1329 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1330 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
| 1331 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1332 | ; |
---|
| 1333 | |
---|
| 1334 | sue_type_specifier: |
---|
| 1335 | elaborated_type_name /* struct, union, enum */ |
---|
| 1336 | | type_qualifier_list elaborated_type_name |
---|
| 1337 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1338 | | sue_type_specifier type_qualifier |
---|
| 1339 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1340 | ; |
---|
| 1341 | |
---|
| 1342 | typedef_declaration_specifier: |
---|
| 1343 | typedef_type_specifier |
---|
| 1344 | | declaration_qualifier_list typedef_type_specifier |
---|
| 1345 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1346 | | typedef_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
| 1347 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1348 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
| 1349 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1350 | ; |
---|
| 1351 | |
---|
| 1352 | typedef_type_specifier: /* typedef types */ |
---|
| 1353 | TYPEDEFname |
---|
| 1354 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
| 1355 | | type_qualifier_list TYPEDEFname |
---|
| 1356 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
| 1357 | | typedef_type_specifier type_qualifier |
---|
| 1358 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1359 | ; |
---|
| 1360 | |
---|
| 1361 | elaborated_type_name: |
---|
| 1362 | aggregate_name |
---|
| 1363 | | enum_name |
---|
| 1364 | ; |
---|
| 1365 | |
---|
| 1366 | aggregate_name: |
---|
| 1367 | aggregate_key '{' field_declaration_list '}' |
---|
| 1368 | { $$ = DeclarationNode::newAggregate( $1, 0, 0, 0, $3 ); } |
---|
| 1369 | | aggregate_key no_attr_identifier_or_typedef_name |
---|
| 1370 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, 0, 0 ); } |
---|
| 1371 | | aggregate_key no_attr_identifier_or_typedef_name '{' field_declaration_list '}' |
---|
| 1372 | { $$ = DeclarationNode::newAggregate( $1, $2, 0, 0, $4 ); } |
---|
| 1373 | | aggregate_key '(' push type_parameter_list pop ')' '{' field_declaration_list '}' /* CFA */ |
---|
| 1374 | { $$ = DeclarationNode::newAggregate( $1, 0, $4, 0, $8 ); } |
---|
| 1375 | | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name /* CFA */ |
---|
| 1376 | { $$ = DeclarationNode::newAggregate( $1, $7, $4, 0, 0 ); } |
---|
| 1377 | | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' /* CFA */ |
---|
| 1378 | { $$ = DeclarationNode::newAggregate( $1, $7, $4, 0, $9 ); } |
---|
| 1379 | | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' '{' field_declaration_list '}' /* CFA */ |
---|
| 1380 | { $$ = DeclarationNode::newAggregate( $1, 0, $4, $8, $11 ); } |
---|
| 1381 | | aggregate_key '(' push type_name_list pop ')' no_attr_identifier_or_typedef_name /* CFA */ |
---|
| 1382 | /* push and pop are only to prevent S/R conflicts */ |
---|
| 1383 | { $$ = DeclarationNode::newAggregate( $1, $7, 0, $4, 0 ); } |
---|
| 1384 | | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' /* CFA */ |
---|
| 1385 | { $$ = DeclarationNode::newAggregate( $1, $10, $4, $8, $12 ); } |
---|
| 1386 | ; |
---|
| 1387 | |
---|
| 1388 | aggregate_key: |
---|
| 1389 | STRUCT attribute_list_opt |
---|
| 1390 | { $$ = DeclarationNode::Struct; } |
---|
| 1391 | | UNION attribute_list_opt |
---|
| 1392 | { $$ = DeclarationNode::Union; } |
---|
| 1393 | ; |
---|
| 1394 | |
---|
| 1395 | field_declaration_list: |
---|
| 1396 | field_declaration |
---|
| 1397 | { $$ = $1; } |
---|
| 1398 | | field_declaration_list field_declaration |
---|
| 1399 | { $$ = $1->appendList( $2 ); } |
---|
| 1400 | ; |
---|
| 1401 | |
---|
| 1402 | field_declaration: |
---|
| 1403 | new_field_declaring_list ';' /* CFA, new style field declaration */ |
---|
| 1404 | | EXTENSION new_field_declaring_list ';' /* GCC */ |
---|
| 1405 | { $$ = $2; } |
---|
| 1406 | | field_declaring_list ';' |
---|
| 1407 | | EXTENSION field_declaring_list ';' /* GCC */ |
---|
| 1408 | { $$ = $2; } |
---|
| 1409 | ; |
---|
| 1410 | |
---|
| 1411 | new_field_declaring_list: /* CFA, new style field declaration */ |
---|
| 1412 | new_abstract_declarator_tuple /* CFA, no field name */ |
---|
| 1413 | | new_abstract_declarator_tuple no_attr_identifier_or_typedef_name |
---|
| 1414 | { $$ = $1->addName( $2 ); } |
---|
| 1415 | | new_field_declaring_list ',' no_attr_identifier_or_typedef_name |
---|
| 1416 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
| 1417 | | new_field_declaring_list ',' /* CFA, no field name */ |
---|
| 1418 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
| 1419 | ; |
---|
| 1420 | |
---|
| 1421 | field_declaring_list: |
---|
| 1422 | type_specifier field_declarator |
---|
| 1423 | { $$ = $2->addType( $1 ); } |
---|
| 1424 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
| 1425 | { $$ = $1->appendList( $1->cloneBaseType( $4 ) ); } |
---|
| 1426 | ; |
---|
| 1427 | |
---|
| 1428 | field_declarator: |
---|
| 1429 | /* empty */ /* CFA, no field name */ |
---|
| 1430 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } |
---|
| 1431 | | bit_subrange_size /* no field name */ |
---|
| 1432 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
| 1433 | | variable_declarator bit_subrange_size_opt |
---|
| 1434 | /* A semantic check is required to ensure bit_subrange only appears on base type int. */ |
---|
| 1435 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1436 | | typedef_redeclarator bit_subrange_size_opt |
---|
| 1437 | /* A semantic check is required to ensure bit_subrange only appears on base type int. */ |
---|
| 1438 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1439 | | variable_abstract_declarator /* CFA, no field name */ |
---|
| 1440 | ; |
---|
| 1441 | |
---|
| 1442 | bit_subrange_size_opt: |
---|
| 1443 | /* empty */ |
---|
| 1444 | { $$ = 0; } |
---|
| 1445 | | bit_subrange_size |
---|
| 1446 | { $$ = $1; } |
---|
| 1447 | ; |
---|
| 1448 | |
---|
| 1449 | bit_subrange_size: |
---|
| 1450 | ':' constant_expression |
---|
| 1451 | { $$ = $2; } |
---|
| 1452 | ; |
---|
| 1453 | |
---|
| 1454 | enum_key: |
---|
| 1455 | ENUM attribute_list_opt |
---|
| 1456 | ; |
---|
| 1457 | |
---|
| 1458 | enum_name: |
---|
| 1459 | enum_key '{' enumerator_list comma_opt '}' |
---|
| 1460 | { $$ = DeclarationNode::newEnum( 0, $3 ); } |
---|
| 1461 | | enum_key no_attr_identifier_or_typedef_name '{' enumerator_list comma_opt '}' |
---|
| 1462 | { $$ = DeclarationNode::newEnum( $2, $4 ); } |
---|
| 1463 | | enum_key no_attr_identifier_or_typedef_name |
---|
| 1464 | { $$ = DeclarationNode::newEnum( $2, 0 ); } |
---|
| 1465 | ; |
---|
| 1466 | |
---|
| 1467 | enumerator_list: |
---|
| 1468 | no_attr_identifier_or_typedef_name enumerator_value_opt |
---|
| 1469 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
| 1470 | | enumerator_list ',' no_attr_identifier_or_typedef_name enumerator_value_opt |
---|
| 1471 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
| 1472 | ; |
---|
| 1473 | |
---|
| 1474 | enumerator_value_opt: |
---|
| 1475 | /* empty */ |
---|
| 1476 | { $$ = 0; } |
---|
| 1477 | | '=' constant_expression |
---|
| 1478 | { $$ = $2; } |
---|
| 1479 | ; |
---|
| 1480 | |
---|
| 1481 | /* Minimum of one parameter after which ellipsis is allowed only at the end. */ |
---|
| 1482 | |
---|
| 1483 | new_parameter_type_list_opt: /* CFA */ |
---|
| 1484 | /* empty */ |
---|
| 1485 | { $$ = 0; } |
---|
| 1486 | | new_parameter_type_list |
---|
| 1487 | ; |
---|
| 1488 | |
---|
| 1489 | new_parameter_type_list: /* CFA, abstract + real */ |
---|
| 1490 | new_abstract_parameter_list |
---|
| 1491 | | new_parameter_list |
---|
| 1492 | | new_parameter_list pop ',' push new_abstract_parameter_list |
---|
| 1493 | { $$ = $1->appendList( $5 ); } |
---|
| 1494 | | new_abstract_parameter_list pop ',' push ELLIPSIS |
---|
| 1495 | { $$ = $1->addVarArgs(); } |
---|
| 1496 | | new_parameter_list pop ',' push ELLIPSIS |
---|
| 1497 | { $$ = $1->addVarArgs(); } |
---|
| 1498 | ; |
---|
| 1499 | |
---|
| 1500 | new_parameter_list: /* CFA */ |
---|
| 1501 | /* To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last |
---|
| 1502 | new_abstract_parameter_list is factored out from new_parameter_list, flattening the rules |
