source: src/Parser/parser.yy@ c655650

ADT ast-experimental enum pthread-emulation qualifiedEnum
Last change on this file since c655650 was aac37fa, checked in by Peter A. Buhr <pabuhr@…>, 4 years ago

remove SemanticError for "else" extension, support extern "..." for single declaration

  • Property mode set to 100644
File size: 146.6 KB
RevLine 
[b87a5ed]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[9335ecc]7// parser.yy --
[974906e2]8//
[c11e31c]9// Author : Peter A. Buhr
10// Created On : Sat Sep 1 20:22:55 2001
[936e9f4]11// Last Modified By : Peter A. Buhr
[aac37fa]12// Last Modified On : Fri Feb 11 14:26:15 2022
13// Update Count : 5174
[974906e2]14//
[c11e31c]15
[de62360d]16// This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C
17// grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts have been
18// copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar.
19// In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax
20// that must be subsequently rejected by semantic checks. Nevertheless, there are still several semantic checks
21// required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions.
[c11e31c]22
[de62360d]23// Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with
24// the grammar.
[c11e31c]25
26// The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for:
27//
[9380add]28// designation with '=' (use ':' instead)
[c11e31c]29//
[9380add]30// This incompatibility is discussed in detail before the "designation" grammar rule. Most of the syntactic extensions
31// from ANSI90 to ANSI11 C are marked with the comment "C99/C11".
[f9c3100]32
[e16eb460]33// This grammar also has two levels of extensions. The first extensions cover most of the GCC C extensions. All of the
[9380add]34// syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall (CFA), which
35// fixes several of C's outstanding problems and extends C with many modern language concepts. All of the syntactic
36// extensions for CFA C are marked with the comment "CFA".
[51b73452]37
38%{
[ec3f9c8]39#define YYDEBUG_LEXER_TEXT( yylval ) // lexer loads this up each time
[b87a5ed]40#define YYDEBUG 1 // get the pretty debugging code to compile
[201aeb9]41#define YYERROR_VERBOSE // more information in syntax errors
[51b73452]42
43#undef __GNUC_MINOR__
44
45#include <cstdio>
46#include <stack>
[9ed4f94]47using namespace std;
48
[312029a]49#include "SynTree/Declaration.h"
[51b73452]50#include "ParseNode.h"
[984dce6]51#include "TypedefTable.h"
[1db21619]52#include "TypeData.h"
[07de76b]53#include "SynTree/LinkageSpec.h"
[9ed4f94]54#include "Common/SemanticError.h" // error_str
[513e165]55#include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
[51b73452]56
[cbaee0d]57extern DeclarationNode * parseTree;
[8b7ee09]58extern LinkageSpec::Spec linkage;
[0da3e2c]59extern TypedefTable typedefTable;
60
[408ab79]61stack<LinkageSpec::Spec> linkageStack;
[7bf7fb9]62
[15697ff]63bool appendStr( string & to, string & from ) {
64 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]65 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]66 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
67 // easier to let the C compiler handle this case.
68 //
69 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
70 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
[efc8f3e]71 // e.g., u"a" U"b" L"c" is disallowed.
[15697ff]72
73 if ( from[0] != '"' ) { // encoding ?
74 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]75 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]76 yyerror( "non-matching string encodings for string-literal concatenation" );
77 return false; // parse error, must call YYERROR in action
[ea0c5e3]78 } else if ( from[1] == '8' ) {
79 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]80 } // if
81 } else {
[ea0c5e3]82 if ( from[1] == '8' ) { // move encoding to start
83 to = "u8" + to;
84 from.erase( 0, 1 ); // remove 2nd encoding
85 } else {
86 to = from[0] + to;
87 } // if
[15697ff]88 } // if
89 from.erase( 0, 1 ); // remove 2nd encoding
90 } // if
91 to += " " + from; // concatenated into single string
92 return true;
[7bf7fb9]93} // appendStr
[c0aa336]94
95DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) {
96 // distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__.
97 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier );
[6d01d89]98 for ( cur = dynamic_cast<DeclarationNode *>( cur->get_next() ); cur != nullptr; cur = dynamic_cast<DeclarationNode *>( cur->get_next() ) ) {
[c0aa336]99 cl->cloneBaseType( cur );
100 } // for
101 declList->addType( cl );
102 return declList;
103} // distAttr
104
105void distExt( DeclarationNode * declaration ) {
106 // distribute EXTENSION across all declarations
107 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
108 iter->set_extension( true );
109 } // for
110} // distExt
[fdca7c6]111
[e07caa2]112void distInl( DeclarationNode * declaration ) {
113 // distribute EXTENSION across all declarations
114 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
115 iter->set_inLine( true );
116 } // for
117} // distInl
118
[4c3ee8d]119void distQual( DeclarationNode * declaration, DeclarationNode * qualifiers ) {
[284da8c]120 // distribute qualifiers across all non-variable declarations in a distribution statemement
[4c3ee8d]121 for ( DeclarationNode * iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[284da8c]122 // SKULLDUGGERY: Distributions are parsed inside out, so qualifiers are added to declarations inside out. Since
123 // addQualifiers appends to the back of the list, the forall clauses are in the wrong order (right to left). To
124 // get the qualifiers in the correct order and still use addQualifiers (otherwise, 90% of addQualifiers has to
125 // be copied to add to front), the appropriate forall pointers are interchanged before calling addQualifiers.
126 DeclarationNode * clone = qualifiers->clone();
127 if ( qualifiers->type ) { // forall clause ? (handles SC)
128 if ( iter->type->kind == TypeData::Aggregate ) { // struct/union ?
129 swap( clone->type->forall, iter->type->aggregate.params );
130 iter->addQualifiers( clone );
131 } else if ( iter->type->kind == TypeData::AggregateInst && iter->type->aggInst.aggregate->aggregate.body ) { // struct/union ?
132 // Create temporary node to hold aggregate, call addQualifiers as above, then put nodes back together.
133 DeclarationNode newnode;
134 swap( newnode.type, iter->type->aggInst.aggregate );
135 swap( clone->type->forall, newnode.type->aggregate.params );
136 newnode.addQualifiers( clone );
137 swap( newnode.type, iter->type->aggInst.aggregate );
138 } else if ( iter->type->kind == TypeData::Function ) { // routines ?
139 swap( clone->type->forall, iter->type->forall );
140 iter->addQualifiers( clone );
141 } // if
142 } else { // just SC qualifiers
143 iter->addQualifiers( clone );
144 } // if
[4c3ee8d]145 } // for
[284da8c]146 delete qualifiers;
147} // distQual
[4c3ee8d]148
[c38ae92]149// There is an ambiguity for inline generic-routine return-types and generic routines.
150// forall( otype T ) struct S { int i; } bar( T ) {}
151// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
152// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]153// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
154// forall( otype T ) struct S { int T; };
155// forall( otype W ) bar( W ) {}
[c38ae92]156
157void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]158 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]159 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
160 declSpec->type->aggregate.params = nullptr;
161 } // if
162} // rebindForall
163
[60a8062]164string * build_postfix_name( string * name ) {
165 *name = string("__postfix_func_") + *name;
166 return name;
[dc7db63]167} // build_postfix_name
168
[f7e4db27]169DeclarationNode * fieldDecl( DeclarationNode * typeSpec, DeclarationNode * fieldList ) {
170 if ( ! fieldList ) { // field declarator ?
[553772b]171 if ( ! ( typeSpec->type && (typeSpec->type->kind == TypeData::Aggregate || typeSpec->type->kind == TypeData::Enum) ) ) {
[f7e4db27]172 stringstream ss;
173 typeSpec->type->print( ss );
174 SemanticWarning( yylloc, Warning::SuperfluousDecl, ss.str().c_str() );
175 return nullptr;
176 } // if
177 fieldList = DeclarationNode::newName( nullptr );
178 } // if
179 return distAttr( typeSpec, fieldList ); // mark all fields in list
180} // fieldDecl
181
[cc22003]182ForCtrl * forCtrl( ExpressionNode * type, string * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]183 ConstantExpr * constant = dynamic_cast<ConstantExpr *>(type->expr.get());
[0982a05]184 if ( constant && (constant->get_constant()->get_value() == "0" || constant->get_constant()->get_value() == "1") ) {
[ec3f9c8]185 type = new ExpressionNode( new CastExpr( maybeMoveBuild<Expression>(type), new BasicType( Type::Qualifiers(), BasicType::SignedInt ) ) );
[0982a05]186 } // if
[c99a0d1]187// type = new ExpressionNode( build_func( new ExpressionNode( build_varref( new string( "__for_control_index_constraints__" ) ) ), type ) );
[f271bdd]188 return new ForCtrl(
[5753b33]189 distAttr( DeclarationNode::newTypeof( type, true ), DeclarationNode::newName( index )->addInitializer( new InitializerNode( start ) ) ),
[2d2df9f]190 // NULL comp/inc => leave blank
191 comp ? new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index ) ) ), comp ) ) : 0,
192 inc ? new ExpressionNode( build_binary_val( compop == OperKinds::LThan || compop == OperKinds::LEThan ? // choose += or -= for upto/downto
193 OperKinds::PlusAssn : OperKinds::MinusAssn, new ExpressionNode( build_varref( new string( *index ) ) ), inc ) ) : 0 );
[f271bdd]194} // forCtrl
195
[f1aeede]196ForCtrl * forCtrl( ExpressionNode * type, ExpressionNode * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]197 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(index->expr.get()) ) {
[f1aeede]198 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
[1dda8de]199 } else if ( CommaExpr * commaExpr = dynamic_cast<CommaExpr *>(index->expr.get()) ) {
[6d01d89]200 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(commaExpr->arg1 ) ) {
201 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
202 } else {
[3ca7ef3]203 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[6d01d89]204 } // if
[f1aeede]205 } else {
[3ca7ef3]206 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[f1aeede]207 } // if
[f271bdd]208} // forCtrl
209
[24711a3]210bool forall = false; // aggregate have one or more forall qualifiers ?
[d48e529]211
[201aeb9]212// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
213#define YYLLOC_DEFAULT(Cur, Rhs, N) \
214if ( N ) { \
215 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
216 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
217 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
218 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
219 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
220} else { \
221 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
222 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
223 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
224}
[51b73452]225%}
226
[15697ff]227%define parse.error verbose
228
[201aeb9]229// Types declaration for productions
[0982a05]230%union {
[a67b60e]231 Token tok;
232 ParseNode * pn;
233 ExpressionNode * en;
234 DeclarationNode * decl;
[312029a]235 AggregateDecl::Aggregate aggKey;
[07de76b]236 TypeDecl::Kind tclass;
[a67b60e]237 StatementNode * sn;
[135b431]238 WaitForStmt * wfs;
[e612146c]239 Expression * constant;
[473d1da0]240 CondCtl * ifctl;
[f271bdd]241 ForCtrl * fctl;
[cc22003]242 enum OperKinds compop;
[a67b60e]243 LabelNode * label;
244 InitializerNode * in;
245 OperKinds op;
246 std::string * str;
247 bool flag;
[307a732]248 CatchStmt::Kind catch_kind;
[d807ca28]249 GenericExpr * genexpr;
[a67b60e]250}
251
[c11e31c]252//************************* TERMINAL TOKENS ********************************
[51b73452]253
[c11e31c]254// keywords
[51b73452]255%token TYPEDEF
[a7c90d4]256%token EXTERN STATIC AUTO REGISTER
257%token THREADLOCAL // C11
258%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
259%token NORETURN // C11
[51b73452]260%token CONST VOLATILE
[b87a5ed]261%token RESTRICT // C99
[a7c90d4]262%token ATOMIC // C11
[1f652a7]263%token FORALL MUTEX VIRTUAL VTABLE COERCE // CFA
[72457b6]264%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]265%token BOOL COMPLEX IMAGINARY // C99
[f1da02c]266%token INT128 UINT128 uuFLOAT80 uuFLOAT128 // GCC
[e15853c]267%token uFLOAT16 uFLOAT32 uFLOAT32X uFLOAT64 uFLOAT64X uFLOAT128 // GCC
[15f769c]268%token DECIMAL32 DECIMAL64 DECIMAL128 // GCC
[72457b6]269%token ZERO_T ONE_T // CFA
[1f652a7]270%token SIZEOF TYPEOF VALIST AUTO_TYPE // GCC
271%token OFFSETOF BASETYPEOF TYPEID // CFA
[51b73452]272%token ENUM STRUCT UNION
[c27fb59]273%token EXCEPTION // CFA
[553772b]274%token GENERATOR COROUTINE MONITOR THREAD // CFA
[a7c90d4]275%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[25744d2]276// %token RESUME // CFA
[1f652a7]277%token LABEL // GCC
[25744d2]278%token SUSPEND // CFA
[b87a5ed]279%token ATTRIBUTE EXTENSION // GCC
[51b73452]280%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[4744074]281%token CHOOSE FALLTHRU FALLTHROUGH WITH WHEN WAITFOR // CFA
282%token DISABLE ENABLE TRY THROW THROWRESUME AT // CFA
[b87a5ed]283%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
[a7c90d4]284%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
[51b73452]285
[c11e31c]286// names and constants: lexer differentiates between identifier and typedef names
[6e50a6b]287%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDIMname TYPEDEFname TYPEGENname
[9fb1367]288%token<tok> TIMEOUT WOR CATCH RECOVER CATCHRESUME FIXUP FINALLY // CFA
289%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
[61fc4f6]290%token<tok> DIRECTIVE
[1b29996]291// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
292// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
293// converted into the tuple index (.)(1). e.g., 3.x
[930f69e]294%token<tok> FLOATING_DECIMALconstant FLOATING_FRACTIONconstant FLOATINGconstant
[51b73452]295
[c11e31c]296// multi-character operators
[b87a5ed]297%token ARROW // ->
298%token ICR DECR // ++ --
299%token LS RS // << >>
300%token LE GE EQ NE // <= >= == !=
301%token ANDAND OROR // && ||
302%token ELLIPSIS // ...
