source: src/Parser/parser.yy@ affb51b

ADT ast-experimental
Last change on this file since affb51b was b2ddaf3, checked in by Peter A. Buhr <pabuhr@…>, 3 years ago

fix parsing bug for attribute at the end of a distribution list

  • Property mode set to 100644
File size: 162.4 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
[b2ddaf3]12// Last Modified On : Sat Oct 8 08:21:18 2022
13// Update Count : 5709
[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
[ae2f2ae]59// lex uses __null in a boolean context, it's fine.
[0bd46fd]60#ifdef __clang__
[09f34a84]61#pragma GCC diagnostic ignored "-Wparentheses-equality"
[0bd46fd]62#endif
[ae2f2ae]63
[cbaee0d]64extern DeclarationNode * parseTree;
[8b7ee09]65extern LinkageSpec::Spec linkage;
[0da3e2c]66extern TypedefTable typedefTable;
67
[408ab79]68stack<LinkageSpec::Spec> linkageStack;
[7bf7fb9]69
[15697ff]70bool appendStr( string & to, string & from ) {
71 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]72 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]73 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
74 // easier to let the C compiler handle this case.
75 //
76 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
77 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
[efc8f3e]78 // e.g., u"a" U"b" L"c" is disallowed.
[15697ff]79
80 if ( from[0] != '"' ) { // encoding ?
81 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]82 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]83 yyerror( "non-matching string encodings for string-literal concatenation" );
84 return false; // parse error, must call YYERROR in action
[ea0c5e3]85 } else if ( from[1] == '8' ) {
86 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]87 } // if
88 } else {
[ea0c5e3]89 if ( from[1] == '8' ) { // move encoding to start
90 to = "u8" + to;
91 from.erase( 0, 1 ); // remove 2nd encoding
92 } else {
93 to = from[0] + to;
94 } // if
[15697ff]95 } // if
96 from.erase( 0, 1 ); // remove 2nd encoding
97 } // if
98 to += " " + from; // concatenated into single string
99 return true;
[7bf7fb9]100} // appendStr
[c0aa336]101
[d8454b9]102DeclarationNode * distAttr( DeclarationNode * typeSpec, DeclarationNode * declList ) {
103 // distribute declaration_specifier across all declared variables, e.g., static, const, but not __attribute__.
104 assert( declList );
[b2ddaf3]105 // printf( "distAttr1 typeSpec %p\n", typeSpec ); typeSpec->print( std::cout );
[d8454b9]106 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( typeSpec );
[b2ddaf3]107 // printf( "distAttr2 cl %p\n", cl ); cl->type->print( std::cout );
108 // cl->type->aggregate.name = cl->type->aggInst.aggregate->aggregate.name;
[d8454b9]109
[6d01d89]110 for ( cur = dynamic_cast<DeclarationNode *>( cur->get_next() ); cur != nullptr; cur = dynamic_cast<DeclarationNode *>( cur->get_next() ) ) {
[c0aa336]111 cl->cloneBaseType( cur );
112 } // for
113 declList->addType( cl );
[b2ddaf3]114 // printf( "distAttr3 declList %p\n", declList ); declList->print( std::cout, 0 );
[c0aa336]115 return declList;
116} // distAttr
117
118void distExt( DeclarationNode * declaration ) {
119 // distribute EXTENSION across all declarations
120 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
121 iter->set_extension( true );
122 } // for
123} // distExt
[fdca7c6]124
[e07caa2]125void distInl( DeclarationNode * declaration ) {
[5695645]126 // distribute INLINE across all declarations
[e07caa2]127 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
128 iter->set_inLine( true );
129 } // for
130} // distInl
131
[4c3ee8d]132void distQual( DeclarationNode * declaration, DeclarationNode * qualifiers ) {
[284da8c]133 // distribute qualifiers across all non-variable declarations in a distribution statemement
[4c3ee8d]134 for ( DeclarationNode * iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[284da8c]135 // SKULLDUGGERY: Distributions are parsed inside out, so qualifiers are added to declarations inside out. Since
136 // addQualifiers appends to the back of the list, the forall clauses are in the wrong order (right to left). To
137 // get the qualifiers in the correct order and still use addQualifiers (otherwise, 90% of addQualifiers has to
138 // be copied to add to front), the appropriate forall pointers are interchanged before calling addQualifiers.
139 DeclarationNode * clone = qualifiers->clone();
140 if ( qualifiers->type ) { // forall clause ? (handles SC)
141 if ( iter->type->kind == TypeData::Aggregate ) { // struct/union ?
142 swap( clone->type->forall, iter->type->aggregate.params );
143 iter->addQualifiers( clone );
144 } else if ( iter->type->kind == TypeData::AggregateInst && iter->type->aggInst.aggregate->aggregate.body ) { // struct/union ?
145 // Create temporary node to hold aggregate, call addQualifiers as above, then put nodes back together.
146 DeclarationNode newnode;
147 swap( newnode.type, iter->type->aggInst.aggregate );
148 swap( clone->type->forall, newnode.type->aggregate.params );
149 newnode.addQualifiers( clone );
150 swap( newnode.type, iter->type->aggInst.aggregate );
151 } else if ( iter->type->kind == TypeData::Function ) { // routines ?
152 swap( clone->type->forall, iter->type->forall );
153 iter->addQualifiers( clone );
154 } // if
155 } else { // just SC qualifiers
156 iter->addQualifiers( clone );
157 } // if
[4c3ee8d]158 } // for
[284da8c]159 delete qualifiers;
160} // distQual
[4c3ee8d]161
[c38ae92]162// There is an ambiguity for inline generic-routine return-types and generic routines.
163// forall( otype T ) struct S { int i; } bar( T ) {}
164// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
165// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]166// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
167// forall( otype T ) struct S { int T; };
168// forall( otype W ) bar( W ) {}
[c38ae92]169
170void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]171 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]172 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
173 declSpec->type->aggregate.params = nullptr;
174 } // if
175} // rebindForall
176
[60a8062]177string * build_postfix_name( string * name ) {
178 *name = string("__postfix_func_") + *name;
179 return name;
[dc7db63]180} // build_postfix_name
181
[f7e4db27]182DeclarationNode * fieldDecl( DeclarationNode * typeSpec, DeclarationNode * fieldList ) {
183 if ( ! fieldList ) { // field declarator ?
[553772b]184 if ( ! ( typeSpec->type && (typeSpec->type->kind == TypeData::Aggregate || typeSpec->type->kind == TypeData::Enum) ) ) {
[f7e4db27]185 stringstream ss;
[d8454b9]186 // printf( "fieldDecl1 typeSpec %p\n", typeSpec ); typeSpec->type->print( std::cout );
[f7e4db27]187 SemanticWarning( yylloc, Warning::SuperfluousDecl, ss.str().c_str() );
188 return nullptr;
189 } // if
[d8454b9]190 // printf( "fieldDecl2 typeSpec %p\n", typeSpec ); typeSpec->type->print( std::cout );
[f7e4db27]191 fieldList = DeclarationNode::newName( nullptr );
192 } // if
[d8454b9]193// return distAttr( typeSpec, fieldList ); // mark all fields in list
194
195 // printf( "fieldDecl3 typeSpec %p\n", typeSpec ); typeSpec->print( std::cout, 0 );
196 DeclarationNode * temp = distAttr( typeSpec, fieldList ); // mark all fields in list
197 // printf( "fieldDecl4 temp %p\n", temp ); temp->print( std::cout, 0 );
198 return temp;
[f7e4db27]199} // fieldDecl
200
[d78c238]201#define NEW_ZERO new ExpressionNode( build_constantInteger( *new string( "0" ) ) )
202#define NEW_ONE new ExpressionNode( build_constantInteger( *new string( "1" ) ) )
[52be5948]203#define UPDOWN( compop, left, right ) (compop == OperKinds::LThan || compop == OperKinds::LEThan ? left : right)
[4fee301]204#define MISSING_ANON_FIELD "Missing loop fields with an anonymous loop index is meaningless as loop index is unavailable in loop body."
205#define MISSING_LOW "Missing low value for up-to range so index is uninitialized."
206#define MISSING_HIGH "Missing high value for down-to range so index is uninitialized."
[d78c238]207
208ForCtrl * forCtrl( DeclarationNode * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
209 if ( index->initializer ) {
210 SemanticError( yylloc, "Direct initialization disallowed. Use instead: type var; initialization ~ comparison ~ increment." );
211 } // if
212 if ( index->next ) {
213 SemanticError( yylloc, "Multiple loop indexes disallowed in for-loop declaration." );
214 } // if
215 return new ForCtrl( index->addInitializer( new InitializerNode( start ) ),
216 // NULL comp/inc => leave blank
217 comp ? new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index->name ) ) ), comp ) ) : nullptr,
218 inc ? new ExpressionNode( build_binary_val( compop == OperKinds::LThan || compop == OperKinds::LEThan ? // choose += or -= for upto/downto
219 OperKinds::PlusAssn : OperKinds::MinusAssn, new ExpressionNode( build_varref( new string( *index->name ) ) ), inc ) ) : nullptr );
220} // forCtrl
221
[cc22003]222ForCtrl * forCtrl( ExpressionNode * type, string * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]223 ConstantExpr * constant = dynamic_cast<ConstantExpr *>(type->expr.get());
[0982a05]224 if ( constant && (constant->get_constant()->get_value() == "0" || constant->get_constant()->get_value() == "1") ) {
[ec3f9c8]225 type = new ExpressionNode( new CastExpr( maybeMoveBuild<Expression>(type), new BasicType( Type::Qualifiers(), BasicType::SignedInt ) ) );
[0982a05]226 } // if
[c99a0d1]227// type = new ExpressionNode( build_func( new ExpressionNode( build_varref( new string( "__for_control_index_constraints__" ) ) ), type ) );
[f271bdd]228 return new ForCtrl(
[5753b33]229 distAttr( DeclarationNode::newTypeof( type, true ), DeclarationNode::newName( index )->addInitializer( new InitializerNode( start ) ) ),
[2d2df9f]230 // NULL comp/inc => leave blank
[d78c238]231 comp ? new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index ) ) ), comp ) ) : nullptr,
[2d2df9f]232 inc ? new ExpressionNode( build_binary_val( compop == OperKinds::LThan || compop == OperKinds::LEThan ? // choose += or -= for upto/downto
[d78c238]233 OperKinds::PlusAssn : OperKinds::MinusAssn, new ExpressionNode( build_varref( new string( *index ) ) ), inc ) ) : nullptr );
[f271bdd]234} // forCtrl
235
[f1aeede]236ForCtrl * forCtrl( ExpressionNode * type, ExpressionNode * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]237 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(index->expr.get()) ) {
[f1aeede]238 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
[1dda8de]239 } else if ( CommaExpr * commaExpr = dynamic_cast<CommaExpr *>(index->expr.get()) ) {
[6d01d89]240 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(commaExpr->arg1 ) ) {
241 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
242 } else {
[3ca7ef3]243 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[6d01d89]244 } // if
[f1aeede]245 } else {
[3ca7ef3]246 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[f1aeede]247 } // if
[f271bdd]248} // forCtrl
249
[996c8ed]250static void IdentifierBeforeIdentifier( string & identifier1, string & identifier2, const char * kind ) {
251 SemanticError( yylloc, ::toString( "Adjacent identifiers \"", identifier1, "\" and \"", identifier2, "\" are not meaningful in a", kind, ".\n"
252 "Possible cause is misspelled type name or missing generic parameter." ) );
253} // IdentifierBeforeIdentifier
254
255static void IdentifierBeforeType( string & identifier, const char * kind ) {
256 SemanticError( yylloc, ::toString( "Identifier \"", identifier, "\" cannot appear before a ", kind, ".\n"
257 "Possible cause is misspelled storage/CV qualifier, misspelled typename, or missing generic parameter." ) );
258} // IdentifierBeforeType
259
[24711a3]260bool forall = false; // aggregate have one or more forall qualifiers ?
[d48e529]261
[201aeb9]262// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
263#define YYLLOC_DEFAULT(Cur, Rhs, N) \
264if ( N ) { \
265 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
266 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
267 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
268 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
269 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
270} else { \
271 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
272 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
273 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
274}
[51b73452]275%}
276
[15697ff]277%define parse.error verbose
278
[201aeb9]279// Types declaration for productions
[0982a05]280%union {
[a67b60e]281 Token tok;
282 ParseNode * pn;
283 ExpressionNode * en;
284 DeclarationNode * decl;
[312029a]285 AggregateDecl::Aggregate aggKey;
[07de76b]286 TypeDecl::Kind tclass;
[a67b60e]287 StatementNode * sn;
[135b431]288 WaitForStmt * wfs;
[e612146c]289 Expression * constant;
[473d1da0]290 CondCtl * ifctl;
[f271bdd]291 ForCtrl * fctl;
[cc22003]292 enum OperKinds compop;
[a67b60e]293 LabelNode * label;
294 InitializerNode * in;
295 OperKinds op;
296 std::string * str;
297 bool flag;
[307a732]298 CatchStmt::Kind catch_kind;
[d807ca28]299 GenericExpr * genexpr;
[a67b60e]300}
301
[c11e31c]302//************************* TERMINAL TOKENS ********************************
[51b73452]303
[c11e31c]304// keywords
[51b73452]305%token TYPEDEF
[a7c90d4]306%token EXTERN STATIC AUTO REGISTER
[ed9a1ae]307%token THREADLOCALGCC THREADLOCALC11 // GCC, C11
[a7c90d4]308%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
309%token NORETURN // C11
[51b73452]310%token CONST VOLATILE
[b87a5ed]311%token RESTRICT // C99
[a7c90d4]312%token ATOMIC // C11
[1f652a7]313%token FORALL MUTEX VIRTUAL VTABLE COERCE // CFA
[72457b6]314%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]315%token BOOL COMPLEX IMAGINARY // C99
[f1da02c]316%token INT128 UINT128 uuFLOAT80 uuFLOAT128 // GCC
[e15853c]317%token uFLOAT16 uFLOAT32 uFLOAT32X uFLOAT64 uFLOAT64X uFLOAT128 // GCC
[15f769c]318%token DECIMAL32 DECIMAL64 DECIMAL128 // GCC
[72457b6]319%token ZERO_T ONE_T // CFA
[1f652a7]320%token SIZEOF TYPEOF VALIST AUTO_TYPE // GCC
321%token OFFSETOF BASETYPEOF TYPEID // CFA
[51b73452]322%token ENUM STRUCT UNION
[c27fb59]323%token EXCEPTION // CFA
[553772b]324%token GENERATOR COROUTINE MONITOR THREAD // CFA
[a7c90d4]325%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[25744d2]326// %token RESUME // CFA
[1f652a7]327%token LABEL // GCC
[25744d2]328%token SUSPEND // CFA
[b87a5ed]329%token ATTRIBUTE EXTENSION // GCC
[51b73452]330%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[4744074]331%token CHOOSE FALLTHRU FALLTHROUGH WITH WHEN WAITFOR // CFA
332%token DISABLE ENABLE TRY THROW THROWRESUME AT // CFA
[b87a5ed]333%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
[a7c90d4]334%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
[51b73452]335
[c11e31c]336// names and constants: lexer differentiates between identifier and typedef names
[6e50a6b]337%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDIMname TYPEDEFname TYPEGENname
[9fb1367]338%token<tok> TIMEOUT WOR CATCH RECOVER CATCHRESUME FIXUP FINALLY // CFA
339%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
[61fc4f6]340%token<tok> DIRECTIVE
[1b29996]341// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
342// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
343// converted into the tuple index (.)(1). e.g., 3.x
[930f69e]344%token<tok> FLOATING_DECIMALconstant FLOATING_FRACTIONconstant FLOATINGconstant
[51b73452]345
[c11e31c]346// multi-character operators
[b87a5ed]347%token ARROW // ->
348%token ICR DECR // ++ --
349%token LS RS // << >>
350%token LE GE EQ NE // <= >= == !=
351%token ANDAND OROR // && ||
352%token ELLIPSIS // ...
