source: src/Parser/parser.yy@ c4b10e2

ADT ast-experimental pthread-emulation qualifiedEnum
Last change on this file since c4b10e2 was d8454b9, checked in by Peter A. Buhr <pabuhr@…>, 3 years ago

add better error message for attributes after "with" clause, commented out print statements that will be removed shortly

  • Property mode set to 100644
File size: 152.5 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
[d8454b9]12// Last Modified On : Sat May 14 09:16:22 2022
13// Update Count : 5401
[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
[d8454b9]57#include "SynTree/Attribute.h" // for Attribute
58
[cbaee0d]59extern DeclarationNode * parseTree;
[8b7ee09]60extern LinkageSpec::Spec linkage;
[0da3e2c]61extern TypedefTable typedefTable;
62
[408ab79]63stack<LinkageSpec::Spec> linkageStack;
[7bf7fb9]64
[15697ff]65bool appendStr( string & to, string & from ) {
66 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]67 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]68 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
69 // easier to let the C compiler handle this case.
70 //
71 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
72 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
[efc8f3e]73 // e.g., u"a" U"b" L"c" is disallowed.
[15697ff]74
75 if ( from[0] != '"' ) { // encoding ?
76 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]77 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]78 yyerror( "non-matching string encodings for string-literal concatenation" );
79 return false; // parse error, must call YYERROR in action
[ea0c5e3]80 } else if ( from[1] == '8' ) {
81 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]82 } // if
83 } else {
[ea0c5e3]84 if ( from[1] == '8' ) { // move encoding to start
85 to = "u8" + to;
86 from.erase( 0, 1 ); // remove 2nd encoding
87 } else {
88 to = from[0] + to;
89 } // if
[15697ff]90 } // if
91 from.erase( 0, 1 ); // remove 2nd encoding
92 } // if
93 to += " " + from; // concatenated into single string
94 return true;
[7bf7fb9]95} // appendStr
[c0aa336]96
[d8454b9]97DeclarationNode * distAttr( DeclarationNode * typeSpec, DeclarationNode * declList ) {
98 // distribute declaration_specifier across all declared variables, e.g., static, const, but not __attribute__.
99 assert( declList );
100// printf( "distAttr1 typeSpec %p\n", typeSpec ); typeSpec->print( std::cout );
101 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( typeSpec );
102// printf( "distAttr2 cl %p\n", cl ); cl->type->print( std::cout );
103// cl->type->aggregate.name = cl->type->aggInst.aggregate->aggregate.name;
104
[6d01d89]105 for ( cur = dynamic_cast<DeclarationNode *>( cur->get_next() ); cur != nullptr; cur = dynamic_cast<DeclarationNode *>( cur->get_next() ) ) {
[c0aa336]106 cl->cloneBaseType( cur );
107 } // for
108 declList->addType( cl );
[d8454b9]109// printf( "distAttr3 declList %p\n", declList ); declList->print( std::cout, 0 );
[c0aa336]110 return declList;
111} // distAttr
112
113void distExt( DeclarationNode * declaration ) {
114 // distribute EXTENSION across all declarations
115 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
116 iter->set_extension( true );
117 } // for
118} // distExt
[fdca7c6]119
[e07caa2]120void distInl( DeclarationNode * declaration ) {
[5695645]121 // distribute INLINE across all declarations
[e07caa2]122 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
123 iter->set_inLine( true );
124 } // for
125} // distInl
126
[4c3ee8d]127void distQual( DeclarationNode * declaration, DeclarationNode * qualifiers ) {
[284da8c]128 // distribute qualifiers across all non-variable declarations in a distribution statemement
[4c3ee8d]129 for ( DeclarationNode * iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[284da8c]130 // SKULLDUGGERY: Distributions are parsed inside out, so qualifiers are added to declarations inside out. Since
131 // addQualifiers appends to the back of the list, the forall clauses are in the wrong order (right to left). To
132 // get the qualifiers in the correct order and still use addQualifiers (otherwise, 90% of addQualifiers has to
133 // be copied to add to front), the appropriate forall pointers are interchanged before calling addQualifiers.
134 DeclarationNode * clone = qualifiers->clone();
135 if ( qualifiers->type ) { // forall clause ? (handles SC)
136 if ( iter->type->kind == TypeData::Aggregate ) { // struct/union ?
137 swap( clone->type->forall, iter->type->aggregate.params );
138 iter->addQualifiers( clone );
139 } else if ( iter->type->kind == TypeData::AggregateInst && iter->type->aggInst.aggregate->aggregate.body ) { // struct/union ?
140 // Create temporary node to hold aggregate, call addQualifiers as above, then put nodes back together.
141 DeclarationNode newnode;
142 swap( newnode.type, iter->type->aggInst.aggregate );
143 swap( clone->type->forall, newnode.type->aggregate.params );
144 newnode.addQualifiers( clone );
145 swap( newnode.type, iter->type->aggInst.aggregate );
146 } else if ( iter->type->kind == TypeData::Function ) { // routines ?
147 swap( clone->type->forall, iter->type->forall );
148 iter->addQualifiers( clone );
149 } // if
150 } else { // just SC qualifiers
151 iter->addQualifiers( clone );
152 } // if
[4c3ee8d]153 } // for
[284da8c]154 delete qualifiers;
155} // distQual
[4c3ee8d]156
[c38ae92]157// There is an ambiguity for inline generic-routine return-types and generic routines.
158// forall( otype T ) struct S { int i; } bar( T ) {}
159// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
160// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]161// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
162// forall( otype T ) struct S { int T; };
163// forall( otype W ) bar( W ) {}
[c38ae92]164
165void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]166 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]167 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
168 declSpec->type->aggregate.params = nullptr;
169 } // if
170} // rebindForall
171
[60a8062]172string * build_postfix_name( string * name ) {
173 *name = string("__postfix_func_") + *name;
174 return name;
[dc7db63]175} // build_postfix_name
176
[f7e4db27]177DeclarationNode * fieldDecl( DeclarationNode * typeSpec, DeclarationNode * fieldList ) {
178 if ( ! fieldList ) { // field declarator ?
[553772b]179 if ( ! ( typeSpec->type && (typeSpec->type->kind == TypeData::Aggregate || typeSpec->type->kind == TypeData::Enum) ) ) {
[f7e4db27]180 stringstream ss;
[d8454b9]181 // printf( "fieldDecl1 typeSpec %p\n", typeSpec ); typeSpec->type->print( std::cout );
[f7e4db27]182 SemanticWarning( yylloc, Warning::SuperfluousDecl, ss.str().c_str() );
183 return nullptr;
184 } // if
[d8454b9]185 // printf( "fieldDecl2 typeSpec %p\n", typeSpec ); typeSpec->type->print( std::cout );
[f7e4db27]186 fieldList = DeclarationNode::newName( nullptr );
187 } // if
[d8454b9]188// return distAttr( typeSpec, fieldList ); // mark all fields in list
189
190 // printf( "fieldDecl3 typeSpec %p\n", typeSpec ); typeSpec->print( std::cout, 0 );
191 DeclarationNode * temp = distAttr( typeSpec, fieldList ); // mark all fields in list
192 // printf( "fieldDecl4 temp %p\n", temp ); temp->print( std::cout, 0 );
193 return temp;
[f7e4db27]194} // fieldDecl
195
[cc22003]196ForCtrl * forCtrl( ExpressionNode * type, string * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]197 ConstantExpr * constant = dynamic_cast<ConstantExpr *>(type->expr.get());
[0982a05]198 if ( constant && (constant->get_constant()->get_value() == "0" || constant->get_constant()->get_value() == "1") ) {
[ec3f9c8]199 type = new ExpressionNode( new CastExpr( maybeMoveBuild<Expression>(type), new BasicType( Type::Qualifiers(), BasicType::SignedInt ) ) );
[0982a05]200 } // if
[c99a0d1]201// type = new ExpressionNode( build_func( new ExpressionNode( build_varref( new string( "__for_control_index_constraints__" ) ) ), type ) );
[f271bdd]202 return new ForCtrl(
[5753b33]203 distAttr( DeclarationNode::newTypeof( type, true ), DeclarationNode::newName( index )->addInitializer( new InitializerNode( start ) ) ),
[2d2df9f]204 // NULL comp/inc => leave blank
205 comp ? new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index ) ) ), comp ) ) : 0,
206 inc ? new ExpressionNode( build_binary_val( compop == OperKinds::LThan || compop == OperKinds::LEThan ? // choose += or -= for upto/downto
207 OperKinds::PlusAssn : OperKinds::MinusAssn, new ExpressionNode( build_varref( new string( *index ) ) ), inc ) ) : 0 );
[f271bdd]208} // forCtrl
209
[f1aeede]210ForCtrl * forCtrl( ExpressionNode * type, ExpressionNode * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]211 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(index->expr.get()) ) {
[f1aeede]212 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
[1dda8de]213 } else if ( CommaExpr * commaExpr = dynamic_cast<CommaExpr *>(index->expr.get()) ) {
[6d01d89]214 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(commaExpr->arg1 ) ) {
215 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
216 } else {
[3ca7ef3]217 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[6d01d89]218 } // if
[f1aeede]219 } else {
[3ca7ef3]220 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[f1aeede]221 } // if
[f271bdd]222} // forCtrl
223
[24711a3]224bool forall = false; // aggregate have one or more forall qualifiers ?
[d48e529]225
[201aeb9]226// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
227#define YYLLOC_DEFAULT(Cur, Rhs, N) \
228if ( N ) { \
229 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
230 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
231 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
232 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
233 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
234} else { \
235 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
236 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
237 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
238}
[51b73452]239%}
240
[15697ff]241%define parse.error verbose
242
[201aeb9]243// Types declaration for productions
[0982a05]244%union {
[a67b60e]245 Token tok;
246 ParseNode * pn;
247 ExpressionNode * en;
248 DeclarationNode * decl;
[312029a]249 AggregateDecl::Aggregate aggKey;
[07de76b]250 TypeDecl::Kind tclass;
[a67b60e]251 StatementNode * sn;
[135b431]252 WaitForStmt * wfs;
[e612146c]253 Expression * constant;
[473d1da0]254 CondCtl * ifctl;
[f271bdd]255 ForCtrl * fctl;
[cc22003]256 enum OperKinds compop;
[a67b60e]257 LabelNode * label;
258 InitializerNode * in;
259 OperKinds op;
260 std::string * str;
261 bool flag;
[307a732]262 CatchStmt::Kind catch_kind;
[d807ca28]263 GenericExpr * genexpr;
[a67b60e]264}
265
[c11e31c]266//************************* TERMINAL TOKENS ********************************
[51b73452]267
[c11e31c]268// keywords
[51b73452]269%token TYPEDEF
[a7c90d4]270%token EXTERN STATIC AUTO REGISTER
271%token THREADLOCAL // C11
272%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
273%token NORETURN // C11
[51b73452]274%token CONST VOLATILE
[b87a5ed]275%token RESTRICT // C99
[a7c90d4]276%token ATOMIC // C11
[1f652a7]277%token FORALL MUTEX VIRTUAL VTABLE COERCE // CFA
[72457b6]278%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]279%token BOOL COMPLEX IMAGINARY // C99
[f1da02c]280%token INT128 UINT128 uuFLOAT80 uuFLOAT128 // GCC
[e15853c]281%token uFLOAT16 uFLOAT32 uFLOAT32X uFLOAT64 uFLOAT64X uFLOAT128 // GCC
[15f769c]282%token DECIMAL32 DECIMAL64 DECIMAL128 // GCC
[72457b6]283%token ZERO_T ONE_T // CFA
[1f652a7]284%token SIZEOF TYPEOF VALIST AUTO_TYPE // GCC
285%token OFFSETOF BASETYPEOF TYPEID // CFA
[51b73452]286%token ENUM STRUCT UNION
[c27fb59]287%token EXCEPTION // CFA
[553772b]288%token GENERATOR COROUTINE MONITOR THREAD // CFA
[a7c90d4]289%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[25744d2]290// %token RESUME // CFA
[1f652a7]291%token LABEL // GCC
[25744d2]292%token SUSPEND // CFA
[b87a5ed]293%token ATTRIBUTE EXTENSION // GCC
[51b73452]294%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[4744074]295%token CHOOSE FALLTHRU FALLTHROUGH WITH WHEN WAITFOR // CFA
296%token DISABLE ENABLE TRY THROW THROWRESUME AT // CFA
[b87a5ed]297%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
[a7c90d4]298%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
[51b73452]299
[c11e31c]300// names and constants: lexer differentiates between identifier and typedef names
[6e50a6b]301%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDIMname TYPEDEFname TYPEGENname
[9fb1367]302%token<tok> TIMEOUT WOR CATCH RECOVER CATCHRESUME FIXUP FINALLY // CFA
303%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
[61fc4f6]304%token<tok> DIRECTIVE
[1b29996]305// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
306// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
307// converted into the tuple index (.)(1). e.g., 3.x
[930f69e]308%token<tok> FLOATING_DECIMALconstant FLOATING_FRACTIONconstant FLOATINGconstant
[51b73452]309
[c11e31c]310// multi-character operators
[b87a5ed]311%token ARROW // ->
312%token ICR DECR // ++ --
313%token LS RS // << >>
314%token LE GE EQ NE // <= >= == !=
315%token ANDAND OROR // && ||
316%token ELLIPSIS // ...
317
[e5f2a67]318%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
[b87a5ed]319%token PLUSassign MINUSassign // += -=
320%token LSassign RSassign // <<= >>=
321%token ANDassign ERassign ORassign // &= ^= |=
[51b73452]322
[d69f4bb4]323%token ErangeUpEq ErangeDown ErangeDownEq // ~= -~ -~=
[e7aed49]324%token ATassign // @=
[097e2b0]325
[e16eb460]326%type<tok> identifier identifier_at identifier_or_type_name attr_name
[5b2edbc]327%type<tok> quasi_keyword
[ab57786]328%type<constant> string_literal
329%type<str> string_literal_list
[51b73452]330
[c11e31c]331// expressions
[d1625f8]332%type<en> constant
[b87a5ed]333%type<en> tuple tuple_expression_list
[f9c3100]334%type<op> ptrref_operator unary_operator assignment_operator simple_assignment_operator compound_assignment_operator
[b87a5ed]335%type<en> primary_expression postfix_expression unary_expression
[4a063df]336%type<en> cast_expression_list cast_expression exponential_expression multiplicative_expression additive_expression
[994d080]337%type<en> shift_expression relational_expression equality_expression
338%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
339%type<en> logical_AND_expression logical_OR_expression
340%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]341%type<en> comma_expression comma_expression_opt
[e16eb460]342%type<en> argument_expression_list_opt argument_expression_list argument_expression default_initializer_opt
[473d1da0]343%type<ifctl> conditional_declaration
[6d01d89]344%type<fctl> for_control_expression for_control_expression_list
[cc22003]345%type<compop> inclexcl
[51b73452]346%type<en> subrange
[c0aa336]347%type<decl> asm_name_opt
[67d4e37]348%type<en> asm_operands_opt asm_operands_list asm_operand
[7f5566b]349%type<label> label_list
[d1625f8]350%type<en> asm_clobbers_list_opt
[7f5566b]351%type<flag> asm_volatile_opt
[cbce272]352%type<en> handler_predicate_opt
[67d4e37]353%type<genexpr> generic_association generic_assoc_list
[51b73452]354
[c11e31c]355// statements
[9bd6105]356%type<sn> statement labeled_statement compound_statement
357%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]358%type<sn> selection_statement if_statement
[6a276a0]359%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]360%type<en> case_value
361%type<sn> case_clause case_value_list case_label case_label_list
[efc8f3e]362%type<sn> iteration_statement jump_statement
[9bd6105]363%type<sn> expression_statement asm_statement
[c453ac4]364%type<sn> with_statement
365%type<en> with_clause_opt
[51d6d6a]366%type<sn> exception_statement handler_clause finally_clause
367%type<catch_kind> handler_key
[b6b3c42]368%type<sn> mutex_statement
[9bd6105]369%type<en> when_clause when_clause_opt waitfor timeout
[135b431]370%type<sn> waitfor_statement
[51d6d6a]371%type<wfs> waitfor_clause
[51b73452]372
[c11e31c]373// declarations
[c0aa336]374%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
375%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
376%type<decl> abstract_parameter_declaration
[51b73452]377
[e307e12]378%type<aggKey> aggregate_key aggregate_data aggregate_control
[d0ffed1]379%type<decl> aggregate_type aggregate_type_nobody
[51b73452]380
[9997fee]381%type<decl> assertion assertion_list assertion_list_opt
[51b73452]382
[25744d2]383%type<en> bit_subrange_size_opt bit_subrange_size
[51b73452]384
[84d58c5]385%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[1f652a7]386%type<decl> vtable vtable_opt default_opt
[51b73452]387
[4040425]388%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]389
390%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]391%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]392
[d0ffed1]393%type<decl> elaborated_type elaborated_type_nobody
[51b73452]394
[d0ffed1]395%type<decl> enumerator_list enum_type enum_type_nobody
[374cb117]396%type<in> enumerator_value_opt
[51b73452]397
[3d56d15b]398%type<decl> external_definition external_definition_list external_definition_list_opt
399
400%type<decl> exception_declaration
[51b73452]401
[e07caa2]402%type<decl> field_declaration_list_opt field_declaration field_declaring_list_opt field_declarator field_abstract_list_opt field_abstract
[679e644]403%type<en> field field_name_list field_name fraction_constants_opt
[51b73452]404
[4d51835]405%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]406
[d3bc0ad]407%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
408%type<decl> identifier_list
[51b73452]409
[c0aa336]410%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
411%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
412%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]413
[c0aa336]414%type<decl> cfa_array_parameter_1st_dimension
[51b73452]415
[679e644]416%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list cfa_field_abstract_list
[c0aa336]417%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]418
[c0aa336]419%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
420%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]421
[40de461]422%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]423
[c0aa336]424%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]425
[b9be000b]426%type<decl> c_declaration static_assert
[c0aa336]427%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]428%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]429
[2a8427c6]430%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]431
[2871210]432%type<decl> paren_identifier paren_type
[51b73452]433
[0da3e2c]434%type<decl> storage_class storage_class_list
[51b73452]435
[d0ffed1]436%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]437
[5a51798]438%type<tclass> type_class new_type_class
[51b73452]439%type<decl> type_declarator type_declarator_name type_declaring_list
440
[84d58c5]441%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
[f9c3100]442%type<decl> typedef_name typedef_declaration typedef_expression
[c0aa336]443
444%type<decl> variable_type_redeclarator type_ptr type_array type_function
445
446%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]447
[84d58c5]448%type<decl> type type_no_function
449%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]450
[284da8c]451%type<en> type_parameters_opt type_list
[51b73452]452
[a16a7ec]453%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[f9c3100]454%type<decl> type_specifier type_specifier_nobody
[51b73452]455
[c0aa336]456%type<decl> variable_declarator variable_ptr variable_array variable_function
457%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]458
[f9c3100]459%type<decl> attribute_list_opt attribute_list attribute attribute_name_list attribute_name
[1db21619]460
[c11e31c]461// initializers
[7fdb94e1]462%type<in> initializer initializer_list_opt initializer_opt
[51b73452]463
[c11e31c]464// designators
[51b73452]465%type<en> designator designator_list designation
466
467
[65d6de4]468// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
469// .---------. matches IF '(' comma_expression ')' statement . (reduce)
470// if ( C ) S1 else S2
471// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]472// Similar issues exit with the waitfor statement.
