source: src/Parser/parser.yy@ 8dcb832

ADT ast-experimental enum forall-pointer-decay pthread-emulation qualifiedEnum
Last change on this file since 8dcb832 was e16eb460, checked in by Peter A. Buhr <pabuhr@…>, 4 years ago

further restrict locations where @ occurs, remove empty argument list for mutex statement, add mutex @ has placeholder for mutex expression

  • Property mode set to 100644
File size: 145.9 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
[e16eb460]12// Last Modified On : Sat Oct 2 08:27:21 2021
13// Update Count : 5080
[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,
71 // i.e., u"a" U"b" L"c" is disallowed.
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;
[f271bdd]240 IfCtrl * ifctl;
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
[936e9f4]329%type<ifctl> if_control_expression
[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
[8b47e50]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 { $$ = new StatementNode( build_expr( $1 ) ); }
[e16eb460]1093 | MUTEX '@' comma_expression ';'
1094 // { $$ = new StatementNode( build_mutex( nullptr, new StatementNode( build_expr( $3 ) ) ) ); }
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:
1125 IF '(' if_control_expression ')' statement %prec THEN
1126 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1127 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[3d26610]1128 | IF '(' if_control_expression ')' statement ELSE statement
[a025ea8]1129 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1130 ;
1131
[936e9f4]1132if_control_expression:
[35718a9]1133 comma_expression
[f271bdd]1134 { $$ = new IfCtrl( nullptr, $1 ); }
[35718a9]1135 | c_declaration // no semi-colon
[f271bdd]1136 { $$ = new IfCtrl( $1, nullptr ); }
[35718a9]1137 | cfa_declaration // no semi-colon
[f271bdd]1138 { $$ = new IfCtrl( $1, nullptr ); }
[6d49ea3]1139 | declaration comma_expression // semi-colon separated
[f271bdd]1140 { $$ = new IfCtrl( $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 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1191 ;
[b87a5ed]1192
[51b73452]1193iteration_statement:
[401e61f]1194 WHILE '(' push if_control_expression ')' statement pop
[a025ea8]1195 { $$ = new StatementNode( build_while( $4, maybe_build_compound( $6 ) ) ); }
[f271bdd]1196 | WHILE '(' ')' statement // CFA => while ( 1 )
[a025ea8]1197 { $$ = new StatementNode( build_while( new IfCtrl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) ); }
[4d51835]1198 | DO statement WHILE '(' comma_expression ')' ';'
[a025ea8]1199 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
[f271bdd]1200 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[a025ea8]1201 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) ); }
[6d01d89]1202 | FOR '(' push for_control_expression_list ')' statement pop
[a025ea8]1203 { $$ = new StatementNode( build_for( $4, maybe_build_compound( $6 ) ) ); }
[f1aeede]1204 | FOR '(' ')' statement // CFA => for ( ;; )
[a025ea8]1205 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[4d51835]1206 ;
[51b73452]1207
[6d01d89]1208for_control_expression_list:
1209 for_control_expression
1210 | for_control_expression_list ':' for_control_expression
[67d4e37]1211 // ForCtrl + ForCtrl:
1212 // init + init => multiple declaration statements that are hoisted
1213 // condition + condition => (expression) && (expression)
1214 // change + change => (expression), (expression)
1215 {
1216 $1->init->set_last( $3->init );
1217 if ( $1->condition ) {
1218 if ( $3->condition ) {
1219 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1220 } // if
1221 } else $1->condition = $3->condition;
1222 if ( $1->change ) {
1223 if ( $3->change ) {
1224 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1225 } // if
1226 } else $1->change = $3->change;
1227 $$ = $1;
1228 }
[6d01d89]1229 ;
1230
[51b73452]1231for_control_expression:
[6d01d89]1232 ';' comma_expression_opt ';' comma_expression_opt
1233 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1234 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1235 { $$ = new ForCtrl( $1, $3, $5 ); }
1236 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1237 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1238
[6d01d89]1239 | comma_expression // CFA
[f1aeede]1240 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1241 OperKinds::LThan, $1->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1242 | '=' comma_expression // CFA
[9853d9b0]1243 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1244 OperKinds::LEThan, $2->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1245 | comma_expression inclexcl comma_expression // CFA
[ee27df2]1246 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1247 | comma_expression inclexcl comma_expression '~' comma_expression // CFA
[cc22003]1248 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[cbbd8fd7]1249 | comma_expression ';' // CFA
1250 { $$ = forCtrl( new ExpressionNode( build_constantInteger( *new string( "0u" ) ) ), $1, nullptr, OperKinds::LThan, nullptr, nullptr ); }
[f1aeede]1251 | comma_expression ';' comma_expression // CFA
1252 { $$ = forCtrl( $3, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1253 OperKinds::LThan, $3->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1254 | comma_expression ';' '=' comma_expression // CFA
[332bd33]1255 { $$ = forCtrl( $4, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1256 OperKinds::LEThan, $4->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1257 | comma_expression ';' comma_expression inclexcl comma_expression // CFA
[f1aeede]1258 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1259 | comma_expression ';' comma_expression inclexcl comma_expression '~' comma_expression // CFA
[f1aeede]1260 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, $7 ); }
[67d4e37]1261
[ca33b15]1262 | comma_expression ';' TYPEDEFname // CFA, array type
1263 {
1264 SemanticError( yylloc, "Array interator is currently unimplemented." ); $$ = nullptr;
1265 $$ = forCtrl( new ExpressionNode( build_varref( $3 ) ), $1, nullptr, OperKinds::Range, nullptr, nullptr );
1266 }
[98337569]1267
[67d4e37]1268 // There is a S/R conflicit if ~ and -~ are factored out.
1269 | comma_expression ';' comma_expression '~' '@' // CFA
1270 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1271 | comma_expression ';' comma_expression ErangeDown '@' // CFA
1272 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[2d2df9f]1273 | comma_expression ';' comma_expression '~' '@' '~' comma_expression // CFA
1274 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, $7 ); }
[1b54b54]1275 | comma_expression ';' comma_expression ErangeDown '@' '~' comma_expression // CFA
1276 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, $7 ); }
[2d2df9f]1277 | comma_expression ';' comma_expression '~' '@' '~' '@' // CFA
1278 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, nullptr ); }
[d1625f8]1279 ;
[51b73452]1280
[cc22003]1281inclexcl:
1282 '~'
1283 { $$ = OperKinds::LThan; }
[d69f4bb4]1284 | ErangeUpEq
[cc22003]1285 { $$ = OperKinds::LEThan; }
[d69f4bb4]1286 | ErangeDown
1287 { $$ = OperKinds::GThan; }
1288 | ErangeDownEq
1289 { $$ = OperKinds::GEThan; }
[cc22003]1290 ;
1291
[51b73452]1292jump_statement:
[44a81853]1293 GOTO identifier_or_type_name ';'
[ab57786]1294 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1295 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1296 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1297 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1298 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1299 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
[ec3f9c8]1300 | fall_through_name ';' // CFA
[6a276a0]1301 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
[ec3f9c8]1302 | fall_through_name identifier_or_type_name ';' // CFA
[6a276a0]1303 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1304 | fall_through_name DEFAULT ';' // CFA
1305 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1306 | CONTINUE ';'
[de62360d]1307 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1308 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1309 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1310 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1311 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1312 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1313 | BREAK ';'
[de62360d]1314 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1315 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1316 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1317 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1318 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1319 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1320 | RETURN comma_expression_opt ';'
[e82aa9df]1321 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1322 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1323 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1324 | SUSPEND ';'
[427854b]1325 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1326 | SUSPEND compound_statement
[427854b]1327 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1328 | SUSPEND COROUTINE ';'
[427854b]1329 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1330 | SUSPEND COROUTINE compound_statement
[427854b]1331 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1332 | SUSPEND GENERATOR ';'
[427854b]1333 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1334 | SUSPEND GENERATOR compound_statement
[427854b]1335 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1336 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1337 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1338 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1339 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1340 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1341 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1342 ;
[51b73452]1343
[6a276a0]1344fall_through_name: // CFA
1345 FALLTHRU
1346 | FALLTHROUGH
1347 ;
1348
[8b47e50]1349with_statement:
[5b2edbc]1350 WITH '(' tuple_expression_list ')' statement
[e16eb460]1351 { $$ = new StatementNode( build_with( $3, $5 ) ); }
[5b2edbc]1352 ;
1353
[b6b3c42]1354// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1355mutex_statement:
[e16eb460]1356 MUTEX '(' argument_expression_list ')' statement
[6cebfef]1357 { $$ = new StatementNode( build_mutex( $3, $5 ) ); }
[b6b3c42]1358 ;
1359
[51d6d6a]1360when_clause:
[6a276a0]1361 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1362 ;
1363
[5b2edbc]1364when_clause_opt:
1365 // empty
[135b431]1366 { $$ = nullptr; }
[51d6d6a]1367 | when_clause
[5b2edbc]1368 ;
1369
1370waitfor:
[713926ca]1371 WAITFOR '(' cast_expression ')'
1372 { $$ = $3; }
[cbbd8fd7]1373// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1374// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1375 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1376 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1377 ;
1378
1379cast_expression_list:
1380 cast_expression
1381 | cast_expression_list ',' cast_expression
[a491a3c]1382 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1383 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1384 ;
1385
1386timeout:
[6a276a0]1387 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1388 ;
1389
1390waitfor_clause:
[51d6d6a]1391 when_clause_opt waitfor statement %prec THEN
[a025ea8]1392 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1393 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1394 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1395 | when_clause_opt timeout statement %prec THEN
[a025ea8]1396 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1397 | when_clause_opt ELSE statement
[a025ea8]1398 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[51d6d6a]1399 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
[713926ca]1400 | when_clause_opt timeout statement WOR ELSE statement
1401 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1402 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1403 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1404 ;
1405
1406waitfor_statement:
[51d6d6a]1407 when_clause_opt waitfor statement %prec THEN
[135b431]1408 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1409 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1410 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1411 ;
1412
[51b73452]1413exception_statement:
[9fb1367]1414 TRY compound_statement handler_clause %prec THEN
[e82aa9df]1415 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1416 | TRY compound_statement finally_clause
[e82aa9df]1417 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1418 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1419 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1420 ;
[51b73452]1421
1422handler_clause:
[098f7ff]1423 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1424 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1425 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1426 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1427 ;
1428
1429handler_predicate_opt:
[7fdb94e1]1430 // empty
[cbce272]1431 { $$ = nullptr; }
[6a276a0]1432 | ';' conditional_expression { $$ = $2; }
[307a732]1433 ;
1434
1435handler_key:
[6a276a0]1436 CATCH { $$ = CatchStmt::Terminate; }
[9fb1367]1437 | RECOVER { $$ = CatchStmt::Terminate; }
[6a276a0]1438 | CATCHRESUME { $$ = CatchStmt::Resume; }
[9fb1367]1439 | FIXUP { $$ = CatchStmt::Resume; }
[4d51835]1440 ;
[51b73452]1441
1442finally_clause:
[6a276a0]1443 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1444 ;
[51b73452]1445
1446exception_declaration:
[d0ffed1]1447 // No SUE declaration in parameter list.