353
[e5f2a67]354%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
[b87a5ed]355%token PLUSassign MINUSassign // += -=
356%token LSassign RSassign // <<= >>=
357%token ANDassign ERassign ORassign // &= ^= |=
[51b73452]358
[d69f4bb4]359%token ErangeUpEq ErangeDown ErangeDownEq // ~= -~ -~=
[e7aed49]360%token ATassign // @=
[097e2b0]361
[e16eb460]362%type<tok> identifier identifier_at identifier_or_type_name attr_name
[5b2edbc]363%type<tok> quasi_keyword
[ab57786]364%type<constant> string_literal
365%type<str> string_literal_list
[51b73452]366
[c11e31c]367// expressions
[d1625f8]368%type<en> constant
[b87a5ed]369%type<en> tuple tuple_expression_list
[f9c3100]370%type<op> ptrref_operator unary_operator assignment_operator simple_assignment_operator compound_assignment_operator
[b87a5ed]371%type<en> primary_expression postfix_expression unary_expression
[4a063df]372%type<en> cast_expression_list cast_expression exponential_expression multiplicative_expression additive_expression
[994d080]373%type<en> shift_expression relational_expression equality_expression
374%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
375%type<en> logical_AND_expression logical_OR_expression
376%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]377%type<en> comma_expression comma_expression_opt
[e16eb460]378%type<en> argument_expression_list_opt argument_expression_list argument_expression default_initializer_opt
[473d1da0]379%type<ifctl> conditional_declaration
[6d01d89]380%type<fctl> for_control_expression for_control_expression_list
[d78c238]381%type<compop> updown updowneq downupdowneq
[51b73452]382%type<en> subrange
[c0aa336]383%type<decl> asm_name_opt
[67d4e37]384%type<en> asm_operands_opt asm_operands_list asm_operand
[7f5566b]385%type<label> label_list
[d1625f8]386%type<en> asm_clobbers_list_opt
[7f5566b]387%type<flag> asm_volatile_opt
[cbce272]388%type<en> handler_predicate_opt
[67d4e37]389%type<genexpr> generic_association generic_assoc_list
[51b73452]390
[c11e31c]391// statements
[9bd6105]392%type<sn> statement labeled_statement compound_statement
393%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]394%type<sn> selection_statement if_statement
[6a276a0]395%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]396%type<en> case_value
397%type<sn> case_clause case_value_list case_label case_label_list
[efc8f3e]398%type<sn> iteration_statement jump_statement
[9bd6105]399%type<sn> expression_statement asm_statement
[c453ac4]400%type<sn> with_statement
401%type<en> with_clause_opt
[51d6d6a]402%type<sn> exception_statement handler_clause finally_clause
403%type<catch_kind> handler_key
[b6b3c42]404%type<sn> mutex_statement
[9bd6105]405%type<en> when_clause when_clause_opt waitfor timeout
[135b431]406%type<sn> waitfor_statement
[51d6d6a]407%type<wfs> waitfor_clause
[51b73452]408
[c11e31c]409// declarations
[c0aa336]410%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
411%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
412%type<decl> abstract_parameter_declaration
[51b73452]413
[e307e12]414%type<aggKey> aggregate_key aggregate_data aggregate_control
[d0ffed1]415%type<decl> aggregate_type aggregate_type_nobody
[51b73452]416
[9997fee]417%type<decl> assertion assertion_list assertion_list_opt
[51b73452]418
[25744d2]419%type<en> bit_subrange_size_opt bit_subrange_size
[51b73452]420
[84d58c5]421%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[1f652a7]422%type<decl> vtable vtable_opt default_opt
[51b73452]423
[4040425]424%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]425
426%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]427%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]428
[d0ffed1]429%type<decl> elaborated_type elaborated_type_nobody
[51b73452]430
[d0ffed1]431%type<decl> enumerator_list enum_type enum_type_nobody
[374cb117]432%type<in> enumerator_value_opt
[51b73452]433
[3d56d15b]434%type<decl> external_definition external_definition_list external_definition_list_opt
435
436%type<decl> exception_declaration
[51b73452]437
[e07caa2]438%type<decl> field_declaration_list_opt field_declaration field_declaring_list_opt field_declarator field_abstract_list_opt field_abstract
[679e644]439%type<en> field field_name_list field_name fraction_constants_opt
[51b73452]440
[4d51835]441%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]442
[d3bc0ad]443%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
444%type<decl> identifier_list
[51b73452]445
[c0aa336]446%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
447%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
448%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]449
[c0aa336]450%type<decl> cfa_array_parameter_1st_dimension
[51b73452]451
[679e644]452%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list cfa_field_abstract_list
[c0aa336]453%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]454
[c0aa336]455%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
456%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]457
[40de461]458%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]459
[c0aa336]460%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]461
[b9be000b]462%type<decl> c_declaration static_assert
[c0aa336]463%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]464%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]465
[2a8427c6]466%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]467
[2871210]468%type<decl> paren_identifier paren_type
[51b73452]469
[0da3e2c]470%type<decl> storage_class storage_class_list
[51b73452]471
[d0ffed1]472%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]473
[5a51798]474%type<tclass> type_class new_type_class
[51b73452]475%type<decl> type_declarator type_declarator_name type_declaring_list
476
[84d58c5]477%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
[f9c3100]478%type<decl> typedef_name typedef_declaration typedef_expression
[c0aa336]479
480%type<decl> variable_type_redeclarator type_ptr type_array type_function
481
482%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]483
[84d58c5]484%type<decl> type type_no_function
485%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]486
[284da8c]487%type<en> type_parameters_opt type_list
[51b73452]488
[a16a7ec]489%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[f9c3100]490%type<decl> type_specifier type_specifier_nobody
[51b73452]491
[c0aa336]492%type<decl> variable_declarator variable_ptr variable_array variable_function
493%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]494
[f9c3100]495%type<decl> attribute_list_opt attribute_list attribute attribute_name_list attribute_name
[1db21619]496
[c11e31c]497// initializers
[7fdb94e1]498%type<in> initializer initializer_list_opt initializer_opt
[51b73452]499
[c11e31c]500// designators
[51b73452]501%type<en> designator designator_list designation
502
503
[65d6de4]504// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
505// .---------. matches IF '(' comma_expression ')' statement . (reduce)
506// if ( C ) S1 else S2
507// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]508// Similar issues exit with the waitfor statement.
[51b73452]509
[1efa1e1]510// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
511// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[9fb1367]512%precedence THEN // rule precedence for IF/WAITFOR statement
513%precedence WOR // token precedence for start of WOR in WAITFOR statement
514%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
515%precedence CATCH // token precedence for start of TIMEOUT in WAITFOR statement
516%precedence RECOVER // token precedence for start of TIMEOUT in WAITFOR statement
517%precedence CATCHRESUME // token precedence for start of TIMEOUT in WAITFOR statement
518%precedence FIXUP // token precedence for start of TIMEOUT in WAITFOR statement
519%precedence FINALLY // token precedence for start of TIMEOUT in WAITFOR statement
520%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
521
[51b73452]522
[65d6de4]523// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
524// forall( otype T ) struct Foo { T v; };
525// .-----. matches pointer to function returning a generic (which is impossible without a type)
526// Foo ( *fp )( int );
527// `---' matches start of TYPEGENname '('
[fc20514]528// must be:
[a16a7ec]529// Foo( int ) ( *fp )( int );
[fc20514]530// The same problem occurs here:
531// forall( otype T ) struct Foo { T v; } ( *fp )( int );
532// must be:
533// forall( otype T ) struct Foo { T v; } ( int ) ( *fp )( int );
[65d6de4]534
535// Order of these lines matters (low-to-high precedence).
536%precedence TYPEGENname
[284da8c]537%precedence '}'
[65d6de4]538%precedence '('
539
[c786e1d]540// %precedence RESUME
541// %precedence '{'
542// %precedence ')'
543
[f38e7d7]544%locations // support location tracking for error messages
[930f69e]545
[b87a5ed]546%start translation_unit // parse-tree root
[51b73452]547
548%%
[c11e31c]549//************************* Namespace Management ********************************
550
[3d26610]551// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
552// which are lexically identical.
[c11e31c]553//
[3d26610]554// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
555// foo f; // to allow it to appear in this context
[c11e31c]556//
[3d26610]557// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
558// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
559// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
560// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
561// must be distinguished by the lexical scanner.
[c11e31c]562//
[3d26610]563// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
564// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
565// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
566// each context that introduces a name scope, a new level is created in the type table and that level is popped on
567// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
568// This requires distinguishing between type names that are local to the current declaration scope and those that
569// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]570//
[3d26610]571// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
572// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
573// around the list separator.
574//
575// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
576// push pop push pop
[51b73452]577
578push:
[ab57786]579 { typedefTable.enterScope(); }
[4d51835]580 ;
[51b73452]581
582pop:
[ab57786]583 { typedefTable.leaveScope(); }
[4d51835]584 ;
[51b73452]585
[c11e31c]586//************************* CONSTANTS ********************************
[51b73452]587
588constant:
[de62360d]589 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]590 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]591 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
592 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]593 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
594 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]595 ;
[51b73452]596
[5b2edbc]597quasi_keyword: // CFA
598 TIMEOUT
599 | WOR
[9fb1367]600 | CATCH
601 | RECOVER
602 | CATCHRESUME
603 | FIXUP
604 | FINALLY
[5b2edbc]605 ;
606
[033ff37]607identifier:
[4d51835]608 IDENTIFIER
[5b2edbc]609 | quasi_keyword
[e16eb460]610 ;
611
612identifier_at:
613 identifier
[679e644]614 | '@' // CFA
615 { Token tok = { new string( DeclarationNode::anonymous.newName() ), yylval.tok.loc }; $$ = tok; }
[4d51835]616 ;
[51b73452]617
[ab57786]618string_literal:
619 string_literal_list { $$ = build_constantStr( *$1 ); }
620 ;
621
[b87a5ed]622string_literal_list: // juxtaposed strings are concatenated
[ab57786]623 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]624 | string_literal_list STRINGliteral
625 {
[15697ff]626 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]627 delete $2; // allocated by lexer
[ab57786]628 $$ = $1; // conversion from tok to str
[7bf7fb9]629 }
[4d51835]630 ;
[51b73452]631
[c11e31c]632//************************* EXPRESSIONS ********************************
[51b73452]633
634primary_expression:
[4d51835]635 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]636 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]637 | quasi_keyword
638 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[6e50a6b]639 | TYPEDIMname // CFA, generic length argument
640 // { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( DeclarationNode::newFromTypedef( $1 ) ) ) ); }
641 // { $$ = new ExpressionNode( build_varref( $1 ) ); }
642 { $$ = new ExpressionNode( build_dimensionref( $1 ) ); }
[1b29996]643 | tuple
[4d51835]644 | '(' comma_expression ')'
645 { $$ = $2; }
646 | '(' compound_statement ')' // GCC, lambda expression
[408ab79]647 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast<CompoundStmt *>(maybeMoveBuild<Statement>($2) ) ) ); }
[033ff37]648 | type_name '.' identifier // CFA, nested type
[b0d9ff7]649 { $$ = new ExpressionNode( build_qualified_expr( $1, build_varref( $3 ) ) ); }
[679e644]650 | type_name '.' '[' field_name_list ']' // CFA, nested type / tuple field selector
[203c667]651 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]652 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]653 {
654 // add the missing control expression to the GenericExpr and return it
655 $5->control = maybeMoveBuild<Expression>( $3 );
656 $$ = new ExpressionNode( $5 );
657 }
[c786e1d]658 // | RESUME '(' comma_expression ')'
659 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
660 // | RESUME '(' comma_expression ')' compound_statement
661 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
[afe9e45]662 | IDENTIFIER IDENTIFIER // syntax error
[996c8ed]663 { IdentifierBeforeIdentifier( *$1.str, *$2.str, "n expression" ); $$ = nullptr; }
664 | IDENTIFIER type_qualifier // syntax error
665 { IdentifierBeforeType( *$1.str, "type qualifier" ); $$ = nullptr; }
666 | IDENTIFIER storage_class // syntax error
667 { IdentifierBeforeType( *$1.str, "storage class" ); $$ = nullptr; }
668 | IDENTIFIER basic_type_name // syntax error
669 { IdentifierBeforeType( *$1.str, "type" ); $$ = nullptr; }
670 | IDENTIFIER TYPEDEFname // syntax error
671 { IdentifierBeforeType( *$1.str, "type" ); $$ = nullptr; }
672 | IDENTIFIER TYPEGENname // syntax error
673 { IdentifierBeforeType( *$1.str, "type" ); $$ = nullptr; }
[24c3b67]674 ;
675
676generic_assoc_list: // C11
[d807ca28]677 generic_association
[24c3b67]678 | generic_assoc_list ',' generic_association
[d807ca28]679 {
680 // steal the association node from the singleton and delete the wrapper
681 $1->associations.splice($1->associations.end(), $3->associations);
682 delete $3;
683 $$ = $1;
684 }
[24c3b67]685 ;
686
687generic_association: // C11
688 type_no_function ':' assignment_expression
[d807ca28]689 {
690 // create a GenericExpr wrapper with one association pair
[408ab79]691 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>( $3 ) } } );
[d807ca28]692 }
[24c3b67]693 | DEFAULT ':' assignment_expression
[408ab79]694 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>( $3 ) } } ); }
[4d51835]695 ;
[51b73452]696
697postfix_expression:
[4d51835]698 primary_expression
[1d71208]699 | postfix_expression '[' assignment_expression ',' tuple_expression_list ']'
700 // Historic, transitional: Disallow commas in subscripts.
701 // Switching to this behaviour may help check if a C compatibilty case uses comma-exprs in subscripts.
702 // Current: Commas in subscripts make tuples.
703 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $5 ) ) )) ) ); }
[7fdb94e1]704 | postfix_expression '[' assignment_expression ']'
[c6b1105]705 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]706 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
707 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
708 // equivalent to the old x[i,j].
[7fdb94e1]709 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[d824715]710 | constant '[' assignment_expression ']' // 3[a], 'a'[a], 3.5[a]
711 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
712 | string_literal '[' assignment_expression ']' // "abc"[3], 3["abc"]
713 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, new ExpressionNode( $1 ), $3 ) ); }
[cbbd8fd7]714 | postfix_expression '{' argument_expression_list_opt '}' // CFA, constructor call
[bd3d9e4]715 {
716 Token fn;
717 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
718 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
719 }
[cbbd8fd7]720 | postfix_expression '(' argument_expression_list_opt ')'
[d1625f8]721 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[948fdef]722 | postfix_expression '`' identifier // CFA, postfix call
[60a8062]723 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]724 | constant '`' identifier // CFA, postfix call
[60a8062]725 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]726 | string_literal '`' identifier // CFA, postfix call
[60a8062]727 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), new ExpressionNode( $1 ) ) ); }
[033ff37]728 | postfix_expression '.' identifier
[d1625f8]729 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]730 | postfix_expression '.' INTEGERconstant // CFA, tuple index
731 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]732 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
733 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[679e644]734 | postfix_expression '.' '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]735 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[e307e12]736 | postfix_expression '.' aggregate_control
[312029a]737 { $$ = new ExpressionNode( build_keyword_cast( $3, $1 ) ); }
[033ff37]738 | postfix_expression ARROW identifier
[ee27df2]739 { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); }
[861799c7]740 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
741 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[679e644]742 | postfix_expression ARROW '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]743 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]744 | postfix_expression ICR
[d1625f8]745 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]746 | postfix_expression DECR
[d1625f8]747 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]748 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]749 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]750 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]751 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[cbbd8fd7]752 | '^' primary_expression '{' argument_expression_list_opt '}' // CFA, destructor call
[097e2b0]753 {
[9706554]754 Token fn;
[ecb27a7]755 fn.str = new string( "^?{}" ); // location undefined
756 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]757 }
[4d51835]758 ;
[51b73452]759
[cbbd8fd7]760argument_expression_list_opt:
[757ffed]761 // empty
762 { $$ = nullptr; }
[e16eb460]763 | argument_expression_list
764 ;
765
766argument_expression_list:
767 argument_expression
[cbbd8fd7]768 | argument_expression_list_opt ',' argument_expression
[4a063df]769 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]770 ;
[51b73452]771
772argument_expression:
[757ffed]773 '@' // CFA, default parameter
[679e644]774 { SemanticError( yylloc, "Default parameter for argument is currently unimplemented." ); $$ = nullptr; }
775 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]776 | assignment_expression
777 ;
[b87a5ed]778
[679e644]779field_name_list: // CFA, tuple field selector
[4d51835]780 field
[4a063df]781 | field_name_list ',' field { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]782 ;
[b87a5ed]783
784field: // CFA, tuple field selector
[faddbd8]785 field_name
[930f69e]786 | FLOATING_DECIMALconstant field
787 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[679e644]788 | FLOATING_DECIMALconstant '[' field_name_list ']'
[7fdb94e1]789 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]790 | field_name '.' field
[bf32bb8]791 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]792 | field_name '.' '[' field_name_list ']'
[7fdb94e1]793 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]794 | field_name ARROW field
[bf32bb8]795 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]796 | field_name ARROW '[' field_name_list ']'
[7fdb94e1]797 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]798 ;
[51b73452]799
[faddbd8]800field_name:
[df22130]801 INTEGERconstant fraction_constants_opt
[8780e30]802 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]803 | FLOATINGconstant fraction_constants_opt
[8780e30]804 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[e16eb460]805 | identifier_at fraction_constants_opt // CFA, allow anonymous fields
[4cb935e]806 {
[84d58c5]807 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
808 }
[1b29996]809 ;
810
[df22130]811fraction_constants_opt:
[1b29996]812 // empty
[8780e30]813 { $$ = nullptr; }
[df22130]814 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]815 {
[930f69e]816 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]817 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
818 }
[faddbd8]819 ;
820
[51b73452]821unary_expression:
[4d51835]822 postfix_expression
[c6b1105]823 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
824 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]825 | constant
[ab57786]826 | string_literal
[d1625f8]827 { $$ = new ExpressionNode( $1 ); }
[4d51835]828 | EXTENSION cast_expression // GCC
[e04ef3a]829 { $$ = $2->set_extension( true ); }
[c6b1105]830 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
831 // { * X; } // dereference X
832 // { * int X; } // CFA declaration of pointer to int
[51e076e]833 | ptrref_operator cast_expression // CFA
[9706554]834 {
835 switch ( $1 ) {
[d9e2280]836 case OperKinds::AddressOf:
[408ab79]837 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) );
[9706554]838 break;
[d9e2280]839 case OperKinds::PointTo:
[d1625f8]840 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]841 break;
[5809461]842 case OperKinds::And:
[408ab79]843 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) ) );
[5809461]844 break;
[9706554]845 default:
846 assert( false );
847 }
848 }
[4d51835]849 | unary_operator cast_expression
[d1625f8]850 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]851 | ICR unary_expression
[d1625f8]852 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]853 | DECR unary_expression
[d1625f8]854 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]855 | SIZEOF unary_expression
[408ab79]856 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[84d58c5]857 | SIZEOF '(' type_no_function ')'
[db70fe4]858 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]859 | ALIGNOF unary_expression // GCC, variable alignment
[408ab79]860 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[a2e0687]861 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]862 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[033ff37]863 | OFFSETOF '(' type_no_function ',' identifier ')'
[d1625f8]864 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[1f652a7]865 | TYPEID '(' type_no_function ')'
866 {
867 SemanticError( yylloc, "typeid name is currently unimplemented." ); $$ = nullptr;
868 // $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) );
869 }
[4d51835]870 ;
[51b73452]871
[dd51906]872ptrref_operator:
[d9e2280]873 '*' { $$ = OperKinds::PointTo; }
874 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]875 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]876 | ANDAND { $$ = OperKinds::And; }
[dd51906]877 ;
878
[51b73452]879unary_operator:
[d9e2280]880 '+' { $$ = OperKinds::UnPlus; }
881 | '-' { $$ = OperKinds::UnMinus; }
882 | '!' { $$ = OperKinds::Neg; }
883 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]884 ;
[51b73452]885
886cast_expression:
[4d51835]887 unary_expression
[84d58c5]888 | '(' type_no_function ')' cast_expression
[d1625f8]889 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[e307e12]890 | '(' aggregate_control '&' ')' cast_expression // CFA
[312029a]891 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[24711a3]892 | '(' aggregate_control '*' ')' cast_expression // CFA
893 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[fae90d5f]894 | '(' VIRTUAL ')' cast_expression // CFA
[408ab79]895 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]896 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[408ab79]897 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $5 ), maybeMoveBuildType( $3 ) ) ); }
[1528a2c]898 | '(' RETURN type_no_function ')' cast_expression // CFA
899 { SemanticError( yylloc, "Return cast is currently unimplemented." ); $$ = nullptr; }
900 | '(' COERCE type_no_function ')' cast_expression // CFA
901 { SemanticError( yylloc, "Coerce cast is currently unimplemented." ); $$ = nullptr; }
902 | '(' qualifier_cast_list ')' cast_expression // CFA
903 { SemanticError( yylloc, "Qualifier cast is currently unimplemented." ); $$ = nullptr; }
[84d58c5]904// | '(' type_no_function ')' tuple
[1b29996]905// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]906 ;
[51b73452]907
[1528a2c]908qualifier_cast_list:
909 cast_modifier type_qualifier_name
910 | cast_modifier MUTEX
911 | qualifier_cast_list cast_modifier type_qualifier_name
912 | qualifier_cast_list cast_modifier MUTEX
913 ;
914
915cast_modifier:
916 '-'
917 | '+'
918 ;
919
[994d080]920exponential_expression:
[4d51835]921 cast_expression
[994d080]922 | exponential_expression '\\' cast_expression
[e5f2a67]923 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]924 ;
925
926multiplicative_expression:
927 exponential_expression
928 | multiplicative_expression '*' exponential_expression
[d1625f8]929 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]930 | multiplicative_expression '/' exponential_expression
[d1625f8]931 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]932 | multiplicative_expression '%' exponential_expression
[d1625f8]933 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]934 ;
[51b73452]935
936additive_expression:
[4d51835]937 multiplicative_expression
938 | additive_expression '+' multiplicative_expression
[d1625f8]939 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]940 | additive_expression '-' multiplicative_expression
[d1625f8]941 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]942 ;
[51b73452]943
944shift_expression:
[4d51835]945 additive_expression
946 | shift_expression LS additive_expression
[d1625f8]947 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]948 | shift_expression RS additive_expression
[d1625f8]949 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]950 ;
[51b73452]951
952relational_expression:
[4d51835]953 shift_expression
954 | relational_expression '<' shift_expression
[d1625f8]955 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]956 | relational_expression '>' shift_expression
[d1625f8]957 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]958 | relational_expression LE shift_expression
[d1625f8]959 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]960 | relational_expression GE shift_expression
[d1625f8]961 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]962 ;
[51b73452]963
964equality_expression:
[4d51835]965 relational_expression
966 | equality_expression EQ relational_expression
[d1625f8]967 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]968 | equality_expression NE relational_expression
[d1625f8]969 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]970 ;
[51b73452]971
972AND_expression:
[4d51835]973 equality_expression
974 | AND_expression '&' equality_expression
[d1625f8]975 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]976 ;
[51b73452]977
978exclusive_OR_expression:
[4d51835]979 AND_expression
980 | exclusive_OR_expression '^' AND_expression
[d1625f8]981 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]982 ;
[51b73452]983
984inclusive_OR_expression:
[4d51835]985 exclusive_OR_expression
986 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]987 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]988 ;
[51b73452]989
990logical_AND_expression:
[4d51835]991 inclusive_OR_expression
992 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]993 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]994 ;
[51b73452]995
996logical_OR_expression:
[4d51835]997 logical_AND_expression
998 | logical_OR_expression OROR logical_AND_expression
[d1625f8]999 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]1000 ;
[51b73452]1001
1002conditional_expression:
[4d51835]1003 logical_OR_expression
1004 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]1005 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]1006 // FIX ME: computes $1 twice
[4d51835]1007 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]1008 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]1009 ;
[51b73452]1010
1011constant_expression:
[4d51835]1012 conditional_expression
1013 ;
[51b73452]1014
1015assignment_expression:
[4d51835]1016 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
1017 conditional_expression
1018 | unary_expression assignment_operator assignment_expression
[9867cdb]1019 {
[25744d2]1020// if ( $2 == OperKinds::AtAssn ) {
1021// SemanticError( yylloc, "C @= assignment is currently unimplemented." ); $$ = nullptr;
1022// } else {
[9867cdb]1023 $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) );
[25744d2]1024// } // if
[9867cdb]1025 }
[7fdb94e1]1026 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]1027 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]1028 ;
[51b73452]1029
1030assignment_expression_opt:
[4d51835]1031 // empty
[d1625f8]1032 { $$ = nullptr; }
[4d51835]1033 | assignment_expression
1034 ;
[b87a5ed]1035
[9706554]1036assignment_operator:
[f9c3100]1037 simple_assignment_operator
1038 | compound_assignment_operator
1039 ;
1040
1041simple_assignment_operator:
[d9e2280]1042 '=' { $$ = OperKinds::Assign; }
[f9c3100]1043 | ATassign { $$ = OperKinds::AtAssn; } // CFA
1044 ;
1045
1046compound_assignment_operator:
1047 EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]1048 | MULTassign { $$ = OperKinds::MulAssn; }
1049 | DIVassign { $$ = OperKinds::DivAssn; }
1050 | MODassign { $$ = OperKinds::ModAssn; }
1051 | PLUSassign { $$ = OperKinds::PlusAssn; }
1052 | MINUSassign { $$ = OperKinds::MinusAssn; }
1053 | LSassign { $$ = OperKinds::LSAssn; }
1054 | RSassign { $$ = OperKinds::RSAssn; }
1055 | ANDassign { $$ = OperKinds::AndAssn; }
1056 | ERassign { $$ = OperKinds::ERAssn; }
1057 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]1058 ;
[9706554]1059
[b87a5ed]1060tuple: // CFA, tuple
[de62360d]1061 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]1062 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]1063// '[' ']'
1064// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]1065// | '[' push assignment_expression pop ']'
[1b29996]1066// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]1067 '[' ',' tuple_expression_list ']'
1068 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
1069 | '[' push assignment_expression pop ',' tuple_expression_list ']'
[4a063df]1070 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $6 ) ) )); }
[4d51835]1071 ;
[51b73452]1072
1073tuple_expression_list:
[0a6d8204]1074 assignment_expression
1075 | '@' // CFA
1076 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
1077 | tuple_expression_list ',' assignment_expression
[4a063df]1078 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[0a6d8204]1079 | tuple_expression_list ',' '@'
1080 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
[4d51835]1081 ;
[51b73452]1082
1083comma_expression:
[4d51835]1084 assignment_expression
[9706554]1085 | comma_expression ',' assignment_expression
[408ab79]1086 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1087 ;
[51b73452]1088
1089comma_expression_opt:
[4d51835]1090 // empty
[58dd019]1091 { $$ = nullptr; }
[4d51835]1092 | comma_expression
1093 ;
[51b73452]1094
[c11e31c]1095//*************************** STATEMENTS *******************************
[51b73452]1096
1097statement:
[4d51835]1098 labeled_statement
1099 | compound_statement
[c0a33d2]1100 | expression_statement
[4d51835]1101 | selection_statement
1102 | iteration_statement
1103 | jump_statement
[8b47e50]1104 | with_statement
[b6b3c42]1105 | mutex_statement
[5b2edbc]1106 | waitfor_statement
[4d51835]1107 | exception_statement
[2a8427c6]1108 | enable_disable_statement
[fae90d5f]1109 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]1110 | asm_statement
[61fc4f6]1111 | DIRECTIVE
[6d539f83]1112 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]1113 ;
[51b73452]1114
1115labeled_statement:
[033ff37]1116 // labels cannot be identifiers 0 or 1
[44a81853]1117 identifier_or_type_name ':' attribute_list_opt statement
[6d01d89]1118 { $$ = $4->add_label( $1, $3 ); }
[afe9e45]1119 | identifier_or_type_name ':' attribute_list_opt error // syntax error
1120 {
1121 SemanticError( yylloc, ::toString( "Label \"", *$1.str, "\" must be associated with a statement, "
1122 "where a declaration, case, or default is not a statement. "
1123 "Move the label or terminate with a semi-colon." ) );
1124 $$ = nullptr;
1125 }
[4d51835]1126 ;
[51b73452]1127
1128compound_statement:
[4d51835]1129 '{' '}'
[e82aa9df]1130 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]1131 | '{' push
[5e25953]1132 local_label_declaration_opt // GCC, local labels appear at start of block
[9bd6105]1133 statement_decl_list // C99, intermix declarations and statements
[c0aa336]1134 pop '}'
[35718a9]1135 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]1136 ;
[b87a5ed]1137
[9bd6105]1138statement_decl_list: // C99
1139 statement_decl
[35718a9]1140 | statement_decl_list statement_decl
[6d01d89]1141 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1142 ;
[51b73452]1143
[9bd6105]1144statement_decl:
[4d51835]1145 declaration // CFA, new & old style declarations
[e82aa9df]1146 { $$ = new StatementNode( $1 ); }
[4d51835]1147 | EXTENSION declaration // GCC
[6d01d89]1148 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[4d51835]1149 | function_definition
[e82aa9df]1150 { $$ = new StatementNode( $1 ); }
[c0aa336]1151 | EXTENSION function_definition // GCC
[6d01d89]1152 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[35718a9]1153 | statement
[4d51835]1154 ;
[51b73452]1155
[9bd6105]1156statement_list_nodecl:
[4d51835]1157 statement
[9bd6105]1158 | statement_list_nodecl statement
[6d01d89]1159 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[afe9e45]1160 | statement_list_nodecl error // syntax error
1161 { SemanticError( yylloc, "Declarations only allowed at the start of the switch body, i.e., after the '{'." ); $$ = nullptr; }
[4d51835]1162 ;
[51b73452]1163
1164expression_statement:
[4d51835]1165 comma_expression_opt ';'
[e82aa9df]1166 { $$ = new StatementNode( build_expr( $1 ) ); }
[05c941a]1167 | MUTEX '(' ')' comma_expression ';'
1168 { $$ = new StatementNode( build_mutex( nullptr, new StatementNode( build_expr( $4 ) ) ) ); }
[4d51835]1169 ;
[51b73452]1170
1171selection_statement:
[3d26610]1172 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1173 // the inherent S/R conflict with THEN/ELSE.
1174 push if_statement pop
1175 { $$ = $2; }
[4cc585b]1176 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1177 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1178 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1179 {
[6a276a0]1180 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1181 // The semantics of the declaration list is changed to include associated initialization, which is performed
1182 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1183 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1184 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1185 // statement.
[a7741435]1186 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1187 }
[afe9e45]1188 | SWITCH '(' comma_expression ')' '{' error '}' // CFA, syntax error
1189 { SemanticError( yylloc, "Only declarations can appear before the list of case clauses." ); $$ = nullptr; }
[4d51835]1190 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1191 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1192 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1193 {
[6a276a0]1194 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1195 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1196 }
[afe9e45]1197 | CHOOSE '(' comma_expression ')' '{' error '}' // CFA, syntax error
1198 { SemanticError( yylloc, "Only declarations can appear before the list of case clauses." ); $$ = nullptr; }
[4d51835]1199 ;
[b87a5ed]1200
[3d26610]1201if_statement:
[473d1da0]1202 IF '(' conditional_declaration ')' statement %prec THEN
[3d26610]1203 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1204 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[473d1da0]1205 | IF '(' conditional_declaration ')' statement ELSE statement
[a025ea8]1206 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1207 ;
1208
[473d1da0]1209conditional_declaration:
[35718a9]1210 comma_expression
[473d1da0]1211 { $$ = new CondCtl( nullptr, $1 ); }
[35718a9]1212 | c_declaration // no semi-colon
[473d1da0]1213 { $$ = new CondCtl( $1, nullptr ); }
[35718a9]1214 | cfa_declaration // no semi-colon
[473d1da0]1215 { $$ = new CondCtl( $1, nullptr ); }
[6d49ea3]1216 | declaration comma_expression // semi-colon separated
[473d1da0]1217 { $$ = new CondCtl( $1, $2 ); }
[936e9f4]1218 ;
1219
[de62360d]1220// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1221// clause allows a list of values and subranges.
[b87a5ed]1222
1223case_value: // CFA
[4d51835]1224 constant_expression { $$ = $1; }
1225 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[408ab79]1226 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1227 | subrange // CFA, subrange
1228 ;
[b87a5ed]1229
1230case_value_list: // CFA
[e82aa9df]1231 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1232 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1233 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1234 ;
[b87a5ed]1235
1236case_label: // CFA
[afe9e45]1237 CASE error // syntax error
1238 { SemanticError( yylloc, "Missing case list after case." ); $$ = nullptr; }
[5c216b4]1239 | CASE case_value_list ':' { $$ = $2; }
[afe9e45]1240 | CASE case_value_list error // syntax error
1241 { SemanticError( yylloc, "Missing colon after case list." ); $$ = nullptr; }
[e82aa9df]1242 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1243 // A semantic check is required to ensure only one default clause per switch/choose statement.
[afe9e45]1244 | DEFAULT error // syntax error
1245 { SemanticError( yylloc, "Missing colon after default." ); $$ = nullptr; }
[4d51835]1246 ;
[b87a5ed]1247
1248case_label_list: // CFA
[4d51835]1249 case_label
[1d4580a]1250 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1251 ;
[b87a5ed]1252
1253case_clause: // CFA
[a025ea8]1254 case_label_list statement { $$ = $1->append_last_case( maybe_build_compound( $2 ) ); }
[4d51835]1255 ;
[b87a5ed]1256
1257switch_clause_list_opt: // CFA
[4d51835]1258 // empty
[58dd019]1259 { $$ = nullptr; }
[4d51835]1260 | switch_clause_list
1261 ;
[b87a5ed]1262
1263switch_clause_list: // CFA
[9bd6105]1264 case_label_list statement_list_nodecl
[e82aa9df]1265 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1266 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1267 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1268 ;
[b87a5ed]1269
[51b73452]1270iteration_statement:
[5695645]1271 WHILE '(' ')' statement %prec THEN // CFA => while ( 1 )
[d78c238]1272 { $$ = new StatementNode( build_while( new CondCtl( nullptr, NEW_ONE ), maybe_build_compound( $4 ) ) ); }
[5695645]1273 | WHILE '(' ')' statement ELSE statement // CFA
[86b8d16]1274 {
[d78c238]1275 $$ = new StatementNode( build_while( new CondCtl( nullptr, NEW_ONE ), maybe_build_compound( $4 ) ) );
[ae2f2ae]1276 SemanticWarning( yylloc, Warning::SuperfluousElse, "" );
[86b8d16]1277 }
[473d1da0]1278 | WHILE '(' conditional_declaration ')' statement %prec THEN
[efc8f3e]1279 { $$ = new StatementNode( build_while( $3, maybe_build_compound( $5 ) ) ); }
[473d1da0]1280 | WHILE '(' conditional_declaration ')' statement ELSE statement // CFA
[3b0bc16]1281 { $$ = new StatementNode( build_while( $3, maybe_build_compound( $5 ), $7 ) ); }
[f271bdd]1282 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[d78c238]1283 { $$ = new StatementNode( build_do_while( NEW_ONE, maybe_build_compound( $2 ) ) ); }
[5695645]1284 | DO statement WHILE '(' ')' ELSE statement // CFA
[86b8d16]1285 {
[d78c238]1286 $$ = new StatementNode( build_do_while( NEW_ONE, maybe_build_compound( $2 ) ) );
[ae2f2ae]1287 SemanticWarning( yylloc, Warning::SuperfluousElse, "" );
[86b8d16]1288 }
1289 | DO statement WHILE '(' comma_expression ')' ';'
[efc8f3e]1290 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
1291 | DO statement WHILE '(' comma_expression ')' ELSE statement // CFA
[3b0bc16]1292 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ), $8 ) ); }
[86b8d16]1293 | FOR '(' ')' statement %prec THEN // CFA => for ( ;; )
[a025ea8]1294 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[86b8d16]1295 | FOR '(' ')' statement ELSE statement // CFA
1296 {
1297 $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) );
[ae2f2ae]1298 SemanticWarning( yylloc, Warning::SuperfluousElse, "" );
[86b8d16]1299 }
[efc8f3e]1300 | FOR '(' for_control_expression_list ')' statement %prec THEN
1301 { $$ = new StatementNode( build_for( $3, maybe_build_compound( $5 ) ) ); }
1302 | FOR '(' for_control_expression_list ')' statement ELSE statement // CFA
[3b0bc16]1303 { $$ = new StatementNode( build_for( $3, maybe_build_compound( $5 ), $7 ) ); }
[a73c16e]1304 ;
1305
[6d01d89]1306for_control_expression_list:
1307 for_control_expression
1308 | for_control_expression_list ':' for_control_expression
[67d4e37]1309 // ForCtrl + ForCtrl:
1310 // init + init => multiple declaration statements that are hoisted
1311 // condition + condition => (expression) && (expression)
1312 // change + change => (expression), (expression)
1313 {
1314 $1->init->set_last( $3->init );
1315 if ( $1->condition ) {
1316 if ( $3->condition ) {
1317 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1318 } // if
1319 } else $1->condition = $3->condition;
1320 if ( $1->change ) {
1321 if ( $3->change ) {
1322 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1323 } // if
1324 } else $1->change = $3->change;
1325 $$ = $1;
1326 }
[6d01d89]1327 ;
1328
[51b73452]1329for_control_expression:
[6d01d89]1330 ';' comma_expression_opt ';' comma_expression_opt
1331 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1332 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1333 { $$ = new ForCtrl( $1, $3, $5 ); }
1334 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1335 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1336
[aa122e9]1337 | '@' ';' comma_expression // CFA, empty loop-index
[51fbba5]1338 { $$ = new ForCtrl( (ExpressionNode *)nullptr, $3, nullptr ); }
[aa122e9]1339 | '@' ';' comma_expression ';' comma_expression // CFA, empty loop-index
[51fbba5]1340 { $$ = new ForCtrl( (ExpressionNode *)nullptr, $3, $5 ); }
1341
[aa122e9]1342 | comma_expression // CFA, anonymous loop-index
[d78c238]1343 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), NEW_ZERO, OperKinds::LThan, $1->clone(), NEW_ONE ); }
[aa122e9]1344 | downupdowneq comma_expression // CFA, anonymous loop-index
[52be5948]1345 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), UPDOWN( $1, NEW_ZERO, $2->clone() ), $1, UPDOWN( $1, $2->clone(), NEW_ZERO ), NEW_ONE ); }
1346
[aa122e9]1347 | comma_expression updowneq comma_expression // CFA, anonymous loop-index
[52be5948]1348 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), UPDOWN( $2, $1->clone(), $3 ), $2, UPDOWN( $2, $3->clone(), $1->clone() ), NEW_ONE ); }