---|
| 1503 | to get lookahead to the ']'. */ |
---|
| 1504 | new_parameter_declaration |
---|
| 1505 | | new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1506 | { $$ = $1->appendList( $5 ); } |
---|
| 1507 | | new_parameter_list pop ',' push new_parameter_declaration |
---|
| 1508 | { $$ = $1->appendList( $5 ); } |
---|
| 1509 | | new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration |
---|
| 1510 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
| 1511 | ; |
---|
| 1512 | |
---|
| 1513 | new_abstract_parameter_list: /* CFA, new & old style abstract */ |
---|
| 1514 | new_abstract_parameter_declaration |
---|
| 1515 | | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration |
---|
| 1516 | { $$ = $1->appendList( $5 ); } |
---|
| 1517 | ; |
---|
| 1518 | |
---|
| 1519 | parameter_type_list_opt: |
---|
| 1520 | /* empty */ |
---|
| 1521 | { $$ = 0; } |
---|
| 1522 | | parameter_type_list |
---|
| 1523 | ; |
---|
| 1524 | |
---|
| 1525 | parameter_type_list: |
---|
| 1526 | parameter_list |
---|
| 1527 | | parameter_list pop ',' push ELLIPSIS |
---|
| 1528 | { $$ = $1->addVarArgs(); } |
---|
| 1529 | ; |
---|
| 1530 | |
---|
| 1531 | parameter_list: /* abstract + real */ |
---|
| 1532 | abstract_parameter_declaration |
---|
| 1533 | | parameter_declaration |
---|
| 1534 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
| 1535 | { $$ = $1->appendList( $5 ); } |
---|
| 1536 | | parameter_list pop ',' push parameter_declaration |
---|
| 1537 | { $$ = $1->appendList( $5 ); } |
---|
| 1538 | ; |
---|
| 1539 | |
---|
| 1540 | /* Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different |
---|
| 1541 | semantics for typedef name by using typedef_parameter_redeclarator instead of typedef_redeclarator, and |
---|
| 1542 | function prototypes. */ |
---|
| 1543 | |
---|
| 1544 | new_parameter_declaration: /* CFA, new & old style parameter declaration */ |
---|
| 1545 | parameter_declaration |
---|
| 1546 | | new_identifier_parameter_declarator_no_tuple identifier_or_typedef_name assignment_opt |
---|
| 1547 | { $$ = $1->addName( $2 ); } |
---|
| 1548 | | new_abstract_tuple identifier_or_typedef_name assignment_opt |
---|
| 1549 | /* To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). */ |
---|
| 1550 | { $$ = $1->addName( $2 ); } |
---|
| 1551 | | type_qualifier_list new_abstract_tuple identifier_or_typedef_name assignment_opt |
---|
| 1552 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
| 1553 | | new_function_specifier |
---|
| 1554 | ; |
---|
| 1555 | |
---|
| 1556 | new_abstract_parameter_declaration: /* CFA, new & old style parameter declaration */ |
---|
| 1557 | abstract_parameter_declaration |
---|
| 1558 | | new_identifier_parameter_declarator_no_tuple |
---|
| 1559 | | new_abstract_tuple |
---|
| 1560 | /* To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). */ |
---|
| 1561 | | type_qualifier_list new_abstract_tuple |
---|
| 1562 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1563 | | new_abstract_function |
---|
| 1564 | ; |
---|
| 1565 | |
---|
| 1566 | parameter_declaration: |
---|
| 1567 | declaration_specifier identifier_parameter_declarator assignment_opt |
---|
| 1568 | { |
---|
| 1569 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
| 1570 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode($3) ); |
---|
| 1571 | } |
---|
| 1572 | | declaration_specifier typedef_parameter_redeclarator assignment_opt |
---|
| 1573 | { |
---|
| 1574 | typedefTable.addToEnclosingScope( TypedefTable::ID); |
---|
| 1575 | $$ = $2->addType( $1 )->addInitializer( new InitializerNode($3) ); |
---|
| 1576 | } |
---|
| 1577 | ; |
---|
| 1578 | |
---|
| 1579 | abstract_parameter_declaration: |
---|
| 1580 | declaration_specifier |
---|
| 1581 | | declaration_specifier abstract_parameter_declarator |
---|
| 1582 | { $$ = $2->addType( $1 ); } |
---|
| 1583 | ; |
---|
| 1584 | |
---|
| 1585 | /* ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
| 1586 | parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is |
---|
| 1587 | based only on identifiers. The ANSI-style parameter-list can redefine a typedef name. */ |
---|
| 1588 | |
---|
| 1589 | identifier_list: /* K&R-style parameter list => no types */ |
---|
| 1590 | no_attr_identifier |
---|
| 1591 | { $$ = DeclarationNode::newName( $1 ); } |
---|
| 1592 | | identifier_list ',' no_attr_identifier |
---|
| 1593 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
| 1594 | ; |
---|
| 1595 | |
---|
| 1596 | identifier_or_typedef_name: |
---|
| 1597 | identifier |
---|
| 1598 | | TYPEDEFname |
---|
| 1599 | | TYPEGENname |
---|
| 1600 | ; |
---|
| 1601 | |
---|
| 1602 | no_01_identifier_or_typedef_name: |
---|
| 1603 | no_01_identifier |
---|
| 1604 | | TYPEDEFname |
---|
| 1605 | | TYPEGENname |
---|
| 1606 | ; |
---|
| 1607 | |
---|
| 1608 | no_attr_identifier_or_typedef_name: |
---|
| 1609 | no_attr_identifier |
---|
| 1610 | | TYPEDEFname |
---|
| 1611 | | TYPEGENname |
---|
| 1612 | ; |
---|
| 1613 | |
---|
| 1614 | type_name_no_function: /* sizeof, alignof, cast (constructor) */ |
---|
| 1615 | new_abstract_declarator_tuple /* CFA */ |
---|
| 1616 | | type_specifier |
---|
| 1617 | | type_specifier variable_abstract_declarator |
---|
| 1618 | { $$ = $2->addType( $1 ); } |
---|
| 1619 | ; |
---|
| 1620 | |
---|
| 1621 | type_name: /* typeof, assertion */ |
---|
| 1622 | new_abstract_declarator_tuple /* CFA */ |
---|
| 1623 | | new_abstract_function /* CFA */ |
---|
| 1624 | | type_specifier |
---|
| 1625 | | type_specifier abstract_declarator |
---|
| 1626 | { $$ = $2->addType( $1 ); } |
---|
| 1627 | ; |
---|
| 1628 | |
---|
| 1629 | initializer_opt: |
---|
[17cd4eb] | 1630 | /* empty */ { $$ = 0; } |
---|
| 1631 | | '=' initializer { $$ = $2; } |
---|
[51b7345] | 1632 | ; |
---|
| 1633 | |
---|
| 1634 | initializer: |
---|
[17cd4eb] | 1635 | assignment_expression { $$ = new InitializerNode($1); } |
---|
| 1636 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode($2, true); } |
---|
[51b7345] | 1637 | ; |
---|
| 1638 | |
---|
| 1639 | initializer_list: |
---|
| 1640 | initializer |
---|
[17cd4eb] | 1641 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
| 1642 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_link($3) ); } |
---|
[51b7345] | 1643 | | initializer_list ',' designation initializer |
---|
[17cd4eb] | 1644 | { $$ = (InitializerNode *)( $1->set_link( $4->set_designators($3) ) ); } |
---|
[51b7345] | 1645 | ; |
---|
| 1646 | |
---|
[6c3744e] | 1647 | /* There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem |
---|
[51b7345] | 1648 | is use of '=' to separator the designator from the initializer value, as in: |
---|
| 1649 | |
---|
| 1650 | int x[10] = { [1] = 3 }; |
---|
| 1651 | |
---|
| 1652 | The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this |
---|
| 1653 | case, CFA changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC |
---|
| 1654 | does uses ":" for field selection. The optional use of the "=" in GCC, or in this case ":", cannot be |
---|
| 1655 | supported either due to shift/reduce conflicts */ |
---|
| 1656 | |
---|
| 1657 | designation: |
---|
[6c3744e] | 1658 | designator_list ':' /* C99, CFA uses ":" instead of "=" */ |
---|
[17cd4eb] | 1659 | | no_attr_identifier_or_typedef_name ':' /* GCC, field name */ |
---|
| 1660 | { $$ = new VarRefNode( $1 ); } |
---|
[51b7345] | 1661 | ; |
---|
| 1662 | |
---|
[6c3744e] | 1663 | designator_list: /* C99 */ |
---|
[51b7345] | 1664 | designator |
---|
[17cd4eb] | 1665 | | designator_list designator { $$ = (ExpressionNode *)($1->set_link( $2 )); } |
---|
[51b7345] | 1666 | ; |
---|
| 1667 | |
---|
| 1668 | designator: |
---|
[6c3744e] | 1669 | '.' no_attr_identifier_or_typedef_name /* C99, field name */ |
---|
[17cd4eb] | 1670 | { $$ = new VarRefNode( $2 ); } |
---|
[6c3744e] | 1671 | | '[' push assignment_expression pop ']' /* C99, single array element */ |
---|
[51b7345] | 1672 | /* assignment_expression used instead of constant_expression because of shift/reduce conflicts |
---|
| 1673 | with tuple. */ |
---|
[17cd4eb] | 1674 | { $$ = $3; } |
---|
[51b7345] | 1675 | | '[' push subrange pop ']' /* CFA, multiple array elements */ |
---|
[17cd4eb] | 1676 | { $$ = $3; } |
---|