[51b73452]473
[1efa1e1]474// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
475// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[9fb1367]476%precedence THEN // rule precedence for IF/WAITFOR statement
477%precedence WOR // token precedence for start of WOR in WAITFOR statement
478%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
479%precedence CATCH // token precedence for start of TIMEOUT in WAITFOR statement
480%precedence RECOVER // token precedence for start of TIMEOUT in WAITFOR statement
481%precedence CATCHRESUME // token precedence for start of TIMEOUT in WAITFOR statement
482%precedence FIXUP // token precedence for start of TIMEOUT in WAITFOR statement
483%precedence FINALLY // token precedence for start of TIMEOUT in WAITFOR statement
484%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
485
[51b73452]486
[65d6de4]487// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
488// forall( otype T ) struct Foo { T v; };
489// .-----. matches pointer to function returning a generic (which is impossible without a type)
490// Foo ( *fp )( int );
491// `---' matches start of TYPEGENname '('
[fc20514]492// must be:
[a16a7ec]493// Foo( int ) ( *fp )( int );
[fc20514]494// The same problem occurs here:
495// forall( otype T ) struct Foo { T v; } ( *fp )( int );
496// must be:
497// forall( otype T ) struct Foo { T v; } ( int ) ( *fp )( int );
[65d6de4]498
499// Order of these lines matters (low-to-high precedence).
500%precedence TYPEGENname
[284da8c]501%precedence '}'
[65d6de4]502%precedence '('
503
[c786e1d]504// %precedence RESUME
505// %precedence '{'
506// %precedence ')'
507
[f38e7d7]508%locations // support location tracking for error messages
[930f69e]509
[b87a5ed]510%start translation_unit // parse-tree root
[51b73452]511
512%%
[c11e31c]513//************************* Namespace Management ********************************
514
[3d26610]515// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
516// which are lexically identical.
[c11e31c]517//
[3d26610]518// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
519// foo f; // to allow it to appear in this context
[c11e31c]520//
[3d26610]521// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
522// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
523// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
524// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
525// must be distinguished by the lexical scanner.
[c11e31c]526//
[3d26610]527// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
528// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
529// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
530// each context that introduces a name scope, a new level is created in the type table and that level is popped on
531// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
532// This requires distinguishing between type names that are local to the current declaration scope and those that
533// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]534//
[3d26610]535// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
536// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
537// around the list separator.
538//
539// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
540// push pop push pop
[51b73452]541
542push:
[ab57786]543 { typedefTable.enterScope(); }
[4d51835]544 ;
[51b73452]545
546pop:
[ab57786]547 { typedefTable.leaveScope(); }
[4d51835]548 ;
[51b73452]549
[c11e31c]550//************************* CONSTANTS ********************************
[51b73452]551
552constant:
[de62360d]553 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]554 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]555 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
556 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]557 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
558 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]559 ;
[51b73452]560
[5b2edbc]561quasi_keyword: // CFA
562 TIMEOUT
563 | WOR
[9fb1367]564 | CATCH
565 | RECOVER
566 | CATCHRESUME
567 | FIXUP
568 | FINALLY
[5b2edbc]569 ;
570
[033ff37]571identifier:
[4d51835]572 IDENTIFIER
[5b2edbc]573 | quasi_keyword
[e16eb460]574 ;
575
576identifier_at:
577 identifier
[679e644]578 | '@' // CFA
579 { Token tok = { new string( DeclarationNode::anonymous.newName() ), yylval.tok.loc }; $$ = tok; }
[4d51835]580 ;
[51b73452]581
[ab57786]582string_literal:
583 string_literal_list { $$ = build_constantStr( *$1 ); }
584 ;
585
[b87a5ed]586string_literal_list: // juxtaposed strings are concatenated
[ab57786]587 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]588 | string_literal_list STRINGliteral
589 {
[15697ff]590 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]591 delete $2; // allocated by lexer
[ab57786]592 $$ = $1; // conversion from tok to str
[7bf7fb9]593 }
[4d51835]594 ;
[51b73452]595
[c11e31c]596//************************* EXPRESSIONS ********************************
[51b73452]597
598primary_expression:
[4d51835]599 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]600 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]601 | quasi_keyword
602 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[6e50a6b]603 | TYPEDIMname // CFA, generic length argument
604 // { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( DeclarationNode::newFromTypedef( $1 ) ) ) ); }
605 // { $$ = new ExpressionNode( build_varref( $1 ) ); }
606 { $$ = new ExpressionNode( build_dimensionref( $1 ) ); }
[1b29996]607 | tuple
[4d51835]608 | '(' comma_expression ')'
609 { $$ = $2; }
610 | '(' compound_statement ')' // GCC, lambda expression
[408ab79]611 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast<CompoundStmt *>(maybeMoveBuild<Statement>($2) ) ) ); }
[033ff37]612 | type_name '.' identifier // CFA, nested type
[203c667]613 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[679e644]614 | type_name '.' '[' field_name_list ']' // CFA, nested type / tuple field selector
[203c667]615 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]616 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]617 {
618 // add the missing control expression to the GenericExpr and return it
619 $5->control = maybeMoveBuild<Expression>( $3 );
620 $$ = new ExpressionNode( $5 );
621 }
[c786e1d]622 // | RESUME '(' comma_expression ')'
623 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
624 // | RESUME '(' comma_expression ')' compound_statement
625 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
[afe9e45]626 | IDENTIFIER IDENTIFIER // syntax error
627 {
628 SemanticError( yylloc, ::toString( "Adjacent identifiers are not meaningful in an expression. "
629 "Possible problem is identifier \"", *$1.str,
630 "\" is a misspelled typename or an incorrectly specified type name, "
631 "e.g., missing generic parameter or missing struct/union/enum before typename." ) );
632 $$ = nullptr;
633 }
634 | IDENTIFIER direct_type // syntax error
635 {
636 SemanticError( yylloc, ::toString( "Identifier \"", *$1.str, "\" cannot appear before a type. "
637 "Possible problem is misspelled storage or CV qualifier." ) );
638 $$ = nullptr;
639 }
[24c3b67]640 ;
641
642generic_assoc_list: // C11
[d807ca28]643 generic_association
[24c3b67]644 | generic_assoc_list ',' generic_association
[d807ca28]645 {
646 // steal the association node from the singleton and delete the wrapper
647 $1->associations.splice($1->associations.end(), $3->associations);
648 delete $3;
649 $$ = $1;
650 }
[24c3b67]651 ;
652
653generic_association: // C11
654 type_no_function ':' assignment_expression
[d807ca28]655 {
656 // create a GenericExpr wrapper with one association pair
[408ab79]657 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>( $3 ) } } );
[d807ca28]658 }
[24c3b67]659 | DEFAULT ':' assignment_expression
[408ab79]660 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>( $3 ) } } ); }
[4d51835]661 ;
[51b73452]662
663postfix_expression:
[4d51835]664 primary_expression
[1d71208]665 | postfix_expression '[' assignment_expression ',' tuple_expression_list ']'
666 // Historic, transitional: Disallow commas in subscripts.
667 // Switching to this behaviour may help check if a C compatibilty case uses comma-exprs in subscripts.
668 // Current: Commas in subscripts make tuples.
669 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $5 ) ) )) ) ); }
[7fdb94e1]670 | postfix_expression '[' assignment_expression ']'
[c6b1105]671 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]672 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
673 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
674 // equivalent to the old x[i,j].
[7fdb94e1]675 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[d824715]676 | constant '[' assignment_expression ']' // 3[a], 'a'[a], 3.5[a]
677 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
678 | string_literal '[' assignment_expression ']' // "abc"[3], 3["abc"]
679 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, new ExpressionNode( $1 ), $3 ) ); }
[cbbd8fd7]680 | postfix_expression '{' argument_expression_list_opt '}' // CFA, constructor call
[bd3d9e4]681 {
682 Token fn;
683 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
684 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
685 }
[cbbd8fd7]686 | postfix_expression '(' argument_expression_list_opt ')'
[d1625f8]687 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[948fdef]688 | postfix_expression '`' identifier // CFA, postfix call
[60a8062]689 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]690 | constant '`' identifier // CFA, postfix call
[60a8062]691 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]692 | string_literal '`' identifier // CFA, postfix call
[60a8062]693 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), new ExpressionNode( $1 ) ) ); }
[033ff37]694 | postfix_expression '.' identifier
[d1625f8]695 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]696 | postfix_expression '.' INTEGERconstant // CFA, tuple index
697 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]698 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
699 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[679e644]700 | postfix_expression '.' '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]701 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[e307e12]702 | postfix_expression '.' aggregate_control
[312029a]703 { $$ = new ExpressionNode( build_keyword_cast( $3, $1 ) ); }
[033ff37]704 | postfix_expression ARROW identifier
[ee27df2]705 { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); }
[861799c7]706 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
707 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[679e644]708 | postfix_expression ARROW '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]709 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]710 | postfix_expression ICR
[d1625f8]711 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]712 | postfix_expression DECR
[d1625f8]713 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]714 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]715 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]716 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]717 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[cbbd8fd7]718 | '^' primary_expression '{' argument_expression_list_opt '}' // CFA, destructor call
[097e2b0]719 {
[9706554]720 Token fn;
[ecb27a7]721 fn.str = new string( "^?{}" ); // location undefined
722 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]723 }
[4d51835]724 ;
[51b73452]725
[cbbd8fd7]726argument_expression_list_opt:
[757ffed]727 // empty
728 { $$ = nullptr; }
[e16eb460]729 | argument_expression_list
730 ;
731
732argument_expression_list:
733 argument_expression
[cbbd8fd7]734 | argument_expression_list_opt ',' argument_expression
[4a063df]735 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]736 ;
[51b73452]737
738argument_expression:
[757ffed]739 '@' // CFA, default parameter
[679e644]740 { SemanticError( yylloc, "Default parameter for argument is currently unimplemented." ); $$ = nullptr; }
741 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]742 | assignment_expression
743 ;
[b87a5ed]744
[679e644]745field_name_list: // CFA, tuple field selector
[4d51835]746 field
[4a063df]747 | field_name_list ',' field { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]748 ;
[b87a5ed]749
750field: // CFA, tuple field selector
[faddbd8]751 field_name
[930f69e]752 | FLOATING_DECIMALconstant field
753 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[679e644]754 | FLOATING_DECIMALconstant '[' field_name_list ']'
[7fdb94e1]755 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]756 | field_name '.' field
[bf32bb8]757 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]758 | field_name '.' '[' field_name_list ']'
[7fdb94e1]759 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]760 | field_name ARROW field
[bf32bb8]761 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]762 | field_name ARROW '[' field_name_list ']'
[7fdb94e1]763 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]764 ;
[51b73452]765
[faddbd8]766field_name:
[df22130]767 INTEGERconstant fraction_constants_opt
[8780e30]768 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]769 | FLOATINGconstant fraction_constants_opt
[8780e30]770 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[e16eb460]771 | identifier_at fraction_constants_opt // CFA, allow anonymous fields
[4cb935e]772 {
[84d58c5]773 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
774 }
[1b29996]775 ;
776
[df22130]777fraction_constants_opt:
[1b29996]778 // empty
[8780e30]779 { $$ = nullptr; }
[df22130]780 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]781 {
[930f69e]782 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]783 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
784 }
[faddbd8]785 ;
786
[51b73452]787unary_expression:
[4d51835]788 postfix_expression
[c6b1105]789 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
790 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]791 | constant
[ab57786]792 | string_literal
[d1625f8]793 { $$ = new ExpressionNode( $1 ); }
[4d51835]794 | EXTENSION cast_expression // GCC
[e04ef3a]795 { $$ = $2->set_extension( true ); }
[c6b1105]796 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
797 // { * X; } // dereference X
798 // { * int X; } // CFA declaration of pointer to int
[51e076e]799 | ptrref_operator cast_expression // CFA
[9706554]800 {
801 switch ( $1 ) {
[d9e2280]802 case OperKinds::AddressOf:
[408ab79]803 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) );
[9706554]804 break;
[d9e2280]805 case OperKinds::PointTo:
[d1625f8]806 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]807 break;
[5809461]808 case OperKinds::And:
[408ab79]809 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) ) );
[5809461]810 break;
[9706554]811 default:
812 assert( false );
813 }
814 }
[4d51835]815 | unary_operator cast_expression
[d1625f8]816 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]817 | ICR unary_expression
[d1625f8]818 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]819 | DECR unary_expression
[d1625f8]820 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]821 | SIZEOF unary_expression
[408ab79]822 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[84d58c5]823 | SIZEOF '(' type_no_function ')'
[db70fe4]824 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]825 | ALIGNOF unary_expression // GCC, variable alignment
[408ab79]826 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[a2e0687]827 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]828 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[033ff37]829 | OFFSETOF '(' type_no_function ',' identifier ')'
[d1625f8]830 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[1f652a7]831 | TYPEID '(' type_no_function ')'
832 {
833 SemanticError( yylloc, "typeid name is currently unimplemented." ); $$ = nullptr;
834 // $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) );
835 }
[4d51835]836 ;
[51b73452]837
[dd51906]838ptrref_operator:
[d9e2280]839 '*' { $$ = OperKinds::PointTo; }
840 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]841 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]842 | ANDAND { $$ = OperKinds::And; }
[dd51906]843 ;
844
[51b73452]845unary_operator:
[d9e2280]846 '+' { $$ = OperKinds::UnPlus; }
847 | '-' { $$ = OperKinds::UnMinus; }
848 | '!' { $$ = OperKinds::Neg; }
849 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]850 ;
[51b73452]851
852cast_expression:
[4d51835]853 unary_expression
[84d58c5]854 | '(' type_no_function ')' cast_expression
[d1625f8]855 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[e307e12]856 | '(' aggregate_control '&' ')' cast_expression // CFA
[312029a]857 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[24711a3]858 | '(' aggregate_control '*' ')' cast_expression // CFA
859 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[fae90d5f]860 | '(' VIRTUAL ')' cast_expression // CFA
[408ab79]861 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]862 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[408ab79]863 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $5 ), maybeMoveBuildType( $3 ) ) ); }
[1528a2c]864 | '(' RETURN type_no_function ')' cast_expression // CFA
865 { SemanticError( yylloc, "Return cast is currently unimplemented." ); $$ = nullptr; }
866 | '(' COERCE type_no_function ')' cast_expression // CFA
867 { SemanticError( yylloc, "Coerce cast is currently unimplemented." ); $$ = nullptr; }
868 | '(' qualifier_cast_list ')' cast_expression // CFA
869 { SemanticError( yylloc, "Qualifier cast is currently unimplemented." ); $$ = nullptr; }
[84d58c5]870// | '(' type_no_function ')' tuple
[1b29996]871// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]872 ;
[51b73452]873
[1528a2c]874qualifier_cast_list:
875 cast_modifier type_qualifier_name
876 | cast_modifier MUTEX
877 | qualifier_cast_list cast_modifier type_qualifier_name
878 | qualifier_cast_list cast_modifier MUTEX
879 ;
880
881cast_modifier:
882 '-'
883 | '+'
884 ;
885
[994d080]886exponential_expression:
[4d51835]887 cast_expression
[994d080]888 | exponential_expression '\\' cast_expression
[e5f2a67]889 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]890 ;
891
892multiplicative_expression:
893 exponential_expression
894 | multiplicative_expression '*' exponential_expression
[d1625f8]895 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]896 | multiplicative_expression '/' exponential_expression
[d1625f8]897 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]898 | multiplicative_expression '%' exponential_expression
[d1625f8]899 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]900 ;
