[b87a5ed] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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[974906e2] | 7 | // cfa.y -- |
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| 8 | // |
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[c11e31c] | 9 | // Author : Peter A. Buhr |
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| 10 | // Created On : Sat Sep 1 20:22:55 2001 |
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| 11 | // Last Modified By : Peter A. Buhr |
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[fbcde64] | 12 | // Last Modified On : Thu Mar 30 15:42:32 2017 |
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| 13 | // Update Count : 2318 |
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[974906e2] | 14 | // |
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[c11e31c] | 15 | |
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[de62360d] | 16 | // This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C |
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| 17 | // grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts have been |
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| 18 | // copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar. |
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| 19 | // In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax |
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| 20 | // that must be subsequently rejected by semantic checks. Nevertheless, there are still several semantic checks |
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| 21 | // required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions. |
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[c11e31c] | 22 | |
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[de62360d] | 23 | // Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with |
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| 24 | // the grammar. |
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[c11e31c] | 25 | |
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| 26 | // The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for: |
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| 27 | // |
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| 28 | // 1. designation with '=' (use ':' instead) |
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| 29 | // |
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[de62360d] | 30 | // Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar also has |
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| 31 | // two levels of extensions. The first extensions cover most of the GCC C extensions, except for: |
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[c11e31c] | 32 | // |
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[e7aed49] | 33 | // 1. designation with and without '=' (use ':' instead) |
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[c0aa336] | 34 | // 2. attributes not allowed in parenthesis of declarator |
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[c11e31c] | 35 | // |
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[de62360d] | 36 | // All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall |
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| 37 | // (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the |
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| 38 | // syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable |
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| 39 | // parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation" |
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| 40 | // grammar rule. |
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[51b7345] | 41 | |
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| 42 | %{ |
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[b87a5ed] | 43 | #define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time |
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| 44 | #define YYDEBUG 1 // get the pretty debugging code to compile |
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[51b7345] | 45 | |
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| 46 | #undef __GNUC_MINOR__ |
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| 47 | |
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| 48 | #include <cstdio> |
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| 49 | #include <stack> |
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| 50 | #include "lex.h" |
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[984dce6] | 51 | #include "parser.h" |
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[51b7345] | 52 | #include "ParseNode.h" |
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[984dce6] | 53 | #include "TypedefTable.h" |
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[1db21619] | 54 | #include "TypeData.h" |
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[51b7345] | 55 | #include "LinkageSpec.h" |
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[2298f728] | 56 | using namespace std; |
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[51b7345] | 57 | |
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[cbaee0d] | 58 | extern DeclarationNode * parseTree; |
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[8b7ee09] | 59 | extern LinkageSpec::Spec linkage; |
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[0da3e2c] | 60 | extern TypedefTable typedefTable; |
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| 61 | |
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[2298f728] | 62 | stack< LinkageSpec::Spec > linkageStack; |
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[7bf7fb9] | 63 | |
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[2298f728] | 64 | void appendStr( string *to, string *from ) { |
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[7bf7fb9] | 65 | // "abc" "def" "ghi" => "abcdefghi", remove new text from quotes and insert before last quote in old string. |
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[ab57786] | 66 | to->insert( to->length() - 1, from->substr( 1, from->length() - 2 ) ); |
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[7bf7fb9] | 67 | } // appendStr |
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[c0aa336] | 68 | |
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| 69 | DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) { |
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| 70 | // distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__. |
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| 71 | DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier ); |
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| 72 | //cur->addType( specifier ); |
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| 73 | for ( cur = dynamic_cast< DeclarationNode * >( cur->get_next() ); cur != nullptr; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) { |
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| 74 | cl->cloneBaseType( cur ); |
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| 75 | } // for |
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| 76 | declList->addType( cl ); |
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| 77 | // delete cl; |
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| 78 | return declList; |
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| 79 | } // distAttr |
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| 80 | |
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| 81 | void distExt( DeclarationNode * declaration ) { |
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| 82 | // distribute EXTENSION across all declarations |
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| 83 | for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) { |
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| 84 | iter->set_extension( true ); |
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| 85 | } // for |
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| 86 | } // distExt |
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[51b7345] | 87 | %} |
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| 88 | |
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[c11e31c] | 89 | //************************* TERMINAL TOKENS ******************************** |
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[51b7345] | 90 | |
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[c11e31c] | 91 | // keywords |
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[51b7345] | 92 | %token TYPEDEF |
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[a7c90d4] | 93 | %token EXTERN STATIC AUTO REGISTER |
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| 94 | %token THREADLOCAL // C11 |
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| 95 | %token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1) |
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| 96 | %token NORETURN // C11 |
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[51b7345] | 97 | %token CONST VOLATILE |
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[b87a5ed] | 98 | %token RESTRICT // C99 |
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[a7c90d4] | 99 | %token ATOMIC // C11 |
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| 100 | %token FORALL LVALUE MUTEX // CFA |
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[3a2128f] | 101 | %token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED ZERO_T ONE_T |
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[90c3b1c] | 102 | %token VALIST // GCC |
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[b87a5ed] | 103 | %token BOOL COMPLEX IMAGINARY // C99 |
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| 104 | %token TYPEOF LABEL // GCC |
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[51b7345] | 105 | %token ENUM STRUCT UNION |
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[d3bc0ad] | 106 | %token COROUTINE MONITOR THREAD // CFA |
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[a7c90d4] | 107 | %token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA |
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[5721a6d] | 108 | %token SIZEOF OFFSETOF |
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[b87a5ed] | 109 | %token ATTRIBUTE EXTENSION // GCC |
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[51b7345] | 110 | %token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN |
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[02e5ab6] | 111 | %token CHOOSE DISABLE ENABLE FALLTHRU TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT // CFA |
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[b87a5ed] | 112 | %token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1) |
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[a7c90d4] | 113 | %token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11 |
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[51b7345] | 114 | |
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[c11e31c] | 115 | // names and constants: lexer differentiates between identifier and typedef names |
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[b87a5ed] | 116 | %token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname |
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| 117 | %token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname |
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[1b29996] | 118 | %token<tok> INTEGERconstant CHARACTERconstant STRINGliteral |
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| 119 | // Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and |
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| 120 | // overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically |
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| 121 | // converted into the tuple index (.)(1). e.g., 3.x |
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| 122 | %token<tok> REALDECIMALconstant REALFRACTIONconstant FLOATINGconstant |
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[b87a5ed] | 123 | %token<tok> ZERO ONE // CFA |
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[51b7345] | 124 | |
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[c11e31c] | 125 | // multi-character operators |
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[b87a5ed] | 126 | %token ARROW // -> |
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| 127 | %token ICR DECR // ++ -- |
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| 128 | %token LS RS // << >> |
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| 129 | %token LE GE EQ NE // <= >= == != |
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| 130 | %token ANDAND OROR // && || |
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| 131 | %token ELLIPSIS // ... |
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| 132 | |
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| 133 | %token MULTassign DIVassign MODassign // *= /= %=/ |
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| 134 | %token PLUSassign MINUSassign // += -= |
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| 135 | %token LSassign RSassign // <<= >>= |
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| 136 | %token ANDassign ERassign ORassign // &= ^= |= |
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[51b7345] | 137 | |
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[e7aed49] | 138 | %token ATassign // @= |
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[097e2b0] | 139 | |
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[c11e31c] | 140 | // Types declaration |
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[51b7345] | 141 | %union |
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| 142 | { |
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[b87a5ed] | 143 | Token tok; |
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[c0aa336] | 144 | ParseNode * pn; |
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| 145 | ExpressionNode * en; |
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| 146 | DeclarationNode * decl; |
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[68cd1ce] | 147 | DeclarationNode::Aggregate aggKey; |
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[b87a5ed] | 148 | DeclarationNode::TypeClass tclass; |
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[c0aa336] | 149 | StatementNode * sn; |
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| 150 | ConstantExpr * constant; |
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| 151 | ForCtl * fctl; |
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| 152 | LabelNode * label; |
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| 153 | InitializerNode * in; |
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[d9e2280] | 154 | OperKinds op; |
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[c0aa336] | 155 | std::string * str; |
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[7f5566b] | 156 | bool flag; |
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[51b7345] | 157 | } |
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| 158 | |
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[097e2b0] | 159 | %type<tok> identifier no_01_identifier no_attr_identifier zero_one |
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[44a81853] | 160 | %type<tok> identifier_or_type_name no_attr_identifier_or_type_name no_01_identifier_or_type_name attr_name |
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[ab57786] | 161 | %type<constant> string_literal |
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| 162 | %type<str> string_literal_list |
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[51b7345] | 163 | |
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[c11e31c] | 164 | // expressions |
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[d1625f8] | 165 | %type<en> constant |
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[b87a5ed] | 166 | %type<en> tuple tuple_expression_list |
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[9706554] | 167 | %type<op> ptrref_operator unary_operator assignment_operator |
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[b87a5ed] | 168 | %type<en> primary_expression postfix_expression unary_expression |
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| 169 | %type<en> cast_expression multiplicative_expression additive_expression shift_expression |
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| 170 | %type<en> relational_expression equality_expression AND_expression exclusive_OR_expression |
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| 171 | %type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression |
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| 172 | %type<en> constant_expression assignment_expression assignment_expression_opt |
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| 173 | %type<en> comma_expression comma_expression_opt |
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[2f22cc4] | 174 | %type<en> argument_expression_list argument_expression assignment_opt |
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| 175 | %type<fctl> for_control_expression |
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[51b7345] | 176 | %type<en> subrange |
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[c0aa336] | 177 | %type<decl> asm_name_opt |
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[7f5566b] | 178 | %type<en> asm_operands_opt asm_operands_list asm_operand |
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| 179 | %type<label> label_list |
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[d1625f8] | 180 | %type<en> asm_clobbers_list_opt |
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[7f5566b] | 181 | %type<flag> asm_volatile_opt |
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[51b7345] | 182 | |
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[c11e31c] | 183 | // statements |
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[b87a5ed] | 184 | %type<sn> labeled_statement compound_statement expression_statement selection_statement |
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[097e2b0] | 185 | %type<sn> iteration_statement jump_statement exception_statement asm_statement |
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[b87a5ed] | 186 | %type<sn> fall_through_opt fall_through |
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| 187 | %type<sn> statement statement_list |
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| 188 | %type<sn> block_item_list block_item |
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[51b7345] | 189 | %type<sn> case_clause |
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[8688ce1] | 190 | %type<en> case_value |
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| 191 | %type<sn> case_value_list case_label case_label_list |
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[b87a5ed] | 192 | %type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list |
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[1d4580a] | 193 | %type<sn> handler_list handler_clause finally_clause |
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[51b7345] | 194 | |
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[c11e31c] | 195 | // declarations |
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[c0aa336] | 196 | %type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension |
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| 197 | %type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension |
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| 198 | %type<decl> abstract_parameter_declaration |
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[51b7345] | 199 | |
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| 200 | %type<aggKey> aggregate_key |
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[d0ffed1] | 201 | %type<decl> aggregate_type aggregate_type_nobody |
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[51b7345] | 202 | |
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| 203 | %type<decl> assertion assertion_list_opt |
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| 204 | |
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| 205 | %type<en> bit_subrange_size_opt bit_subrange_size |
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| 206 | |
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| 207 | %type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name |
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| 208 | |
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[4040425] | 209 | %type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier |
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[51b7345] | 210 | |
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| 211 | %type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list |
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[d0ffed1] | 212 | %type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list |
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[51b7345] | 213 | |
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[d0ffed1] | 214 | %type<decl> elaborated_type elaborated_type_nobody |
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[51b7345] | 215 | |
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[d0ffed1] | 216 | %type<decl> enumerator_list enum_type enum_type_nobody |
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[51b7345] | 217 | %type<en> enumerator_value_opt |
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| 218 | |
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| 219 | %type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt |
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| 220 | |
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| 221 | %type<decl> field_declaration field_declaration_list field_declarator field_declaring_list |
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[8780e30] | 222 | %type<en> field field_list field_name fraction_constants |
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[51b7345] | 223 | |
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[4d51835] | 224 | %type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr |
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[51b7345] | 225 | |
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[d3bc0ad] | 226 | %type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function |
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| 227 | %type<decl> identifier_list |
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[51b7345] | 228 | |
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[c0aa336] | 229 | %type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple |
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| 230 | %type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list |
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| 231 | %type<decl> cfa_abstract_ptr cfa_abstract_tuple |
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[51b7345] | 232 | |