[51b7345] | 1677 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' /* GCC, multiple array elements */ |
---|
[17cd4eb] | 1678 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range), $3, $5); } |
---|
[51b7345] | 1679 | | '.' '[' push field_list pop ']' /* CFA, tuple field selector */ |
---|
[17cd4eb] | 1680 | { $$ = $4; } |
---|
[51b7345] | 1681 | ; |
---|
| 1682 | |
---|
| 1683 | /* The CFA type system is based on parametric polymorphism, the ability to declare functions with type |
---|
| 1684 | parameters, rather than an object-oriented type system. This required four groups of extensions: |
---|
| 1685 | |
---|
| 1686 | Overloading: function, data, and operator identifiers may be overloaded. |
---|
| 1687 | |
---|
| 1688 | Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used |
---|
| 1689 | for object and incomplete types, and "ftype" is used for function types. Type declarations with |
---|
| 1690 | initializers provide definitions of new types. Type declarations with storage class "extern" provide |
---|
| 1691 | opaque types. |
---|
| 1692 | |
---|
| 1693 | Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at |
---|
| 1694 | the call site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
| 1695 | |
---|
| 1696 | Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
| 1697 | types. They serve many of the purposes of abstract classes, and specification hierarchies resemble |
---|
| 1698 | subclass hierarchies. Unlike classes, they can define relationships between types. Assertions declare |
---|
| 1699 | that a type or types provide the operations declared by a specification. Assertions are normally used |
---|
| 1700 | to declare requirements on type arguments of polymorphic functions. */ |
---|
| 1701 | |
---|
| 1702 | typegen_declaration_specifier: /* CFA */ |
---|
| 1703 | typegen_type_specifier |
---|
| 1704 | | declaration_qualifier_list typegen_type_specifier |
---|
| 1705 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1706 | | typegen_declaration_specifier storage_class /* remaining OBSOLESCENT (see 2) */ |
---|
| 1707 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1708 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
| 1709 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1710 | ; |
---|
| 1711 | |
---|
| 1712 | typegen_type_specifier: /* CFA */ |
---|
| 1713 | TYPEGENname '(' type_name_list ')' |
---|
| 1714 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
| 1715 | | type_qualifier_list TYPEGENname '(' type_name_list ')' |
---|
| 1716 | { $$ = DeclarationNode::newFromTypeGen( $2, $4 )->addQualifiers( $1 ); } |
---|
| 1717 | | typegen_type_specifier type_qualifier |
---|
| 1718 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1719 | ; |
---|
| 1720 | |
---|
| 1721 | type_parameter_list: /* CFA */ |
---|
| 1722 | type_parameter assignment_opt |
---|
| 1723 | | type_parameter_list ',' type_parameter assignment_opt |
---|
| 1724 | { $$ = $1->appendList( $3 ); } |
---|
| 1725 | ; |
---|
| 1726 | |
---|
| 1727 | type_parameter: /* CFA */ |
---|
| 1728 | type_class no_attr_identifier_or_typedef_name |
---|
| 1729 | { typedefTable.addToEnclosingScope(*($2), TypedefTable::TD); } |
---|
| 1730 | assertion_list_opt |
---|
| 1731 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
| 1732 | | type_specifier identifier_parameter_declarator |
---|
| 1733 | ; |
---|
| 1734 | |
---|
| 1735 | type_class: /* CFA */ |
---|
| 1736 | TYPE |
---|
| 1737 | { $$ = DeclarationNode::Type; } |
---|
| 1738 | | DTYPE |
---|
| 1739 | { $$ = DeclarationNode::Ftype; } |
---|
| 1740 | | FTYPE |
---|
| 1741 | { $$ = DeclarationNode::Dtype; } |
---|
| 1742 | ; |
---|
| 1743 | |
---|
| 1744 | assertion_list_opt: /* CFA */ |
---|
| 1745 | /* empty */ |
---|
| 1746 | { $$ = 0; } |
---|
| 1747 | | assertion_list_opt assertion |
---|
| 1748 | { $$ = $1 == 0 ? $2 : $1->appendList( $2 ); } |
---|
| 1749 | ; |
---|
| 1750 | |
---|
| 1751 | assertion: /* CFA */ |
---|
| 1752 | '|' no_attr_identifier_or_typedef_name '(' type_name_list ')' |
---|
| 1753 | { |
---|
| 1754 | typedefTable.openContext( *($2) ); |
---|
| 1755 | $$ = DeclarationNode::newContextUse( $2, $4 ); |
---|
| 1756 | } |
---|
| 1757 | | '|' '{' push context_declaration_list '}' |
---|
| 1758 | { $$ = $4; } |
---|
| 1759 | | '|' '(' push type_parameter_list pop ')' '{' push context_declaration_list '}' '(' type_name_list ')' |
---|
| 1760 | { $$ = 0; } |
---|
| 1761 | ; |
---|
| 1762 | |
---|
| 1763 | type_name_list: /* CFA */ |
---|
| 1764 | type_name |
---|
| 1765 | { $$ = new TypeValueNode( $1 ); } |
---|
| 1766 | | assignment_expression |
---|
| 1767 | | type_name_list ',' type_name |
---|
| 1768 | { $$ = (ExpressionNode *)($1->set_link(new TypeValueNode( $3 ))); } |
---|
| 1769 | | type_name_list ',' assignment_expression |
---|
| 1770 | { $$ = (ExpressionNode *)($1->set_link($3)); } |
---|
| 1771 | ; |
---|
| 1772 | |
---|
| 1773 | type_declaring_list: /* CFA */ |
---|
| 1774 | TYPE type_declarator |
---|
| 1775 | { $$ = $2; } |
---|
| 1776 | | storage_class_list TYPE type_declarator |
---|
| 1777 | { $$ = $3->addQualifiers( $1 ); } |
---|
| 1778 | | type_declaring_list ',' type_declarator |
---|
| 1779 | { $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); } |
---|
| 1780 | ; |
---|
| 1781 | |
---|
| 1782 | type_declarator: /* CFA */ |
---|
| 1783 | type_declarator_name assertion_list_opt |
---|
| 1784 | { $$ = $1->addAssertions( $2 ); } |
---|
| 1785 | | type_declarator_name assertion_list_opt '=' type_name |
---|
| 1786 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
| 1787 | ; |
---|
| 1788 | |
---|
| 1789 | type_declarator_name: /* CFA */ |
---|
| 1790 | no_attr_identifier_or_typedef_name |
---|
| 1791 | { |
---|
| 1792 | typedefTable.addToEnclosingScope(*($1), TypedefTable::TD); |
---|
| 1793 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
| 1794 | } |
---|
| 1795 | | no_01_identifier_or_typedef_name '(' push type_parameter_list pop ')' |
---|
| 1796 | { |
---|
| 1797 | typedefTable.addToEnclosingScope(*($1), TypedefTable::TG); |
---|
| 1798 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
| 1799 | } |
---|
| 1800 | ; |
---|
| 1801 | |
---|
| 1802 | context_specifier: /* CFA */ |
---|
| 1803 | CONTEXT no_attr_identifier_or_typedef_name '(' push type_parameter_list pop ')' '{' '}' |
---|
| 1804 | { |
---|
| 1805 | typedefTable.addToEnclosingScope(*($2), TypedefTable::ID); |
---|
| 1806 | $$ = DeclarationNode::newContext( $2, $5, 0 ); |
---|
| 1807 | } |
---|
| 1808 | | CONTEXT no_attr_identifier_or_typedef_name '(' push type_parameter_list pop ')' '{' |
---|
| 1809 | { |
---|
| 1810 | typedefTable.enterContext( *($2) ); |
---|
| 1811 | typedefTable.enterScope(); |
---|
| 1812 | } |
---|
| 1813 | context_declaration_list '}' |
---|
| 1814 | { |
---|
| 1815 | typedefTable.leaveContext(); |
---|
| 1816 | typedefTable.addToEnclosingScope(*($2), TypedefTable::ID); |
---|
| 1817 | $$ = DeclarationNode::newContext( $2, $5, $10 ); |
---|
| 1818 | } |
---|
| 1819 | ; |
---|
| 1820 | |
---|
| 1821 | context_declaration_list: /* CFA */ |
---|
| 1822 | context_declaration |
---|
| 1823 | | context_declaration_list push context_declaration |
---|
| 1824 | { $$ = $1->appendList( $3 ); } |
---|
| 1825 | ; |
---|
| 1826 | |
---|
| 1827 | context_declaration: /* CFA */ |
---|
| 1828 | new_context_declaring_list pop ';' |
---|
| 1829 | | context_declaring_list pop ';' |
---|
| 1830 | ; |
---|
| 1831 | |
---|
| 1832 | new_context_declaring_list: /* CFA */ |
---|
| 1833 | new_variable_specifier |
---|
| 1834 | { |
---|
| 1835 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1836 | $$ = $1; |
---|
| 1837 | } |
---|
| 1838 | | new_function_specifier |
---|
| 1839 | { |
---|
| 1840 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 1841 | $$ = $1; |
---|
| 1842 | } |
---|
| 1843 | | new_context_declaring_list pop ',' push identifier_or_typedef_name |
---|
| 1844 | { |
---|
| 1845 | typedefTable.addToEnclosingScope2( *($5), TypedefTable::ID ); |
---|
| 1846 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1847 | } |
---|
| 1848 | ; |
---|
| 1849 | |
---|
| 1850 | context_declaring_list: /* CFA */ |
---|
| 1851 | type_specifier declarator |
---|
| 1852 | { |
---|
| 1853 | typedefTable.addToEnclosingScope2( TypedefTable::ID); |