1448 type_specifier_nobody
1449 | type_specifier_nobody declarator
[c0a33d2]1450 { $$ = $2->addType( $1 ); }
[d0ffed1]1451 | type_specifier_nobody variable_abstract_declarator
[4d51835]1452 { $$ = $2->addType( $1 ); }
[033ff37]1453 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1454 { $$ = $1->addName( $2 ); }
[c0aa336]1455 | cfa_abstract_declarator_tuple // CFA
[4d51835]1456 ;
[51b73452]1457
[2a8427c6]1458enable_disable_statement:
1459 enable_disable_key identifier_list compound_statement
1460 ;
1461
1462enable_disable_key:
1463 ENABLE
1464 | DISABLE
1465 ;
1466
[51b73452]1467asm_statement:
[ab57786]1468 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1469 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1470 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1471 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1472 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1473 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1474 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1475 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1476 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1477 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1478 ;
1479
1480asm_volatile_opt: // GCC
1481 // empty
1482 { $$ = false; }
1483 | VOLATILE
1484 { $$ = true; }
[4d51835]1485 ;
[b87a5ed]1486
1487asm_operands_opt: // GCC
[4d51835]1488 // empty
[58dd019]1489 { $$ = nullptr; } // use default argument
[4d51835]1490 | asm_operands_list
1491 ;
[b87a5ed]1492
1493asm_operands_list: // GCC
[4d51835]1494 asm_operand
1495 | asm_operands_list ',' asm_operand
[4a063df]1496 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1497 ;
[b87a5ed]1498
1499asm_operand: // GCC
[ab57786]1500 string_literal '(' constant_expression ')'
[408ab79]1501 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1502 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1503 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1504 ;
1505
[4e06c1e]1506asm_clobbers_list_opt: // GCC
[7f5566b]1507 // empty
[58dd019]1508 { $$ = nullptr; } // use default argument
[ab57786]1509 | string_literal
[d1625f8]1510 { $$ = new ExpressionNode( $1 ); }
[ab57786]1511 | asm_clobbers_list_opt ',' string_literal
[4a063df]1512 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1513 ;
[b87a5ed]1514
[7f5566b]1515label_list:
[033ff37]1516 identifier
[ab57786]1517 {
1518 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1519 delete $1; // allocated by lexer
1520 }
[033ff37]1521 | label_list ',' identifier
[ab57786]1522 {
1523 $$ = $1; $1->labels.push_back( *$3 );
1524 delete $3; // allocated by lexer
1525 }
[4d51835]1526 ;
[51b73452]1527
[c11e31c]1528//******************************* DECLARATIONS *********************************
[51b73452]1529
[b87a5ed]1530declaration_list_opt: // used at beginning of switch statement
[35718a9]1531 // empty
[58dd019]1532 { $$ = nullptr; }
[4d51835]1533 | declaration_list
1534 ;
[51b73452]1535
1536declaration_list:
[4d51835]1537 declaration
[35718a9]1538 | declaration_list declaration
1539 { $$ = $1->appendList( $2 ); }
[4d51835]1540 ;
[51b73452]1541
[407bde5]1542KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1543 // empty
[58dd019]1544 { $$ = nullptr; }
[35718a9]1545 | KR_parameter_list
[4d51835]1546 ;
[51b73452]1547
[35718a9]1548KR_parameter_list:
[4cc585b]1549 push c_declaration pop ';'
1550 { $$ = $2; }
[35718a9]1551 | KR_parameter_list push c_declaration pop ';'
[4d51835]1552 { $$ = $1->appendList( $3 ); }
1553 ;
[b87a5ed]1554
[51b1202]1555local_label_declaration_opt: // GCC, local label
[4d51835]1556 // empty
[51b1202]1557 | local_label_declaration_list
[4d51835]1558 ;
[b87a5ed]1559
[51b1202]1560local_label_declaration_list: // GCC, local label
1561 LABEL local_label_list ';'
1562 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1563 ;
[b87a5ed]1564
[51b1202]1565local_label_list: // GCC, local label
[033ff37]1566 identifier_or_type_name
1567 | local_label_list ',' identifier_or_type_name
[4d51835]1568 ;
[b87a5ed]1569
[936e9f4]1570declaration: // old & new style declarations
[35718a9]1571 c_declaration ';'
1572 | cfa_declaration ';' // CFA
[b47b827]1573 | static_assert // C11
[4d51835]1574 ;
[b87a5ed]1575
[b9be000b]1576static_assert:
1577 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1578 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1579 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1580 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1581
[de62360d]1582// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1583// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1584// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1585// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1586// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1587// block, but cannot be mixed within a specific declaration.
[c11e31c]1588//
[b87a5ed]1589// CFA C
1590// [10] int x; int x[10]; // array of 10 integers
1591// [10] * char y; char *y[10]; // array of 10 pointers to char
1592
[c0aa336]1593cfa_declaration: // CFA
[4cc585b]1594 cfa_variable_declaration
1595 | cfa_typedef_declaration
1596 | cfa_function_declaration
1597 | type_declaring_list
[2501ae5]1598 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1599 | trait_specifier
[4d51835]1600 ;
[b87a5ed]1601
[c0aa336]1602cfa_variable_declaration: // CFA
1603 cfa_variable_specifier initializer_opt
[7fdb94e1]1604 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1605 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1606 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1607 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1608 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1609 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1610 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1611 ;
[b87a5ed]1612
[c0aa336]1613cfa_variable_specifier: // CFA
[de62360d]1614 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1615 // storage-class
[c0aa336]1616 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1617 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1618 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1619 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1620 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1621 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1622 ;
[b87a5ed]1623
[c0aa336]1624cfa_function_declaration: // CFA
1625 cfa_function_specifier
1626 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1627 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1628 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1629 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1630 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1631 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1632 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1633 {
[481115f]1634 // Append the return type at the start (left-hand-side) to each identifier in the list.
1635 DeclarationNode * ret = new DeclarationNode;
1636 ret->type = maybeClone( $1->type->base );
[40de461]1637 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1638 }
1639 ;
[b87a5ed]1640
[c0aa336]1641cfa_function_specifier: // CFA
[40de461]1642// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1643// {
1644// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1645// }
[40de461]1646// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1647// {
1648// typedefTable.setNextIdentifier( *$5 );
1649// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1650// }
[40de461]1651// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1652// {
1653// typedefTable.setNextIdentifier( *$5 );
1654// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1655// }
1656// | '[' ']' typegen_name
1657 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1658 //
[40de461]1659 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1660 // '[' ']' type_specifier
1661 //
[2871210]1662 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1663 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1664 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1665 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1666 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1667 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1668 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1669 ;
[b87a5ed]1670
[c0aa336]1671cfa_function_return: // CFA
[c0a33d2]1672 '[' push cfa_parameter_list pop ']'
1673 { $$ = DeclarationNode::newTuple( $3 ); }
1674 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1675 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1676 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1677 ;
[b87a5ed]1678
[c0aa336]1679cfa_typedef_declaration: // CFA
1680 TYPEDEF cfa_variable_specifier
[4d51835]1681 {
[ecae5860]1682 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1683 $$ = $2->addTypedef();
1684 }
[c0aa336]1685 | TYPEDEF cfa_function_specifier
[4d51835]1686 {
[ecae5860]1687 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1688 $$ = $2->addTypedef();
1689 }
[033ff37]1690 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1691 {
[ecae5860]1692 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1693 $$ = $1->appendList( $1->cloneType( $5 ) );
1694 }
1695 ;
[b87a5ed]1696
[de62360d]1697// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1698// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1699
1700typedef_declaration:
[4d51835]1701 TYPEDEF type_specifier declarator
1702 {
[ecae5860]1703 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1704 $$ = $3->addType( $2 )->addTypedef();
1705 }
1706 | typedef_declaration pop ',' push declarator
1707 {
[ecae5860]1708 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1709 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1710 }
[de62360d]1711 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1712 {
[ecae5860]1713 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1714 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1715 }
1716 | type_specifier TYPEDEF declarator
1717 {
[ecae5860]1718 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1719 $$ = $3->addType( $1 )->addTypedef();
1720 }
1721 | type_specifier TYPEDEF type_qualifier_list declarator
1722 {
[ecae5860]1723 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1724 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1725 }
1726 ;
[b87a5ed]1727
[721f17a]1728typedef_expression:
[25744d2]1729 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1730 TYPEDEF identifier '=' assignment_expression
[4d51835]1731 {
[25744d2]1732 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1733 }
[033ff37]1734 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1735 {
[25744d2]1736 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1737 }
1738 ;
[51b73452]1739
[c0aa336]1740c_declaration:
[4cc585b]1741 declaration_specifier declaring_list
[7fdb94e1]1742 { $$ = distAttr( $1, $2 ); }
[4cc585b]1743 | typedef_declaration
[25744d2]1744 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1745 | sue_declaration_specifier
[4d51835]1746 ;
[51b73452]1747
1748declaring_list:
[de62360d]1749 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1750 // storage-class
[c0aa336]1751 declarator asm_name_opt initializer_opt
[7fdb94e1]1752 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1753 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1754 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1755 ;
[b87a5ed]1756
1757declaration_specifier: // type specifier + storage class
[4d51835]1758 basic_declaration_specifier
1759 | sue_declaration_specifier
[84d58c5]1760 | type_declaration_specifier
[4d51835]1761 ;
[b87a5ed]1762
[d0ffed1]1763declaration_specifier_nobody: // type specifier + storage class - {...}
1764 // Preclude SUE declarations in restricted scopes:
1765 //
1766 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1767 //
1768 // because it is impossible to call f due to name equivalence.