[51b73452]901
902additive_expression:
[4d51835]903 multiplicative_expression
904 | additive_expression '+' multiplicative_expression
[d1625f8]905 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]906 | additive_expression '-' multiplicative_expression
[d1625f8]907 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]908 ;
[51b73452]909
910shift_expression:
[4d51835]911 additive_expression
912 | shift_expression LS additive_expression
[d1625f8]913 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]914 | shift_expression RS additive_expression
[d1625f8]915 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]916 ;
[51b73452]917
918relational_expression:
[4d51835]919 shift_expression
920 | relational_expression '<' shift_expression
[d1625f8]921 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]922 | relational_expression '>' shift_expression
[d1625f8]923 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]924 | relational_expression LE shift_expression
[d1625f8]925 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]926 | relational_expression GE shift_expression
[d1625f8]927 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]928 ;
[51b73452]929
930equality_expression:
[4d51835]931 relational_expression
932 | equality_expression EQ relational_expression
[d1625f8]933 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]934 | equality_expression NE relational_expression
[d1625f8]935 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]936 ;
[51b73452]937
938AND_expression:
[4d51835]939 equality_expression
940 | AND_expression '&' equality_expression
[d1625f8]941 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]942 ;
[51b73452]943
944exclusive_OR_expression:
[4d51835]945 AND_expression
946 | exclusive_OR_expression '^' AND_expression
[d1625f8]947 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]948 ;
[51b73452]949
950inclusive_OR_expression:
[4d51835]951 exclusive_OR_expression
952 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]953 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]954 ;
[51b73452]955
956logical_AND_expression:
[4d51835]957 inclusive_OR_expression
958 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]959 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]960 ;
[51b73452]961
962logical_OR_expression:
[4d51835]963 logical_AND_expression
964 | logical_OR_expression OROR logical_AND_expression
[d1625f8]965 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]966 ;
[51b73452]967
968conditional_expression:
[4d51835]969 logical_OR_expression
970 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]971 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]972 // FIX ME: computes $1 twice
[4d51835]973 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]974 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]975 ;
[51b73452]976
977constant_expression:
[4d51835]978 conditional_expression
979 ;
[51b73452]980
981assignment_expression:
[4d51835]982 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
983 conditional_expression
984 | unary_expression assignment_operator assignment_expression
[9867cdb]985 {
[25744d2]986// if ( $2 == OperKinds::AtAssn ) {
987// SemanticError( yylloc, "C @= assignment is currently unimplemented." ); $$ = nullptr;
988// } else {
[9867cdb]989 $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) );
[25744d2]990// } // if
[9867cdb]991 }
[7fdb94e1]992 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]993 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]994 ;
[51b73452]995
996assignment_expression_opt:
[4d51835]997 // empty
[d1625f8]998 { $$ = nullptr; }
[4d51835]999 | assignment_expression
1000 ;
[b87a5ed]1001
[9706554]1002assignment_operator:
[f9c3100]1003 simple_assignment_operator
1004 | compound_assignment_operator
1005 ;
1006
1007simple_assignment_operator:
[d9e2280]1008 '=' { $$ = OperKinds::Assign; }
[f9c3100]1009 | ATassign { $$ = OperKinds::AtAssn; } // CFA
1010 ;
1011
1012compound_assignment_operator:
1013 EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]1014 | MULTassign { $$ = OperKinds::MulAssn; }
1015 | DIVassign { $$ = OperKinds::DivAssn; }
1016 | MODassign { $$ = OperKinds::ModAssn; }
1017 | PLUSassign { $$ = OperKinds::PlusAssn; }
1018 | MINUSassign { $$ = OperKinds::MinusAssn; }
1019 | LSassign { $$ = OperKinds::LSAssn; }
1020 | RSassign { $$ = OperKinds::RSAssn; }
1021 | ANDassign { $$ = OperKinds::AndAssn; }
1022 | ERassign { $$ = OperKinds::ERAssn; }
1023 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]1024 ;
[9706554]1025
[b87a5ed]1026tuple: // CFA, tuple
[de62360d]1027 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]1028 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]1029// '[' ']'
1030// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]1031// | '[' push assignment_expression pop ']'
[1b29996]1032// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]1033 '[' ',' tuple_expression_list ']'
1034 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
1035 | '[' push assignment_expression pop ',' tuple_expression_list ']'
[4a063df]1036 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $6 ) ) )); }
[4d51835]1037 ;
[51b73452]1038
1039tuple_expression_list:
[0a6d8204]1040 assignment_expression
1041 | '@' // CFA
1042 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
1043 | tuple_expression_list ',' assignment_expression
[4a063df]1044 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[0a6d8204]1045 | tuple_expression_list ',' '@'
1046 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
[4d51835]1047 ;
[51b73452]1048
1049comma_expression:
[4d51835]1050 assignment_expression
[9706554]1051 | comma_expression ',' assignment_expression
[408ab79]1052 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1053 ;
[51b73452]1054
1055comma_expression_opt:
[4d51835]1056 // empty
[58dd019]1057 { $$ = nullptr; }
[4d51835]1058 | comma_expression
1059 ;
[51b73452]1060
[c11e31c]1061//*************************** STATEMENTS *******************************
[51b73452]1062
1063statement:
[4d51835]1064 labeled_statement
1065 | compound_statement
[c0a33d2]1066 | expression_statement
[4d51835]1067 | selection_statement
1068 | iteration_statement
1069 | jump_statement
[8b47e50]1070 | with_statement
[b6b3c42]1071 | mutex_statement
[5b2edbc]1072 | waitfor_statement
[4d51835]1073 | exception_statement
[2a8427c6]1074 | enable_disable_statement
[fae90d5f]1075 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]1076 | asm_statement
[61fc4f6]1077 | DIRECTIVE
[6d539f83]1078 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]1079 ;
[51b73452]1080
1081labeled_statement:
[033ff37]1082 // labels cannot be identifiers 0 or 1
[44a81853]1083 identifier_or_type_name ':' attribute_list_opt statement
[6d01d89]1084 { $$ = $4->add_label( $1, $3 ); }
[afe9e45]1085 | identifier_or_type_name ':' attribute_list_opt error // syntax error
1086 {
1087 SemanticError( yylloc, ::toString( "Label \"", *$1.str, "\" must be associated with a statement, "
1088 "where a declaration, case, or default is not a statement. "
1089 "Move the label or terminate with a semi-colon." ) );
1090 $$ = nullptr;
1091 }
[4d51835]1092 ;
[51b73452]1093
1094compound_statement:
[4d51835]1095 '{' '}'
[e82aa9df]1096 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]1097 | '{' push
[5e25953]1098 local_label_declaration_opt // GCC, local labels appear at start of block
[9bd6105]1099 statement_decl_list // C99, intermix declarations and statements
[c0aa336]1100 pop '}'
[35718a9]1101 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]1102 ;
[b87a5ed]1103
[9bd6105]1104statement_decl_list: // C99
1105 statement_decl
[35718a9]1106 | statement_decl_list statement_decl
[6d01d89]1107 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1108 ;
[51b73452]1109
[9bd6105]1110statement_decl:
[4d51835]1111 declaration // CFA, new & old style declarations
[e82aa9df]1112 { $$ = new StatementNode( $1 ); }
[4d51835]1113 | EXTENSION declaration // GCC
[6d01d89]1114 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[4d51835]1115 | function_definition
[e82aa9df]1116 { $$ = new StatementNode( $1 ); }
[c0aa336]1117 | EXTENSION function_definition // GCC
[6d01d89]1118 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[35718a9]1119 | statement
[4d51835]1120 ;
[51b73452]1121
[9bd6105]1122statement_list_nodecl:
[4d51835]1123 statement
[9bd6105]1124 | statement_list_nodecl statement
[6d01d89]1125 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[afe9e45]1126 | statement_list_nodecl error // syntax error
1127 { SemanticError( yylloc, "Declarations only allowed at the start of the switch body, i.e., after the '{'." ); $$ = nullptr; }
[4d51835]1128 ;
[51b73452]1129
1130expression_statement:
[4d51835]1131 comma_expression_opt ';'
[e82aa9df]1132 { $$ = new StatementNode( build_expr( $1 ) ); }
[05c941a]1133 | MUTEX '(' ')' comma_expression ';'
1134 { $$ = new StatementNode( build_mutex( nullptr, new StatementNode( build_expr( $4 ) ) ) ); }
[4d51835]1135 ;
[51b73452]1136
1137selection_statement:
[3d26610]1138 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1139 // the inherent S/R conflict with THEN/ELSE.
1140 push if_statement pop
1141 { $$ = $2; }
[4cc585b]1142 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1143 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1144 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1145 {
[6a276a0]1146 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1147 // The semantics of the declaration list is changed to include associated initialization, which is performed
1148 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1149 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1150 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1151 // statement.
[a7741435]1152 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1153 }
[afe9e45]1154 | SWITCH '(' comma_expression ')' '{' error '}' // CFA, syntax error
1155 { SemanticError( yylloc, "Only declarations can appear before the list of case clauses." ); $$ = nullptr; }
[4d51835]1156 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1157 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1158 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1159 {
[6a276a0]1160 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1161 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1162 }
[afe9e45]1163 | CHOOSE '(' comma_expression ')' '{' error '}' // CFA, syntax error
1164 { SemanticError( yylloc, "Only declarations can appear before the list of case clauses." ); $$ = nullptr; }
[4d51835]1165 ;
[b87a5ed]1166
[3d26610]1167if_statement:
[473d1da0]1168 IF '(' conditional_declaration ')' statement %prec THEN
[3d26610]1169 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1170 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[473d1da0]1171 | IF '(' conditional_declaration ')' statement ELSE statement
[a025ea8]1172 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1173 ;
1174
[473d1da0]1175conditional_declaration:
[35718a9]1176 comma_expression
[473d1da0]1177 { $$ = new CondCtl( nullptr, $1 ); }
[35718a9]1178 | c_declaration // no semi-colon
[473d1da0]1179 { $$ = new CondCtl( $1, nullptr ); }
[35718a9]1180 | cfa_declaration // no semi-colon
[473d1da0]1181 { $$ = new CondCtl( $1, nullptr ); }
[6d49ea3]1182 | declaration comma_expression // semi-colon separated
[473d1da0]1183 { $$ = new CondCtl( $1, $2 ); }
[936e9f4]1184 ;
1185
[de62360d]1186// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1187// clause allows a list of values and subranges.
[b87a5ed]1188
1189case_value: // CFA
[4d51835]1190 constant_expression { $$ = $1; }
1191 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[408ab79]1192 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1193 | subrange // CFA, subrange
1194 ;
[b87a5ed]1195
1196case_value_list: // CFA
[e82aa9df]1197 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1198 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1199 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1200 ;
[b87a5ed]1201
1202case_label: // CFA
[afe9e45]1203 CASE error // syntax error
1204 { SemanticError( yylloc, "Missing case list after case." ); $$ = nullptr; }
[5c216b4]1205 | CASE case_value_list ':' { $$ = $2; }
[afe9e45]1206 | CASE case_value_list error // syntax error
1207 { SemanticError( yylloc, "Missing colon after case list." ); $$ = nullptr; }
[e82aa9df]1208 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1209 // A semantic check is required to ensure only one default clause per switch/choose statement.
[afe9e45]1210 | DEFAULT error // syntax error
1211 { SemanticError( yylloc, "Missing colon after default." ); $$ = nullptr; }
[4d51835]1212 ;
[b87a5ed]1213
1214case_label_list: // CFA
[4d51835]1215 case_label
[1d4580a]1216 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1217 ;
[b87a5ed]1218
1219case_clause: // CFA
[a025ea8]1220 case_label_list statement { $$ = $1->append_last_case( maybe_build_compound( $2 ) ); }
[4d51835]1221 ;
[b87a5ed]1222
1223switch_clause_list_opt: // CFA
[4d51835]1224 // empty
[58dd019]1225 { $$ = nullptr; }
[4d51835]1226 | switch_clause_list
1227 ;
[b87a5ed]1228
1229switch_clause_list: // CFA
[9bd6105]1230 case_label_list statement_list_nodecl
[e82aa9df]1231 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1232 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1233 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1234 ;
[b87a5ed]1235
[51b73452]1236iteration_statement:
[5695645]1237 WHILE '(' ')' statement %prec THEN // CFA => while ( 1 )
[473d1da0]1238 { $$ = new StatementNode( build_while( new CondCtl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) ); }
[5695645]1239 | WHILE '(' ')' statement ELSE statement // CFA
[86b8d16]1240 {
1241 $$ = new StatementNode( build_while( new CondCtl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) );
1242 SemanticWarning( yylloc, Warning::SuperfluousElse );
1243 }
[473d1da0]1244 | WHILE '(' conditional_declaration ')' statement %prec THEN
[efc8f3e]1245 { $$ = new StatementNode( build_while( $3, maybe_build_compound( $5 ) ) ); }
[473d1da0]1246 | WHILE '(' conditional_declaration ')' statement ELSE statement // CFA
[3b0bc16]1247 { $$ = new StatementNode( build_while( $3, maybe_build_compound( $5 ), $7 ) ); }
[f271bdd]1248 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[a025ea8]1249 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) ); }
[5695645]1250 | DO statement WHILE '(' ')' ELSE statement // CFA
[86b8d16]1251 {
1252 $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) );
1253 SemanticWarning( yylloc, Warning::SuperfluousElse );
1254 }
1255 | DO statement WHILE '(' comma_expression ')' ';'
[efc8f3e]1256 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
1257 | DO statement WHILE '(' comma_expression ')' ELSE statement // CFA
[3b0bc16]1258 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ), $8 ) ); }
[86b8d16]1259 | FOR '(' ')' statement %prec THEN // CFA => for ( ;; )
[a025ea8]1260 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[86b8d16]1261 | FOR '(' ')' statement ELSE statement // CFA
1262 {
1263 $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) );
1264 SemanticWarning( yylloc, Warning::SuperfluousElse );
1265 }
[efc8f3e]1266 | FOR '(' for_control_expression_list ')' statement %prec THEN
1267 { $$ = new StatementNode( build_for( $3, maybe_build_compound( $5 ) ) ); }
1268 | FOR '(' for_control_expression_list ')' statement ELSE statement // CFA
[3b0bc16]1269 { $$ = new StatementNode( build_for( $3, maybe_build_compound( $5 ), $7 ) ); }
[a73c16e]1270 ;
1271
[6d01d89]1272for_control_expression_list:
1273 for_control_expression
1274 | for_control_expression_list ':' for_control_expression
[67d4e37]1275 // ForCtrl + ForCtrl:
1276 // init + init => multiple declaration statements that are hoisted
1277 // condition + condition => (expression) && (expression)
1278 // change + change => (expression), (expression)
1279 {
1280 $1->init->set_last( $3->init );
1281 if ( $1->condition ) {
1282 if ( $3->condition ) {
1283 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1284 } // if
1285 } else $1->condition = $3->condition;
1286 if ( $1->change ) {
1287 if ( $3->change ) {
1288 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1289 } // if
1290 } else $1->change = $3->change;
1291 $$ = $1;
1292 }
[6d01d89]1293 ;
1294
[51b73452]1295for_control_expression:
[6d01d89]1296 ';' comma_expression_opt ';' comma_expression_opt
1297 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1298 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1299 { $$ = new ForCtrl( $1, $3, $5 ); }
1300 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1301 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1302
[6d01d89]1303 | comma_expression // CFA
[f1aeede]1304 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1305 OperKinds::LThan, $1->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1306 | '=' comma_expression // CFA
[9853d9b0]1307 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1308 OperKinds::LEThan, $2->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1309 | comma_expression inclexcl comma_expression // CFA
[ee27df2]1310 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1311 | comma_expression inclexcl comma_expression '~' comma_expression // CFA
[cc22003]1312 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[cbbd8fd7]1313 | comma_expression ';' // CFA
1314 { $$ = forCtrl( new ExpressionNode( build_constantInteger( *new string( "0u" ) ) ), $1, nullptr, OperKinds::LThan, nullptr, nullptr ); }
[f1aeede]1315 | comma_expression ';' comma_expression // CFA
1316 { $$ = forCtrl( $3, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1317 OperKinds::LThan, $3->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1318 | comma_expression ';' '=' comma_expression // CFA
[332bd33]1319 { $$ = forCtrl( $4, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1320 OperKinds::LEThan, $4->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1321 | comma_expression ';' comma_expression inclexcl comma_expression // CFA
[f1aeede]1322 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1323 | comma_expression ';' comma_expression inclexcl comma_expression '~' comma_expression // CFA
[f1aeede]1324 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, $7 ); }
[67d4e37]1325
[ca33b15]1326 | comma_expression ';' TYPEDEFname // CFA, array type
1327 {
1328 SemanticError( yylloc, "Array interator is currently unimplemented." ); $$ = nullptr;
1329 $$ = forCtrl( new ExpressionNode( build_varref( $3 ) ), $1, nullptr, OperKinds::Range, nullptr, nullptr );
1330 }
[98337569]1331
[67d4e37]1332 // There is a S/R conflicit if ~ and -~ are factored out.