---|
| 1854 | $$ = $2->addType( $1 ); |
---|
| 1855 | } |
---|
| 1856 | | context_declaring_list pop ',' push declarator |
---|
| 1857 | { |
---|
| 1858 | typedefTable.addToEnclosingScope2( TypedefTable::ID); |
---|
| 1859 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
| 1860 | } |
---|
| 1861 | ; |
---|
| 1862 | |
---|
| 1863 | /***************************** EXTERNAL DEFINITIONS *****************************/ |
---|
| 1864 | |
---|
| 1865 | translation_unit: |
---|
| 1866 | /* empty */ /* empty input file */ |
---|
| 1867 | {} |
---|
| 1868 | | external_definition_list |
---|
| 1869 | { |
---|
[3848e0e] | 1870 | if ( theTree ) { |
---|
[51b7345] | 1871 | theTree->appendList( $1 ); |
---|
| 1872 | } else { |
---|
| 1873 | theTree = $1; |
---|
| 1874 | } |
---|
| 1875 | } |
---|
| 1876 | ; |
---|
| 1877 | |
---|
| 1878 | external_definition_list: |
---|
| 1879 | external_definition |
---|
| 1880 | | external_definition_list push external_definition |
---|
| 1881 | { |
---|
[3848e0e] | 1882 | if ( $1 ) { |
---|
[51b7345] | 1883 | $$ = $1->appendList( $3 ); |
---|
| 1884 | } else { |
---|
| 1885 | $$ = $3; |
---|
| 1886 | } |
---|
| 1887 | } |
---|
| 1888 | ; |
---|
| 1889 | |
---|
| 1890 | external_definition_list_opt: |
---|
| 1891 | /* empty */ |
---|
| 1892 | { |
---|
| 1893 | $$ = 0; |
---|
| 1894 | } |
---|
| 1895 | | external_definition_list |
---|
| 1896 | ; |
---|
| 1897 | |
---|
| 1898 | external_definition: |
---|
| 1899 | declaration |
---|
| 1900 | | function_definition |
---|
| 1901 | | asm_statement /* GCC, global assembler statement */ |
---|
| 1902 | {} |
---|
| 1903 | | EXTERN STRINGliteral |
---|
| 1904 | { |
---|
| 1905 | linkageStack.push( linkage ); |
---|
| 1906 | linkage = LinkageSpec::fromString( *$2 ); |
---|
| 1907 | } |
---|
| 1908 | '{' external_definition_list_opt '}' /* C++-style linkage specifier */ |
---|
| 1909 | { |
---|
| 1910 | linkage = linkageStack.top(); |
---|
| 1911 | linkageStack.pop(); |
---|
| 1912 | $$ = $5; |
---|
| 1913 | } |
---|
| 1914 | | EXTENSION external_definition |
---|
| 1915 | { $$ = $2; } |
---|
| 1916 | ; |
---|
| 1917 | |
---|
| 1918 | function_definition: |
---|
| 1919 | new_function_specifier compound_statement /* CFA */ |
---|
| 1920 | { |
---|
| 1921 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1922 | typedefTable.leaveScope(); |
---|
| 1923 | $$ = $1->addFunctionBody( $2 ); |
---|
| 1924 | } |
---|
| 1925 | | declaration_qualifier_list new_function_specifier compound_statement /* CFA */ |
---|
| 1926 | /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is |
---|
| 1927 | necessary to preclude them as a type_qualifier cannot appear in this context. */ |
---|
| 1928 | { |
---|
| 1929 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1930 | typedefTable.leaveScope(); |
---|
| 1931 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 1932 | } |
---|
| 1933 | |
---|
| 1934 | | declaration_specifier function_declarator compound_statement |
---|
| 1935 | { |
---|
| 1936 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1937 | typedefTable.leaveScope(); |
---|
| 1938 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
| 1939 | } |
---|
| 1940 | |
---|
| 1941 | /* These rules are a concession to the "implicit int" type_specifier because there is a |
---|
| 1942 | significant amount of code with functions missing a type-specifier on the return type. |
---|
| 1943 | Parsing is possible because function_definition does not appear in the context of an |
---|
| 1944 | expression (nested functions would preclude this concession). A function prototype |
---|
| 1945 | declaration must still have a type_specifier. OBSOLESCENT (see 1) */ |
---|
| 1946 | | function_declarator compound_statement |
---|
| 1947 | { |
---|
| 1948 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1949 | typedefTable.leaveScope(); |
---|
| 1950 | $$ = $1->addFunctionBody( $2 ); |
---|
| 1951 | } |
---|
| 1952 | | type_qualifier_list function_declarator compound_statement |
---|
| 1953 | { |
---|
| 1954 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1955 | typedefTable.leaveScope(); |
---|
| 1956 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 1957 | } |
---|
| 1958 | | declaration_qualifier_list function_declarator compound_statement |
---|
| 1959 | { |
---|
| 1960 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1961 | typedefTable.leaveScope(); |
---|
| 1962 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 1963 | } |
---|
| 1964 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
| 1965 | { |
---|
| 1966 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1967 | typedefTable.leaveScope(); |
---|
| 1968 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 1969 | } |
---|
| 1970 | |
---|
| 1971 | /* Old-style K&R function definition, OBSOLESCENT (see 4) */ |
---|
| 1972 | | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1973 | { |
---|
| 1974 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1975 | typedefTable.leaveScope(); |
---|
| 1976 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
| 1977 | } |
---|
| 1978 | | old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1979 | { |
---|
| 1980 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1981 | typedefTable.leaveScope(); |
---|
| 1982 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
| 1983 | } |
---|
| 1984 | | type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1985 | { |
---|
| 1986 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1987 | typedefTable.leaveScope(); |
---|
| 1988 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 1989 | } |
---|
| 1990 | |
---|
| 1991 | /* Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) */ |
---|
| 1992 | | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement |
---|
| 1993 | { |
---|
| 1994 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1995 | typedefTable.leaveScope(); |
---|
| 1996 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 1997 | } |
---|
| 1998 | | declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt |
---|
| 1999 | compound_statement |
---|
| 2000 | { |
---|
| 2001 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2002 | typedefTable.leaveScope(); |
---|
| 2003 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2004 | } |
---|
| 2005 | ; |
---|
| 2006 | |
---|
| 2007 | declarator: |
---|
| 2008 | variable_declarator |
---|
| 2009 | | function_declarator |
---|
| 2010 | | typedef_redeclarator |
---|
| 2011 | ; |
---|
| 2012 | |
---|
| 2013 | subrange: |
---|
| 2014 | constant_expression '~' constant_expression /* CFA, integer subrange */ |
---|
| 2015 | { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range), $1, $3); } |
---|
| 2016 | ; |
---|
| 2017 | |
---|
| 2018 | asm_name_opt: /* GCC */ |
---|
| 2019 | /* empty */ |
---|
| 2020 | | ASM '(' string_literal_list ')' attribute_list_opt |
---|
| 2021 | ; |
---|
| 2022 | |
---|
| 2023 | attribute_list_opt: /* GCC */ |
---|
| 2024 | /* empty */ |
---|
| 2025 | | attribute_list |
---|
| 2026 | ; |
---|
| 2027 | |
---|
| 2028 | attribute_list: /* GCC */ |
---|
| 2029 | attribute |
---|
| 2030 | | attribute_list attribute |
---|
| 2031 | ; |
---|
| 2032 | |
---|
| 2033 | attribute: /* GCC */ |
---|
| 2034 | ATTRIBUTE '(' '(' attribute_parameter_list ')' ')' |
---|
| 2035 | ; |
---|
| 2036 | |
---|
| 2037 | attribute_parameter_list: /* GCC */ |
---|
| 2038 | attrib |
---|
| 2039 | | attribute_parameter_list ',' attrib |
---|
| 2040 | ; |
---|
| 2041 | |
---|
| 2042 | attrib: /* GCC */ |
---|
| 2043 | /* empty */ |
---|
| 2044 | | any_word |
---|
| 2045 | | any_word '(' comma_expression_opt ')' |
---|
| 2046 | ; |
---|
| 2047 | |
---|
| 2048 | any_word: /* GCC */ |
---|
| 2049 | identifier_or_typedef_name {} |
---|
| 2050 | | storage_class_name {} |
---|
| 2051 | | basic_type_name {} |
---|
| 2052 | | type_qualifier {} |
---|
| 2053 | ; |
---|
| 2054 | |
---|
| 2055 | /* ============================================================================ |
---|
| 2056 | The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are |
---|
| 2057 | necessary because the type of an identifier in wrapped around the identifier in the same form as its usage |
---|
| 2058 | in an expression, as in: |
---|
| 2059 | |
---|