1769 basic_declaration_specifier
1770 | sue_declaration_specifier_nobody
[84d58c5]1771 | type_declaration_specifier
[d0ffed1]1772 ;
1773
1774type_specifier: // type specifier
[4d51835]1775 basic_type_specifier
1776 | sue_type_specifier
[84d58c5]1777 | type_type_specifier
[4d51835]1778 ;
[b87a5ed]1779
[d0ffed1]1780type_specifier_nobody: // type specifier - {...}
1781 // Preclude SUE declarations in restricted scopes:
1782 //
1783 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1784 //
1785 // because it is impossible to call f due to name equivalence.
1786 basic_type_specifier
1787 | sue_type_specifier_nobody
[84d58c5]1788 | type_type_specifier
[d0ffed1]1789 ;
1790
[b87a5ed]1791type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1792 // empty
[58dd019]1793 { $$ = nullptr; }
[4d51835]1794 | type_qualifier_list
1795 ;
[51b73452]1796
1797type_qualifier_list:
[de62360d]1798 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1799 //
[de62360d]1800 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1801 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1802 // appeared only once.
[4d51835]1803 type_qualifier
1804 | type_qualifier_list type_qualifier
1805 { $$ = $1->addQualifiers( $2 ); }
1806 ;
[51b73452]1807
1808type_qualifier:
[4d51835]1809 type_qualifier_name
[5e25953]1810 | attribute // trick handles most atrribute locations
[4d51835]1811 ;
[51b73452]1812
1813type_qualifier_name:
[4d51835]1814 CONST
[738e304]1815 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1816 | RESTRICT
[738e304]1817 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1818 | VOLATILE
[738e304]1819 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1820 | ATOMIC
[738e304]1821 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1822 | forall
1823 ;
1824
1825forall:
[35718a9]1826 FORALL '(' type_parameter_list ')' // CFA
1827 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1828 ;
[51b73452]1829
1830declaration_qualifier_list:
[4d51835]1831 storage_class_list
[de62360d]1832 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1833 { $$ = $1->addQualifiers( $2 ); }
1834 | declaration_qualifier_list type_qualifier_list storage_class_list
1835 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1836 ;
[51b73452]1837
1838storage_class_list:
[de62360d]1839 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1840 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1841 //
[de62360d]1842 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1843 // specifiers in a declaration.
[4d51835]1844 storage_class
1845 | storage_class_list storage_class
1846 { $$ = $1->addQualifiers( $2 ); }
1847 ;
[51b73452]1848
1849storage_class:
[4d51835]1850 EXTERN
[68fe077a]1851 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1852 | STATIC
[68fe077a]1853 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1854 | AUTO
[68fe077a]1855 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1856 | REGISTER
[68fe077a]1857 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1858 | THREADLOCAL // C11
[68fe077a]1859 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1860 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1861 | INLINE // C99
[ddfd945]1862 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1863 | FORTRAN // C99
[ddfd945]1864 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1865 | NORETURN // C11
[ddfd945]1866 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1867 ;
[51b73452]1868
1869basic_type_name:
[201aeb9]1870 VOID
[4d51835]1871 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1872 | BOOL // C99
1873 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1874 | CHAR
1875 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1876 | INT
1877 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1878 | INT128
1879 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1880 | UINT128
1881 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1882 | FLOAT
1883 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1884 | DOUBLE
1885 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1886 | uuFLOAT80
1887 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1888 | uuFLOAT128
1889 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1890 | uFLOAT16
1891 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1892 | uFLOAT32
1893 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1894 | uFLOAT32X
1895 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1896 | uFLOAT64
1897 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1898 | uFLOAT64X
1899 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1900 | uFLOAT128
1901 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[15f769c]1902 | DECIMAL32
1903 { SemanticError( yylloc, "_Decimal32 is currently unimplemented." ); $$ = nullptr; }
1904 | DECIMAL64
1905 { SemanticError( yylloc, "_Decimal64 is currently unimplemented." ); $$ = nullptr; }
1906 | DECIMAL128
1907 { SemanticError( yylloc, "_Decimal128 is currently unimplemented." ); $$ = nullptr; }
[4d51835]1908 | COMPLEX // C99
[5b639ee]1909 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1910 | IMAGINARY // C99
[5b639ee]1911 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1912 | SIGNED
1913 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1914 | UNSIGNED
1915 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1916 | SHORT
1917 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1918 | LONG
1919 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1920 | VALIST // GCC, __builtin_va_list
1921 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1922 | AUTO_TYPE
1923 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[1f652a7]1924 | vtable
1925 ;
1926
1927vtable_opt:
1928 // empty
1929 { $$ = nullptr; }
[9380add]1930 | vtable
[1f652a7]1931 ;
1932
1933vtable:
[8f6f3729]1934 VTABLE '(' type_name ')' default_opt
[93bbbc4]1935 { $$ = DeclarationNode::newVtableType( $3 ); }
1936 // { SemanticError( yylloc, "vtable is currently unimplemented." ); $$ = nullptr; }
[1f652a7]1937 ;
1938
1939default_opt:
1940 // empty
1941 { $$ = nullptr; }
1942 | DEFAULT
1943 { SemanticError( yylloc, "vtable default is currently unimplemented." ); $$ = nullptr; }
[4d51835]1944 ;
[51b73452]1945
1946basic_declaration_specifier:
[4d51835]1947 // A semantic check is necessary for conflicting storage classes.
1948 basic_type_specifier
1949 | declaration_qualifier_list basic_type_specifier
1950 { $$ = $2->addQualifiers( $1 ); }
1951 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1952 { $$ = $1->addQualifiers( $2 ); }
1953 | basic_declaration_specifier storage_class type_qualifier_list
1954 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1955 | basic_declaration_specifier storage_class basic_type_specifier
1956 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1957 ;
[51b73452]1958
1959basic_type_specifier:
[84d58c5]1960 direct_type
[f38e7d7]1961 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1962 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1963 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1964 ;
[51b73452]1965
[84d58c5]1966direct_type:
[4d51835]1967 basic_type_name
1968 | type_qualifier_list basic_type_name
1969 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1970 | direct_type type_qualifier
[4d51835]1971 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1972 | direct_type basic_type_name
[4d51835]1973 { $$ = $1->addType( $2 ); }
1974 ;
[51b73452]1975
[84d58c5]1976indirect_type:
[b6ad601]1977 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]1978 { $$ = $3; }
[b6ad601]1979 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]1980 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]1981 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
1982 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
1983 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
1984 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]1985 | ZERO_T // CFA
1986 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1987 | ONE_T // CFA
1988 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1989 ;
[51b73452]1990
[d0ffed1]1991sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1992 sue_type_specifier
1993 | declaration_qualifier_list sue_type_specifier
1994 { $$ = $2->addQualifiers( $1 ); }
1995 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1996 { $$ = $1->addQualifiers( $2 ); }
1997 | sue_declaration_specifier storage_class type_qualifier_list
1998 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1999 ;
[51b73452]2000
[d0ffed1]2001sue_type_specifier: // struct, union, enum + type specifier
2002 elaborated_type
[fdca7c6]2003 | type_qualifier_list
2004 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
2005 elaborated_type
2006 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2007 | sue_type_specifier type_qualifier
[284da8c]2008 {
2009 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
2010 $$ = $1->addQualifiers( $2 );
2011 }
[4d51835]2012 ;
[51b73452]2013
[d0ffed1]2014sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
2015 sue_type_specifier_nobody
2016 | declaration_qualifier_list sue_type_specifier_nobody
2017 { $$ = $2->addQualifiers( $1 ); }
2018 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
2019 { $$ = $1->addQualifiers( $2 ); }
2020 | sue_declaration_specifier_nobody storage_class type_qualifier_list
2021 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2022 ;
2023
2024sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
2025 elaborated_type_nobody
2026 | type_qualifier_list elaborated_type_nobody
2027 { $$ = $2->addQualifiers( $1 ); }
2028 | sue_type_specifier_nobody type_qualifier
2029 { $$ = $1->addQualifiers( $2 ); }
2030 ;
2031
[84d58c5]2032type_declaration_specifier:
2033 type_type_specifier
2034 | declaration_qualifier_list type_type_specifier
[4d51835]2035 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]2036 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]2037 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]2038 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]2039 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2040 ;
[b87a5ed]2041
[84d58c5]2042type_type_specifier: // typedef types
2043 type_name
2044 | type_qualifier_list type_name
2045 { $$ = $2->addQualifiers( $1 ); }
2046 | type_type_specifier type_qualifier
2047 { $$ = $1->addQualifiers( $2 ); }
2048 ;
2049
2050type_name:
[4d51835]2051 TYPEDEFname
2052 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]2053 | '.' TYPEDEFname
[47498bd]2054 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]2055 | type_name '.' TYPEDEFname
[c5d7701]2056 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]2057 | typegen_name
2058 | '.' typegen_name
[47498bd]2059 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]2060 | type_name '.' typegen_name
[c5d7701]2061 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]2062 ;
2063
2064typegen_name: // CFA
[65d6de4]2065 TYPEGENname
2066 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2067 | TYPEGENname '(' ')'
[67cf18c]2068 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2069 | TYPEGENname '(' type_list ')'
[84d58c5]2070 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2071 ;
[51b73452]2072
[d0ffed1]2073elaborated_type: // struct, union, enum
[c0aa336]2074 aggregate_type
2075 | enum_type
[4d51835]2076 ;
[51b73452]2077
[d0ffed1]2078elaborated_type_nobody: // struct, union, enum - {...}
2079 aggregate_type_nobody
2080 | enum_type_nobody
2081 ;
2082
2083aggregate_type: // struct, union
[fc20514]2084 aggregate_key attribute_list_opt
2085 { forall = false; } // reset
2086 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2087 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[73f04fd]2088 | aggregate_key attribute_list_opt identifier
[fdca7c6]2089 {
[26ef3b2]2090 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2091 forall = false; // reset
2092 }
[284da8c]2093 '{' field_declaration_list_opt '}' type_parameters_opt
[73f04fd]2094 { $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 ); }
[f9c3100]2095 | aggregate_key attribute_list_opt TYPEDEFname // unqualified type name
[407bde5]2096 {
[f9c3100]2097 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2098 forall = false; // reset
2099 }
[284da8c]2100 '{' field_declaration_list_opt '}' type_parameters_opt
[f9c3100]2101 {
2102 DeclarationNode::newFromTypedef( $3 );
2103 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2104 }
2105 | aggregate_key attribute_list_opt TYPEGENname // unqualified type name
2106 {
2107 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
2108 forall = false; // reset
2109 }
2110 '{' field_declaration_list_opt '}' type_parameters_opt
2111 {
2112 DeclarationNode::newFromTypeGen( $3, nullptr );
2113 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2114 }
[d0ffed1]2115 | aggregate_type_nobody
2116 ;
2117
[284da8c]2118type_parameters_opt:
2119 // empty
2120 { $$ = nullptr; } %prec '}'
2121 | '(' type_list ')'
2122 { $$ = $2; }
2123 ;
2124
[d0ffed1]2125aggregate_type_nobody: // struct, union - {...}
[73f04fd]2126 aggregate_key attribute_list_opt identifier
[84d58c5]2127 {
[26ef3b2]2128 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2129 forall = false; // reset
[84d58c5]2130 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2131 }
[73f04fd]2132 | aggregate_key attribute_list_opt type_name
[65d6de4]2133 {
[fc20514]2134 forall = false; // reset
[65d6de4]2135 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2136 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2137 // delete newFromTypeGen.