[aa122e9]1349 | '@' updowneq comma_expression // CFA, anonymous loop-index
[dbedd71]1350 {
[4fee301]1351 if ( $2 == OperKinds::LThan || $2 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1352 else $$ = forCtrl( $3, new string( DeclarationNode::anonymous.newName() ), $3->clone(), $2, nullptr, NEW_ONE );
1353 }
[aa122e9]1354 | comma_expression updowneq '@' // CFA, anonymous loop-index
[dbedd71]1355 {
[4fee301]1356 if ( $2 == OperKinds::LThan || $2 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_ANON_FIELD ); $$ = nullptr; }
[ed9a1ae]1357 else { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
[dbedd71]1358 }
[aa122e9]1359 | comma_expression updowneq comma_expression '~' comma_expression // CFA, anonymous loop-index
[52be5948]1360 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), UPDOWN( $2, $1->clone(), $3 ), $2, UPDOWN( $2, $3->clone(), $1->clone() ), $5 ); }
[aa122e9]1361 | '@' updowneq comma_expression '~' comma_expression // CFA, anonymous loop-index
[dbedd71]1362 {
[4fee301]1363 if ( $2 == OperKinds::LThan || $2 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1364 else $$ = forCtrl( $3, new string( DeclarationNode::anonymous.newName() ), $3->clone(), $2, nullptr, $5 );
1365 }
[aa122e9]1366 | comma_expression updowneq '@' '~' comma_expression // CFA, anonymous loop-index
[dbedd71]1367 {
[4fee301]1368 if ( $2 == OperKinds::LThan || $2 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_ANON_FIELD ); $$ = nullptr; }
[ed9a1ae]1369 else { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
[dbedd71]1370 }
[52be5948]1371 | comma_expression updowneq comma_expression '~' '@' // CFA, error
[4fee301]1372 { SemanticError( yylloc, MISSING_ANON_FIELD ); $$ = nullptr; }
1373 | '@' updowneq '@' // CFA, error
1374 { SemanticError( yylloc, MISSING_ANON_FIELD ); $$ = nullptr; }
[52be5948]1375 | '@' updowneq comma_expression '~' '@' // CFA, error
[4fee301]1376 { SemanticError( yylloc, MISSING_ANON_FIELD ); $$ = nullptr; }
[52be5948]1377 | comma_expression updowneq '@' '~' '@' // CFA, error
[4fee301]1378 { SemanticError( yylloc, MISSING_ANON_FIELD ); $$ = nullptr; }
[dbedd71]1379 | '@' updowneq '@' '~' '@' // CFA, error
[4fee301]1380 { SemanticError( yylloc, MISSING_ANON_FIELD ); $$ = nullptr; }
[52be5948]1381
[f1aeede]1382 | comma_expression ';' comma_expression // CFA
[d78c238]1383 { $$ = forCtrl( $3, $1, NEW_ZERO, OperKinds::LThan, $3->clone(), NEW_ONE ); }
1384 | comma_expression ';' downupdowneq comma_expression // CFA
[52be5948]1385 { $$ = forCtrl( $4, $1, UPDOWN( $3, NEW_ZERO, $4->clone() ), $3, UPDOWN( $3, $4->clone(), NEW_ZERO ), NEW_ONE ); }
1386
[d78c238]1387 | comma_expression ';' comma_expression updowneq comma_expression // CFA
[52be5948]1388 { $$ = forCtrl( $3, $1, UPDOWN( $4, $3->clone(), $5 ), $4, UPDOWN( $4, $5->clone(), $3->clone() ), NEW_ONE ); }
[dbedd71]1389 | comma_expression ';' '@' updowneq comma_expression // CFA
1390 {
[4fee301]1391 if ( $4 == OperKinds::LThan || $4 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1392 else $$ = forCtrl( $5, $1, $5->clone(), $4, nullptr, NEW_ONE );
1393 }
[52be5948]1394 | comma_expression ';' comma_expression updowneq '@' // CFA
1395 {
[4fee301]1396 if ( $4 == OperKinds::GThan || $4 == OperKinds::GEThan ) { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
1397 else if ( $4 == OperKinds::LEThan ) { SemanticError( yylloc, "Equality with missing high value is meaningless. Use \"~\"." ); $$ = nullptr; }
[52be5948]1398 else $$ = forCtrl( $3, $1, $3->clone(), $4, nullptr, NEW_ONE );
1399 }
[dbedd71]1400 | comma_expression ';' '@' updowneq '@' // CFA, error
[4fee301]1401 { SemanticError( yylloc, "Missing low/high value for up/down-to range so index is uninitialized." ); $$ = nullptr; }
[d78c238]1402
1403 | comma_expression ';' comma_expression updowneq comma_expression '~' comma_expression // CFA
[52be5948]1404 { $$ = forCtrl( $3, $1, UPDOWN( $4, $3->clone(), $5 ), $4, UPDOWN( $4, $5->clone(), $3->clone() ), $7 ); }
1405 | comma_expression ';' '@' updowneq comma_expression '~' comma_expression // CFA, error
[dbedd71]1406 {
[4fee301]1407 if ( $4 == OperKinds::LThan || $4 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1408 else $$ = forCtrl( $5, $1, $5->clone(), $4, nullptr, $7 );
1409 }
[52be5948]1410 | comma_expression ';' comma_expression updowneq '@' '~' comma_expression // CFA
1411 {
[4fee301]1412 if ( $4 == OperKinds::GThan || $4 == OperKinds::GEThan ) { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
1413 else if ( $4 == OperKinds::LEThan ) { SemanticError( yylloc, "Equality with missing high value is meaningless. Use \"~\"." ); $$ = nullptr; }
[52be5948]1414 else $$ = forCtrl( $3, $1, $3->clone(), $4, nullptr, $7 );
1415 }
1416 | comma_expression ';' comma_expression updowneq comma_expression '~' '@' // CFA
1417 { $$ = forCtrl( $3, $1, UPDOWN( $4, $3->clone(), $5 ), $4, UPDOWN( $4, $5->clone(), $3->clone() ), nullptr ); }
1418 | comma_expression ';' '@' updowneq comma_expression '~' '@' // CFA, error
[dbedd71]1419 {
[4fee301]1420 if ( $4 == OperKinds::LThan || $4 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1421 else $$ = forCtrl( $5, $1, $5->clone(), $4, nullptr, nullptr );
1422 }
[52be5948]1423 | comma_expression ';' comma_expression updowneq '@' '~' '@' // CFA
[d78c238]1424 {
[4fee301]1425 if ( $4 == OperKinds::GThan || $4 == OperKinds::GEThan ) { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
1426 else if ( $4 == OperKinds::LEThan ) { SemanticError( yylloc, "Equality with missing high value is meaningless. Use \"~\"." ); $$ = nullptr; }
[d78c238]1427 else $$ = forCtrl( $3, $1, $3->clone(), $4, nullptr, nullptr );
1428 }
[dbedd71]1429 | comma_expression ';' '@' updowneq '@' '~' '@' // CFA
[4fee301]1430 { SemanticError( yylloc, "Missing low/high value for up/down-to range so index is uninitialized." ); $$ = nullptr; }
[d78c238]1431
1432 | declaration comma_expression // CFA
1433 { $$ = forCtrl( $1, NEW_ZERO, OperKinds::LThan, $2, NEW_ONE ); }
1434 | declaration downupdowneq comma_expression // CFA
[52be5948]1435 { $$ = forCtrl( $1, UPDOWN( $2, NEW_ZERO, $3 ), $2, UPDOWN( $2, $3->clone(), NEW_ZERO ), NEW_ONE ); }
1436
[d78c238]1437 | declaration comma_expression updowneq comma_expression // CFA
[52be5948]1438 { $$ = forCtrl( $1, UPDOWN( $3, $2->clone(), $4 ), $3, UPDOWN( $3, $4->clone(), $2->clone() ), NEW_ONE ); }
[dbedd71]1439 | declaration '@' updowneq comma_expression // CFA
1440 {
[4fee301]1441 if ( $3 == OperKinds::LThan || $3 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1442 else $$ = forCtrl( $1, $4, $3, nullptr, NEW_ONE );
1443 }
[52be5948]1444 | declaration comma_expression updowneq '@' // CFA
1445 {
[4fee301]1446 if ( $3 == OperKinds::GThan || $3 == OperKinds::GEThan ) { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
1447 else if ( $3 == OperKinds::LEThan ) { SemanticError( yylloc, "Equality with missing high value is meaningless. Use \"~\"." ); $$ = nullptr; }
[52be5948]1448 else $$ = forCtrl( $1, $2, $3, nullptr, NEW_ONE );
1449 }
[d78c238]1450
1451 | declaration comma_expression updowneq comma_expression '~' comma_expression // CFA
[52be5948]1452 { $$ = forCtrl( $1, UPDOWN( $3, $2, $4 ), $3, UPDOWN( $3, $4->clone(), $2->clone() ), $6 ); }
[dbedd71]1453 | declaration '@' updowneq comma_expression '~' comma_expression // CFA
1454 {
[4fee301]1455 if ( $3 == OperKinds::LThan || $3 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1456 else $$ = forCtrl( $1, $4, $3, nullptr, $6 );
1457 }
[52be5948]1458 | declaration comma_expression updowneq '@' '~' comma_expression // CFA
1459 {
[4fee301]1460 if ( $3 == OperKinds::GThan || $3 == OperKinds::GEThan ) { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
1461 else if ( $3 == OperKinds::LEThan ) { SemanticError( yylloc, "Equality with missing high value is meaningless. Use \"~\"." ); $$ = nullptr; }
[52be5948]1462 else $$ = forCtrl( $1, $2, $3, nullptr, $6 );
1463 }
1464 | declaration comma_expression updowneq comma_expression '~' '@' // CFA
1465 { $$ = forCtrl( $1, UPDOWN( $3, $2, $4 ), $3, UPDOWN( $3, $4->clone(), $2->clone() ), nullptr ); }
[dbedd71]1466 | declaration '@' updowneq comma_expression '~' '@' // CFA
1467 {
[4fee301]1468 if ( $3 == OperKinds::LThan || $3 == OperKinds::LEThan ) { SemanticError( yylloc, MISSING_LOW ); $$ = nullptr; }
[dbedd71]1469 else $$ = forCtrl( $1, $4, $3, nullptr, nullptr );
1470 }
[52be5948]1471 | declaration comma_expression updowneq '@' '~' '@' // CFA
[d78c238]1472 {
[4fee301]1473 if ( $3 == OperKinds::GThan || $3 == OperKinds::GEThan ) { SemanticError( yylloc, MISSING_HIGH ); $$ = nullptr; }
1474 else if ( $3 == OperKinds::LEThan ) { SemanticError( yylloc, "Equality with missing high value is meaningless. Use \"~\"." ); $$ = nullptr; }
[d78c238]1475 else $$ = forCtrl( $1, $2, $3, nullptr, nullptr );
1476 }
[dbedd71]1477 | declaration '@' updowneq '@' '~' '@' // CFA, error
[4fee301]1478 { SemanticError( yylloc, "Missing low/high value for up/down-to range so index is uninitialized." ); $$ = nullptr; }
[67d4e37]1479
[ca33b15]1480 | comma_expression ';' TYPEDEFname // CFA, array type
1481 {
[d78c238]1482 SemanticError( yylloc, "Type iterator is currently unimplemented." ); $$ = nullptr;
1483 //$$ = forCtrl( new ExpressionNode( build_varref( $3 ) ), $1, nullptr, OperKinds::Range, nullptr, nullptr );
[ca33b15]1484 }
[d78c238]1485 | comma_expression ';' downupdowneq TYPEDEFname // CFA, array type
1486 {
[52be5948]1487 if ( $3 == OperKinds::LEThan || $3 == OperKinds::GEThan ) { SemanticError( yylloc, "All enumation ranges are equal (all values). Remove \"=~\"." ); $$ = nullptr; }
[d78c238]1488 SemanticError( yylloc, "Type iterator is currently unimplemented." ); $$ = nullptr;
1489 }
1490 ;
[98337569]1491
[d78c238]1492downupdowneq:
1493 ErangeDown
1494 { $$ = OperKinds::GThan; }
1495 | ErangeUpEq
1496 { $$ = OperKinds::LEThan; }
1497 | ErangeDownEq
1498 { $$ = OperKinds::GEThan; }
[d1625f8]1499 ;
[51b73452]1500
[d78c238]1501updown:
[cc22003]1502 '~'
1503 { $$ = OperKinds::LThan; }
[d69f4bb4]1504 | ErangeDown
1505 { $$ = OperKinds::GThan; }
[d78c238]1506 ;
1507
1508updowneq:
1509 updown
1510 | ErangeUpEq
1511 { $$ = OperKinds::LEThan; }
[d69f4bb4]1512 | ErangeDownEq
1513 { $$ = OperKinds::GEThan; }
[cc22003]1514 ;
1515
[51b73452]1516jump_statement:
[44a81853]1517 GOTO identifier_or_type_name ';'
[ab57786]1518 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1519 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1520 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1521 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1522 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1523 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
[ec3f9c8]1524 | fall_through_name ';' // CFA
[6a276a0]1525 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
[ec3f9c8]1526 | fall_through_name identifier_or_type_name ';' // CFA
[6a276a0]1527 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1528 | fall_through_name DEFAULT ';' // CFA
1529 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1530 | CONTINUE ';'
[de62360d]1531 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1532 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1533 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1534 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1535 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1536 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1537 | BREAK ';'
[de62360d]1538 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1539 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1540 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1541 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1542 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1543 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1544 | RETURN comma_expression_opt ';'
[e82aa9df]1545 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1546 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1547 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1548 | SUSPEND ';'
[427854b]1549 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1550 | SUSPEND compound_statement
[427854b]1551 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1552 | SUSPEND COROUTINE ';'
[427854b]1553 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1554 | SUSPEND COROUTINE compound_statement
[427854b]1555 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1556 | SUSPEND GENERATOR ';'
[427854b]1557 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1558 | SUSPEND GENERATOR compound_statement
[427854b]1559 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1560 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1561 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1562 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1563 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1564 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1565 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1566 ;
[51b73452]1567
[6a276a0]1568fall_through_name: // CFA
1569 FALLTHRU
1570 | FALLTHROUGH
1571 ;
1572
[8b47e50]1573with_statement:
[5b2edbc]1574 WITH '(' tuple_expression_list ')' statement
[e16eb460]1575 { $$ = new StatementNode( build_with( $3, $5 ) ); }
[5b2edbc]1576 ;
1577
[b6b3c42]1578// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1579mutex_statement:
[e16eb460]1580 MUTEX '(' argument_expression_list ')' statement
[6cebfef]1581 { $$ = new StatementNode( build_mutex( $3, $5 ) ); }
[b6b3c42]1582 ;
1583
[51d6d6a]1584when_clause:
[6a276a0]1585 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1586 ;
1587
[5b2edbc]1588when_clause_opt:
1589 // empty
[135b431]1590 { $$ = nullptr; }
[51d6d6a]1591 | when_clause
[5b2edbc]1592 ;
1593
1594waitfor:
[713926ca]1595 WAITFOR '(' cast_expression ')'
1596 { $$ = $3; }
[cbbd8fd7]1597// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1598// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1599 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1600 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1601 ;
1602
1603cast_expression_list:
1604 cast_expression
1605 | cast_expression_list ',' cast_expression
[a491a3c]1606 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1607 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1608 ;
1609
1610timeout:
[6a276a0]1611 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1612 ;
1613
1614waitfor_clause:
[51d6d6a]1615 when_clause_opt waitfor statement %prec THEN
[a025ea8]1616 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1617 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1618 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1619 | when_clause_opt timeout statement %prec THEN
[a025ea8]1620 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1621 | when_clause_opt ELSE statement
[a025ea8]1622 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[afe9e45]1623 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
1624 | when_clause_opt timeout statement WOR ELSE statement // syntax error
[713926ca]1625 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1626 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1627 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1628 ;
1629
1630waitfor_statement:
[51d6d6a]1631 when_clause_opt waitfor statement %prec THEN
[135b431]1632 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1633 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1634 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1635 ;
1636
[51b73452]1637exception_statement:
[9fb1367]1638 TRY compound_statement handler_clause %prec THEN
[e82aa9df]1639 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1640 | TRY compound_statement finally_clause
[e82aa9df]1641 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1642 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1643 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1644 ;
[51b73452]1645
1646handler_clause:
[098f7ff]1647 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1648 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1649 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1650 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1651 ;
1652
1653handler_predicate_opt:
[7fdb94e1]1654 // empty
[cbce272]1655 { $$ = nullptr; }
[6a276a0]1656 | ';' conditional_expression { $$ = $2; }
[307a732]1657 ;
1658
1659handler_key:
[6a276a0]1660 CATCH { $$ = CatchStmt::Terminate; }
[9fb1367]1661 | RECOVER { $$ = CatchStmt::Terminate; }
[6a276a0]1662 | CATCHRESUME { $$ = CatchStmt::Resume; }
[9fb1367]1663 | FIXUP { $$ = CatchStmt::Resume; }
[4d51835]1664 ;
[51b73452]1665
1666finally_clause:
[6a276a0]1667 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1668 ;
[51b73452]1669
1670exception_declaration:
[d0ffed1]1671 // No SUE declaration in parameter list.
1672 type_specifier_nobody
1673 | type_specifier_nobody declarator
[c0a33d2]1674 { $$ = $2->addType( $1 ); }
[d0ffed1]1675 | type_specifier_nobody variable_abstract_declarator
[4d51835]1676 { $$ = $2->addType( $1 ); }
[033ff37]1677 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1678 { $$ = $1->addName( $2 ); }
[c0aa336]1679 | cfa_abstract_declarator_tuple // CFA
[4d51835]1680 ;
[51b73452]1681
[2a8427c6]1682enable_disable_statement:
1683 enable_disable_key identifier_list compound_statement
1684 ;
1685
1686enable_disable_key:
1687 ENABLE
1688 | DISABLE
1689 ;
1690
[51b73452]1691asm_statement:
[ab57786]1692 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1693 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1694 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1695 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1696 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1697 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1698 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1699 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1700 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1701 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1702 ;
1703
1704asm_volatile_opt: // GCC
1705 // empty
1706 { $$ = false; }
1707 | VOLATILE
1708 { $$ = true; }
[4d51835]1709 ;
[b87a5ed]1710
1711asm_operands_opt: // GCC
[4d51835]1712 // empty
[58dd019]1713 { $$ = nullptr; } // use default argument
[4d51835]1714 | asm_operands_list
1715 ;
[b87a5ed]1716
1717asm_operands_list: // GCC
[4d51835]1718 asm_operand
1719 | asm_operands_list ',' asm_operand
[4a063df]1720 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1721 ;
[b87a5ed]1722
1723asm_operand: // GCC
[ab57786]1724 string_literal '(' constant_expression ')'
[408ab79]1725 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1726 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1727 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1728 ;
1729
[4e06c1e]1730asm_clobbers_list_opt: // GCC
[7f5566b]1731 // empty
[58dd019]1732 { $$ = nullptr; } // use default argument
[ab57786]1733 | string_literal
[d1625f8]1734 { $$ = new ExpressionNode( $1 ); }
[ab57786]1735 | asm_clobbers_list_opt ',' string_literal
[4a063df]1736 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1737 ;
[b87a5ed]1738
[7f5566b]1739label_list:
[033ff37]1740 identifier
[ab57786]1741 {
1742 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1743 delete $1; // allocated by lexer
1744 }
[033ff37]1745 | label_list ',' identifier
[ab57786]1746 {
1747 $$ = $1; $1->labels.push_back( *$3 );
1748 delete $3; // allocated by lexer
1749 }
[4d51835]1750 ;
[51b73452]1751
[c11e31c]1752//******************************* DECLARATIONS *********************************
[51b73452]1753
[b87a5ed]1754declaration_list_opt: // used at beginning of switch statement
[35718a9]1755 // empty
[58dd019]1756 { $$ = nullptr; }
[4d51835]1757 | declaration_list
1758 ;
[51b73452]1759
1760declaration_list:
[4d51835]1761 declaration
[35718a9]1762 | declaration_list declaration
1763 { $$ = $1->appendList( $2 ); }
[4d51835]1764 ;
[51b73452]1765
[407bde5]1766KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1767 // empty
[58dd019]1768 { $$ = nullptr; }
[35718a9]1769 | KR_parameter_list
[4d51835]1770 ;
[51b73452]1771
[35718a9]1772KR_parameter_list:
[4cc585b]1773 push c_declaration pop ';'
1774 { $$ = $2; }
[35718a9]1775 | KR_parameter_list push c_declaration pop ';'
[4d51835]1776 { $$ = $1->appendList( $3 ); }
1777 ;
[b87a5ed]1778
[51b1202]1779local_label_declaration_opt: // GCC, local label
[4d51835]1780 // empty
[51b1202]1781 | local_label_declaration_list
[4d51835]1782 ;
[b87a5ed]1783
[51b1202]1784local_label_declaration_list: // GCC, local label
1785 LABEL local_label_list ';'
1786 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1787 ;
[b87a5ed]1788
[51b1202]1789local_label_list: // GCC, local label
[033ff37]1790 identifier_or_type_name
1791 | local_label_list ',' identifier_or_type_name
[4d51835]1792 ;
[b87a5ed]1793
[936e9f4]1794declaration: // old & new style declarations
[35718a9]1795 c_declaration ';'
[d8454b9]1796 {
1797 // printf( "C_DECLARATION1 %p %s\n", $$, $$->name ? $$->name->c_str() : "(nil)" );
1798 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
1799 // printf( "\tattr %s\n", attr->name.c_str() );
1800 // } // for
1801 }
[35718a9]1802 | cfa_declaration ';' // CFA
[b47b827]1803 | static_assert // C11
[4d51835]1804 ;
[b87a5ed]1805
[b9be000b]1806static_assert:
1807 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1808 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1809 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1810 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1811
[de62360d]1812// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1813// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1814// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1815// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1816// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1817// block, but cannot be mixed within a specific declaration.