| 2060 | int (*f())[10] { ... }; |
---|
| 2061 | ... (*f())[3] += 1; // definition mimics usage |
---|
| 2062 | |
---|
| 2063 | Because these patterns are highly recursive, changes at a lower level in the recursion require copying some |
---|
| 2064 | or all of the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a |
---|
| 2065 | particular context. |
---|
| 2066 | ============================================================================ */ |
---|
| 2067 | |
---|
| 2068 | /* ---------------------------------------------------------------------------- |
---|
| 2069 | The set of valid declarators before a compound statement for defining a function is less than the set of |
---|
| 2070 | declarators to define a variable or function prototype, e.g.: |
---|
| 2071 | |
---|
| 2072 | valid declaration invalid definition |
---|
| 2073 | ----------------- ------------------ |
---|
| 2074 | int f; int f {} |
---|
| 2075 | int *f; int *f {} |
---|
| 2076 | int f[10]; int f[10] {} |
---|
| 2077 | int (*f)(int); int (*f)(int) {} |
---|
| 2078 | |
---|
| 2079 | To preclude this syntactic anomaly requires separating the grammar rules for variable and function |
---|
| 2080 | declarators, hence variable_declarator and function_declarator. |
---|
| 2081 | ---------------------------------------------------------------------------- */ |
---|
| 2082 | |
---|
| 2083 | /* This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern |
---|
| 2084 | precludes declaring an array of functions versus a pointer to an array of functions. */ |
---|
| 2085 | |
---|
| 2086 | variable_declarator: |
---|
| 2087 | paren_identifier attribute_list_opt |
---|
| 2088 | | variable_ptr |
---|
| 2089 | | variable_array attribute_list_opt |
---|
| 2090 | | variable_function attribute_list_opt |
---|
| 2091 | ; |
---|
| 2092 | |
---|
| 2093 | paren_identifier: |
---|
| 2094 | identifier |
---|
| 2095 | { |
---|
| 2096 | typedefTable.setNextIdentifier( *($1) ); |
---|
| 2097 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2098 | } |
---|
| 2099 | | '(' paren_identifier ')' /* redundant parenthesis */ |
---|
| 2100 | { $$ = $2; } |
---|
| 2101 | ; |
---|
| 2102 | |
---|
| 2103 | variable_ptr: |
---|
| 2104 | '*' variable_declarator |
---|
| 2105 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2106 | | '*' type_qualifier_list variable_declarator |
---|
| 2107 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2108 | | '(' variable_ptr ')' |
---|
| 2109 | { $$ = $2; } |
---|
| 2110 | ; |
---|
| 2111 | |
---|
| 2112 | variable_array: |
---|
| 2113 | paren_identifier array_dimension |
---|
| 2114 | { $$ = $1->addArray( $2 ); } |
---|
| 2115 | | '(' variable_ptr ')' array_dimension |
---|
| 2116 | { $$ = $2->addArray( $4 ); } |
---|
| 2117 | | '(' variable_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2118 | { $$ = $2->addArray( $4 ); } |
---|
| 2119 | | '(' variable_array ')' /* redundant parenthesis */ |
---|
| 2120 | { $$ = $2; } |
---|
| 2121 | ; |
---|
| 2122 | |
---|
| 2123 | variable_function: |
---|
| 2124 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2125 | { $$ = $2->addParamList( $6 ); } |
---|
| 2126 | | '(' variable_function ')' /* redundant parenthesis */ |
---|
| 2127 | { $$ = $2; } |
---|
| 2128 | ; |
---|
| 2129 | |
---|
| 2130 | /* This pattern parses a function declarator that is not redefining a typedef name. Because functions cannot |
---|
| 2131 | be nested, there is no context where a function definition can redefine a typedef name. To allow nested |
---|
| 2132 | functions requires further separation of variable and function declarators in typedef_redeclarator. The |
---|
| 2133 | pattern precludes returning arrays and functions versus pointers to arrays and functions. */ |
---|
| 2134 | |
---|
| 2135 | function_declarator: |
---|
| 2136 | function_no_ptr attribute_list_opt |
---|
| 2137 | | function_ptr |
---|
| 2138 | | function_array attribute_list_opt |
---|
| 2139 | ; |
---|
| 2140 | |
---|
| 2141 | function_no_ptr: |
---|
| 2142 | paren_identifier '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2143 | { $$ = $1->addParamList( $4 ); } |
---|
| 2144 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2145 | { $$ = $2->addParamList( $6 ); } |
---|
| 2146 | | '(' function_no_ptr ')' /* redundant parenthesis */ |
---|
| 2147 | { $$ = $2; } |
---|
| 2148 | ; |
---|
| 2149 | |
---|
| 2150 | function_ptr: |
---|
| 2151 | '*' function_declarator |
---|
| 2152 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2153 | | '*' type_qualifier_list function_declarator |
---|
| 2154 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2155 | | '(' function_ptr ')' |
---|
| 2156 | { $$ = $2; } |
---|
| 2157 | ; |
---|
| 2158 | |
---|
| 2159 | function_array: |
---|
| 2160 | '(' function_ptr ')' array_dimension |
---|
| 2161 | { $$ = $2->addArray( $4 ); } |
---|
| 2162 | | '(' function_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2163 | { $$ = $2->addArray( $4 ); } |
---|
| 2164 | | '(' function_array ')' /* redundant parenthesis */ |
---|
| 2165 | { $$ = $2; } |
---|
| 2166 | ; |
---|
| 2167 | |
---|
| 2168 | /* This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a |
---|
| 2169 | typedef name (see function_declarator for additional comments). The pattern precludes returning arrays and |
---|
| 2170 | functions versus pointers to arrays and functions. */ |
---|
| 2171 | |
---|
| 2172 | old_function_declarator: |
---|
| 2173 | old_function_no_ptr |
---|
| 2174 | | old_function_ptr |
---|
| 2175 | | old_function_array |
---|
| 2176 | ; |
---|
| 2177 | |
---|
| 2178 | old_function_no_ptr: |
---|
| 2179 | paren_identifier '(' identifier_list ')' /* function_declarator handles empty parameter */ |
---|
| 2180 | { $$ = $1->addIdList( $3 ); } |
---|
| 2181 | | '(' old_function_ptr ')' '(' identifier_list ')' |
---|
| 2182 | { $$ = $2->addIdList( $5 ); } |
---|
| 2183 | | '(' old_function_no_ptr ')' /* redundant parenthesis */ |
---|
| 2184 | { $$ = $2; } |
---|
| 2185 | ; |
---|
| 2186 | |
---|
| 2187 | old_function_ptr: |
---|
| 2188 | '*' old_function_declarator |
---|
| 2189 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2190 | | '*' type_qualifier_list old_function_declarator |
---|
| 2191 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2192 | | '(' old_function_ptr ')' |
---|
| 2193 | { $$ = $2; } |
---|
| 2194 | ; |
---|
| 2195 | |
---|
| 2196 | old_function_array: |
---|
| 2197 | '(' old_function_ptr ')' array_dimension |
---|
| 2198 | { $$ = $2->addArray( $4 ); } |
---|
| 2199 | | '(' old_function_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2200 | { $$ = $2->addArray( $4 ); } |
---|
| 2201 | | '(' old_function_array ')' /* redundant parenthesis */ |
---|
| 2202 | { $$ = $2; } |
---|
| 2203 | ; |
---|
| 2204 | |
---|
| 2205 | /* This pattern parses a declaration for a variable or function prototype that redefines a typedef name, e.g.: |
---|
| 2206 | |
---|
| 2207 | typedef int foo; |
---|
| 2208 | { |
---|
| 2209 | int foo; // redefine typedef name in new scope |
---|
| 2210 | } |
---|
| 2211 | |
---|
| 2212 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
| 2213 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
| 2214 | |
---|
| 2215 | typedef_redeclarator: |
---|
| 2216 | paren_typedef attribute_list_opt |
---|
| 2217 | | typedef_ptr |
---|
| 2218 | | typedef_array attribute_list_opt |
---|
| 2219 | | typedef_function attribute_list_opt |
---|
| 2220 | ; |
---|
| 2221 | |
---|
| 2222 | paren_typedef: |
---|
| 2223 | TYPEDEFname |
---|
| 2224 | { |
---|
| 2225 | typedefTable.setNextIdentifier( *($1) ); |
---|
| 2226 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2227 | } |
---|
| 2228 | | '(' paren_typedef ')' |
---|
| 2229 | { $$ = $2; } |
---|
| 2230 | ; |
---|
| 2231 | |
---|
| 2232 | typedef_ptr: |
---|
| 2233 | '*' typedef_redeclarator |
---|
| 2234 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2235 | | '*' type_qualifier_list typedef_redeclarator |
---|
| 2236 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2237 | | '(' typedef_ptr ')' |
---|
| 2238 | { $$ = $2; } |
---|
| 2239 | ; |
---|
| 2240 | |
---|
| 2241 | typedef_array: |
---|
| 2242 | paren_typedef array_dimension |
---|
| 2243 | { $$ = $1->addArray( $2 ); } |
---|