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[c0aa336] | 233 | %type<decl> cfa_array_parameter_1st_dimension |
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[51b7345] | 234 | |
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[c0aa336] | 235 | %type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list |
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| 236 | %type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier |
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[51b7345] | 237 | |
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[c0aa336] | 238 | %type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple |
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| 239 | %type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr |
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[51b7345] | 240 | |
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[c0aa336] | 241 | %type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_type_list cfa_parameter_type_list_opt |
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[51b7345] | 242 | |
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[c0aa336] | 243 | %type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier |
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[51b7345] | 244 | |
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[c0aa336] | 245 | %type<decl> c_declaration |
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| 246 | %type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array |
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| 247 | %type<decl> KR_declaration_list KR_declaration_list_opt |
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[51b7345] | 248 | |
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| 249 | %type<decl> parameter_declaration parameter_list parameter_type_list |
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| 250 | %type<decl> parameter_type_list_opt |
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| 251 | |
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[2871210] | 252 | %type<decl> paren_identifier paren_type |
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[51b7345] | 253 | |
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[0da3e2c] | 254 | %type<decl> storage_class storage_class_list |
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[51b7345] | 255 | |
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[d0ffed1] | 256 | %type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody |
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[51b7345] | 257 | |
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| 258 | %type<tclass> type_class |
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| 259 | %type<decl> type_declarator type_declarator_name type_declaring_list |
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| 260 | |
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[c0aa336] | 261 | %type<decl> typedef typedef_type_specifier typedef_declaration typedef_declaration_specifier typedef_expression |
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| 262 | |
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| 263 | %type<decl> variable_type_redeclarator type_ptr type_array type_function |
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| 264 | |
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| 265 | %type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function |
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[2871210] | 266 | %type<decl> typegen_declaration_specifier typegen_type_specifier typegen_name |
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[51b7345] | 267 | |
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| 268 | %type<decl> type_name type_name_no_function |
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| 269 | %type<decl> type_parameter type_parameter_list |
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| 270 | |
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| 271 | %type<en> type_name_list |
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| 272 | |
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[d3bc0ad] | 273 | %type<decl> type_qualifier type_qualifier_name type_qualifier_list_opt type_qualifier_list |
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| 274 | %type<decl> type_specifier type_specifier_nobody |
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[51b7345] | 275 | |
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[c0aa336] | 276 | %type<decl> variable_declarator variable_ptr variable_array variable_function |
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| 277 | %type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function |
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[51b7345] | 278 | |
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[44a81853] | 279 | %type<decl> attribute_list_opt attribute_list attribute_name_list attribute attribute_name |
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[1db21619] | 280 | |
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[c11e31c] | 281 | // initializers |
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[51b7345] | 282 | %type<in> initializer initializer_list initializer_opt |
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| 283 | |
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[c11e31c] | 284 | // designators |
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[51b7345] | 285 | %type<en> designator designator_list designation |
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| 286 | |
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| 287 | |
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[b87a5ed] | 288 | // Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string |
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| 289 | // is ambiguous: |
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| 290 | // .---------. matches IF '(' comma_expression ')' statement |
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[c11e31c] | 291 | // if ( C ) S1 else S2 |
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[b87a5ed] | 292 | // `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */ |
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[51b7345] | 293 | |
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[c11e31c] | 294 | %nonassoc THEN // rule precedence for IF '(' comma_expression ')' statement |
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| 295 | %nonassoc ELSE // token precedence for start of else clause in IF statement |
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[51b7345] | 296 | |
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[b87a5ed] | 297 | %start translation_unit // parse-tree root |
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[51b7345] | 298 | |
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| 299 | %% |
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[c11e31c] | 300 | //************************* Namespace Management ******************************** |
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| 301 | |
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[de62360d] | 302 | // The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols |
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| 303 | // "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free |
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| 304 | // grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this |
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| 305 | // grammar uses the ANSI style. |
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[c11e31c] | 306 | // |
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[de62360d] | 307 | // Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those |
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[9059213] | 308 | // introduced through "forall" qualifiers), and by introducing "type generators" -- parameterized types. This latter |
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[de62360d] | 309 | // type name creates a third class of identifiers that must be distinguished by the scanner. |
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[c11e31c] | 310 | // |
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[de62360d] | 311 | // Since the scanner cannot distinguish among the different classes of identifiers without some context information, it |
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[9059213] | 312 | // accesses a data structure (TypedefTable) to allow classification of an identifier that it has just read. Semantic |
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| 313 | // actions during the parser update this data structure when the class of identifiers change. |
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[c11e31c] | 314 | // |
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[de62360d] | 315 | // Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a |
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| 316 | // local scope; it must revert to its original class at the end of the block. Since type names can be local to a |
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| 317 | // particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are |
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| 318 | // local to the current declaration scope and those that persist past the end of the declaration (i.e., names defined in |
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[9059213] | 319 | // "typedef" or "otype" declarations). |
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[c11e31c] | 320 | // |
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[de62360d] | 321 | // The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and closing of |
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| 322 | // scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur |
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| 323 | // within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point |
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| 324 | // of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have |
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| 325 | // enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra |
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| 326 | // rules is to open a new scope unconditionally. As the grammar evolves, it may be neccesary to add or move around |
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| 327 | // "push" and "pop" nonterminals to resolve conflicts of this sort. |
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[51b7345] | 328 | |
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| 329 | push: |
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[ab57786] | 330 | { typedefTable.enterScope(); } |
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[4d51835] | 331 | ; |
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[51b7345] | 332 | |
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| 333 | pop: |
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[ab57786] | 334 | { typedefTable.leaveScope(); } |
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[4d51835] | 335 | ; |
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[51b7345] | 336 | |
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[c11e31c] | 337 | //************************* CONSTANTS ******************************** |
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[51b7345] | 338 | |
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| 339 | constant: |
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[de62360d] | 340 | // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant". |
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[ab57786] | 341 | INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); } |
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[1b29996] | 342 | | REALDECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); } |
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| 343 | | REALFRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); } |
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[ab57786] | 344 | | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); } |
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| 345 | | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); } |
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[4d51835] | 346 | ; |
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[51b7345] | 347 | |
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| 348 | identifier: |
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[4d51835] | 349 | IDENTIFIER |
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| 350 | | ATTR_IDENTIFIER // CFA |
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| 351 | | zero_one // CFA |
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| 352 | ; |
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[51b7345] | 353 | |
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| 354 | no_01_identifier: |
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[4d51835] | 355 | IDENTIFIER |
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| 356 | | ATTR_IDENTIFIER // CFA |
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| 357 | ; |
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[51b7345] | 358 | |
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| 359 | no_attr_identifier: |
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[4d51835] | 360 | IDENTIFIER |
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[bd85400] | 361 | | zero_one // CFA |
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[4d51835] | 362 | ; |
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[51b7345] | 363 | |
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[b87a5ed] | 364 | zero_one: // CFA |
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[4d51835] | 365 | ZERO |
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| 366 | | ONE |
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| 367 | ; |
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[51b7345] | 368 | |
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[ab57786] | 369 | string_literal: |
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| 370 | string_literal_list { $$ = build_constantStr( *$1 ); } |
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| 371 | ; |
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| 372 | |
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[b87a5ed] | 373 | string_literal_list: // juxtaposed strings are concatenated |
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[ab57786] | 374 | STRINGliteral { $$ = $1; } // conversion from tok to str |
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[7bf7fb9] | 375 | | string_literal_list STRINGliteral |
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| 376 | { |
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[ab57786] | 377 | appendStr( $1, $2 ); // append 2nd juxtaposed string to 1st |
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[7bf7fb9] | 378 | delete $2; // allocated by lexer |
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[ab57786] | 379 | $$ = $1; // conversion from tok to str |
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[7bf7fb9] | 380 | } |
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[4d51835] | 381 | ; |
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[51b7345] | 382 | |
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[c11e31c] | 383 | //************************* EXPRESSIONS ******************************** |
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[51b7345] | 384 | |
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| 385 | primary_expression: |
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[4d51835] | 386 | IDENTIFIER // typedef name cannot be used as a variable name |
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[d1625f8] | 387 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
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[4d51835] | 388 | | zero_one |
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[4cb935e] | 389 | { $$ = new ExpressionNode( build_constantZeroOne( *$1 ) ); } |
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[1b29996] | 390 | | tuple |
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[4d51835] | 391 | | '(' comma_expression ')' |
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| 392 | { $$ = $2; } |
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| 393 | | '(' compound_statement ')' // GCC, lambda expression |
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[1b77274] | 394 | { $$ = new ExpressionNode( build_valexpr( $2 ) ); } |
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[ecb27a7] | 395 | | primary_expression '{' argument_expression_list '}' // CFA |
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| 396 | { |
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| 397 | Token fn; |
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| 398 | fn.str = new std::string( "?{}" ); // location undefined - use location of '{'? |
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| 399 | $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) ); |
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| 400 | } |
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[4d51835] | 401 | ; |
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[51b7345] | 402 | |
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| 403 | postfix_expression: |
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[4d51835] | 404 | primary_expression |
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| 405 | | postfix_expression '[' push assignment_expression pop ']' |
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[c6b1105] | 406 | // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a |
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[de62360d] | 407 | // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be |
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| 408 | // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is |
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| 409 | // equivalent to the old x[i,j]. |
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[d1625f8] | 410 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $4 ) ); } |
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[4d51835] | 411 | | postfix_expression '(' argument_expression_list ')' |
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[d1625f8] | 412 | { $$ = new ExpressionNode( build_func( $1, $3 ) ); } |
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[4d51835] | 413 | | postfix_expression '.' no_attr_identifier |
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[d1625f8] | 414 | { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); } |
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[4d51835] | 415 | | postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector |
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[3b58d91] | 416 | { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $5 ) ) ); } |
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[1b29996] | 417 | | postfix_expression REALFRACTIONconstant // CFA, tuple index |
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[8780e30] | 418 | { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_REALFRACTIONconstant( *$2 ) ) ); } |
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[4d51835] | 419 | | postfix_expression ARROW no_attr_identifier |
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[861799c] | 420 | { |
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| 421 | $$ = new ExpressionNode( build_pfieldSel( $1, *$3 == "0" || *$3 == "1" ? build_constantInteger( *$3 ) : build_varref( $3 ) ) ); |
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| 422 | } |
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[4d51835] | 423 | | postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector |
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[3b58d91] | 424 | { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $5 ) ) ); } |
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[861799c] | 425 | | postfix_expression ARROW INTEGERconstant // CFA, tuple index |
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| 426 | { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); } |
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[4d51835] | 427 | | postfix_expression ICR |
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[d1625f8] | 428 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); } |
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[4d51835] | 429 | | postfix_expression DECR |
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[d1625f8] | 430 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); } |
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[fbcde64] | 431 | | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99, compound-literal |
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[d1625f8] | 432 | { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); } |
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[ecb27a7] | 433 | | '^' primary_expression '{' argument_expression_list '}' // CFA |
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[097e2b0] | 434 | { |
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[9706554] | 435 | Token fn; |
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[ecb27a7] | 436 | fn.str = new string( "^?{}" ); // location undefined |
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| 437 | $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) ); |
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[097e2b0] | 438 | } |
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[4d51835] | 439 | ; |
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[51b7345] | 440 | |
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| 441 | argument_expression_list: |
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[4d51835] | 442 | argument_expression |
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| 443 | | argument_expression_list ',' argument_expression |
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[1d4580a] | 444 | { $$ = (ExpressionNode *)( $1->set_last( $3 )); } |
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[4d51835] | 445 | ; |
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[51b7345] | 446 | |
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| 447 | argument_expression: |
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[4d51835] | 448 | // empty |
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[738e304] | 449 | { $$ = nullptr; } |
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| 450 | // | '@' // use default argument |
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| 451 | // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); } |
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[4d51835] | 452 | | assignment_expression |