303
[e5f2a67]304%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
[b87a5ed]305%token PLUSassign MINUSassign // += -=
306%token LSassign RSassign // <<= >>=
307%token ANDassign ERassign ORassign // &= ^= |=
[51b73452]308
[d69f4bb4]309%token ErangeUpEq ErangeDown ErangeDownEq // ~= -~ -~=
[e7aed49]310%token ATassign // @=
[097e2b0]311
[e16eb460]312%type<tok> identifier identifier_at identifier_or_type_name attr_name
[5b2edbc]313%type<tok> quasi_keyword
[ab57786]314%type<constant> string_literal
315%type<str> string_literal_list
[51b73452]316
[c11e31c]317// expressions
[d1625f8]318%type<en> constant
[b87a5ed]319%type<en> tuple tuple_expression_list
[f9c3100]320%type<op> ptrref_operator unary_operator assignment_operator simple_assignment_operator compound_assignment_operator
[b87a5ed]321%type<en> primary_expression postfix_expression unary_expression
[4a063df]322%type<en> cast_expression_list cast_expression exponential_expression multiplicative_expression additive_expression
[994d080]323%type<en> shift_expression relational_expression equality_expression
324%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
325%type<en> logical_AND_expression logical_OR_expression
326%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]327%type<en> comma_expression comma_expression_opt
[e16eb460]328%type<en> argument_expression_list_opt argument_expression_list argument_expression default_initializer_opt
[473d1da0]329%type<ifctl> conditional_declaration
[6d01d89]330%type<fctl> for_control_expression for_control_expression_list
[cc22003]331%type<compop> inclexcl
[51b73452]332%type<en> subrange
[c0aa336]333%type<decl> asm_name_opt
[67d4e37]334%type<en> asm_operands_opt asm_operands_list asm_operand
[7f5566b]335%type<label> label_list
[d1625f8]336%type<en> asm_clobbers_list_opt
[7f5566b]337%type<flag> asm_volatile_opt
[cbce272]338%type<en> handler_predicate_opt
[67d4e37]339%type<genexpr> generic_association generic_assoc_list
[51b73452]340
[c11e31c]341// statements
[9bd6105]342%type<sn> statement labeled_statement compound_statement
343%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]344%type<sn> selection_statement if_statement
[6a276a0]345%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]346%type<en> case_value
347%type<sn> case_clause case_value_list case_label case_label_list
[efc8f3e]348%type<sn> iteration_statement jump_statement
[9bd6105]349%type<sn> expression_statement asm_statement
[c453ac4]350%type<sn> with_statement
351%type<en> with_clause_opt
[51d6d6a]352%type<sn> exception_statement handler_clause finally_clause
353%type<catch_kind> handler_key
[b6b3c42]354%type<sn> mutex_statement
[9bd6105]355%type<en> when_clause when_clause_opt waitfor timeout
[135b431]356%type<sn> waitfor_statement
[51d6d6a]357%type<wfs> waitfor_clause
[51b73452]358
[c11e31c]359// declarations
[c0aa336]360%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
361%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
362%type<decl> abstract_parameter_declaration
[51b73452]363
[e307e12]364%type<aggKey> aggregate_key aggregate_data aggregate_control
[d0ffed1]365%type<decl> aggregate_type aggregate_type_nobody
[51b73452]366
[9997fee]367%type<decl> assertion assertion_list assertion_list_opt
[51b73452]368
[25744d2]369%type<en> bit_subrange_size_opt bit_subrange_size
[51b73452]370
[84d58c5]371%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[1f652a7]372%type<decl> vtable vtable_opt default_opt
[51b73452]373
[4040425]374%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]375
376%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]377%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]378
[d0ffed1]379%type<decl> elaborated_type elaborated_type_nobody
[51b73452]380
[d0ffed1]381%type<decl> enumerator_list enum_type enum_type_nobody
[51b73452]382%type<en> enumerator_value_opt
383
[3d56d15b]384%type<decl> external_definition external_definition_list external_definition_list_opt
385
386%type<decl> exception_declaration
[51b73452]387
[e07caa2]388%type<decl> field_declaration_list_opt field_declaration field_declaring_list_opt field_declarator field_abstract_list_opt field_abstract
[679e644]389%type<en> field field_name_list field_name fraction_constants_opt
[51b73452]390
[4d51835]391%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]392
[d3bc0ad]393%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
394%type<decl> identifier_list
[51b73452]395
[c0aa336]396%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
397%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
398%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]399
[c0aa336]400%type<decl> cfa_array_parameter_1st_dimension
[51b73452]401
[679e644]402%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list cfa_field_abstract_list
[c0aa336]403%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]404
[c0aa336]405%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
406%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]407
[40de461]408%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]409
[c0aa336]410%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]411
[b9be000b]412%type<decl> c_declaration static_assert
[c0aa336]413%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]414%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]415
[2a8427c6]416%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]417
[2871210]418%type<decl> paren_identifier paren_type
[51b73452]419
[0da3e2c]420%type<decl> storage_class storage_class_list
[51b73452]421
[d0ffed1]422%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]423
[5a51798]424%type<tclass> type_class new_type_class
[51b73452]425%type<decl> type_declarator type_declarator_name type_declaring_list
426
[84d58c5]427%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
[f9c3100]428%type<decl> typedef_name typedef_declaration typedef_expression
[c0aa336]429
430%type<decl> variable_type_redeclarator type_ptr type_array type_function
431
432%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]433
[84d58c5]434%type<decl> type type_no_function
435%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]436
[284da8c]437%type<en> type_parameters_opt type_list
[51b73452]438
[a16a7ec]439%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[f9c3100]440%type<decl> type_specifier type_specifier_nobody
[51b73452]441
[c0aa336]442%type<decl> variable_declarator variable_ptr variable_array variable_function
443%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]444
[f9c3100]445%type<decl> attribute_list_opt attribute_list attribute attribute_name_list attribute_name
[1db21619]446
[c11e31c]447// initializers
[7fdb94e1]448%type<in> initializer initializer_list_opt initializer_opt
[51b73452]449
[c11e31c]450// designators
[51b73452]451%type<en> designator designator_list designation
452
453
[65d6de4]454// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
455// .---------. matches IF '(' comma_expression ')' statement . (reduce)
456// if ( C ) S1 else S2
457// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]458// Similar issues exit with the waitfor statement.
[51b73452]459
[1efa1e1]460// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
461// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[9fb1367]462%precedence THEN // rule precedence for IF/WAITFOR statement
463%precedence WOR // token precedence for start of WOR in WAITFOR statement
464%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
465%precedence CATCH // token precedence for start of TIMEOUT in WAITFOR statement
466%precedence RECOVER // token precedence for start of TIMEOUT in WAITFOR statement
467%precedence CATCHRESUME // token precedence for start of TIMEOUT in WAITFOR statement
468%precedence FIXUP // token precedence for start of TIMEOUT in WAITFOR statement
469%precedence FINALLY // token precedence for start of TIMEOUT in WAITFOR statement
470%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
471
[51b73452]472
[65d6de4]473// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
474// forall( otype T ) struct Foo { T v; };
475// .-----. matches pointer to function returning a generic (which is impossible without a type)
476// Foo ( *fp )( int );
477// `---' matches start of TYPEGENname '('
[fc20514]478// must be:
[a16a7ec]479// Foo( int ) ( *fp )( int );
[fc20514]480// The same problem occurs here:
481// forall( otype T ) struct Foo { T v; } ( *fp )( int );
482// must be:
483// forall( otype T ) struct Foo { T v; } ( int ) ( *fp )( int );
[65d6de4]484
485// Order of these lines matters (low-to-high precedence).
486%precedence TYPEGENname
[284da8c]487%precedence '}'
[65d6de4]488%precedence '('
489
[c786e1d]490// %precedence RESUME
491// %precedence '{'
492// %precedence ')'
493
[f38e7d7]494%locations // support location tracking for error messages
[930f69e]495
[b87a5ed]496%start translation_unit // parse-tree root
[51b73452]497
498%%
[c11e31c]499//************************* Namespace Management ********************************
500
[3d26610]501// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
502// which are lexically identical.
[c11e31c]503//
[3d26610]504// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
505// foo f; // to allow it to appear in this context
[c11e31c]506//
[3d26610]507// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
508// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
509// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
510// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
511// must be distinguished by the lexical scanner.
[c11e31c]512//
[3d26610]513// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
514// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
515// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
516// each context that introduces a name scope, a new level is created in the type table and that level is popped on
517// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
518// This requires distinguishing between type names that are local to the current declaration scope and those that
519// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]520//
[3d26610]521// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
522// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
523// around the list separator.
524//
525// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
526// push pop push pop
[51b73452]527
528push:
[ab57786]529 { typedefTable.enterScope(); }
[4d51835]530 ;
[51b73452]531
532pop:
[ab57786]533 { typedefTable.leaveScope(); }
[4d51835]534 ;
[51b73452]535
[c11e31c]536//************************* CONSTANTS ********************************
[51b73452]537
538constant:
[de62360d]539 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]540 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]541 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
542 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]543 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
544 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]545 ;
[51b73452]546
[5b2edbc]547quasi_keyword: // CFA
548 TIMEOUT
549 | WOR
[9fb1367]550 | CATCH
551 | RECOVER
552 | CATCHRESUME
553 | FIXUP
554 | FINALLY
[5b2edbc]555 ;
556
[033ff37]557identifier:
[4d51835]558 IDENTIFIER
[5b2edbc]559 | quasi_keyword
[e16eb460]560 ;
561
562identifier_at:
563 identifier
[679e644]564 | '@' // CFA
565 { Token tok = { new string( DeclarationNode::anonymous.newName() ), yylval.tok.loc }; $$ = tok; }
[4d51835]566 ;
[51b73452]567
[ab57786]568string_literal:
569 string_literal_list { $$ = build_constantStr( *$1 ); }
570 ;
571
[b87a5ed]572string_literal_list: // juxtaposed strings are concatenated
[ab57786]573 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]574 | string_literal_list STRINGliteral
575 {
[15697ff]576 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]577 delete $2; // allocated by lexer
[ab57786]578 $$ = $1; // conversion from tok to str
[7bf7fb9]579 }
[4d51835]580 ;
[51b73452]581
[c11e31c]582//************************* EXPRESSIONS ********************************
[51b73452]583
584primary_expression:
[4d51835]585 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]586 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]587 | quasi_keyword
588 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[6e50a6b]589 | TYPEDIMname // CFA, generic length argument
590 // { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( DeclarationNode::newFromTypedef( $1 ) ) ) ); }
591 // { $$ = new ExpressionNode( build_varref( $1 ) ); }
592 { $$ = new ExpressionNode( build_dimensionref( $1 ) ); }
[1b29996]593 | tuple
[4d51835]594 | '(' comma_expression ')'
595 { $$ = $2; }
596 | '(' compound_statement ')' // GCC, lambda expression
[408ab79]597 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast<CompoundStmt *>(maybeMoveBuild<Statement>($2) ) ) ); }
[033ff37]598 | type_name '.' identifier // CFA, nested type
[203c667]599 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[679e644]600 | type_name '.' '[' field_name_list ']' // CFA, nested type / tuple field selector
[203c667]601 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]602 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]603 {
604 // add the missing control expression to the GenericExpr and return it
605 $5->control = maybeMoveBuild<Expression>( $3 );
606 $$ = new ExpressionNode( $5 );
607 }
[c786e1d]608 // | RESUME '(' comma_expression ')'
609 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
610 // | RESUME '(' comma_expression ')' compound_statement
611 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
[24c3b67]612 ;
613
614generic_assoc_list: // C11
[d807ca28]615 generic_association
[24c3b67]616 | generic_assoc_list ',' generic_association
[d807ca28]617 {
618 // steal the association node from the singleton and delete the wrapper
619 $1->associations.splice($1->associations.end(), $3->associations);
620 delete $3;
621 $$ = $1;
622 }
[24c3b67]623 ;
624
625generic_association: // C11
626 type_no_function ':' assignment_expression
[d807ca28]627 {
628 // create a GenericExpr wrapper with one association pair
[408ab79]629 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>( $3 ) } } );
[d807ca28]630 }
[24c3b67]631 | DEFAULT ':' assignment_expression
[408ab79]632 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>( $3 ) } } ); }
[4d51835]633 ;
[51b73452]634
635postfix_expression:
[4d51835]636 primary_expression
[1d71208]637 | postfix_expression '[' assignment_expression ',' tuple_expression_list ']'
638 // Historic, transitional: Disallow commas in subscripts.
639 // Switching to this behaviour may help check if a C compatibilty case uses comma-exprs in subscripts.
640 // { SemanticError( yylloc, "New array subscript is currently unimplemented." ); $$ = nullptr; }
641 // Current: Commas in subscripts make tuples.
642 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $5 ) ) )) ) ); }
[7fdb94e1]643 | postfix_expression '[' assignment_expression ']'
[c6b1105]644 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]645 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
646 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
647 // equivalent to the old x[i,j].
[7fdb94e1]648 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[cbbd8fd7]649 | postfix_expression '{' argument_expression_list_opt '}' // CFA, constructor call
[bd3d9e4]650 {
651 Token fn;
652 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
653 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
654 }
[cbbd8fd7]655 | postfix_expression '(' argument_expression_list_opt ')'
[d1625f8]656 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[948fdef]657 | postfix_expression '`' identifier // CFA, postfix call
[60a8062]658 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]659 | constant '`' identifier // CFA, postfix call
[60a8062]660 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]661 | string_literal '`' identifier // CFA, postfix call
[60a8062]662 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), new ExpressionNode( $1 ) ) ); }
[033ff37]663 | postfix_expression '.' identifier
[d1625f8]664 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]665 | postfix_expression '.' INTEGERconstant // CFA, tuple index
666 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]667 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
668 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[679e644]669 | postfix_expression '.' '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]670 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[e307e12]671 | postfix_expression '.' aggregate_control
[312029a]672 { $$ = new ExpressionNode( build_keyword_cast( $3, $1 ) ); }
[033ff37]673 | postfix_expression ARROW identifier
[ee27df2]674 { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); }
[861799c7]675 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
676 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[679e644]677 | postfix_expression ARROW '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]678 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]679 | postfix_expression ICR
[d1625f8]680 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]681 | postfix_expression DECR
[d1625f8]682 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]683 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]684 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]685 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]686 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[cbbd8fd7]687 | '^' primary_expression '{' argument_expression_list_opt '}' // CFA, destructor call
[097e2b0]688 {
[9706554]689 Token fn;
[ecb27a7]690 fn.str = new string( "^?{}" ); // location undefined
691 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]692 }
[4d51835]693 ;
[51b73452]694
[cbbd8fd7]695argument_expression_list_opt:
[757ffed]696 // empty
697 { $$ = nullptr; }
[e16eb460]698 | argument_expression_list
699 ;
700
701argument_expression_list:
702 argument_expression
[cbbd8fd7]703 | argument_expression_list_opt ',' argument_expression
[4a063df]704 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]705 ;
[51b73452]706
707argument_expression:
[757ffed]708 '@' // CFA, default parameter
[679e644]709 { SemanticError( yylloc, "Default parameter for argument is currently unimplemented." ); $$ = nullptr; }
710 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]711 | assignment_expression
712 ;
[b87a5ed]713
[679e644]714field_name_list: // CFA, tuple field selector
[4d51835]715 field
[4a063df]716 | field_name_list ',' field { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]717 ;
[b87a5ed]718
719field: // CFA, tuple field selector
[faddbd8]720 field_name
[930f69e]721 | FLOATING_DECIMALconstant field
722 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[679e644]723 | FLOATING_DECIMALconstant '[' field_name_list ']'
[7fdb94e1]724 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]725 | field_name '.' field
[bf32bb8]726 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]727 | field_name '.' '[' field_name_list ']'
[7fdb94e1]728 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]729 | field_name ARROW field
[bf32bb8]730 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]731 | field_name ARROW '[' field_name_list ']'
[7fdb94e1]732 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]733 ;
[51b73452]734
[faddbd8]735field_name:
[df22130]736 INTEGERconstant fraction_constants_opt
[8780e30]737 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]738 | FLOATINGconstant fraction_constants_opt
[8780e30]739 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[e16eb460]740 | identifier_at fraction_constants_opt // CFA, allow anonymous fields
[4cb935e]741 {
[84d58c5]742 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
743 }
[1b29996]744 ;
745
[df22130]746fraction_constants_opt:
[1b29996]747 // empty
[8780e30]748 { $$ = nullptr; }
[df22130]749 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]750 {
[930f69e]751 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]752 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
753 }
[faddbd8]754 ;
755
[51b73452]756unary_expression:
[4d51835]757 postfix_expression
[c6b1105]758 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
759 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]760 | constant
[ab57786]761 | string_literal
[d1625f8]762 { $$ = new ExpressionNode( $1 ); }
[4d51835]763 | EXTENSION cast_expression // GCC
[e04ef3a]764 { $$ = $2->set_extension( true ); }
[c6b1105]765 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
766 // { * X; } // dereference X
767 // { * int X; } // CFA declaration of pointer to int
[51e076e]768 | ptrref_operator cast_expression // CFA
[9706554]769 {
770 switch ( $1 ) {
[d9e2280]771 case OperKinds::AddressOf:
[408ab79]772 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) );
[9706554]773 break;
[d9e2280]774 case OperKinds::PointTo:
[d1625f8]775 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]776 break;