| 2244 | | '(' typedef_ptr ')' array_dimension |
---|
| 2245 | { $$ = $2->addArray( $4 ); } |
---|
| 2246 | | '(' typedef_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2247 | { $$ = $2->addArray( $4 ); } |
---|
| 2248 | | '(' typedef_array ')' /* redundant parenthesis */ |
---|
| 2249 | { $$ = $2; } |
---|
| 2250 | ; |
---|
| 2251 | |
---|
| 2252 | typedef_function: |
---|
| 2253 | paren_typedef '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2254 | { $$ = $1->addParamList( $4 ); } |
---|
| 2255 | | '(' typedef_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2256 | { $$ = $2->addParamList( $6 ); } |
---|
| 2257 | | '(' typedef_function ')' /* redundant parenthesis */ |
---|
| 2258 | { $$ = $2; } |
---|
| 2259 | ; |
---|
| 2260 | |
---|
| 2261 | /* This pattern parses a declaration for a parameter variable or function prototype that is not redefining a |
---|
[6c3744e] | 2262 | typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern |
---|
[51b7345] | 2263 | precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2264 | and functions versus pointers to arrays and functions. */ |
---|
| 2265 | |
---|
| 2266 | identifier_parameter_declarator: |
---|
| 2267 | paren_identifier attribute_list_opt |
---|
| 2268 | | identifier_parameter_ptr |
---|
| 2269 | | identifier_parameter_array attribute_list_opt |
---|
| 2270 | | identifier_parameter_function attribute_list_opt |
---|
| 2271 | ; |
---|
| 2272 | |
---|
| 2273 | identifier_parameter_ptr: |
---|
| 2274 | '*' identifier_parameter_declarator |
---|
| 2275 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2276 | | '*' type_qualifier_list identifier_parameter_declarator |
---|
| 2277 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2278 | | '(' identifier_parameter_ptr ')' |
---|
| 2279 | { $$ = $2; } |
---|
| 2280 | ; |
---|
| 2281 | |
---|
| 2282 | identifier_parameter_array: |
---|
| 2283 | paren_identifier array_parameter_dimension |
---|
| 2284 | { $$ = $1->addArray( $2 ); } |
---|
| 2285 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
| 2286 | { $$ = $2->addArray( $4 ); } |
---|
| 2287 | | '(' identifier_parameter_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2288 | { $$ = $2->addArray( $4 ); } |
---|
| 2289 | | '(' identifier_parameter_array ')' /* redundant parenthesis */ |
---|
| 2290 | { $$ = $2; } |
---|
| 2291 | ; |
---|
| 2292 | |
---|
| 2293 | identifier_parameter_function: |
---|
| 2294 | paren_identifier '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2295 | { $$ = $1->addParamList( $4 ); } |
---|
| 2296 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2297 | { $$ = $2->addParamList( $6 ); } |
---|
| 2298 | | '(' identifier_parameter_function ')' /* redundant parenthesis */ |
---|
| 2299 | { $$ = $2; } |
---|
| 2300 | ; |
---|
| 2301 | |
---|
| 2302 | /* This pattern parses a declaration for a parameter variable or function prototype that is redefining a |
---|
| 2303 | typedef name, e.g.: |
---|
| 2304 | |
---|
| 2305 | typedef int foo; |
---|
| 2306 | int f( int foo ); // redefine typedef name in new scope |
---|
| 2307 | |
---|
[6c3744e] | 2308 | and allows the C99 array options, which can only appear in a parameter list. In addition, the pattern |
---|
[51b7345] | 2309 | handles the special meaning of parenthesis around a typedef name: |
---|
| 2310 | |
---|
| 2311 | ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
| 2312 | parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
| 2313 | not as redundant parentheses around the identifier." |
---|
| 2314 | |
---|
| 2315 | which precludes the following cases: |
---|
| 2316 | |
---|
| 2317 | typedef float T; |
---|
| 2318 | int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
| 2319 | int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
| 2320 | int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
| 2321 | int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
| 2322 | |
---|
| 2323 | In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type |
---|
| 2324 | list, and not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes |
---|
| 2325 | declaring an array of functions versus a pointer to an array of functions, and returning arrays and |
---|
| 2326 | functions versus pointers to arrays and functions. */ |
---|
| 2327 | |
---|
| 2328 | typedef_parameter_redeclarator: |
---|
| 2329 | typedef attribute_list_opt |
---|
| 2330 | | typedef_parameter_ptr |
---|
| 2331 | | typedef_parameter_array attribute_list_opt |
---|
| 2332 | | typedef_parameter_function attribute_list_opt |
---|
| 2333 | ; |
---|
| 2334 | |
---|
| 2335 | typedef: |
---|
| 2336 | TYPEDEFname |
---|
| 2337 | { |
---|
| 2338 | typedefTable.setNextIdentifier( *($1) ); |
---|
| 2339 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2340 | } |
---|
| 2341 | ; |
---|
| 2342 | |
---|
| 2343 | typedef_parameter_ptr: |
---|
| 2344 | '*' typedef_parameter_redeclarator |
---|
| 2345 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2346 | | '*' type_qualifier_list typedef_parameter_redeclarator |
---|
| 2347 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2348 | | '(' typedef_parameter_ptr ')' |
---|
| 2349 | { $$ = $2; } |
---|
| 2350 | ; |
---|
| 2351 | |
---|
| 2352 | typedef_parameter_array: |
---|
| 2353 | typedef array_parameter_dimension |
---|
| 2354 | { $$ = $1->addArray( $2 ); } |
---|
| 2355 | | '(' typedef_parameter_ptr ')' array_parameter_dimension |
---|
| 2356 | { $$ = $2->addArray( $4 ); } |
---|
| 2357 | ; |
---|
| 2358 | |
---|
| 2359 | typedef_parameter_function: |
---|
| 2360 | typedef '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2361 | { $$ = $1->addParamList( $4 ); } |
---|
| 2362 | | '(' typedef_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2363 | { $$ = $2->addParamList( $6 ); } |
---|
| 2364 | ; |
---|
| 2365 | |
---|
| 2366 | /* This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no |
---|
| 2367 | identifier to which the type applies, e.g.: |
---|
| 2368 | |
---|
| 2369 | sizeof( int ); |
---|
| 2370 | sizeof( int [10] ); |
---|
| 2371 | |
---|
| 2372 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
| 2373 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
| 2374 | |
---|
| 2375 | abstract_declarator: |
---|
| 2376 | abstract_ptr |
---|
| 2377 | | abstract_array attribute_list_opt |
---|
| 2378 | | abstract_function attribute_list_opt |
---|
| 2379 | ; |
---|
| 2380 | |
---|
| 2381 | abstract_ptr: |
---|
| 2382 | '*' |
---|
| 2383 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2384 | | '*' type_qualifier_list |
---|
| 2385 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2386 | | '*' abstract_declarator |
---|
| 2387 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2388 | | '*' type_qualifier_list abstract_declarator |
---|
| 2389 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2390 | | '(' abstract_ptr ')' |
---|
| 2391 | { $$ = $2; } |
---|
| 2392 | ; |
---|
| 2393 | |
---|
| 2394 | abstract_array: |
---|
| 2395 | array_dimension |
---|
| 2396 | | '(' abstract_ptr ')' array_dimension |
---|
| 2397 | { $$ = $2->addArray( $4 ); } |
---|
| 2398 | | '(' abstract_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2399 | { $$ = $2->addArray( $4 ); } |
---|
| 2400 | | '(' abstract_array ')' /* redundant parenthesis */ |
---|
| 2401 | { $$ = $2; } |
---|
| 2402 | ; |
---|
| 2403 | |
---|
| 2404 | abstract_function: |
---|
| 2405 | '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2406 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2407 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2408 | { $$ = $2->addParamList( $6 ); } |
---|
| 2409 | | '(' abstract_function ')' /* redundant parenthesis */ |
---|
| 2410 | { $$ = $2; } |
---|
| 2411 | ; |
---|
| 2412 | |
---|
| 2413 | array_dimension: |
---|
| 2414 | /* Only the first dimension can be empty. */ |
---|
| 2415 | '[' push pop ']' |
---|
| 2416 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
| 2417 | | '[' push pop ']' multi_array_dimension |
---|
| 2418 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $5 ); } |
---|
| 2419 | | multi_array_dimension |
---|
| 2420 | ; |
---|
| 2421 | |
---|
| 2422 | multi_array_dimension: |
---|
| 2423 | '[' push assignment_expression pop ']' |
---|
| 2424 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