2138 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2139 $3->type->symbolic.name = nullptr;
2140 $3->type->symbolic.actuals = nullptr;
2141 delete $3;
2142 }
[4d51835]2143 ;
[51b73452]2144
2145aggregate_key:
[e307e12]2146 aggregate_data
2147 | aggregate_control
2148 ;
2149
2150aggregate_data:
[1f652a7]2151 STRUCT vtable_opt
[24711a3]2152 { $$ = AggregateDecl::Struct; }
[c0aa336]2153 | UNION
[24711a3]2154 { $$ = AggregateDecl::Union; }
[e307e12]2155 | EXCEPTION // CFA
[24711a3]2156 { $$ = AggregateDecl::Exception; }
[1f652a7]2157 // { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2158 ;
2159
2160aggregate_control: // CFA
[cbbd8fd7]2161 MONITOR
[24711a3]2162 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2163 | MUTEX STRUCT
[24711a3]2164 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2165 | GENERATOR
[24711a3]2166 { $$ = AggregateDecl::Generator; }
[cbbd8fd7]2167 | MUTEX GENERATOR
[aeb5d0d]2168 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2169 | COROUTINE
[24711a3]2170 { $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2171 | MUTEX COROUTINE
[aeb5d0d]2172 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2173 | THREAD
[24711a3]2174 { $$ = AggregateDecl::Thread; }
[cbbd8fd7]2175 | MUTEX THREAD
[aeb5d0d]2176 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2177 ;
[51b73452]2178
[7fdb94e1]2179field_declaration_list_opt:
[5d125e4]2180 // empty
[58dd019]2181 { $$ = nullptr; }
[7fdb94e1]2182 | field_declaration_list_opt field_declaration
[a7741435]2183 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2184 ;
[51b73452]2185
2186field_declaration:
[679e644]2187 type_specifier field_declaring_list_opt ';'
[f7e4db27]2188 { $$ = fieldDecl( $1, $2 ); }
[679e644]2189 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2190 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2191 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2192 {
[dea36ee]2193 if ( ! $3 ) { // field declarator ?
2194 $3 = DeclarationNode::newName( nullptr );
2195 } // if
[679a260]2196 $3->inLine = true;
[679e644]2197 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2198 distInl( $3 );
[8f91c9ae]2199 }
[e307e12]2200 | INLINE aggregate_control ';' // CFA
2201 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2202 | typedef_declaration ';' // CFA
2203 | cfa_field_declaring_list ';' // CFA, new style field declaration
2204 | EXTENSION cfa_field_declaring_list ';' // GCC
2205 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2206 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2207 { $$ = $2; } // mark all fields in list
[46fa473]2208 | cfa_typedef_declaration ';' // CFA
[b47b827]2209 | static_assert // C11
[4d51835]2210 ;
[b87a5ed]2211
[679e644]2212field_declaring_list_opt:
2213 // empty
2214 { $$ = nullptr; }
2215 | field_declarator
2216 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2217 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2218 ;
[51b73452]2219
[679e644]2220field_declarator:
[e07caa2]2221 bit_subrange_size // C special case, no field name
[4d51835]2222 { $$ = DeclarationNode::newBitfield( $1 ); }
2223 | variable_declarator bit_subrange_size_opt
[679e644]2224 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2225 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2226 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2227 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2228 { $$ = $1->addBitfield( $2 ); }
[679e644]2229 ;
2230
[e07caa2]2231field_abstract_list_opt:
2232 // empty
[dea36ee]2233 { $$ = nullptr; }
[e07caa2]2234 | field_abstract
2235 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2236 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2237 ;
2238
[e07caa2]2239field_abstract:
[f7e4db27]2240 // no bit fields
[e07caa2]2241 variable_abstract_declarator
[679e644]2242 ;
2243
2244cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2245 // bit-fields are handled by C declarations
[033ff37]2246 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2247 { $$ = $1->addName( $2 ); }
[033ff37]2248 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2249 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2250 ;
2251
2252cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2253 // bit-fields are handled by C declarations
[679e644]2254 cfa_abstract_declarator_tuple
2255 | cfa_field_abstract_list ','
2256 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2257 ;
[51b73452]2258
2259bit_subrange_size_opt:
[4d51835]2260 // empty
[58dd019]2261 { $$ = nullptr; }
[4d51835]2262 | bit_subrange_size
2263 ;
[51b73452]2264
2265bit_subrange_size:
[c786e1d]2266 ':' assignment_expression
[4d51835]2267 { $$ = $2; }
2268 ;
[51b73452]2269
[d0ffed1]2270enum_type: // enum
[f9c3100]2271 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2272 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[f9c3100]2273 | ENUM attribute_list_opt identifier
[d0ffed1]2274 { typedefTable.makeTypedef( *$3 ); }
2275 '{' enumerator_list comma_opt '}'
2276 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[f9c3100]2277 | ENUM attribute_list_opt typedef_name // unqualified type name
[407bde5]2278 '{' enumerator_list comma_opt '}'
[408ab79]2279 { $$ = DeclarationNode::newEnum( $3->name, $5, true )->addQualifiers( $2 ); }
[f9c3100]2280 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2281 {
[98337569]2282 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]2283 SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr;
2284 }
2285 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt identifier attribute_list_opt
2286 {
[98337569]2287 if ( $3->storageClasses.val != 0 || $3->type->qualifiers.val != 0 ) { SemanticError( yylloc, "storage-class and CV qualifiers are not meaningful for enumeration constants, which are const." ); }
[8bea701]2288 typedefTable.makeTypedef( *$6 );
2289 }
2290 '{' enumerator_list comma_opt '}'
2291 {
2292 SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr;
2293 }
[f9c3100]2294 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt typedef_name attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2295 {
[98337569]2296 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]2297 typedefTable.makeTypedef( *$6->name );
2298 SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr;
2299 }
[d0ffed1]2300 | enum_type_nobody
2301 ;
2302
2303enum_type_nobody: // enum - {...}
[f9c3100]2304 ENUM attribute_list_opt identifier
2305 { typedefTable.makeTypedef( *$3 ); $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 ); }
2306 | ENUM attribute_list_opt type_name // qualified type name
2307 { typedefTable.makeTypedef( *$3->type->symbolic.name ); $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 ); }
[4d51835]2308 ;
[51b73452]2309
2310enumerator_list:
[033ff37]2311 identifier_or_type_name enumerator_value_opt
[4d51835]2312 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[f9c3100]2313 | INLINE type_name
2314 { $$ = DeclarationNode::newEnumConstant( new string("inline"), nullptr ); }
[033ff37]2315 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[4d51835]2316 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
[f9c3100]2317 | enumerator_list ',' INLINE type_name enumerator_value_opt
2318 { $$ = $1->appendList( DeclarationNode::newEnumConstant( new string("inline"), nullptr ) ); }
[4d51835]2319 ;
[51b73452]2320
2321enumerator_value_opt:
[4d51835]2322 // empty
[58dd019]2323 { $$ = nullptr; }
[408ab79]2324 // | '=' constant_expression
2325 // { $$ = $2; }
[f9c3100]2326 | simple_assignment_operator initializer
[408ab79]2327 { $$ = $2->get_expression(); } // FIX ME: enum only deals with constant_expression
[4d51835]2328 ;
[51b73452]2329
[5a51798]2330cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2331 // empty
[2a8427c6]2332 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2333 | ELLIPSIS
[58dd019]2334 { $$ = nullptr; }
[2a8427c6]2335 | cfa_abstract_parameter_list
[c0aa336]2336 | cfa_parameter_list
[c0a33d2]2337 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2338 { $$ = $1->appendList( $5 ); }
2339 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2340 { $$ = $1->addVarArgs(); }
[c0a33d2]2341 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2342 { $$ = $1->addVarArgs(); }
2343 ;
[b87a5ed]2344
[c0aa336]2345cfa_parameter_list: // CFA
2346 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2347 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2348 cfa_parameter_declaration
[c0a33d2]2349 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2350 { $$ = $1->appendList( $5 ); }
2351 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2352 { $$ = $1->appendList( $5 ); }
2353 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2354 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2355 ;
[b87a5ed]2356
[c0aa336]2357cfa_abstract_parameter_list: // CFA, new & old style abstract
2358 cfa_abstract_parameter_declaration
[c0a33d2]2359 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2360 { $$ = $1->appendList( $5 ); }
[4d51835]2361 ;
[51b73452]2362
2363parameter_type_list_opt:
[4d51835]2364 // empty
[58dd019]2365 { $$ = nullptr; }
[2a8427c6]2366 | ELLIPSIS
2367 { $$ = nullptr; }
2368 | parameter_list
[4d51835]2369 | parameter_list pop ',' push ELLIPSIS
2370 { $$ = $1->addVarArgs(); }
2371 ;
[b87a5ed]2372
2373parameter_list: // abstract + real
[4d51835]2374 abstract_parameter_declaration
2375 | parameter_declaration
2376 | parameter_list pop ',' push abstract_parameter_declaration
2377 { $$ = $1->appendList( $5 ); }
2378 | parameter_list pop ',' push parameter_declaration
2379 { $$ = $1->appendList( $5 ); }
2380 ;
[51b73452]2381
[de62360d]2382// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2383// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2384
[c0aa336]2385cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2386 parameter_declaration
[5a51798]2387 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2388 { $$ = $1->addName( $2 ); }
[5a51798]2389 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2390 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2391 { $$ = $1->addName( $2 ); }
[5a51798]2392 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2393 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2394 | cfa_function_specifier
[4d51835]2395 ;
[b87a5ed]2396
[c0aa336]2397cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2398 abstract_parameter_declaration
[c0aa336]2399 | cfa_identifier_parameter_declarator_no_tuple
2400 | cfa_abstract_tuple
2401 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2402 | type_qualifier_list cfa_abstract_tuple
[4d51835]2403 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2404 | cfa_abstract_function
[4d51835]2405 ;
[51b73452]2406
2407parameter_declaration:
[d0ffed1]2408 // No SUE declaration in parameter list.