1333 | comma_expression ';' comma_expression '~' '@' // CFA
1334 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1335 | comma_expression ';' comma_expression ErangeDown '@' // CFA
1336 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[2d2df9f]1337 | comma_expression ';' comma_expression '~' '@' '~' comma_expression // CFA
1338 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, $7 ); }
[1b54b54]1339 | comma_expression ';' comma_expression ErangeDown '@' '~' comma_expression // CFA
1340 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, $7 ); }
[2d2df9f]1341 | comma_expression ';' comma_expression '~' '@' '~' '@' // CFA
1342 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, nullptr ); }
[d1625f8]1343 ;
[51b73452]1344
[cc22003]1345inclexcl:
1346 '~'
1347 { $$ = OperKinds::LThan; }
[d69f4bb4]1348 | ErangeUpEq
[cc22003]1349 { $$ = OperKinds::LEThan; }
[d69f4bb4]1350 | ErangeDown
1351 { $$ = OperKinds::GThan; }
1352 | ErangeDownEq
1353 { $$ = OperKinds::GEThan; }
[cc22003]1354 ;
1355
[51b73452]1356jump_statement:
[44a81853]1357 GOTO identifier_or_type_name ';'
[ab57786]1358 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1359 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1360 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1361 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1362 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1363 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
[ec3f9c8]1364 | fall_through_name ';' // CFA
[6a276a0]1365 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
[ec3f9c8]1366 | fall_through_name identifier_or_type_name ';' // CFA
[6a276a0]1367 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1368 | fall_through_name DEFAULT ';' // CFA
1369 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1370 | CONTINUE ';'
[de62360d]1371 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1372 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1373 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1374 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1375 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1376 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1377 | BREAK ';'
[de62360d]1378 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1379 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1380 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1381 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1382 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1383 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1384 | RETURN comma_expression_opt ';'
[e82aa9df]1385 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1386 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1387 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1388 | SUSPEND ';'
[427854b]1389 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1390 | SUSPEND compound_statement
[427854b]1391 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1392 | SUSPEND COROUTINE ';'
[427854b]1393 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1394 | SUSPEND COROUTINE compound_statement
[427854b]1395 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1396 | SUSPEND GENERATOR ';'
[427854b]1397 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1398 | SUSPEND GENERATOR compound_statement
[427854b]1399 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1400 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1401 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1402 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1403 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1404 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1405 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1406 ;
[51b73452]1407
[6a276a0]1408fall_through_name: // CFA
1409 FALLTHRU
1410 | FALLTHROUGH
1411 ;
1412
[8b47e50]1413with_statement:
[5b2edbc]1414 WITH '(' tuple_expression_list ')' statement
[e16eb460]1415 { $$ = new StatementNode( build_with( $3, $5 ) ); }
[5b2edbc]1416 ;
1417
[b6b3c42]1418// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1419mutex_statement:
[e16eb460]1420 MUTEX '(' argument_expression_list ')' statement
[6cebfef]1421 { $$ = new StatementNode( build_mutex( $3, $5 ) ); }
[b6b3c42]1422 ;
1423
[51d6d6a]1424when_clause:
[6a276a0]1425 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1426 ;
1427
[5b2edbc]1428when_clause_opt:
1429 // empty
[135b431]1430 { $$ = nullptr; }
[51d6d6a]1431 | when_clause
[5b2edbc]1432 ;
1433
1434waitfor:
[713926ca]1435 WAITFOR '(' cast_expression ')'
1436 { $$ = $3; }
[cbbd8fd7]1437// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1438// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1439 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1440 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1441 ;
1442
1443cast_expression_list:
1444 cast_expression
1445 | cast_expression_list ',' cast_expression
[a491a3c]1446 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1447 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1448 ;
1449
1450timeout:
[6a276a0]1451 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1452 ;
1453
1454waitfor_clause:
[51d6d6a]1455 when_clause_opt waitfor statement %prec THEN
[a025ea8]1456 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1457 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1458 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1459 | when_clause_opt timeout statement %prec THEN
[a025ea8]1460 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1461 | when_clause_opt ELSE statement
[a025ea8]1462 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[afe9e45]1463 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
1464 | when_clause_opt timeout statement WOR ELSE statement // syntax error
[713926ca]1465 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1466 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1467 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1468 ;
1469
1470waitfor_statement:
[51d6d6a]1471 when_clause_opt waitfor statement %prec THEN
[135b431]1472 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1473 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1474 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1475 ;
1476
[51b73452]1477exception_statement:
[9fb1367]1478 TRY compound_statement handler_clause %prec THEN
[e82aa9df]1479 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1480 | TRY compound_statement finally_clause
[e82aa9df]1481 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1482 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1483 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1484 ;
[51b73452]1485
1486handler_clause:
[098f7ff]1487 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1488 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1489 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1490 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1491 ;
1492
1493handler_predicate_opt:
[7fdb94e1]1494 // empty
[cbce272]1495 { $$ = nullptr; }
[6a276a0]1496 | ';' conditional_expression { $$ = $2; }
[307a732]1497 ;
1498
1499handler_key:
[6a276a0]1500 CATCH { $$ = CatchStmt::Terminate; }
[9fb1367]1501 | RECOVER { $$ = CatchStmt::Terminate; }
[6a276a0]1502 | CATCHRESUME { $$ = CatchStmt::Resume; }
[9fb1367]1503 | FIXUP { $$ = CatchStmt::Resume; }
[4d51835]1504 ;
[51b73452]1505
1506finally_clause:
[6a276a0]1507 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1508 ;
[51b73452]1509
1510exception_declaration:
[d0ffed1]1511 // No SUE declaration in parameter list.
1512 type_specifier_nobody
1513 | type_specifier_nobody declarator
[c0a33d2]1514 { $$ = $2->addType( $1 ); }
[d0ffed1]1515 | type_specifier_nobody variable_abstract_declarator
[4d51835]1516 { $$ = $2->addType( $1 ); }
[033ff37]1517 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1518 { $$ = $1->addName( $2 ); }
[c0aa336]1519 | cfa_abstract_declarator_tuple // CFA
[4d51835]1520 ;
[51b73452]1521
[2a8427c6]1522enable_disable_statement:
1523 enable_disable_key identifier_list compound_statement
1524 ;
1525
1526enable_disable_key:
1527 ENABLE
1528 | DISABLE
1529 ;
1530
[51b73452]1531asm_statement:
[ab57786]1532 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1533 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1534 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1535 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1536 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1537 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1538 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1539 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1540 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1541 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1542 ;
1543
1544asm_volatile_opt: // GCC
1545 // empty
1546 { $$ = false; }
1547 | VOLATILE
1548 { $$ = true; }
[4d51835]1549 ;
[b87a5ed]1550
1551asm_operands_opt: // GCC
[4d51835]1552 // empty
[58dd019]1553 { $$ = nullptr; } // use default argument
[4d51835]1554 | asm_operands_list
1555 ;
[b87a5ed]1556
1557asm_operands_list: // GCC
[4d51835]1558 asm_operand
1559 | asm_operands_list ',' asm_operand
[4a063df]1560 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1561 ;
[b87a5ed]1562
1563asm_operand: // GCC
[ab57786]1564 string_literal '(' constant_expression ')'
[408ab79]1565 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1566 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1567 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1568 ;
1569
[4e06c1e]1570asm_clobbers_list_opt: // GCC
[7f5566b]1571 // empty
[58dd019]1572 { $$ = nullptr; } // use default argument
[ab57786]1573 | string_literal
[d1625f8]1574 { $$ = new ExpressionNode( $1 ); }
[ab57786]1575 | asm_clobbers_list_opt ',' string_literal
[4a063df]1576 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1577 ;
[b87a5ed]1578
[7f5566b]1579label_list:
[033ff37]1580 identifier
[ab57786]1581 {
1582 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1583 delete $1; // allocated by lexer
1584 }
[033ff37]1585 | label_list ',' identifier
[ab57786]1586 {
1587 $$ = $1; $1->labels.push_back( *$3 );
1588 delete $3; // allocated by lexer
1589 }
[4d51835]1590 ;
[51b73452]1591
[c11e31c]1592//******************************* DECLARATIONS *********************************
[51b73452]1593
[b87a5ed]1594declaration_list_opt: // used at beginning of switch statement
[35718a9]1595 // empty
[58dd019]1596 { $$ = nullptr; }
[4d51835]1597 | declaration_list
1598 ;
[51b73452]1599
1600declaration_list:
[4d51835]1601 declaration
[35718a9]1602 | declaration_list declaration
1603 { $$ = $1->appendList( $2 ); }
[4d51835]1604 ;
[51b73452]1605
[407bde5]1606KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1607 // empty
[58dd019]1608 { $$ = nullptr; }
[35718a9]1609 | KR_parameter_list
[4d51835]1610 ;
[51b73452]1611
[35718a9]1612KR_parameter_list:
[4cc585b]1613 push c_declaration pop ';'
1614 { $$ = $2; }
[35718a9]1615 | KR_parameter_list push c_declaration pop ';'
[4d51835]1616 { $$ = $1->appendList( $3 ); }
1617 ;
[b87a5ed]1618
[51b1202]1619local_label_declaration_opt: // GCC, local label
[4d51835]1620 // empty
[51b1202]1621 | local_label_declaration_list
[4d51835]1622 ;
[b87a5ed]1623
[51b1202]1624local_label_declaration_list: // GCC, local label
1625 LABEL local_label_list ';'
1626 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1627 ;
[b87a5ed]1628
[51b1202]1629local_label_list: // GCC, local label
[033ff37]1630 identifier_or_type_name
1631 | local_label_list ',' identifier_or_type_name
[4d51835]1632 ;
[b87a5ed]1633
[936e9f4]1634declaration: // old & new style declarations
[35718a9]1635 c_declaration ';'
[d8454b9]1636 {
1637 // printf( "C_DECLARATION1 %p %s\n", $$, $$->name ? $$->name->c_str() : "(nil)" );
1638 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
1639 // printf( "\tattr %s\n", attr->name.c_str() );
1640 // } // for
1641 }
[35718a9]1642 | cfa_declaration ';' // CFA
[b47b827]1643 | static_assert // C11
[4d51835]1644 ;
[b87a5ed]1645
[b9be000b]1646static_assert:
1647 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1648 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1649 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1650 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1651
[de62360d]1652// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1653// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1654// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1655// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1656// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1657// block, but cannot be mixed within a specific declaration.
[c11e31c]1658//
[b87a5ed]1659// CFA C
1660// [10] int x; int x[10]; // array of 10 integers
1661// [10] * char y; char *y[10]; // array of 10 pointers to char
1662
[c0aa336]1663cfa_declaration: // CFA
[4cc585b]1664 cfa_variable_declaration
1665 | cfa_typedef_declaration
1666 | cfa_function_declaration
1667 | type_declaring_list
[2501ae5]1668 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1669 | trait_specifier
[4d51835]1670 ;
[b87a5ed]1671
[c0aa336]1672cfa_variable_declaration: // CFA
1673 cfa_variable_specifier initializer_opt
[7fdb94e1]1674 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1675 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1676 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1677 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1678 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1679 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1680 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1681 ;
[b87a5ed]1682
[c0aa336]1683cfa_variable_specifier: // CFA
[de62360d]1684 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1685 // storage-class
[c0aa336]1686 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1687 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1688 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1689 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1690 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1691 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1692 ;
[b87a5ed]1693
[c0aa336]1694cfa_function_declaration: // CFA
1695 cfa_function_specifier
1696 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1697 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1698 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1699 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1700 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1701 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1702 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1703 {
[481115f]1704 // Append the return type at the start (left-hand-side) to each identifier in the list.
1705 DeclarationNode * ret = new DeclarationNode;
1706 ret->type = maybeClone( $1->type->base );
[40de461]1707 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1708 }
1709 ;
[b87a5ed]1710
[c0aa336]1711cfa_function_specifier: // CFA
[40de461]1712// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1713// {
1714// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1715// }
[40de461]1716// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1717// {
1718// typedefTable.setNextIdentifier( *$5 );
1719// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1720// }
[40de461]1721// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1722// {
1723// typedefTable.setNextIdentifier( *$5 );
1724// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1725// }
1726// | '[' ']' typegen_name
1727 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1728 //
[40de461]1729 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1730 // '[' ']' type_specifier
1731 //
[2871210]1732 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1733 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1734 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1735 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1736 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1737 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1738 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1739 ;
[b87a5ed]1740
[c0aa336]1741cfa_function_return: // CFA
[c0a33d2]1742 '[' push cfa_parameter_list pop ']'
1743 { $$ = DeclarationNode::newTuple( $3 ); }
1744 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1745 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1746 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1747 ;
[b87a5ed]1748
[c0aa336]1749cfa_typedef_declaration: // CFA
1750 TYPEDEF cfa_variable_specifier
[4d51835]1751 {
[ecae5860]1752 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1753 $$ = $2->addTypedef();
1754 }
[c0aa336]1755 | TYPEDEF cfa_function_specifier
[4d51835]1756 {
[ecae5860]1757 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1758 $$ = $2->addTypedef();
1759 }
[033ff37]1760 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1761 {
[ecae5860]1762 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1763 $$ = $1->appendList( $1->cloneType( $5 ) );
1764 }
1765 ;
[b87a5ed]1766
[de62360d]1767// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1768// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1769
1770typedef_declaration:
[4d51835]1771 TYPEDEF type_specifier declarator
1772 {
[ecae5860]1773 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1774 $$ = $3->addType( $2 )->addTypedef();
1775 }
1776 | typedef_declaration pop ',' push declarator
1777 {
[ecae5860]1778 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1779 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1780 }
[de62360d]1781 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1782 {
[ecae5860]1783 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1784 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1785 }
1786 | type_specifier TYPEDEF declarator
1787 {
[ecae5860]1788 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1789 $$ = $3->addType( $1 )->addTypedef();
1790 }
1791 | type_specifier TYPEDEF type_qualifier_list declarator
1792 {
[ecae5860]1793 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1794 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1795 }
1796 ;
[b87a5ed]1797
[721f17a]1798typedef_expression:
[25744d2]1799 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1800 TYPEDEF identifier '=' assignment_expression
[4d51835]1801 {
[25744d2]1802 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1803 }
[033ff37]1804 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1805 {
[25744d2]1806 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1807 }
1808 ;
[51b73452]1809
[c0aa336]1810c_declaration:
[4cc585b]1811 declaration_specifier declaring_list
[7fdb94e1]1812 { $$ = distAttr( $1, $2 ); }
[4cc585b]1813 | typedef_declaration
[25744d2]1814 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1815 | sue_declaration_specifier
[4d51835]1816 ;
[51b73452]1817
1818declaring_list:
[de62360d]1819 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1820 // storage-class
[c0aa336]1821 declarator asm_name_opt initializer_opt
[7fdb94e1]1822 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1823 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1824 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1825 ;
[b87a5ed]1826
1827declaration_specifier: // type specifier + storage class
[4d51835]1828 basic_declaration_specifier
1829 | sue_declaration_specifier
[84d58c5]1830 | type_declaration_specifier
[4d51835]1831 ;
[b87a5ed]1832
[d0ffed1]1833declaration_specifier_nobody: // type specifier + storage class - {...}
1834 // Preclude SUE declarations in restricted scopes:
1835 //
1836 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1837 //
1838 // because it is impossible to call f due to name equivalence.