[c11e31c]1818//
[b87a5ed]1819// CFA C
1820// [10] int x; int x[10]; // array of 10 integers
1821// [10] * char y; char *y[10]; // array of 10 pointers to char
1822
[c0aa336]1823cfa_declaration: // CFA
[4cc585b]1824 cfa_variable_declaration
1825 | cfa_typedef_declaration
1826 | cfa_function_declaration
1827 | type_declaring_list
[2501ae5]1828 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1829 | trait_specifier
[4d51835]1830 ;
[b87a5ed]1831
[c0aa336]1832cfa_variable_declaration: // CFA
1833 cfa_variable_specifier initializer_opt
[7fdb94e1]1834 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1835 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1836 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1837 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1838 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1839 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1840 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1841 ;
[b87a5ed]1842
[c0aa336]1843cfa_variable_specifier: // CFA
[de62360d]1844 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1845 // storage-class
[c0aa336]1846 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1847 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1848 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1849 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1850 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1851 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1852 ;
[b87a5ed]1853
[c0aa336]1854cfa_function_declaration: // CFA
1855 cfa_function_specifier
1856 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1857 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1858 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1859 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1860 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1861 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1862 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1863 {
[481115f]1864 // Append the return type at the start (left-hand-side) to each identifier in the list.
1865 DeclarationNode * ret = new DeclarationNode;
1866 ret->type = maybeClone( $1->type->base );
[40de461]1867 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1868 }
1869 ;
[b87a5ed]1870
[c0aa336]1871cfa_function_specifier: // CFA
[40de461]1872// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1873// {
1874// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1875// }
[40de461]1876// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1877// {
1878// typedefTable.setNextIdentifier( *$5 );
1879// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1880// }
[40de461]1881// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1882// {
1883// typedefTable.setNextIdentifier( *$5 );
1884// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1885// }
1886// | '[' ']' typegen_name
1887 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1888 //
[40de461]1889 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1890 // '[' ']' type_specifier
1891 //
[2871210]1892 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1893 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1894 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1895 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1896 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1897 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1898 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1899 ;
[b87a5ed]1900
[c0aa336]1901cfa_function_return: // CFA
[c0a33d2]1902 '[' push cfa_parameter_list pop ']'
1903 { $$ = DeclarationNode::newTuple( $3 ); }
1904 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1905 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1906 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1907 ;
[b87a5ed]1908
[c0aa336]1909cfa_typedef_declaration: // CFA
1910 TYPEDEF cfa_variable_specifier
[4d51835]1911 {
[ecae5860]1912 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1913 $$ = $2->addTypedef();
1914 }
[c0aa336]1915 | TYPEDEF cfa_function_specifier
[4d51835]1916 {
[ecae5860]1917 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1918 $$ = $2->addTypedef();
1919 }
[033ff37]1920 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1921 {
[ecae5860]1922 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1923 $$ = $1->appendList( $1->cloneType( $5 ) );
1924 }
1925 ;
[b87a5ed]1926
[de62360d]1927// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1928// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1929
1930typedef_declaration:
[4d51835]1931 TYPEDEF type_specifier declarator
1932 {
[ecae5860]1933 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1934 $$ = $3->addType( $2 )->addTypedef();
1935 }
1936 | typedef_declaration pop ',' push declarator
1937 {
[ecae5860]1938 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1939 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1940 }
[de62360d]1941 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1942 {
[ecae5860]1943 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1944 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1945 }
1946 | type_specifier TYPEDEF declarator
1947 {
[ecae5860]1948 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1949 $$ = $3->addType( $1 )->addTypedef();
1950 }
1951 | type_specifier TYPEDEF type_qualifier_list declarator
1952 {
[ecae5860]1953 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1954 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1955 }
1956 ;
[b87a5ed]1957
[721f17a]1958typedef_expression:
[25744d2]1959 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1960 TYPEDEF identifier '=' assignment_expression
[4d51835]1961 {
[25744d2]1962 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1963 }
[033ff37]1964 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1965 {
[25744d2]1966 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1967 }
1968 ;
[51b73452]1969
[c0aa336]1970c_declaration:
[4cc585b]1971 declaration_specifier declaring_list
[7fdb94e1]1972 { $$ = distAttr( $1, $2 ); }
[4cc585b]1973 | typedef_declaration
[25744d2]1974 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1975 | sue_declaration_specifier
[4d51835]1976 ;
[51b73452]1977
1978declaring_list:
[de62360d]1979 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1980 // storage-class
[c0aa336]1981 declarator asm_name_opt initializer_opt
[7fdb94e1]1982 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1983 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1984 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1985 ;
[b87a5ed]1986
1987declaration_specifier: // type specifier + storage class
[4d51835]1988 basic_declaration_specifier
1989 | sue_declaration_specifier
[84d58c5]1990 | type_declaration_specifier
[4d51835]1991 ;
[b87a5ed]1992
[d0ffed1]1993declaration_specifier_nobody: // type specifier + storage class - {...}
1994 // Preclude SUE declarations in restricted scopes:
1995 //
1996 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1997 //
1998 // because it is impossible to call f due to name equivalence.
1999 basic_declaration_specifier
2000 | sue_declaration_specifier_nobody
[84d58c5]2001 | type_declaration_specifier
[d0ffed1]2002 ;
2003
2004type_specifier: // type specifier
[4d51835]2005 basic_type_specifier
2006 | sue_type_specifier
[d8454b9]2007 {
2008 // printf( "sue_type_specifier2 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2009 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2010 // printf( "\tattr %s\n", attr->name.c_str() );
2011 // } // for
2012 }
[84d58c5]2013 | type_type_specifier
[4d51835]2014 ;
[b87a5ed]2015
[d0ffed1]2016type_specifier_nobody: // type specifier - {...}
2017 // Preclude SUE declarations in restricted scopes:
2018 //
2019 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
2020 //
2021 // because it is impossible to call f due to name equivalence.
2022 basic_type_specifier
2023 | sue_type_specifier_nobody
[84d58c5]2024 | type_type_specifier
[d0ffed1]2025 ;
2026
[b87a5ed]2027type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]2028 // empty
[58dd019]2029 { $$ = nullptr; }
[4d51835]2030 | type_qualifier_list
2031 ;
[51b73452]2032
2033type_qualifier_list:
[de62360d]2034 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]2035 //
[de62360d]2036 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
2037 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
2038 // appeared only once.
[4d51835]2039 type_qualifier
2040 | type_qualifier_list type_qualifier
2041 { $$ = $1->addQualifiers( $2 ); }
2042 ;
[51b73452]2043
2044type_qualifier:
[4d51835]2045 type_qualifier_name
[5e25953]2046 | attribute // trick handles most atrribute locations
[4d51835]2047 ;
[51b73452]2048
2049type_qualifier_name:
[4d51835]2050 CONST
[738e304]2051 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]2052 | RESTRICT
[738e304]2053 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]2054 | VOLATILE
[738e304]2055 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]2056 | ATOMIC
[738e304]2057 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]2058 | forall
2059 ;
2060
2061forall:
[35718a9]2062 FORALL '(' type_parameter_list ')' // CFA
2063 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]2064 ;
[51b73452]2065
2066declaration_qualifier_list:
[4d51835]2067 storage_class_list
[de62360d]2068 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]2069 { $$ = $1->addQualifiers( $2 ); }
2070 | declaration_qualifier_list type_qualifier_list storage_class_list
2071 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2072 ;
[51b73452]2073
2074storage_class_list:
[de62360d]2075 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
2076 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]2077 //
[de62360d]2078 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
2079 // specifiers in a declaration.
[4d51835]2080 storage_class
2081 | storage_class_list storage_class
2082 { $$ = $1->addQualifiers( $2 ); }
2083 ;
[51b73452]2084
2085storage_class:
[4d51835]2086 EXTERN
[68fe077a]2087 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]2088 | STATIC
[68fe077a]2089 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]2090 | AUTO
[68fe077a]2091 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]2092 | REGISTER
[68fe077a]2093 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[ed9a1ae]2094 | THREADLOCALGCC // GCC
2095 { $$ = DeclarationNode::newStorageClass( Type::ThreadlocalGcc ); }
2096 | THREADLOCALC11 // C11
2097 { $$ = DeclarationNode::newStorageClass( Type::ThreadlocalC11 ); }
[dd020c0]2098 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]2099 | INLINE // C99
[ddfd945]2100 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]2101 | FORTRAN // C99
[ddfd945]2102 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]2103 | NORETURN // C11
[ddfd945]2104 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]2105 ;
[51b73452]2106
2107basic_type_name:
[201aeb9]2108 VOID
[4d51835]2109 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2110 | BOOL // C99
2111 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]2112 | CHAR
2113 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
2114 | INT
2115 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
2116 | INT128
2117 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]2118 | UINT128
2119 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]2120 | FLOAT
2121 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
2122 | DOUBLE
2123 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]2124 | uuFLOAT80
2125 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
2126 | uuFLOAT128
2127 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
2128 | uFLOAT16
2129 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
2130 | uFLOAT32
2131 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
2132 | uFLOAT32X
2133 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
2134 | uFLOAT64
2135 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
2136 | uFLOAT64X
2137 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
2138 | uFLOAT128
2139 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[15f769c]2140 | DECIMAL32
2141 { SemanticError( yylloc, "_Decimal32 is currently unimplemented." ); $$ = nullptr; }
2142 | DECIMAL64
2143 { SemanticError( yylloc, "_Decimal64 is currently unimplemented." ); $$ = nullptr; }
2144 | DECIMAL128
2145 { SemanticError( yylloc, "_Decimal128 is currently unimplemented." ); $$ = nullptr; }
[4d51835]2146 | COMPLEX // C99
[5b639ee]2147 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]2148 | IMAGINARY // C99
[5b639ee]2149 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]2150 | SIGNED
2151 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
2152 | UNSIGNED
2153 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
2154 | SHORT
2155 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
2156 | LONG
2157 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]2158 | VALIST // GCC, __builtin_va_list
2159 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]2160 | AUTO_TYPE
2161 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[1f652a7]2162 | vtable
2163 ;
2164
2165vtable_opt:
2166 // empty
2167 { $$ = nullptr; }
[9380add]2168 | vtable
[1f652a7]2169 ;
2170
2171vtable:
[8f6f3729]2172 VTABLE '(' type_name ')' default_opt
[93bbbc4]2173 { $$ = DeclarationNode::newVtableType( $3 ); }
2174 // { SemanticError( yylloc, "vtable is currently unimplemented." ); $$ = nullptr; }
[1f652a7]2175 ;
2176
2177default_opt:
2178 // empty
2179 { $$ = nullptr; }
2180 | DEFAULT
2181 { SemanticError( yylloc, "vtable default is currently unimplemented." ); $$ = nullptr; }
[4d51835]2182 ;
[51b73452]2183
2184basic_declaration_specifier:
[4d51835]2185 // A semantic check is necessary for conflicting storage classes.
2186 basic_type_specifier
2187 | declaration_qualifier_list basic_type_specifier
2188 { $$ = $2->addQualifiers( $1 ); }
2189 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
2190 { $$ = $1->addQualifiers( $2 ); }
2191 | basic_declaration_specifier storage_class type_qualifier_list
2192 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2193 | basic_declaration_specifier storage_class basic_type_specifier
2194 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
2195 ;
[51b73452]2196
2197basic_type_specifier:
[84d58c5]2198 direct_type
[f38e7d7]2199 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]2200 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]2201 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
2202 ;
[51b73452]2203
[84d58c5]2204direct_type:
[4d51835]2205 basic_type_name
2206 | type_qualifier_list basic_type_name
2207 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]2208 | direct_type type_qualifier
[4d51835]2209 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]2210 | direct_type basic_type_name
[4d51835]2211 { $$ = $1->addType( $2 ); }
2212 ;
[51b73452]2213
[84d58c5]2214indirect_type:
[b6ad601]2215 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]2216 { $$ = $3; }
[b6ad601]2217 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]2218 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]2219 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
2220 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
2221 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
2222 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]2223 | ZERO_T // CFA
2224 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
2225 | ONE_T // CFA
2226 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]2227 ;
[51b73452]2228
[d0ffed1]2229sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]2230 sue_type_specifier
[d8454b9]2231 {
2232 // printf( "sue_declaration_specifier %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2233 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2234 // printf( "\tattr %s\n", attr->name.c_str() );
2235 // } // for
2236 }
[4d51835]2237 | declaration_qualifier_list sue_type_specifier
2238 { $$ = $2->addQualifiers( $1 ); }
2239 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
2240 { $$ = $1->addQualifiers( $2 ); }
2241 | sue_declaration_specifier storage_class type_qualifier_list
2242 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2243 ;
[51b73452]2244
[d0ffed1]2245sue_type_specifier: // struct, union, enum + type specifier
2246 elaborated_type
[d8454b9]2247 {
2248 // printf( "sue_type_specifier %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2249 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2250 // printf( "\tattr %s\n", attr->name.c_str() );
2251 // } // for
2252 }
[fdca7c6]2253 | type_qualifier_list
2254 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
2255 elaborated_type
2256 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2257 | sue_type_specifier type_qualifier
[284da8c]2258 {
2259 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
2260 $$ = $1->addQualifiers( $2 );
2261 }
[4d51835]2262 ;
[51b73452]2263
[d0ffed1]2264sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
2265 sue_type_specifier_nobody
2266 | declaration_qualifier_list sue_type_specifier_nobody
2267 { $$ = $2->addQualifiers( $1 ); }
2268 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
2269 { $$ = $1->addQualifiers( $2 ); }
2270 | sue_declaration_specifier_nobody storage_class type_qualifier_list
2271 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2272 ;
2273
2274sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
2275 elaborated_type_nobody
2276 | type_qualifier_list elaborated_type_nobody
2277 { $$ = $2->addQualifiers( $1 ); }
2278 | sue_type_specifier_nobody type_qualifier
2279 { $$ = $1->addQualifiers( $2 ); }
2280 ;
2281
[84d58c5]2282type_declaration_specifier:
2283 type_type_specifier
2284 | declaration_qualifier_list type_type_specifier
[4d51835]2285 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]2286 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]2287 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]2288 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]2289 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
2290 ;
[b87a5ed]2291
[84d58c5]2292type_type_specifier: // typedef types
2293 type_name
2294 | type_qualifier_list type_name
2295 { $$ = $2->addQualifiers( $1 ); }
2296 | type_type_specifier type_qualifier
2297 { $$ = $1->addQualifiers( $2 ); }
2298 ;
2299
2300type_name:
[4d51835]2301 TYPEDEFname
2302 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]2303 | '.' TYPEDEFname
[47498bd]2304 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]2305 | type_name '.' TYPEDEFname
[c5d7701]2306 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]2307 | typegen_name
2308 | '.' typegen_name
[47498bd]2309 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]2310 | type_name '.' typegen_name
[c5d7701]2311 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]2312 ;
2313
2314typegen_name: // CFA
[65d6de4]2315 TYPEGENname
2316 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2317 | TYPEGENname '(' ')'
[67cf18c]2318 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2319 | TYPEGENname '(' type_list ')'
[84d58c5]2320 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2321 ;
[51b73452]2322
[d0ffed1]2323elaborated_type: // struct, union, enum
[c0aa336]2324 aggregate_type
[d8454b9]2325 {
2326 // printf( "elaborated_type %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2327 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2328 // printf( "\tattr %s\n", attr->name.c_str() );
2329 // } // for
2330 }
[c0aa336]2331 | enum_type
[4d51835]2332 ;
[51b73452]2333
[d0ffed1]2334elaborated_type_nobody: // struct, union, enum - {...}
2335 aggregate_type_nobody
2336 | enum_type_nobody
2337 ;
2338
2339aggregate_type: // struct, union
[fc20514]2340 aggregate_key attribute_list_opt
2341 { forall = false; } // reset
2342 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2343 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[73f04fd]2344 | aggregate_key attribute_list_opt identifier
[fdca7c6]2345 {
[26ef3b2]2346 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2347 forall = false; // reset
2348 }
[284da8c]2349 '{' field_declaration_list_opt '}' type_parameters_opt
[d8454b9]2350 {
2351 // printf( "aggregate_type1 %s\n", $3.str->c_str() );
2352 // if ( $2 )
2353 // for ( Attribute * attr: reverseIterate( $2->attributes ) ) {
2354 // printf( "copySpecifiers12 %s\n", attr->name.c_str() );
2355 // } // for
2356 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2357 // printf( "aggregate_type2 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2358 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2359 // printf( "aggregate_type3 %s\n", attr->name.c_str() );
2360 // } // for
2361 }
[f9c3100]2362 | aggregate_key attribute_list_opt TYPEDEFname // unqualified type name
[407bde5]2363 {
[f9c3100]2364 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2365 forall = false; // reset
2366 }
[284da8c]2367 '{' field_declaration_list_opt '}' type_parameters_opt
[f9c3100]2368 {
[d8454b9]2369 // printf( "AGG3\n" );
[f9c3100]2370 DeclarationNode::newFromTypedef( $3 );
2371 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2372 }
2373 | aggregate_key attribute_list_opt TYPEGENname // unqualified type name
2374 {
2375 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
2376 forall = false; // reset
2377 }
2378 '{' field_declaration_list_opt '}' type_parameters_opt
2379 {
[d8454b9]2380 // printf( "AGG4\n" );
[f9c3100]2381 DeclarationNode::newFromTypeGen( $3, nullptr );
2382 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2383 }
[d0ffed1]2384 | aggregate_type_nobody
2385 ;
2386
[284da8c]2387type_parameters_opt:
2388 // empty
2389 { $$ = nullptr; } %prec '}'
2390 | '(' type_list ')'
2391 { $$ = $2; }
2392 ;
2393
[d0ffed1]2394aggregate_type_nobody: // struct, union - {...}
[73f04fd]2395 aggregate_key attribute_list_opt identifier
[84d58c5]2396 {
[26ef3b2]2397 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2398 forall = false; // reset
[84d58c5]2399 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2400 }
[73f04fd]2401 | aggregate_key attribute_list_opt type_name
[65d6de4]2402 {
[fc20514]2403 forall = false; // reset
[65d6de4]2404 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2405 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2406 // delete newFromTypeGen.