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| 453 | ; |
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[b87a5ed] | 454 | |
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| 455 | field_list: // CFA, tuple field selector |
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[4d51835] | 456 | field |
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[1d4580a] | 457 | | field_list ',' field { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
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[4d51835] | 458 | ; |
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[b87a5ed] | 459 | |
---|
| 460 | field: // CFA, tuple field selector |
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[faddbd8] | 461 | field_name |
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[1b29996] | 462 | | REALDECIMALconstant field |
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[8780e30] | 463 | { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_REALDECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); } |
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[1b29996] | 464 | | REALDECIMALconstant '[' push field_list pop ']' |
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[8780e30] | 465 | { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_REALDECIMALconstant( *$1 ) ), build_tuple( $4 ) ) ); } |
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[faddbd8] | 466 | | field_name '.' field |
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[bf32bb8] | 467 | { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); } |
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[faddbd8] | 468 | | field_name '.' '[' push field_list pop ']' |
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[bf32bb8] | 469 | { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $5 ) ) ); } |
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[faddbd8] | 470 | | field_name ARROW field |
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[bf32bb8] | 471 | { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); } |
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[faddbd8] | 472 | | field_name ARROW '[' push field_list pop ']' |
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[bf32bb8] | 473 | { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $5 ) ) ); } |
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[4d51835] | 474 | ; |
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[51b7345] | 475 | |
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[faddbd8] | 476 | field_name: |
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[1b29996] | 477 | INTEGERconstant fraction_constants |
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[8780e30] | 478 | { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); } |
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[1b29996] | 479 | | FLOATINGconstant fraction_constants |
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[8780e30] | 480 | { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); } |
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[1b29996] | 481 | | no_attr_identifier fraction_constants |
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[4cb935e] | 482 | { |
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| 483 | if( (*$1) == "0" || (*$1) == "1" ) { |
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| 484 | $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantZeroOne( *$1 ), $2 ) ); |
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| 485 | } else { |
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| 486 | $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) ); |
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| 487 | } |
---|
| 488 | } |
---|
[1b29996] | 489 | ; |
---|
| 490 | |
---|
| 491 | fraction_constants: |
---|
| 492 | // empty |
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[8780e30] | 493 | { $$ = nullptr; } |
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[1b29996] | 494 | | fraction_constants REALFRACTIONconstant |
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[8780e30] | 495 | { |
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| 496 | Expression * constant = build_field_name_REALFRACTIONconstant( *$2 ); |
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| 497 | $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant ); |
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| 498 | } |
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[faddbd8] | 499 | ; |
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| 500 | |
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[51b7345] | 501 | unary_expression: |
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[4d51835] | 502 | postfix_expression |
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[c6b1105] | 503 | // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires |
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| 504 | // semantics checks, e.g., ++3, 3--, *3, &&3 |
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[51b1202] | 505 | | constant |
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| 506 | { $$ = $1; } |
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[ab57786] | 507 | | string_literal |
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[d1625f8] | 508 | { $$ = new ExpressionNode( $1 ); } |
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[4d51835] | 509 | | EXTENSION cast_expression // GCC |
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[e04ef3a] | 510 | { $$ = $2->set_extension( true ); } |
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[c6b1105] | 511 | // '*' ('&') is separated from unary_operator because of shift/reduce conflict in: |
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| 512 | // { * X; } // dereference X |
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| 513 | // { * int X; } // CFA declaration of pointer to int |
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[51e076e] | 514 | | ptrref_operator cast_expression // CFA |
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[9706554] | 515 | { |
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| 516 | switch ( $1 ) { |
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[d9e2280] | 517 | case OperKinds::AddressOf: |
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[d1625f8] | 518 | $$ = new ExpressionNode( build_addressOf( $2 ) ); |
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[9706554] | 519 | break; |
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[d9e2280] | 520 | case OperKinds::PointTo: |
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[d1625f8] | 521 | $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); |
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[9706554] | 522 | break; |
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| 523 | default: |
---|
| 524 | assert( false ); |
---|
| 525 | } |
---|
| 526 | } |
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[4d51835] | 527 | | unary_operator cast_expression |
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[d1625f8] | 528 | { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); } |
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[dd51906] | 529 | | ICR unary_expression |
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[d1625f8] | 530 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); } |
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[dd51906] | 531 | | DECR unary_expression |
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[d1625f8] | 532 | { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); } |
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[4d51835] | 533 | | SIZEOF unary_expression |
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[d1625f8] | 534 | { $$ = new ExpressionNode( build_sizeOfexpr( $2 ) ); } |
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[4d51835] | 535 | | SIZEOF '(' type_name_no_function ')' |
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[d1625f8] | 536 | { $$ = new ExpressionNode( build_sizeOftype( $3 ) ); } |
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| 537 | | ALIGNOF unary_expression // GCC, variable alignment |
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| 538 | { $$ = new ExpressionNode( build_alignOfexpr( $2 ) ); } |
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| 539 | | ALIGNOF '(' type_name_no_function ')' // GCC, type alignment |
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| 540 | { $$ = new ExpressionNode( build_alignOftype( $3 ) ); } |
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[5721a6d] | 541 | | OFFSETOF '(' type_name_no_function ',' no_attr_identifier ')' |
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[d1625f8] | 542 | { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); } |
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[4d51835] | 543 | | ATTR_IDENTIFIER |
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[d1625f8] | 544 | { $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), nullptr ) ); } |
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[4d51835] | 545 | | ATTR_IDENTIFIER '(' argument_expression ')' |
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[d1625f8] | 546 | { $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), $3 ) ); } |
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| 547 | | ATTR_IDENTIFIER '(' type_name ')' |
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| 548 | { $$ = new ExpressionNode( build_attrtype( build_varref( $1 ), $3 ) ); } |
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[c6b1105] | 549 | // | ANDAND IDENTIFIER // GCC, address of label |
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[d1625f8] | 550 | // { $$ = new ExpressionNode( new OperatorNode( OperKinds::LabelAddress ), new ExpressionNode( build_varref( $2, true ) ); } |
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[4d51835] | 551 | ; |
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[51b7345] | 552 | |
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[dd51906] | 553 | ptrref_operator: |
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[d9e2280] | 554 | '*' { $$ = OperKinds::PointTo; } |
---|
| 555 | | '&' { $$ = OperKinds::AddressOf; } |
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[c6b1105] | 556 | // GCC, address of label must be handled by semantic check for ref,ref,label |
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[d9e2280] | 557 | // | ANDAND { $$ = OperKinds::And; } |
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[dd51906] | 558 | ; |
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| 559 | |
---|
[51b7345] | 560 | unary_operator: |
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[d9e2280] | 561 | '+' { $$ = OperKinds::UnPlus; } |
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| 562 | | '-' { $$ = OperKinds::UnMinus; } |
---|
| 563 | | '!' { $$ = OperKinds::Neg; } |
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| 564 | | '~' { $$ = OperKinds::BitNeg; } |
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[4d51835] | 565 | ; |
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[51b7345] | 566 | |
---|
| 567 | cast_expression: |
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[4d51835] | 568 | unary_expression |
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| 569 | | '(' type_name_no_function ')' cast_expression |
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[d1625f8] | 570 | { $$ = new ExpressionNode( build_cast( $2, $4 ) ); } |
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[1b29996] | 571 | // | '(' type_name_no_function ')' tuple |
---|
| 572 | // { $$ = new ExpressionNode( build_cast( $2, $4 ) ); } |
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[4d51835] | 573 | ; |
---|
[51b7345] | 574 | |
---|
| 575 | multiplicative_expression: |
---|
[4d51835] | 576 | cast_expression |
---|
| 577 | | multiplicative_expression '*' cast_expression |
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[d1625f8] | 578 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); } |
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[4d51835] | 579 | | multiplicative_expression '/' cast_expression |
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[d1625f8] | 580 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); } |
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[4d51835] | 581 | | multiplicative_expression '%' cast_expression |
---|
[d1625f8] | 582 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); } |
---|
[4d51835] | 583 | ; |
---|
[51b7345] | 584 | |
---|
| 585 | additive_expression: |
---|
[4d51835] | 586 | multiplicative_expression |
---|
| 587 | | additive_expression '+' multiplicative_expression |
---|
[d1625f8] | 588 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); } |
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[4d51835] | 589 | | additive_expression '-' multiplicative_expression |
---|
[d1625f8] | 590 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); } |
---|
[4d51835] | 591 | ; |
---|
[51b7345] | 592 | |
---|
| 593 | shift_expression: |
---|
[4d51835] | 594 | additive_expression |
---|
| 595 | | shift_expression LS additive_expression |
---|
[d1625f8] | 596 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); } |
---|
[4d51835] | 597 | | shift_expression RS additive_expression |
---|
[d1625f8] | 598 | { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); } |
---|
[4d51835] | 599 | ; |
---|
[51b7345] | 600 | |
---|
| 601 | relational_expression: |
---|
[4d51835] | 602 | shift_expression |
---|
| 603 | | relational_expression '<' shift_expression |
---|
[d1625f8] | 604 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); } |
---|
[4d51835] | 605 | | relational_expression '>' shift_expression |
---|
[d1625f8] | 606 | { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); } |
---|
[4d51835] | 607 | | relational_expression LE shift_expression |
---|
[d1625f8] | 608 | { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); } |
---|
[4d51835] | 609 | | relational_expression GE shift_expression |
---|
[d1625f8] | 610 | { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); } |
---|
[4d51835] | 611 | ; |
---|
[51b7345] | 612 | |
---|
| 613 | equality_expression: |
---|
[4d51835] | 614 | relational_expression |
---|
| 615 | | equality_expression EQ relational_expression |
---|
[d1625f8] | 616 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); } |
---|
[4d51835] | 617 | | equality_expression NE relational_expression |
---|
[d1625f8] | 618 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); } |
---|
[4d51835] | 619 | ; |
---|
[51b7345] | 620 | |
---|
| 621 | AND_expression: |
---|
[4d51835] | 622 | equality_expression |
---|
| 623 | | AND_expression '&' equality_expression |
---|
[d1625f8] | 624 | { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); } |
---|
[4d51835] | 625 | ; |
---|
[51b7345] | 626 | |
---|
| 627 | exclusive_OR_expression: |
---|
[4d51835] | 628 | AND_expression |
---|
| 629 | | exclusive_OR_expression '^' AND_expression |
---|
[d1625f8] | 630 | { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); } |
---|
[4d51835] | 631 | ; |
---|
[51b7345] | 632 | |
---|
| 633 | inclusive_OR_expression: |
---|
[4d51835] | 634 | exclusive_OR_expression |
---|
| 635 | | inclusive_OR_expression '|' exclusive_OR_expression |
---|
[d1625f8] | 636 | { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); } |
---|
[4d51835] | 637 | ; |
---|
[51b7345] | 638 | |
---|
| 639 | logical_AND_expression: |
---|
[4d51835] | 640 | inclusive_OR_expression |
---|
| 641 | | logical_AND_expression ANDAND inclusive_OR_expression |
---|
[d1625f8] | 642 | { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); } |
---|
[4d51835] | 643 | ; |
---|
[51b7345] | 644 | |
---|
| 645 | logical_OR_expression: |
---|
[4d51835] | 646 | logical_AND_expression |
---|
| 647 | | logical_OR_expression OROR logical_AND_expression |
---|
[d1625f8] | 648 | { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); } |
---|
[4d51835] | 649 | ; |
---|
[51b7345] | 650 | |
---|
| 651 | conditional_expression: |
---|
[4d51835] | 652 | logical_OR_expression |
---|
| 653 | | logical_OR_expression '?' comma_expression ':' conditional_expression |
---|
[d1625f8] | 654 | { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); } |
---|
[d9e2280] | 655 | // FIX ME: this hack computes $1 twice |
---|
[4d51835] | 656 | | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand |
---|
[d1625f8] | 657 | { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); } |
---|
[1b29996] | 658 | // | logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression |
---|
| 659 | // { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); } |
---|
[4d51835] | 660 | ; |
---|
[51b7345] | 661 | |
---|
| 662 | constant_expression: |
---|
[4d51835] | 663 | conditional_expression |
---|
| 664 | ; |
---|
[51b7345] | 665 | |
---|
| 666 | assignment_expression: |
---|
[4d51835] | 667 | // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples |
---|
| 668 | conditional_expression |
---|
| 669 | | unary_expression assignment_operator assignment_expression |
---|
[d1625f8] | 670 | { $$ = new ExpressionNode( build_binary_ptr( $2, $1, $3 ) ); } |
---|
[1b29996] | 671 | // | tuple assignment_opt // CFA, tuple expression |
---|
| 672 | // { $$ = ( $2 == 0 ) ? $1 : new ExpressionNode( build_binary_ptr( OperKinds::Assign, $1, $2 ) ); } |
---|
[4d51835] | 673 | ; |
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[51b7345] | 674 | |
---|
| 675 | assignment_expression_opt: |
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[4d51835] | 676 | // empty |
---|
[d1625f8] | 677 | { $$ = nullptr; } |
---|
[4d51835] | 678 | | assignment_expression |
---|
| 679 | ; |
---|
[b87a5ed] | 680 | |
---|
[9706554] | 681 | assignment_operator: |
---|
[d9e2280] | 682 | '=' { $$ = OperKinds::Assign; } |
---|
[a839867] | 683 | | ATassign { $$ = OperKinds::AtAssn; } |
---|
[d9e2280] | 684 | | MULTassign { $$ = OperKinds::MulAssn; } |
---|
| 685 | | DIVassign { $$ = OperKinds::DivAssn; } |
---|
| 686 | | MODassign { $$ = OperKinds::ModAssn; } |
---|
| 687 | | PLUSassign { $$ = OperKinds::PlusAssn; } |
---|
| 688 | | MINUSassign { $$ = OperKinds::MinusAssn; } |
---|
| 689 | | LSassign { $$ = OperKinds::LSAssn; } |
---|
| 690 | | RSassign { $$ = OperKinds::RSAssn; } |
---|
| 691 | | ANDassign { $$ = OperKinds::AndAssn; } |
---|
| 692 | | ERassign { $$ = OperKinds::ERAssn; } |
---|
| 693 | | ORassign { $$ = OperKinds::OrAssn; } |
---|
[413ad05] | 694 | ; |
---|
[9706554] | 695 | |
---|
[b87a5ed] | 696 | tuple: // CFA, tuple |
---|
[de62360d] | 697 | // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with |
---|
[c0aa336] | 698 | // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array |
---|
[1b29996] | 699 | // '[' ']' |
---|
| 700 | // { $$ = new ExpressionNode( build_tuple() ); } |
---|
| 701 | // '[' push assignment_expression pop ']' |
---|
| 702 | // { $$ = new ExpressionNode( build_tuple( $3 ) ); } |
---|
| 703 | '[' push ',' tuple_expression_list pop ']' |
---|
[1d4580a] | 704 | { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $4 ) ) ); } |
---|
[4d51835] | 705 | | '[' push assignment_expression ',' tuple_expression_list pop ']' |
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[1d4580a] | 706 | { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)$3->set_last( $5 ) ) ); } |
---|
[4d51835] | 707 | ; |
---|
[51b7345] | 708 | |
---|
| 709 | tuple_expression_list: |
---|
[4d51835] | 710 | assignment_expression_opt |
---|
| 711 | | tuple_expression_list ',' assignment_expression_opt |
---|
[1d4580a] | 712 | { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 713 | ; |
---|
[51b7345] | 714 | |
---|
| 715 | comma_expression: |
---|
[4d51835] | 716 | assignment_expression |
---|
[9706554] | 717 | | comma_expression ',' assignment_expression |
---|
[d1625f8] | 718 | { $$ = new ExpressionNode( build_comma( $1, $3 ) ); } |
---|
[4d51835] | 719 | ; |
---|
[51b7345] | 720 | |
---|
| 721 | comma_expression_opt: |
---|
[4d51835] | 722 | // empty |
---|
[58dd019] | 723 | { $$ = nullptr; } |
---|
[4d51835] | 724 | | comma_expression |
---|
| 725 | ; |
---|
[51b7345] | 726 | |
---|
[c11e31c] | 727 | //*************************** STATEMENTS ******************************* |
---|
[51b7345] | 728 | |
---|
| 729 | statement: |
---|
[4d51835] | 730 | labeled_statement |
---|
| 731 | | compound_statement |
---|
| 732 | | expression_statement { $$ = $1; } |
---|
| 733 | | selection_statement |
---|
| 734 | | iteration_statement |
---|
| 735 | | jump_statement |
---|
| 736 | | exception_statement |
---|
| 737 | | asm_statement |
---|
[51b7345] | 738 | |
---|
| 739 | labeled_statement: |
---|
[44a81853] | 740 | // labels cannot be identifiers 0 or 1 or ATTR_IDENTIFIER |
---|
| 741 | identifier_or_type_name ':' attribute_list_opt statement |
---|
[1db21619] | 742 | { |
---|
[44a81853] | 743 | $$ = $4->add_label( $1, $3 ); |
---|
[1db21619] | 744 | } |
---|
[4d51835] | 745 | ; |
---|
[51b7345] | 746 | |
---|
| 747 | compound_statement: |
---|
[4d51835] | 748 | '{' '}' |
---|
[e82aa9df] | 749 | { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); } |
---|
[4d51835] | 750 | | '{' |
---|
[de62360d] | 751 | // Two scopes are necessary because the block itself has a scope, but every declaration within the block also |
---|
[3a2128f] | 752 | // requires its own scope. |
---|
[4d51835] | 753 | push push |
---|
[51b1202] | 754 | local_label_declaration_opt // GCC, local labels |
---|
[c0aa336] | 755 | block_item_list // C99, intermix declarations and statements |
---|
| 756 | pop '}' |
---|
[e82aa9df] | 757 | { $$ = new StatementNode( build_compound( $5 ) ); } |
---|
[4d51835] | 758 | ; |
---|
[b87a5ed] | 759 | |
---|
| 760 | block_item_list: // C99 |
---|
[4d51835] | 761 | block_item |
---|
| 762 | | block_item_list push block_item |
---|
[1d4580a] | 763 | { if ( $1 != 0 ) { $1->set_last( $3 ); $$ = $1; } } |
---|
[4d51835] | 764 | ; |
---|
[51b7345] | 765 | |
---|
| 766 | block_item: |
---|
[4d51835] | 767 | declaration // CFA, new & old style declarations |
---|
[e82aa9df] | 768 | { $$ = new StatementNode( $1 ); } |
---|
[4d51835] | 769 | | EXTENSION declaration // GCC |
---|
[c0aa336] | 770 | { |
---|
| 771 | distExt( $2 ); |
---|
[e82aa9df] | 772 | $$ = new StatementNode( $2 ); |
---|
[8e9cbb2] | 773 | } |
---|
[4d51835] | 774 | | function_definition |
---|
[e82aa9df] | 775 | { $$ = new StatementNode( $1 ); } |
---|
[c0aa336] | 776 | | EXTENSION function_definition // GCC |
---|
| 777 | { |
---|
| 778 | distExt( $2 ); |
---|
| 779 | $$ = new StatementNode( $2 ); |
---|
| 780 | } |
---|
[4d51835] | 781 | | statement pop |
---|
| 782 | ; |
---|
[51b7345] | 783 | |
---|
| 784 | statement_list: |
---|
[4d51835] | 785 | statement |
---|
| 786 | | statement_list statement |
---|
[1d4580a] | 787 | { if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } } |
---|
[4d51835] | 788 | ; |
---|
[51b7345] | 789 | |
---|
| 790 | expression_statement: |
---|
[4d51835] | 791 | comma_expression_opt ';' |
---|
[e82aa9df] | 792 | { $$ = new StatementNode( build_expr( $1 ) ); } |
---|
[4d51835] | 793 | ; |
---|
[51b7345] | 794 | |
---|