1839 basic_declaration_specifier
1840 | sue_declaration_specifier_nobody
[84d58c5]1841 | type_declaration_specifier
[d0ffed1]1842 ;
1843
1844type_specifier: // type specifier
[4d51835]1845 basic_type_specifier
1846 | sue_type_specifier
[d8454b9]1847 {
1848 // printf( "sue_type_specifier2 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
1849 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
1850 // printf( "\tattr %s\n", attr->name.c_str() );
1851 // } // for
1852 }
[84d58c5]1853 | type_type_specifier
[4d51835]1854 ;
[b87a5ed]1855
[d0ffed1]1856type_specifier_nobody: // type specifier - {...}
1857 // Preclude SUE declarations in restricted scopes:
1858 //
1859 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1860 //
1861 // because it is impossible to call f due to name equivalence.
1862 basic_type_specifier
1863 | sue_type_specifier_nobody
[84d58c5]1864 | type_type_specifier
[d0ffed1]1865 ;
1866
[b87a5ed]1867type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1868 // empty
[58dd019]1869 { $$ = nullptr; }
[4d51835]1870 | type_qualifier_list
1871 ;
[51b73452]1872
1873type_qualifier_list:
[de62360d]1874 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1875 //
[de62360d]1876 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1877 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1878 // appeared only once.
[4d51835]1879 type_qualifier
1880 | type_qualifier_list type_qualifier
1881 { $$ = $1->addQualifiers( $2 ); }
1882 ;
[51b73452]1883
1884type_qualifier:
[4d51835]1885 type_qualifier_name
[5e25953]1886 | attribute // trick handles most atrribute locations
[4d51835]1887 ;
[51b73452]1888
1889type_qualifier_name:
[4d51835]1890 CONST
[738e304]1891 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1892 | RESTRICT
[738e304]1893 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1894 | VOLATILE
[738e304]1895 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1896 | ATOMIC
[738e304]1897 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1898 | forall
1899 ;
1900
1901forall:
[35718a9]1902 FORALL '(' type_parameter_list ')' // CFA
1903 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1904 ;
[51b73452]1905
1906declaration_qualifier_list:
[4d51835]1907 storage_class_list
[de62360d]1908 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1909 { $$ = $1->addQualifiers( $2 ); }
1910 | declaration_qualifier_list type_qualifier_list storage_class_list
1911 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1912 ;
[51b73452]1913
1914storage_class_list:
[de62360d]1915 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1916 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1917 //
[de62360d]1918 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1919 // specifiers in a declaration.
[4d51835]1920 storage_class
1921 | storage_class_list storage_class
1922 { $$ = $1->addQualifiers( $2 ); }
1923 ;
[51b73452]1924
1925storage_class:
[4d51835]1926 EXTERN
[68fe077a]1927 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1928 | STATIC
[68fe077a]1929 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1930 | AUTO
[68fe077a]1931 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1932 | REGISTER
[68fe077a]1933 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1934 | THREADLOCAL // C11
[68fe077a]1935 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1936 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1937 | INLINE // C99
[ddfd945]1938 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1939 | FORTRAN // C99
[ddfd945]1940 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1941 | NORETURN // C11
[ddfd945]1942 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1943 ;
[51b73452]1944
1945basic_type_name:
[201aeb9]1946 VOID
[4d51835]1947 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1948 | BOOL // C99
1949 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1950 | CHAR
1951 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1952 | INT
1953 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1954 | INT128
1955 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1956 | UINT128
1957 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1958 | FLOAT
1959 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1960 | DOUBLE
1961 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1962 | uuFLOAT80
1963 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1964 | uuFLOAT128
1965 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1966 | uFLOAT16
1967 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1968 | uFLOAT32
1969 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1970 | uFLOAT32X
1971 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1972 | uFLOAT64
1973 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1974 | uFLOAT64X
1975 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1976 | uFLOAT128
1977 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[15f769c]1978 | DECIMAL32
1979 { SemanticError( yylloc, "_Decimal32 is currently unimplemented." ); $$ = nullptr; }
1980 | DECIMAL64
1981 { SemanticError( yylloc, "_Decimal64 is currently unimplemented." ); $$ = nullptr; }
1982 | DECIMAL128
1983 { SemanticError( yylloc, "_Decimal128 is currently unimplemented." ); $$ = nullptr; }
[4d51835]1984 | COMPLEX // C99
[5b639ee]1985 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1986 | IMAGINARY // C99
[5b639ee]1987 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1988 | SIGNED
1989 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1990 | UNSIGNED
1991 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1992 | SHORT
1993 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1994 | LONG
1995 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1996 | VALIST // GCC, __builtin_va_list
1997 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1998 | AUTO_TYPE
1999 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[1f652a7]2000 | vtable
2001 ;
2002
2003vtable_opt:
2004 // empty
2005 { $$ = nullptr; }
[9380add]2006 | vtable
[1f652a7]2007 ;
2008
2009vtable:
[8f6f3729]2010 VTABLE '(' type_name ')' default_opt
[93bbbc4]2011 { $$ = DeclarationNode::newVtableType( $3 ); }
2012 // { SemanticError( yylloc, "vtable is currently unimplemented." ); $$ = nullptr; }
[1f652a7]2013 ;
2014
2015default_opt:
2016 // empty
2017 { $$ = nullptr; }
2018 | DEFAULT
2019 { SemanticError( yylloc, "vtable default is currently unimplemented." ); $$ = nullptr; }
[4d51835]2020 ;
[51b73452]2021
2022basic_declaration_specifier:
[4d51835]2023 // A semantic check is necessary for conflicting storage classes.
2024 basic_type_specifier
2025 | declaration_qualifier_list basic_type_specifier
2026 { $$ = $2->addQualifiers( $1 ); }
2027 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
2028 { $$ = $1->addQualifiers( $2 ); }
2029 | basic_declaration_specifier storage_class type_qualifier_list
2030 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2031 | basic_declaration_specifier storage_class basic_type_specifier
2032 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
2033 ;
[51b73452]2034
2035basic_type_specifier:
[84d58c5]2036 direct_type
[f38e7d7]2037 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]2038 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]2039 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
2040 ;
[51b73452]2041
[84d58c5]2042direct_type:
[4d51835]2043 basic_type_name
2044 | type_qualifier_list basic_type_name
2045 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]2046 | direct_type type_qualifier
[4d51835]2047 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]2048 | direct_type basic_type_name
[4d51835]2049 { $$ = $1->addType( $2 ); }
2050 ;
[51b73452]2051
[84d58c5]2052indirect_type:
[b6ad601]2053 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]2054 { $$ = $3; }
[b6ad601]2055 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]2056 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]2057 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
2058 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
2059 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
2060 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]2061 | ZERO_T // CFA
2062 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
2063 | ONE_T // CFA
2064 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]2065 ;
[51b73452]2066
[d0ffed1]2067sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]2068 sue_type_specifier
[d8454b9]2069 {
2070 // printf( "sue_declaration_specifier %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2071 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2072 // printf( "\tattr %s\n", attr->name.c_str() );
2073 // } // for
2074 }
[4d51835]2075 | declaration_qualifier_list sue_type_specifier
2076 { $$ = $2->addQualifiers( $1 ); }
2077 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
2078 { $$ = $1->addQualifiers( $2 ); }
2079 | sue_declaration_specifier storage_class type_qualifier_list
2080 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2081 ;
[51b73452]2082
[d0ffed1]2083sue_type_specifier: // struct, union, enum + type specifier
2084 elaborated_type
[d8454b9]2085 {
2086 // printf( "sue_type_specifier %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2087 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2088 // printf( "\tattr %s\n", attr->name.c_str() );
2089 // } // for
2090 }
[fdca7c6]2091 | type_qualifier_list
2092 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
2093 elaborated_type
2094 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2095 | sue_type_specifier type_qualifier
[284da8c]2096 {
2097 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
2098 $$ = $1->addQualifiers( $2 );
2099 }
[4d51835]2100 ;
[51b73452]2101
[d0ffed1]2102sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
2103 sue_type_specifier_nobody
2104 | declaration_qualifier_list sue_type_specifier_nobody
2105 { $$ = $2->addQualifiers( $1 ); }
2106 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
2107 { $$ = $1->addQualifiers( $2 ); }
2108 | sue_declaration_specifier_nobody storage_class type_qualifier_list
2109 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2110 ;
2111
2112sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
2113 elaborated_type_nobody
2114 | type_qualifier_list elaborated_type_nobody
2115 { $$ = $2->addQualifiers( $1 ); }
2116 | sue_type_specifier_nobody type_qualifier
2117 { $$ = $1->addQualifiers( $2 ); }
2118 ;
2119
[84d58c5]2120type_declaration_specifier:
2121 type_type_specifier
2122 | declaration_qualifier_list type_type_specifier
[4d51835]2123 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]2124 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]2125 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]2126 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]2127 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2128 ;
[b87a5ed]2129
[84d58c5]2130type_type_specifier: // typedef types
2131 type_name
2132 | type_qualifier_list type_name
2133 { $$ = $2->addQualifiers( $1 ); }
2134 | type_type_specifier type_qualifier
2135 { $$ = $1->addQualifiers( $2 ); }
2136 ;
2137
2138type_name:
[4d51835]2139 TYPEDEFname
2140 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]2141 | '.' TYPEDEFname
[47498bd]2142 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]2143 | type_name '.' TYPEDEFname
[c5d7701]2144 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]2145 | typegen_name
2146 | '.' typegen_name
[47498bd]2147 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]2148 | type_name '.' typegen_name
[c5d7701]2149 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]2150 ;
2151
2152typegen_name: // CFA
[65d6de4]2153 TYPEGENname
2154 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2155 | TYPEGENname '(' ')'
[67cf18c]2156 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2157 | TYPEGENname '(' type_list ')'
[84d58c5]2158 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2159 ;
[51b73452]2160
[d0ffed1]2161elaborated_type: // struct, union, enum
[c0aa336]2162 aggregate_type
[d8454b9]2163 {
2164 // printf( "elaborated_type %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2165 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2166 // printf( "\tattr %s\n", attr->name.c_str() );
2167 // } // for
2168 }
[c0aa336]2169 | enum_type
[4d51835]2170 ;
[51b73452]2171
[d0ffed1]2172elaborated_type_nobody: // struct, union, enum - {...}
2173 aggregate_type_nobody
2174 | enum_type_nobody
2175 ;
2176
2177aggregate_type: // struct, union
[fc20514]2178 aggregate_key attribute_list_opt
2179 { forall = false; } // reset
2180 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2181 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[73f04fd]2182 | aggregate_key attribute_list_opt identifier
[fdca7c6]2183 {
[26ef3b2]2184 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2185 forall = false; // reset
2186 }
[284da8c]2187 '{' field_declaration_list_opt '}' type_parameters_opt
[d8454b9]2188 {
2189 // printf( "aggregate_type1 %s\n", $3.str->c_str() );
2190 // if ( $2 )
2191 // for ( Attribute * attr: reverseIterate( $2->attributes ) ) {
2192 // printf( "copySpecifiers12 %s\n", attr->name.c_str() );
2193 // } // for
2194 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2195 // printf( "aggregate_type2 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2196 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2197 // printf( "aggregate_type3 %s\n", attr->name.c_str() );
2198 // } // for
2199 }
[f9c3100]2200 | aggregate_key attribute_list_opt TYPEDEFname // unqualified type name
[407bde5]2201 {
[f9c3100]2202 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2203 forall = false; // reset
2204 }
[284da8c]2205 '{' field_declaration_list_opt '}' type_parameters_opt
[f9c3100]2206 {
[d8454b9]2207 // printf( "AGG3\n" );
[f9c3100]2208 DeclarationNode::newFromTypedef( $3 );
2209 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2210 }
2211 | aggregate_key attribute_list_opt TYPEGENname // unqualified type name
2212 {
2213 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
2214 forall = false; // reset
2215 }
2216 '{' field_declaration_list_opt '}' type_parameters_opt
2217 {
[d8454b9]2218 // printf( "AGG4\n" );
[f9c3100]2219 DeclarationNode::newFromTypeGen( $3, nullptr );
2220 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2221 }
[d0ffed1]2222 | aggregate_type_nobody
2223 ;
2224
[284da8c]2225type_parameters_opt:
2226 // empty
2227 { $$ = nullptr; } %prec '}'
2228 | '(' type_list ')'
2229 { $$ = $2; }
2230 ;
2231
[d0ffed1]2232aggregate_type_nobody: // struct, union - {...}
[73f04fd]2233 aggregate_key attribute_list_opt identifier
[84d58c5]2234 {
[26ef3b2]2235 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2236 forall = false; // reset
[84d58c5]2237 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2238 }
[73f04fd]2239 | aggregate_key attribute_list_opt type_name
[65d6de4]2240 {
[fc20514]2241 forall = false; // reset
[65d6de4]2242 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2243 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2244 // delete newFromTypeGen.
2245 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2246 $3->type->symbolic.name = nullptr;
2247 $3->type->symbolic.actuals = nullptr;
2248 delete $3;
2249 }
[4d51835]2250 ;
[51b73452]2251
2252aggregate_key:
[e307e12]2253 aggregate_data
2254 | aggregate_control
2255 ;
2256
2257aggregate_data:
[1f652a7]2258 STRUCT vtable_opt
[24711a3]2259 { $$ = AggregateDecl::Struct; }
[c0aa336]2260 | UNION
[24711a3]2261 { $$ = AggregateDecl::Union; }
[e307e12]2262 | EXCEPTION // CFA
[24711a3]2263 { $$ = AggregateDecl::Exception; }
[1f652a7]2264 // { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2265 ;
2266
2267aggregate_control: // CFA
[cbbd8fd7]2268 MONITOR
[24711a3]2269 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2270 | MUTEX STRUCT
[24711a3]2271 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2272 | GENERATOR
[24711a3]2273 { $$ = AggregateDecl::Generator; }
[cbbd8fd7]2274 | MUTEX GENERATOR
[aeb5d0d]2275 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2276 | COROUTINE
[24711a3]2277 { $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2278 | MUTEX COROUTINE
[aeb5d0d]2279 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2280 | THREAD
[24711a3]2281 { $$ = AggregateDecl::Thread; }
[cbbd8fd7]2282 | MUTEX THREAD
[aeb5d0d]2283 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2284 ;
[51b73452]2285
[7fdb94e1]2286field_declaration_list_opt:
[5d125e4]2287 // empty
[58dd019]2288 { $$ = nullptr; }
[7fdb94e1]2289 | field_declaration_list_opt field_declaration
[a7741435]2290 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2291 ;
[51b73452]2292
2293field_declaration:
[679e644]2294 type_specifier field_declaring_list_opt ';'
[d8454b9]2295 {
2296 // printf( "type_specifier1 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2297 $$ = fieldDecl( $1, $2 );
2298 // printf( "type_specifier2 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2299 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2300 // printf( "\tattr %s\n", attr->name.c_str() );
2301 // } // for
2302 }
[679e644]2303 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2304 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2305 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2306 {
[dea36ee]2307 if ( ! $3 ) { // field declarator ?