[6c3744e] | 2425 | | '[' push '*' pop ']' /* C99 */ |
---|
[51b7345] | 2426 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
| 2427 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
| 2428 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
[6c3744e] | 2429 | | multi_array_dimension '[' push '*' pop ']' /* C99 */ |
---|
[51b7345] | 2430 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
| 2431 | ; |
---|
| 2432 | |
---|
| 2433 | /* This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
| 2434 | identifier to which the type applies, e.g.: |
---|
| 2435 | |
---|
| 2436 | int f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2437 | int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
| 2438 | |
---|
| 2439 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
| 2440 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
| 2441 | |
---|
| 2442 | abstract_parameter_declarator: |
---|
| 2443 | abstract_parameter_ptr |
---|
| 2444 | | abstract_parameter_array attribute_list_opt |
---|
| 2445 | | abstract_parameter_function attribute_list_opt |
---|
| 2446 | ; |
---|
| 2447 | |
---|
| 2448 | abstract_parameter_ptr: |
---|
| 2449 | '*' |
---|
| 2450 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2451 | | '*' type_qualifier_list |
---|
| 2452 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2453 | | '*' abstract_parameter_declarator |
---|
| 2454 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2455 | | '*' type_qualifier_list abstract_parameter_declarator |
---|
| 2456 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2457 | | '(' abstract_parameter_ptr ')' |
---|
| 2458 | { $$ = $2; } |
---|
| 2459 | ; |
---|
| 2460 | |
---|
| 2461 | abstract_parameter_array: |
---|
| 2462 | array_parameter_dimension |
---|
| 2463 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
| 2464 | { $$ = $2->addArray( $4 ); } |
---|
| 2465 | | '(' abstract_parameter_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2466 | { $$ = $2->addArray( $4 ); } |
---|
| 2467 | | '(' abstract_parameter_array ')' /* redundant parenthesis */ |
---|
| 2468 | { $$ = $2; } |
---|
| 2469 | ; |
---|
| 2470 | |
---|
| 2471 | abstract_parameter_function: |
---|
| 2472 | '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2473 | { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); } |
---|
| 2474 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2475 | { $$ = $2->addParamList( $6 ); } |
---|
| 2476 | | '(' abstract_parameter_function ')' /* redundant parenthesis */ |
---|
| 2477 | { $$ = $2; } |
---|
| 2478 | ; |
---|
| 2479 | |
---|
| 2480 | array_parameter_dimension: |
---|
| 2481 | /* Only the first dimension can be empty or have qualifiers. */ |
---|
| 2482 | array_parameter_1st_dimension |
---|
| 2483 | | array_parameter_1st_dimension multi_array_dimension |
---|
| 2484 | { $$ = $1->addArray( $2 ); } |
---|
| 2485 | | multi_array_dimension |
---|
| 2486 | ; |
---|
| 2487 | |
---|
| 2488 | /* The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
| 2489 | |
---|
| 2490 | ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall |
---|
| 2491 | appear only in a declaration of a function parameter with an array type, and then only in the |
---|
[17cd4eb] | 2492 | outermost array type derivation." */ |
---|
[51b7345] | 2493 | |
---|
| 2494 | array_parameter_1st_dimension: |
---|
| 2495 | '[' push pop ']' |
---|
| 2496 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
[17cd4eb] | 2497 | // multi_array_dimension handles the '[' '*' ']' case |
---|
[6c3744e] | 2498 | | '[' push type_qualifier_list '*' pop ']' /* remaining C99 */ |
---|
[51b7345] | 2499 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
[17cd4eb] | 2500 | | '[' push type_qualifier_list pop ']' |
---|
| 2501 | { $$ = DeclarationNode::newArray( 0, $3, false ); } |
---|
| 2502 | // multi_array_dimension handles the '[' assignment_expression ']' case |
---|
[51b7345] | 2503 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2504 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
[17cd4eb] | 2505 | | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']' |
---|
[51b7345] | 2506 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
[17cd4eb] | 2507 | | '[' push type_qualifier_list STATIC assignment_expression pop ']' |
---|
| 2508 | { $$ = DeclarationNode::newArray( $5, $3, true ); } |
---|
[51b7345] | 2509 | ; |
---|
| 2510 | |
---|
| 2511 | /* This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type |
---|
| 2512 | applies, e.g.: |
---|
| 2513 | |
---|
| 2514 | sizeof( int ); // abstract variable; no identifier name specified |
---|
| 2515 | |
---|
| 2516 | The pattern precludes declaring an array of functions versus a pointer to an array of functions, and |
---|
| 2517 | returning arrays and functions versus pointers to arrays and functions. */ |
---|
| 2518 | |
---|
| 2519 | variable_abstract_declarator: |
---|
| 2520 | variable_abstract_ptr |
---|
| 2521 | | variable_abstract_array attribute_list_opt |
---|
| 2522 | | variable_abstract_function attribute_list_opt |
---|
| 2523 | ; |
---|
| 2524 | |
---|
| 2525 | variable_abstract_ptr: |
---|
| 2526 | '*' |
---|
| 2527 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
| 2528 | | '*' type_qualifier_list |
---|
| 2529 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
| 2530 | | '*' variable_abstract_declarator |
---|
| 2531 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2532 | | '*' type_qualifier_list variable_abstract_declarator |
---|
| 2533 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2534 | | '(' variable_abstract_ptr ')' |
---|
| 2535 | { $$ = $2; } |
---|
| 2536 | ; |
---|
| 2537 | |
---|
| 2538 | variable_abstract_array: |
---|
| 2539 | array_dimension |
---|
| 2540 | | '(' variable_abstract_ptr ')' array_dimension |
---|
| 2541 | { $$ = $2->addArray( $4 ); } |
---|
| 2542 | | '(' variable_abstract_array ')' multi_array_dimension /* redundant parenthesis */ |
---|
| 2543 | { $$ = $2->addArray( $4 ); } |
---|
| 2544 | | '(' variable_abstract_array ')' /* redundant parenthesis */ |
---|
| 2545 | { $$ = $2; } |
---|
| 2546 | ; |
---|
| 2547 | |
---|
| 2548 | variable_abstract_function: |
---|
| 2549 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */ |
---|
| 2550 | { $$ = $2->addParamList( $6 ); } |
---|
| 2551 | | '(' variable_abstract_function ')' /* redundant parenthesis */ |
---|
| 2552 | { $$ = $2; } |
---|
| 2553 | ; |
---|
| 2554 | |
---|
| 2555 | /* This pattern parses a new-style declaration for a parameter variable or function prototype that is either |
---|
[6c3744e] | 2556 | an identifier or typedef name and allows the C99 array options, which can only appear in a parameter |
---|
[51b7345] | 2557 | list. */ |
---|
| 2558 | |
---|
| 2559 | new_identifier_parameter_declarator_tuple: /* CFA */ |
---|
| 2560 | new_identifier_parameter_declarator_no_tuple |
---|
| 2561 | | new_abstract_tuple |
---|
| 2562 | | type_qualifier_list new_abstract_tuple |
---|
| 2563 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2564 | ; |
---|
| 2565 | |
---|
| 2566 | new_identifier_parameter_declarator_no_tuple: /* CFA */ |
---|
| 2567 | new_identifier_parameter_ptr |
---|
| 2568 | | new_identifier_parameter_array |
---|
| 2569 | ; |
---|
| 2570 | |
---|
| 2571 | new_identifier_parameter_ptr: /* CFA */ |
---|
| 2572 | '*' type_specifier |
---|
| 2573 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2574 | | type_qualifier_list '*' type_specifier |
---|
| 2575 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2576 | | '*' new_abstract_function |
---|
| 2577 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2578 | | type_qualifier_list '*' new_abstract_function |
---|
| 2579 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2580 | | '*' new_identifier_parameter_declarator_tuple |
---|
| 2581 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2582 | | type_qualifier_list '*' new_identifier_parameter_declarator_tuple |
---|
| 2583 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2584 | ; |
---|
| 2585 | |
---|
| 2586 | new_identifier_parameter_array: /* CFA */ |
---|
| 2587 | /* Only the first dimension can be empty or have qualifiers. Empty dimension must be factored |
---|
| 2588 | out due to shift/reduce conflict with new-style empty (void) function return type. */ |