| 795 | selection_statement: |
---|
[4d51835] | 796 | IF '(' comma_expression ')' statement %prec THEN |
---|
| 797 | // explicitly deal with the shift/reduce conflict on if/else |
---|
[e82aa9df] | 798 | { $$ = new StatementNode( build_if( $3, $5, nullptr ) ); } |
---|
[4d51835] | 799 | | IF '(' comma_expression ')' statement ELSE statement |
---|
[e82aa9df] | 800 | { $$ = new StatementNode( build_if( $3, $5, $7 ) ); } |
---|
[4d51835] | 801 | | SWITCH '(' comma_expression ')' case_clause // CFA |
---|
[e82aa9df] | 802 | { $$ = new StatementNode( build_switch( $3, $5 ) ); } |
---|
[4d51835] | 803 | | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA |
---|
[4e06c1e] | 804 | { |
---|
[e82aa9df] | 805 | StatementNode *sw = new StatementNode( build_switch( $3, $8 ) ); |
---|
[4e06c1e] | 806 | // The semantics of the declaration list is changed to include associated initialization, which is performed |
---|
| 807 | // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound |
---|
| 808 | // statement around the switch. Statements after the initial declaration list can never be executed, and |
---|
[8688ce1] | 809 | // therefore, are removed from the grammar even though C allows it. The change also applies to choose |
---|
| 810 | // statement. |
---|
[a7741435] | 811 | $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw; |
---|
[4e06c1e] | 812 | } |
---|
[4d51835] | 813 | | CHOOSE '(' comma_expression ')' case_clause // CFA |
---|
[e82aa9df] | 814 | { $$ = new StatementNode( build_switch( $3, $5 ) ); } |
---|
[4d51835] | 815 | | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA |
---|
[4e06c1e] | 816 | { |
---|
[e82aa9df] | 817 | StatementNode *sw = new StatementNode( build_switch( $3, $8 ) ); |
---|
[a7741435] | 818 | $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw; |
---|
[4e06c1e] | 819 | } |
---|
[4d51835] | 820 | ; |
---|
[b87a5ed] | 821 | |
---|
[de62360d] | 822 | // CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case |
---|
| 823 | // clause allows a list of values and subranges. |
---|
[b87a5ed] | 824 | |
---|
| 825 | case_value: // CFA |
---|
[4d51835] | 826 | constant_expression { $$ = $1; } |
---|
| 827 | | constant_expression ELLIPSIS constant_expression // GCC, subrange |
---|
[d1625f8] | 828 | { $$ = new ExpressionNode( build_range( $1, $3 ) ); } |
---|
[4d51835] | 829 | | subrange // CFA, subrange |
---|
| 830 | ; |
---|
[b87a5ed] | 831 | |
---|
| 832 | case_value_list: // CFA |
---|
[e82aa9df] | 833 | case_value { $$ = new StatementNode( build_case( $1 ) ); } |
---|
[064e3ff] | 834 | // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5" |
---|
[e82aa9df] | 835 | | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); } |
---|
[4d51835] | 836 | ; |
---|
[b87a5ed] | 837 | |
---|
| 838 | case_label: // CFA |
---|
[8688ce1] | 839 | CASE case_value_list ':' { $$ = $2; } |
---|
[e82aa9df] | 840 | | DEFAULT ':' { $$ = new StatementNode( build_default() ); } |
---|
[4d51835] | 841 | // A semantic check is required to ensure only one default clause per switch/choose statement. |
---|
| 842 | ; |
---|
[b87a5ed] | 843 | |
---|
| 844 | case_label_list: // CFA |
---|
[4d51835] | 845 | case_label |
---|
[1d4580a] | 846 | | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); } |
---|
[4d51835] | 847 | ; |
---|
[b87a5ed] | 848 | |
---|
| 849 | case_clause: // CFA |
---|
[e82aa9df] | 850 | case_label_list statement { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); } |
---|
[4d51835] | 851 | ; |
---|
[b87a5ed] | 852 | |
---|
| 853 | switch_clause_list_opt: // CFA |
---|
[4d51835] | 854 | // empty |
---|
[58dd019] | 855 | { $$ = nullptr; } |
---|
[4d51835] | 856 | | switch_clause_list |
---|
| 857 | ; |
---|
[b87a5ed] | 858 | |
---|
| 859 | switch_clause_list: // CFA |
---|
[4d51835] | 860 | case_label_list statement_list |
---|
[e82aa9df] | 861 | { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); } |
---|
[4d51835] | 862 | | switch_clause_list case_label_list statement_list |
---|
[e82aa9df] | 863 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); } |
---|
[4d51835] | 864 | ; |
---|
[b87a5ed] | 865 | |
---|
| 866 | choose_clause_list_opt: // CFA |
---|
[4d51835] | 867 | // empty |
---|
[58dd019] | 868 | { $$ = nullptr; } |
---|
[4d51835] | 869 | | choose_clause_list |
---|
| 870 | ; |
---|
[b87a5ed] | 871 | |
---|
| 872 | choose_clause_list: // CFA |
---|
[4d51835] | 873 | case_label_list fall_through |
---|
[de62360d] | 874 | { $$ = $1->append_last_case( $2 ); } |
---|
[4d51835] | 875 | | case_label_list statement_list fall_through_opt |
---|
[e82aa9df] | 876 | { $$ = $1->append_last_case( new StatementNode( build_compound( (StatementNode *)$2->set_last( $3 ) ) ) ); } |
---|
[4d51835] | 877 | | choose_clause_list case_label_list fall_through |
---|
[1d4580a] | 878 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( $3 ))); } |
---|
[4d51835] | 879 | | choose_clause_list case_label_list statement_list fall_through_opt |
---|
[e82aa9df] | 880 | { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( (StatementNode *)$3->set_last( $4 ) ) ) ) ) ); } |
---|
[4d51835] | 881 | ; |
---|
[b87a5ed] | 882 | |
---|
| 883 | fall_through_opt: // CFA |
---|
[4d51835] | 884 | // empty |
---|
[ab57786] | 885 | { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } // insert implicit break |
---|
[4d51835] | 886 | | fall_through |
---|
| 887 | ; |
---|
[b87a5ed] | 888 | |
---|
| 889 | fall_through: // CFA |
---|
[4e06c1e] | 890 | FALLTHRU |
---|
[58dd019] | 891 | { $$ = nullptr; } |
---|
[4e06c1e] | 892 | | FALLTHRU ';' |
---|
[58dd019] | 893 | { $$ = nullptr; } |
---|
[4d51835] | 894 | ; |
---|
[51b7345] | 895 | |
---|
| 896 | iteration_statement: |
---|
[4d51835] | 897 | WHILE '(' comma_expression ')' statement |
---|
[e82aa9df] | 898 | { $$ = new StatementNode( build_while( $3, $5 ) ); } |
---|
[4d51835] | 899 | | DO statement WHILE '(' comma_expression ')' ';' |
---|
[5b639ee] | 900 | { $$ = new StatementNode( build_while( $5, $2, true ) ); } |
---|
[4d51835] | 901 | | FOR '(' push for_control_expression ')' statement |
---|
[e82aa9df] | 902 | { $$ = new StatementNode( build_for( $4, $6 ) ); } |
---|
[4d51835] | 903 | ; |
---|
[51b7345] | 904 | |
---|
| 905 | for_control_expression: |
---|
[4d51835] | 906 | comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt |
---|
[2f22cc4] | 907 | { $$ = new ForCtl( $1, $4, $6 ); } |
---|
[4d51835] | 908 | | declaration comma_expression_opt ';' comma_expression_opt // C99 |
---|
[2f22cc4] | 909 | { $$ = new ForCtl( $1, $2, $4 ); } |
---|
[d1625f8] | 910 | ; |
---|
[51b7345] | 911 | |
---|
| 912 | jump_statement: |
---|
[44a81853] | 913 | GOTO identifier_or_type_name ';' |
---|
[ab57786] | 914 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); } |
---|
[4d51835] | 915 | | GOTO '*' comma_expression ';' // GCC, computed goto |
---|
[4e06c1e] | 916 | // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3); |
---|
[de62360d] | 917 | // whereas normal operator precedence yields goto (*i)+3; |
---|
[e82aa9df] | 918 | { $$ = new StatementNode( build_computedgoto( $3 ) ); } |
---|
[4d51835] | 919 | | CONTINUE ';' |
---|
[de62360d] | 920 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[ab57786] | 921 | { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); } |
---|
[44a81853] | 922 | | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue |
---|
[de62360d] | 923 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 924 | // the target of the transfer appears only at the start of an iteration statement. |
---|
[ab57786] | 925 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); } |
---|
[4d51835] | 926 | | BREAK ';' |
---|
[de62360d] | 927 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement. |
---|
[ab57786] | 928 | { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } |
---|
[44a81853] | 929 | | BREAK identifier_or_type_name ';' // CFA, multi-level exit |
---|
[de62360d] | 930 | // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and |
---|
| 931 | // the target of the transfer appears only at the start of an iteration statement. |
---|
[ab57786] | 932 | { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); } |
---|
[4d51835] | 933 | | RETURN comma_expression_opt ';' |
---|
[e82aa9df] | 934 | { $$ = new StatementNode( build_return( $2 ) ); } |
---|
[8cc5cb0] | 935 | | THROW assignment_expression_opt ';' // handles rethrow |
---|
[e82aa9df] | 936 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[8cc5cb0] | 937 | | THROWRESUME assignment_expression_opt ';' // handles reresume |
---|
[e82aa9df] | 938 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[8cc5cb0] | 939 | | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume |
---|
[e82aa9df] | 940 | { $$ = new StatementNode( build_throw( $2 ) ); } |
---|
[4d51835] | 941 | ; |
---|
[51b7345] | 942 | |
---|
| 943 | exception_statement: |
---|
[4d51835] | 944 | TRY compound_statement handler_list |
---|
[e82aa9df] | 945 | { $$ = new StatementNode( build_try( $2, $3, 0 ) ); } |
---|
[4d51835] | 946 | | TRY compound_statement finally_clause |
---|
[e82aa9df] | 947 | { $$ = new StatementNode( build_try( $2, 0, $3 ) ); } |
---|
[4d51835] | 948 | | TRY compound_statement handler_list finally_clause |
---|
[e82aa9df] | 949 | { $$ = new StatementNode( build_try( $2, $3, $4 ) ); } |
---|
[4d51835] | 950 | ; |
---|
[51b7345] | 951 | |
---|
| 952 | handler_list: |
---|
[4d51835] | 953 | handler_clause |
---|
[de62360d] | 954 | // ISO/IEC 9899:1999 Section 15.3(6 ) If present, a "..." handler shall be the last handler for its try block. |
---|
[4d51835] | 955 | | CATCH '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 956 | { $$ = new StatementNode( build_catch( 0, $5, true ) ); } |
---|
[4d51835] | 957 | | handler_clause CATCH '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 958 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( 0, $6, true ) ) ); } |
---|
[02e5ab6] | 959 | | CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 960 | { $$ = new StatementNode( build_catch( 0, $5, true ) ); } |
---|
[02e5ab6] | 961 | | handler_clause CATCHRESUME '(' ELLIPSIS ')' compound_statement |
---|
[e82aa9df] | 962 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( 0, $6, true ) ) ); } |
---|
[4d51835] | 963 | ; |
---|
[51b7345] | 964 | |
---|
| 965 | handler_clause: |
---|
[4d51835] | 966 | CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 967 | { $$ = new StatementNode( build_catch( $5, $8 ) ); } |
---|
[4d51835] | 968 | | handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop |
---|
[1b77274] | 969 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $6, $9 ) ) ); } |
---|
[02e5ab6] | 970 | | CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 971 | { $$ = new StatementNode( build_catch( $5, $8 ) ); } |
---|
[02e5ab6] | 972 | | handler_clause CATCHRESUME '(' push push exception_declaration pop ')' compound_statement pop |
---|
[e82aa9df] | 973 | { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $6, $9 ) ) ); } |
---|
[4d51835] | 974 | ; |
---|
[51b7345] | 975 | |
---|
| 976 | finally_clause: |
---|
[4d51835] | 977 | FINALLY compound_statement |
---|
| 978 | { |
---|
[e82aa9df] | 979 | $$ = new StatementNode( build_finally( $2 ) ); |
---|
[4d51835] | 980 | } |
---|
| 981 | ; |
---|
[51b7345] | 982 | |
---|
| 983 | exception_declaration: |
---|
[d0ffed1] | 984 | // No SUE declaration in parameter list. |
---|
| 985 | type_specifier_nobody |
---|
| 986 | | type_specifier_nobody declarator |
---|
[4d51835] | 987 | { |
---|
| 988 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 989 | $$ = $2->addType( $1 ); |
---|
| 990 | } |
---|
[d0ffed1] | 991 | | type_specifier_nobody variable_abstract_declarator |
---|
[4d51835] | 992 | { $$ = $2->addType( $1 ); } |
---|
[c0aa336] | 993 | | cfa_abstract_declarator_tuple no_attr_identifier // CFA |
---|
[4d51835] | 994 | { |
---|
| 995 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 996 | $$ = $1->addName( $2 ); |
---|
| 997 | } |
---|
[c0aa336] | 998 | | cfa_abstract_declarator_tuple // CFA |
---|
[4d51835] | 999 | ; |
---|
[51b7345] | 1000 | |
---|
| 1001 | asm_statement: |
---|
[ab57786] | 1002 | ASM asm_volatile_opt '(' string_literal ')' ';' |
---|
[e82aa9df] | 1003 | { $$ = new StatementNode( build_asmstmt( $2, $4, 0 ) ); } |
---|
[ab57786] | 1004 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC |
---|
[e82aa9df] | 1005 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6 ) ); } |
---|
[ab57786] | 1006 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';' |
---|
[e82aa9df] | 1007 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8 ) ); } |
---|
[ab57786] | 1008 | | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';' |
---|
[e82aa9df] | 1009 | { $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8, $10 ) ); } |
---|
[ab57786] | 1010 | | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';' |
---|
[e82aa9df] | 1011 | { $$ = new StatementNode( build_asmstmt( $2, $5, 0, $8, $10, $12 ) ); } |
---|
[7f5566b] | 1012 | ; |
---|
| 1013 | |
---|
| 1014 | asm_volatile_opt: // GCC |
---|
| 1015 | // empty |
---|
| 1016 | { $$ = false; } |
---|
| 1017 | | VOLATILE |
---|
| 1018 | { $$ = true; } |
---|
[4d51835] | 1019 | ; |
---|
[b87a5ed] | 1020 | |
---|
| 1021 | asm_operands_opt: // GCC |
---|
[4d51835] | 1022 | // empty |
---|
[58dd019] | 1023 | { $$ = nullptr; } // use default argument |
---|
[4d51835] | 1024 | | asm_operands_list |
---|
| 1025 | ; |
---|
[b87a5ed] | 1026 | |
---|
| 1027 | asm_operands_list: // GCC |
---|
[4d51835] | 1028 | asm_operand |
---|
| 1029 | | asm_operands_list ',' asm_operand |
---|
[1d4580a] | 1030 | { $$ = (ExpressionNode *)$1->set_last( $3 ); } |
---|
[4d51835] | 1031 | ; |
---|
[b87a5ed] | 1032 | |
---|
| 1033 | asm_operand: // GCC |
---|
[ab57786] | 1034 | string_literal '(' constant_expression ')' |
---|
[e82aa9df] | 1035 | { $$ = new ExpressionNode( build_asmexpr( 0, $1, $3 ) ); } |
---|
[ab57786] | 1036 | | '[' constant_expression ']' string_literal '(' constant_expression ')' |
---|
[1b77274] | 1037 | { $$ = new ExpressionNode( build_asmexpr( $2, $4, $6 ) ); } |
---|
[7f5566b] | 1038 | ; |
---|
| 1039 | |
---|
[4e06c1e] | 1040 | asm_clobbers_list_opt: // GCC |
---|
[7f5566b] | 1041 | // empty |
---|
[58dd019] | 1042 | { $$ = nullptr; } // use default argument |
---|
[ab57786] | 1043 | | string_literal |
---|
[d1625f8] | 1044 | { $$ = new ExpressionNode( $1 ); } |
---|
[ab57786] | 1045 | | asm_clobbers_list_opt ',' string_literal |
---|
[a7741435] | 1046 | // set_last return ParseNode * |
---|
[e82aa9df] | 1047 | { $$ = (ExpressionNode *)$1->set_last( new ExpressionNode( $3 ) ); } |
---|
[4d51835] | 1048 | ; |
---|
[b87a5ed] | 1049 | |
---|
[7f5566b] | 1050 | label_list: |
---|
| 1051 | no_attr_identifier |
---|
[ab57786] | 1052 | { |
---|
| 1053 | $$ = new LabelNode(); $$->labels.push_back( *$1 ); |
---|
| 1054 | delete $1; // allocated by lexer |
---|
| 1055 | } |
---|
[7f5566b] | 1056 | | label_list ',' no_attr_identifier |
---|
[ab57786] | 1057 | { |
---|
| 1058 | $$ = $1; $1->labels.push_back( *$3 ); |
---|
| 1059 | delete $3; // allocated by lexer |
---|
| 1060 | } |
---|
[4d51835] | 1061 | ; |
---|
[51b7345] | 1062 | |
---|
[c11e31c] | 1063 | //******************************* DECLARATIONS ********************************* |
---|
[51b7345] | 1064 | |
---|
[b87a5ed] | 1065 | declaration_list_opt: // used at beginning of switch statement |
---|
[4d51835] | 1066 | pop |
---|
[58dd019] | 1067 | { $$ = nullptr; } |
---|
[4d51835] | 1068 | | declaration_list |
---|
| 1069 | ; |
---|
[51b7345] | 1070 | |
---|
| 1071 | declaration_list: |
---|
[4d51835] | 1072 | declaration |
---|
| 1073 | | declaration_list push declaration |
---|
| 1074 | { $$ = $1->appendList( $3 ); } |
---|
| 1075 | ; |
---|
[51b7345] | 1076 | |
---|
[c0aa336] | 1077 | KR_declaration_list_opt: // used to declare parameter types in K&R style functions |
---|
[4d51835] | 1078 | pop |
---|
[58dd019] | 1079 | { $$ = nullptr; } |
---|
[c0aa336] | 1080 | | KR_declaration_list |
---|
[4d51835] | 1081 | ; |
---|
[51b7345] | 1082 | |
---|
[c0aa336] | 1083 | KR_declaration_list: |
---|
| 1084 | c_declaration |
---|
| 1085 | | KR_declaration_list push c_declaration |
---|
[4d51835] | 1086 | { $$ = $1->appendList( $3 ); } |
---|
| 1087 | ; |
---|
[b87a5ed] | 1088 | |
---|
[51b1202] | 1089 | local_label_declaration_opt: // GCC, local label |
---|
[4d51835] | 1090 | // empty |
---|
[51b1202] | 1091 | | local_label_declaration_list |
---|
[4d51835] | 1092 | ; |
---|
[b87a5ed] | 1093 | |
---|
[51b1202] | 1094 | local_label_declaration_list: // GCC, local label |
---|
| 1095 | LABEL local_label_list ';' |
---|
| 1096 | | local_label_declaration_list LABEL local_label_list ';' |
---|
[4d51835] | 1097 | ; |
---|
[b87a5ed] | 1098 | |
---|
[51b1202] | 1099 | local_label_list: // GCC, local label |
---|
[7f5566b] | 1100 | no_attr_identifier_or_type_name {} |
---|
[51b1202] | 1101 | | local_label_list ',' no_attr_identifier_or_type_name {} |
---|
[4d51835] | 1102 | ; |
---|
[b87a5ed] | 1103 | |
---|
| 1104 | declaration: // CFA, new & old style declarations |
---|
[c0aa336] | 1105 | cfa_declaration |
---|
| 1106 | | c_declaration |
---|
[4d51835] | 1107 | ; |
---|
[b87a5ed] | 1108 | |
---|
[de62360d] | 1109 | // C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function |
---|
| 1110 | // declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to |
---|
| 1111 | // the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration |
---|
| 1112 | // modifiers are interpreted from left to right and the entire type specification is distributed across all variables in |
---|
| 1113 | // the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program |
---|
| 1114 | // block, but cannot be mixed within a specific declaration. |
---|
[c11e31c] | 1115 | // |
---|
[b87a5ed] | 1116 | // CFA C |
---|
| 1117 | // [10] int x; int x[10]; // array of 10 integers |
---|
| 1118 | // [10] * char y; char *y[10]; // array of 10 pointers to char |
---|
| 1119 | |
---|
[c0aa336] | 1120 | cfa_declaration: // CFA |
---|
| 1121 | cfa_variable_declaration pop ';' |
---|
| 1122 | | cfa_typedef_declaration pop ';' |
---|
| 1123 | | cfa_function_declaration pop ';' |
---|
[4d51835] | 1124 | | type_declaring_list pop ';' |
---|
[4040425] | 1125 | | trait_specifier pop ';' |
---|
[4d51835] | 1126 | ; |
---|
[b87a5ed] | 1127 | |
---|
[c0aa336] | 1128 | cfa_variable_declaration: // CFA |
---|
| 1129 | cfa_variable_specifier initializer_opt |
---|
[4d51835] | 1130 | { |
---|
| 1131 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1132 | $$ = $1->addInitializer( $2 ); |
---|
[4d51835] | 1133 | } |
---|
[c0aa336] | 1134 | | declaration_qualifier_list cfa_variable_specifier initializer_opt |
---|
[de62360d] | 1135 | // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude |
---|
| 1136 | // them as a type_qualifier cannot appear in that context. |
---|
[4d51835] | 1137 | { |
---|
| 1138 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[3cfe27f] | 1139 | $$ = $2->addQualifiers( $1 )->addInitializer( $3 );; |
---|
[4d51835] | 1140 | } |
---|
[c0aa336] | 1141 | | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt |
---|
[4d51835] | 1142 | { |
---|
| 1143 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
[3cfe27f] | 1144 | $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); |
---|
[4d51835] | 1145 | } |
---|
| 1146 | ; |
---|
[b87a5ed] | 1147 | |
---|
[c0aa336] | 1148 | cfa_variable_specifier: // CFA |
---|
[de62360d] | 1149 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1150 | // storage-class |
---|
[c0aa336] | 1151 | cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1152 | { |
---|
| 1153 | typedefTable.setNextIdentifier( *$2 ); |
---|
[58dd019] | 1154 | $$ = $1->addName( $2 )->addAsmName( $3 ); |
---|
[4d51835] | 1155 | } |
---|
[c0aa336] | 1156 | | cfa_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1157 | { |
---|
| 1158 | typedefTable.setNextIdentifier( *$2 ); |
---|
[58dd019] | 1159 | $$ = $1->addName( $2 )->addAsmName( $3 ); |
---|
[4d51835] | 1160 | } |
---|
[c0aa336] | 1161 | | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt |
---|
[4d51835] | 1162 | { |
---|
| 1163 | typedefTable.setNextIdentifier( *$3 ); |
---|
[58dd019] | 1164 | $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); |
---|
[4d51835] | 1165 | } |
---|
| 1166 | ; |
---|
[b87a5ed] | 1167 | |
---|
[c0aa336] | 1168 | cfa_function_declaration: // CFA |
---|
| 1169 | cfa_function_specifier |
---|
[4d51835] | 1170 | { |
---|
| 1171 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1172 | $$ = $1; |
---|
| 1173 | } |
---|
[c0aa336] | 1174 | | type_qualifier_list cfa_function_specifier |
---|
[4d51835] | 1175 | { |
---|
| 1176 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1177 | $$ = $2->addQualifiers( $1 ); |
---|
| 1178 | } |
---|
[c0aa336] | 1179 | | declaration_qualifier_list cfa_function_specifier |
---|
[4d51835] | 1180 | { |
---|
| 1181 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1182 | $$ = $2->addQualifiers( $1 ); |
---|
| 1183 | } |
---|
[c0aa336] | 1184 | | declaration_qualifier_list type_qualifier_list cfa_function_specifier |
---|
[4d51835] | 1185 | { |
---|
| 1186 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1187 | $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); |
---|
| 1188 | } |
---|
[c0aa336] | 1189 | | cfa_function_declaration pop ',' push identifier_or_type_name |
---|
[4d51835] | 1190 | { |
---|
| 1191 | typedefTable.addToEnclosingScope( *$5, TypedefTable::ID ); |
---|
| 1192 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1193 | } |
---|
| 1194 | ; |
---|
[b87a5ed] | 1195 | |
---|
[c0aa336] | 1196 | cfa_function_specifier: // CFA |
---|
| 1197 | // '[' ']' identifier_or_type_name '(' push cfa_parameter_type_list_opt pop ')' // S/R conflict |
---|
[1b29996] | 1198 | // { |
---|
| 1199 | // $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true ); |
---|
| 1200 | // } |
---|
[c0aa336] | 1201 | // '[' ']' identifier '(' push cfa_parameter_type_list_opt pop ')' |
---|
[2871210] | 1202 | // { |
---|
| 1203 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1204 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1205 | // } |
---|
[c0aa336] | 1206 | // | '[' ']' TYPEDEFname '(' push cfa_parameter_type_list_opt pop ')' |
---|
[2871210] | 1207 | // { |
---|
| 1208 | // typedefTable.setNextIdentifier( *$5 ); |
---|
| 1209 | // $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true ); |
---|
| 1210 | // } |
---|
| 1211 | // | '[' ']' typegen_name |
---|
| 1212 | // identifier_or_type_name must be broken apart because of the sequence: |
---|
[4d51835] | 1213 | // |
---|
[c0aa336] | 1214 | // '[' ']' identifier_or_type_name '(' cfa_parameter_type_list_opt ')' |
---|
[4d51835] | 1215 | // '[' ']' type_specifier |
---|
| 1216 | // |
---|
[2871210] | 1217 | // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be |
---|
| 1218 | // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name. |
---|
[c0aa336] | 1219 | cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_type_list_opt pop ')' |
---|
| 1220 | // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator). |
---|
[4d51835] | 1221 | { |
---|
| 1222 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1223 | } |
---|