[5809461]777 case OperKinds::And:
[408ab79]778 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) ) );
[5809461]779 break;
[9706554]780 default:
781 assert( false );
782 }
783 }
[4d51835]784 | unary_operator cast_expression
[d1625f8]785 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]786 | ICR unary_expression
[d1625f8]787 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]788 | DECR unary_expression
[d1625f8]789 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]790 | SIZEOF unary_expression
[408ab79]791 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[84d58c5]792 | SIZEOF '(' type_no_function ')'
[db70fe4]793 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]794 | ALIGNOF unary_expression // GCC, variable alignment
[408ab79]795 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[a2e0687]796 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]797 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[033ff37]798 | OFFSETOF '(' type_no_function ',' identifier ')'
[d1625f8]799 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[1f652a7]800 | TYPEID '(' type_no_function ')'
801 {
802 SemanticError( yylloc, "typeid name is currently unimplemented." ); $$ = nullptr;
803 // $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) );
804 }
[4d51835]805 ;
[51b73452]806
[dd51906]807ptrref_operator:
[d9e2280]808 '*' { $$ = OperKinds::PointTo; }
809 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]810 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]811 | ANDAND { $$ = OperKinds::And; }
[dd51906]812 ;
813
[51b73452]814unary_operator:
[d9e2280]815 '+' { $$ = OperKinds::UnPlus; }
816 | '-' { $$ = OperKinds::UnMinus; }
817 | '!' { $$ = OperKinds::Neg; }
818 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]819 ;
[51b73452]820
821cast_expression:
[4d51835]822 unary_expression
[84d58c5]823 | '(' type_no_function ')' cast_expression
[d1625f8]824 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[e307e12]825 | '(' aggregate_control '&' ')' cast_expression // CFA
[312029a]826 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[24711a3]827 | '(' aggregate_control '*' ')' cast_expression // CFA
828 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[fae90d5f]829 | '(' VIRTUAL ')' cast_expression // CFA
[408ab79]830 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]831 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[408ab79]832 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $5 ), maybeMoveBuildType( $3 ) ) ); }
[1528a2c]833 | '(' RETURN type_no_function ')' cast_expression // CFA
834 { SemanticError( yylloc, "Return cast is currently unimplemented." ); $$ = nullptr; }
835 | '(' COERCE type_no_function ')' cast_expression // CFA
836 { SemanticError( yylloc, "Coerce cast is currently unimplemented." ); $$ = nullptr; }
837 | '(' qualifier_cast_list ')' cast_expression // CFA
838 { SemanticError( yylloc, "Qualifier cast is currently unimplemented." ); $$ = nullptr; }
[84d58c5]839// | '(' type_no_function ')' tuple
[1b29996]840// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]841 ;
[51b73452]842
[1528a2c]843qualifier_cast_list:
844 cast_modifier type_qualifier_name
845 | cast_modifier MUTEX
846 | qualifier_cast_list cast_modifier type_qualifier_name
847 | qualifier_cast_list cast_modifier MUTEX
848 ;
849
850cast_modifier:
851 '-'
852 | '+'
853 ;
854
[994d080]855exponential_expression:
[4d51835]856 cast_expression
[994d080]857 | exponential_expression '\\' cast_expression
[e5f2a67]858 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]859 ;
860
861multiplicative_expression:
862 exponential_expression
863 | multiplicative_expression '*' exponential_expression
[d1625f8]864 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]865 | multiplicative_expression '/' exponential_expression
[d1625f8]866 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]867 | multiplicative_expression '%' exponential_expression
[d1625f8]868 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]869 ;
[51b73452]870
871additive_expression:
[4d51835]872 multiplicative_expression
873 | additive_expression '+' multiplicative_expression
[d1625f8]874 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]875 | additive_expression '-' multiplicative_expression
[d1625f8]876 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]877 ;
[51b73452]878
879shift_expression:
[4d51835]880 additive_expression
881 | shift_expression LS additive_expression
[d1625f8]882 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]883 | shift_expression RS additive_expression
[d1625f8]884 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]885 ;
[51b73452]886
887relational_expression:
[4d51835]888 shift_expression
889 | relational_expression '<' shift_expression
[d1625f8]890 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]891 | relational_expression '>' shift_expression
[d1625f8]892 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]893 | relational_expression LE shift_expression
[d1625f8]894 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]895 | relational_expression GE shift_expression
[d1625f8]896 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]897 ;
[51b73452]898
899equality_expression:
[4d51835]900 relational_expression
901 | equality_expression EQ relational_expression
[d1625f8]902 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]903 | equality_expression NE relational_expression
[d1625f8]904 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]905 ;
[51b73452]906
907AND_expression:
[4d51835]908 equality_expression
909 | AND_expression '&' equality_expression
[d1625f8]910 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]911 ;
[51b73452]912
913exclusive_OR_expression:
[4d51835]914 AND_expression
915 | exclusive_OR_expression '^' AND_expression
[d1625f8]916 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]917 ;
[51b73452]918
919inclusive_OR_expression:
[4d51835]920 exclusive_OR_expression
921 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]922 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]923 ;
[51b73452]924
925logical_AND_expression:
[4d51835]926 inclusive_OR_expression
927 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]928 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]929 ;
[51b73452]930
931logical_OR_expression:
[4d51835]932 logical_AND_expression
933 | logical_OR_expression OROR logical_AND_expression
[d1625f8]934 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]935 ;
[51b73452]936
937conditional_expression:
[4d51835]938 logical_OR_expression
939 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]940 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]941 // FIX ME: computes $1 twice
[4d51835]942 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]943 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]944 ;
[51b73452]945
946constant_expression:
[4d51835]947 conditional_expression
948 ;
[51b73452]949
950assignment_expression:
[4d51835]951 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
952 conditional_expression
953 | unary_expression assignment_operator assignment_expression
[9867cdb]954 {
[25744d2]955// if ( $2 == OperKinds::AtAssn ) {
956// SemanticError( yylloc, "C @= assignment is currently unimplemented." ); $$ = nullptr;
957// } else {
[9867cdb]958 $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) );
[25744d2]959// } // if
[9867cdb]960 }
[7fdb94e1]961 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]962 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]963 ;
[51b73452]964
965assignment_expression_opt:
[4d51835]966 // empty
[d1625f8]967 { $$ = nullptr; }
[4d51835]968 | assignment_expression
969 ;
[b87a5ed]970
[9706554]971assignment_operator:
[f9c3100]972 simple_assignment_operator
973 | compound_assignment_operator
974 ;
975
976simple_assignment_operator:
[d9e2280]977 '=' { $$ = OperKinds::Assign; }
[f9c3100]978 | ATassign { $$ = OperKinds::AtAssn; } // CFA
979 ;
980
981compound_assignment_operator:
982 EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]983 | MULTassign { $$ = OperKinds::MulAssn; }
984 | DIVassign { $$ = OperKinds::DivAssn; }
985 | MODassign { $$ = OperKinds::ModAssn; }
986 | PLUSassign { $$ = OperKinds::PlusAssn; }
987 | MINUSassign { $$ = OperKinds::MinusAssn; }
988 | LSassign { $$ = OperKinds::LSAssn; }
989 | RSassign { $$ = OperKinds::RSAssn; }
990 | ANDassign { $$ = OperKinds::AndAssn; }
991 | ERassign { $$ = OperKinds::ERAssn; }
992 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]993 ;
[9706554]994
[b87a5ed]995tuple: // CFA, tuple
[de62360d]996 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]997 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]998// '[' ']'
999// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]1000// | '[' push assignment_expression pop ']'
[1b29996]1001// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]1002 '[' ',' tuple_expression_list ']'
1003 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
1004 | '[' push assignment_expression pop ',' tuple_expression_list ']'
[4a063df]1005 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $6 ) ) )); }
[4d51835]1006 ;
[51b73452]1007
1008tuple_expression_list:
[0a6d8204]1009 assignment_expression
1010 | '@' // CFA
1011 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
1012 | tuple_expression_list ',' assignment_expression
[4a063df]1013 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[0a6d8204]1014 | tuple_expression_list ',' '@'
1015 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
[4d51835]1016 ;
[51b73452]1017
1018comma_expression:
[4d51835]1019 assignment_expression
[9706554]1020 | comma_expression ',' assignment_expression
[408ab79]1021 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1022 ;
[51b73452]1023
1024comma_expression_opt:
[4d51835]1025 // empty
[58dd019]1026 { $$ = nullptr; }
[4d51835]1027 | comma_expression
1028 ;
[51b73452]1029
[c11e31c]1030//*************************** STATEMENTS *******************************
[51b73452]1031
1032statement:
[4d51835]1033 labeled_statement
1034 | compound_statement
[c0a33d2]1035 | expression_statement
[4d51835]1036 | selection_statement
1037 | iteration_statement
1038 | jump_statement
[8b47e50]1039 | with_statement
[b6b3c42]1040 | mutex_statement
[5b2edbc]1041 | waitfor_statement
[4d51835]1042 | exception_statement
[2a8427c6]1043 | enable_disable_statement
[fae90d5f]1044 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]1045 | asm_statement
[61fc4f6]1046 | DIRECTIVE
[6d539f83]1047 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]1048 ;
[51b73452]1049
1050labeled_statement:
[033ff37]1051 // labels cannot be identifiers 0 or 1
[44a81853]1052 identifier_or_type_name ':' attribute_list_opt statement
[6d01d89]1053 { $$ = $4->add_label( $1, $3 ); }
[4d51835]1054 ;
[51b73452]1055
1056compound_statement:
[4d51835]1057 '{' '}'
[e82aa9df]1058 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]1059 | '{' push
[5e25953]1060 local_label_declaration_opt // GCC, local labels appear at start of block
[9bd6105]1061 statement_decl_list // C99, intermix declarations and statements
[c0aa336]1062 pop '}'
[35718a9]1063 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]1064 ;
[b87a5ed]1065
[9bd6105]1066statement_decl_list: // C99
1067 statement_decl
[35718a9]1068 | statement_decl_list statement_decl
[6d01d89]1069 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1070 ;
[51b73452]1071
[9bd6105]1072statement_decl:
[4d51835]1073 declaration // CFA, new & old style declarations
[e82aa9df]1074 { $$ = new StatementNode( $1 ); }
[4d51835]1075 | EXTENSION declaration // GCC
[6d01d89]1076 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[4d51835]1077 | function_definition
[e82aa9df]1078 { $$ = new StatementNode( $1 ); }
[c0aa336]1079 | EXTENSION function_definition // GCC
[6d01d89]1080 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[35718a9]1081 | statement
[4d51835]1082 ;
[51b73452]1083
[9bd6105]1084statement_list_nodecl:
[4d51835]1085 statement
[9bd6105]1086 | statement_list_nodecl statement
[6d01d89]1087 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1088 ;
[51b73452]1089
1090expression_statement:
[4d51835]1091 comma_expression_opt ';'
[e82aa9df]1092 { $$ = new StatementNode( build_expr( $1 ) ); }
[05c941a]1093 | MUTEX '(' ')' comma_expression ';'
1094 { $$ = new StatementNode( build_mutex( nullptr, new StatementNode( build_expr( $4 ) ) ) ); }
1095 // { SemanticError( yylloc, "Mutex expression is currently unimplemented." ); $$ = nullptr; }
[4d51835]1096 ;
[51b73452]1097
1098selection_statement:
[3d26610]1099 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1100 // the inherent S/R conflict with THEN/ELSE.
1101 push if_statement pop
1102 { $$ = $2; }
[4cc585b]1103 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1104 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1105 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1106 {
[6a276a0]1107 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1108 // The semantics of the declaration list is changed to include associated initialization, which is performed
1109 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1110 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1111 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1112 // statement.
[a7741435]1113 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1114 }
[4d51835]1115 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1116 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1117 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1118 {
[6a276a0]1119 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1120 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1121 }
[4d51835]1122 ;
[b87a5ed]1123
[3d26610]1124if_statement:
[473d1da0]1125 IF '(' conditional_declaration ')' statement %prec THEN
[3d26610]1126 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1127 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[473d1da0]1128 | IF '(' conditional_declaration ')' statement ELSE statement
[a025ea8]1129 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1130 ;
1131
[473d1da0]1132conditional_declaration:
[35718a9]1133 comma_expression
[473d1da0]1134 { $$ = new CondCtl( nullptr, $1 ); }
[35718a9]1135 | c_declaration // no semi-colon
[473d1da0]1136 { $$ = new CondCtl( $1, nullptr ); }
[35718a9]1137 | cfa_declaration // no semi-colon
[473d1da0]1138 { $$ = new CondCtl( $1, nullptr ); }
[6d49ea3]1139 | declaration comma_expression // semi-colon separated
[473d1da0]1140 { $$ = new CondCtl( $1, $2 ); }
[936e9f4]1141 ;
1142
[de62360d]1143// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1144// clause allows a list of values and subranges.
[b87a5ed]1145
1146case_value: // CFA
[4d51835]1147 constant_expression { $$ = $1; }
1148 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[408ab79]1149 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1150 | subrange // CFA, subrange
1151 ;
[b87a5ed]1152
1153case_value_list: // CFA
[e82aa9df]1154 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1155 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1156 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1157 ;
[b87a5ed]1158
1159case_label: // CFA
[8688ce1]1160 CASE case_value_list ':' { $$ = $2; }
[e82aa9df]1161 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1162 // A semantic check is required to ensure only one default clause per switch/choose statement.
1163 ;
[b87a5ed]1164
[6a276a0]1165//label_list_opt:
1166// // empty
1167// | identifier_or_type_name ':'
1168// | label_list_opt identifier_or_type_name ':'
1169// ;
1170
[b87a5ed]1171case_label_list: // CFA
[4d51835]1172 case_label
[1d4580a]1173 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1174 ;
[b87a5ed]1175
1176case_clause: // CFA
[a025ea8]1177 case_label_list statement { $$ = $1->append_last_case( maybe_build_compound( $2 ) ); }
[4d51835]1178 ;
[b87a5ed]1179
1180switch_clause_list_opt: // CFA
[4d51835]1181 // empty
[58dd019]1182 { $$ = nullptr; }
[4d51835]1183 | switch_clause_list
1184 ;
[b87a5ed]1185
1186switch_clause_list: // CFA
[9bd6105]1187 case_label_list statement_list_nodecl
[e82aa9df]1188 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1189 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1190 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1191 ;
[b87a5ed]1192
[51b73452]1193iteration_statement:
[efc8f3e]1194 WHILE '(' ')' statement // CFA => while ( 1 )
[473d1da0]1195 { $$ = new StatementNode( build_while( new CondCtl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) ); }
1196 | WHILE '(' conditional_declaration ')' statement %prec THEN
[efc8f3e]1197 { $$ = new StatementNode( build_while( $3, maybe_build_compound( $5 ) ) ); }
[473d1da0]1198 | WHILE '(' conditional_declaration ')' statement ELSE statement // CFA
[3b0bc16]1199 { $$ = new StatementNode( build_while( $3, maybe_build_compound( $5 ), $7 ) ); }
[f271bdd]1200 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[a025ea8]1201 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) ); }
[efc8f3e]1202 | DO statement WHILE '(' comma_expression ')' ';' %prec THEN
1203 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
1204 | DO statement WHILE '(' comma_expression ')' ELSE statement // CFA
[3b0bc16]1205 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ), $8 ) ); }
[f1aeede]1206 | FOR '(' ')' statement // CFA => for ( ;; )
[a025ea8]1207 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[efc8f3e]1208 | FOR '(' for_control_expression_list ')' statement %prec THEN
1209 { $$ = new StatementNode( build_for( $3, maybe_build_compound( $5 ) ) ); }
1210 | FOR '(' for_control_expression_list ')' statement ELSE statement // CFA
[3b0bc16]1211 { $$ = new StatementNode( build_for( $3, maybe_build_compound( $5 ), $7 ) ); }
[a73c16e]1212 ;
1213
[6d01d89]1214for_control_expression_list:
1215 for_control_expression
1216 | for_control_expression_list ':' for_control_expression
[67d4e37]1217 // ForCtrl + ForCtrl:
1218 // init + init => multiple declaration statements that are hoisted
1219 // condition + condition => (expression) && (expression)
1220 // change + change => (expression), (expression)
1221 {
1222 $1->init->set_last( $3->init );
1223 if ( $1->condition ) {
1224 if ( $3->condition ) {
1225 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1226 } // if
1227 } else $1->condition = $3->condition;
1228 if ( $1->change ) {
1229 if ( $3->change ) {
1230 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1231 } // if
1232 } else $1->change = $3->change;
1233 $$ = $1;
1234 }
[6d01d89]1235 ;
1236
[51b73452]1237for_control_expression:
[6d01d89]1238 ';' comma_expression_opt ';' comma_expression_opt
1239 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1240 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1241 { $$ = new ForCtrl( $1, $3, $5 ); }
1242 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1243 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1244
[6d01d89]1245 | comma_expression // CFA
[f1aeede]1246 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1247 OperKinds::LThan, $1->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1248 | '=' comma_expression // CFA
[9853d9b0]1249 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1250 OperKinds::LEThan, $2->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1251 | comma_expression inclexcl comma_expression // CFA
[ee27df2]1252 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1253 | comma_expression inclexcl comma_expression '~' comma_expression // CFA
[cc22003]1254 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[cbbd8fd7]1255 | comma_expression ';' // CFA
1256 { $$ = forCtrl( new ExpressionNode( build_constantInteger( *new string( "0u" ) ) ), $1, nullptr, OperKinds::LThan, nullptr, nullptr ); }
[f1aeede]1257 | comma_expression ';' comma_expression // CFA
1258 { $$ = forCtrl( $3, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1259 OperKinds::LThan, $3->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1260 | comma_expression ';' '=' comma_expression // CFA
[332bd33]1261 { $$ = forCtrl( $4, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1262 OperKinds::LEThan, $4->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1263 | comma_expression ';' comma_expression inclexcl comma_expression // CFA
[f1aeede]1264 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1265 | comma_expression ';' comma_expression inclexcl comma_expression '~' comma_expression // CFA
[f1aeede]1266 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, $7 ); }
[67d4e37]1267
[ca33b15]1268 | comma_expression ';' TYPEDEFname // CFA, array type
1269 {
1270 SemanticError( yylloc, "Array interator is currently unimplemented." ); $$ = nullptr;
1271 $$ = forCtrl( new ExpressionNode( build_varref( $3 ) ), $1, nullptr, OperKinds::Range, nullptr, nullptr );
1272 }
[98337569]1273
[67d4e37]1274 // There is a S/R conflicit if ~ and -~ are factored out.