2407 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2408 $3->type->symbolic.name = nullptr;
2409 $3->type->symbolic.actuals = nullptr;
2410 delete $3;
2411 }
[4d51835]2412 ;
[51b73452]2413
2414aggregate_key:
[e307e12]2415 aggregate_data
2416 | aggregate_control
2417 ;
2418
2419aggregate_data:
[1f652a7]2420 STRUCT vtable_opt
[24711a3]2421 { $$ = AggregateDecl::Struct; }
[c0aa336]2422 | UNION
[24711a3]2423 { $$ = AggregateDecl::Union; }
[e307e12]2424 | EXCEPTION // CFA
[24711a3]2425 { $$ = AggregateDecl::Exception; }
[1f652a7]2426 // { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2427 ;
2428
2429aggregate_control: // CFA
[cbbd8fd7]2430 MONITOR
[24711a3]2431 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2432 | MUTEX STRUCT
[24711a3]2433 { $$ = AggregateDecl::Monitor; }
[cbbd8fd7]2434 | GENERATOR
[24711a3]2435 { $$ = AggregateDecl::Generator; }
[cbbd8fd7]2436 | MUTEX GENERATOR
[aeb5d0d]2437 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2438 | COROUTINE
[24711a3]2439 { $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2440 | MUTEX COROUTINE
[aeb5d0d]2441 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2442 | THREAD
[24711a3]2443 { $$ = AggregateDecl::Thread; }
[cbbd8fd7]2444 | MUTEX THREAD
[aeb5d0d]2445 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2446 ;
[51b73452]2447
[7fdb94e1]2448field_declaration_list_opt:
[5d125e4]2449 // empty
[58dd019]2450 { $$ = nullptr; }
[7fdb94e1]2451 | field_declaration_list_opt field_declaration
[a7741435]2452 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2453 ;
[51b73452]2454
2455field_declaration:
[679e644]2456 type_specifier field_declaring_list_opt ';'
[d8454b9]2457 {
2458 // printf( "type_specifier1 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2459 $$ = fieldDecl( $1, $2 );
2460 // printf( "type_specifier2 %p %s\n", $$, $$->type->aggregate.name ? $$->type->aggregate.name->c_str() : "(nil)" );
2461 // for ( Attribute * attr: reverseIterate( $$->attributes ) ) {
2462 // printf( "\tattr %s\n", attr->name.c_str() );
2463 // } // for
2464 }
[679e644]2465 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2466 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2467 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2468 {
[dea36ee]2469 if ( ! $3 ) { // field declarator ?
2470 $3 = DeclarationNode::newName( nullptr );
2471 } // if
[679a260]2472 $3->inLine = true;
[679e644]2473 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2474 distInl( $3 );
[8f91c9ae]2475 }
[e307e12]2476 | INLINE aggregate_control ';' // CFA
2477 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2478 | typedef_declaration ';' // CFA
2479 | cfa_field_declaring_list ';' // CFA, new style field declaration
2480 | EXTENSION cfa_field_declaring_list ';' // GCC
2481 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2482 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2483 { $$ = $2; } // mark all fields in list
[46fa473]2484 | cfa_typedef_declaration ';' // CFA
[b47b827]2485 | static_assert // C11
[4d51835]2486 ;
[b87a5ed]2487
[679e644]2488field_declaring_list_opt:
2489 // empty
2490 { $$ = nullptr; }
2491 | field_declarator
2492 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2493 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2494 ;
[51b73452]2495
[679e644]2496field_declarator:
[e07caa2]2497 bit_subrange_size // C special case, no field name
[4d51835]2498 { $$ = DeclarationNode::newBitfield( $1 ); }
2499 | variable_declarator bit_subrange_size_opt
[679e644]2500 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2501 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2502 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2503 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2504 { $$ = $1->addBitfield( $2 ); }
[679e644]2505 ;
2506
[e07caa2]2507field_abstract_list_opt:
2508 // empty
[dea36ee]2509 { $$ = nullptr; }
[e07caa2]2510 | field_abstract
2511 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2512 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2513 ;
2514
[e07caa2]2515field_abstract:
[f7e4db27]2516 // no bit fields
[e07caa2]2517 variable_abstract_declarator
[679e644]2518 ;
2519
2520cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2521 // bit-fields are handled by C declarations
[033ff37]2522 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2523 { $$ = $1->addName( $2 ); }
[033ff37]2524 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2525 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2526 ;
2527
2528cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2529 // bit-fields are handled by C declarations
[679e644]2530 cfa_abstract_declarator_tuple
2531 | cfa_field_abstract_list ','
2532 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2533 ;
[51b73452]2534
2535bit_subrange_size_opt:
[4d51835]2536 // empty
[58dd019]2537 { $$ = nullptr; }
[4d51835]2538 | bit_subrange_size
2539 ;
[51b73452]2540
2541bit_subrange_size:
[c786e1d]2542 ':' assignment_expression
[4d51835]2543 { $$ = $2; }
2544 ;
[51b73452]2545
[9e7236f4]2546enum_type:
[f9c3100]2547 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[b0d9ff7]2548 { $$ = DeclarationNode::newEnum( nullptr, $4, true, false )->addQualifiers( $2 ); }
[f9c3100]2549 | ENUM attribute_list_opt identifier
[d0ffed1]2550 { typedefTable.makeTypedef( *$3 ); }
2551 '{' enumerator_list comma_opt '}'
[b0d9ff7]2552 { $$ = DeclarationNode::newEnum( $3, $6, true, false )->addQualifiers( $2 ); }
[f9c3100]2553 | ENUM attribute_list_opt typedef_name // unqualified type name
[407bde5]2554 '{' enumerator_list comma_opt '}'
[b0d9ff7]2555 { $$ = DeclarationNode::newEnum( $3->name, $5, true, false )->addQualifiers( $2 ); }
[f9c3100]2556 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2557 {
[ae2f2ae]2558 if ( $3->storageClasses.val != 0 || $3->type->qualifiers.val != 0 )
[a77713b]2559 { SemanticError( yylloc, "storage-class and CV qualifiers are not meaningful for enumeration constants, which are const." ); }
[f135b50]2560
[b0d9ff7]2561 $$ = DeclarationNode::newEnum( nullptr, $7, true, true, $3 )->addQualifiers( $5 );
2562 }
2563 | ENUM '(' ')' attribute_list_opt '{' enumerator_list comma_opt '}'
2564 {
2565 $$ = DeclarationNode::newEnum( nullptr, $6, true, true )->addQualifiers( $4 );
[8bea701]2566 }
[9e7236f4]2567 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt identifier attribute_list_opt
[8bea701]2568 {
[98337569]2569 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]2570 typedefTable.makeTypedef( *$6 );
2571 }
2572 '{' enumerator_list comma_opt '}'
2573 {
[b0d9ff7]2574 $$ = DeclarationNode::newEnum( $6, $10, true, true, $3 )->addQualifiers( $5 )->addQualifiers( $7 );
[8bea701]2575 }
[b0d9ff7]2576 | ENUM '(' ')' attribute_list_opt identifier attribute_list_opt
2577 '{' enumerator_list comma_opt '}'
2578 {
2579 $$ = DeclarationNode::newEnum( $5, $8, true, true, nullptr )->addQualifiers( $4 )->addQualifiers( $6 );
[0bd46fd]2580 }
[f9c3100]2581 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt typedef_name attribute_list_opt '{' enumerator_list comma_opt '}'
[8bea701]2582 {
[b0d9ff7]2583 $$ = DeclarationNode::newEnum( $6->name, $9, true, true, $3 )->addQualifiers( $5 )->addQualifiers( $7 );
2584 }
2585 | ENUM '(' ')' attribute_list_opt typedef_name attribute_list_opt '{' enumerator_list comma_opt '}'
2586 {
2587 $$ = DeclarationNode::newEnum( $5->name, $8, true, true, nullptr )->addQualifiers( $4 )->addQualifiers( $6 );
[8bea701]2588 }
[d0ffed1]2589 | enum_type_nobody
2590 ;
2591
2592enum_type_nobody: // enum - {...}
[f9c3100]2593 ENUM attribute_list_opt identifier
[b0d9ff7]2594 { typedefTable.makeTypedef( *$3 ); $$ = DeclarationNode::newEnum( $3, 0, false, false )->addQualifiers( $2 ); }
[0bd46fd]2595 | ENUM attribute_list_opt type_name
[b0d9ff7]2596 { typedefTable.makeTypedef( *$3->type->symbolic.name ); $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false, false )->addQualifiers( $2 ); }
[4d51835]2597 ;
[51b73452]2598
2599enumerator_list:
[033ff37]2600 identifier_or_type_name enumerator_value_opt
[374cb117]2601 { $$ = DeclarationNode::newEnumValueGeneric( $1, $2 ); }
[f9c3100]2602 | INLINE type_name
[374cb117]2603 { $$ = DeclarationNode::newEnumValueGeneric( new string("inline"), nullptr ); }
[033ff37]2604 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[374cb117]2605 { $$ = $1->appendList( DeclarationNode::newEnumValueGeneric( $3, $4 ) ); }
[f9c3100]2606 | enumerator_list ',' INLINE type_name enumerator_value_opt
[374cb117]2607 { $$ = $1->appendList( DeclarationNode::newEnumValueGeneric( new string("inline"), nullptr ) ); }
[4d51835]2608 ;
[51b73452]2609
2610enumerator_value_opt:
[4d51835]2611 // empty
[58dd019]2612 { $$ = nullptr; }
[7991c7d]2613 | '=' constant_expression { $$ = new InitializerNode( $2 ); }
2614 | '=' '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $3, true ); }
2615 // | simple_assignment_operator initializer
2616 // { $$ = $1 == OperKinds::Assign ? $2 : $2->set_maybeConstructed( false ); }
[4d51835]2617 ;
[51b73452]2618
[5a51798]2619cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2620 // empty
[2a8427c6]2621 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2622 | ELLIPSIS
[58dd019]2623 { $$ = nullptr; }
[2a8427c6]2624 | cfa_abstract_parameter_list
[c0aa336]2625 | cfa_parameter_list
[c0a33d2]2626 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2627 { $$ = $1->appendList( $5 ); }
2628 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2629 { $$ = $1->addVarArgs(); }
[c0a33d2]2630 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2631 { $$ = $1->addVarArgs(); }
2632 ;
[b87a5ed]2633
[c0aa336]2634cfa_parameter_list: // CFA
2635 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2636 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2637 cfa_parameter_declaration
[c0a33d2]2638 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2639 { $$ = $1->appendList( $5 ); }
2640 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2641 { $$ = $1->appendList( $5 ); }
2642 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2643 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2644 ;
[b87a5ed]2645
[c0aa336]2646cfa_abstract_parameter_list: // CFA, new & old style abstract
2647 cfa_abstract_parameter_declaration
[c0a33d2]2648 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2649 { $$ = $1->appendList( $5 ); }
[4d51835]2650 ;
[51b73452]2651
2652parameter_type_list_opt:
[4d51835]2653 // empty
[58dd019]2654 { $$ = nullptr; }
[2a8427c6]2655 | ELLIPSIS
2656 { $$ = nullptr; }
2657 | parameter_list
[4d51835]2658 | parameter_list pop ',' push ELLIPSIS
2659 { $$ = $1->addVarArgs(); }
2660 ;
[b87a5ed]2661
2662parameter_list: // abstract + real
[4d51835]2663 abstract_parameter_declaration
2664 | parameter_declaration
2665 | parameter_list pop ',' push abstract_parameter_declaration
2666 { $$ = $1->appendList( $5 ); }
2667 | parameter_list pop ',' push parameter_declaration
2668 { $$ = $1->appendList( $5 ); }
2669 ;
[51b73452]2670
[de62360d]2671// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2672// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2673
[c0aa336]2674cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2675 parameter_declaration
[5a51798]2676 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2677 { $$ = $1->addName( $2 ); }
[5a51798]2678 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2679 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2680 { $$ = $1->addName( $2 ); }
[5a51798]2681 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2682 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2683 | cfa_function_specifier
[4d51835]2684 ;
[b87a5ed]2685
[c0aa336]2686cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2687 abstract_parameter_declaration
[c0aa336]2688 | cfa_identifier_parameter_declarator_no_tuple
2689 | cfa_abstract_tuple
2690 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2691 | type_qualifier_list cfa_abstract_tuple
[4d51835]2692 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2693 | cfa_abstract_function
[4d51835]2694 ;
[51b73452]2695
2696parameter_declaration:
[d0ffed1]2697 // No SUE declaration in parameter list.
[5a51798]2698 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2699 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2700 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2701 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2702 ;
[51b73452]2703
2704abstract_parameter_declaration:
[5a51798]2705 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2706 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2707 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2708 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2709 ;
[51b73452]2710
[c11e31c]2711// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2712// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2713// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2714
[b87a5ed]2715identifier_list: // K&R-style parameter list => no types
[033ff37]2716 identifier
[4d51835]2717 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2718 | identifier_list ',' identifier
[4d51835]2719 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2720 ;
[51b73452]2721
[2871210]2722identifier_or_type_name:
[4d51835]2723 identifier
2724 | TYPEDEFname
2725 | TYPEGENname
2726 ;
[51b73452]2727
[84d58c5]2728type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2729 cfa_abstract_declarator_tuple // CFA
[4d51835]2730 | type_specifier
[c0aa336]2731 | type_specifier abstract_declarator
[4d51835]2732 { $$ = $2->addType( $1 ); }
2733 ;
[b87a5ed]2734
[84d58c5]2735type: // typeof, assertion
2736 type_no_function
[c0aa336]2737 | cfa_abstract_function // CFA
[4d51835]2738 ;
[51b73452]2739
2740initializer_opt:
[4d51835]2741 // empty
[58dd019]2742 { $$ = nullptr; }
[f9c3100]2743 | simple_assignment_operator initializer { $$ = $1 == OperKinds::Assign ? $2 : $2->set_maybeConstructed( false ); }
2744 | '=' VOID { $$ = new InitializerNode( true ); }
[63b3279e]2745 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2746 ;
[51b73452]2747
2748initializer:
[de62360d]2749 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2750 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2751 ;
[51b73452]2752
[7fdb94e1]2753initializer_list_opt:
[097e2b0]2754 // empty
[58dd019]2755 { $$ = nullptr; }
[097e2b0]2756 | initializer
[4d51835]2757 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2758 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
[63b3279e]2759 | initializer_list_opt ',' designation initializer { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2760 ;
[b87a5ed]2761
[de62360d]2762// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2763// '=' to separator the designator from the initializer value, as in:
[c11e31c]2764//
[b87a5ed]2765// int x[10] = { [1] = 3 };
[c11e31c]2766//
[de62360d]2767// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2768// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2769// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2770// shift/reduce conflicts
[51b73452]2771
2772designation:
[4d51835]2773 designator_list ':' // C99, CFA uses ":" instead of "="
[e16eb460]2774 | identifier_at ':' // GCC, field name
[d1625f8]2775 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2776 ;
[51b73452]2777
[b87a5ed]2778designator_list: // C99
[4d51835]2779 designator
[2871210]2780 | designator_list designator
[4a063df]2781 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2782 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2783 ;
[51b73452]2784
2785designator:
[e16eb460]2786 '.' identifier_at // C99, field name
[d1625f8]2787 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2788 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2789 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2790 { $$ = $3; }
[c0a33d2]2791 | '[' push subrange pop ']' // CFA, multiple array elements
2792 { $$ = $3; }
2793 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2794 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2795 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2796 { $$ = $4; }
[4d51835]2797 ;
[51b73452]2798
[de62360d]2799// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2800// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2801//
2802// Overloading: function, data, and operator identifiers may be overloaded.
2803//
[3ca7ef3]2804// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2805// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2806// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2807//
[de62360d]2808// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2809// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2810//
2811// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2812// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2813// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2814// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2815// on type arguments of polymorphic functions.