[5a51798]2409 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2410 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2411 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2412 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2413 ;
[51b73452]2414
2415abstract_parameter_declaration:
[5a51798]2416 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2417 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2418 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2419 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2420 ;
[51b73452]2421
[c11e31c]2422// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2423// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2424// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2425
[b87a5ed]2426identifier_list: // K&R-style parameter list => no types
[033ff37]2427 identifier
[4d51835]2428 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2429 | identifier_list ',' identifier
[4d51835]2430 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2431 ;
[51b73452]2432
[2871210]2433identifier_or_type_name:
[4d51835]2434 identifier
2435 | TYPEDEFname
2436 | TYPEGENname
2437 ;
[51b73452]2438
[84d58c5]2439type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2440 cfa_abstract_declarator_tuple // CFA
[4d51835]2441 | type_specifier
[c0aa336]2442 | type_specifier abstract_declarator
[4d51835]2443 { $$ = $2->addType( $1 ); }
2444 ;
[b87a5ed]2445
[84d58c5]2446type: // typeof, assertion
2447 type_no_function
[c0aa336]2448 | cfa_abstract_function // CFA
[4d51835]2449 ;
[51b73452]2450
2451initializer_opt:
[4d51835]2452 // empty
[58dd019]2453 { $$ = nullptr; }
[f9c3100]2454 | simple_assignment_operator initializer { $$ = $1 == OperKinds::Assign ? $2 : $2->set_maybeConstructed( false ); }
2455 | '=' VOID { $$ = new InitializerNode( true ); }
[63b3279e]2456 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2457 ;
[51b73452]2458
2459initializer:
[de62360d]2460 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2461 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2462 ;
[51b73452]2463
[7fdb94e1]2464initializer_list_opt:
[097e2b0]2465 // empty
[58dd019]2466 { $$ = nullptr; }
[097e2b0]2467 | initializer
[4d51835]2468 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2469 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
[63b3279e]2470 | initializer_list_opt ',' designation initializer { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2471 ;
[b87a5ed]2472
[de62360d]2473// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2474// '=' to separator the designator from the initializer value, as in:
[c11e31c]2475//
[b87a5ed]2476// int x[10] = { [1] = 3 };
[c11e31c]2477//
[de62360d]2478// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2479// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2480// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2481// shift/reduce conflicts
[51b73452]2482
2483designation:
[4d51835]2484 designator_list ':' // C99, CFA uses ":" instead of "="
[e16eb460]2485 | identifier_at ':' // GCC, field name
[d1625f8]2486 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2487 ;
[51b73452]2488
[b87a5ed]2489designator_list: // C99
[4d51835]2490 designator
[2871210]2491 | designator_list designator
[4a063df]2492 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2493 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2494 ;
[51b73452]2495
2496designator:
[e16eb460]2497 '.' identifier_at // C99, field name
[d1625f8]2498 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2499 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2500 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2501 { $$ = $3; }
[c0a33d2]2502 | '[' push subrange pop ']' // CFA, multiple array elements
2503 { $$ = $3; }
2504 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2505 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2506 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2507 { $$ = $4; }
[4d51835]2508 ;
[51b73452]2509
[de62360d]2510// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2511// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2512//
2513// Overloading: function, data, and operator identifiers may be overloaded.
2514//
[3ca7ef3]2515// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2516// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2517// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2518//
[de62360d]2519// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2520// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2521//
2522// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2523// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2524// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2525// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2526// on type arguments of polymorphic functions.
[c11e31c]2527
[b87a5ed]2528type_parameter_list: // CFA
[67cf18c]2529 type_parameter
2530 | type_parameter_list ',' type_parameter
[4d51835]2531 { $$ = $1->appendList( $3 ); }
2532 ;
[b87a5ed]2533
[84d58c5]2534type_initializer_opt: // CFA
2535 // empty
2536 { $$ = nullptr; }
2537 | '=' type
2538 { $$ = $2; }
2539 ;
2540
[b87a5ed]2541type_parameter: // CFA
[033ff37]2542 type_class identifier_or_type_name
[408ab79]2543 {
2544 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[ec3f9c8]2545 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated, use T " ); }
2546 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated, use T &" ); }
2547 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated, use T ..." ); }
[fd54fef]2548 }
[5a51798]2549 type_initializer_opt assertion_list_opt
[67cf18c]2550 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2551 | identifier_or_type_name new_type_class
2552 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2553 type_initializer_opt assertion_list_opt
2554 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2555 | '[' identifier_or_type_name ']'
[b66d14a]2556 {
[6e50a6b]2557 typedefTable.addToScope( *$2, TYPEDIMname, "9" );
2558 $$ = DeclarationNode::newTypeParam( TypeDecl::Dimension, $2 );
[b66d14a]2559 }
[5a51798]2560 // | type_specifier identifier_parameter_declarator
[9997fee]2561 | assertion_list
[07de76b]2562 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2563 ;
[b87a5ed]2564
[5a51798]2565new_type_class: // CFA
2566 // empty
2567 { $$ = TypeDecl::Otype; }
2568 | '&'
2569 { $$ = TypeDecl::Dtype; }
2570 | '*'
[b66d14a]2571 { $$ = TypeDecl::DStype; } // dtype + sized
[2ac218d]2572 // | '(' '*' ')'
2573 // { $$ = TypeDecl::Ftype; }
[5a51798]2574 | ELLIPSIS
2575 { $$ = TypeDecl::Ttype; }
2576 ;
2577
[b87a5ed]2578type_class: // CFA
[4040425]2579 OTYPE
[07de76b]2580 { $$ = TypeDecl::Otype; }
[4d51835]2581 | DTYPE
[07de76b]2582 { $$ = TypeDecl::Dtype; }
[8f60f0b]2583 | FTYPE
[07de76b]2584 { $$ = TypeDecl::Ftype; }
[8f60f0b]2585 | TTYPE
[07de76b]2586 { $$ = TypeDecl::Ttype; }
[4d51835]2587 ;
[b87a5ed]2588
2589assertion_list_opt: // CFA
[4d51835]2590 // empty
[58dd019]2591 { $$ = nullptr; }
[9997fee]2592 | assertion_list
2593 ;
2594
2595assertion_list: // CFA
2596 assertion
2597 | assertion_list assertion
[3ca7ef3]2598 { $$ = $1->appendList( $2 ); }
[4d51835]2599 ;
[b87a5ed]2600
2601assertion: // CFA
[033ff37]2602 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2603 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2604 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2605 { $$ = $4; }
[35718a9]2606 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2607 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2608 ;
[b87a5ed]2609
[84d58c5]2610type_list: // CFA
2611 type
[513e165]2612 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2613 | assignment_expression
[84d58c5]2614 | type_list ',' type
[4a063df]2615 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2616 | type_list ',' assignment_expression
[6e50a6b]2617 { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2618 ;
[b87a5ed]2619
2620type_declaring_list: // CFA
[4040425]2621 OTYPE type_declarator
[4d51835]2622 { $$ = $2; }
[4040425]2623 | storage_class_list OTYPE type_declarator
[4d51835]2624 { $$ = $3->addQualifiers( $1 ); }
2625 | type_declaring_list ',' type_declarator
[a7c90d4]2626 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2627 ;
[b87a5ed]2628
2629type_declarator: // CFA
[4d51835]2630 type_declarator_name assertion_list_opt
2631 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2632 | type_declarator_name assertion_list_opt '=' type
[4d51835]2633 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2634 ;
[b87a5ed]2635
2636type_declarator_name: // CFA
[033ff37]2637 identifier_or_type_name
[4d51835]2638 {
[ecae5860]2639 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2640 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2641 }
[033ff37]2642 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2643 {
[ecae5860]2644 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2645 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2646 }
2647 ;
[b87a5ed]2648
[4040425]2649trait_specifier: // CFA
[033ff37]2650 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2651 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2652 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2653 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2654 ;
[b87a5ed]2655
[84d58c5]2656trait_declaration_list: // CFA
[4040425]2657 trait_declaration
[13e8427]2658 | trait_declaration_list pop push trait_declaration
2659 { $$ = $1->appendList( $4 ); }
[4d51835]2660 ;
[b87a5ed]2661
[84d58c5]2662trait_declaration: // CFA
[13e8427]2663 cfa_trait_declaring_list ';'
2664 | trait_declaring_list ';'
[4d51835]2665 ;
[b87a5ed]2666
[c0aa336]2667cfa_trait_declaring_list: // CFA
2668 cfa_variable_specifier
2669 | cfa_function_specifier
2670 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2671 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2672 ;
[b87a5ed]2673
[4040425]2674trait_declaring_list: // CFA
[4d51835]2675 type_specifier declarator
[7fdb94e1]2676 { $$ = $2->addType( $1 ); }
[4040425]2677 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2678 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2679 ;
[51b73452]2680
[c11e31c]2681//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2682
2683translation_unit:
[3d56d15b]2684 // empty, input file
[4d51835]2685 | external_definition_list
[a7741435]2686 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2687 ;
[51b73452]2688
2689external_definition_list:
[35718a9]2690 push external_definition pop
2691 { $$ = $2; }
[fc20514]2692 | external_definition_list push external_definition pop
2693 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2694 ;
[51b73452]2695
2696external_definition_list_opt:
[4d51835]2697 // empty
[58dd019]2698 { $$ = nullptr; }
[3d56d15b]2699 | external_definition_list
2700 ;
2701
2702up:
[fc20514]2703 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2704 ;
2705
2706down:
2707 { typedefTable.down(); }
[4d51835]2708 ;
[51b73452]2709
2710external_definition:
[2d019af]2711 DIRECTIVE
2712 { $$ = DeclarationNode::newDirectiveStmt( new StatementNode( build_directive( $1 ) ) ); }
2713 | declaration
[4d51835]2714 | external_function_definition
[ecae5860]2715 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2716 {
2717 distExt( $2 ); // mark all fields in list
2718 $$ = $2;
2719 }
[e994912]2720 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
[5e25953]2721 { $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) ); }
[c0aa336]2722 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2723 {
[3b8e52c]2724 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2725 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2726 }
[3d56d15b]2727 '{' up external_definition_list_opt down '}'
[4d51835]2728 {
2729 linkage = linkageStack.top();
2730 linkageStack.pop();
[3d56d15b]2731 $$ = $6;
[8e9cbb2]2732 }
[9997fee]2733 | type_qualifier_list
2734 {
[3d56d15b]2735 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2736 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2737 }
2738 '{' up external_definition_list_opt down '}' // CFA, namespace