1275 | comma_expression ';' comma_expression '~' '@' // CFA
1276 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1277 | comma_expression ';' comma_expression ErangeDown '@' // CFA
1278 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[2d2df9f]1279 | comma_expression ';' comma_expression '~' '@' '~' comma_expression // CFA
1280 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, $7 ); }
[1b54b54]1281 | comma_expression ';' comma_expression ErangeDown '@' '~' comma_expression // CFA
1282 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, $7 ); }
[2d2df9f]1283 | comma_expression ';' comma_expression '~' '@' '~' '@' // CFA
1284 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, nullptr ); }
[d1625f8]1285 ;
[51b73452]1286
[cc22003]1287inclexcl:
1288 '~'
1289 { $$ = OperKinds::LThan; }
[d69f4bb4]1290 | ErangeUpEq
[cc22003]1291 { $$ = OperKinds::LEThan; }
[d69f4bb4]1292 | ErangeDown
1293 { $$ = OperKinds::GThan; }
1294 | ErangeDownEq
1295 { $$ = OperKinds::GEThan; }
[cc22003]1296 ;
1297
[51b73452]1298jump_statement:
[44a81853]1299 GOTO identifier_or_type_name ';'
[ab57786]1300 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1301 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1302 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1303 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1304 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1305 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
[ec3f9c8]1306 | fall_through_name ';' // CFA
[6a276a0]1307 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
[ec3f9c8]1308 | fall_through_name identifier_or_type_name ';' // CFA
[6a276a0]1309 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1310 | fall_through_name DEFAULT ';' // CFA
1311 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1312 | CONTINUE ';'
[de62360d]1313 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1314 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1315 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1316 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1317 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1318 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1319 | BREAK ';'
[de62360d]1320 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1321 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1322 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1323 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1324 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1325 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1326 | RETURN comma_expression_opt ';'
[e82aa9df]1327 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1328 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1329 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1330 | SUSPEND ';'
[427854b]1331 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1332 | SUSPEND compound_statement
[427854b]1333 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1334 | SUSPEND COROUTINE ';'
[427854b]1335 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1336 | SUSPEND COROUTINE compound_statement
[427854b]1337 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1338 | SUSPEND GENERATOR ';'
[427854b]1339 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1340 | SUSPEND GENERATOR compound_statement
[427854b]1341 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1342 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1343 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1344 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1345 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1346 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1347 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1348 ;
[51b73452]1349
[6a276a0]1350fall_through_name: // CFA
1351 FALLTHRU
1352 | FALLTHROUGH
1353 ;
1354
[8b47e50]1355with_statement:
[5b2edbc]1356 WITH '(' tuple_expression_list ')' statement
[e16eb460]1357 { $$ = new StatementNode( build_with( $3, $5 ) ); }
[5b2edbc]1358 ;
1359
[b6b3c42]1360// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1361mutex_statement:
[e16eb460]1362 MUTEX '(' argument_expression_list ')' statement
[6cebfef]1363 { $$ = new StatementNode( build_mutex( $3, $5 ) ); }
[b6b3c42]1364 ;
1365
[51d6d6a]1366when_clause:
[6a276a0]1367 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1368 ;
1369
[5b2edbc]1370when_clause_opt:
1371 // empty
[135b431]1372 { $$ = nullptr; }
[51d6d6a]1373 | when_clause
[5b2edbc]1374 ;
1375
1376waitfor:
[713926ca]1377 WAITFOR '(' cast_expression ')'
1378 { $$ = $3; }
[cbbd8fd7]1379// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1380// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1381 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1382 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1383 ;
1384
1385cast_expression_list:
1386 cast_expression
1387 | cast_expression_list ',' cast_expression
[a491a3c]1388 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1389 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1390 ;
1391
1392timeout:
[6a276a0]1393 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1394 ;
1395
1396waitfor_clause:
[51d6d6a]1397 when_clause_opt waitfor statement %prec THEN
[a025ea8]1398 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1399 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1400 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1401 | when_clause_opt timeout statement %prec THEN
[a025ea8]1402 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1403 | when_clause_opt ELSE statement
[a025ea8]1404 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[51d6d6a]1405 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
[713926ca]1406 | when_clause_opt timeout statement WOR ELSE statement
1407 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1408 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1409 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1410 ;
1411
1412waitfor_statement:
[51d6d6a]1413 when_clause_opt waitfor statement %prec THEN
[135b431]1414 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1415 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1416 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1417 ;
1418
[51b73452]1419exception_statement:
[9fb1367]1420 TRY compound_statement handler_clause %prec THEN
[e82aa9df]1421 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1422 | TRY compound_statement finally_clause
[e82aa9df]1423 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1424 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1425 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1426 ;
[51b73452]1427
1428handler_clause:
[098f7ff]1429 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1430 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1431 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1432 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1433 ;
1434
1435handler_predicate_opt:
[7fdb94e1]1436 // empty
[cbce272]1437 { $$ = nullptr; }
[6a276a0]1438 | ';' conditional_expression { $$ = $2; }
[307a732]1439 ;
1440
1441handler_key:
[6a276a0]1442 CATCH { $$ = CatchStmt::Terminate; }
[9fb1367]1443 | RECOVER { $$ = CatchStmt::Terminate; }
[6a276a0]1444 | CATCHRESUME { $$ = CatchStmt::Resume; }
[9fb1367]1445 | FIXUP { $$ = CatchStmt::Resume; }
[4d51835]1446 ;
[51b73452]1447
1448finally_clause:
[6a276a0]1449 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1450 ;
[51b73452]1451
1452exception_declaration:
[d0ffed1]1453 // No SUE declaration in parameter list.
1454 type_specifier_nobody
1455 | type_specifier_nobody declarator
[c0a33d2]1456 { $$ = $2->addType( $1 ); }
[d0ffed1]1457 | type_specifier_nobody variable_abstract_declarator
[4d51835]1458 { $$ = $2->addType( $1 ); }
[033ff37]1459 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1460 { $$ = $1->addName( $2 ); }
[c0aa336]1461 | cfa_abstract_declarator_tuple // CFA
[4d51835]1462 ;
[51b73452]1463
[2a8427c6]1464enable_disable_statement:
1465 enable_disable_key identifier_list compound_statement
1466 ;
1467
1468enable_disable_key:
1469 ENABLE
1470 | DISABLE
1471 ;
1472
[51b73452]1473asm_statement:
[ab57786]1474 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1475 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1476 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1477 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1478 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1479 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1480 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1481 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1482 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1483 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1484 ;
1485
1486asm_volatile_opt: // GCC
1487 // empty
1488 { $$ = false; }
1489 | VOLATILE
1490 { $$ = true; }
[4d51835]1491 ;
[b87a5ed]1492
1493asm_operands_opt: // GCC
[4d51835]1494 // empty
[58dd019]1495 { $$ = nullptr; } // use default argument
[4d51835]1496 | asm_operands_list
1497 ;
[b87a5ed]1498
1499asm_operands_list: // GCC
[4d51835]1500 asm_operand
1501 | asm_operands_list ',' asm_operand
[4a063df]1502 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1503 ;
[b87a5ed]1504
1505asm_operand: // GCC
[ab57786]1506 string_literal '(' constant_expression ')'
[408ab79]1507 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1508 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1509 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1510 ;
1511
[4e06c1e]1512asm_clobbers_list_opt: // GCC
[7f5566b]1513 // empty
[58dd019]1514 { $$ = nullptr; } // use default argument
[ab57786]1515 | string_literal
[d1625f8]1516 { $$ = new ExpressionNode( $1 ); }
[ab57786]1517 | asm_clobbers_list_opt ',' string_literal
[4a063df]1518 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1519 ;
[b87a5ed]1520
[7f5566b]1521label_list:
[033ff37]1522 identifier
[ab57786]1523 {
1524 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1525 delete $1; // allocated by lexer
1526 }
[033ff37]1527 | label_list ',' identifier
[ab57786]1528 {
1529 $$ = $1; $1->labels.push_back( *$3 );
1530 delete $3; // allocated by lexer
1531 }
[4d51835]1532 ;
[51b73452]1533
[c11e31c]1534//******************************* DECLARATIONS *********************************
[51b73452]1535
[b87a5ed]1536declaration_list_opt: // used at beginning of switch statement
[35718a9]1537 // empty
[58dd019]1538 { $$ = nullptr; }
[4d51835]1539 | declaration_list
1540 ;
[51b73452]1541
1542declaration_list:
[4d51835]1543 declaration
[35718a9]1544 | declaration_list declaration
1545 { $$ = $1->appendList( $2 ); }
[4d51835]1546 ;
[51b73452]1547
[407bde5]1548KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1549 // empty
[58dd019]1550 { $$ = nullptr; }
[35718a9]1551 | KR_parameter_list
[4d51835]1552 ;
[51b73452]1553
[35718a9]1554KR_parameter_list:
[4cc585b]1555 push c_declaration pop ';'
1556 { $$ = $2; }
[35718a9]1557 | KR_parameter_list push c_declaration pop ';'
[4d51835]1558 { $$ = $1->appendList( $3 ); }
1559 ;
[b87a5ed]1560
[51b1202]1561local_label_declaration_opt: // GCC, local label
[4d51835]1562 // empty
[51b1202]1563 | local_label_declaration_list
[4d51835]1564 ;
[b87a5ed]1565
[51b1202]1566local_label_declaration_list: // GCC, local label
1567 LABEL local_label_list ';'
1568 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1569 ;
[b87a5ed]1570
[51b1202]1571local_label_list: // GCC, local label
[033ff37]1572 identifier_or_type_name
1573 | local_label_list ',' identifier_or_type_name
[4d51835]1574 ;
[b87a5ed]1575
[936e9f4]1576declaration: // old & new style declarations
[35718a9]1577 c_declaration ';'
1578 | cfa_declaration ';' // CFA
[b47b827]1579 | static_assert // C11
[4d51835]1580 ;
[b87a5ed]1581
[b9be000b]1582static_assert:
1583 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1584 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1585 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1586 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1587
[de62360d]1588// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1589// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1590// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1591// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1592// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1593// block, but cannot be mixed within a specific declaration.
[c11e31c]1594//
[b87a5ed]1595// CFA C
1596// [10] int x; int x[10]; // array of 10 integers
1597// [10] * char y; char *y[10]; // array of 10 pointers to char
1598
[c0aa336]1599cfa_declaration: // CFA
[4cc585b]1600 cfa_variable_declaration
1601 | cfa_typedef_declaration
1602 | cfa_function_declaration
1603 | type_declaring_list
[2501ae5]1604 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1605 | trait_specifier
[4d51835]1606 ;
[b87a5ed]1607
[c0aa336]1608cfa_variable_declaration: // CFA
1609 cfa_variable_specifier initializer_opt
[7fdb94e1]1610 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1611 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1612 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1613 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1614 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1615 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1616 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1617 ;
[b87a5ed]1618
[c0aa336]1619cfa_variable_specifier: // CFA
[de62360d]1620 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1621 // storage-class
[c0aa336]1622 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1623 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1624 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1625 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1626 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1627 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1628 ;
[b87a5ed]1629
[c0aa336]1630cfa_function_declaration: // CFA
1631 cfa_function_specifier
1632 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1633 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1634 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1635 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1636 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1637 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1638 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1639 {
[481115f]1640 // Append the return type at the start (left-hand-side) to each identifier in the list.
1641 DeclarationNode * ret = new DeclarationNode;
1642 ret->type = maybeClone( $1->type->base );
[40de461]1643 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1644 }
1645 ;
[b87a5ed]1646
[c0aa336]1647cfa_function_specifier: // CFA
[40de461]1648// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1649// {
1650// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1651// }
[40de461]1652// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1653// {
1654// typedefTable.setNextIdentifier( *$5 );
1655// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1656// }
[40de461]1657// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1658// {
1659// typedefTable.setNextIdentifier( *$5 );
1660// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1661// }
1662// | '[' ']' typegen_name
1663 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1664 //
[40de461]1665 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1666 // '[' ']' type_specifier
1667 //
[2871210]1668 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1669 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1670 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1671 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1672 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1673 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1674 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1675 ;
[b87a5ed]1676
[c0aa336]1677cfa_function_return: // CFA
[c0a33d2]1678 '[' push cfa_parameter_list pop ']'
1679 { $$ = DeclarationNode::newTuple( $3 ); }
1680 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1681 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1682 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1683 ;
[b87a5ed]1684
[c0aa336]1685cfa_typedef_declaration: // CFA
1686 TYPEDEF cfa_variable_specifier
[4d51835]1687 {
[ecae5860]1688 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1689 $$ = $2->addTypedef();
1690 }
[c0aa336]1691 | TYPEDEF cfa_function_specifier
[4d51835]1692 {
[ecae5860]1693 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1694 $$ = $2->addTypedef();
1695 }
[033ff37]1696 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1697 {
[ecae5860]1698 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1699 $$ = $1->appendList( $1->cloneType( $5 ) );
1700 }
1701 ;
[b87a5ed]1702
[de62360d]1703// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1704// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1705
1706typedef_declaration:
[4d51835]1707 TYPEDEF type_specifier declarator
1708 {
[ecae5860]1709 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1710 $$ = $3->addType( $2 )->addTypedef();
1711 }
1712 | typedef_declaration pop ',' push declarator
1713 {
[ecae5860]1714 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1715 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1716 }
[de62360d]1717 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1718 {
[ecae5860]1719 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1720 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1721 }
1722 | type_specifier TYPEDEF declarator
1723 {
[ecae5860]1724 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1725 $$ = $3->addType( $1 )->addTypedef();
1726 }
1727 | type_specifier TYPEDEF type_qualifier_list declarator
1728 {
[ecae5860]1729 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1730 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1731 }
1732 ;
[b87a5ed]1733
[721f17a]1734typedef_expression:
[25744d2]1735 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1736 TYPEDEF identifier '=' assignment_expression
[4d51835]1737 {
[25744d2]1738 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1739 }
[033ff37]1740 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1741 {
[25744d2]1742 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1743 }
1744 ;
[51b73452]1745
[c0aa336]1746c_declaration:
[4cc585b]1747 declaration_specifier declaring_list
[7fdb94e1]1748 { $$ = distAttr( $1, $2 ); }
[4cc585b]1749 | typedef_declaration
[25744d2]1750 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1751 | sue_declaration_specifier
[4d51835]1752 ;
[51b73452]1753
1754declaring_list:
[de62360d]1755 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1756 // storage-class
[c0aa336]1757 declarator asm_name_opt initializer_opt
[7fdb94e1]1758 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1759 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1760 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1761 ;
[b87a5ed]1762
1763declaration_specifier: // type specifier + storage class
[4d51835]1764 basic_declaration_specifier
1765 | sue_declaration_specifier
[84d58c5]1766 | type_declaration_specifier
[4d51835]1767 ;
[b87a5ed]1768
[d0ffed1]1769declaration_specifier_nobody: // type specifier + storage class - {...}
1770 // Preclude SUE declarations in restricted scopes:
1771 //
1772 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1773 //
1774 // because it is impossible to call f due to name equivalence.