2308 $3 = DeclarationNode::newName( nullptr );
2309 } // if
[679a260]2310 $3->inLine = true;
[679e644]2311 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2312 distInl( $3 );
[8f91c9ae]2313 }
[e307e12]2314 | INLINE aggregate_control ';' // CFA
2315 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2316 | typedef_declaration ';' // CFA
2317 | cfa_field_declaring_list ';' // CFA, new style field declaration
2318 | EXTENSION cfa_field_declaring_list ';' // GCC
2319 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2320 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2321 { $$ = $2; } // mark all fields in list
[46fa473]2322 | cfa_typedef_declaration ';' // CFA
[b47b827]2323 | static_assert // C11
[4d51835]2324 ;
[b87a5ed]2325
[679e644]2326field_declaring_list_opt:
2327 // empty
2328 { $$ = nullptr; }
2329 | field_declarator
2330 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2331 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2332 ;
[51b73452]2333
[679e644]2334field_declarator:
[e07caa2]2335 bit_subrange_size // C special case, no field name
[4d51835]2336 { $$ = DeclarationNode::newBitfield( $1 ); }
2337 | variable_declarator bit_subrange_size_opt
[679e644]2338 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2339 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2340 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2341 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2342 { $$ = $1->addBitfield( $2 ); }
[679e644]2343 ;
2344
[e07caa2]2345field_abstract_list_opt:
2346 // empty
[dea36ee]2347 { $$ = nullptr; }
[e07caa2]2348 | field_abstract
2349 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2350 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2351 ;
2352
[e07caa2]2353field_abstract:
[f7e4db27]2354 // no bit fields
[e07caa2]2355 variable_abstract_declarator
[679e644]2356 ;
2357
2358cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2359 // bit-fields are handled by C declarations
[033ff37]2360 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2361 { $$ = $1->addName( $2 ); }
[033ff37]2362 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2363 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2364 ;
2365
2366cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2367 // bit-fields are handled by C declarations
[679e644]2368 cfa_abstract_declarator_tuple
2369 | cfa_field_abstract_list ','
2370 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2371 ;
[51b73452]2372
2373bit_subrange_size_opt:
[4d51835]2374 // empty
[58dd019]2375 { $$ = nullptr; }
[4d51835]2376 | bit_subrange_size
2377 ;
[51b73452]2378
2379bit_subrange_size:
[c786e1d]2380 ':' assignment_expression
[4d51835]2381 { $$ = $2; }
2382 ;
[51b73452]2383
[9e7236f4]2384enum_type:
[f9c3100]2385 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[374cb117]2386 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[f9c3100]2387 | ENUM attribute_list_opt identifier
[d0ffed1]2388 { typedefTable.makeTypedef( *$3 ); }
2389 '{' enumerator_list comma_opt '}'
[374cb117]2390 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[f9c3100]2391 | ENUM attribute_list_opt typedef_name // unqualified type name
[407bde5]2392 '{' enumerator_list comma_opt '}'
[374cb117]2393 { $$ = DeclarationNode::newEnum( $3->name, $5, true )->addQualifiers( $2 ); }
[f9c3100]2394 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2395 {
[a77713b]2396 if ( $3->storageClasses.val != 0 || $3->type->qualifiers.val != 0 )
2397 { SemanticError( yylloc, "storage-class and CV qualifiers are not meaningful for enumeration constants, which are const." ); }
[f135b50]2398
[5695645]2399 $$ = DeclarationNode::newEnum( nullptr, $7, true, $3 )->addQualifiers( $5 );
[8bea701]2400 }
[9e7236f4]2401 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt identifier attribute_list_opt
[8bea701]2402 {
[98337569]2403 if ( $3->storageClasses.val != 0 || $3->type->qualifiers.val != 0 ) { SemanticError( yylloc, "storage-class and CV qualifiers are not meaningful for enumeration constants, which are const." ); }
[8bea701]2404 typedefTable.makeTypedef( *$6 );
2405 }
2406 '{' enumerator_list comma_opt '}'
2407 {
[5695645]2408 $$ = DeclarationNode::newEnum( $6, $10, true, $3 )->addQualifiers( $5 )->addQualifiers( $7 );
[8bea701]2409 }
[f9c3100]2410 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt typedef_name attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2411 {
[98337569]2412 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]2413 typedefTable.makeTypedef( *$6->name );
[5695645]2414 $$ = DeclarationNode::newEnum( $6->name, $9, true, $3 )->addQualifiers( $5 )->addQualifiers( $7 );
[8bea701]2415 }
[d0ffed1]2416 | enum_type_nobody
2417 ;
2418
2419enum_type_nobody: // enum - {...}
[f9c3100]2420 ENUM attribute_list_opt identifier
[374cb117]2421 { typedefTable.makeTypedef( *$3 ); $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 ); }
[f9c3100]2422 | ENUM attribute_list_opt type_name // qualified type name
[374cb117]2423 { typedefTable.makeTypedef( *$3->type->symbolic.name ); $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 ); }
[4d51835]2424 ;
[51b73452]2425
2426enumerator_list:
[033ff37]2427 identifier_or_type_name enumerator_value_opt
[374cb117]2428 { $$ = DeclarationNode::newEnumValueGeneric( $1, $2 ); }
[f9c3100]2429 | INLINE type_name
[374cb117]2430 { $$ = DeclarationNode::newEnumValueGeneric( new string("inline"), nullptr ); }
[033ff37]2431 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[374cb117]2432 { $$ = $1->appendList( DeclarationNode::newEnumValueGeneric( $3, $4 ) ); }
[f9c3100]2433 | enumerator_list ',' INLINE type_name enumerator_value_opt
[374cb117]2434 { $$ = $1->appendList( DeclarationNode::newEnumValueGeneric( new string("inline"), nullptr ) ); }
[4d51835]2435 ;
[51b73452]2436
2437enumerator_value_opt:
[4d51835]2438 // empty
[58dd019]2439 { $$ = nullptr; }
[408ab79]2440 // | '=' constant_expression
2441 // { $$ = $2; }
[f9c3100]2442 | simple_assignment_operator initializer
[374cb117]2443 { $$ = $1 == OperKinds::Assign ? $2 : $2->set_maybeConstructed( false ); }
[4d51835]2444 ;
[51b73452]2445
[5a51798]2446cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2447 // empty
[2a8427c6]2448 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2449 | ELLIPSIS
[58dd019]2450 { $$ = nullptr; }
[2a8427c6]2451 | cfa_abstract_parameter_list
[c0aa336]2452 | cfa_parameter_list
[c0a33d2]2453 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2454 { $$ = $1->appendList( $5 ); }
2455 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2456 { $$ = $1->addVarArgs(); }
[c0a33d2]2457 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2458 { $$ = $1->addVarArgs(); }
2459 ;
[b87a5ed]2460
[c0aa336]2461cfa_parameter_list: // CFA
2462 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2463 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2464 cfa_parameter_declaration
[c0a33d2]2465 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2466 { $$ = $1->appendList( $5 ); }
2467 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2468 { $$ = $1->appendList( $5 ); }
2469 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2470 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2471 ;
[b87a5ed]2472
[c0aa336]2473cfa_abstract_parameter_list: // CFA, new & old style abstract
2474 cfa_abstract_parameter_declaration
[c0a33d2]2475 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2476 { $$ = $1->appendList( $5 ); }
[4d51835]2477 ;
[51b73452]2478
2479parameter_type_list_opt:
[4d51835]2480 // empty
[58dd019]2481 { $$ = nullptr; }
[2a8427c6]2482 | ELLIPSIS
2483 { $$ = nullptr; }
2484 | parameter_list
[4d51835]2485 | parameter_list pop ',' push ELLIPSIS
2486 { $$ = $1->addVarArgs(); }
2487 ;
[b87a5ed]2488
2489parameter_list: // abstract + real
[4d51835]2490 abstract_parameter_declaration
2491 | parameter_declaration
2492 | parameter_list pop ',' push abstract_parameter_declaration
2493 { $$ = $1->appendList( $5 ); }
2494 | parameter_list pop ',' push parameter_declaration
2495 { $$ = $1->appendList( $5 ); }
2496 ;
[51b73452]2497
[de62360d]2498// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2499// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2500
[c0aa336]2501cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2502 parameter_declaration
[5a51798]2503 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2504 { $$ = $1->addName( $2 ); }
[5a51798]2505 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2506 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2507 { $$ = $1->addName( $2 ); }
[5a51798]2508 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2509 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2510 | cfa_function_specifier
[4d51835]2511 ;
[b87a5ed]2512
[c0aa336]2513cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2514 abstract_parameter_declaration
[c0aa336]2515 | cfa_identifier_parameter_declarator_no_tuple
2516 | cfa_abstract_tuple
2517 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2518 | type_qualifier_list cfa_abstract_tuple
[4d51835]2519 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2520 | cfa_abstract_function
[4d51835]2521 ;
[51b73452]2522
2523parameter_declaration:
[d0ffed1]2524 // No SUE declaration in parameter list.
[5a51798]2525 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2526 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2527 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2528 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2529 ;
[51b73452]2530
2531abstract_parameter_declaration:
[5a51798]2532 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2533 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2534 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2535 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2536 ;
[51b73452]2537
[c11e31c]2538// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2539// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2540// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2541
[b87a5ed]2542identifier_list: // K&R-style parameter list => no types
[033ff37]2543 identifier
[4d51835]2544 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2545 | identifier_list ',' identifier
[4d51835]2546 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2547 ;
[51b73452]2548
[2871210]2549identifier_or_type_name:
[4d51835]2550 identifier
2551 | TYPEDEFname
2552 | TYPEGENname
2553 ;
[51b73452]2554
[84d58c5]2555type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2556 cfa_abstract_declarator_tuple // CFA
[4d51835]2557 | type_specifier
[c0aa336]2558 | type_specifier abstract_declarator
[4d51835]2559 { $$ = $2->addType( $1 ); }
2560 ;
[b87a5ed]2561
[84d58c5]2562type: // typeof, assertion
2563 type_no_function
[c0aa336]2564 | cfa_abstract_function // CFA
[4d51835]2565 ;
[51b73452]2566
2567initializer_opt:
[4d51835]2568 // empty
[58dd019]2569 { $$ = nullptr; }
[f9c3100]2570 | simple_assignment_operator initializer { $$ = $1 == OperKinds::Assign ? $2 : $2->set_maybeConstructed( false ); }
2571 | '=' VOID { $$ = new InitializerNode( true ); }
[63b3279e]2572 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2573 ;
[51b73452]2574
2575initializer:
[de62360d]2576 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2577 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2578 ;
[51b73452]2579
[7fdb94e1]2580initializer_list_opt:
[097e2b0]2581 // empty
[58dd019]2582 { $$ = nullptr; }
[097e2b0]2583 | initializer
[4d51835]2584 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2585 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
[63b3279e]2586 | initializer_list_opt ',' designation initializer { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2587 ;
[b87a5ed]2588
[de62360d]2589// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2590// '=' to separator the designator from the initializer value, as in:
[c11e31c]2591//
[b87a5ed]2592// int x[10] = { [1] = 3 };
[c11e31c]2593//
[de62360d]2594// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2595// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2596// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2597// shift/reduce conflicts
[51b73452]2598
2599designation:
[4d51835]2600 designator_list ':' // C99, CFA uses ":" instead of "="
[e16eb460]2601 | identifier_at ':' // GCC, field name
[d1625f8]2602 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2603 ;
[51b73452]2604
[b87a5ed]2605designator_list: // C99
[4d51835]2606 designator
[2871210]2607 | designator_list designator
[4a063df]2608 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2609 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2610 ;
[51b73452]2611
2612designator:
[e16eb460]2613 '.' identifier_at // C99, field name
[d1625f8]2614 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2615 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2616 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2617 { $$ = $3; }
[c0a33d2]2618 | '[' push subrange pop ']' // CFA, multiple array elements
2619 { $$ = $3; }
2620 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2621 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2622 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2623 { $$ = $4; }
[4d51835]2624 ;
[51b73452]2625
[de62360d]2626// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2627// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2628//
2629// Overloading: function, data, and operator identifiers may be overloaded.
2630//
[3ca7ef3]2631// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2632// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2633// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2634//
[de62360d]2635// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2636// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2637//
2638// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2639// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2640// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2641// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2642// on type arguments of polymorphic functions.