2739 {
[4c3ee8d]2740 distQual( $5, $1 );
[fc20514]2741 forall = false;
[3d56d15b]2742 $$ = $5;
[9997fee]2743 }
2744 | declaration_qualifier_list
2745 {
[4c3ee8d]2746 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2747 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2748 }
2749 '{' up external_definition_list_opt down '}' // CFA, namespace
2750 {
[4c3ee8d]2751 distQual( $5, $1 );
[fc20514]2752 forall = false;
[3d56d15b]2753 $$ = $5;
[9997fee]2754 }
2755 | declaration_qualifier_list type_qualifier_list
2756 {
[3d56d15b]2757 if ( ($1->type && $1->type->qualifiers.val) || $2->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2758 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2759 }
[3d56d15b]2760 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2761 {
[284da8c]2762 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2763 forall = false;
[3d56d15b]2764 $$ = $6;
[9997fee]2765 }
[4d51835]2766 ;
2767
2768external_function_definition:
2769 function_definition
[de62360d]2770 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2771 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2772 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2773 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2774 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2775 | function_declarator compound_statement
[c0a33d2]2776 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2777 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2778 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2779 ;
[51b73452]2780
[8b47e50]2781with_clause_opt:
2782 // empty
[9997fee]2783 { $$ = nullptr; forall = false; }
[578e6037]2784 | WITH '(' tuple_expression_list ')'
[9997fee]2785 { $$ = $3; forall = false; }
[8b47e50]2786 ;
2787
[51b73452]2788function_definition:
[8b47e50]2789 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2790 {
[481115f]2791 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2792 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2793 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2794 $$ = $1;
[4d51835]2795 }
[8b47e50]2796 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2797 {
[c38ae92]2798 rebindForall( $1, $2 );
[7fdb94e1]2799 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2800 }
2801 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2802 {
2803 rebindForall( $1, $2 );
[5fcba14]2804 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2805 }
[a16a7ec]2806 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2807 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2808 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2809 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2810 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2811 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2812 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2813 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2814 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2815
2816 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2817 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2818 {
[c38ae92]2819 rebindForall( $1, $2 );
[5fcba14]2820 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2821 }
[a16a7ec]2822 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2823 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2824 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2825 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2826 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2827 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2828 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2829 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2830 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2831 ;
[51b73452]2832
2833declarator:
[4d51835]2834 variable_declarator
[c6b1105]2835 | variable_type_redeclarator
[4d51835]2836 | function_declarator
2837 ;
[51b73452]2838
2839subrange:
[4d51835]2840 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]2841 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]2842 ;
[b87a5ed]2843
2844asm_name_opt: // GCC
[4d51835]2845 // empty
[58dd019]2846 { $$ = nullptr; }
2847 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2848 {
2849 DeclarationNode * name = new DeclarationNode();
2850 name->asmName = $3;
2851 $$ = name->addQualifiers( $5 );
2852 }
[4d51835]2853 ;
[b87a5ed]2854
2855attribute_list_opt: // GCC
[4d51835]2856 // empty
[58dd019]2857 { $$ = nullptr; }
[4d51835]2858 | attribute_list
2859 ;
[b87a5ed]2860
2861attribute_list: // GCC
[4d51835]2862 attribute
2863 | attribute_list attribute
[1db21619]2864 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2865 ;
[b87a5ed]2866
2867attribute: // GCC
[44a81853]2868 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2869 { $$ = $4; }
[4d51835]2870 ;
[b87a5ed]2871
[44a81853]2872attribute_name_list: // GCC
2873 attribute_name
2874 | attribute_name_list ',' attribute_name
[c0aa336]2875 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2876 ;
[b87a5ed]2877
[44a81853]2878attribute_name: // GCC
[4d51835]2879 // empty
[44a81853]2880 { $$ = nullptr; }
2881 | attr_name
2882 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]2883 | attr_name '(' argument_expression_list_opt ')'
[44a81853]2884 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2885 ;
[b87a5ed]2886
[44a81853]2887attr_name: // GCC
2888 IDENTIFIER
[5b2edbc]2889 | quasi_keyword
[44a81853]2890 | TYPEDEFname
2891 | TYPEGENname
[114014c]2892 | FALLTHROUGH
2893 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2894 | CONST
[9ff56e7]2895 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2896 ;
[51b73452]2897
[c11e31c]2898// ============================================================================
[de62360d]2899// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2900// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2901// in:
[c11e31c]2902//
[b87a5ed]2903// int (*f())[10] { ... };
2904// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2905//
[de62360d]2906// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2907// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2908// ============================================================================
2909
2910// ----------------------------------------------------------------------------
[de62360d]2911// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2912// to define a variable or function prototype, e.g.:
[c11e31c]2913//
[b87a5ed]2914// valid declaration invalid definition
2915// ----------------- ------------------
[4d51835]2916// int f; int f {}
2917// int *f; int *f {}
[b87a5ed]2918// int f[10]; int f[10] {}
[4d51835]2919// int (*f)(int); int (*f)(int) {}
[c11e31c]2920//
[de62360d]2921// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2922// variable_declarator and function_declarator.
[c11e31c]2923// ----------------------------------------------------------------------------
2924
[de62360d]2925// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2926// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2927
[5e25953]2928paren_identifier:
[e16eb460]2929 identifier_at
[5e25953]2930 { $$ = DeclarationNode::newName( $1 ); }
2931 | '(' paren_identifier ')' // redundant parenthesis
2932 { $$ = $2; }
2933 ;
2934
[51b73452]2935variable_declarator:
[4d51835]2936 paren_identifier attribute_list_opt
[1db21619]2937 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2938 | variable_ptr
2939 | variable_array attribute_list_opt
[1db21619]2940 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2941 | variable_function attribute_list_opt
[1db21619]2942 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2943 ;
[51b73452]2944
2945variable_ptr:
[dd51906]2946 ptrref_operator variable_declarator
[ce8c12f]2947 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2948 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2949 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]2950 | '(' variable_ptr ')' attribute_list_opt // redundant parenthesis
2951 { $$ = $2->addQualifiers( $4 ); }
2952 | '(' attribute_list variable_ptr ')' attribute_list_opt // redundant parenthesis
2953 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]2954 ;
[51b73452]2955
2956variable_array:
[4d51835]2957 paren_identifier array_dimension
2958 { $$ = $1->addArray( $2 ); }
2959 | '(' variable_ptr ')' array_dimension
2960 { $$ = $2->addArray( $4 ); }
[5e25953]2961 | '(' attribute_list variable_ptr ')' array_dimension
2962 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
2963 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2964 { $$ = $2->addArray( $4 ); }
[5e25953]2965 | '(' attribute_list variable_array ')' multi_array_dimension // redundant parenthesis
2966 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]2967 | '(' variable_array ')' // redundant parenthesis
2968 { $$ = $2; }
[5e25953]2969 | '(' attribute_list variable_array ')' // redundant parenthesis
2970 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2971 ;
[51b73452]2972
2973variable_function:
[4d51835]2974 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2975 { $$ = $2->addParamList( $6 ); }
[5e25953]2976 | '(' attribute_list variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2977 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]2978 | '(' variable_function ')' // redundant parenthesis
2979 { $$ = $2; }
[5e25953]2980 | '(' attribute_list variable_function ')' // redundant parenthesis
2981 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2982 ;
[51b73452]2983
[c6b1105]2984// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2985// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2986// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2987
2988function_declarator:
[4d51835]2989 function_no_ptr attribute_list_opt
[1db21619]2990 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2991 | function_ptr
2992 | function_array attribute_list_opt
[1db21619]2993 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2994 ;
[51b73452]2995
2996function_no_ptr:
[4d51835]2997 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2998 { $$ = $1->addParamList( $4 ); }
2999 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
3000 { $$ = $2->addParamList( $6 ); }
[5e25953]3001 | '(' attribute_list function_ptr ')' '(' push parameter_type_list_opt pop ')'
3002 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]3003 | '(' function_no_ptr ')' // redundant parenthesis
3004 { $$ = $2; }
[5e25953]3005 | '(' attribute_list function_no_ptr ')' // redundant parenthesis
3006 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3007 ;
[51b73452]3008
3009function_ptr:
[dd51906]3010 ptrref_operator function_declarator
[ce8c12f]3011 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3012 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]3013 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3014 | '(' function_ptr ')' attribute_list_opt
3015 { $$ = $2->addQualifiers( $4 ); }
3016 | '(' attribute_list function_ptr ')' attribute_list_opt
3017 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3018 ;
[51b73452]3019
3020function_array:
[4d51835]3021 '(' function_ptr ')' array_dimension
3022 { $$ = $2->addArray( $4 ); }
[5e25953]3023 | '(' attribute_list function_ptr ')' array_dimension
3024 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3025 | '(' function_array ')' multi_array_dimension // redundant parenthesis
3026 { $$ = $2->addArray( $4 ); }
[5e25953]3027 | '(' attribute_list function_array ')' multi_array_dimension // redundant parenthesis
3028 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3029 | '(' function_array ')' // redundant parenthesis
3030 { $$ = $2; }
[5e25953]3031 | '(' attribute_list function_array ')' // redundant parenthesis
3032 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3033 ;
[51b73452]3034
[c0aa336]3035// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
3036//
3037// f( a, b, c ) int a, *b, c[]; {}
3038//
3039// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
3040// returning arrays and functions versus pointers to arrays and functions.