1775 basic_declaration_specifier
1776 | sue_declaration_specifier_nobody
[84d58c5]1777 | type_declaration_specifier
[d0ffed1]1778 ;
1779
1780type_specifier: // type specifier
[4d51835]1781 basic_type_specifier
1782 | sue_type_specifier
[84d58c5]1783 | type_type_specifier
[4d51835]1784 ;
[b87a5ed]1785
[d0ffed1]1786type_specifier_nobody: // type specifier - {...}
1787 // Preclude SUE declarations in restricted scopes:
1788 //
1789 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1790 //
1791 // because it is impossible to call f due to name equivalence.
1792 basic_type_specifier
1793 | sue_type_specifier_nobody
[84d58c5]1794 | type_type_specifier
[d0ffed1]1795 ;
1796
[b87a5ed]1797type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1798 // empty
[58dd019]1799 { $$ = nullptr; }
[4d51835]1800 | type_qualifier_list
1801 ;
[51b73452]1802
1803type_qualifier_list:
[de62360d]1804 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1805 //
[de62360d]1806 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1807 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1808 // appeared only once.
[4d51835]1809 type_qualifier
1810 | type_qualifier_list type_qualifier
1811 { $$ = $1->addQualifiers( $2 ); }
1812 ;
[51b73452]1813
1814type_qualifier:
[4d51835]1815 type_qualifier_name
[5e25953]1816 | attribute // trick handles most atrribute locations
[4d51835]1817 ;
[51b73452]1818
1819type_qualifier_name:
[4d51835]1820 CONST
[738e304]1821 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1822 | RESTRICT
[738e304]1823 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1824 | VOLATILE
[738e304]1825 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1826 | ATOMIC
[738e304]1827 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1828 | forall
1829 ;
1830
1831forall:
[35718a9]1832 FORALL '(' type_parameter_list ')' // CFA
1833 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1834 ;
[51b73452]1835
1836declaration_qualifier_list:
[4d51835]1837 storage_class_list
[de62360d]1838 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1839 { $$ = $1->addQualifiers( $2 ); }
1840 | declaration_qualifier_list type_qualifier_list storage_class_list
1841 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1842 ;
[51b73452]1843
1844storage_class_list:
[de62360d]1845 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1846 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1847 //
[de62360d]1848 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1849 // specifiers in a declaration.
[4d51835]1850 storage_class
1851 | storage_class_list storage_class
1852 { $$ = $1->addQualifiers( $2 ); }
1853 ;
[51b73452]1854
1855storage_class:
[4d51835]1856 EXTERN
[68fe077a]1857 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1858 | STATIC
[68fe077a]1859 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1860 | AUTO
[68fe077a]1861 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1862 | REGISTER
[68fe077a]1863 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1864 | THREADLOCAL // C11
[68fe077a]1865 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1866 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1867 | INLINE // C99
[ddfd945]1868 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1869 | FORTRAN // C99
[ddfd945]1870 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1871 | NORETURN // C11
[ddfd945]1872 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1873 ;
[51b73452]1874
1875basic_type_name:
[201aeb9]1876 VOID
[4d51835]1877 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1878 | BOOL // C99
1879 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1880 | CHAR
1881 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1882 | INT
1883 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1884 | INT128
1885 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1886 | UINT128
1887 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1888 | FLOAT
1889 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1890 | DOUBLE
1891 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1892 | uuFLOAT80
1893 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1894 | uuFLOAT128
1895 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1896 | uFLOAT16
1897 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1898 | uFLOAT32
1899 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1900 | uFLOAT32X
1901 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1902 | uFLOAT64
1903 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1904 | uFLOAT64X
1905 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1906 | uFLOAT128
1907 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[15f769c]1908 | DECIMAL32
1909 { SemanticError( yylloc, "_Decimal32 is currently unimplemented." ); $$ = nullptr; }
1910 | DECIMAL64
1911 { SemanticError( yylloc, "_Decimal64 is currently unimplemented." ); $$ = nullptr; }
1912 | DECIMAL128
1913 { SemanticError( yylloc, "_Decimal128 is currently unimplemented." ); $$ = nullptr; }
[4d51835]1914 | COMPLEX // C99
[5b639ee]1915 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1916 | IMAGINARY // C99
[5b639ee]1917 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1918 | SIGNED
1919 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1920 | UNSIGNED
1921 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1922 | SHORT
1923 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1924 | LONG
1925 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1926 | VALIST // GCC, __builtin_va_list
1927 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1928 | AUTO_TYPE
1929 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[1f652a7]1930 | vtable
1931 ;
1932
1933vtable_opt:
1934 // empty
1935 { $$ = nullptr; }
[9380add]1936 | vtable
[1f652a7]1937 ;
1938
1939vtable:
[8f6f3729]1940 VTABLE '(' type_name ')' default_opt
[93bbbc4]1941 { $$ = DeclarationNode::newVtableType( $3 ); }
1942 // { SemanticError( yylloc, "vtable is currently unimplemented." ); $$ = nullptr; }
[1f652a7]1943 ;
1944
1945default_opt:
1946 // empty
1947 { $$ = nullptr; }
1948 | DEFAULT
1949 { SemanticError( yylloc, "vtable default is currently unimplemented." ); $$ = nullptr; }
[4d51835]1950 ;
[51b73452]1951
1952basic_declaration_specifier:
[4d51835]1953 // A semantic check is necessary for conflicting storage classes.
1954 basic_type_specifier
1955 | declaration_qualifier_list basic_type_specifier
1956 { $$ = $2->addQualifiers( $1 ); }
1957 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1958 { $$ = $1->addQualifiers( $2 ); }
1959 | basic_declaration_specifier storage_class type_qualifier_list
1960 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1961 | basic_declaration_specifier storage_class basic_type_specifier
1962 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1963 ;
[51b73452]1964
1965basic_type_specifier:
[84d58c5]1966 direct_type
[f38e7d7]1967 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1968 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1969 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1970 ;
[51b73452]1971
[84d58c5]1972direct_type:
[4d51835]1973 basic_type_name
1974 | type_qualifier_list basic_type_name
1975 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1976 | direct_type type_qualifier
[4d51835]1977 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1978 | direct_type basic_type_name
[4d51835]1979 { $$ = $1->addType( $2 ); }
1980 ;
[51b73452]1981
[84d58c5]1982indirect_type:
[b6ad601]1983 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]1984 { $$ = $3; }
[b6ad601]1985 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]1986 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]1987 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
1988 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
1989 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
1990 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]1991 | ZERO_T // CFA
1992 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1993 | ONE_T // CFA
1994 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1995 ;
[51b73452]1996
[d0ffed1]1997sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1998 sue_type_specifier
1999 | declaration_qualifier_list sue_type_specifier
2000 { $$ = $2->addQualifiers( $1 ); }
2001 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
2002 { $$ = $1->addQualifiers( $2 ); }
2003 | sue_declaration_specifier storage_class type_qualifier_list
2004 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2005 ;
[51b73452]2006
[d0ffed1]2007sue_type_specifier: // struct, union, enum + type specifier
2008 elaborated_type
[fdca7c6]2009 | type_qualifier_list
2010 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
2011 elaborated_type
2012 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2013 | sue_type_specifier type_qualifier
[284da8c]2014 {
2015 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
2016 $$ = $1->addQualifiers( $2 );
2017 }
[4d51835]2018 ;
[51b73452]2019
[d0ffed1]2020sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
2021 sue_type_specifier_nobody
2022 | declaration_qualifier_list sue_type_specifier_nobody
2023 { $$ = $2->addQualifiers( $1 ); }
2024 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
2025 { $$ = $1->addQualifiers( $2 ); }
2026 | sue_declaration_specifier_nobody storage_class type_qualifier_list
2027 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2028 ;
2029
2030sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
2031 elaborated_type_nobody
2032 | type_qualifier_list elaborated_type_nobody
2033 { $$ = $2->addQualifiers( $1 ); }
2034 | sue_type_specifier_nobody type_qualifier
2035 { $$ = $1->addQualifiers( $2 ); }
2036 ;
2037
[84d58c5]2038type_declaration_specifier:
2039 type_type_specifier
2040 | declaration_qualifier_list type_type_specifier
[4d51835]2041 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]2042 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]2043 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]2044 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]2045 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2046 ;
[b87a5ed]2047
[84d58c5]2048type_type_specifier: // typedef types
2049 type_name
2050 | type_qualifier_list type_name
2051 { $$ = $2->addQualifiers( $1 ); }
2052 | type_type_specifier type_qualifier
2053 { $$ = $1->addQualifiers( $2 ); }
2054 ;
2055
2056type_name:
[4d51835]2057 TYPEDEFname
2058 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]2059 | '.' TYPEDEFname
[47498bd]2060 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]2061 | type_name '.' TYPEDEFname
[c5d7701]2062 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]2063 | typegen_name
2064 | '.' typegen_name
[47498bd]2065 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]2066 | type_name '.' typegen_name
[c5d7701]2067 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]2068 ;
2069
2070typegen_name: // CFA
[65d6de4]2071 TYPEGENname
2072 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2073 | TYPEGENname '(' ')'
[67cf18c]2074 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2075 | TYPEGENname '(' type_list ')'
[84d58c5]2076 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2077 ;
[51b73452]2078
[d0ffed1]2079elaborated_type: // struct, union, enum
[c0aa336]2080 aggregate_type
2081 | enum_type
[4d51835]2082 ;
[51b73452]2083
[d0ffed1]2084elaborated_type_nobody: // struct, union, enum - {...}
2085 aggregate_type_nobody
2086 | enum_type_nobody
2087 ;
2088
2089aggregate_type: // struct, union
[fc20514]2090 aggregate_key attribute_list_opt
2091 { forall = false; } // reset
2092 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2093 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[73f04fd]2094 | aggregate_key attribute_list_opt identifier
[fdca7c6]2095 {
[26ef3b2]2096 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2097 forall = false; // reset
2098 }
[284da8c]2099 '{' field_declaration_list_opt '}' type_parameters_opt
[73f04fd]2100 { $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 ); }
[f9c3100]2101 | aggregate_key attribute_list_opt TYPEDEFname // unqualified type name
[407bde5]2102 {
[f9c3100]2103 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2104 forall = false; // reset
2105 }
[284da8c]2106 '{' field_declaration_list_opt '}' type_parameters_opt
[f9c3100]2107 {
2108 DeclarationNode::newFromTypedef( $3 );
2109 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2110 }
2111 | aggregate_key attribute_list_opt TYPEGENname // unqualified type name
2112 {
2113 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
2114 forall = false; // reset
2115 }
2116 '{' field_declaration_list_opt '}' type_parameters_opt
2117 {
2118 DeclarationNode::newFromTypeGen( $3, nullptr );
2119 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2120 }
[d0ffed1]2121 | aggregate_type_nobody
2122 ;
2123
[284da8c]2124type_parameters_opt:
2125 // empty
2126 { $$ = nullptr; } %prec '}'
2127 | '(' type_list ')'
2128 { $$ = $2; }
2129 ;
2130
[d0ffed1]2131aggregate_type_nobody: // struct, union - {...}
[73f04fd]2132 aggregate_key attribute_list_opt identifier
[84d58c5]2133 {
[26ef3b2]2134 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2135 forall = false; // reset
[84d58c5]2136 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2137 }
[73f04fd]2138 | aggregate_key attribute_list_opt type_name
[65d6de4]2139 {
[fc20514]2140 forall = false; // reset
[65d6de4]2141 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2142 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2143 // delete newFromTypeGen.
2144 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2145 $3->type->symbolic.name = nullptr;
2146 $3->type->symbolic.actuals = nullptr;
2147 delete $3;
2148 }
[4d51835]2149 ;
[51b73452]2150
2151aggregate_key:
[e307e12]2152 aggregate_data
2153 | aggregate_control
2154 ;
2155
2156aggregate_data:
[1f652a7]2157 STRUCT vtable_opt
[24711a3]2158 { $$ = AggregateDecl::Struct; }
[c0aa336]2159 | UNION
[24711a3]2160 { $$ = AggregateDecl::Union; }
[e307e12]2161 | EXCEPTION // CFA
[24711a3]2162 { $$ = AggregateDecl::Exception; }
[1f652a7]2163 // { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2164 ;
2165
2166aggregate_control: // CFA
[cbbd8fd7]2167 MONITOR
[24711a3]2168 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2169 | MUTEX STRUCT
[24711a3]2170 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2171 | GENERATOR
[24711a3]2172 { $$ = AggregateDecl::Generator; }
[cbbd8fd7]2173 | MUTEX GENERATOR
[aeb5d0d]2174 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2175 | COROUTINE
[24711a3]2176 { $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2177 | MUTEX COROUTINE
[aeb5d0d]2178 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2179 | THREAD
[24711a3]2180 { $$ = AggregateDecl::Thread; }
[cbbd8fd7]2181 | MUTEX THREAD
[aeb5d0d]2182 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2183 ;
[51b73452]2184
[7fdb94e1]2185field_declaration_list_opt:
[5d125e4]2186 // empty
[58dd019]2187 { $$ = nullptr; }
[7fdb94e1]2188 | field_declaration_list_opt field_declaration
[a7741435]2189 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2190 ;
[51b73452]2191
2192field_declaration:
[679e644]2193 type_specifier field_declaring_list_opt ';'
[f7e4db27]2194 { $$ = fieldDecl( $1, $2 ); }
[679e644]2195 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2196 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2197 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2198 {
[dea36ee]2199 if ( ! $3 ) { // field declarator ?