[c11e31c]2643
[b87a5ed]2644type_parameter_list: // CFA
[67cf18c]2645 type_parameter
2646 | type_parameter_list ',' type_parameter
[4d51835]2647 { $$ = $1->appendList( $3 ); }
2648 ;
[b87a5ed]2649
[84d58c5]2650type_initializer_opt: // CFA
2651 // empty
2652 { $$ = nullptr; }
2653 | '=' type
2654 { $$ = $2; }
2655 ;
2656
[b87a5ed]2657type_parameter: // CFA
[033ff37]2658 type_class identifier_or_type_name
[408ab79]2659 {
2660 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[ec3f9c8]2661 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated, use T " ); }
2662 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated, use T &" ); }
2663 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated, use T ..." ); }
[fd54fef]2664 }
[5a51798]2665 type_initializer_opt assertion_list_opt
[67cf18c]2666 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2667 | identifier_or_type_name new_type_class
2668 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2669 type_initializer_opt assertion_list_opt
2670 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2671 | '[' identifier_or_type_name ']'
[b66d14a]2672 {
[6e50a6b]2673 typedefTable.addToScope( *$2, TYPEDIMname, "9" );
2674 $$ = DeclarationNode::newTypeParam( TypeDecl::Dimension, $2 );
[b66d14a]2675 }
[5a51798]2676 // | type_specifier identifier_parameter_declarator
[9997fee]2677 | assertion_list
[07de76b]2678 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2679 ;
[b87a5ed]2680
[5a51798]2681new_type_class: // CFA
2682 // empty
2683 { $$ = TypeDecl::Otype; }
2684 | '&'
2685 { $$ = TypeDecl::Dtype; }
2686 | '*'
[b66d14a]2687 { $$ = TypeDecl::DStype; } // dtype + sized
[2ac218d]2688 // | '(' '*' ')'
2689 // { $$ = TypeDecl::Ftype; }
[5a51798]2690 | ELLIPSIS
2691 { $$ = TypeDecl::Ttype; }
2692 ;
2693
[b87a5ed]2694type_class: // CFA
[4040425]2695 OTYPE
[07de76b]2696 { $$ = TypeDecl::Otype; }
[4d51835]2697 | DTYPE
[07de76b]2698 { $$ = TypeDecl::Dtype; }
[8f60f0b]2699 | FTYPE
[07de76b]2700 { $$ = TypeDecl::Ftype; }
[8f60f0b]2701 | TTYPE
[07de76b]2702 { $$ = TypeDecl::Ttype; }
[4d51835]2703 ;
[b87a5ed]2704
2705assertion_list_opt: // CFA
[4d51835]2706 // empty
[58dd019]2707 { $$ = nullptr; }
[9997fee]2708 | assertion_list
2709 ;
2710
2711assertion_list: // CFA
2712 assertion
2713 | assertion_list assertion
[3ca7ef3]2714 { $$ = $1->appendList( $2 ); }
[4d51835]2715 ;
[b87a5ed]2716
2717assertion: // CFA
[033ff37]2718 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2719 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2720 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2721 { $$ = $4; }
[35718a9]2722 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2723 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2724 ;
[b87a5ed]2725
[84d58c5]2726type_list: // CFA
2727 type
[513e165]2728 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2729 | assignment_expression
[84d58c5]2730 | type_list ',' type
[4a063df]2731 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2732 | type_list ',' assignment_expression
[6e50a6b]2733 { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2734 ;
[b87a5ed]2735
2736type_declaring_list: // CFA
[4040425]2737 OTYPE type_declarator
[4d51835]2738 { $$ = $2; }
[4040425]2739 | storage_class_list OTYPE type_declarator
[4d51835]2740 { $$ = $3->addQualifiers( $1 ); }
2741 | type_declaring_list ',' type_declarator
[a7c90d4]2742 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2743 ;
[b87a5ed]2744
2745type_declarator: // CFA
[4d51835]2746 type_declarator_name assertion_list_opt
2747 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2748 | type_declarator_name assertion_list_opt '=' type
[4d51835]2749 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2750 ;
[b87a5ed]2751
2752type_declarator_name: // CFA
[033ff37]2753 identifier_or_type_name
[4d51835]2754 {
[ecae5860]2755 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2756 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2757 }
[033ff37]2758 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2759 {
[ecae5860]2760 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2761 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2762 }
2763 ;
[b87a5ed]2764
[4040425]2765trait_specifier: // CFA
[033ff37]2766 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2767 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2768 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2769 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2770 ;
[b87a5ed]2771
[84d58c5]2772trait_declaration_list: // CFA
[4040425]2773 trait_declaration
[13e8427]2774 | trait_declaration_list pop push trait_declaration
2775 { $$ = $1->appendList( $4 ); }
[4d51835]2776 ;
[b87a5ed]2777
[84d58c5]2778trait_declaration: // CFA
[13e8427]2779 cfa_trait_declaring_list ';'
2780 | trait_declaring_list ';'
[4d51835]2781 ;
[b87a5ed]2782
[c0aa336]2783cfa_trait_declaring_list: // CFA
2784 cfa_variable_specifier
2785 | cfa_function_specifier
2786 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2787 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2788 ;
[b87a5ed]2789
[4040425]2790trait_declaring_list: // CFA
[4d51835]2791 type_specifier declarator
[7fdb94e1]2792 { $$ = $2->addType( $1 ); }
[4040425]2793 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2794 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2795 ;
[51b73452]2796
[c11e31c]2797//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2798
2799translation_unit:
[3d56d15b]2800 // empty, input file
[4d51835]2801 | external_definition_list
[a7741435]2802 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2803 ;
[51b73452]2804
2805external_definition_list:
[35718a9]2806 push external_definition pop
2807 { $$ = $2; }
[fc20514]2808 | external_definition_list push external_definition pop
2809 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2810 ;
[51b73452]2811
2812external_definition_list_opt:
[4d51835]2813 // empty
[58dd019]2814 { $$ = nullptr; }
[3d56d15b]2815 | external_definition_list
2816 ;
2817
2818up:
[fc20514]2819 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2820 ;
2821
2822down:
2823 { typedefTable.down(); }
[4d51835]2824 ;
[51b73452]2825
2826external_definition:
[2d019af]2827 DIRECTIVE
2828 { $$ = DeclarationNode::newDirectiveStmt( new StatementNode( build_directive( $1 ) ) ); }
2829 | declaration
[4d51835]2830 | external_function_definition
[ecae5860]2831 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2832 {
2833 distExt( $2 ); // mark all fields in list
2834 $$ = $2;
2835 }
[e994912]2836 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
[5e25953]2837 { $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) ); }
[aac37fa]2838 | EXTERN STRINGliteral
2839 {
2840 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
2841 linkage = LinkageSpec::update( yylloc, linkage, $2 );
2842 }
2843 up external_definition down
2844 {
2845 linkage = linkageStack.top();
2846 linkageStack.pop();
2847 $$ = $5;
2848 }
[c0aa336]2849 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2850 {
[3b8e52c]2851 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2852 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2853 }
[3d56d15b]2854 '{' up external_definition_list_opt down '}'
[4d51835]2855 {
2856 linkage = linkageStack.top();
2857 linkageStack.pop();
[3d56d15b]2858 $$ = $6;
[8e9cbb2]2859 }
[9997fee]2860 | type_qualifier_list
2861 {
[3d56d15b]2862 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2863 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2864 }
2865 '{' up external_definition_list_opt down '}' // CFA, namespace
2866 {
[4c3ee8d]2867 distQual( $5, $1 );
[fc20514]2868 forall = false;
[3d56d15b]2869 $$ = $5;
[9997fee]2870 }
2871 | declaration_qualifier_list
2872 {
[4c3ee8d]2873 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2874 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2875 }
2876 '{' up external_definition_list_opt down '}' // CFA, namespace
2877 {
[4c3ee8d]2878 distQual( $5, $1 );
[fc20514]2879 forall = false;
[3d56d15b]2880 $$ = $5;
[9997fee]2881 }
2882 | declaration_qualifier_list type_qualifier_list
2883 {
[3d56d15b]2884 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]2885 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2886 }
[3d56d15b]2887 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2888 {
[284da8c]2889 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2890 forall = false;
[3d56d15b]2891 $$ = $6;
[9997fee]2892 }
[4d51835]2893 ;
2894
2895external_function_definition:
2896 function_definition
[de62360d]2897 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2898 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2899 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2900 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2901 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2902 | function_declarator compound_statement
[c0a33d2]2903 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2904 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2905 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2906 ;
[51b73452]2907
[8b47e50]2908with_clause_opt:
2909 // empty
[9997fee]2910 { $$ = nullptr; forall = false; }
[d8454b9]2911 | WITH '(' tuple_expression_list ')' attribute_list_opt
2912 {
2913 $$ = $3; forall = false;
2914 if ( $5 ) {
2915 SemanticError( yylloc, "Attributes cannot be associated with function body. Move attribute(s) before \"with\" clause." );
2916 $$ = nullptr;
2917 } // if
2918 }
[8b47e50]2919 ;
2920
[51b73452]2921function_definition:
[8b47e50]2922 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2923 {
[481115f]2924 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2925 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2926 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2927 $$ = $1;
[4d51835]2928 }
[8b47e50]2929 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2930 {
[c38ae92]2931 rebindForall( $1, $2 );
[7fdb94e1]2932 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2933 }
2934 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2935 {
2936 rebindForall( $1, $2 );
[5fcba14]2937 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2938 }
[a16a7ec]2939 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2940 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2941 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2942 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2943 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2944 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2945 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2946 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2947 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2948
2949 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2950 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2951 {
[c38ae92]2952 rebindForall( $1, $2 );
[5fcba14]2953 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2954 }
[a16a7ec]2955 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2956 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2957 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2958 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2959 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2960 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2961 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2962 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2963 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2964 ;
[51b73452]2965
2966declarator:
[4d51835]2967 variable_declarator
[c6b1105]2968 | variable_type_redeclarator
[4d51835]2969 | function_declarator
2970 ;
[51b73452]2971
2972subrange:
[4d51835]2973 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]2974 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]2975 ;
[b87a5ed]2976
2977asm_name_opt: // GCC
[4d51835]2978 // empty
[58dd019]2979 { $$ = nullptr; }
2980 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2981 {
2982 DeclarationNode * name = new DeclarationNode();
2983 name->asmName = $3;
2984 $$ = name->addQualifiers( $5 );
2985 }
[4d51835]2986 ;
[b87a5ed]2987
2988attribute_list_opt: // GCC
[4d51835]2989 // empty
[58dd019]2990 { $$ = nullptr; }
[4d51835]2991 | attribute_list
2992 ;
[b87a5ed]2993
2994attribute_list: // GCC
[4d51835]2995 attribute
2996 | attribute_list attribute
[1db21619]2997 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2998 ;
[b87a5ed]2999
3000attribute: // GCC
[44a81853]3001 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
3002 { $$ = $4; }
[4d51835]3003 ;
[b87a5ed]3004
[44a81853]3005attribute_name_list: // GCC
3006 attribute_name
3007 | attribute_name_list ',' attribute_name
[c0aa336]3008 { $$ = $3->addQualifiers( $1 ); }
[4d51835]3009 ;
[b87a5ed]3010
[44a81853]3011attribute_name: // GCC
[4d51835]3012 // empty
[44a81853]3013 { $$ = nullptr; }
3014 | attr_name
3015 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]3016 | attr_name '(' argument_expression_list_opt ')'
[44a81853]3017 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]3018 ;
[b87a5ed]3019
[44a81853]3020attr_name: // GCC
3021 IDENTIFIER
[5b2edbc]3022 | quasi_keyword
[44a81853]3023 | TYPEDEFname
3024 | TYPEGENname
[114014c]3025 | FALLTHROUGH
3026 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]3027 | CONST
[9ff56e7]3028 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]3029 ;
[51b73452]3030
[c11e31c]3031// ============================================================================
[de62360d]3032// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
3033// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
3034// in:
[c11e31c]3035//
[b87a5ed]3036// int (*f())[10] { ... };
3037// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]3038//
[de62360d]3039// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
3040// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]3041// ============================================================================
3042
3043// ----------------------------------------------------------------------------
[de62360d]3044// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
3045// to define a variable or function prototype, e.g.:
[c11e31c]3046//
[b87a5ed]3047// valid declaration invalid definition
3048// ----------------- ------------------
[4d51835]3049// int f; int f {}
3050// int *f; int *f {}
[b87a5ed]3051// int f[10]; int f[10] {}
[4d51835]3052// int (*f)(int); int (*f)(int) {}
[c11e31c]3053//
[de62360d]3054// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
3055// variable_declarator and function_declarator.
[c11e31c]3056// ----------------------------------------------------------------------------
3057
[de62360d]3058// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
3059// declaring an array of functions versus a pointer to an array of functions.
[51b73452]3060
[5e25953]3061paren_identifier:
[e16eb460]3062 identifier_at
[5e25953]3063 { $$ = DeclarationNode::newName( $1 ); }
3064 | '(' paren_identifier ')' // redundant parenthesis
3065 { $$ = $2; }
3066 ;
3067
[51b73452]3068variable_declarator:
[4d51835]3069 paren_identifier attribute_list_opt
[1db21619]3070 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3071 | variable_ptr
3072 | variable_array attribute_list_opt
[1db21619]3073 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3074 | variable_function attribute_list_opt
[1db21619]3075 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3076 ;
[51b73452]3077
3078variable_ptr:
[dd51906]3079 ptrref_operator variable_declarator
[ce8c12f]3080 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3081 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]3082 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3083 | '(' variable_ptr ')' attribute_list_opt // redundant parenthesis
3084 { $$ = $2->addQualifiers( $4 ); }
3085 | '(' attribute_list variable_ptr ')' attribute_list_opt // redundant parenthesis
3086 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3087 ;
[51b73452]3088
3089variable_array:
[4d51835]3090 paren_identifier array_dimension
3091 { $$ = $1->addArray( $2 ); }
3092 | '(' variable_ptr ')' array_dimension
3093 { $$ = $2->addArray( $4 ); }
[5e25953]3094 | '(' attribute_list variable_ptr ')' array_dimension
3095 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
3096 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3097 { $$ = $2->addArray( $4 ); }
[5e25953]3098 | '(' attribute_list variable_array ')' multi_array_dimension // redundant parenthesis
3099 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3100 | '(' variable_array ')' // redundant parenthesis
3101 { $$ = $2; }
[5e25953]3102 | '(' attribute_list variable_array ')' // redundant parenthesis
3103 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3104 ;
[51b73452]3105
3106variable_function:
[4d51835]3107 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3108 { $$ = $2->addParamList( $6 ); }
[5e25953]3109 | '(' attribute_list variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3110 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]3111 | '(' variable_function ')' // redundant parenthesis
3112 { $$ = $2; }
[5e25953]3113 | '(' attribute_list variable_function ')' // redundant parenthesis
3114 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3115 ;
[51b73452]3116
[c6b1105]3117// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
3118// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
3119// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]3120
3121function_declarator:
[4d51835]3122 function_no_ptr attribute_list_opt
[1db21619]3123 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3124 | function_ptr
3125 | function_array attribute_list_opt
[1db21619]3126 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3127 ;
[51b73452]3128
3129function_no_ptr:
[4d51835]3130 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3131 { $$ = $1->addParamList( $4 ); }
3132 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
3133 { $$ = $2->addParamList( $6 ); }
[5e25953]3134 | '(' attribute_list function_ptr ')' '(' push parameter_type_list_opt pop ')'
3135 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]3136 | '(' function_no_ptr ')' // redundant parenthesis
3137 { $$ = $2; }
[5e25953]3138 | '(' attribute_list function_no_ptr ')' // redundant parenthesis
3139 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3140 ;
[51b73452]3141
3142function_ptr:
[dd51906]3143 ptrref_operator function_declarator
[ce8c12f]3144 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3145 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]3146 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3147 | '(' function_ptr ')' attribute_list_opt
3148 { $$ = $2->addQualifiers( $4 ); }
3149 | '(' attribute_list function_ptr ')' attribute_list_opt
3150 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3151 ;
[51b73452]3152
3153function_array:
[4d51835]3154 '(' function_ptr ')' array_dimension
3155 { $$ = $2->addArray( $4 ); }
[5e25953]3156 | '(' attribute_list function_ptr ')' array_dimension
3157 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3158 | '(' function_array ')' multi_array_dimension // redundant parenthesis
3159 { $$ = $2->addArray( $4 ); }
[5e25953]3160 | '(' attribute_list function_array ')' multi_array_dimension // redundant parenthesis
3161 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3162 | '(' function_array ')' // redundant parenthesis
3163 { $$ = $2; }
[5e25953]3164 | '(' attribute_list function_array ')' // redundant parenthesis
3165 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3166 ;
[51b73452]3167
[c0aa336]3168// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
3169//
3170// f( a, b, c ) int a, *b, c[]; {}
3171//
3172// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
3173// returning arrays and functions versus pointers to arrays and functions.
[51b73452]3174
[c0aa336]3175KR_function_declarator:
3176 KR_function_no_ptr
3177 | KR_function_ptr
3178 | KR_function_array
[4d51835]3179 ;
[51b73452]3180
[c0aa336]3181KR_function_no_ptr:
[4d51835]3182 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
3183 { $$ = $1->addIdList( $3 ); }
[c0a33d2]3184 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3185 { $$ = $2->addParamList( $6 ); }
[5e25953]3186 | '(' attribute_list KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3187 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[c0aa336]3188 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]3189 { $$ = $2; }
[5e25953]3190 | '(' attribute_list KR_function_no_ptr ')' // redundant parenthesis
3191 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3192 ;
[51b73452]3193
[c0aa336]3194KR_function_ptr:
3195 ptrref_operator KR_function_declarator
[ce8c12f]3196 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3197 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]3198 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3199 | '(' KR_function_ptr ')'
[4d51835]3200 { $$ = $2; }
[5e25953]3201 | '(' attribute_list KR_function_ptr ')'
3202 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3203 ;
[51b73452]3204
[c0aa336]3205KR_function_array:
3206 '(' KR_function_ptr ')' array_dimension
[4d51835]3207 { $$ = $2->addArray( $4 ); }
[5e25953]3208 | '(' attribute_list KR_function_ptr ')' array_dimension
3209 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3210 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3211 { $$ = $2->addArray( $4 ); }
[5e25953]3212 | '(' attribute_list KR_function_array ')' multi_array_dimension // redundant parenthesis
3213 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3214 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]3215 { $$ = $2; }
[5e25953]3216 | '(' attribute_list KR_function_array ')' // redundant parenthesis
3217 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3218 ;
[51b73452]3219
[2871210]3220// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]3221//
[b87a5ed]3222// typedef int foo;
3223// {
3224// int foo; // redefine typedef name in new scope
3225// }
[c11e31c]3226//
[de62360d]3227// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3228// and functions versus pointers to arrays and functions.
[51b73452]3229
[2871210]3230paren_type:
[f9c3100]3231 typedef_name
[c4f68dc]3232 {
[f9c3100]3233 // hide type name in enclosing scope by variable name
3234 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
[c4f68dc]3235 }
[2871210]3236 | '(' paren_type ')'
[4d51835]3237 { $$ = $2; }
3238 ;
[51b73452]3239
[5e25953]3240variable_type_redeclarator:
3241 paren_type attribute_list_opt
3242 { $$ = $1->addQualifiers( $2 ); }
3243 | type_ptr
3244 | type_array attribute_list_opt
3245 { $$ = $1->addQualifiers( $2 ); }
3246 | type_function attribute_list_opt
3247 { $$ = $1->addQualifiers( $2 ); }
3248 ;
3249
[2871210]3250type_ptr:
[c6b1105]3251 ptrref_operator variable_type_redeclarator
[ce8c12f]3252 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3253 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3254 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3255 | '(' type_ptr ')' attribute_list_opt // redundant parenthesis
3256 { $$ = $2->addQualifiers( $4 ); }
3257 | '(' attribute_list type_ptr ')' attribute_list_opt // redundant parenthesis
3258 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3259 ;
[51b73452]3260
[2871210]3261type_array:
3262 paren_type array_dimension
[4d51835]3263 { $$ = $1->addArray( $2 ); }
[2871210]3264 | '(' type_ptr ')' array_dimension
[4d51835]3265 { $$ = $2->addArray( $4 ); }
[5e25953]3266 | '(' attribute_list type_ptr ')' array_dimension
3267 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3268 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3269 { $$ = $2->addArray( $4 ); }
[5e25953]3270 | '(' attribute_list type_array ')' multi_array_dimension // redundant parenthesis
3271 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3272 | '(' type_array ')' // redundant parenthesis
[4d51835]3273 { $$ = $2; }
[5e25953]3274 | '(' attribute_list type_array ')' // redundant parenthesis
3275 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3276 ;
[51b73452]3277
[2871210]3278type_function:
3279 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3280 { $$ = $1->addParamList( $4 ); }
[2871210]3281 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3282 { $$ = $2->addParamList( $6 ); }
[5e25953]3283 | '(' attribute_list type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3284 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[2871210]3285 | '(' type_function ')' // redundant parenthesis
[4d51835]3286 { $$ = $2; }
[5e25953]3287 | '(' attribute_list type_function ')' // redundant parenthesis
3288 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3289 ;
[51b73452]3290
[c0aa336]3291// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3292// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3293// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3294// pointers to arrays and functions.