[51b73452]3041
[c0aa336]3042KR_function_declarator:
3043 KR_function_no_ptr
3044 | KR_function_ptr
3045 | KR_function_array
[4d51835]3046 ;
[51b73452]3047
[c0aa336]3048KR_function_no_ptr:
[4d51835]3049 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
3050 { $$ = $1->addIdList( $3 ); }
[c0a33d2]3051 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3052 { $$ = $2->addParamList( $6 ); }
[5e25953]3053 | '(' attribute_list KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3054 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[c0aa336]3055 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]3056 { $$ = $2; }
[5e25953]3057 | '(' attribute_list KR_function_no_ptr ')' // redundant parenthesis
3058 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3059 ;
[51b73452]3060
[c0aa336]3061KR_function_ptr:
3062 ptrref_operator KR_function_declarator
[ce8c12f]3063 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3064 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]3065 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3066 | '(' KR_function_ptr ')'
[4d51835]3067 { $$ = $2; }
[5e25953]3068 | '(' attribute_list KR_function_ptr ')'
3069 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3070 ;
[51b73452]3071
[c0aa336]3072KR_function_array:
3073 '(' KR_function_ptr ')' array_dimension
[4d51835]3074 { $$ = $2->addArray( $4 ); }
[5e25953]3075 | '(' attribute_list KR_function_ptr ')' array_dimension
3076 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3077 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3078 { $$ = $2->addArray( $4 ); }
[5e25953]3079 | '(' attribute_list KR_function_array ')' multi_array_dimension // redundant parenthesis
3080 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3081 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]3082 { $$ = $2; }
[5e25953]3083 | '(' attribute_list KR_function_array ')' // redundant parenthesis
3084 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3085 ;
[51b73452]3086
[2871210]3087// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]3088//
[b87a5ed]3089// typedef int foo;
3090// {
3091// int foo; // redefine typedef name in new scope
3092// }
[c11e31c]3093//
[de62360d]3094// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3095// and functions versus pointers to arrays and functions.
[51b73452]3096
[2871210]3097paren_type:
[f9c3100]3098 typedef_name
[c4f68dc]3099 {
[f9c3100]3100 // hide type name in enclosing scope by variable name
3101 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
[c4f68dc]3102 }
[2871210]3103 | '(' paren_type ')'
[4d51835]3104 { $$ = $2; }
3105 ;
[51b73452]3106
[5e25953]3107variable_type_redeclarator:
3108 paren_type attribute_list_opt
3109 { $$ = $1->addQualifiers( $2 ); }
3110 | type_ptr
3111 | type_array attribute_list_opt
3112 { $$ = $1->addQualifiers( $2 ); }
3113 | type_function attribute_list_opt
3114 { $$ = $1->addQualifiers( $2 ); }
3115 ;
3116
[2871210]3117type_ptr:
[c6b1105]3118 ptrref_operator variable_type_redeclarator
[ce8c12f]3119 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3120 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3121 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3122 | '(' type_ptr ')' attribute_list_opt // redundant parenthesis
3123 { $$ = $2->addQualifiers( $4 ); }
3124 | '(' attribute_list type_ptr ')' attribute_list_opt // redundant parenthesis
3125 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3126 ;
[51b73452]3127
[2871210]3128type_array:
3129 paren_type array_dimension
[4d51835]3130 { $$ = $1->addArray( $2 ); }
[2871210]3131 | '(' type_ptr ')' array_dimension
[4d51835]3132 { $$ = $2->addArray( $4 ); }
[5e25953]3133 | '(' attribute_list type_ptr ')' array_dimension
3134 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3135 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3136 { $$ = $2->addArray( $4 ); }
[5e25953]3137 | '(' attribute_list type_array ')' multi_array_dimension // redundant parenthesis
3138 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3139 | '(' type_array ')' // redundant parenthesis
[4d51835]3140 { $$ = $2; }
[5e25953]3141 | '(' attribute_list type_array ')' // redundant parenthesis
3142 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3143 ;
[51b73452]3144
[2871210]3145type_function:
3146 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3147 { $$ = $1->addParamList( $4 ); }
[2871210]3148 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3149 { $$ = $2->addParamList( $6 ); }
[5e25953]3150 | '(' attribute_list type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3151 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[2871210]3152 | '(' type_function ')' // redundant parenthesis
[4d51835]3153 { $$ = $2; }
[5e25953]3154 | '(' attribute_list type_function ')' // redundant parenthesis
3155 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3156 ;
[51b73452]3157
[c0aa336]3158// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3159// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3160// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3161// pointers to arrays and functions.
[51b73452]3162
3163identifier_parameter_declarator:
[4d51835]3164 paren_identifier attribute_list_opt
[1db21619]3165 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3166 | '&' MUTEX paren_identifier attribute_list_opt
3167 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3168 | identifier_parameter_ptr
3169 | identifier_parameter_array attribute_list_opt
[1db21619]3170 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3171 | identifier_parameter_function attribute_list_opt
[1db21619]3172 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3173 ;
[51b73452]3174
3175identifier_parameter_ptr:
[dd51906]3176 ptrref_operator identifier_parameter_declarator
[ce8c12f]3177 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3178 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3179 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3180 | '(' identifier_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3181 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3182 ;
[51b73452]3183
3184identifier_parameter_array:
[4d51835]3185 paren_identifier array_parameter_dimension
3186 { $$ = $1->addArray( $2 ); }
3187 | '(' identifier_parameter_ptr ')' array_dimension
3188 { $$ = $2->addArray( $4 ); }
3189 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3190 { $$ = $2->addArray( $4 ); }
3191 | '(' identifier_parameter_array ')' // redundant parenthesis
3192 { $$ = $2; }
3193 ;
[51b73452]3194
3195identifier_parameter_function:
[c0a33d2]3196 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3197 { $$ = $1->addParamList( $4 ); }
3198 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3199 { $$ = $2->addParamList( $6 ); }
[4d51835]3200 | '(' identifier_parameter_function ')' // redundant parenthesis
3201 { $$ = $2; }
3202 ;
[b87a5ed]3203
[de62360d]3204// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3205// e.g.:
[c11e31c]3206//
[b87a5ed]3207// typedef int foo;
[114014c]3208// forall( otype T ) struct foo;
[b87a5ed]3209// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3210//
[c0aa336]3211// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3212
[2871210]3213type_parameter_redeclarator:
[f9c3100]3214 typedef_name attribute_list_opt
[1db21619]3215 { $$ = $1->addQualifiers( $2 ); }
[f9c3100]3216 | '&' MUTEX typedef_name attribute_list_opt
[b6b3c42]3217 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3218 | type_parameter_ptr
3219 | type_parameter_array attribute_list_opt
[1db21619]3220 { $$ = $1->addQualifiers( $2 ); }
[2871210]3221 | type_parameter_function attribute_list_opt
[1db21619]3222 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3223 ;
[51b73452]3224
[f9c3100]3225typedef_name:
[4d51835]3226 TYPEDEFname
[7fdb94e1]3227 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3228 | TYPEGENname
[7fdb94e1]3229 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3230 ;
[51b73452]3231
[2871210]3232type_parameter_ptr:
[dd51906]3233 ptrref_operator type_parameter_redeclarator
[ce8c12f]3234 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3235 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3236 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3237 | '(' type_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3238 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3239 ;
[51b73452]3240
[2871210]3241type_parameter_array:
[f9c3100]3242 typedef_name array_parameter_dimension
[4d51835]3243 { $$ = $1->addArray( $2 ); }
[2871210]3244 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3245 { $$ = $2->addArray( $4 ); }
3246 ;
[51b73452]3247
[2871210]3248type_parameter_function:
[f9c3100]3249 typedef_name '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[c0a33d2]3250 { $$ = $1->addParamList( $4 ); }
3251 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3252 { $$ = $2->addParamList( $6 ); }
[4d51835]3253 ;
[b87a5ed]3254
[de62360d]3255// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3256// which the type applies, e.g.:
[c11e31c]3257//
[b87a5ed]3258// sizeof( int );
[c0aa336]3259// sizeof( int * );
[b87a5ed]3260// sizeof( int [10] );
[c0aa336]3261// sizeof( int (*)() );
3262// sizeof( int () );
[c11e31c]3263//
[de62360d]3264// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3265// and functions versus pointers to arrays and functions.
[51b73452]3266
3267abstract_declarator:
[4d51835]3268 abstract_ptr
3269 | abstract_array attribute_list_opt
[1db21619]3270 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3271 | abstract_function attribute_list_opt
[1db21619]3272 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3273 ;
[51b73452]3274
3275abstract_ptr:
[dd51906]3276 ptrref_operator
[ce8c12f]3277 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3278 | ptrref_operator type_qualifier_list
[ce8c12f]3279 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3280 | ptrref_operator abstract_declarator
[ce8c12f]3281 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3282 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3283 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3284 | '(' abstract_ptr ')' attribute_list_opt
3285 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3286 ;
[51b73452]3287
3288abstract_array:
[4d51835]3289 array_dimension
3290 | '(' abstract_ptr ')' array_dimension
3291 { $$ = $2->addArray( $4 ); }
3292 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3293 { $$ = $2->addArray( $4 ); }
3294 | '(' abstract_array ')' // redundant parenthesis
3295 { $$ = $2; }
3296 ;
[51b73452]3297
3298abstract_function:
[c0a33d2]3299 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3300 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3301 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3302 { $$ = $2->addParamList( $6 ); }
[4d51835]3303 | '(' abstract_function ')' // redundant parenthesis
3304 { $$ = $2; }
3305 ;
[51b73452]3306
3307array_dimension:
[4d51835]3308 // Only the first dimension can be empty.