[c0aa336] | 1224 | | cfa_function_return identifier_or_type_name '(' push cfa_parameter_type_list_opt pop ')' |
---|
[4d51835] | 1225 | { |
---|
| 1226 | $$ = DeclarationNode::newFunction( $2, $1, $5, 0, true ); |
---|
| 1227 | } |
---|
| 1228 | ; |
---|
[b87a5ed] | 1229 | |
---|
[c0aa336] | 1230 | cfa_function_return: // CFA |
---|
| 1231 | '[' push cfa_parameter_list pop ']' |
---|
[4d51835] | 1232 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
[c0aa336] | 1233 | | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']' |
---|
| 1234 | // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the |
---|
[de62360d] | 1235 | // ']'. |
---|
[4d51835] | 1236 | { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); } |
---|
| 1237 | ; |
---|
[b87a5ed] | 1238 | |
---|
[c0aa336] | 1239 | cfa_typedef_declaration: // CFA |
---|
| 1240 | TYPEDEF cfa_variable_specifier |
---|
[4d51835] | 1241 | { |
---|
[de62360d] | 1242 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1243 | $$ = $2->addTypedef(); |
---|
| 1244 | } |
---|
[c0aa336] | 1245 | | TYPEDEF cfa_function_specifier |
---|
[4d51835] | 1246 | { |
---|
[de62360d] | 1247 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1248 | $$ = $2->addTypedef(); |
---|
| 1249 | } |
---|
[c0aa336] | 1250 | | cfa_typedef_declaration pop ',' push no_attr_identifier |
---|
[4d51835] | 1251 | { |
---|
[de62360d] | 1252 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[4d51835] | 1253 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 1254 | } |
---|
| 1255 | ; |
---|
[b87a5ed] | 1256 | |
---|
[de62360d] | 1257 | // Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as |
---|
| 1258 | // a separate form of declaration, which syntactically precludes storage-class specifiers and initialization. |
---|
[51b7345] | 1259 | |
---|
| 1260 | typedef_declaration: |
---|
[4d51835] | 1261 | TYPEDEF type_specifier declarator |
---|
| 1262 | { |
---|
[de62360d] | 1263 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1264 | $$ = $3->addType( $2 )->addTypedef(); |
---|
| 1265 | } |
---|
| 1266 | | typedef_declaration pop ',' push declarator |
---|
| 1267 | { |
---|
[de62360d] | 1268 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1269 | $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() ); |
---|
| 1270 | } |
---|
[de62360d] | 1271 | | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1272 | { |
---|
[de62360d] | 1273 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1274 | $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef(); |
---|
| 1275 | } |
---|
| 1276 | | type_specifier TYPEDEF declarator |
---|
| 1277 | { |
---|
[de62360d] | 1278 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
[4d51835] | 1279 | $$ = $3->addType( $1 )->addTypedef(); |
---|
| 1280 | } |
---|
| 1281 | | type_specifier TYPEDEF type_qualifier_list declarator |
---|
| 1282 | { |
---|
[de62360d] | 1283 | typedefTable.addToEnclosingScope( TypedefTable::TD ); |
---|
| 1284 | $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 ); |
---|
[4d51835] | 1285 | } |
---|
| 1286 | ; |
---|
[b87a5ed] | 1287 | |
---|
[721f17a] | 1288 | typedef_expression: |
---|
| 1289 | // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression |
---|
[4d51835] | 1290 | TYPEDEF no_attr_identifier '=' assignment_expression |
---|
| 1291 | { |
---|
[de62360d] | 1292 | typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); |
---|
[c0aa336] | 1293 | $$ = DeclarationNode::newName( 0 ); // unimplemented |
---|
[4d51835] | 1294 | } |
---|
| 1295 | | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression |
---|
| 1296 | { |
---|
[de62360d] | 1297 | typedefTable.addToEnclosingScope( *$5, TypedefTable::TD ); |
---|
[c0aa336] | 1298 | $$ = DeclarationNode::newName( 0 ); // unimplemented |
---|
[4d51835] | 1299 | } |
---|
| 1300 | ; |
---|
[51b7345] | 1301 | |
---|
[c0aa336] | 1302 | //c_declaration: |
---|
| 1303 | // declaring_list pop ';' |
---|
| 1304 | // | typedef_declaration pop ';' |
---|
| 1305 | // | typedef_expression pop ';' // GCC, naming expression type |
---|
| 1306 | // | sue_declaration_specifier pop ';' |
---|
| 1307 | // ; |
---|
| 1308 | // |
---|
| 1309 | //declaring_list: |
---|
| 1310 | // // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1311 | // // storage-class |
---|
| 1312 | // declarator asm_name_opt initializer_opt |
---|
| 1313 | // { |
---|
| 1314 | // typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1315 | // $$ = ( $2->addType( $1 ))->addAsmName( $3 )->addInitializer( $4 ); |
---|
| 1316 | // } |
---|
| 1317 | // | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1318 | // { |
---|
| 1319 | // typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 1320 | // $$ = $1->appendList( $1->cloneBaseType( $4->addAsmName( $5 )->addInitializer( $6 ) ) ); |
---|
| 1321 | // } |
---|
| 1322 | // ; |
---|
| 1323 | |
---|
| 1324 | c_declaration: |
---|
| 1325 | declaration_specifier declaring_list pop ';' |
---|
| 1326 | { |
---|
| 1327 | $$ = distAttr( $1, $2 ); |
---|
| 1328 | } |
---|
[4d51835] | 1329 | | typedef_declaration pop ';' |
---|
| 1330 | | typedef_expression pop ';' // GCC, naming expression type |
---|
| 1331 | | sue_declaration_specifier pop ';' |
---|
| 1332 | ; |
---|
[51b7345] | 1333 | |
---|
| 1334 | declaring_list: |
---|
[de62360d] | 1335 | // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static |
---|
| 1336 | // storage-class |
---|
[c0aa336] | 1337 | declarator asm_name_opt initializer_opt |
---|
[4d51835] | 1338 | { |
---|
| 1339 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[c0aa336] | 1340 | $$ = $1->addAsmName( $2 )->addInitializer( $3 ); |
---|
[4d51835] | 1341 | } |
---|
| 1342 | | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt |
---|
| 1343 | { |
---|
| 1344 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[c0aa336] | 1345 | $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); |
---|
[4d51835] | 1346 | } |
---|
| 1347 | ; |
---|
[b87a5ed] | 1348 | |
---|
| 1349 | declaration_specifier: // type specifier + storage class |
---|
[4d51835] | 1350 | basic_declaration_specifier |
---|
| 1351 | | sue_declaration_specifier |
---|
| 1352 | | typedef_declaration_specifier |
---|
| 1353 | | typegen_declaration_specifier |
---|
| 1354 | ; |
---|
[b87a5ed] | 1355 | |
---|
[d0ffed1] | 1356 | declaration_specifier_nobody: // type specifier + storage class - {...} |
---|
| 1357 | // Preclude SUE declarations in restricted scopes: |
---|
| 1358 | // |
---|
| 1359 | // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... } |
---|
| 1360 | // |
---|
| 1361 | // because it is impossible to call f due to name equivalence. |
---|
| 1362 | basic_declaration_specifier |
---|
| 1363 | | sue_declaration_specifier_nobody |
---|
| 1364 | | typedef_declaration_specifier |
---|
| 1365 | | typegen_declaration_specifier |
---|
| 1366 | ; |
---|
| 1367 | |
---|
| 1368 | type_specifier: // type specifier |
---|
[4d51835] | 1369 | basic_type_specifier |
---|
| 1370 | | sue_type_specifier |
---|
| 1371 | | typedef_type_specifier |
---|
| 1372 | | typegen_type_specifier |
---|
| 1373 | ; |
---|
[b87a5ed] | 1374 | |
---|
[d0ffed1] | 1375 | type_specifier_nobody: // type specifier - {...} |
---|
| 1376 | // Preclude SUE declarations in restricted scopes: |
---|
| 1377 | // |
---|
| 1378 | // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... } |
---|
| 1379 | // |
---|
| 1380 | // because it is impossible to call f due to name equivalence. |
---|
| 1381 | basic_type_specifier |
---|
| 1382 | | sue_type_specifier_nobody |
---|
| 1383 | | typedef_type_specifier |
---|
| 1384 | | typegen_type_specifier |
---|
| 1385 | ; |
---|
| 1386 | |
---|
[b87a5ed] | 1387 | type_qualifier_list_opt: // GCC, used in asm_statement |
---|
[4d51835] | 1388 | // empty |
---|
[58dd019] | 1389 | { $$ = nullptr; } |
---|
[4d51835] | 1390 | | type_qualifier_list |
---|
| 1391 | ; |
---|
[51b7345] | 1392 | |
---|
| 1393 | type_qualifier_list: |
---|
[de62360d] | 1394 | // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration. |
---|
[4d51835] | 1395 | // |
---|
[de62360d] | 1396 | // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same |
---|
| 1397 | // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it |
---|
| 1398 | // appeared only once. |
---|
[4d51835] | 1399 | type_qualifier |
---|
| 1400 | | type_qualifier_list type_qualifier |
---|
| 1401 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1402 | ; |
---|
[51b7345] | 1403 | |
---|
| 1404 | type_qualifier: |
---|
[4d51835] | 1405 | type_qualifier_name |
---|
| 1406 | | attribute |
---|
| 1407 | ; |
---|
[51b7345] | 1408 | |
---|
| 1409 | type_qualifier_name: |
---|
[4d51835] | 1410 | CONST |
---|
[738e304] | 1411 | { $$ = DeclarationNode::newTypeQualifier( Type::Const ); } |
---|
[4d51835] | 1412 | | RESTRICT |
---|
[738e304] | 1413 | { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); } |
---|
[4d51835] | 1414 | | VOLATILE |
---|
[738e304] | 1415 | { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); } |
---|
[4d51835] | 1416 | | LVALUE // CFA |
---|
[738e304] | 1417 | { $$ = DeclarationNode::newTypeQualifier( Type::Lvalue ); } |
---|
[a7c90d4] | 1418 | | MUTEX |
---|
[738e304] | 1419 | { $$ = DeclarationNode::newTypeQualifier( Type::Mutex ); } |
---|
[4d51835] | 1420 | | ATOMIC |
---|
[738e304] | 1421 | { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); } |
---|
[4d51835] | 1422 | | FORALL '(' |
---|
| 1423 | { |
---|
| 1424 | typedefTable.enterScope(); |
---|
| 1425 | } |
---|
| 1426 | type_parameter_list ')' // CFA |
---|
| 1427 | { |
---|
| 1428 | typedefTable.leaveScope(); |
---|
| 1429 | $$ = DeclarationNode::newForall( $4 ); |
---|
| 1430 | } |
---|
| 1431 | ; |
---|
[51b7345] | 1432 | |
---|
| 1433 | declaration_qualifier_list: |
---|
[4d51835] | 1434 | storage_class_list |
---|
[de62360d] | 1435 | | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 ) |
---|
[4d51835] | 1436 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1437 | | declaration_qualifier_list type_qualifier_list storage_class_list |
---|
| 1438 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1439 | ; |
---|
[51b7345] | 1440 | |
---|
| 1441 | storage_class_list: |
---|
[de62360d] | 1442 | // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that |
---|
| 1443 | // only one of each is specified, except for inline, which can appear with the others. |
---|
[4d51835] | 1444 | // |
---|
[de62360d] | 1445 | // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration |
---|
| 1446 | // specifiers in a declaration. |
---|
[4d51835] | 1447 | storage_class |
---|
| 1448 | | storage_class_list storage_class |
---|
| 1449 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1450 | ; |
---|
[51b7345] | 1451 | |
---|
| 1452 | storage_class: |
---|
[4d51835] | 1453 | EXTERN |
---|
[68fe077a] | 1454 | { $$ = DeclarationNode::newStorageClass( Type::Extern ); } |
---|
[4d51835] | 1455 | | STATIC |
---|
[68fe077a] | 1456 | { $$ = DeclarationNode::newStorageClass( Type::Static ); } |
---|
[4d51835] | 1457 | | AUTO |
---|
[68fe077a] | 1458 | { $$ = DeclarationNode::newStorageClass( Type::Auto ); } |
---|
[4d51835] | 1459 | | REGISTER |
---|
[68fe077a] | 1460 | { $$ = DeclarationNode::newStorageClass( Type::Register ); } |
---|
[dd020c0] | 1461 | | THREADLOCAL // C11 |
---|
[68fe077a] | 1462 | { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); } |
---|
[dd020c0] | 1463 | // Put function specifiers here to simplify parsing rules, but separate them semantically. |
---|
[4d51835] | 1464 | | INLINE // C99 |
---|
[ddfd945] | 1465 | { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); } |
---|
[4d51835] | 1466 | | FORTRAN // C99 |
---|
[ddfd945] | 1467 | { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); } |
---|
[68cd1ce] | 1468 | | NORETURN // C11 |
---|
[ddfd945] | 1469 | { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); } |
---|
[4d51835] | 1470 | ; |
---|
[51b7345] | 1471 | |
---|
| 1472 | basic_type_name: |
---|
[4d51835] | 1473 | CHAR |
---|
| 1474 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); } |
---|
| 1475 | | DOUBLE |
---|
| 1476 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); } |
---|
| 1477 | | FLOAT |
---|
| 1478 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); } |
---|
| 1479 | | INT |
---|
| 1480 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); } |
---|
| 1481 | | LONG |
---|
[5b639ee] | 1482 | { $$ = DeclarationNode::newLength( DeclarationNode::Long ); } |
---|
[4d51835] | 1483 | | SHORT |
---|
[5b639ee] | 1484 | { $$ = DeclarationNode::newLength( DeclarationNode::Short ); } |
---|
[4d51835] | 1485 | | SIGNED |
---|
[5b639ee] | 1486 | { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); } |
---|
[4d51835] | 1487 | | UNSIGNED |
---|
[5b639ee] | 1488 | { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); } |
---|
[4d51835] | 1489 | | VOID |
---|
| 1490 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); } |
---|
| 1491 | | BOOL // C99 |
---|
| 1492 | { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); } |
---|
| 1493 | | COMPLEX // C99 |
---|
[5b639ee] | 1494 | { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); } |
---|
[4d51835] | 1495 | | IMAGINARY // C99 |
---|
[5b639ee] | 1496 | { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); } |
---|
[90c3b1c] | 1497 | | VALIST // GCC, __builtin_va_list |
---|
| 1498 | { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); } |
---|
[3a2128f] | 1499 | | ZERO_T |
---|
[148f7290] | 1500 | { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); } |
---|
[3a2128f] | 1501 | | ONE_T |
---|
[148f7290] | 1502 | { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); } |
---|
[4d51835] | 1503 | ; |
---|
[51b7345] | 1504 | |
---|
| 1505 | basic_declaration_specifier: |
---|
[4d51835] | 1506 | // A semantic check is necessary for conflicting storage classes. |
---|
| 1507 | basic_type_specifier |
---|
| 1508 | | declaration_qualifier_list basic_type_specifier |
---|
| 1509 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1510 | | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1511 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1512 | | basic_declaration_specifier storage_class type_qualifier_list |
---|
| 1513 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1514 | | basic_declaration_specifier storage_class basic_type_specifier |
---|
| 1515 | { $$ = $3->addQualifiers( $2 )->addType( $1 ); } |
---|
| 1516 | ; |
---|
[51b7345] | 1517 | |
---|
| 1518 | basic_type_specifier: |
---|
[4d51835] | 1519 | direct_type_name |
---|
| 1520 | | type_qualifier_list_opt indirect_type_name type_qualifier_list_opt |
---|
| 1521 | { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); } |
---|
| 1522 | ; |
---|
[51b7345] | 1523 | |
---|
| 1524 | direct_type_name: |
---|
[4d51835] | 1525 | // A semantic check is necessary for conflicting type qualifiers. |
---|
| 1526 | basic_type_name |
---|
| 1527 | | type_qualifier_list basic_type_name |
---|
| 1528 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1529 | | direct_type_name type_qualifier |
---|
| 1530 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1531 | | direct_type_name basic_type_name |
---|
| 1532 | { $$ = $1->addType( $2 ); } |
---|
| 1533 | ; |
---|
[51b7345] | 1534 | |
---|
| 1535 | indirect_type_name: |
---|
[4d51835] | 1536 | TYPEOF '(' type_name ')' // GCC: typeof(x) y; |
---|
| 1537 | { $$ = $3; } |
---|
| 1538 | | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y; |
---|
| 1539 | { $$ = DeclarationNode::newTypeof( $3 ); } |
---|
| 1540 | | ATTR_TYPEGENname '(' type_name ')' // CFA: e.g., @type(x) y; |
---|
| 1541 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1542 | | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y; |
---|
| 1543 | { $$ = DeclarationNode::newAttr( $1, $3 ); } |
---|
| 1544 | ; |
---|
[51b7345] | 1545 | |
---|
[d0ffed1] | 1546 | sue_declaration_specifier: // struct, union, enum + storage class + type specifier |
---|
[4d51835] | 1547 | sue_type_specifier |
---|
| 1548 | | declaration_qualifier_list sue_type_specifier |
---|
| 1549 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1550 | | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1551 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1552 | | sue_declaration_specifier storage_class type_qualifier_list |
---|
| 1553 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1554 | ; |
---|
[51b7345] | 1555 | |
---|
[d0ffed1] | 1556 | sue_type_specifier: // struct, union, enum + type specifier |
---|
| 1557 | elaborated_type |
---|
[c0aa336] | 1558 | | type_qualifier_list elaborated_type |
---|
[4d51835] | 1559 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1560 | | sue_type_specifier type_qualifier |
---|
| 1561 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1562 | ; |
---|
[51b7345] | 1563 | |
---|
[d0ffed1] | 1564 | sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier |
---|
| 1565 | sue_type_specifier_nobody |
---|
| 1566 | | declaration_qualifier_list sue_type_specifier_nobody |
---|
| 1567 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1568 | | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1569 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1570 | | sue_declaration_specifier_nobody storage_class type_qualifier_list |
---|
| 1571 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1572 | ; |
---|
| 1573 | |
---|
| 1574 | sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier |
---|
| 1575 | elaborated_type_nobody |
---|
| 1576 | | type_qualifier_list elaborated_type_nobody |
---|
| 1577 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1578 | | sue_type_specifier_nobody type_qualifier |
---|
| 1579 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1580 | ; |
---|
| 1581 | |
---|
[51b7345] | 1582 | typedef_declaration_specifier: |
---|
[4d51835] | 1583 | typedef_type_specifier |
---|
| 1584 | | declaration_qualifier_list typedef_type_specifier |
---|
| 1585 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1586 | | typedef_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1587 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1588 | | typedef_declaration_specifier storage_class type_qualifier_list |
---|
| 1589 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1590 | ; |
---|
[b87a5ed] | 1591 | |
---|
| 1592 | typedef_type_specifier: // typedef types |
---|
[4d51835] | 1593 | TYPEDEFname |
---|
| 1594 | { $$ = DeclarationNode::newFromTypedef( $1 ); } |
---|
| 1595 | | type_qualifier_list TYPEDEFname |
---|
| 1596 | { $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); } |
---|
| 1597 | | typedef_type_specifier type_qualifier |
---|
| 1598 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1599 | ; |
---|
[51b7345] | 1600 | |
---|
[d0ffed1] | 1601 | elaborated_type: // struct, union, enum |
---|
[c0aa336] | 1602 | aggregate_type |
---|
| 1603 | | enum_type |
---|
[4d51835] | 1604 | ; |
---|
[51b7345] | 1605 | |
---|
[d0ffed1] | 1606 | elaborated_type_nobody: // struct, union, enum - {...} |
---|
| 1607 | aggregate_type_nobody |
---|
| 1608 | | enum_type_nobody |
---|
| 1609 | ; |
---|
| 1610 | |
---|
| 1611 | aggregate_type: // struct, union |
---|
[c0aa336] | 1612 | aggregate_key attribute_list_opt '{' field_declaration_list '}' |
---|
[6f95000] | 1613 | { $$ = DeclarationNode::newAggregate( $1, new string( DeclarationNode::anonymous.newName() ), nullptr, $4, true )->addQualifiers( $2 ); } |
---|
[c0aa336] | 1614 | | aggregate_key attribute_list_opt no_attr_identifier_or_type_name |
---|
| 1615 | { typedefTable.makeTypedef( *$3 ); } |
---|
| 1616 | '{' field_declaration_list '}' |
---|
| 1617 | { $$ = DeclarationNode::newAggregate( $1, $3, nullptr, $6, true )->addQualifiers( $2 ); } |
---|
| 1618 | | aggregate_key attribute_list_opt '(' type_name_list ')' '{' field_declaration_list '}' // CFA |
---|
[6f95000] | 1619 | { $$ = DeclarationNode::newAggregate( $1, new string( DeclarationNode::anonymous.newName() ), $4, $7, false )->addQualifiers( $2 ); } |
---|
[d0ffed1] | 1620 | | aggregate_type_nobody |
---|
| 1621 | ; |
---|
| 1622 | |
---|
| 1623 | aggregate_type_nobody: // struct, union - {...} |
---|
| 1624 | aggregate_key attribute_list_opt no_attr_identifier_or_type_name |
---|
| 1625 | { |
---|
| 1626 | typedefTable.makeTypedef( *$3 ); |
---|
| 1627 | $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 ); |
---|
| 1628 | } |
---|
[c0aa336] | 1629 | | aggregate_key attribute_list_opt typegen_name // CFA, S/R conflict |
---|
| 1630 | { $$ = $3->addQualifiers( $2 ); } |
---|
[4d51835] | 1631 | ; |
---|
[51b7345] | 1632 | |
---|
| 1633 | aggregate_key: |
---|
[c0aa336] | 1634 | STRUCT |
---|
[4d51835] | 1635 | { $$ = DeclarationNode::Struct; } |
---|
[c0aa336] | 1636 | | UNION |
---|
[4d51835] | 1637 | { $$ = DeclarationNode::Union; } |
---|
[d3bc0ad] | 1638 | | COROUTINE |
---|
[409433da] | 1639 | { $$ = DeclarationNode::Coroutine; } |
---|
[d3bc0ad] | 1640 | | MONITOR |
---|
[409433da] | 1641 | { $$ = DeclarationNode::Monitor; } |
---|
[d3bc0ad] | 1642 | | THREAD |
---|
[409433da] | 1643 | { $$ = DeclarationNode::Thread; } |
---|
[4d51835] | 1644 | ; |
---|
[51b7345] | 1645 | |
---|
| 1646 | field_declaration_list: |
---|
[5d125e4] | 1647 | // empty |
---|
[58dd019] | 1648 | { $$ = nullptr; } |
---|
[4d51835] | 1649 | | field_declaration_list field_declaration |
---|
[a7741435] | 1650 | { $$ = $1 ? $1->appendList( $2 ) : $2; } |
---|
[4d51835] | 1651 | ; |
---|
[51b7345] | 1652 | |
---|
| 1653 | field_declaration: |
---|
[c0aa336] | 1654 | cfa_field_declaring_list ';' // CFA, new style field declaration |
---|
| 1655 | | EXTENSION cfa_field_declaring_list ';' // GCC |
---|
| 1656 | { |
---|
| 1657 | distExt( $2 ); // mark all fields in list |
---|
[8e9cbb2] | 1658 | $$ = $2; |
---|
| 1659 | } |
---|
[c0aa336] | 1660 | | type_specifier field_declaring_list ';' |
---|
| 1661 | { |
---|
| 1662 | $$ = distAttr( $1, $2 ); } |
---|
| 1663 | | EXTENSION type_specifier field_declaring_list ';' // GCC |
---|
| 1664 | { |
---|
| 1665 | distExt( $3 ); // mark all fields in list |
---|
| 1666 | $$ = distAttr( $2, $3 ); |
---|
| 1667 | } |
---|
[4d51835] | 1668 | ; |
---|
[b87a5ed] | 1669 | |
---|
[c0aa336] | 1670 | cfa_field_declaring_list: // CFA, new style field declaration |
---|
| 1671 | cfa_abstract_declarator_tuple // CFA, no field name |
---|
| 1672 | | cfa_abstract_declarator_tuple no_attr_identifier_or_type_name |
---|
[4d51835] | 1673 | { $$ = $1->addName( $2 ); } |
---|
[c0aa336] | 1674 | | cfa_field_declaring_list ',' no_attr_identifier_or_type_name |
---|
[4d51835] | 1675 | { $$ = $1->appendList( $1->cloneType( $3 ) ); } |
---|
[c0aa336] | 1676 | | cfa_field_declaring_list ',' // CFA, no field name |
---|
[4d51835] | 1677 | { $$ = $1->appendList( $1->cloneType( 0 ) ); } |
---|
| 1678 | ; |
---|
[51b7345] | 1679 | |
---|
| 1680 | field_declaring_list: |
---|
[c0aa336] | 1681 | field_declarator |
---|
[4d51835] | 1682 | | field_declaring_list ',' attribute_list_opt field_declarator |
---|
[c0aa336] | 1683 | { $$ = $1->appendList( $4->addQualifiers( $3 ) ); } |
---|
[4d51835] | 1684 | ; |
---|
[51b7345] | 1685 | |
---|
| 1686 | field_declarator: |
---|
[4d51835] | 1687 | // empty |
---|
| 1688 | { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name |
---|
[6f95000] | 1689 | // '@' |
---|