[c11e31c]2816
[b87a5ed]2817type_parameter_list: // CFA
[67cf18c]2818 type_parameter
2819 | type_parameter_list ',' type_parameter
[4d51835]2820 { $$ = $1->appendList( $3 ); }
2821 ;
[b87a5ed]2822
[84d58c5]2823type_initializer_opt: // CFA
2824 // empty
2825 { $$ = nullptr; }
2826 | '=' type
2827 { $$ = $2; }
2828 ;
2829
[b87a5ed]2830type_parameter: // CFA
[033ff37]2831 type_class identifier_or_type_name
[408ab79]2832 {
2833 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[ec3f9c8]2834 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated, use T " ); }
2835 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated, use T &" ); }
2836 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated, use T ..." ); }
[fd54fef]2837 }
[5a51798]2838 type_initializer_opt assertion_list_opt
[67cf18c]2839 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2840 | identifier_or_type_name new_type_class
2841 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2842 type_initializer_opt assertion_list_opt
2843 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2844 | '[' identifier_or_type_name ']'
[b66d14a]2845 {
[6e50a6b]2846 typedefTable.addToScope( *$2, TYPEDIMname, "9" );
2847 $$ = DeclarationNode::newTypeParam( TypeDecl::Dimension, $2 );
[b66d14a]2848 }
[5a51798]2849 // | type_specifier identifier_parameter_declarator
[9997fee]2850 | assertion_list
[07de76b]2851 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2852 ;
[b87a5ed]2853
[5a51798]2854new_type_class: // CFA
2855 // empty
2856 { $$ = TypeDecl::Otype; }
2857 | '&'
2858 { $$ = TypeDecl::Dtype; }
2859 | '*'
[b66d14a]2860 { $$ = TypeDecl::DStype; } // dtype + sized
[2ac218d]2861 // | '(' '*' ')'
2862 // { $$ = TypeDecl::Ftype; }
[5a51798]2863 | ELLIPSIS
2864 { $$ = TypeDecl::Ttype; }
2865 ;
2866
[b87a5ed]2867type_class: // CFA
[4040425]2868 OTYPE
[07de76b]2869 { $$ = TypeDecl::Otype; }
[4d51835]2870 | DTYPE
[07de76b]2871 { $$ = TypeDecl::Dtype; }
[8f60f0b]2872 | FTYPE
[07de76b]2873 { $$ = TypeDecl::Ftype; }
[8f60f0b]2874 | TTYPE
[07de76b]2875 { $$ = TypeDecl::Ttype; }
[4d51835]2876 ;
[b87a5ed]2877
2878assertion_list_opt: // CFA
[4d51835]2879 // empty
[58dd019]2880 { $$ = nullptr; }
[9997fee]2881 | assertion_list
2882 ;
2883
2884assertion_list: // CFA
2885 assertion
2886 | assertion_list assertion
[3ca7ef3]2887 { $$ = $1->appendList( $2 ); }
[4d51835]2888 ;
[b87a5ed]2889
2890assertion: // CFA
[033ff37]2891 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2892 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2893 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2894 { $$ = $4; }
[35718a9]2895 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2896 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2897 ;
[b87a5ed]2898
[84d58c5]2899type_list: // CFA
2900 type
[513e165]2901 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2902 | assignment_expression
[84d58c5]2903 | type_list ',' type
[4a063df]2904 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2905 | type_list ',' assignment_expression
[6e50a6b]2906 { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2907 ;
[b87a5ed]2908
2909type_declaring_list: // CFA
[4040425]2910 OTYPE type_declarator
[4d51835]2911 { $$ = $2; }
[4040425]2912 | storage_class_list OTYPE type_declarator
[4d51835]2913 { $$ = $3->addQualifiers( $1 ); }
2914 | type_declaring_list ',' type_declarator
[a7c90d4]2915 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2916 ;
[b87a5ed]2917
2918type_declarator: // CFA
[4d51835]2919 type_declarator_name assertion_list_opt
2920 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2921 | type_declarator_name assertion_list_opt '=' type
[4d51835]2922 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2923 ;
[b87a5ed]2924
2925type_declarator_name: // CFA
[033ff37]2926 identifier_or_type_name
[4d51835]2927 {
[ecae5860]2928 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2929 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2930 }
[033ff37]2931 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2932 {
[ecae5860]2933 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2934 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2935 }
2936 ;
[b87a5ed]2937
[4040425]2938trait_specifier: // CFA
[033ff37]2939 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2940 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2941 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2942 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2943 ;
[b87a5ed]2944
[84d58c5]2945trait_declaration_list: // CFA
[4040425]2946 trait_declaration
[13e8427]2947 | trait_declaration_list pop push trait_declaration
2948 { $$ = $1->appendList( $4 ); }
[4d51835]2949 ;
[b87a5ed]2950
[84d58c5]2951trait_declaration: // CFA
[13e8427]2952 cfa_trait_declaring_list ';'
2953 | trait_declaring_list ';'
[4d51835]2954 ;
[b87a5ed]2955
[c0aa336]2956cfa_trait_declaring_list: // CFA
2957 cfa_variable_specifier
2958 | cfa_function_specifier
2959 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2960 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2961 ;
[b87a5ed]2962
[4040425]2963trait_declaring_list: // CFA
[4d51835]2964 type_specifier declarator
[7fdb94e1]2965 { $$ = $2->addType( $1 ); }
[4040425]2966 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2967 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2968 ;
[51b73452]2969
[c11e31c]2970//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2971
2972translation_unit:
[3d56d15b]2973 // empty, input file
[4d51835]2974 | external_definition_list
[a7741435]2975 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2976 ;
[51b73452]2977
2978external_definition_list:
[35718a9]2979 push external_definition pop
2980 { $$ = $2; }
[fc20514]2981 | external_definition_list push external_definition pop
2982 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2983 ;
[51b73452]2984
2985external_definition_list_opt:
[4d51835]2986 // empty
[58dd019]2987 { $$ = nullptr; }
[3d56d15b]2988 | external_definition_list
2989 ;
2990
2991up:
[fc20514]2992 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2993 ;
2994
2995down:
2996 { typedefTable.down(); }
[4d51835]2997 ;
[51b73452]2998
2999external_definition:
[2d019af]3000 DIRECTIVE
3001 { $$ = DeclarationNode::newDirectiveStmt( new StatementNode( build_directive( $1 ) ) ); }
3002 | declaration
[996c8ed]3003 | IDENTIFIER IDENTIFIER
3004 { IdentifierBeforeIdentifier( *$1.str, *$2.str, " declaration" ); $$ = nullptr; }
3005 | IDENTIFIER type_qualifier // syntax error
3006 { IdentifierBeforeType( *$1.str, "type qualifier" ); $$ = nullptr; }
3007 | IDENTIFIER storage_class // syntax error
3008 { IdentifierBeforeType( *$1.str, "storage class" ); $$ = nullptr; }
3009 | IDENTIFIER basic_type_name // syntax error
3010 { IdentifierBeforeType( *$1.str, "type" ); $$ = nullptr; }
3011 | IDENTIFIER TYPEDEFname // syntax error
3012 { IdentifierBeforeType( *$1.str, "type" ); $$ = nullptr; }
3013 | IDENTIFIER TYPEGENname // syntax error
3014 { IdentifierBeforeType( *$1.str, "type" ); $$ = nullptr; }
[4d51835]3015 | external_function_definition
[ecae5860]3016 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
3017 {
3018 distExt( $2 ); // mark all fields in list
3019 $$ = $2;
3020 }
[e994912]3021 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
[5e25953]3022 { $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) ); }
[aac37fa]3023 | EXTERN STRINGliteral
3024 {
3025 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
3026 linkage = LinkageSpec::update( yylloc, linkage, $2 );
3027 }
[ae2f2ae]3028 up external_definition down
[aac37fa]3029 {
3030 linkage = linkageStack.top();
3031 linkageStack.pop();
3032 $$ = $5;
3033 }
[c0aa336]3034 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]3035 {
[3b8e52c]3036 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]3037 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]3038 }
[3d56d15b]3039 '{' up external_definition_list_opt down '}'
[4d51835]3040 {
3041 linkage = linkageStack.top();
3042 linkageStack.pop();
[3d56d15b]3043 $$ = $6;
[8e9cbb2]3044 }
[b2ddaf3]3045 // global distribution
[9997fee]3046 | type_qualifier_list
3047 {
[3d56d15b]3048 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]3049 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]3050 }
3051 '{' up external_definition_list_opt down '}' // CFA, namespace
3052 {
[4c3ee8d]3053 distQual( $5, $1 );
[fc20514]3054 forall = false;
[3d56d15b]3055 $$ = $5;
[9997fee]3056 }
3057 | declaration_qualifier_list
3058 {
[4c3ee8d]3059 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]3060 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]3061 }
3062 '{' up external_definition_list_opt down '}' // CFA, namespace
3063 {
[4c3ee8d]3064 distQual( $5, $1 );
[fc20514]3065 forall = false;
[3d56d15b]3066 $$ = $5;
[9997fee]3067 }
3068 | declaration_qualifier_list type_qualifier_list
3069 {
[b2ddaf3]3070 if ( ($1->type && $1->type->qualifiers.val) || ($2->type && $2->type->qualifiers.val) ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
3071 if ( ($1->type && $1->type->forall) || ($2->type && $2->type->forall) ) forall = true; // remember generic type
[9997fee]3072 }
[3d56d15b]3073 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]3074 {
[284da8c]3075 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]3076 forall = false;
[3d56d15b]3077 $$ = $6;
[9997fee]3078 }
[4d51835]3079 ;
3080
3081external_function_definition:
3082 function_definition
[de62360d]3083 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]3084 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
3085 // Parsing is possible because function_definition does not appear in the context of an expression (nested
3086 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
3087 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]3088 | function_declarator compound_statement
[c0a33d2]3089 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]3090 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]3091 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]3092 ;
[51b73452]3093
[8b47e50]3094with_clause_opt:
3095 // empty
[9997fee]3096 { $$ = nullptr; forall = false; }
[d8454b9]3097 | WITH '(' tuple_expression_list ')' attribute_list_opt
3098 {
3099 $$ = $3; forall = false;
3100 if ( $5 ) {
3101 SemanticError( yylloc, "Attributes cannot be associated with function body. Move attribute(s) before \"with\" clause." );
3102 $$ = nullptr;
3103 } // if
3104 }
[8b47e50]3105 ;
3106
[51b73452]3107function_definition:
[8b47e50]3108 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]3109 {
[481115f]3110 // Add the function body to the last identifier in the function definition list, i.e., foo3:
3111 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]3112 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]3113 $$ = $1;
[4d51835]3114 }
[8b47e50]3115 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]3116 {
[c38ae92]3117 rebindForall( $1, $2 );
[7fdb94e1]3118 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
3119 }
3120 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
3121 {
3122 rebindForall( $1, $2 );
[5fcba14]3123 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]3124 }
[a16a7ec]3125 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]3126 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]3127 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]3128 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]3129 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]3130 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]3131 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]3132 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]3133 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]3134
3135 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]3136 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]3137 {
[c38ae92]3138 rebindForall( $1, $2 );
[5fcba14]3139 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]3140 }
[a16a7ec]3141 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]3142 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]3143 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]3144 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]3145 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]3146 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]3147 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]3148 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]3149 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]3150 ;
[51b73452]3151
3152declarator:
[4d51835]3153 variable_declarator
[c6b1105]3154 | variable_type_redeclarator
[4d51835]3155 | function_declarator
3156 ;
[51b73452]3157
3158subrange:
[4d51835]3159 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]3160 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]3161 ;
[b87a5ed]3162
3163asm_name_opt: // GCC
[4d51835]3164 // empty
[58dd019]3165 { $$ = nullptr; }
3166 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]3167 {
3168 DeclarationNode * name = new DeclarationNode();
3169 name->asmName = $3;
3170 $$ = name->addQualifiers( $5 );
3171 }
[4d51835]3172 ;
[b87a5ed]3173
3174attribute_list_opt: // GCC
[4d51835]3175 // empty
[58dd019]3176 { $$ = nullptr; }
[4d51835]3177 | attribute_list
3178 ;
[b87a5ed]3179
3180attribute_list: // GCC
[4d51835]3181 attribute
3182 | attribute_list attribute
[1db21619]3183 { $$ = $2->addQualifiers( $1 ); }
[4d51835]3184 ;
[b87a5ed]3185
3186attribute: // GCC
[44a81853]3187 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
3188 { $$ = $4; }
[4d51835]3189 ;
[b87a5ed]3190
[44a81853]3191attribute_name_list: // GCC
3192 attribute_name
3193 | attribute_name_list ',' attribute_name
[c0aa336]3194 { $$ = $3->addQualifiers( $1 ); }
[4d51835]3195 ;
[b87a5ed]3196
[44a81853]3197attribute_name: // GCC
[4d51835]3198 // empty
[44a81853]3199 { $$ = nullptr; }
3200 | attr_name
3201 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]3202 | attr_name '(' argument_expression_list_opt ')'
[44a81853]3203 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]3204 ;
[b87a5ed]3205
[44a81853]3206attr_name: // GCC
3207 IDENTIFIER
[5b2edbc]3208 | quasi_keyword
[44a81853]3209 | TYPEDEFname
3210 | TYPEGENname
[114014c]3211 | FALLTHROUGH
3212 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]3213 | CONST
[9ff56e7]3214 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]3215 ;
[51b73452]3216
[c11e31c]3217// ============================================================================
[de62360d]3218// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
3219// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
3220// in:
[c11e31c]3221//
[b87a5ed]3222// int (*f())[10] { ... };
3223// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]3224//
[de62360d]3225// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
3226// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]3227// ============================================================================
3228
3229// ----------------------------------------------------------------------------
[de62360d]3230// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
3231// to define a variable or function prototype, e.g.:
[c11e31c]3232//
[b87a5ed]3233// valid declaration invalid definition
3234// ----------------- ------------------
[4d51835]3235// int f; int f {}
3236// int *f; int *f {}
[b87a5ed]3237// int f[10]; int f[10] {}
[4d51835]3238// int (*f)(int); int (*f)(int) {}
[c11e31c]3239//
[de62360d]3240// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
3241// variable_declarator and function_declarator.
[c11e31c]3242// ----------------------------------------------------------------------------
3243
[de62360d]3244// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
3245// declaring an array of functions versus a pointer to an array of functions.
[51b73452]3246
[5e25953]3247paren_identifier:
[e16eb460]3248 identifier_at
[5e25953]3249 { $$ = DeclarationNode::newName( $1 ); }
3250 | '(' paren_identifier ')' // redundant parenthesis
3251 { $$ = $2; }
3252 ;
3253
[51b73452]3254variable_declarator:
[4d51835]3255 paren_identifier attribute_list_opt
[1db21619]3256 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3257 | variable_ptr
3258 | variable_array attribute_list_opt
[1db21619]3259 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3260 | variable_function attribute_list_opt
[1db21619]3261 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3262 ;
[51b73452]3263
3264variable_ptr:
[dd51906]3265 ptrref_operator variable_declarator
[ce8c12f]3266 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3267 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]3268 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3269 | '(' variable_ptr ')' attribute_list_opt // redundant parenthesis
3270 { $$ = $2->addQualifiers( $4 ); }
3271 | '(' attribute_list variable_ptr ')' attribute_list_opt // redundant parenthesis
3272 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3273 ;
[51b73452]3274
3275variable_array:
[4d51835]3276 paren_identifier array_dimension
3277 { $$ = $1->addArray( $2 ); }
3278 | '(' variable_ptr ')' array_dimension
3279 { $$ = $2->addArray( $4 ); }
[5e25953]3280 | '(' attribute_list variable_ptr ')' array_dimension
3281 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
3282 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3283 { $$ = $2->addArray( $4 ); }
[5e25953]3284 | '(' attribute_list variable_array ')' multi_array_dimension // redundant parenthesis
3285 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3286 | '(' variable_array ')' // redundant parenthesis
3287 { $$ = $2; }
[5e25953]3288 | '(' attribute_list variable_array ')' // redundant parenthesis
3289 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3290 ;
[51b73452]3291
3292variable_function:
[4d51835]3293 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3294 { $$ = $2->addParamList( $6 ); }
[5e25953]3295 | '(' attribute_list variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3296 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]3297 | '(' variable_function ')' // redundant parenthesis
3298 { $$ = $2; }
[5e25953]3299 | '(' attribute_list variable_function ')' // redundant parenthesis
3300 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3301 ;
[51b73452]3302
[c6b1105]3303// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
3304// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
3305// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]3306
3307function_declarator:
[4d51835]3308 function_no_ptr attribute_list_opt
[1db21619]3309 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3310 | function_ptr
3311 | function_array attribute_list_opt
[1db21619]3312 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3313 ;
[51b73452]3314
3315function_no_ptr:
[4d51835]3316 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3317 { $$ = $1->addParamList( $4 ); }
3318 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
3319 { $$ = $2->addParamList( $6 ); }
[5e25953]3320 | '(' attribute_list function_ptr ')' '(' push parameter_type_list_opt pop ')'
3321 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]3322 | '(' function_no_ptr ')' // redundant parenthesis
3323 { $$ = $2; }
[5e25953]3324 | '(' attribute_list function_no_ptr ')' // redundant parenthesis
3325 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3326 ;
[51b73452]3327
3328function_ptr:
[dd51906]3329 ptrref_operator function_declarator
[ce8c12f]3330 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3331 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]3332 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3333 | '(' function_ptr ')' attribute_list_opt
3334 { $$ = $2->addQualifiers( $4 ); }
3335 | '(' attribute_list function_ptr ')' attribute_list_opt
3336 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3337 ;
[51b73452]3338
3339function_array:
[4d51835]3340 '(' function_ptr ')' array_dimension
3341 { $$ = $2->addArray( $4 ); }
[5e25953]3342 | '(' attribute_list function_ptr ')' array_dimension
3343 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3344 | '(' function_array ')' multi_array_dimension // redundant parenthesis
3345 { $$ = $2->addArray( $4 ); }
[5e25953]3346 | '(' attribute_list function_array ')' multi_array_dimension // redundant parenthesis
3347 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]3348 | '(' function_array ')' // redundant parenthesis
3349 { $$ = $2; }
[5e25953]3350 | '(' attribute_list function_array ')' // redundant parenthesis
3351 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3352 ;
[51b73452]3353
[c0aa336]3354// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
3355//
3356// f( a, b, c ) int a, *b, c[]; {}
3357//
3358// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
3359// returning arrays and functions versus pointers to arrays and functions.
[51b73452]3360
[c0aa336]3361KR_function_declarator:
3362 KR_function_no_ptr
3363 | KR_function_ptr
3364 | KR_function_array
[4d51835]3365 ;
[51b73452]3366
[c0aa336]3367KR_function_no_ptr:
[4d51835]3368 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
3369 { $$ = $1->addIdList( $3 ); }
[c0a33d2]3370 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3371 { $$ = $2->addParamList( $6 ); }
[5e25953]3372 | '(' attribute_list KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
3373 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[c0aa336]3374 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]3375 { $$ = $2; }
[5e25953]3376 | '(' attribute_list KR_function_no_ptr ')' // redundant parenthesis
3377 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3378 ;
[51b73452]3379
[c0aa336]3380KR_function_ptr:
3381 ptrref_operator KR_function_declarator
[ce8c12f]3382 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3383 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]3384 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3385 | '(' KR_function_ptr ')'
[4d51835]3386 { $$ = $2; }
[5e25953]3387 | '(' attribute_list KR_function_ptr ')'
3388 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3389 ;
[51b73452]3390
[c0aa336]3391KR_function_array:
3392 '(' KR_function_ptr ')' array_dimension
[4d51835]3393 { $$ = $2->addArray( $4 ); }
[5e25953]3394 | '(' attribute_list KR_function_ptr ')' array_dimension
3395 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3396 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3397 { $$ = $2->addArray( $4 ); }
[5e25953]3398 | '(' attribute_list KR_function_array ')' multi_array_dimension // redundant parenthesis
3399 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3400 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]3401 { $$ = $2; }
[5e25953]3402 | '(' attribute_list KR_function_array ')' // redundant parenthesis
3403 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3404 ;
[51b73452]3405
[2871210]3406// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]3407//
[b87a5ed]3408// typedef int foo;
3409// {
3410// int foo; // redefine typedef name in new scope
3411// }
[c11e31c]3412//
[de62360d]3413// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3414// and functions versus pointers to arrays and functions.