[51b73452]3295
3296identifier_parameter_declarator:
[4d51835]3297 paren_identifier attribute_list_opt
[1db21619]3298 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3299 | '&' MUTEX paren_identifier attribute_list_opt
3300 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3301 | identifier_parameter_ptr
3302 | identifier_parameter_array attribute_list_opt
[1db21619]3303 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3304 | identifier_parameter_function attribute_list_opt
[1db21619]3305 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3306 ;
[51b73452]3307
3308identifier_parameter_ptr:
[dd51906]3309 ptrref_operator identifier_parameter_declarator
[ce8c12f]3310 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3311 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3312 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3313 | '(' identifier_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3314 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3315 ;
[51b73452]3316
3317identifier_parameter_array:
[4d51835]3318 paren_identifier array_parameter_dimension
3319 { $$ = $1->addArray( $2 ); }
3320 | '(' identifier_parameter_ptr ')' array_dimension
3321 { $$ = $2->addArray( $4 ); }
3322 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3323 { $$ = $2->addArray( $4 ); }
3324 | '(' identifier_parameter_array ')' // redundant parenthesis
3325 { $$ = $2; }
3326 ;
[51b73452]3327
3328identifier_parameter_function:
[c0a33d2]3329 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3330 { $$ = $1->addParamList( $4 ); }
3331 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3332 { $$ = $2->addParamList( $6 ); }
[4d51835]3333 | '(' identifier_parameter_function ')' // redundant parenthesis
3334 { $$ = $2; }
3335 ;
[b87a5ed]3336
[de62360d]3337// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3338// e.g.:
[c11e31c]3339//
[b87a5ed]3340// typedef int foo;
[114014c]3341// forall( otype T ) struct foo;
[b87a5ed]3342// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3343//
[c0aa336]3344// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3345
[2871210]3346type_parameter_redeclarator:
[f9c3100]3347 typedef_name attribute_list_opt
[1db21619]3348 { $$ = $1->addQualifiers( $2 ); }
[f9c3100]3349 | '&' MUTEX typedef_name attribute_list_opt
[b6b3c42]3350 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3351 | type_parameter_ptr
3352 | type_parameter_array attribute_list_opt
[1db21619]3353 { $$ = $1->addQualifiers( $2 ); }
[2871210]3354 | type_parameter_function attribute_list_opt
[1db21619]3355 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3356 ;
[51b73452]3357
[f9c3100]3358typedef_name:
[4d51835]3359 TYPEDEFname
[7fdb94e1]3360 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3361 | TYPEGENname
[7fdb94e1]3362 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3363 ;
[51b73452]3364
[2871210]3365type_parameter_ptr:
[dd51906]3366 ptrref_operator type_parameter_redeclarator
[ce8c12f]3367 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3368 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3369 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3370 | '(' type_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3371 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3372 ;
[51b73452]3373
[2871210]3374type_parameter_array:
[f9c3100]3375 typedef_name array_parameter_dimension
[4d51835]3376 { $$ = $1->addArray( $2 ); }
[2871210]3377 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3378 { $$ = $2->addArray( $4 ); }
3379 ;
[51b73452]3380
[2871210]3381type_parameter_function:
[f9c3100]3382 typedef_name '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[c0a33d2]3383 { $$ = $1->addParamList( $4 ); }
3384 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3385 { $$ = $2->addParamList( $6 ); }
[4d51835]3386 ;
[b87a5ed]3387
[de62360d]3388// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3389// which the type applies, e.g.:
[c11e31c]3390//
[b87a5ed]3391// sizeof( int );
[c0aa336]3392// sizeof( int * );
[b87a5ed]3393// sizeof( int [10] );
[c0aa336]3394// sizeof( int (*)() );
3395// sizeof( int () );
[c11e31c]3396//
[de62360d]3397// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3398// and functions versus pointers to arrays and functions.
[51b73452]3399
3400abstract_declarator:
[4d51835]3401 abstract_ptr
3402 | abstract_array attribute_list_opt
[1db21619]3403 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3404 | abstract_function attribute_list_opt
[1db21619]3405 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3406 ;
[51b73452]3407
3408abstract_ptr:
[dd51906]3409 ptrref_operator
[ce8c12f]3410 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3411 | ptrref_operator type_qualifier_list
[ce8c12f]3412 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3413 | ptrref_operator abstract_declarator
[ce8c12f]3414 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3415 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3416 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3417 | '(' abstract_ptr ')' attribute_list_opt
3418 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3419 ;
[51b73452]3420
3421abstract_array:
[4d51835]3422 array_dimension
3423 | '(' abstract_ptr ')' array_dimension
3424 { $$ = $2->addArray( $4 ); }
3425 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3426 { $$ = $2->addArray( $4 ); }
3427 | '(' abstract_array ')' // redundant parenthesis
3428 { $$ = $2; }
3429 ;
[51b73452]3430
3431abstract_function:
[c0a33d2]3432 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3433 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3434 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3435 { $$ = $2->addParamList( $6 ); }
[4d51835]3436 | '(' abstract_function ')' // redundant parenthesis
3437 { $$ = $2; }
3438 ;
[51b73452]3439
3440array_dimension:
[4d51835]3441 // Only the first dimension can be empty.
[2871210]3442 '[' ']'
[4d51835]3443 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3444 | '[' ']' multi_array_dimension
3445 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[6a99803]3446 | '[' push assignment_expression pop ',' comma_expression ']'
3447 { $$ = DeclarationNode::newArray( $3, 0, false )->addArray( DeclarationNode::newArray( $6, 0, false ) ); }
3448 // { SemanticError( yylloc, "New array dimension is currently unimplemented." ); $$ = nullptr; }
[4d51835]3449 | multi_array_dimension
3450 ;
[51b73452]3451
3452multi_array_dimension:
[c0a33d2]3453 '[' push assignment_expression pop ']'
3454 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3455 | '[' push '*' pop ']' // C99
[4d51835]3456 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3457 | multi_array_dimension '[' push assignment_expression pop ']'
3458 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3459 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3460 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3461 ;
[51b73452]3462
[c11e31c]3463// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3464// identifier to which the type applies, e.g.:
3465//
[c0aa336]3466// int f( int ); // not handled here
3467// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3468// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3469// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3470//
[de62360d]3471// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3472// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3473// special meaning of parenthesis around a typedef name:
3474//
3475// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3476// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3477// not as redundant parentheses around the identifier."
3478//
3479// For example:
3480//
3481// typedef float T;
3482// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3483// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3484// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3485// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3486//
3487// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3488// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3489// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3490// functions.
[51b73452]3491
3492abstract_parameter_declarator:
[4d51835]3493 abstract_parameter_ptr
[b6b3c42]3494 | '&' MUTEX attribute_list_opt
3495 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3496 | abstract_parameter_array attribute_list_opt
[1db21619]3497 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3498 | abstract_parameter_function attribute_list_opt
[1db21619]3499 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3500 ;
[51b73452]3501
3502abstract_parameter_ptr:
[dd51906]3503 ptrref_operator
[ce8c12f]3504 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3505 | ptrref_operator type_qualifier_list
[ce8c12f]3506 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3507 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3508 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3509 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3510 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3511 | '(' abstract_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3512 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3513 ;
[51b73452]3514
3515abstract_parameter_array:
[4d51835]3516 array_parameter_dimension
3517 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3518 { $$ = $2->addArray( $4 ); }
3519 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3520 { $$ = $2->addArray( $4 ); }
3521 | '(' abstract_parameter_array ')' // redundant parenthesis
3522 { $$ = $2; }
3523 ;
[51b73452]3524
3525abstract_parameter_function:
[c0a33d2]3526 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3527 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3528 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3529 { $$ = $2->addParamList( $6 ); }
[4d51835]3530 | '(' abstract_parameter_function ')' // redundant parenthesis
3531 { $$ = $2; }
3532 ;
[51b73452]3533
3534array_parameter_dimension:
[4d51835]3535 // Only the first dimension can be empty or have qualifiers.
3536 array_parameter_1st_dimension
3537 | array_parameter_1st_dimension multi_array_dimension
3538 { $$ = $1->addArray( $2 ); }
3539 | multi_array_dimension
3540 ;
[51b73452]3541
[c11e31c]3542// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3543//
[de62360d]3544// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3545// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3546
3547array_parameter_1st_dimension:
[2871210]3548 '[' ']'
[4d51835]3549 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3550 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3551 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3552 { $$ = DeclarationNode::newVarArray( $3 ); }
3553 | '[' push type_qualifier_list pop ']'
3554 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3555 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3556 | '[' push type_qualifier_list assignment_expression pop ']'
3557 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3558 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3559 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3560 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3561 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3562 ;
[b87a5ed]3563
[c0aa336]3564// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3565//
[c0aa336]3566// struct S {
3567// int;
3568// int *;
3569// int [10];
3570// int (*)();
3571// };
[51b73452]3572
3573variable_abstract_declarator:
[4d51835]3574 variable_abstract_ptr
3575 | variable_abstract_array attribute_list_opt
[1db21619]3576 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3577 | variable_abstract_function attribute_list_opt
[1db21619]3578 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3579 ;
[51b73452]3580
3581variable_abstract_ptr:
[dd51906]3582 ptrref_operator
[ce8c12f]3583 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3584 | ptrref_operator type_qualifier_list
[ce8c12f]3585 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3586 | ptrref_operator variable_abstract_declarator
[ce8c12f]3587 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3588 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3589 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3590 | '(' variable_abstract_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3591 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3592 ;
[51b73452]3593
3594variable_abstract_array:
[4d51835]3595 array_dimension
3596 | '(' variable_abstract_ptr ')' array_dimension
3597 { $$ = $2->addArray( $4 ); }
3598 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3599 { $$ = $2->addArray( $4 ); }
3600 | '(' variable_abstract_array ')' // redundant parenthesis
3601 { $$ = $2; }
3602 ;
[51b73452]3603
3604variable_abstract_function:
[c0a33d2]3605 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3606 { $$ = $2->addParamList( $6 ); }
[4d51835]3607 | '(' variable_abstract_function ')' // redundant parenthesis
3608 { $$ = $2; }
3609 ;
[b87a5ed]3610
[de62360d]3611// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3612// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3613
[c0aa336]3614cfa_identifier_parameter_declarator_tuple: // CFA
3615 cfa_identifier_parameter_declarator_no_tuple
3616 | cfa_abstract_tuple
3617 | type_qualifier_list cfa_abstract_tuple
[4d51835]3618 { $$ = $2->addQualifiers( $1 ); }
3619 ;
[b87a5ed]3620
[c0aa336]3621cfa_identifier_parameter_declarator_no_tuple: // CFA
3622 cfa_identifier_parameter_ptr
3623 | cfa_identifier_parameter_array
[4d51835]3624 ;
[b87a5ed]3625
[c0aa336]3626cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3627 // No SUE declaration in parameter list.
3628 ptrref_operator type_specifier_nobody
[ce8c12f]3629 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3630 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3631 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3632 | ptrref_operator cfa_abstract_function
[ce8c12f]3633 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3634 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3635 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3636 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3637 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3638 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3639 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3640 ;
[b87a5ed]3641
[c0aa336]3642cfa_identifier_parameter_array: // CFA
[de62360d]3643 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3644 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3645 '[' ']' type_specifier_nobody
[2871210]3646 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3647 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3648 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3649 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3650 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3651 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3652 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3653 | multi_array_dimension type_specifier_nobody
[4d51835]3654 { $$ = $2->addNewArray( $1 ); }
[9059213]3655
[c0aa336]3656 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3657 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3658 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3659 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3660 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3661 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3662 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3663 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3664 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3665 { $$ = $2->addNewArray( $1 ); }
3666 ;
[51b73452]3667
[c0aa336]3668cfa_array_parameter_1st_dimension:
[c0a33d2]3669 '[' push type_qualifier_list '*' pop ']' // remaining C99
3670 { $$ = DeclarationNode::newVarArray( $3 ); }
3671 | '[' push type_qualifier_list assignment_expression pop ']'
3672 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3673 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3674 // declaration_qualifier_list must be used because of shift/reduce conflict with
3675 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3676 // appear in this context.
[c0a33d2]3677 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3678 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3679 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3680 ;
[b87a5ed]3681
[de62360d]3682// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3683// identifier to which the type applies, e.g.:
[c11e31c]3684//
[b87a5ed]3685// [int] f( int ); // abstract variable parameter; no parameter name specified
3686// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3687//
3688// These rules need LR(3):
3689//
[c0aa336]3690// cfa_abstract_tuple identifier_or_type_name
[40de461]3691// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3692//
3693// since a function return type can be syntactically identical to a tuple type:
3694//
[b87a5ed]3695// [int, int] t;
3696// [int, int] f( int );
[c11e31c]3697//
[2871210]3698// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3699// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3700// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3701// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3702
[c0aa336]3703cfa_abstract_declarator_tuple: // CFA
3704 cfa_abstract_tuple
3705 | type_qualifier_list cfa_abstract_tuple
[4d51835]3706 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3707 | cfa_abstract_declarator_no_tuple
[4d51835]3708 ;
[b87a5ed]3709
[c0aa336]3710cfa_abstract_declarator_no_tuple: // CFA
3711 cfa_abstract_ptr
3712 | cfa_abstract_array
[4d51835]3713 ;
[b87a5ed]3714
[c0aa336]3715cfa_abstract_ptr: // CFA
[dd51906]3716 ptrref_operator type_specifier
[ce8c12f]3717 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3718 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3719 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3720 | ptrref_operator cfa_abstract_function
[ce8c12f]3721 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3722 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3723 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3724 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3725 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3726 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3727 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3728 ;
[b87a5ed]3729
[c0aa336]3730cfa_abstract_array: // CFA
[de62360d]3731 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3732 // empty (void) function return type.
[2871210]3733 '[' ']' type_specifier
[2298f728]3734 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3735 | '[' ']' multi_array_dimension type_specifier
[2298f728]3736 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3737 | multi_array_dimension type_specifier
3738 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3739 | '[' ']' cfa_abstract_ptr
[2298f728]3740 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3741 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3742 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3743 | multi_array_dimension cfa_abstract_ptr
[4d51835]3744 { $$ = $2->addNewArray( $1 ); }
3745 ;
[b87a5ed]3746
[c0aa336]3747cfa_abstract_tuple: // CFA
[c0a33d2]3748 '[' push cfa_abstract_parameter_list pop ']'
3749 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3750 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3751 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3752 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3753 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3754 ;
[b87a5ed]3755
[c0aa336]3756cfa_abstract_function: // CFA
[40de461]3757// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3758// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3759 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3760 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3761 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3762 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3763 ;
[b87a5ed]3764
[de62360d]3765// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3766// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3767//
[de62360d]3768// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3769// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3770//
3771// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3772// prototype-format parameter type declarators) is an obsolescent feature."
3773//
[de62360d]3774// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3775// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3776
[c11e31c]3777//************************* MISCELLANEOUS ********************************
[51b73452]3778
[b87a5ed]3779comma_opt: // redundant comma
[4d51835]3780 // empty
3781 | ','
3782 ;
[51b73452]3783
[5a51798]3784default_initializer_opt:
[4d51835]3785 // empty
[58dd019]3786 { $$ = nullptr; }
[4d51835]3787 | '=' assignment_expression
3788 { $$ = $2; }
3789 ;
[51b73452]3790
3791%%
[a1c9ddd]3792
[c11e31c]3793// ----end of grammar----
[51b73452]3794
[c11e31c]3795// Local Variables: //
[b87a5ed]3796// mode: c++ //
[de62360d]3797// tab-width: 4 //
[c11e31c]3798// compile-command: "make install" //
3799// End: //
Note: See TracBrowser for help on using the repository browser.