| 1690 | // { $$ = DeclarationNode::newName( new string( DeclarationNode::anonymous.newName() ) ); } // CFA, no field name |
---|
[4d51835] | 1691 | | bit_subrange_size // no field name |
---|
| 1692 | { $$ = DeclarationNode::newBitfield( $1 ); } |
---|
| 1693 | | variable_declarator bit_subrange_size_opt |
---|
| 1694 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1695 | { $$ = $1->addBitfield( $2 ); } |
---|
[c6b1105] | 1696 | | variable_type_redeclarator bit_subrange_size_opt |
---|
[4d51835] | 1697 | // A semantic check is required to ensure bit_subrange only appears on base type int. |
---|
| 1698 | { $$ = $1->addBitfield( $2 ); } |
---|
| 1699 | | variable_abstract_declarator // CFA, no field name |
---|
| 1700 | ; |
---|
[51b7345] | 1701 | |
---|
| 1702 | bit_subrange_size_opt: |
---|
[4d51835] | 1703 | // empty |
---|
[58dd019] | 1704 | { $$ = nullptr; } |
---|
[4d51835] | 1705 | | bit_subrange_size |
---|
| 1706 | { $$ = $1; } |
---|
| 1707 | ; |
---|
[51b7345] | 1708 | |
---|
| 1709 | bit_subrange_size: |
---|
[4d51835] | 1710 | ':' constant_expression |
---|
| 1711 | { $$ = $2; } |
---|
| 1712 | ; |
---|
[51b7345] | 1713 | |
---|
[d0ffed1] | 1714 | enum_type: // enum |
---|
[c0aa336] | 1715 | ENUM attribute_list_opt '{' enumerator_list comma_opt '}' |
---|
[6f95000] | 1716 | { $$ = DeclarationNode::newEnum( new string( DeclarationNode::anonymous.newName() ), $4, true )->addQualifiers( $2 ); } |
---|
[c0aa336] | 1717 | | ENUM attribute_list_opt no_attr_identifier_or_type_name |
---|
[d0ffed1] | 1718 | { typedefTable.makeTypedef( *$3 ); } |
---|
| 1719 | '{' enumerator_list comma_opt '}' |
---|
| 1720 | { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); } |
---|
| 1721 | | enum_type_nobody |
---|
| 1722 | ; |
---|
| 1723 | |
---|
| 1724 | enum_type_nobody: // enum - {...} |
---|
| 1725 | ENUM attribute_list_opt no_attr_identifier_or_type_name |
---|
[45161b4d] | 1726 | { |
---|
[c0aa336] | 1727 | typedefTable.makeTypedef( *$3 ); |
---|
[ca1a547] | 1728 | $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 ); |
---|
[45161b4d] | 1729 | } |
---|
[4d51835] | 1730 | ; |
---|
[51b7345] | 1731 | |
---|
| 1732 | enumerator_list: |
---|
[2871210] | 1733 | no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1734 | { $$ = DeclarationNode::newEnumConstant( $1, $2 ); } |
---|
[2871210] | 1735 | | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt |
---|
[4d51835] | 1736 | { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); } |
---|
| 1737 | ; |
---|
[51b7345] | 1738 | |
---|
| 1739 | enumerator_value_opt: |
---|
[4d51835] | 1740 | // empty |
---|
[58dd019] | 1741 | { $$ = nullptr; } |
---|
[4d51835] | 1742 | | '=' constant_expression |
---|
| 1743 | { $$ = $2; } |
---|
| 1744 | ; |
---|
[51b7345] | 1745 | |
---|
[c11e31c] | 1746 | // Minimum of one parameter after which ellipsis is allowed only at the end. |
---|
[51b7345] | 1747 | |
---|
[c0aa336] | 1748 | cfa_parameter_type_list_opt: // CFA |
---|
[4d51835] | 1749 | // empty |
---|
[58dd019] | 1750 | { $$ = nullptr; } |
---|
[c0aa336] | 1751 | | cfa_parameter_type_list |
---|
[4d51835] | 1752 | ; |
---|
[b87a5ed] | 1753 | |
---|
[c0aa336] | 1754 | cfa_parameter_type_list: // CFA, abstract + real |
---|
| 1755 | cfa_abstract_parameter_list |
---|
| 1756 | | cfa_parameter_list |
---|
| 1757 | | cfa_parameter_list pop ',' push cfa_abstract_parameter_list |
---|
[4d51835] | 1758 | { $$ = $1->appendList( $5 ); } |
---|
[c0aa336] | 1759 | | cfa_abstract_parameter_list pop ',' push ELLIPSIS |
---|
[4d51835] | 1760 | { $$ = $1->addVarArgs(); } |
---|
[c0aa336] | 1761 | | cfa_parameter_list pop ',' push ELLIPSIS |
---|
[4d51835] | 1762 | { $$ = $1->addVarArgs(); } |
---|
| 1763 | ; |
---|
[b87a5ed] | 1764 | |
---|
[c0aa336] | 1765 | cfa_parameter_list: // CFA |
---|
| 1766 | // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is |
---|
| 1767 | // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'. |
---|
| 1768 | cfa_parameter_declaration |
---|
| 1769 | | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration |
---|
[4d51835] | 1770 | { $$ = $1->appendList( $5 ); } |
---|
[c0aa336] | 1771 | | cfa_parameter_list pop ',' push cfa_parameter_declaration |
---|
[4d51835] | 1772 | { $$ = $1->appendList( $5 ); } |
---|
[c0aa336] | 1773 | | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration |
---|
[4d51835] | 1774 | { $$ = $1->appendList( $5 )->appendList( $9 ); } |
---|
| 1775 | ; |
---|
[b87a5ed] | 1776 | |
---|
[c0aa336] | 1777 | cfa_abstract_parameter_list: // CFA, new & old style abstract |
---|
| 1778 | cfa_abstract_parameter_declaration |
---|
| 1779 | | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration |
---|
[4d51835] | 1780 | { $$ = $1->appendList( $5 ); } |
---|
| 1781 | ; |
---|
[51b7345] | 1782 | |
---|
| 1783 | parameter_type_list_opt: |
---|
[4d51835] | 1784 | // empty |
---|
[58dd019] | 1785 | { $$ = nullptr; } |
---|
[4d51835] | 1786 | | parameter_type_list |
---|
| 1787 | ; |
---|
[51b7345] | 1788 | |
---|
| 1789 | parameter_type_list: |
---|
[4d51835] | 1790 | parameter_list |
---|
| 1791 | | parameter_list pop ',' push ELLIPSIS |
---|
| 1792 | { $$ = $1->addVarArgs(); } |
---|
| 1793 | ; |
---|
[b87a5ed] | 1794 | |
---|
| 1795 | parameter_list: // abstract + real |
---|
[4d51835] | 1796 | abstract_parameter_declaration |
---|
| 1797 | | parameter_declaration |
---|
| 1798 | | parameter_list pop ',' push abstract_parameter_declaration |
---|
| 1799 | { $$ = $1->appendList( $5 ); } |
---|
| 1800 | | parameter_list pop ',' push parameter_declaration |
---|
| 1801 | { $$ = $1->appendList( $5 ); } |
---|
| 1802 | ; |
---|
[51b7345] | 1803 | |
---|
[de62360d] | 1804 | // Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics |
---|
[2871210] | 1805 | // for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes. |
---|
[51b7345] | 1806 | |
---|
[c0aa336] | 1807 | cfa_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1808 | parameter_declaration |
---|
[c0aa336] | 1809 | | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1810 | { $$ = $1->addName( $2 ); } |
---|
[c0aa336] | 1811 | | cfa_abstract_tuple identifier_or_type_name assignment_opt |
---|
| 1812 | // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator). |
---|
[4d51835] | 1813 | { $$ = $1->addName( $2 ); } |
---|
[c0aa336] | 1814 | | type_qualifier_list cfa_abstract_tuple identifier_or_type_name assignment_opt |
---|
[4d51835] | 1815 | { $$ = $2->addName( $3 )->addQualifiers( $1 ); } |
---|
[c0aa336] | 1816 | | cfa_function_specifier |
---|
[4d51835] | 1817 | ; |
---|
[b87a5ed] | 1818 | |
---|
[c0aa336] | 1819 | cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration |
---|
[4d51835] | 1820 | abstract_parameter_declaration |
---|
[c0aa336] | 1821 | | cfa_identifier_parameter_declarator_no_tuple |
---|
| 1822 | | cfa_abstract_tuple |
---|
| 1823 | // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator). |
---|
| 1824 | | type_qualifier_list cfa_abstract_tuple |
---|
[4d51835] | 1825 | { $$ = $2->addQualifiers( $1 ); } |
---|
[c0aa336] | 1826 | | cfa_abstract_function |
---|
[4d51835] | 1827 | ; |
---|
[51b7345] | 1828 | |
---|
| 1829 | parameter_declaration: |
---|
[d0ffed1] | 1830 | // No SUE declaration in parameter list. |
---|
| 1831 | declaration_specifier_nobody identifier_parameter_declarator assignment_opt |
---|
[4d51835] | 1832 | { |
---|
| 1833 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[a7741435] | 1834 | $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); |
---|
[4d51835] | 1835 | } |
---|
[d0ffed1] | 1836 | | declaration_specifier_nobody type_parameter_redeclarator assignment_opt |
---|
[4d51835] | 1837 | { |
---|
| 1838 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
[a7741435] | 1839 | $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); |
---|
[4d51835] | 1840 | } |
---|
| 1841 | ; |
---|
[51b7345] | 1842 | |
---|
| 1843 | abstract_parameter_declaration: |
---|
[d0ffed1] | 1844 | declaration_specifier_nobody assignment_opt |
---|
[e7cc8cb] | 1845 | { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); } |
---|
[d0ffed1] | 1846 | | declaration_specifier_nobody abstract_parameter_declarator assignment_opt |
---|
[e7cc8cb] | 1847 | { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); } |
---|
[4d51835] | 1848 | ; |
---|
[51b7345] | 1849 | |
---|
[c11e31c] | 1850 | // ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a |
---|
[de62360d] | 1851 | // parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on |
---|
| 1852 | // identifiers. The ANSI-style parameter-list can redefine a typedef name. |
---|
[51b7345] | 1853 | |
---|
[b87a5ed] | 1854 | identifier_list: // K&R-style parameter list => no types |
---|
[4d51835] | 1855 | no_attr_identifier |
---|
| 1856 | { $$ = DeclarationNode::newName( $1 ); } |
---|
| 1857 | | identifier_list ',' no_attr_identifier |
---|
| 1858 | { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); } |
---|
| 1859 | ; |
---|
[51b7345] | 1860 | |
---|
[2871210] | 1861 | identifier_or_type_name: |
---|
[4d51835] | 1862 | identifier |
---|
| 1863 | | TYPEDEFname |
---|
| 1864 | | TYPEGENname |
---|
| 1865 | ; |
---|
[51b7345] | 1866 | |
---|
[2871210] | 1867 | no_01_identifier_or_type_name: |
---|
[4d51835] | 1868 | no_01_identifier |
---|
| 1869 | | TYPEDEFname |
---|
| 1870 | | TYPEGENname |
---|
| 1871 | ; |
---|
[51b7345] | 1872 | |
---|
[2871210] | 1873 | no_attr_identifier_or_type_name: |
---|
[4d51835] | 1874 | no_attr_identifier |
---|
| 1875 | | TYPEDEFname |
---|
[721f17a] | 1876 | | TYPEGENname |
---|
[4d51835] | 1877 | ; |
---|
[b87a5ed] | 1878 | |
---|
| 1879 | type_name_no_function: // sizeof, alignof, cast (constructor) |
---|
[c0aa336] | 1880 | cfa_abstract_declarator_tuple // CFA |
---|
[4d51835] | 1881 | | type_specifier |
---|
[c0aa336] | 1882 | | type_specifier abstract_declarator |
---|
[4d51835] | 1883 | { $$ = $2->addType( $1 ); } |
---|
| 1884 | ; |
---|
[b87a5ed] | 1885 | |
---|
| 1886 | type_name: // typeof, assertion |
---|
[c0aa336] | 1887 | type_name_no_function |
---|
| 1888 | | cfa_abstract_function // CFA |
---|
[4d51835] | 1889 | ; |
---|
[51b7345] | 1890 | |
---|
| 1891 | initializer_opt: |
---|
[4d51835] | 1892 | // empty |
---|
[58dd019] | 1893 | { $$ = nullptr; } |
---|
[2871210] | 1894 | | '=' initializer |
---|
| 1895 | { $$ = $2; } |
---|
[097e2b0] | 1896 | | ATassign initializer |
---|
[974906e2] | 1897 | { $$ = $2->set_maybeConstructed( false ); } |
---|
[4d51835] | 1898 | ; |
---|
[51b7345] | 1899 | |
---|
| 1900 | initializer: |
---|
[de62360d] | 1901 | assignment_expression { $$ = new InitializerNode( $1 ); } |
---|
| 1902 | | '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); } |
---|
[4d51835] | 1903 | ; |
---|
[51b7345] | 1904 | |
---|
| 1905 | initializer_list: |
---|
[097e2b0] | 1906 | // empty |
---|
[58dd019] | 1907 | { $$ = nullptr; } |
---|
[097e2b0] | 1908 | | initializer |
---|
[4d51835] | 1909 | | designation initializer { $$ = $2->set_designators( $1 ); } |
---|
[1d4580a] | 1910 | | initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); } |
---|
[4d51835] | 1911 | | initializer_list ',' designation initializer |
---|
[1d4580a] | 1912 | { $$ = (InitializerNode *)( $1->set_last( $4->set_designators( $3 ) ) ); } |
---|
[4d51835] | 1913 | ; |
---|
[b87a5ed] | 1914 | |
---|
[de62360d] | 1915 | // There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of |
---|
| 1916 | // '=' to separator the designator from the initializer value, as in: |
---|
[c11e31c] | 1917 | // |
---|
[b87a5ed] | 1918 | // int x[10] = { [1] = 3 }; |
---|
[c11e31c] | 1919 | // |
---|
[de62360d] | 1920 | // The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA |
---|
| 1921 | // changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for |
---|
| 1922 | // field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to |
---|
| 1923 | // shift/reduce conflicts |
---|
[51b7345] | 1924 | |
---|
| 1925 | designation: |
---|
[4d51835] | 1926 | designator_list ':' // C99, CFA uses ":" instead of "=" |
---|
[2871210] | 1927 | | no_attr_identifier_or_type_name ':' // GCC, field name |
---|
[d1625f8] | 1928 | { $$ = new ExpressionNode( build_varref( $1 ) ); } |
---|
[4d51835] | 1929 | ; |
---|
[51b7345] | 1930 | |
---|
[b87a5ed] | 1931 | designator_list: // C99 |
---|
[4d51835] | 1932 | designator |
---|
[2871210] | 1933 | | designator_list designator |
---|
[1d4580a] | 1934 | { $$ = (ExpressionNode *)( $1->set_last( $2 ) ); } |
---|
[d1625f8] | 1935 | //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); } |
---|
[4d51835] | 1936 | ; |
---|
[51b7345] | 1937 | |
---|
| 1938 | designator: |
---|
[d1625f8] | 1939 | '.' no_attr_identifier_or_type_name // C99, field name |
---|
| 1940 | { $$ = new ExpressionNode( build_varref( $2 ) ); } |
---|
[4d51835] | 1941 | | '[' push assignment_expression pop ']' // C99, single array element |
---|
[de62360d] | 1942 | // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple. |
---|
[d1625f8] | 1943 | { $$ = $3; } |
---|
[4d51835] | 1944 | | '[' push subrange pop ']' // CFA, multiple array elements |
---|
[d1625f8] | 1945 | { $$ = $3; } |
---|
[4d51835] | 1946 | | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements |
---|
[d1625f8] | 1947 | { $$ = new ExpressionNode( build_range( $3, $5 ) ); } |
---|
[4d51835] | 1948 | | '.' '[' push field_list pop ']' // CFA, tuple field selector |
---|
[d1625f8] | 1949 | { $$ = $4; } |
---|
[4d51835] | 1950 | ; |
---|
[51b7345] | 1951 | |
---|
[de62360d] | 1952 | // The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters, |
---|
| 1953 | // rather than an object-oriented type system. This required four groups of extensions: |
---|
[c11e31c] | 1954 | // |
---|
| 1955 | // Overloading: function, data, and operator identifiers may be overloaded. |
---|
| 1956 | // |
---|
[de62360d] | 1957 | // Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object |
---|
| 1958 | // and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide |
---|
| 1959 | // definitions of new types. Type declarations with storage class "extern" provide opaque types. |
---|
[c11e31c] | 1960 | // |
---|
[de62360d] | 1961 | // Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call |
---|
| 1962 | // site. A polymorphic function is not a template; it is a function, with an address and a type. |
---|
[c11e31c] | 1963 | // |
---|
| 1964 | // Specifications and Assertions: Specifications are collections of declarations parameterized by one or more |
---|
[de62360d] | 1965 | // types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass |
---|
| 1966 | // hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or |
---|
| 1967 | // types provide the operations declared by a specification. Assertions are normally used to declare requirements |
---|
| 1968 | // on type arguments of polymorphic functions. |
---|
[c11e31c] | 1969 | |
---|
[b87a5ed] | 1970 | typegen_declaration_specifier: // CFA |
---|
[4d51835] | 1971 | typegen_type_specifier |
---|
| 1972 | | declaration_qualifier_list typegen_type_specifier |
---|
| 1973 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 1974 | | typegen_declaration_specifier storage_class // remaining OBSOLESCENT (see 2) |
---|
| 1975 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1976 | | typegen_declaration_specifier storage_class type_qualifier_list |
---|
| 1977 | { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); } |
---|
| 1978 | ; |
---|
[b87a5ed] | 1979 | |
---|
| 1980 | typegen_type_specifier: // CFA |
---|
[2871210] | 1981 | typegen_name |
---|
| 1982 | | type_qualifier_list typegen_name |
---|
| 1983 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 1984 | | typegen_type_specifier type_qualifier |
---|
| 1985 | { $$ = $1->addQualifiers( $2 ); } |
---|
| 1986 | ; |
---|
[b87a5ed] | 1987 | |
---|
[2871210] | 1988 | typegen_name: // CFA |
---|
| 1989 | TYPEGENname '(' type_name_list ')' |
---|
| 1990 | { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); } |
---|
| 1991 | ; |
---|
| 1992 | |
---|
[b87a5ed] | 1993 | type_parameter_list: // CFA |
---|
[4d51835] | 1994 | type_parameter assignment_opt |
---|
| 1995 | | type_parameter_list ',' type_parameter assignment_opt |
---|
| 1996 | { $$ = $1->appendList( $3 ); } |
---|
| 1997 | ; |
---|
[b87a5ed] | 1998 | |
---|
| 1999 | type_parameter: // CFA |
---|
[2871210] | 2000 | type_class no_attr_identifier_or_type_name |
---|
| 2001 | { typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); } |
---|
[4d51835] | 2002 | assertion_list_opt |
---|
| 2003 | { $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); } |
---|
| 2004 | | type_specifier identifier_parameter_declarator |
---|
| 2005 | ; |
---|
[b87a5ed] | 2006 | |
---|
| 2007 | type_class: // CFA |
---|
[4040425] | 2008 | OTYPE |
---|
[5b639ee] | 2009 | { $$ = DeclarationNode::Otype; } |
---|
[4d51835] | 2010 | | DTYPE |
---|
| 2011 | { $$ = DeclarationNode::Dtype; } |
---|
[8f60f0b] | 2012 | | FTYPE |
---|
| 2013 | { $$ = DeclarationNode::Ftype; } |
---|
| 2014 | | TTYPE |
---|
| 2015 | { $$ = DeclarationNode::Ttype; } |
---|
[4d51835] | 2016 | ; |
---|
[b87a5ed] | 2017 | |
---|
| 2018 | assertion_list_opt: // CFA |
---|
[4d51835] | 2019 | // empty |
---|
[58dd019] | 2020 | { $$ = nullptr; } |
---|
[4d51835] | 2021 | | assertion_list_opt assertion |
---|
[a7741435] | 2022 | { $$ = $1 ? $1->appendList( $2 ) : $2; } |
---|
[4d51835] | 2023 | ; |
---|
[b87a5ed] | 2024 | |
---|
| 2025 | assertion: // CFA |
---|
[2871210] | 2026 | '|' no_attr_identifier_or_type_name '(' type_name_list ')' |
---|
[4d51835] | 2027 | { |
---|
[4040425] | 2028 | typedefTable.openTrait( *$2 ); |
---|
| 2029 | $$ = DeclarationNode::newTraitUse( $2, $4 ); |
---|
[4d51835] | 2030 | } |
---|
[4040425] | 2031 | | '|' '{' push trait_declaration_list '}' |
---|
[4d51835] | 2032 | { $$ = $4; } |
---|
[4040425] | 2033 | | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list '}' '(' type_name_list ')' |
---|
[58dd019] | 2034 | { $$ = nullptr; } |
---|
[4d51835] | 2035 | ; |
---|
[b87a5ed] | 2036 | |
---|
| 2037 | type_name_list: // CFA |
---|
[4d51835] | 2038 | type_name |
---|
[d1625f8] | 2039 | { $$ = new ExpressionNode( build_typevalue( $1 ) ); } |
---|
[4d51835] | 2040 | | assignment_expression |
---|
| 2041 | | type_name_list ',' type_name |
---|
[1d4580a] | 2042 | { $$ = (ExpressionNode *)( $1->set_last( new ExpressionNode( build_typevalue( $3 ) ) ) ); } |
---|
[4d51835] | 2043 | | type_name_list ',' assignment_expression |
---|
[1d4580a] | 2044 | { $$ = (ExpressionNode *)( $1->set_last( $3 )); } |
---|
[4d51835] | 2045 | ; |
---|
[b87a5ed] | 2046 | |
---|
| 2047 | type_declaring_list: // CFA |
---|
[4040425] | 2048 | OTYPE type_declarator |
---|
[4d51835] | 2049 | { $$ = $2; } |
---|
[4040425] | 2050 | | storage_class_list OTYPE type_declarator |
---|
[4d51835] | 2051 | { $$ = $3->addQualifiers( $1 ); } |
---|
| 2052 | | type_declaring_list ',' type_declarator |
---|
[a7c90d4] | 2053 | { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); } |
---|
[4d51835] | 2054 | ; |
---|
[b87a5ed] | 2055 | |
---|
| 2056 | type_declarator: // CFA |
---|
[4d51835] | 2057 | type_declarator_name assertion_list_opt |
---|
| 2058 | { $$ = $1->addAssertions( $2 ); } |
---|
| 2059 | | type_declarator_name assertion_list_opt '=' type_name |
---|
| 2060 | { $$ = $1->addAssertions( $2 )->addType( $4 ); } |
---|
| 2061 | ; |
---|
[b87a5ed] | 2062 | |
---|
| 2063 | type_declarator_name: // CFA |
---|
[2871210] | 2064 | no_attr_identifier_or_type_name |
---|
[4d51835] | 2065 | { |
---|
[de62360d] | 2066 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TD ); |
---|
[4d51835] | 2067 | $$ = DeclarationNode::newTypeDecl( $1, 0 ); |
---|
| 2068 | } |
---|
[2871210] | 2069 | | no_01_identifier_or_type_name '(' push type_parameter_list pop ')' |
---|
[4d51835] | 2070 | { |
---|
[de62360d] | 2071 | typedefTable.addToEnclosingScope( *$1, TypedefTable::TG ); |
---|
[4d51835] | 2072 | $$ = DeclarationNode::newTypeDecl( $1, $4 ); |
---|
| 2073 | } |
---|
| 2074 | ; |
---|
[b87a5ed] | 2075 | |
---|
[4040425] | 2076 | trait_specifier: // CFA |
---|
| 2077 | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}' |
---|
[4d51835] | 2078 | { |
---|
[de62360d] | 2079 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 2080 | $$ = DeclarationNode::newTrait( $2, $5, 0 ); |
---|
[4d51835] | 2081 | } |
---|
[4040425] | 2082 | | TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' |
---|
[4d51835] | 2083 | { |
---|
[4040425] | 2084 | typedefTable.enterTrait( *$2 ); |
---|
[4d51835] | 2085 | typedefTable.enterScope(); |
---|
| 2086 | } |
---|
[4040425] | 2087 | trait_declaration_list '}' |
---|
[4d51835] | 2088 | { |
---|
[4040425] | 2089 | typedefTable.leaveTrait(); |
---|
[de62360d] | 2090 | typedefTable.addToEnclosingScope( *$2, TypedefTable::ID ); |
---|
[4040425] | 2091 | $$ = DeclarationNode::newTrait( $2, $5, $10 ); |
---|
[4d51835] | 2092 | } |
---|
| 2093 | ; |
---|
[b87a5ed] | 2094 | |
---|
[4040425] | 2095 | trait_declaration_list: // CFA |
---|
| 2096 | trait_declaration |
---|
| 2097 | | trait_declaration_list push trait_declaration |
---|
[4d51835] | 2098 | { $$ = $1->appendList( $3 ); } |
---|
| 2099 | ; |
---|
[b87a5ed] | 2100 | |
---|
[4040425] | 2101 | trait_declaration: // CFA |
---|
[c0aa336] | 2102 | cfa_trait_declaring_list pop ';' |
---|
[4040425] | 2103 | | trait_declaring_list pop ';' |
---|
[4d51835] | 2104 | ; |
---|
[b87a5ed] | 2105 | |
---|
[c0aa336] | 2106 | cfa_trait_declaring_list: // CFA |
---|
| 2107 | cfa_variable_specifier |
---|
[4d51835] | 2108 | { |
---|
| 2109 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 2110 | $$ = $1; |
---|
| 2111 | } |
---|
[c0aa336] | 2112 | | cfa_function_specifier |
---|
[4d51835] | 2113 | { |
---|
| 2114 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 2115 | $$ = $1; |
---|
| 2116 | } |
---|
[c0aa336] | 2117 | | cfa_trait_declaring_list pop ',' push identifier_or_type_name |
---|
[4d51835] | 2118 | { |
---|
[de62360d] | 2119 | typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID ); |
---|
[4d51835] | 2120 | $$ = $1->appendList( $1->cloneType( $5 ) ); |
---|
| 2121 | } |
---|
| 2122 | ; |
---|
[b87a5ed] | 2123 | |
---|
[4040425] | 2124 | trait_declaring_list: // CFA |
---|
[4d51835] | 2125 | type_specifier declarator |
---|
| 2126 | { |
---|
| 2127 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 2128 | $$ = $2->addType( $1 ); |
---|
| 2129 | } |
---|
[4040425] | 2130 | | trait_declaring_list pop ',' push declarator |
---|
[4d51835] | 2131 | { |
---|
| 2132 | typedefTable.addToEnclosingScope2( TypedefTable::ID ); |
---|
| 2133 | $$ = $1->appendList( $1->cloneBaseType( $5 ) ); |
---|
| 2134 | } |
---|
| 2135 | ; |
---|
[51b7345] | 2136 | |
---|
[c11e31c] | 2137 | //***************************** EXTERNAL DEFINITIONS ***************************** |
---|
[51b7345] | 2138 | |
---|
| 2139 | translation_unit: |
---|
[4d51835] | 2140 | // empty |
---|
| 2141 | {} // empty input file |
---|
| 2142 | | external_definition_list |
---|
[a7741435] | 2143 | { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; } |
---|
[4d51835] | 2144 | ; |
---|
[51b7345] | 2145 | |
---|
| 2146 | external_definition_list: |
---|
[4d51835] | 2147 | external_definition |
---|
| 2148 | | external_definition_list push external_definition |