2200 $3 = DeclarationNode::newName( nullptr );
2201 } // if
[679a260]2202 $3->inLine = true;
[679e644]2203 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2204 distInl( $3 );
[8f91c9ae]2205 }
[e307e12]2206 | INLINE aggregate_control ';' // CFA
2207 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2208 | typedef_declaration ';' // CFA
2209 | cfa_field_declaring_list ';' // CFA, new style field declaration
2210 | EXTENSION cfa_field_declaring_list ';' // GCC
2211 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2212 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2213 { $$ = $2; } // mark all fields in list
[46fa473]2214 | cfa_typedef_declaration ';' // CFA
[b47b827]2215 | static_assert // C11
[4d51835]2216 ;
[b87a5ed]2217
[679e644]2218field_declaring_list_opt:
2219 // empty
2220 { $$ = nullptr; }
2221 | field_declarator
2222 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2223 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2224 ;
[51b73452]2225
[679e644]2226field_declarator:
[e07caa2]2227 bit_subrange_size // C special case, no field name
[4d51835]2228 { $$ = DeclarationNode::newBitfield( $1 ); }
2229 | variable_declarator bit_subrange_size_opt
[679e644]2230 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2231 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2232 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2233 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2234 { $$ = $1->addBitfield( $2 ); }
[679e644]2235 ;
2236
[e07caa2]2237field_abstract_list_opt:
2238 // empty
[dea36ee]2239 { $$ = nullptr; }
[e07caa2]2240 | field_abstract
2241 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2242 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2243 ;
2244
[e07caa2]2245field_abstract:
[f7e4db27]2246 // no bit fields
[e07caa2]2247 variable_abstract_declarator
[679e644]2248 ;
2249
2250cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2251 // bit-fields are handled by C declarations
[033ff37]2252 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2253 { $$ = $1->addName( $2 ); }
[033ff37]2254 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2255 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2256 ;
2257
2258cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2259 // bit-fields are handled by C declarations
[679e644]2260 cfa_abstract_declarator_tuple
2261 | cfa_field_abstract_list ','
2262 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2263 ;
[51b73452]2264
2265bit_subrange_size_opt:
[4d51835]2266 // empty
[58dd019]2267 { $$ = nullptr; }
[4d51835]2268 | bit_subrange_size
2269 ;
[51b73452]2270
2271bit_subrange_size:
[c786e1d]2272 ':' assignment_expression
[4d51835]2273 { $$ = $2; }
2274 ;
[51b73452]2275
[d0ffed1]2276enum_type: // enum
[f9c3100]2277 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2278 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[f9c3100]2279 | ENUM attribute_list_opt identifier
[d0ffed1]2280 { typedefTable.makeTypedef( *$3 ); }
2281 '{' enumerator_list comma_opt '}'
2282 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[f9c3100]2283 | ENUM attribute_list_opt typedef_name // unqualified type name
[407bde5]2284 '{' enumerator_list comma_opt '}'
[408ab79]2285 { $$ = DeclarationNode::newEnum( $3->name, $5, true )->addQualifiers( $2 ); }
[f9c3100]2286 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2287 {
[98337569]2288 if ( $3->storageClasses.val != 0 || $3->type->qualifiers.val != 0 ) { SemanticError( yylloc, "storage-class and CV qualifiers are not meaningful for enumeration constants, which are const." ); }
[8bea701]2289 SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr;
2290 }
2291 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt identifier attribute_list_opt
2292 {
[98337569]2293 if ( $3->storageClasses.val != 0 || $3->type->qualifiers.val != 0 ) { SemanticError( yylloc, "storage-class and CV qualifiers are not meaningful for enumeration constants, which are const." ); }
[8bea701]2294 typedefTable.makeTypedef( *$6 );
2295 }
2296 '{' enumerator_list comma_opt '}'
2297 {
2298 SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr;
2299 }
[f9c3100]2300 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt typedef_name attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2301 {
[98337569]2302 if ( $3->storageClasses.val != 0 || $3->type->qualifiers.val != 0 ) { SemanticError( yylloc, "storage-class and CV qualifiers are not meaningful for enumeration constants, which are const." ); }
[8bea701]2303 typedefTable.makeTypedef( *$6->name );
2304 SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr;
2305 }
[d0ffed1]2306 | enum_type_nobody
2307 ;
2308
2309enum_type_nobody: // enum - {...}
[f9c3100]2310 ENUM attribute_list_opt identifier
2311 { typedefTable.makeTypedef( *$3 ); $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 ); }
2312 | ENUM attribute_list_opt type_name // qualified type name
2313 { typedefTable.makeTypedef( *$3->type->symbolic.name ); $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 ); }
[4d51835]2314 ;
[51b73452]2315
2316enumerator_list:
[033ff37]2317 identifier_or_type_name enumerator_value_opt
[4d51835]2318 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[f9c3100]2319 | INLINE type_name
2320 { $$ = DeclarationNode::newEnumConstant( new string("inline"), nullptr ); }
[033ff37]2321 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[4d51835]2322 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
[f9c3100]2323 | enumerator_list ',' INLINE type_name enumerator_value_opt
2324 { $$ = $1->appendList( DeclarationNode::newEnumConstant( new string("inline"), nullptr ) ); }
[4d51835]2325 ;
[51b73452]2326
2327enumerator_value_opt:
[4d51835]2328 // empty
[58dd019]2329 { $$ = nullptr; }
[408ab79]2330 // | '=' constant_expression
2331 // { $$ = $2; }
[f9c3100]2332 | simple_assignment_operator initializer
[408ab79]2333 { $$ = $2->get_expression(); } // FIX ME: enum only deals with constant_expression
[4d51835]2334 ;
[51b73452]2335
[5a51798]2336cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2337 // empty
[2a8427c6]2338 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2339 | ELLIPSIS
[58dd019]2340 { $$ = nullptr; }
[2a8427c6]2341 | cfa_abstract_parameter_list
[c0aa336]2342 | cfa_parameter_list
[c0a33d2]2343 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2344 { $$ = $1->appendList( $5 ); }
2345 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2346 { $$ = $1->addVarArgs(); }
[c0a33d2]2347 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2348 { $$ = $1->addVarArgs(); }
2349 ;
[b87a5ed]2350
[c0aa336]2351cfa_parameter_list: // CFA
2352 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2353 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2354 cfa_parameter_declaration
[c0a33d2]2355 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2356 { $$ = $1->appendList( $5 ); }
2357 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2358 { $$ = $1->appendList( $5 ); }
2359 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2360 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2361 ;
[b87a5ed]2362
[c0aa336]2363cfa_abstract_parameter_list: // CFA, new & old style abstract
2364 cfa_abstract_parameter_declaration
[c0a33d2]2365 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2366 { $$ = $1->appendList( $5 ); }
[4d51835]2367 ;
[51b73452]2368
2369parameter_type_list_opt:
[4d51835]2370 // empty
[58dd019]2371 { $$ = nullptr; }
[2a8427c6]2372 | ELLIPSIS
2373 { $$ = nullptr; }
2374 | parameter_list
[4d51835]2375 | parameter_list pop ',' push ELLIPSIS
2376 { $$ = $1->addVarArgs(); }
2377 ;
[b87a5ed]2378
2379parameter_list: // abstract + real
[4d51835]2380 abstract_parameter_declaration
2381 | parameter_declaration
2382 | parameter_list pop ',' push abstract_parameter_declaration
2383 { $$ = $1->appendList( $5 ); }
2384 | parameter_list pop ',' push parameter_declaration
2385 { $$ = $1->appendList( $5 ); }
2386 ;
[51b73452]2387
[de62360d]2388// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2389// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2390
[c0aa336]2391cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2392 parameter_declaration
[5a51798]2393 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2394 { $$ = $1->addName( $2 ); }
[5a51798]2395 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2396 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2397 { $$ = $1->addName( $2 ); }
[5a51798]2398 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2399 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2400 | cfa_function_specifier
[4d51835]2401 ;
[b87a5ed]2402
[c0aa336]2403cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2404 abstract_parameter_declaration
[c0aa336]2405 | cfa_identifier_parameter_declarator_no_tuple
2406 | cfa_abstract_tuple
2407 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2408 | type_qualifier_list cfa_abstract_tuple
[4d51835]2409 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2410 | cfa_abstract_function
[4d51835]2411 ;
[51b73452]2412
2413parameter_declaration:
[d0ffed1]2414 // No SUE declaration in parameter list.
[5a51798]2415 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2416 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2417 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2418 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2419 ;
[51b73452]2420
2421abstract_parameter_declaration:
[5a51798]2422 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2423 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2424 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2425 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2426 ;
[51b73452]2427
[c11e31c]2428// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2429// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2430// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2431
[b87a5ed]2432identifier_list: // K&R-style parameter list => no types
[033ff37]2433 identifier
[4d51835]2434 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2435 | identifier_list ',' identifier
[4d51835]2436 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2437 ;
[51b73452]2438
[2871210]2439identifier_or_type_name:
[4d51835]2440 identifier
2441 | TYPEDEFname
2442 | TYPEGENname
2443 ;
[51b73452]2444
[84d58c5]2445type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2446 cfa_abstract_declarator_tuple // CFA
[4d51835]2447 | type_specifier
[c0aa336]2448 | type_specifier abstract_declarator
[4d51835]2449 { $$ = $2->addType( $1 ); }
2450 ;
[b87a5ed]2451
[84d58c5]2452type: // typeof, assertion
2453 type_no_function
[c0aa336]2454 | cfa_abstract_function // CFA
[4d51835]2455 ;
[51b73452]2456
2457initializer_opt:
[4d51835]2458 // empty
[58dd019]2459 { $$ = nullptr; }
[f9c3100]2460 | simple_assignment_operator initializer { $$ = $1 == OperKinds::Assign ? $2 : $2->set_maybeConstructed( false ); }
2461 | '=' VOID { $$ = new InitializerNode( true ); }
[63b3279e]2462 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2463 ;
[51b73452]2464
2465initializer:
[de62360d]2466 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2467 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2468 ;
[51b73452]2469
[7fdb94e1]2470initializer_list_opt:
[097e2b0]2471 // empty
[58dd019]2472 { $$ = nullptr; }
[097e2b0]2473 | initializer
[4d51835]2474 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2475 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
[63b3279e]2476 | initializer_list_opt ',' designation initializer { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2477 ;
[b87a5ed]2478
[de62360d]2479// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2480// '=' to separator the designator from the initializer value, as in:
[c11e31c]2481//
[b87a5ed]2482// int x[10] = { [1] = 3 };
[c11e31c]2483//
[de62360d]2484// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2485// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2486// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2487// shift/reduce conflicts
[51b73452]2488
2489designation:
[4d51835]2490 designator_list ':' // C99, CFA uses ":" instead of "="
[e16eb460]2491 | identifier_at ':' // GCC, field name
[d1625f8]2492 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2493 ;
[51b73452]2494
[b87a5ed]2495designator_list: // C99
[4d51835]2496 designator
[2871210]2497 | designator_list designator
[4a063df]2498 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2499 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2500 ;
[51b73452]2501
2502designator:
[e16eb460]2503 '.' identifier_at // C99, field name
[d1625f8]2504 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2505 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2506 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2507 { $$ = $3; }
[c0a33d2]2508 | '[' push subrange pop ']' // CFA, multiple array elements
2509 { $$ = $3; }
2510 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2511 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2512 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2513 { $$ = $4; }
[4d51835]2514 ;
[51b73452]2515
[de62360d]2516// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2517// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2518//
2519// Overloading: function, data, and operator identifiers may be overloaded.
2520//
[3ca7ef3]2521// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2522// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2523// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2524//
[de62360d]2525// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2526// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2527//
2528// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2529// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2530// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2531// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2532// on type arguments of polymorphic functions.
[c11e31c]2533
[b87a5ed]2534type_parameter_list: // CFA
[67cf18c]2535 type_parameter
2536 | type_parameter_list ',' type_parameter
[4d51835]2537 { $$ = $1->appendList( $3 ); }
2538 ;
[b87a5ed]2539
[84d58c5]2540type_initializer_opt: // CFA
2541 // empty
2542 { $$ = nullptr; }
2543 | '=' type
2544 { $$ = $2; }
2545 ;
2546
[b87a5ed]2547type_parameter: // CFA
[033ff37]2548 type_class identifier_or_type_name
[408ab79]2549 {
2550 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[ec3f9c8]2551 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated, use T " ); }
2552 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated, use T &" ); }
2553 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated, use T ..." ); }
[fd54fef]2554 }
[5a51798]2555 type_initializer_opt assertion_list_opt
[67cf18c]2556 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2557 | identifier_or_type_name new_type_class
2558 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2559 type_initializer_opt assertion_list_opt
2560 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2561 | '[' identifier_or_type_name ']'
[b66d14a]2562 {
[6e50a6b]2563 typedefTable.addToScope( *$2, TYPEDIMname, "9" );
2564 $$ = DeclarationNode::newTypeParam( TypeDecl::Dimension, $2 );
[b66d14a]2565 }
[5a51798]2566 // | type_specifier identifier_parameter_declarator
[9997fee]2567 | assertion_list
[07de76b]2568 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2569 ;
[b87a5ed]2570
[5a51798]2571new_type_class: // CFA
2572 // empty
2573 { $$ = TypeDecl::Otype; }
2574 | '&'
2575 { $$ = TypeDecl::Dtype; }
2576 | '*'
[b66d14a]2577 { $$ = TypeDecl::DStype; } // dtype + sized
[2ac218d]2578 // | '(' '*' ')'
2579 // { $$ = TypeDecl::Ftype; }
[5a51798]2580 | ELLIPSIS
2581 { $$ = TypeDecl::Ttype; }
2582 ;
2583
[b87a5ed]2584type_class: // CFA
[4040425]2585 OTYPE
[07de76b]2586 { $$ = TypeDecl::Otype; }
[4d51835]2587 | DTYPE
[07de76b]2588 { $$ = TypeDecl::Dtype; }
[8f60f0b]2589 | FTYPE
[07de76b]2590 { $$ = TypeDecl::Ftype; }
[8f60f0b]2591 | TTYPE
[07de76b]2592 { $$ = TypeDecl::Ttype; }
[4d51835]2593 ;
[b87a5ed]2594
2595assertion_list_opt: // CFA
[4d51835]2596 // empty
[58dd019]2597 { $$ = nullptr; }
[9997fee]2598 | assertion_list
2599 ;
2600
2601assertion_list: // CFA
2602 assertion
2603 | assertion_list assertion
[3ca7ef3]2604 { $$ = $1->appendList( $2 ); }
[4d51835]2605 ;
[b87a5ed]2606
2607assertion: // CFA
[033ff37]2608 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2609 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2610 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2611 { $$ = $4; }
[35718a9]2612 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2613 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2614 ;
[b87a5ed]2615
[84d58c5]2616type_list: // CFA
2617 type
[513e165]2618 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2619 | assignment_expression
[84d58c5]2620 | type_list ',' type
[4a063df]2621 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2622 | type_list ',' assignment_expression
[6e50a6b]2623 { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2624 ;
[b87a5ed]2625
2626type_declaring_list: // CFA
[4040425]2627 OTYPE type_declarator
[4d51835]2628 { $$ = $2; }
[4040425]2629 | storage_class_list OTYPE type_declarator
[4d51835]2630 { $$ = $3->addQualifiers( $1 ); }
2631 | type_declaring_list ',' type_declarator
[a7c90d4]2632 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2633 ;
[b87a5ed]2634
2635type_declarator: // CFA
[4d51835]2636 type_declarator_name assertion_list_opt
2637 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2638 | type_declarator_name assertion_list_opt '=' type
[4d51835]2639 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2640 ;
[b87a5ed]2641
2642type_declarator_name: // CFA
[033ff37]2643 identifier_or_type_name
[4d51835]2644 {
[ecae5860]2645 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2646 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2647 }
[033ff37]2648 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2649 {
[ecae5860]2650 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2651 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2652 }
2653 ;
[b87a5ed]2654
[4040425]2655trait_specifier: // CFA
[033ff37]2656 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2657 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2658 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2659 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2660 ;
[b87a5ed]2661
[84d58c5]2662trait_declaration_list: // CFA
[4040425]2663 trait_declaration
[13e8427]2664 | trait_declaration_list pop push trait_declaration
2665 { $$ = $1->appendList( $4 ); }
[4d51835]2666 ;
[b87a5ed]2667
[84d58c5]2668trait_declaration: // CFA
[13e8427]2669 cfa_trait_declaring_list ';'
2670 | trait_declaring_list ';'
[4d51835]2671 ;
[b87a5ed]2672
[c0aa336]2673cfa_trait_declaring_list: // CFA
2674 cfa_variable_specifier
2675 | cfa_function_specifier
2676 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2677 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2678 ;
[b87a5ed]2679
[4040425]2680trait_declaring_list: // CFA
[4d51835]2681 type_specifier declarator
[7fdb94e1]2682 { $$ = $2->addType( $1 ); }
[4040425]2683 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2684 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2685 ;
[51b73452]2686
[c11e31c]2687//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2688