---|
| 2589 | '[' push pop ']' type_specifier |
---|
| 2590 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2591 | | new_array_parameter_1st_dimension type_specifier |
---|
| 2592 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2593 | | '[' push pop ']' multi_array_dimension type_specifier |
---|
| 2594 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2595 | | new_array_parameter_1st_dimension multi_array_dimension type_specifier |
---|
| 2596 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2597 | | multi_array_dimension type_specifier |
---|
| 2598 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2599 | | '[' push pop ']' new_identifier_parameter_ptr |
---|
| 2600 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2601 | | new_array_parameter_1st_dimension new_identifier_parameter_ptr |
---|
| 2602 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2603 | | '[' push pop ']' multi_array_dimension new_identifier_parameter_ptr |
---|
| 2604 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2605 | | new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr |
---|
| 2606 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
| 2607 | | multi_array_dimension new_identifier_parameter_ptr |
---|
| 2608 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2609 | ; |
---|
| 2610 | |
---|
| 2611 | new_array_parameter_1st_dimension: |
---|
[6c3744e] | 2612 | '[' push type_qualifier_list '*' pop ']' /* remaining C99 */ |
---|
[51b7345] | 2613 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2614 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2615 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2616 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
| 2617 | /* declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
| 2618 | assignment_expression, so a semantic check is necessary to preclude them as a |
---|
| 2619 | type_qualifier cannot appear in this context. */ |
---|
| 2620 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
| 2621 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
| 2622 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
| 2623 | ; |
---|
| 2624 | |
---|
| 2625 | /* This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is |
---|
| 2626 | no identifier to which the type applies, e.g.: |
---|
| 2627 | |
---|
| 2628 | [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2629 | [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
| 2630 | |
---|
| 2631 | These rules need LR(3): |
---|
| 2632 | |
---|
| 2633 | new_abstract_tuple identifier_or_typedef_name |
---|
| 2634 | '[' new_parameter_list ']' identifier_or_typedef_name '(' new_parameter_type_list_opt ')' |
---|
| 2635 | |
---|
| 2636 | since a function return type can be syntactically identical to a tuple type: |
---|
| 2637 | |
---|
| 2638 | [int, int] t; |
---|
| 2639 | [int, int] f( int ); |
---|
| 2640 | |
---|
| 2641 | Therefore, it is necessary to look at the token after identifier_or_typedef_name to know when to reduce |
---|
| 2642 | new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow |
---|
| 2643 | the necessary lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and |
---|
| 2644 | tuple declarations are duplicated when appearing with new_function_specifier. */ |
---|
| 2645 | |
---|
| 2646 | new_abstract_declarator_tuple: /* CFA */ |
---|
| 2647 | new_abstract_tuple |
---|
| 2648 | | type_qualifier_list new_abstract_tuple |
---|
| 2649 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2650 | | new_abstract_declarator_no_tuple |
---|
| 2651 | ; |
---|
| 2652 | |
---|
| 2653 | new_abstract_declarator_no_tuple: /* CFA */ |
---|
| 2654 | new_abstract_ptr |
---|
| 2655 | | new_abstract_array |
---|
| 2656 | ; |
---|
| 2657 | |
---|
| 2658 | new_abstract_ptr: /* CFA */ |
---|
| 2659 | '*' type_specifier |
---|
| 2660 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2661 | | type_qualifier_list '*' type_specifier |
---|
| 2662 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2663 | | '*' new_abstract_function |
---|
| 2664 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2665 | | type_qualifier_list '*' new_abstract_function |
---|
| 2666 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2667 | | '*' new_abstract_declarator_tuple |
---|
| 2668 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
| 2669 | | type_qualifier_list '*' new_abstract_declarator_tuple |
---|
| 2670 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2671 | ; |
---|
| 2672 | |
---|
| 2673 | new_abstract_array: /* CFA */ |
---|
| 2674 | /* Only the first dimension can be empty. Empty dimension must be factored out due to |
---|
| 2675 | shift/reduce conflict with empty (void) function return type. */ |
---|
| 2676 | '[' push pop ']' type_specifier |
---|
| 2677 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2678 | | '[' push pop ']' multi_array_dimension type_specifier |
---|
| 2679 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2680 | | multi_array_dimension type_specifier |
---|
| 2681 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2682 | | '[' push pop ']' new_abstract_ptr |
---|
| 2683 | { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2684 | | '[' push pop ']' multi_array_dimension new_abstract_ptr |
---|
| 2685 | { $$ = $6->addNewArray( $5 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
| 2686 | | multi_array_dimension new_abstract_ptr |
---|
| 2687 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2688 | ; |
---|
| 2689 | |
---|
| 2690 | new_abstract_tuple: /* CFA */ |
---|
| 2691 | '[' push new_abstract_parameter_list pop ']' |
---|
| 2692 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 2693 | ; |
---|
| 2694 | |
---|
| 2695 | new_abstract_function: /* CFA */ |
---|
| 2696 | '[' push pop ']' '(' new_parameter_type_list_opt ')' |
---|
| 2697 | { $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $6, 0 ); } |
---|
| 2698 | | new_abstract_tuple '(' push new_parameter_type_list_opt pop ')' |
---|
| 2699 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2700 | | new_function_return '(' push new_parameter_type_list_opt pop ')' |
---|
| 2701 | { $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); } |
---|
| 2702 | ; |
---|
| 2703 | |
---|
| 2704 | /* 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration |
---|
| 2705 | specifiers in each declaration, and in the specifier-qualifier list in each structure declaration and |
---|
| 2706 | type name." |
---|
| 2707 | |
---|
| 2708 | 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the |
---|
| 2709 | beginning of the declaration specifiers in a declaration is an obsolescent feature." |
---|
| 2710 | |
---|
| 2711 | 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
---|
| 2712 | prototype-format parameter type declarators) is an obsolescent feature." |
---|
| 2713 | |
---|
| 2714 | 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter |
---|
| 2715 | identifier and declaration lists (not prototype-format parameter type and identifier declarators) is |
---|
| 2716 | an obsolescent feature." */ |
---|
| 2717 | |
---|
| 2718 | /************************* MISCELLANEOUS ********************************/ |
---|
| 2719 | |
---|
| 2720 | comma_opt: /* redundant comma */ |
---|
| 2721 | /* empty */ |
---|
| 2722 | | ',' |
---|
| 2723 | ; |
---|
| 2724 | |
---|
| 2725 | assignment_opt: |
---|
| 2726 | /* empty */ |
---|
| 2727 | { $$ = 0; } |
---|
| 2728 | | '=' assignment_expression |
---|
| 2729 | { $$ = $2; } |
---|
| 2730 | ; |
---|
| 2731 | |
---|
| 2732 | %% |
---|
| 2733 | /* ----end of grammar----*/ |
---|
| 2734 | |
---|
[3848e0e] | 2735 | void yyerror( char *string ) { |
---|
[51b7345] | 2736 | using std::cout; |
---|
| 2737 | using std::endl; |
---|
[3848e0e] | 2738 | cout << "Error "; |
---|
| 2739 | if ( yyfilename ) { |
---|
| 2740 | cout << "in file " << yyfilename << " "; |
---|
[51b7345] | 2741 | } |
---|
[3848e0e] | 2742 | cout << "at line " << yylineno << " reading token \"" << *(yylval.tok.str) << "\"" << endl; |
---|
[51b7345] | 2743 | } |
---|
| 2744 | |
---|
| 2745 | /* Local Variables: */ |
---|
| 2746 | /* fill-column: 110 */ |
---|
[134b86a] | 2747 | /* compile-command: "make install" */ |
---|
[51b7345] | 2748 | /* End: */ |
---|