---|
[a7741435] | 2149 | { $$ = $1 ? $1->appendList( $3 ) : $3; } |
---|
[4d51835] | 2150 | ; |
---|
[51b7345] | 2151 | |
---|
| 2152 | external_definition_list_opt: |
---|
[4d51835] | 2153 | // empty |
---|
[58dd019] | 2154 | { $$ = nullptr; } |
---|
[4d51835] | 2155 | | external_definition_list |
---|
| 2156 | ; |
---|
[51b7345] | 2157 | |
---|
| 2158 | external_definition: |
---|
[4d51835] | 2159 | declaration |
---|
| 2160 | | external_function_definition |
---|
[e994912] | 2161 | | ASM '(' string_literal ')' ';' // GCC, global assembler statement |
---|
| 2162 | { |
---|
| 2163 | $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asmstmt( false, $3, 0 ) ) ); |
---|
| 2164 | } |
---|
[c0aa336] | 2165 | | EXTERN STRINGliteral // C++-style linkage specifier |
---|
[4d51835] | 2166 | { |
---|
[3b8e52c] | 2167 | linkageStack.push( linkage ); // handle nested extern "C"/"Cforall" |
---|
[faddbd8] | 2168 | linkage = LinkageSpec::linkageCheck( $2 ); |
---|
[4d51835] | 2169 | } |
---|
[c0aa336] | 2170 | '{' external_definition_list_opt '}' |
---|
[4d51835] | 2171 | { |
---|
| 2172 | linkage = linkageStack.top(); |
---|
| 2173 | linkageStack.pop(); |
---|
| 2174 | $$ = $5; |
---|
| 2175 | } |
---|
[c0aa336] | 2176 | | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown |
---|
| 2177 | { |
---|
| 2178 | distExt( $2 ); // mark all fields in list |
---|
[8e9cbb2] | 2179 | $$ = $2; |
---|
| 2180 | } |
---|
[4d51835] | 2181 | ; |
---|
| 2182 | |
---|
| 2183 | external_function_definition: |
---|
| 2184 | function_definition |
---|
[de62360d] | 2185 | // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of |
---|
[c6b1105] | 2186 | // legacy code with global functions missing the type-specifier for the return type, and assuming "int". |
---|
| 2187 | // Parsing is possible because function_definition does not appear in the context of an expression (nested |
---|
| 2188 | // functions preclude this concession, i.e., all nested function must have a return type). A function prototype |
---|
| 2189 | // declaration must still have a type_specifier. OBSOLESCENT (see 1) |
---|
[4d51835] | 2190 | | function_declarator compound_statement |
---|
| 2191 | { |
---|
| 2192 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2193 | typedefTable.leaveScope(); |
---|
| 2194 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2195 | } |
---|
[c0aa336] | 2196 | | KR_function_declarator push KR_declaration_list_opt compound_statement |
---|
[4d51835] | 2197 | { |
---|
| 2198 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2199 | typedefTable.leaveScope(); |
---|
| 2200 | $$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 ); |
---|
| 2201 | } |
---|
| 2202 | ; |
---|
[51b7345] | 2203 | |
---|
| 2204 | function_definition: |
---|
[c0aa336] | 2205 | cfa_function_declaration compound_statement // CFA |
---|
[4d51835] | 2206 | { |
---|
| 2207 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2208 | typedefTable.leaveScope(); |
---|
| 2209 | $$ = $1->addFunctionBody( $2 ); |
---|
| 2210 | } |
---|
| 2211 | | declaration_specifier function_declarator compound_statement |
---|
| 2212 | { |
---|
| 2213 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2214 | typedefTable.leaveScope(); |
---|
| 2215 | $$ = $2->addFunctionBody( $3 )->addType( $1 ); |
---|
| 2216 | } |
---|
| 2217 | | type_qualifier_list function_declarator compound_statement |
---|
| 2218 | { |
---|
| 2219 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2220 | typedefTable.leaveScope(); |
---|
| 2221 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2222 | } |
---|
| 2223 | | declaration_qualifier_list function_declarator compound_statement |
---|
| 2224 | { |
---|
| 2225 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2226 | typedefTable.leaveScope(); |
---|
| 2227 | $$ = $2->addFunctionBody( $3 )->addQualifiers( $1 ); |
---|
| 2228 | } |
---|
| 2229 | | declaration_qualifier_list type_qualifier_list function_declarator compound_statement |
---|
| 2230 | { |
---|
| 2231 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2232 | typedefTable.leaveScope(); |
---|
| 2233 | $$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2234 | } |
---|
| 2235 | |
---|
| 2236 | // Old-style K&R function definition, OBSOLESCENT (see 4) |
---|
[c0aa336] | 2237 | | declaration_specifier KR_function_declarator push KR_declaration_list_opt compound_statement |
---|
[4d51835] | 2238 | { |
---|
| 2239 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2240 | typedefTable.leaveScope(); |
---|
| 2241 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 ); |
---|
| 2242 | } |
---|
[c0aa336] | 2243 | | type_qualifier_list KR_function_declarator push KR_declaration_list_opt compound_statement |
---|
[4d51835] | 2244 | { |
---|
| 2245 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2246 | typedefTable.leaveScope(); |
---|
| 2247 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2248 | } |
---|
| 2249 | |
---|
| 2250 | // Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) |
---|
[c0aa336] | 2251 | | declaration_qualifier_list KR_function_declarator push KR_declaration_list_opt compound_statement |
---|
[4d51835] | 2252 | { |
---|
| 2253 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2254 | typedefTable.leaveScope(); |
---|
| 2255 | $$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 ); |
---|
| 2256 | } |
---|
[c0aa336] | 2257 | | declaration_qualifier_list type_qualifier_list KR_function_declarator push KR_declaration_list_opt compound_statement |
---|
[4d51835] | 2258 | { |
---|
| 2259 | typedefTable.addToEnclosingScope( TypedefTable::ID ); |
---|
| 2260 | typedefTable.leaveScope(); |
---|
| 2261 | $$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 ); |
---|
| 2262 | } |
---|
| 2263 | ; |
---|
[51b7345] | 2264 | |
---|
| 2265 | declarator: |
---|
[4d51835] | 2266 | variable_declarator |
---|
[c6b1105] | 2267 | | variable_type_redeclarator |
---|
[4d51835] | 2268 | | function_declarator |
---|
| 2269 | ; |
---|
[51b7345] | 2270 | |
---|
| 2271 | subrange: |
---|
[4d51835] | 2272 | constant_expression '~' constant_expression // CFA, integer subrange |
---|
[d1625f8] | 2273 | { $$ = new ExpressionNode( build_range( $1, $3 ) ); } |
---|
[4d51835] | 2274 | ; |
---|
[b87a5ed] | 2275 | |
---|
| 2276 | asm_name_opt: // GCC |
---|
[4d51835] | 2277 | // empty |
---|
[58dd019] | 2278 | { $$ = nullptr; } |
---|
| 2279 | | ASM '(' string_literal ')' attribute_list_opt |
---|
[c0aa336] | 2280 | { |
---|
| 2281 | DeclarationNode * name = new DeclarationNode(); |
---|
| 2282 | name->asmName = $3; |
---|
| 2283 | $$ = name->addQualifiers( $5 ); |
---|
| 2284 | } |
---|
[4d51835] | 2285 | ; |
---|
[b87a5ed] | 2286 | |
---|
| 2287 | attribute_list_opt: // GCC |
---|
[4d51835] | 2288 | // empty |
---|
[58dd019] | 2289 | { $$ = nullptr; } |
---|
[4d51835] | 2290 | | attribute_list |
---|
| 2291 | ; |
---|
[b87a5ed] | 2292 | |
---|
| 2293 | attribute_list: // GCC |
---|
[4d51835] | 2294 | attribute |
---|
| 2295 | | attribute_list attribute |
---|
[1db21619] | 2296 | { $$ = $2->addQualifiers( $1 ); } |
---|
[4d51835] | 2297 | ; |
---|
[b87a5ed] | 2298 | |
---|
| 2299 | attribute: // GCC |
---|
[44a81853] | 2300 | ATTRIBUTE '(' '(' attribute_name_list ')' ')' |
---|
| 2301 | { $$ = $4; } |
---|
[4d51835] | 2302 | ; |
---|
[b87a5ed] | 2303 | |
---|
[44a81853] | 2304 | attribute_name_list: // GCC |
---|
| 2305 | attribute_name |
---|
| 2306 | | attribute_name_list ',' attribute_name |
---|
[c0aa336] | 2307 | { $$ = $3->addQualifiers( $1 ); } |
---|
[4d51835] | 2308 | ; |
---|
[b87a5ed] | 2309 | |
---|
[44a81853] | 2310 | attribute_name: // GCC |
---|
[4d51835] | 2311 | // empty |
---|
[44a81853] | 2312 | { $$ = nullptr; } |
---|
| 2313 | | attr_name |
---|
| 2314 | { $$ = DeclarationNode::newAttribute( $1 ); } |
---|
| 2315 | | attr_name '(' argument_expression_list ')' |
---|
| 2316 | { $$ = DeclarationNode::newAttribute( $1, $3 ); } |
---|
[4d51835] | 2317 | ; |
---|
[b87a5ed] | 2318 | |
---|
[44a81853] | 2319 | attr_name: // GCC |
---|
| 2320 | IDENTIFIER |
---|
| 2321 | | TYPEDEFname |
---|
| 2322 | | TYPEGENname |
---|
| 2323 | | CONST |
---|
| 2324 | { $$ = Token{ new string( "__const__" ) }; } |
---|
[4d51835] | 2325 | ; |
---|
[51b7345] | 2326 | |
---|
[c11e31c] | 2327 | // ============================================================================ |
---|
[de62360d] | 2328 | // The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary |
---|
| 2329 | // because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as |
---|
| 2330 | // in: |
---|
[c11e31c] | 2331 | // |
---|
[b87a5ed] | 2332 | // int (*f())[10] { ... }; |
---|
| 2333 | // ... (*f())[3] += 1; // definition mimics usage |
---|
[c11e31c] | 2334 | // |
---|
[de62360d] | 2335 | // Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of |
---|
| 2336 | // the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context. |
---|
[c11e31c] | 2337 | // ============================================================================ |
---|
| 2338 | |
---|
| 2339 | // ---------------------------------------------------------------------------- |
---|
[de62360d] | 2340 | // The set of valid declarators before a compound statement for defining a function is less than the set of declarators |
---|
| 2341 | // to define a variable or function prototype, e.g.: |
---|
[c11e31c] | 2342 | // |
---|
[b87a5ed] | 2343 | // valid declaration invalid definition |
---|
| 2344 | // ----------------- ------------------ |
---|
[4d51835] | 2345 | // int f; int f {} |
---|
| 2346 | // int *f; int *f {} |
---|
[b87a5ed] | 2347 | // int f[10]; int f[10] {} |
---|
[4d51835] | 2348 | // int (*f)(int); int (*f)(int) {} |
---|
[c11e31c] | 2349 | // |
---|
[de62360d] | 2350 | // To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence |
---|
| 2351 | // variable_declarator and function_declarator. |
---|
[c11e31c] | 2352 | // ---------------------------------------------------------------------------- |
---|
| 2353 | |
---|
[de62360d] | 2354 | // This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes |
---|
| 2355 | // declaring an array of functions versus a pointer to an array of functions. |
---|
[51b7345] | 2356 | |
---|
| 2357 | variable_declarator: |
---|
[4d51835] | 2358 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2359 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2360 | | variable_ptr |
---|
| 2361 | | variable_array attribute_list_opt |
---|
[1db21619] | 2362 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2363 | | variable_function attribute_list_opt |
---|
[1db21619] | 2364 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2365 | ; |
---|
[51b7345] | 2366 | |
---|
| 2367 | paren_identifier: |
---|
[4d51835] | 2368 | identifier |
---|
| 2369 | { |
---|
[de62360d] | 2370 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2371 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2372 | } |
---|
| 2373 | | '(' paren_identifier ')' // redundant parenthesis |
---|
| 2374 | { $$ = $2; } |
---|
| 2375 | ; |
---|
[51b7345] | 2376 | |
---|
| 2377 | variable_ptr: |
---|
[dd51906] | 2378 | ptrref_operator variable_declarator |
---|
[4d51835] | 2379 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2380 | | ptrref_operator type_qualifier_list variable_declarator |
---|
[4d51835] | 2381 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2382 | | '(' variable_ptr ')' attribute_list_opt |
---|
| 2383 | { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis |
---|
[4d51835] | 2384 | ; |
---|
[51b7345] | 2385 | |
---|
| 2386 | variable_array: |
---|
[4d51835] | 2387 | paren_identifier array_dimension |
---|
| 2388 | { $$ = $1->addArray( $2 ); } |
---|
| 2389 | | '(' variable_ptr ')' array_dimension |
---|
| 2390 | { $$ = $2->addArray( $4 ); } |
---|
| 2391 | | '(' variable_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2392 | { $$ = $2->addArray( $4 ); } |
---|
| 2393 | | '(' variable_array ')' // redundant parenthesis |
---|
| 2394 | { $$ = $2; } |
---|
| 2395 | ; |
---|
[51b7345] | 2396 | |
---|
| 2397 | variable_function: |
---|
[4d51835] | 2398 | '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2399 | { $$ = $2->addParamList( $6 ); } |
---|
| 2400 | | '(' variable_function ')' // redundant parenthesis |
---|
| 2401 | { $$ = $2; } |
---|
| 2402 | ; |
---|
[51b7345] | 2403 | |
---|
[c6b1105] | 2404 | // This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is |
---|
| 2405 | // no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist |
---|
| 2406 | // is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2407 | |
---|
| 2408 | function_declarator: |
---|
[4d51835] | 2409 | function_no_ptr attribute_list_opt |
---|
[1db21619] | 2410 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2411 | | function_ptr |
---|
| 2412 | | function_array attribute_list_opt |
---|
[1db21619] | 2413 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2414 | ; |
---|
[51b7345] | 2415 | |
---|
| 2416 | function_no_ptr: |
---|
[4d51835] | 2417 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2418 | { $$ = $1->addParamList( $4 ); } |
---|
| 2419 | | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2420 | { $$ = $2->addParamList( $6 ); } |
---|
| 2421 | | '(' function_no_ptr ')' // redundant parenthesis |
---|
| 2422 | { $$ = $2; } |
---|
| 2423 | ; |
---|
[51b7345] | 2424 | |
---|
| 2425 | function_ptr: |
---|
[dd51906] | 2426 | ptrref_operator function_declarator |
---|
[4d51835] | 2427 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2428 | | ptrref_operator type_qualifier_list function_declarator |
---|
[4d51835] | 2429 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
| 2430 | | '(' function_ptr ')' |
---|
| 2431 | { $$ = $2; } |
---|
| 2432 | ; |
---|
[51b7345] | 2433 | |
---|
| 2434 | function_array: |
---|
[4d51835] | 2435 | '(' function_ptr ')' array_dimension |
---|
| 2436 | { $$ = $2->addArray( $4 ); } |
---|
| 2437 | | '(' function_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2438 | { $$ = $2->addArray( $4 ); } |
---|
| 2439 | | '(' function_array ')' // redundant parenthesis |
---|
| 2440 | { $$ = $2; } |
---|
| 2441 | ; |
---|
[51b7345] | 2442 | |
---|
[c0aa336] | 2443 | // This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) |
---|
| 2444 | // |
---|
| 2445 | // f( a, b, c ) int a, *b, c[]; {} |
---|
| 2446 | // |
---|
| 2447 | // that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes |
---|
| 2448 | // returning arrays and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2449 | |
---|
[c0aa336] | 2450 | KR_function_declarator: |
---|
| 2451 | KR_function_no_ptr |
---|
| 2452 | | KR_function_ptr |
---|
| 2453 | | KR_function_array |
---|
[4d51835] | 2454 | ; |
---|
[51b7345] | 2455 | |
---|
[c0aa336] | 2456 | KR_function_no_ptr: |
---|
[4d51835] | 2457 | paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter |
---|
| 2458 | { $$ = $1->addIdList( $3 ); } |
---|
[c0aa336] | 2459 | | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')' |
---|
| 2460 | { $$ = $2->addParamList( $6 ); } |
---|
| 2461 | | '(' KR_function_no_ptr ')' // redundant parenthesis |
---|
[4d51835] | 2462 | { $$ = $2; } |
---|
| 2463 | ; |
---|
[51b7345] | 2464 | |
---|
[c0aa336] | 2465 | KR_function_ptr: |
---|
| 2466 | ptrref_operator KR_function_declarator |
---|
[4d51835] | 2467 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c0aa336] | 2468 | | ptrref_operator type_qualifier_list KR_function_declarator |
---|
[4d51835] | 2469 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2470 | | '(' KR_function_ptr ')' |
---|
[4d51835] | 2471 | { $$ = $2; } |
---|
| 2472 | ; |
---|
[51b7345] | 2473 | |
---|
[c0aa336] | 2474 | KR_function_array: |
---|
| 2475 | '(' KR_function_ptr ')' array_dimension |
---|
[4d51835] | 2476 | { $$ = $2->addArray( $4 ); } |
---|
[c0aa336] | 2477 | | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis |
---|
[4d51835] | 2478 | { $$ = $2->addArray( $4 ); } |
---|
[c0aa336] | 2479 | | '(' KR_function_array ')' // redundant parenthesis |
---|
[4d51835] | 2480 | { $$ = $2; } |
---|
| 2481 | ; |
---|
[51b7345] | 2482 | |
---|
[2871210] | 2483 | // This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.: |
---|
[c11e31c] | 2484 | // |
---|
[b87a5ed] | 2485 | // typedef int foo; |
---|
| 2486 | // { |
---|
| 2487 | // int foo; // redefine typedef name in new scope |
---|
| 2488 | // } |
---|
[c11e31c] | 2489 | // |
---|
[de62360d] | 2490 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2491 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2492 | |
---|
[c6b1105] | 2493 | variable_type_redeclarator: |
---|
[2871210] | 2494 | paren_type attribute_list_opt |
---|
[1db21619] | 2495 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2496 | | type_ptr |
---|
| 2497 | | type_array attribute_list_opt |
---|
[1db21619] | 2498 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2499 | | type_function attribute_list_opt |
---|
[1db21619] | 2500 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2501 | ; |
---|
[51b7345] | 2502 | |
---|
[2871210] | 2503 | paren_type: |
---|
| 2504 | typedef |
---|
| 2505 | | '(' paren_type ')' |
---|
[4d51835] | 2506 | { $$ = $2; } |
---|
| 2507 | ; |
---|
[51b7345] | 2508 | |
---|
[2871210] | 2509 | type_ptr: |
---|
[c6b1105] | 2510 | ptrref_operator variable_type_redeclarator |
---|
[4d51835] | 2511 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c6b1105] | 2512 | | ptrref_operator type_qualifier_list variable_type_redeclarator |
---|
[4d51835] | 2513 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2514 | | '(' type_ptr ')' attribute_list_opt |
---|
| 2515 | { $$ = $2->addQualifiers( $4 ); } |
---|
[4d51835] | 2516 | ; |
---|
[51b7345] | 2517 | |
---|
[2871210] | 2518 | type_array: |
---|
| 2519 | paren_type array_dimension |
---|
[4d51835] | 2520 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2521 | | '(' type_ptr ')' array_dimension |
---|
[4d51835] | 2522 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2523 | | '(' type_array ')' multi_array_dimension // redundant parenthesis |
---|
[4d51835] | 2524 | { $$ = $2->addArray( $4 ); } |
---|
[2871210] | 2525 | | '(' type_array ')' // redundant parenthesis |
---|
[4d51835] | 2526 | { $$ = $2; } |
---|
| 2527 | ; |
---|
[51b7345] | 2528 | |
---|
[2871210] | 2529 | type_function: |
---|
| 2530 | paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2531 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2532 | | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2533 | { $$ = $2->addParamList( $6 ); } |
---|
[2871210] | 2534 | | '(' type_function ')' // redundant parenthesis |
---|
[4d51835] | 2535 | { $$ = $2; } |
---|
| 2536 | ; |
---|
[51b7345] | 2537 | |
---|
[c0aa336] | 2538 | // This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a |
---|
| 2539 | // typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes |
---|
| 2540 | // declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus |
---|
| 2541 | // pointers to arrays and functions. |
---|
[51b7345] | 2542 | |
---|
| 2543 | identifier_parameter_declarator: |
---|
[4d51835] | 2544 | paren_identifier attribute_list_opt |
---|
[1db21619] | 2545 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2546 | | identifier_parameter_ptr |
---|
| 2547 | | identifier_parameter_array attribute_list_opt |
---|
[1db21619] | 2548 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2549 | | identifier_parameter_function attribute_list_opt |
---|
[1db21619] | 2550 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2551 | ; |
---|
[51b7345] | 2552 | |
---|
| 2553 | identifier_parameter_ptr: |
---|
[dd51906] | 2554 | ptrref_operator identifier_parameter_declarator |
---|
[4d51835] | 2555 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2556 | | ptrref_operator type_qualifier_list identifier_parameter_declarator |
---|
[4d51835] | 2557 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2558 | | '(' identifier_parameter_ptr ')' attribute_list_opt |
---|
| 2559 | { $$ = $2->addQualifiers( $4 ); } |
---|
[4d51835] | 2560 | ; |
---|
[51b7345] | 2561 | |
---|
| 2562 | identifier_parameter_array: |
---|
[4d51835] | 2563 | paren_identifier array_parameter_dimension |
---|
| 2564 | { $$ = $1->addArray( $2 ); } |
---|
| 2565 | | '(' identifier_parameter_ptr ')' array_dimension |
---|
| 2566 | { $$ = $2->addArray( $4 ); } |
---|
| 2567 | | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2568 | { $$ = $2->addArray( $4 ); } |
---|
| 2569 | | '(' identifier_parameter_array ')' // redundant parenthesis |
---|
| 2570 | { $$ = $2; } |
---|
| 2571 | ; |
---|
[51b7345] | 2572 | |
---|
| 2573 | identifier_parameter_function: |
---|
[4d51835] | 2574 | paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2575 | { $$ = $1->addParamList( $4 ); } |
---|
| 2576 | | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2577 | { $$ = $2->addParamList( $6 ); } |
---|
| 2578 | | '(' identifier_parameter_function ')' // redundant parenthesis |
---|
| 2579 | { $$ = $2; } |
---|
| 2580 | ; |
---|
[b87a5ed] | 2581 | |
---|
[de62360d] | 2582 | // This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name, |
---|
| 2583 | // e.g.: |
---|
[c11e31c] | 2584 | // |
---|
[b87a5ed] | 2585 | // typedef int foo; |
---|
| 2586 | // int f( int foo ); // redefine typedef name in new scope |
---|
[c11e31c] | 2587 | // |
---|
[c0aa336] | 2588 | // and allows the C99 array options, which can only appear in a parameter list. |
---|
[51b7345] | 2589 | |
---|
[2871210] | 2590 | type_parameter_redeclarator: |
---|
[4d51835] | 2591 | typedef attribute_list_opt |
---|
[1db21619] | 2592 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2593 | | type_parameter_ptr |
---|
| 2594 | | type_parameter_array attribute_list_opt |
---|
[1db21619] | 2595 | { $$ = $1->addQualifiers( $2 ); } |
---|
[2871210] | 2596 | | type_parameter_function attribute_list_opt |
---|
[1db21619] | 2597 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2598 | ; |
---|
[51b7345] | 2599 | |
---|
| 2600 | typedef: |
---|
[4d51835] | 2601 | TYPEDEFname |
---|
| 2602 | { |
---|
[de62360d] | 2603 | typedefTable.setNextIdentifier( *$1 ); |
---|
[4d51835] | 2604 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2605 | } |
---|
[2871210] | 2606 | | TYPEGENname |
---|
| 2607 | { |
---|
| 2608 | typedefTable.setNextIdentifier( *$1 ); |
---|
| 2609 | $$ = DeclarationNode::newName( $1 ); |
---|
| 2610 | } |
---|
[4d51835] | 2611 | ; |
---|
[51b7345] | 2612 | |
---|
[2871210] | 2613 | type_parameter_ptr: |
---|
[dd51906] | 2614 | ptrref_operator type_parameter_redeclarator |
---|
[4d51835] | 2615 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2616 | | ptrref_operator type_qualifier_list type_parameter_redeclarator |
---|
[4d51835] | 2617 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2618 | | '(' type_parameter_ptr ')' attribute_list_opt |
---|
| 2619 | { $$ = $2->addQualifiers( $4 ); } |
---|
[4d51835] | 2620 | ; |
---|
[51b7345] | 2621 | |
---|
[2871210] | 2622 | type_parameter_array: |
---|
[4d51835] | 2623 | typedef array_parameter_dimension |
---|
| 2624 | { $$ = $1->addArray( $2 ); } |
---|
[2871210] | 2625 | | '(' type_parameter_ptr ')' array_parameter_dimension |
---|
[4d51835] | 2626 | { $$ = $2->addArray( $4 ); } |
---|
| 2627 | ; |
---|
[51b7345] | 2628 | |
---|