2689translation_unit:
[3d56d15b]2690 // empty, input file
[4d51835]2691 | external_definition_list
[a7741435]2692 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2693 ;
[51b73452]2694
2695external_definition_list:
[35718a9]2696 push external_definition pop
2697 { $$ = $2; }
[fc20514]2698 | external_definition_list push external_definition pop
2699 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2700 ;
[51b73452]2701
2702external_definition_list_opt:
[4d51835]2703 // empty
[58dd019]2704 { $$ = nullptr; }
[3d56d15b]2705 | external_definition_list
2706 ;
2707
2708up:
[fc20514]2709 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2710 ;
2711
2712down:
2713 { typedefTable.down(); }
[4d51835]2714 ;
[51b73452]2715
2716external_definition:
[2d019af]2717 DIRECTIVE
2718 { $$ = DeclarationNode::newDirectiveStmt( new StatementNode( build_directive( $1 ) ) ); }
2719 | declaration
[4d51835]2720 | external_function_definition
[ecae5860]2721 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2722 {
2723 distExt( $2 ); // mark all fields in list
2724 $$ = $2;
2725 }
[e994912]2726 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
[5e25953]2727 { $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) ); }
[aac37fa]2728 | EXTERN STRINGliteral
2729 {
2730 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
2731 linkage = LinkageSpec::update( yylloc, linkage, $2 );
2732 }
2733 up external_definition down
2734 {
2735 linkage = linkageStack.top();
2736 linkageStack.pop();
2737 $$ = $5;
2738 }
[c0aa336]2739 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2740 {
[3b8e52c]2741 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2742 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2743 }
[3d56d15b]2744 '{' up external_definition_list_opt down '}'
[4d51835]2745 {
2746 linkage = linkageStack.top();
2747 linkageStack.pop();
[3d56d15b]2748 $$ = $6;
[8e9cbb2]2749 }
[9997fee]2750 | type_qualifier_list
2751 {
[3d56d15b]2752 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2753 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2754 }
2755 '{' up external_definition_list_opt down '}' // CFA, namespace
2756 {
[4c3ee8d]2757 distQual( $5, $1 );
[fc20514]2758 forall = false;
[3d56d15b]2759 $$ = $5;
[9997fee]2760 }
2761 | declaration_qualifier_list
2762 {
[4c3ee8d]2763 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2764 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2765 }
2766 '{' up external_definition_list_opt down '}' // CFA, namespace
2767 {
[4c3ee8d]2768 distQual( $5, $1 );
[fc20514]2769 forall = false;
[3d56d15b]2770 $$ = $5;
[9997fee]2771 }
2772 | declaration_qualifier_list type_qualifier_list
2773 {
[3d56d15b]2774 if ( ($1->type && $1->type->qualifiers.val) || $2->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2775 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2776 }
[3d56d15b]2777 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2778 {
[284da8c]2779 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2780 forall = false;
[3d56d15b]2781 $$ = $6;
[9997fee]2782 }
[4d51835]2783 ;
2784
2785external_function_definition:
2786 function_definition
[de62360d]2787 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2788 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2789 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2790 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2791 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2792 | function_declarator compound_statement
[c0a33d2]2793 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2794 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2795 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2796 ;
[51b73452]2797
[8b47e50]2798with_clause_opt:
2799 // empty
[9997fee]2800 { $$ = nullptr; forall = false; }
[578e6037]2801 | WITH '(' tuple_expression_list ')'
[9997fee]2802 { $$ = $3; forall = false; }
[8b47e50]2803 ;
2804
[51b73452]2805function_definition:
[8b47e50]2806 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2807 {
[481115f]2808 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2809 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2810 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2811 $$ = $1;
[4d51835]2812 }
[8b47e50]2813 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2814 {
[c38ae92]2815 rebindForall( $1, $2 );
[7fdb94e1]2816 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2817 }
2818 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2819 {
2820 rebindForall( $1, $2 );
[5fcba14]2821 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2822 }
[a16a7ec]2823 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2824 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2825 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2826 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2827 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2828 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2829 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2830 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2831 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2832
2833 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2834 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2835 {
[c38ae92]2836 rebindForall( $1, $2 );
[5fcba14]2837 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2838 }
[a16a7ec]2839 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2840 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2841 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2842 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2843 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2844 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2845 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2846 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2847 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2848 ;
[51b73452]2849
2850declarator:
[4d51835]2851 variable_declarator
[c6b1105]2852 | variable_type_redeclarator
[4d51835]2853 | function_declarator
2854 ;
[51b73452]2855
2856subrange:
[4d51835]2857 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]2858 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]2859 ;
[b87a5ed]2860
2861asm_name_opt: // GCC
[4d51835]2862 // empty
[58dd019]2863 { $$ = nullptr; }
2864 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2865 {
2866 DeclarationNode * name = new DeclarationNode();
2867 name->asmName = $3;
2868 $$ = name->addQualifiers( $5 );
2869 }
[4d51835]2870 ;
[b87a5ed]2871
2872attribute_list_opt: // GCC
[4d51835]2873 // empty
[58dd019]2874 { $$ = nullptr; }
[4d51835]2875 | attribute_list
2876 ;
[b87a5ed]2877
2878attribute_list: // GCC
[4d51835]2879 attribute
2880 | attribute_list attribute
[1db21619]2881 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2882 ;
[b87a5ed]2883
2884attribute: // GCC
[44a81853]2885 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2886 { $$ = $4; }
[4d51835]2887 ;
[b87a5ed]2888
[44a81853]2889attribute_name_list: // GCC
2890 attribute_name
2891 | attribute_name_list ',' attribute_name
[c0aa336]2892 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2893 ;
[b87a5ed]2894
[44a81853]2895attribute_name: // GCC
[4d51835]2896 // empty
[44a81853]2897 { $$ = nullptr; }
2898 | attr_name
2899 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]2900 | attr_name '(' argument_expression_list_opt ')'
[44a81853]2901 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2902 ;
[b87a5ed]2903
[44a81853]2904attr_name: // GCC
2905 IDENTIFIER
[5b2edbc]2906 | quasi_keyword
[44a81853]2907 | TYPEDEFname
2908 | TYPEGENname
[114014c]2909 | FALLTHROUGH
2910 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2911 | CONST
[9ff56e7]2912 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2913 ;
[51b73452]2914
[c11e31c]2915// ============================================================================
[de62360d]2916// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2917// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2918// in:
[c11e31c]2919//
[b87a5ed]2920// int (*f())[10] { ... };
2921// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2922//
[de62360d]2923// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2924// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2925// ============================================================================
2926
2927// ----------------------------------------------------------------------------
[de62360d]2928// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2929// to define a variable or function prototype, e.g.:
[c11e31c]2930//
[b87a5ed]2931// valid declaration invalid definition
2932// ----------------- ------------------
[4d51835]2933// int f; int f {}
2934// int *f; int *f {}
[b87a5ed]2935// int f[10]; int f[10] {}
[4d51835]2936// int (*f)(int); int (*f)(int) {}
[c11e31c]2937//
[de62360d]2938// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2939// variable_declarator and function_declarator.
[c11e31c]2940// ----------------------------------------------------------------------------
2941
[de62360d]2942// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2943// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2944
[5e25953]2945paren_identifier:
[e16eb460]2946 identifier_at
[5e25953]2947 { $$ = DeclarationNode::newName( $1 ); }
2948 | '(' paren_identifier ')' // redundant parenthesis
2949 { $$ = $2; }
2950 ;
2951
[51b73452]2952variable_declarator:
[4d51835]2953 paren_identifier attribute_list_opt
[1db21619]2954 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2955 | variable_ptr
2956 | variable_array attribute_list_opt
[1db21619]2957 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2958 | variable_function attribute_list_opt
[1db21619]2959 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2960 ;
[51b73452]2961
2962variable_ptr:
[dd51906]2963 ptrref_operator variable_declarator
[ce8c12f]2964 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2965 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2966 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]2967 | '(' variable_ptr ')' attribute_list_opt // redundant parenthesis
2968 { $$ = $2->addQualifiers( $4 ); }
2969 | '(' attribute_list variable_ptr ')' attribute_list_opt // redundant parenthesis
2970 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]2971 ;
[51b73452]2972
2973variable_array:
[4d51835]2974 paren_identifier array_dimension
2975 { $$ = $1->addArray( $2 ); }
2976 | '(' variable_ptr ')' array_dimension
2977 { $$ = $2->addArray( $4 ); }
[5e25953]2978 | '(' attribute_list variable_ptr ')' array_dimension
2979 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
2980 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2981 { $$ = $2->addArray( $4 ); }
[5e25953]2982 | '(' attribute_list variable_array ')' multi_array_dimension // redundant parenthesis
2983 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]2984 | '(' variable_array ')' // redundant parenthesis
2985 { $$ = $2; }
[5e25953]2986 | '(' attribute_list variable_array ')' // redundant parenthesis
2987 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2988 ;
[51b73452]2989
2990variable_function:
[4d51835]2991 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2992 { $$ = $2->addParamList( $6 ); }
[5e25953]2993 | '(' attribute_list variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2994 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]2995 | '(' variable_function ')' // redundant parenthesis
2996 { $$ = $2; }
[5e25953]2997 | '(' attribute_list variable_function ')' // redundant parenthesis
2998 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2999 ;
[51b73452]3000
[c6b1105]3001// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
3002// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
3003// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]3004
3005function_declarator:
[4d51835]3006 function_no_ptr attribute_list_opt
[1db21619]3007 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3008 | function_ptr
3009 | function_array attribute_list_opt
[1db21619]3010 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3011 ;
[51b73452]3012
3013function_no_ptr:
[4d51835]3014 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3015 { $$ = $1->addParamList( $4 ); }
3016 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
3017 { $$ = $2->addParamList( $6 ); }
[5e25953]3018 | '(' attribute_list function_ptr ')' '(' push parameter_type_list_opt pop ')'
3019 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]3020 | '(' function_no_ptr ')' // redundant parenthesis
3021 { $$ = $2; }
[5e25953]3022 | '(' attribute_list function_no_ptr ')' // redundant parenthesis
3023 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3024 ;
[51b73452]3025
3026function_ptr:
[dd51906]3027 ptrref_operator function_declarator
[ce8c12f]3028 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3029 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]3030 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3031 | '(' function_ptr ')' attribute_list_opt
3032 { $$ = $2->addQualifiers( $4 ); }
3033 | '(' attribute_list function_ptr ')' attribute_list_opt
3034 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3035 ;
[51b73452]3036
3037function_array:
[4d51835]3038 '(' function_ptr ')' array_dimension
3039 { $$ = $2->addArray( $4 ); }
[5e25953]3040 | '(' attribute_list function_ptr ')' array_dimension
3041 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3042 | '(' function_array ')' multi_array_dimension // redundant parenthesis
3043 { $$ = $2->addArray( $4 ); }
[5e25953]3044 | '(' attribute_list function_array ')' multi_array_dimension // redundant parenthesis
3045 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3046 | '(' function_array ')' // redundant parenthesis
3047 { $$ = $2; }
[5e25953]3048 | '(' attribute_list function_array ')' // redundant parenthesis
3049 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3050 ;
[51b73452]3051
[c0aa336]3052// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
3053//
3054// f( a, b, c ) int a, *b, c[]; {}
3055//
3056// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
3057// returning arrays and functions versus pointers to arrays and functions.
[51b73452]3058
[c0aa336]3059KR_function_declarator:
3060 KR_function_no_ptr
3061 | KR_function_ptr
3062 | KR_function_array
[4d51835]3063 ;
[51b73452]3064
[c0aa336]3065KR_function_no_ptr:
[4d51835]3066 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
3067 { $$ = $1->addIdList( $3 ); }
[c0a33d2]3068 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3069 { $$ = $2->addParamList( $6 ); }
[5e25953]3070 | '(' attribute_list KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3071 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[c0aa336]3072 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]3073 { $$ = $2; }
[5e25953]3074 | '(' attribute_list KR_function_no_ptr ')' // redundant parenthesis
3075 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3076 ;
[51b73452]3077
[c0aa336]3078KR_function_ptr:
3079 ptrref_operator KR_function_declarator
[ce8c12f]3080 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3081 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]3082 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3083 | '(' KR_function_ptr ')'
[4d51835]3084 { $$ = $2; }
[5e25953]3085 | '(' attribute_list KR_function_ptr ')'
3086 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3087 ;
[51b73452]3088
[c0aa336]3089KR_function_array:
3090 '(' KR_function_ptr ')' array_dimension
[4d51835]3091 { $$ = $2->addArray( $4 ); }
[5e25953]3092 | '(' attribute_list KR_function_ptr ')' array_dimension
3093 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3094 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3095 { $$ = $2->addArray( $4 ); }
[5e25953]3096 | '(' attribute_list KR_function_array ')' multi_array_dimension // redundant parenthesis
3097 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3098 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]3099 { $$ = $2; }
[5e25953]3100 | '(' attribute_list KR_function_array ')' // redundant parenthesis
3101 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3102 ;
[51b73452]3103
[2871210]3104// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]3105//
[b87a5ed]3106// typedef int foo;
3107// {
3108// int foo; // redefine typedef name in new scope
3109// }
[c11e31c]3110//
[de62360d]3111// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3112// and functions versus pointers to arrays and functions.
[51b73452]3113
[2871210]3114paren_type:
[f9c3100]3115 typedef_name
[c4f68dc]3116 {
[f9c3100]3117 // hide type name in enclosing scope by variable name
3118 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
[c4f68dc]3119 }
[2871210]3120 | '(' paren_type ')'
[4d51835]3121 { $$ = $2; }
3122 ;
[51b73452]3123
[5e25953]3124variable_type_redeclarator:
3125 paren_type attribute_list_opt
3126 { $$ = $1->addQualifiers( $2 ); }
3127 | type_ptr
3128 | type_array attribute_list_opt
3129 { $$ = $1->addQualifiers( $2 ); }
3130 | type_function attribute_list_opt
3131 { $$ = $1->addQualifiers( $2 ); }
3132 ;
3133
[2871210]3134type_ptr:
[c6b1105]3135 ptrref_operator variable_type_redeclarator
[ce8c12f]3136 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3137 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3138 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3139 | '(' type_ptr ')' attribute_list_opt // redundant parenthesis
3140 { $$ = $2->addQualifiers( $4 ); }
3141 | '(' attribute_list type_ptr ')' attribute_list_opt // redundant parenthesis
3142 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3143 ;
[51b73452]3144
[2871210]3145type_array:
3146 paren_type array_dimension
[4d51835]3147 { $$ = $1->addArray( $2 ); }
[2871210]3148 | '(' type_ptr ')' array_dimension
[4d51835]3149 { $$ = $2->addArray( $4 ); }
[5e25953]3150 | '(' attribute_list type_ptr ')' array_dimension
3151 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3152 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3153 { $$ = $2->addArray( $4 ); }
[5e25953]3154 | '(' attribute_list type_array ')' multi_array_dimension // redundant parenthesis
3155 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3156 | '(' type_array ')' // redundant parenthesis
[4d51835]3157 { $$ = $2; }
[5e25953]3158 | '(' attribute_list type_array ')' // redundant parenthesis
3159 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3160 ;
[51b73452]3161
[2871210]3162type_function:
3163 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3164 { $$ = $1->addParamList( $4 ); }
[2871210]3165 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3166 { $$ = $2->addParamList( $6 ); }
[5e25953]3167 | '(' attribute_list type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3168 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[2871210]3169 | '(' type_function ')' // redundant parenthesis
[4d51835]3170 { $$ = $2; }
[5e25953]3171 | '(' attribute_list type_function ')' // redundant parenthesis
3172 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3173 ;
[51b73452]3174
[c0aa336]3175// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3176// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3177// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3178// pointers to arrays and functions.