[51b73452]3415
[2871210]3416paren_type:
[f9c3100]3417 typedef_name
[c4f68dc]3418 {
[f9c3100]3419 // hide type name in enclosing scope by variable name
3420 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
[c4f68dc]3421 }
[2871210]3422 | '(' paren_type ')'
[4d51835]3423 { $$ = $2; }
3424 ;
[51b73452]3425
[5e25953]3426variable_type_redeclarator:
3427 paren_type attribute_list_opt
3428 { $$ = $1->addQualifiers( $2 ); }
3429 | type_ptr
3430 | type_array attribute_list_opt
3431 { $$ = $1->addQualifiers( $2 ); }
3432 | type_function attribute_list_opt
3433 { $$ = $1->addQualifiers( $2 ); }
3434 ;
3435
[2871210]3436type_ptr:
[c6b1105]3437 ptrref_operator variable_type_redeclarator
[ce8c12f]3438 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3439 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3440 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3441 | '(' type_ptr ')' attribute_list_opt // redundant parenthesis
3442 { $$ = $2->addQualifiers( $4 ); }
3443 | '(' attribute_list type_ptr ')' attribute_list_opt // redundant parenthesis
3444 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3445 ;
[51b73452]3446
[2871210]3447type_array:
3448 paren_type array_dimension
[4d51835]3449 { $$ = $1->addArray( $2 ); }
[2871210]3450 | '(' type_ptr ')' array_dimension
[4d51835]3451 { $$ = $2->addArray( $4 ); }
[5e25953]3452 | '(' attribute_list type_ptr ')' array_dimension
3453 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3454 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3455 { $$ = $2->addArray( $4 ); }
[5e25953]3456 | '(' attribute_list type_array ')' multi_array_dimension // redundant parenthesis
3457 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3458 | '(' type_array ')' // redundant parenthesis
[4d51835]3459 { $$ = $2; }
[5e25953]3460 | '(' attribute_list type_array ')' // redundant parenthesis
3461 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3462 ;
[51b73452]3463
[2871210]3464type_function:
3465 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3466 { $$ = $1->addParamList( $4 ); }
[2871210]3467 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3468 { $$ = $2->addParamList( $6 ); }
[5e25953]3469 | '(' attribute_list type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3470 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[2871210]3471 | '(' type_function ')' // redundant parenthesis
[4d51835]3472 { $$ = $2; }
[5e25953]3473 | '(' attribute_list type_function ')' // redundant parenthesis
3474 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3475 ;
[51b73452]3476
[c0aa336]3477// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3478// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3479// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3480// pointers to arrays and functions.
[51b73452]3481
3482identifier_parameter_declarator:
[4d51835]3483 paren_identifier attribute_list_opt
[1db21619]3484 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3485 | '&' MUTEX paren_identifier attribute_list_opt
3486 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3487 | identifier_parameter_ptr
3488 | identifier_parameter_array attribute_list_opt
[1db21619]3489 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3490 | identifier_parameter_function attribute_list_opt
[1db21619]3491 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3492 ;
[51b73452]3493
3494identifier_parameter_ptr:
[dd51906]3495 ptrref_operator identifier_parameter_declarator
[ce8c12f]3496 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3497 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3498 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3499 | '(' identifier_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3500 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3501 ;
[51b73452]3502
3503identifier_parameter_array:
[4d51835]3504 paren_identifier array_parameter_dimension
3505 { $$ = $1->addArray( $2 ); }
3506 | '(' identifier_parameter_ptr ')' array_dimension
3507 { $$ = $2->addArray( $4 ); }
3508 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3509 { $$ = $2->addArray( $4 ); }
3510 | '(' identifier_parameter_array ')' // redundant parenthesis
3511 { $$ = $2; }
3512 ;
[51b73452]3513
3514identifier_parameter_function:
[c0a33d2]3515 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3516 { $$ = $1->addParamList( $4 ); }
3517 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3518 { $$ = $2->addParamList( $6 ); }
[4d51835]3519 | '(' identifier_parameter_function ')' // redundant parenthesis
3520 { $$ = $2; }
3521 ;
[b87a5ed]3522
[de62360d]3523// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3524// e.g.:
[c11e31c]3525//
[b87a5ed]3526// typedef int foo;
[114014c]3527// forall( otype T ) struct foo;
[b87a5ed]3528// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3529//
[c0aa336]3530// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3531
[2871210]3532type_parameter_redeclarator:
[f9c3100]3533 typedef_name attribute_list_opt
[1db21619]3534 { $$ = $1->addQualifiers( $2 ); }
[f9c3100]3535 | '&' MUTEX typedef_name attribute_list_opt
[b6b3c42]3536 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3537 | type_parameter_ptr
3538 | type_parameter_array attribute_list_opt
[1db21619]3539 { $$ = $1->addQualifiers( $2 ); }
[2871210]3540 | type_parameter_function attribute_list_opt
[1db21619]3541 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3542 ;
[51b73452]3543
[f9c3100]3544typedef_name:
[4d51835]3545 TYPEDEFname
[7fdb94e1]3546 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3547 | TYPEGENname
[7fdb94e1]3548 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3549 ;
[51b73452]3550
[2871210]3551type_parameter_ptr:
[dd51906]3552 ptrref_operator type_parameter_redeclarator
[ce8c12f]3553 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3554 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3555 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3556 | '(' type_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3557 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3558 ;
[51b73452]3559
[2871210]3560type_parameter_array:
[f9c3100]3561 typedef_name array_parameter_dimension
[4d51835]3562 { $$ = $1->addArray( $2 ); }
[2871210]3563 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3564 { $$ = $2->addArray( $4 ); }
3565 ;
[51b73452]3566
[2871210]3567type_parameter_function:
[f9c3100]3568 typedef_name '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[c0a33d2]3569 { $$ = $1->addParamList( $4 ); }
3570 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3571 { $$ = $2->addParamList( $6 ); }
[4d51835]3572 ;
[b87a5ed]3573
[de62360d]3574// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3575// which the type applies, e.g.:
[c11e31c]3576//
[b87a5ed]3577// sizeof( int );
[c0aa336]3578// sizeof( int * );
[b87a5ed]3579// sizeof( int [10] );
[c0aa336]3580// sizeof( int (*)() );
3581// sizeof( int () );
[c11e31c]3582//
[de62360d]3583// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3584// and functions versus pointers to arrays and functions.
[51b73452]3585
3586abstract_declarator:
[4d51835]3587 abstract_ptr
3588 | abstract_array attribute_list_opt
[1db21619]3589 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3590 | abstract_function attribute_list_opt
[1db21619]3591 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3592 ;
[51b73452]3593
3594abstract_ptr:
[dd51906]3595 ptrref_operator
[ce8c12f]3596 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3597 | ptrref_operator type_qualifier_list
[ce8c12f]3598 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3599 | ptrref_operator abstract_declarator
[ce8c12f]3600 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3601 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3602 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3603 | '(' abstract_ptr ')' attribute_list_opt
3604 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3605 ;
[51b73452]3606
3607abstract_array:
[4d51835]3608 array_dimension
3609 | '(' abstract_ptr ')' array_dimension
3610 { $$ = $2->addArray( $4 ); }
3611 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3612 { $$ = $2->addArray( $4 ); }
3613 | '(' abstract_array ')' // redundant parenthesis
3614 { $$ = $2; }
3615 ;
[51b73452]3616
3617abstract_function:
[c0a33d2]3618 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3619 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3620 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3621 { $$ = $2->addParamList( $6 ); }
[4d51835]3622 | '(' abstract_function ')' // redundant parenthesis
3623 { $$ = $2; }
3624 ;
[51b73452]3625
3626array_dimension:
[4d51835]3627 // Only the first dimension can be empty.
[2871210]3628 '[' ']'
[4d51835]3629 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3630 | '[' ']' multi_array_dimension
3631 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[6a99803]3632 | '[' push assignment_expression pop ',' comma_expression ']'
3633 { $$ = DeclarationNode::newArray( $3, 0, false )->addArray( DeclarationNode::newArray( $6, 0, false ) ); }
3634 // { SemanticError( yylloc, "New array dimension is currently unimplemented." ); $$ = nullptr; }
[4d51835]3635 | multi_array_dimension
3636 ;
[51b73452]3637
3638multi_array_dimension:
[c0a33d2]3639 '[' push assignment_expression pop ']'
3640 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3641 | '[' push '*' pop ']' // C99
[4d51835]3642 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3643 | multi_array_dimension '[' push assignment_expression pop ']'
3644 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3645 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3646 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3647 ;
[51b73452]3648
[c11e31c]3649// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3650// identifier to which the type applies, e.g.:
3651//
[c0aa336]3652// int f( int ); // not handled here
3653// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3654// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3655// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3656//
[de62360d]3657// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3658// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3659// special meaning of parenthesis around a typedef name:
3660//
3661// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3662// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3663// not as redundant parentheses around the identifier."
3664//
3665// For example:
3666//
3667// typedef float T;
3668// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3669// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3670// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3671// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3672//
3673// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3674// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3675// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3676// functions.
[51b73452]3677
3678abstract_parameter_declarator:
[4d51835]3679 abstract_parameter_ptr
[b6b3c42]3680 | '&' MUTEX attribute_list_opt
3681 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3682 | abstract_parameter_array attribute_list_opt
[1db21619]3683 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3684 | abstract_parameter_function attribute_list_opt
[1db21619]3685 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3686 ;
[51b73452]3687
3688abstract_parameter_ptr:
[dd51906]3689 ptrref_operator
[ce8c12f]3690 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3691 | ptrref_operator type_qualifier_list
[ce8c12f]3692 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3693 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3694 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3695 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3696 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3697 | '(' abstract_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3698 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3699 ;
[51b73452]3700
3701abstract_parameter_array:
[4d51835]3702 array_parameter_dimension
3703 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3704 { $$ = $2->addArray( $4 ); }
3705 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3706 { $$ = $2->addArray( $4 ); }
3707 | '(' abstract_parameter_array ')' // redundant parenthesis
3708 { $$ = $2; }
3709 ;
[51b73452]3710
3711abstract_parameter_function:
[c0a33d2]3712 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3713 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3714 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3715 { $$ = $2->addParamList( $6 ); }
[4d51835]3716 | '(' abstract_parameter_function ')' // redundant parenthesis
3717 { $$ = $2; }
3718 ;
[51b73452]3719
3720array_parameter_dimension:
[4d51835]3721 // Only the first dimension can be empty or have qualifiers.
3722 array_parameter_1st_dimension
3723 | array_parameter_1st_dimension multi_array_dimension
3724 { $$ = $1->addArray( $2 ); }
3725 | multi_array_dimension
3726 ;
[51b73452]3727
[c11e31c]3728// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3729//
[de62360d]3730// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3731// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3732
3733array_parameter_1st_dimension:
[2871210]3734 '[' ']'
[4d51835]3735 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3736 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3737 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3738 { $$ = DeclarationNode::newVarArray( $3 ); }
3739 | '[' push type_qualifier_list pop ']'
3740 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3741 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3742 | '[' push type_qualifier_list assignment_expression pop ']'
3743 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3744 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3745 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3746 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3747 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3748 ;
[b87a5ed]3749
[c0aa336]3750// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3751//
[c0aa336]3752// struct S {
3753// int;
3754// int *;
3755// int [10];
3756// int (*)();
3757// };
[51b73452]3758
3759variable_abstract_declarator:
[4d51835]3760 variable_abstract_ptr
3761 | variable_abstract_array attribute_list_opt
[1db21619]3762 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3763 | variable_abstract_function attribute_list_opt
[1db21619]3764 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3765 ;
[51b73452]3766
3767variable_abstract_ptr:
[dd51906]3768 ptrref_operator
[ce8c12f]3769 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3770 | ptrref_operator type_qualifier_list
[ce8c12f]3771 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3772 | ptrref_operator variable_abstract_declarator
[ce8c12f]3773 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3774 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3775 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3776 | '(' variable_abstract_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3777 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3778 ;
[51b73452]3779
3780variable_abstract_array:
[4d51835]3781 array_dimension
3782 | '(' variable_abstract_ptr ')' array_dimension
3783 { $$ = $2->addArray( $4 ); }
3784 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3785 { $$ = $2->addArray( $4 ); }
3786 | '(' variable_abstract_array ')' // redundant parenthesis
3787 { $$ = $2; }
3788 ;
[51b73452]3789
3790variable_abstract_function:
[c0a33d2]3791 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3792 { $$ = $2->addParamList( $6 ); }
[4d51835]3793 | '(' variable_abstract_function ')' // redundant parenthesis
3794 { $$ = $2; }
3795 ;
[b87a5ed]3796
[de62360d]3797// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3798// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3799
[c0aa336]3800cfa_identifier_parameter_declarator_tuple: // CFA
3801 cfa_identifier_parameter_declarator_no_tuple
3802 | cfa_abstract_tuple
3803 | type_qualifier_list cfa_abstract_tuple
[4d51835]3804 { $$ = $2->addQualifiers( $1 ); }
3805 ;
[b87a5ed]3806
[c0aa336]3807cfa_identifier_parameter_declarator_no_tuple: // CFA
3808 cfa_identifier_parameter_ptr
3809 | cfa_identifier_parameter_array
[4d51835]3810 ;
[b87a5ed]3811
[c0aa336]3812cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3813 // No SUE declaration in parameter list.
3814 ptrref_operator type_specifier_nobody
[ce8c12f]3815 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3816 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3817 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3818 | ptrref_operator cfa_abstract_function
[ce8c12f]3819 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3820 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3821 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3822 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3823 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3824 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3825 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3826 ;
[b87a5ed]3827
[c0aa336]3828cfa_identifier_parameter_array: // CFA
[de62360d]3829 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3830 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3831 '[' ']' type_specifier_nobody
[2871210]3832 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3833 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3834 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3835 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3836 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3837 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3838 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3839 | multi_array_dimension type_specifier_nobody
[4d51835]3840 { $$ = $2->addNewArray( $1 ); }
[9059213]3841
[c0aa336]3842 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3843 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3844 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3845 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3846 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3847 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3848 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3849 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3850 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3851 { $$ = $2->addNewArray( $1 ); }
3852 ;
[51b73452]3853
[c0aa336]3854cfa_array_parameter_1st_dimension:
[c0a33d2]3855 '[' push type_qualifier_list '*' pop ']' // remaining C99
3856 { $$ = DeclarationNode::newVarArray( $3 ); }
3857 | '[' push type_qualifier_list assignment_expression pop ']'
3858 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3859 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3860 // declaration_qualifier_list must be used because of shift/reduce conflict with
3861 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3862 // appear in this context.
[c0a33d2]3863 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3864 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3865 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3866 ;
[b87a5ed]3867
[de62360d]3868// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3869// identifier to which the type applies, e.g.:
[c11e31c]3870//
[b87a5ed]3871// [int] f( int ); // abstract variable parameter; no parameter name specified
3872// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3873//
3874// These rules need LR(3):
3875//
[c0aa336]3876// cfa_abstract_tuple identifier_or_type_name
[40de461]3877// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3878//
3879// since a function return type can be syntactically identical to a tuple type:
3880//
[b87a5ed]3881// [int, int] t;
3882// [int, int] f( int );
[c11e31c]3883//
[2871210]3884// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3885// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3886// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3887// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3888
[c0aa336]3889cfa_abstract_declarator_tuple: // CFA
3890 cfa_abstract_tuple
3891 | type_qualifier_list cfa_abstract_tuple
[4d51835]3892 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3893 | cfa_abstract_declarator_no_tuple
[4d51835]3894 ;
[b87a5ed]3895
[c0aa336]3896cfa_abstract_declarator_no_tuple: // CFA
3897 cfa_abstract_ptr
3898 | cfa_abstract_array
[4d51835]3899 ;
[b87a5ed]3900
[c0aa336]3901cfa_abstract_ptr: // CFA
[dd51906]3902 ptrref_operator type_specifier
[ce8c12f]3903 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3904 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3905 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3906 | ptrref_operator cfa_abstract_function
[ce8c12f]3907 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3908 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3909 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3910 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3911 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3912 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3913 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3914 ;
[b87a5ed]3915
[c0aa336]3916cfa_abstract_array: // CFA
[de62360d]3917 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3918 // empty (void) function return type.
[2871210]3919 '[' ']' type_specifier
[2298f728]3920 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3921 | '[' ']' multi_array_dimension type_specifier
[2298f728]3922 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3923 | multi_array_dimension type_specifier
3924 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3925 | '[' ']' cfa_abstract_ptr
[2298f728]3926 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3927 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3928 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3929 | multi_array_dimension cfa_abstract_ptr
[4d51835]3930 { $$ = $2->addNewArray( $1 ); }
3931 ;
[b87a5ed]3932
[c0aa336]3933cfa_abstract_tuple: // CFA
[c0a33d2]3934 '[' push cfa_abstract_parameter_list pop ']'
3935 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3936 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3937 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3938 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3939 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3940 ;
[b87a5ed]3941
[c0aa336]3942cfa_abstract_function: // CFA
[40de461]3943// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3944// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3945 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3946 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3947 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3948 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3949 ;
[b87a5ed]3950
[de62360d]3951// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3952// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3953//
[de62360d]3954// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3955// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3956//
3957// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3958// prototype-format parameter type declarators) is an obsolescent feature."
3959//
[de62360d]3960// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3961// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3962
[c11e31c]3963//************************* MISCELLANEOUS ********************************
[51b73452]3964
[b87a5ed]3965comma_opt: // redundant comma
[4d51835]3966 // empty
3967 | ','
3968 ;
[51b73452]3969
[5a51798]3970default_initializer_opt:
[4d51835]3971 // empty
[58dd019]3972 { $$ = nullptr; }
[4d51835]3973 | '=' assignment_expression
3974 { $$ = $2; }
3975 ;
[51b73452]3976
3977%%
[a1c9ddd]3978
[c11e31c]3979// ----end of grammar----
[51b73452]3980
[c11e31c]3981// Local Variables: //
[b87a5ed]3982// mode: c++ //
[de62360d]3983// tab-width: 4 //
[c11e31c]3984// compile-command: "make install" //
3985// End: //
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