[2871210] | 2629 | type_parameter_function: |
---|
[4d51835] | 2630 | typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2631 | { $$ = $1->addParamList( $4 ); } |
---|
[2871210] | 2632 | | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[4d51835] | 2633 | { $$ = $2->addParamList( $6 ); } |
---|
| 2634 | ; |
---|
[b87a5ed] | 2635 | |
---|
[de62360d] | 2636 | // This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to |
---|
| 2637 | // which the type applies, e.g.: |
---|
[c11e31c] | 2638 | // |
---|
[b87a5ed] | 2639 | // sizeof( int ); |
---|
[c0aa336] | 2640 | // sizeof( int * ); |
---|
[b87a5ed] | 2641 | // sizeof( int [10] ); |
---|
[c0aa336] | 2642 | // sizeof( int (*)() ); |
---|
| 2643 | // sizeof( int () ); |
---|
[c11e31c] | 2644 | // |
---|
[de62360d] | 2645 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
| 2646 | // and functions versus pointers to arrays and functions. |
---|
[51b7345] | 2647 | |
---|
| 2648 | abstract_declarator: |
---|
[4d51835] | 2649 | abstract_ptr |
---|
| 2650 | | abstract_array attribute_list_opt |
---|
[1db21619] | 2651 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2652 | | abstract_function attribute_list_opt |
---|
[1db21619] | 2653 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2654 | ; |
---|
[51b7345] | 2655 | |
---|
| 2656 | abstract_ptr: |
---|
[dd51906] | 2657 | ptrref_operator |
---|
[4d51835] | 2658 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2659 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2660 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2661 | | ptrref_operator abstract_declarator |
---|
[4d51835] | 2662 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2663 | | ptrref_operator type_qualifier_list abstract_declarator |
---|
[4d51835] | 2664 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2665 | | '(' abstract_ptr ')' attribute_list_opt |
---|
| 2666 | { $$ = $2->addQualifiers( $4 ); } |
---|
[4d51835] | 2667 | ; |
---|
[51b7345] | 2668 | |
---|
| 2669 | abstract_array: |
---|
[4d51835] | 2670 | array_dimension |
---|
| 2671 | | '(' abstract_ptr ')' array_dimension |
---|
| 2672 | { $$ = $2->addArray( $4 ); } |
---|
| 2673 | | '(' abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2674 | { $$ = $2->addArray( $4 ); } |
---|
| 2675 | | '(' abstract_array ')' // redundant parenthesis |
---|
| 2676 | { $$ = $2; } |
---|
| 2677 | ; |
---|
[51b7345] | 2678 | |
---|
| 2679 | abstract_function: |
---|
[4d51835] | 2680 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[2298f728] | 2681 | { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); } |
---|
[4d51835] | 2682 | | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2683 | { $$ = $2->addParamList( $6 ); } |
---|
| 2684 | | '(' abstract_function ')' // redundant parenthesis |
---|
| 2685 | { $$ = $2; } |
---|
| 2686 | ; |
---|
[51b7345] | 2687 | |
---|
| 2688 | array_dimension: |
---|
[4d51835] | 2689 | // Only the first dimension can be empty. |
---|
[2871210] | 2690 | '[' ']' |
---|
[4d51835] | 2691 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
[2871210] | 2692 | | '[' ']' multi_array_dimension |
---|
| 2693 | { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); } |
---|
[4d51835] | 2694 | | multi_array_dimension |
---|
| 2695 | ; |
---|
[51b7345] | 2696 | |
---|
| 2697 | multi_array_dimension: |
---|
[4d51835] | 2698 | '[' push assignment_expression pop ']' |
---|
| 2699 | { $$ = DeclarationNode::newArray( $3, 0, false ); } |
---|
| 2700 | | '[' push '*' pop ']' // C99 |
---|
| 2701 | { $$ = DeclarationNode::newVarArray( 0 ); } |
---|
| 2702 | | multi_array_dimension '[' push assignment_expression pop ']' |
---|
| 2703 | { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); } |
---|
| 2704 | | multi_array_dimension '[' push '*' pop ']' // C99 |
---|
| 2705 | { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); } |
---|
| 2706 | ; |
---|
[51b7345] | 2707 | |
---|
[c11e31c] | 2708 | // This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no |
---|
| 2709 | // identifier to which the type applies, e.g.: |
---|
| 2710 | // |
---|
[c0aa336] | 2711 | // int f( int ); // not handled here |
---|
| 2712 | // int f( int * ); // abstract function-prototype parameter; no parameter name specified |
---|
| 2713 | // int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified |
---|
[b87a5ed] | 2714 | // int f( int (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2715 | // |
---|
[de62360d] | 2716 | // The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays |
---|
[c0aa336] | 2717 | // and functions versus pointers to arrays and functions. In addition, the pattern handles the |
---|
| 2718 | // special meaning of parenthesis around a typedef name: |
---|
| 2719 | // |
---|
| 2720 | // ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in |
---|
| 2721 | // parentheses is taken to be an abstract declarator that specifies a function with a single parameter, |
---|
| 2722 | // not as redundant parentheses around the identifier." |
---|
| 2723 | // |
---|
| 2724 | // For example: |
---|
| 2725 | // |
---|
| 2726 | // typedef float T; |
---|
| 2727 | // int f( int ( T [5] ) ); // see abstract_parameter_declarator |
---|
| 2728 | // int g( int ( T ( int ) ) ); // see abstract_parameter_declarator |
---|
| 2729 | // int f( int f1( T a[5] ) ); // see identifier_parameter_declarator |
---|
| 2730 | // int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator |
---|
| 2731 | // |
---|
| 2732 | // In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and |
---|
| 2733 | // not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of |
---|
| 2734 | // functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and |
---|
| 2735 | // functions. |
---|
[51b7345] | 2736 | |
---|
| 2737 | abstract_parameter_declarator: |
---|
[4d51835] | 2738 | abstract_parameter_ptr |
---|
| 2739 | | abstract_parameter_array attribute_list_opt |
---|
[1db21619] | 2740 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2741 | | abstract_parameter_function attribute_list_opt |
---|
[1db21619] | 2742 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2743 | ; |
---|
[51b7345] | 2744 | |
---|
| 2745 | abstract_parameter_ptr: |
---|
[dd51906] | 2746 | ptrref_operator |
---|
[c0aa336] | 2747 | { $$ = DeclarationNode::newPointer( nullptr ); } |
---|
[dd51906] | 2748 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2749 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2750 | | ptrref_operator abstract_parameter_declarator |
---|
[c0aa336] | 2751 | { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr ) ); } |
---|
[dd51906] | 2752 | | ptrref_operator type_qualifier_list abstract_parameter_declarator |
---|
[4d51835] | 2753 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2754 | | '(' abstract_parameter_ptr ')' attribute_list_opt |
---|
| 2755 | { $$ = $2->addQualifiers( $4 ); } |
---|
[4d51835] | 2756 | ; |
---|
[51b7345] | 2757 | |
---|
| 2758 | abstract_parameter_array: |
---|
[4d51835] | 2759 | array_parameter_dimension |
---|
| 2760 | | '(' abstract_parameter_ptr ')' array_parameter_dimension |
---|
| 2761 | { $$ = $2->addArray( $4 ); } |
---|
| 2762 | | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2763 | { $$ = $2->addArray( $4 ); } |
---|
| 2764 | | '(' abstract_parameter_array ')' // redundant parenthesis |
---|
| 2765 | { $$ = $2; } |
---|
| 2766 | ; |
---|
[51b7345] | 2767 | |
---|
| 2768 | abstract_parameter_function: |
---|
[4d51835] | 2769 | '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
[2298f728] | 2770 | { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); } |
---|
[4d51835] | 2771 | | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2772 | { $$ = $2->addParamList( $6 ); } |
---|
| 2773 | | '(' abstract_parameter_function ')' // redundant parenthesis |
---|
| 2774 | { $$ = $2; } |
---|
| 2775 | ; |
---|
[51b7345] | 2776 | |
---|
| 2777 | array_parameter_dimension: |
---|
[4d51835] | 2778 | // Only the first dimension can be empty or have qualifiers. |
---|
| 2779 | array_parameter_1st_dimension |
---|
| 2780 | | array_parameter_1st_dimension multi_array_dimension |
---|
| 2781 | { $$ = $1->addArray( $2 ); } |
---|
| 2782 | | multi_array_dimension |
---|
| 2783 | ; |
---|
[51b7345] | 2784 | |
---|
[c11e31c] | 2785 | // The declaration of an array parameter has additional syntax over arrays in normal variable declarations: |
---|
| 2786 | // |
---|
[de62360d] | 2787 | // ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in |
---|
| 2788 | // a declaration of a function parameter with an array type, and then only in the outermost array type derivation." |
---|
[51b7345] | 2789 | |
---|
| 2790 | array_parameter_1st_dimension: |
---|
[2871210] | 2791 | '[' ']' |
---|
[4d51835] | 2792 | { $$ = DeclarationNode::newArray( 0, 0, false ); } |
---|
| 2793 | // multi_array_dimension handles the '[' '*' ']' case |
---|
| 2794 | | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2795 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2796 | | '[' push type_qualifier_list pop ']' |
---|
| 2797 | { $$ = DeclarationNode::newArray( 0, $3, false ); } |
---|
| 2798 | // multi_array_dimension handles the '[' assignment_expression ']' case |
---|
| 2799 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2800 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2801 | | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']' |
---|
| 2802 | { $$ = DeclarationNode::newArray( $5, $4, true ); } |
---|
| 2803 | | '[' push type_qualifier_list STATIC assignment_expression pop ']' |
---|
| 2804 | { $$ = DeclarationNode::newArray( $5, $3, true ); } |
---|
| 2805 | ; |
---|
[b87a5ed] | 2806 | |
---|
[c0aa336] | 2807 | // This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer. |
---|
[c11e31c] | 2808 | // |
---|
[c0aa336] | 2809 | // struct S { |
---|
| 2810 | // int; |
---|
| 2811 | // int *; |
---|
| 2812 | // int [10]; |
---|
| 2813 | // int (*)(); |
---|
| 2814 | // }; |
---|
[51b7345] | 2815 | |
---|
| 2816 | variable_abstract_declarator: |
---|
[4d51835] | 2817 | variable_abstract_ptr |
---|
| 2818 | | variable_abstract_array attribute_list_opt |
---|
[1db21619] | 2819 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2820 | | variable_abstract_function attribute_list_opt |
---|
[1db21619] | 2821 | { $$ = $1->addQualifiers( $2 ); } |
---|
[4d51835] | 2822 | ; |
---|
[51b7345] | 2823 | |
---|
| 2824 | variable_abstract_ptr: |
---|
[dd51906] | 2825 | ptrref_operator |
---|
[4d51835] | 2826 | { $$ = DeclarationNode::newPointer( 0 ); } |
---|
[dd51906] | 2827 | | ptrref_operator type_qualifier_list |
---|
[4d51835] | 2828 | { $$ = DeclarationNode::newPointer( $2 ); } |
---|
[dd51906] | 2829 | | ptrref_operator variable_abstract_declarator |
---|
[4d51835] | 2830 | { $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2831 | | ptrref_operator type_qualifier_list variable_abstract_declarator |
---|
[4d51835] | 2832 | { $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); } |
---|
[c0aa336] | 2833 | | '(' variable_abstract_ptr ')' attribute_list_opt |
---|
| 2834 | { $$ = $2->addQualifiers( $4 ); } |
---|
[4d51835] | 2835 | ; |
---|
[51b7345] | 2836 | |
---|
| 2837 | variable_abstract_array: |
---|
[4d51835] | 2838 | array_dimension |
---|
| 2839 | | '(' variable_abstract_ptr ')' array_dimension |
---|
| 2840 | { $$ = $2->addArray( $4 ); } |
---|
| 2841 | | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis |
---|
| 2842 | { $$ = $2->addArray( $4 ); } |
---|
| 2843 | | '(' variable_abstract_array ')' // redundant parenthesis |
---|
| 2844 | { $$ = $2; } |
---|
| 2845 | ; |
---|
[51b7345] | 2846 | |
---|
| 2847 | variable_abstract_function: |
---|
[4d51835] | 2848 | '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3) |
---|
| 2849 | { $$ = $2->addParamList( $6 ); } |
---|
| 2850 | | '(' variable_abstract_function ')' // redundant parenthesis |
---|
| 2851 | { $$ = $2; } |
---|
| 2852 | ; |
---|
[b87a5ed] | 2853 | |
---|
[de62360d] | 2854 | // This pattern parses a new-style declaration for a parameter variable or function prototype that is either an |
---|
| 2855 | // identifier or typedef name and allows the C99 array options, which can only appear in a parameter list. |
---|
[b87a5ed] | 2856 | |
---|
[c0aa336] | 2857 | cfa_identifier_parameter_declarator_tuple: // CFA |
---|
| 2858 | cfa_identifier_parameter_declarator_no_tuple |
---|
| 2859 | | cfa_abstract_tuple |
---|
| 2860 | | type_qualifier_list cfa_abstract_tuple |
---|
[4d51835] | 2861 | { $$ = $2->addQualifiers( $1 ); } |
---|
| 2862 | ; |
---|
[b87a5ed] | 2863 | |
---|
[c0aa336] | 2864 | cfa_identifier_parameter_declarator_no_tuple: // CFA |
---|
| 2865 | cfa_identifier_parameter_ptr |
---|
| 2866 | | cfa_identifier_parameter_array |
---|
[4d51835] | 2867 | ; |
---|
[b87a5ed] | 2868 | |
---|
[c0aa336] | 2869 | cfa_identifier_parameter_ptr: // CFA |
---|
[d0ffed1] | 2870 | // No SUE declaration in parameter list. |
---|
| 2871 | ptrref_operator type_specifier_nobody |
---|
[4d51835] | 2872 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[d0ffed1] | 2873 | | type_qualifier_list ptrref_operator type_specifier_nobody |
---|
[4d51835] | 2874 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[c0aa336] | 2875 | | ptrref_operator cfa_abstract_function |
---|
[4d51835] | 2876 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c0aa336] | 2877 | | type_qualifier_list ptrref_operator cfa_abstract_function |
---|
[4d51835] | 2878 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[c0aa336] | 2879 | | ptrref_operator cfa_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2880 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c0aa336] | 2881 | | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple |
---|
[4d51835] | 2882 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2883 | ; |
---|
[b87a5ed] | 2884 | |
---|
[c0aa336] | 2885 | cfa_identifier_parameter_array: // CFA |
---|
[de62360d] | 2886 | // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to |
---|
| 2887 | // shift/reduce conflict with new-style empty (void) function return type. |
---|
[d0ffed1] | 2888 | '[' ']' type_specifier_nobody |
---|
[2871210] | 2889 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[d0ffed1] | 2890 | | cfa_array_parameter_1st_dimension type_specifier_nobody |
---|
[4d51835] | 2891 | { $$ = $2->addNewArray( $1 ); } |
---|
[d0ffed1] | 2892 | | '[' ']' multi_array_dimension type_specifier_nobody |
---|
[2871210] | 2893 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[d0ffed1] | 2894 | | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody |
---|
[4d51835] | 2895 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
[d0ffed1] | 2896 | | multi_array_dimension type_specifier_nobody |
---|
[4d51835] | 2897 | { $$ = $2->addNewArray( $1 ); } |
---|
[9059213] | 2898 | |
---|
[c0aa336] | 2899 | | '[' ']' cfa_identifier_parameter_ptr |
---|
[2871210] | 2900 | { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[c0aa336] | 2901 | | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr |
---|
[4d51835] | 2902 | { $$ = $2->addNewArray( $1 ); } |
---|
[c0aa336] | 2903 | | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr |
---|
[2871210] | 2904 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); } |
---|
[c0aa336] | 2905 | | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr |
---|
[4d51835] | 2906 | { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); } |
---|
[c0aa336] | 2907 | | multi_array_dimension cfa_identifier_parameter_ptr |
---|
[4d51835] | 2908 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2909 | ; |
---|
[51b7345] | 2910 | |
---|
[c0aa336] | 2911 | cfa_array_parameter_1st_dimension: |
---|
[4d51835] | 2912 | '[' push type_qualifier_list '*' pop ']' // remaining C99 |
---|
| 2913 | { $$ = DeclarationNode::newVarArray( $3 ); } |
---|
| 2914 | | '[' push type_qualifier_list assignment_expression pop ']' |
---|
| 2915 | { $$ = DeclarationNode::newArray( $4, $3, false ); } |
---|
| 2916 | | '[' push declaration_qualifier_list assignment_expression pop ']' |
---|
| 2917 | // declaration_qualifier_list must be used because of shift/reduce conflict with |
---|
| 2918 | // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot |
---|
| 2919 | // appear in this context. |
---|
| 2920 | { $$ = DeclarationNode::newArray( $4, $3, true ); } |
---|
| 2921 | | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']' |
---|
| 2922 | { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); } |
---|
| 2923 | ; |
---|
[b87a5ed] | 2924 | |
---|
[de62360d] | 2925 | // This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no |
---|
| 2926 | // identifier to which the type applies, e.g.: |
---|
[c11e31c] | 2927 | // |
---|
[b87a5ed] | 2928 | // [int] f( int ); // abstract variable parameter; no parameter name specified |
---|
| 2929 | // [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified |
---|
[c11e31c] | 2930 | // |
---|
| 2931 | // These rules need LR(3): |
---|
| 2932 | // |
---|
[c0aa336] | 2933 | // cfa_abstract_tuple identifier_or_type_name |
---|
| 2934 | // '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_type_list_opt ')' |
---|
[c11e31c] | 2935 | // |
---|
| 2936 | // since a function return type can be syntactically identical to a tuple type: |
---|
| 2937 | // |
---|
[b87a5ed] | 2938 | // [int, int] t; |
---|
| 2939 | // [int, int] f( int ); |
---|
[c11e31c] | 2940 | // |
---|
[2871210] | 2941 | // Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce |
---|
[c0aa336] | 2942 | // cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary |
---|
| 2943 | // lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are |
---|
| 2944 | // duplicated when appearing with cfa_function_specifier. |
---|
[b87a5ed] | 2945 | |
---|
[c0aa336] | 2946 | cfa_abstract_declarator_tuple: // CFA |
---|
| 2947 | cfa_abstract_tuple |
---|
| 2948 | | type_qualifier_list cfa_abstract_tuple |
---|
[4d51835] | 2949 | { $$ = $2->addQualifiers( $1 ); } |
---|
[c0aa336] | 2950 | | cfa_abstract_declarator_no_tuple |
---|
[4d51835] | 2951 | ; |
---|
[b87a5ed] | 2952 | |
---|
[c0aa336] | 2953 | cfa_abstract_declarator_no_tuple: // CFA |
---|
| 2954 | cfa_abstract_ptr |
---|
| 2955 | | cfa_abstract_array |
---|
[4d51835] | 2956 | ; |
---|
[b87a5ed] | 2957 | |
---|
[c0aa336] | 2958 | cfa_abstract_ptr: // CFA |
---|
[dd51906] | 2959 | ptrref_operator type_specifier |
---|
[4d51835] | 2960 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[dd51906] | 2961 | | type_qualifier_list ptrref_operator type_specifier |
---|
[4d51835] | 2962 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[c0aa336] | 2963 | | ptrref_operator cfa_abstract_function |
---|
[4d51835] | 2964 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c0aa336] | 2965 | | type_qualifier_list ptrref_operator cfa_abstract_function |
---|
[4d51835] | 2966 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
[c0aa336] | 2967 | | ptrref_operator cfa_abstract_declarator_tuple |
---|
[4d51835] | 2968 | { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); } |
---|
[c0aa336] | 2969 | | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple |
---|
[4d51835] | 2970 | { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); } |
---|
| 2971 | ; |
---|
[b87a5ed] | 2972 | |
---|
[c0aa336] | 2973 | cfa_abstract_array: // CFA |
---|
[de62360d] | 2974 | // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with |
---|
| 2975 | // empty (void) function return type. |
---|
[2871210] | 2976 | '[' ']' type_specifier |
---|
[2298f728] | 2977 | { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[2871210] | 2978 | | '[' ']' multi_array_dimension type_specifier |
---|
[2298f728] | 2979 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[4d51835] | 2980 | | multi_array_dimension type_specifier |
---|
| 2981 | { $$ = $2->addNewArray( $1 ); } |
---|
[c0aa336] | 2982 | | '[' ']' cfa_abstract_ptr |
---|
[2298f728] | 2983 | { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[c0aa336] | 2984 | | '[' ']' multi_array_dimension cfa_abstract_ptr |
---|
[2298f728] | 2985 | { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); } |
---|
[c0aa336] | 2986 | | multi_array_dimension cfa_abstract_ptr |
---|
[4d51835] | 2987 | { $$ = $2->addNewArray( $1 ); } |
---|
| 2988 | ; |
---|
[b87a5ed] | 2989 | |
---|
[c0aa336] | 2990 | cfa_abstract_tuple: // CFA |
---|
| 2991 | '[' push cfa_abstract_parameter_list pop ']' |
---|
[4d51835] | 2992 | { $$ = DeclarationNode::newTuple( $3 ); } |
---|
| 2993 | ; |
---|
[b87a5ed] | 2994 | |
---|
[c0aa336] | 2995 | cfa_abstract_function: // CFA |
---|
| 2996 | // '[' ']' '(' cfa_parameter_type_list_opt ')' |
---|
[1b29996] | 2997 | // { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); } |
---|
[c0aa336] | 2998 | cfa_abstract_tuple '(' push cfa_parameter_type_list_opt pop ')' |
---|
[2298f728] | 2999 | { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); } |
---|
[c0aa336] | 3000 | | cfa_function_return '(' push cfa_parameter_type_list_opt pop ')' |
---|
[2298f728] | 3001 | { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); } |
---|
[4d51835] | 3002 | ; |
---|
[b87a5ed] | 3003 | |
---|
[de62360d] | 3004 | // 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in |
---|
| 3005 | // each declaration, and in the specifier-qualifier list in each structure declaration and type name." |
---|
[c11e31c] | 3006 | // |
---|
[de62360d] | 3007 | // 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of |
---|
| 3008 | // the declaration specifiers in a declaration is an obsolescent feature." |
---|
[c11e31c] | 3009 | // |
---|
| 3010 | // 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not |
---|
| 3011 | // prototype-format parameter type declarators) is an obsolescent feature." |
---|
| 3012 | // |
---|
[de62360d] | 3013 | // 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and |
---|
| 3014 | // declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature. |
---|
[51b7345] | 3015 | |
---|
[c11e31c] | 3016 | //************************* MISCELLANEOUS ******************************** |
---|
[51b7345] | 3017 | |
---|
[b87a5ed] | 3018 | comma_opt: // redundant comma |
---|
[4d51835] | 3019 | // empty |
---|
| 3020 | | ',' |
---|
| 3021 | ; |
---|
[51b7345] | 3022 | |
---|
| 3023 | assignment_opt: |
---|
[4d51835] | 3024 | // empty |
---|
[58dd019] | 3025 | { $$ = nullptr; } |
---|
[4d51835] | 3026 | | '=' assignment_expression |
---|
| 3027 | { $$ = $2; } |
---|
| 3028 | ; |
---|
[51b7345] | 3029 | |
---|
| 3030 | %% |
---|
[c11e31c] | 3031 | // ----end of grammar---- |
---|
[51b7345] | 3032 | |
---|
[0da3e2c] | 3033 | extern char *yytext; |
---|
| 3034 | |
---|
[5f2f2d7] | 3035 | void yyerror( const char * ) { |
---|
[2298f728] | 3036 | cout << "Error "; |
---|
[b87a5ed] | 3037 | if ( yyfilename ) { |
---|
[2298f728] | 3038 | cout << "in file " << yyfilename << " "; |
---|
[5f2f2d7] | 3039 | } // if |
---|
[2298f728] | 3040 | cout << "at line " << yylineno << " reading token \"" << (yytext[0] == '\0' ? "EOF" : yytext) << "\"" << endl; |
---|
[51b7345] | 3041 | } |
---|
| 3042 | |
---|
[c11e31c] | 3043 | // Local Variables: // |
---|
[b87a5ed] | 3044 | // mode: c++ // |
---|
[de62360d] | 3045 | // tab-width: 4 // |
---|
[c11e31c] | 3046 | // compile-command: "make install" // |
---|
| 3047 | // End: // |
---|