[2871210]3309 '[' ']'
[4d51835]3310 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3311 | '[' ']' multi_array_dimension
3312 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[6a99803]3313 | '[' push assignment_expression pop ',' comma_expression ']'
3314 { $$ = DeclarationNode::newArray( $3, 0, false )->addArray( DeclarationNode::newArray( $6, 0, false ) ); }
3315 // { SemanticError( yylloc, "New array dimension is currently unimplemented." ); $$ = nullptr; }
[4d51835]3316 | multi_array_dimension
3317 ;
[51b73452]3318
3319multi_array_dimension:
[c0a33d2]3320 '[' push assignment_expression pop ']'
3321 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3322 | '[' push '*' pop ']' // C99
[4d51835]3323 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3324 | multi_array_dimension '[' push assignment_expression pop ']'
3325 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3326 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3327 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3328 ;
[51b73452]3329
[c11e31c]3330// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3331// identifier to which the type applies, e.g.:
3332//
[c0aa336]3333// int f( int ); // not handled here
3334// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3335// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3336// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3337//
[de62360d]3338// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3339// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3340// special meaning of parenthesis around a typedef name:
3341//
3342// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3343// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3344// not as redundant parentheses around the identifier."
3345//
3346// For example:
3347//
3348// typedef float T;
3349// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3350// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3351// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3352// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3353//
3354// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3355// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3356// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3357// functions.
[51b73452]3358
3359abstract_parameter_declarator:
[4d51835]3360 abstract_parameter_ptr
[b6b3c42]3361 | '&' MUTEX attribute_list_opt
3362 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3363 | abstract_parameter_array attribute_list_opt
[1db21619]3364 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3365 | abstract_parameter_function attribute_list_opt
[1db21619]3366 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3367 ;
[51b73452]3368
3369abstract_parameter_ptr:
[dd51906]3370 ptrref_operator
[ce8c12f]3371 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3372 | ptrref_operator type_qualifier_list
[ce8c12f]3373 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3374 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3375 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3376 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3377 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3378 | '(' abstract_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3379 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3380 ;
[51b73452]3381
3382abstract_parameter_array:
[4d51835]3383 array_parameter_dimension
3384 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3385 { $$ = $2->addArray( $4 ); }
3386 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3387 { $$ = $2->addArray( $4 ); }
3388 | '(' abstract_parameter_array ')' // redundant parenthesis
3389 { $$ = $2; }
3390 ;
[51b73452]3391
3392abstract_parameter_function:
[c0a33d2]3393 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3394 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3395 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3396 { $$ = $2->addParamList( $6 ); }
[4d51835]3397 | '(' abstract_parameter_function ')' // redundant parenthesis
3398 { $$ = $2; }
3399 ;
[51b73452]3400
3401array_parameter_dimension:
[4d51835]3402 // Only the first dimension can be empty or have qualifiers.
3403 array_parameter_1st_dimension
3404 | array_parameter_1st_dimension multi_array_dimension
3405 { $$ = $1->addArray( $2 ); }
3406 | multi_array_dimension
3407 ;
[51b73452]3408
[c11e31c]3409// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3410//
[de62360d]3411// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3412// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3413
3414array_parameter_1st_dimension:
[2871210]3415 '[' ']'
[4d51835]3416 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3417 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3418 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3419 { $$ = DeclarationNode::newVarArray( $3 ); }
3420 | '[' push type_qualifier_list pop ']'
3421 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3422 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3423 | '[' push type_qualifier_list assignment_expression pop ']'
3424 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3425 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3426 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3427 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3428 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3429 ;
[b87a5ed]3430
[c0aa336]3431// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3432//
[c0aa336]3433// struct S {
3434// int;
3435// int *;
3436// int [10];
3437// int (*)();
3438// };
[51b73452]3439
3440variable_abstract_declarator:
[4d51835]3441 variable_abstract_ptr
3442 | variable_abstract_array attribute_list_opt
[1db21619]3443 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3444 | variable_abstract_function attribute_list_opt
[1db21619]3445 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3446 ;
[51b73452]3447
3448variable_abstract_ptr:
[dd51906]3449 ptrref_operator
[ce8c12f]3450 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3451 | ptrref_operator type_qualifier_list
[ce8c12f]3452 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3453 | ptrref_operator variable_abstract_declarator
[ce8c12f]3454 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3455 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3456 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3457 | '(' variable_abstract_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3458 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3459 ;
[51b73452]3460
3461variable_abstract_array:
[4d51835]3462 array_dimension
3463 | '(' variable_abstract_ptr ')' array_dimension
3464 { $$ = $2->addArray( $4 ); }
3465 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3466 { $$ = $2->addArray( $4 ); }
3467 | '(' variable_abstract_array ')' // redundant parenthesis
3468 { $$ = $2; }
3469 ;
[51b73452]3470
3471variable_abstract_function:
[c0a33d2]3472 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3473 { $$ = $2->addParamList( $6 ); }
[4d51835]3474 | '(' variable_abstract_function ')' // redundant parenthesis
3475 { $$ = $2; }
3476 ;
[b87a5ed]3477
[de62360d]3478// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3479// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3480
[c0aa336]3481cfa_identifier_parameter_declarator_tuple: // CFA
3482 cfa_identifier_parameter_declarator_no_tuple
3483 | cfa_abstract_tuple
3484 | type_qualifier_list cfa_abstract_tuple
[4d51835]3485 { $$ = $2->addQualifiers( $1 ); }
3486 ;
[b87a5ed]3487
[c0aa336]3488cfa_identifier_parameter_declarator_no_tuple: // CFA
3489 cfa_identifier_parameter_ptr
3490 | cfa_identifier_parameter_array
[4d51835]3491 ;
[b87a5ed]3492
[c0aa336]3493cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3494 // No SUE declaration in parameter list.
3495 ptrref_operator type_specifier_nobody
[ce8c12f]3496 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3497 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3498 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3499 | ptrref_operator cfa_abstract_function
[ce8c12f]3500 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3501 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3502 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3503 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3504 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3505 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3506 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3507 ;
[b87a5ed]3508
[c0aa336]3509cfa_identifier_parameter_array: // CFA
[de62360d]3510 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3511 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3512 '[' ']' type_specifier_nobody
[2871210]3513 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3514 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3515 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3516 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3517 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3518 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3519 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3520 | multi_array_dimension type_specifier_nobody
[4d51835]3521 { $$ = $2->addNewArray( $1 ); }
[9059213]3522
[c0aa336]3523 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3524 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3525 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3526 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3527 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3528 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3529 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3530 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3531 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3532 { $$ = $2->addNewArray( $1 ); }
3533 ;
[51b73452]3534
[c0aa336]3535cfa_array_parameter_1st_dimension:
[c0a33d2]3536 '[' push type_qualifier_list '*' pop ']' // remaining C99
3537 { $$ = DeclarationNode::newVarArray( $3 ); }
3538 | '[' push type_qualifier_list assignment_expression pop ']'
3539 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3540 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3541 // declaration_qualifier_list must be used because of shift/reduce conflict with
3542 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3543 // appear in this context.
[c0a33d2]3544 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3545 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3546 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3547 ;
[b87a5ed]3548
[de62360d]3549// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3550// identifier to which the type applies, e.g.:
[c11e31c]3551//
[b87a5ed]3552// [int] f( int ); // abstract variable parameter; no parameter name specified
3553// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3554//
3555// These rules need LR(3):
3556//
[c0aa336]3557// cfa_abstract_tuple identifier_or_type_name
[40de461]3558// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3559//
3560// since a function return type can be syntactically identical to a tuple type:
3561//
[b87a5ed]3562// [int, int] t;
3563// [int, int] f( int );
[c11e31c]3564//
[2871210]3565// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3566// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3567// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3568// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3569
[c0aa336]3570cfa_abstract_declarator_tuple: // CFA
3571 cfa_abstract_tuple
3572 | type_qualifier_list cfa_abstract_tuple
[4d51835]3573 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3574 | cfa_abstract_declarator_no_tuple
[4d51835]3575 ;
[b87a5ed]3576
[c0aa336]3577cfa_abstract_declarator_no_tuple: // CFA
3578 cfa_abstract_ptr
3579 | cfa_abstract_array
[4d51835]3580 ;
[b87a5ed]3581
[c0aa336]3582cfa_abstract_ptr: // CFA
[dd51906]3583 ptrref_operator type_specifier
[ce8c12f]3584 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3585 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3586 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3587 | ptrref_operator cfa_abstract_function
[ce8c12f]3588 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3589 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3590 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3591 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3592 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3593 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3594 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3595 ;
[b87a5ed]3596
[c0aa336]3597cfa_abstract_array: // CFA
[de62360d]3598 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3599 // empty (void) function return type.
[2871210]3600 '[' ']' type_specifier
[2298f728]3601 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3602 | '[' ']' multi_array_dimension type_specifier
[2298f728]3603 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3604 | multi_array_dimension type_specifier
3605 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3606 | '[' ']' cfa_abstract_ptr
[2298f728]3607 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3608 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3609 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3610 | multi_array_dimension cfa_abstract_ptr
[4d51835]3611 { $$ = $2->addNewArray( $1 ); }
3612 ;
[b87a5ed]3613
[c0aa336]3614cfa_abstract_tuple: // CFA
[c0a33d2]3615 '[' push cfa_abstract_parameter_list pop ']'
3616 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3617 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3618 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3619 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3620 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3621 ;
[b87a5ed]3622
[c0aa336]3623cfa_abstract_function: // CFA
[40de461]3624// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3625// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3626 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3627 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3628 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3629 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3630 ;
[b87a5ed]3631
[de62360d]3632// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3633// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3634//
[de62360d]3635// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3636// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3637//
3638// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3639// prototype-format parameter type declarators) is an obsolescent feature."
3640//
[de62360d]3641// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3642// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3643
[c11e31c]3644//************************* MISCELLANEOUS ********************************
[51b73452]3645
[b87a5ed]3646comma_opt: // redundant comma
[4d51835]3647 // empty
3648 | ','
3649 ;
[51b73452]3650
[5a51798]3651default_initializer_opt:
[4d51835]3652 // empty
[58dd019]3653 { $$ = nullptr; }
[4d51835]3654 | '=' assignment_expression
3655 { $$ = $2; }
3656 ;
[51b73452]3657
3658%%
[a1c9ddd]3659
[c11e31c]3660// ----end of grammar----
[51b73452]3661
[c11e31c]3662// Local Variables: //
[b87a5ed]3663// mode: c++ //
[de62360d]3664// tab-width: 4 //
[c11e31c]3665// compile-command: "make install" //
3666// End: //
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