[51b73452]3179
3180identifier_parameter_declarator:
[4d51835]3181 paren_identifier attribute_list_opt
[1db21619]3182 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3183 | '&' MUTEX paren_identifier attribute_list_opt
3184 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3185 | identifier_parameter_ptr
3186 | identifier_parameter_array attribute_list_opt
[1db21619]3187 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3188 | identifier_parameter_function attribute_list_opt
[1db21619]3189 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3190 ;
[51b73452]3191
3192identifier_parameter_ptr:
[dd51906]3193 ptrref_operator identifier_parameter_declarator
[ce8c12f]3194 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3195 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3196 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3197 | '(' identifier_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3198 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3199 ;
[51b73452]3200
3201identifier_parameter_array:
[4d51835]3202 paren_identifier array_parameter_dimension
3203 { $$ = $1->addArray( $2 ); }
3204 | '(' identifier_parameter_ptr ')' array_dimension
3205 { $$ = $2->addArray( $4 ); }
3206 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3207 { $$ = $2->addArray( $4 ); }
3208 | '(' identifier_parameter_array ')' // redundant parenthesis
3209 { $$ = $2; }
3210 ;
[51b73452]3211
3212identifier_parameter_function:
[c0a33d2]3213 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3214 { $$ = $1->addParamList( $4 ); }
3215 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3216 { $$ = $2->addParamList( $6 ); }
[4d51835]3217 | '(' identifier_parameter_function ')' // redundant parenthesis
3218 { $$ = $2; }
3219 ;
[b87a5ed]3220
[de62360d]3221// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3222// e.g.:
[c11e31c]3223//
[b87a5ed]3224// typedef int foo;
[114014c]3225// forall( otype T ) struct foo;
[b87a5ed]3226// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3227//
[c0aa336]3228// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3229
[2871210]3230type_parameter_redeclarator:
[f9c3100]3231 typedef_name attribute_list_opt
[1db21619]3232 { $$ = $1->addQualifiers( $2 ); }
[f9c3100]3233 | '&' MUTEX typedef_name attribute_list_opt
[b6b3c42]3234 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3235 | type_parameter_ptr
3236 | type_parameter_array attribute_list_opt
[1db21619]3237 { $$ = $1->addQualifiers( $2 ); }
[2871210]3238 | type_parameter_function attribute_list_opt
[1db21619]3239 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3240 ;
[51b73452]3241
[f9c3100]3242typedef_name:
[4d51835]3243 TYPEDEFname
[7fdb94e1]3244 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3245 | TYPEGENname
[7fdb94e1]3246 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3247 ;
[51b73452]3248
[2871210]3249type_parameter_ptr:
[dd51906]3250 ptrref_operator type_parameter_redeclarator
[ce8c12f]3251 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3252 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3253 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3254 | '(' type_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3255 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3256 ;
[51b73452]3257
[2871210]3258type_parameter_array:
[f9c3100]3259 typedef_name array_parameter_dimension
[4d51835]3260 { $$ = $1->addArray( $2 ); }
[2871210]3261 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3262 { $$ = $2->addArray( $4 ); }
3263 ;
[51b73452]3264
[2871210]3265type_parameter_function:
[f9c3100]3266 typedef_name '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[c0a33d2]3267 { $$ = $1->addParamList( $4 ); }
3268 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3269 { $$ = $2->addParamList( $6 ); }
[4d51835]3270 ;
[b87a5ed]3271
[de62360d]3272// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3273// which the type applies, e.g.:
[c11e31c]3274//
[b87a5ed]3275// sizeof( int );
[c0aa336]3276// sizeof( int * );
[b87a5ed]3277// sizeof( int [10] );
[c0aa336]3278// sizeof( int (*)() );
3279// sizeof( int () );
[c11e31c]3280//
[de62360d]3281// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3282// and functions versus pointers to arrays and functions.
[51b73452]3283
3284abstract_declarator:
[4d51835]3285 abstract_ptr
3286 | abstract_array attribute_list_opt
[1db21619]3287 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3288 | abstract_function attribute_list_opt
[1db21619]3289 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3290 ;
[51b73452]3291
3292abstract_ptr:
[dd51906]3293 ptrref_operator
[ce8c12f]3294 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3295 | ptrref_operator type_qualifier_list
[ce8c12f]3296 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3297 | ptrref_operator abstract_declarator
[ce8c12f]3298 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3299 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3300 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3301 | '(' abstract_ptr ')' attribute_list_opt
3302 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3303 ;
[51b73452]3304
3305abstract_array:
[4d51835]3306 array_dimension
3307 | '(' abstract_ptr ')' array_dimension
3308 { $$ = $2->addArray( $4 ); }
3309 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3310 { $$ = $2->addArray( $4 ); }
3311 | '(' abstract_array ')' // redundant parenthesis
3312 { $$ = $2; }
3313 ;
[51b73452]3314
3315abstract_function:
[c0a33d2]3316 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3317 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3318 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3319 { $$ = $2->addParamList( $6 ); }
[4d51835]3320 | '(' abstract_function ')' // redundant parenthesis
3321 { $$ = $2; }
3322 ;
[51b73452]3323
3324array_dimension:
[4d51835]3325 // Only the first dimension can be empty.
[2871210]3326 '[' ']'
[4d51835]3327 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3328 | '[' ']' multi_array_dimension
3329 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[6a99803]3330 | '[' push assignment_expression pop ',' comma_expression ']'
3331 { $$ = DeclarationNode::newArray( $3, 0, false )->addArray( DeclarationNode::newArray( $6, 0, false ) ); }
3332 // { SemanticError( yylloc, "New array dimension is currently unimplemented." ); $$ = nullptr; }
[4d51835]3333 | multi_array_dimension
3334 ;
[51b73452]3335
3336multi_array_dimension:
[c0a33d2]3337 '[' push assignment_expression pop ']'
3338 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3339 | '[' push '*' pop ']' // C99
[4d51835]3340 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3341 | multi_array_dimension '[' push assignment_expression pop ']'
3342 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3343 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3344 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3345 ;
[51b73452]3346
[c11e31c]3347// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3348// identifier to which the type applies, e.g.:
3349//
[c0aa336]3350// int f( int ); // not handled here
3351// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3352// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3353// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3354//
[de62360d]3355// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3356// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3357// special meaning of parenthesis around a typedef name:
3358//
3359// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3360// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3361// not as redundant parentheses around the identifier."
3362//
3363// For example:
3364//
3365// typedef float T;
3366// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3367// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3368// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3369// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3370//
3371// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3372// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3373// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3374// functions.
[51b73452]3375
3376abstract_parameter_declarator:
[4d51835]3377 abstract_parameter_ptr
[b6b3c42]3378 | '&' MUTEX attribute_list_opt
3379 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3380 | abstract_parameter_array attribute_list_opt
[1db21619]3381 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3382 | abstract_parameter_function attribute_list_opt
[1db21619]3383 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3384 ;
[51b73452]3385
3386abstract_parameter_ptr:
[dd51906]3387 ptrref_operator
[ce8c12f]3388 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3389 | ptrref_operator type_qualifier_list
[ce8c12f]3390 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3391 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3392 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3393 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3394 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3395 | '(' abstract_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3396 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3397 ;
[51b73452]3398
3399abstract_parameter_array:
[4d51835]3400 array_parameter_dimension
3401 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3402 { $$ = $2->addArray( $4 ); }
3403 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3404 { $$ = $2->addArray( $4 ); }
3405 | '(' abstract_parameter_array ')' // redundant parenthesis
3406 { $$ = $2; }
3407 ;
[51b73452]3408
3409abstract_parameter_function:
[c0a33d2]3410 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3411 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3412 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3413 { $$ = $2->addParamList( $6 ); }
[4d51835]3414 | '(' abstract_parameter_function ')' // redundant parenthesis
3415 { $$ = $2; }
3416 ;
[51b73452]3417
3418array_parameter_dimension:
[4d51835]3419 // Only the first dimension can be empty or have qualifiers.
3420 array_parameter_1st_dimension
3421 | array_parameter_1st_dimension multi_array_dimension
3422 { $$ = $1->addArray( $2 ); }
3423 | multi_array_dimension
3424 ;
[51b73452]3425
[c11e31c]3426// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3427//
[de62360d]3428// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3429// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3430
3431array_parameter_1st_dimension:
[2871210]3432 '[' ']'
[4d51835]3433 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3434 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3435 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3436 { $$ = DeclarationNode::newVarArray( $3 ); }
3437 | '[' push type_qualifier_list pop ']'
3438 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3439 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3440 | '[' push type_qualifier_list assignment_expression pop ']'
3441 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3442 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3443 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3444 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3445 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3446 ;
[b87a5ed]3447
[c0aa336]3448// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3449//
[c0aa336]3450// struct S {
3451// int;
3452// int *;
3453// int [10];
3454// int (*)();
3455// };
[51b73452]3456
3457variable_abstract_declarator:
[4d51835]3458 variable_abstract_ptr
3459 | variable_abstract_array attribute_list_opt
[1db21619]3460 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3461 | variable_abstract_function attribute_list_opt
[1db21619]3462 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3463 ;
[51b73452]3464
3465variable_abstract_ptr:
[dd51906]3466 ptrref_operator
[ce8c12f]3467 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3468 | ptrref_operator type_qualifier_list
[ce8c12f]3469 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3470 | ptrref_operator variable_abstract_declarator
[ce8c12f]3471 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3472 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3473 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3474 | '(' variable_abstract_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3475 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3476 ;
[51b73452]3477
3478variable_abstract_array:
[4d51835]3479 array_dimension
3480 | '(' variable_abstract_ptr ')' array_dimension
3481 { $$ = $2->addArray( $4 ); }
3482 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3483 { $$ = $2->addArray( $4 ); }
3484 | '(' variable_abstract_array ')' // redundant parenthesis
3485 { $$ = $2; }
3486 ;
[51b73452]3487
3488variable_abstract_function:
[c0a33d2]3489 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3490 { $$ = $2->addParamList( $6 ); }
[4d51835]3491 | '(' variable_abstract_function ')' // redundant parenthesis
3492 { $$ = $2; }
3493 ;
[b87a5ed]3494
[de62360d]3495// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3496// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3497
[c0aa336]3498cfa_identifier_parameter_declarator_tuple: // CFA
3499 cfa_identifier_parameter_declarator_no_tuple
3500 | cfa_abstract_tuple
3501 | type_qualifier_list cfa_abstract_tuple
[4d51835]3502 { $$ = $2->addQualifiers( $1 ); }
3503 ;
[b87a5ed]3504
[c0aa336]3505cfa_identifier_parameter_declarator_no_tuple: // CFA
3506 cfa_identifier_parameter_ptr
3507 | cfa_identifier_parameter_array
[4d51835]3508 ;
[b87a5ed]3509
[c0aa336]3510cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3511 // No SUE declaration in parameter list.
3512 ptrref_operator type_specifier_nobody
[ce8c12f]3513 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3514 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3515 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3516 | ptrref_operator cfa_abstract_function
[ce8c12f]3517 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3518 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3519 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3520 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3521 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3522 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3523 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3524 ;
[b87a5ed]3525
[c0aa336]3526cfa_identifier_parameter_array: // CFA
[de62360d]3527 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3528 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3529 '[' ']' type_specifier_nobody
[2871210]3530 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3531 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3532 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3533 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3534 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3535 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3536 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3537 | multi_array_dimension type_specifier_nobody
[4d51835]3538 { $$ = $2->addNewArray( $1 ); }
[9059213]3539
[c0aa336]3540 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3541 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3542 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3543 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3544 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3545 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3546 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3547 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3548 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3549 { $$ = $2->addNewArray( $1 ); }
3550 ;
[51b73452]3551
[c0aa336]3552cfa_array_parameter_1st_dimension:
[c0a33d2]3553 '[' push type_qualifier_list '*' pop ']' // remaining C99
3554 { $$ = DeclarationNode::newVarArray( $3 ); }
3555 | '[' push type_qualifier_list assignment_expression pop ']'
3556 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3557 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3558 // declaration_qualifier_list must be used because of shift/reduce conflict with
3559 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3560 // appear in this context.
[c0a33d2]3561 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3562 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3563 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3564 ;
[b87a5ed]3565
[de62360d]3566// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3567// identifier to which the type applies, e.g.:
[c11e31c]3568//
[b87a5ed]3569// [int] f( int ); // abstract variable parameter; no parameter name specified
3570// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3571//
3572// These rules need LR(3):
3573//
[c0aa336]3574// cfa_abstract_tuple identifier_or_type_name
[40de461]3575// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3576//
3577// since a function return type can be syntactically identical to a tuple type:
3578//
[b87a5ed]3579// [int, int] t;
3580// [int, int] f( int );
[c11e31c]3581//
[2871210]3582// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3583// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3584// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3585// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3586
[c0aa336]3587cfa_abstract_declarator_tuple: // CFA
3588 cfa_abstract_tuple
3589 | type_qualifier_list cfa_abstract_tuple
[4d51835]3590 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3591 | cfa_abstract_declarator_no_tuple
[4d51835]3592 ;
[b87a5ed]3593
[c0aa336]3594cfa_abstract_declarator_no_tuple: // CFA
3595 cfa_abstract_ptr
3596 | cfa_abstract_array
[4d51835]3597 ;
[b87a5ed]3598
[c0aa336]3599cfa_abstract_ptr: // CFA
[dd51906]3600 ptrref_operator type_specifier
[ce8c12f]3601 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3602 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3603 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3604 | ptrref_operator cfa_abstract_function
[ce8c12f]3605 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3606 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3607 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3608 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3609 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3610 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3611 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3612 ;
[b87a5ed]3613
[c0aa336]3614cfa_abstract_array: // CFA
[de62360d]3615 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3616 // empty (void) function return type.
[2871210]3617 '[' ']' type_specifier
[2298f728]3618 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3619 | '[' ']' multi_array_dimension type_specifier
[2298f728]3620 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3621 | multi_array_dimension type_specifier
3622 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3623 | '[' ']' cfa_abstract_ptr
[2298f728]3624 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3625 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3626 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3627 | multi_array_dimension cfa_abstract_ptr
[4d51835]3628 { $$ = $2->addNewArray( $1 ); }
3629 ;
[b87a5ed]3630
[c0aa336]3631cfa_abstract_tuple: // CFA
[c0a33d2]3632 '[' push cfa_abstract_parameter_list pop ']'
3633 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3634 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3635 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3636 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3637 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3638 ;
[b87a5ed]3639
[c0aa336]3640cfa_abstract_function: // CFA
[40de461]3641// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3642// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3643 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3644 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3645 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3646 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3647 ;
[b87a5ed]3648
[de62360d]3649// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3650// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3651//
[de62360d]3652// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3653// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3654//
3655// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3656// prototype-format parameter type declarators) is an obsolescent feature."
3657//
[de62360d]3658// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3659// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3660
[c11e31c]3661//************************* MISCELLANEOUS ********************************
[51b73452]3662
[b87a5ed]3663comma_opt: // redundant comma
[4d51835]3664 // empty
3665 | ','
3666 ;
[51b73452]3667
[5a51798]3668default_initializer_opt:
[4d51835]3669 // empty
[58dd019]3670 { $$ = nullptr; }
[4d51835]3671 | '=' assignment_expression
3672 { $$ = $2; }
3673 ;
[51b73452]3674
3675%%
[a1c9ddd]3676
[c11e31c]3677// ----end of grammar----
[51b73452]3678
[c11e31c]3679// Local Variables: //
[b87a5ed]3680// mode: c++ //
[de62360d]3681// tab-width: 4 //
[c11e31c]3682// compile-command: "make install" //
3683// End: //
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