source: src/Parser/DeclarationNode.cc@ d4da1535

ADT ast-experimental enum pthread-emulation qualifiedEnum
Last change on this file since d4da1535 was 93bbbc4, checked in by Peter A. Buhr <pabuhr@…>, 4 years ago

update parser for vtable declarations
  • Property mode set to 100644
File size: 39.7 KB
Line 
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//
7// DeclarationNode.cc --
8//
9// Author : Rodolfo G. Esteves
10// Created On : Sat May 16 12:34:05 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Wed Jul 14 17:36:57 2021
13// Update Count : 1154
14//
15
16#include <cassert> // for assert, assertf, strict_dynamic_cast
17#include <iterator> // for back_insert_iterator
18#include <list> // for list
19#include <memory> // for unique_ptr
20#include <ostream> // for operator<<, ostream, basic_ostream
21#include <string> // for string, operator+, allocator, char...
22
23#include "Common/SemanticError.h" // for SemanticError
24#include "Common/UniqueName.h" // for UniqueName
25#include "Common/utility.h" // for maybeClone, maybeBuild, CodeLocation
26#include "Parser/ParseNode.h" // for DeclarationNode, ExpressionNode
27#include "SynTree/LinkageSpec.h" // for Spec, linkageName, Cforall
28#include "SynTree/Attribute.h" // for Attribute
29#include "SynTree/Declaration.h" // for TypeDecl, ObjectDecl, Declaration
30#include "SynTree/Expression.h" // for Expression, ConstantExpr
31#include "SynTree/Statement.h" // for AsmStmt
32#include "SynTree/Type.h" // for Type, Type::StorageClasses, Type::...
33#include "TypeData.h" // for TypeData, TypeData::Aggregate_t
34#include "TypedefTable.h" // for TypedefTable
35
36class Initializer;
37
38extern TypedefTable typedefTable;
39
40using namespace std;
41
42// These must harmonize with the corresponding DeclarationNode enumerations.
43const char * DeclarationNode::basicTypeNames[] = { "void", "_Bool", "char", "int", "int128",
44 "float", "double", "long double", "float80", "float128",
45 "_float16", "_float32", "_float32x", "_float64", "_float64x", "_float128", "_float128x", "NoBasicTypeNames" };
46const char * DeclarationNode::complexTypeNames[] = { "_Complex", "NoComplexTypeNames", "_Imaginary" }; // Imaginary unsupported => parse, but make invisible and print error message
47const char * DeclarationNode::signednessNames[] = { "signed", "unsigned", "NoSignednessNames" };
48const char * DeclarationNode::lengthNames[] = { "short", "long", "long long", "NoLengthNames" };
49const char * DeclarationNode::builtinTypeNames[] = { "__builtin_va_list", "__auto_type", "zero_t", "one_t", "NoBuiltinTypeNames" };
50
51UniqueName DeclarationNode::anonymous( "__anonymous" );
52
53extern LinkageSpec::Spec linkage; // defined in parser.yy
54
55DeclarationNode::DeclarationNode() :
56 linkage( ::linkage ) {
57
58// variable.name = nullptr;
59 variable.tyClass = TypeDecl::NUMBER_OF_KINDS;
60 variable.assertions = nullptr;
61 variable.initializer = nullptr;
62
63// attr.name = nullptr;
64 attr.expr = nullptr;
65 attr.type = nullptr;
66
67 assert.condition = nullptr;
68 assert.message = nullptr;
69}
70
71DeclarationNode::~DeclarationNode() {
72// delete attr.name;
73 delete attr.expr;
74 delete attr.type;
75
76// delete variable.name;
77 delete variable.assertions;
78 delete variable.initializer;
79
80 delete type;
81 delete bitfieldWidth;
82
83 delete asmStmt;
84 // asmName, no delete, passed to next stage
85 delete initializer;
86
87 delete assert.condition;
88 delete assert.message;
89}
90
91DeclarationNode * DeclarationNode::clone() const {
92 DeclarationNode * newnode = new DeclarationNode;
93 newnode->set_next( maybeClone( get_next() ) );
94 newnode->name = name ? new string( *name ) : nullptr;
95
96 newnode->builtin = NoBuiltinType;
97 newnode->type = maybeClone( type );
98 newnode->inLine = inLine;
99 newnode->storageClasses = storageClasses;
100 newnode->funcSpecs = funcSpecs;
101 newnode->bitfieldWidth = maybeClone( bitfieldWidth );
102 newnode->enumeratorValue.reset( maybeClone( enumeratorValue.get() ) );
103 newnode->hasEllipsis = hasEllipsis;
104 newnode->linkage = linkage;
105 newnode->asmName = maybeClone( asmName );
106 cloneAll( attributes, newnode->attributes );
107 newnode->initializer = maybeClone( initializer );
108 newnode->extension = extension;
109 newnode->asmStmt = maybeClone( asmStmt );
110 newnode->error = error;
111
112// newnode->variable.name = variable.name ? new string( *variable.name ) : nullptr;
113 newnode->variable.tyClass = variable.tyClass;
114 newnode->variable.assertions = maybeClone( variable.assertions );
115 newnode->variable.initializer = maybeClone( variable.initializer );
116
117// newnode->attr.name = attr.name ? new string( *attr.name ) : nullptr;
118 newnode->attr.expr = maybeClone( attr.expr );
119 newnode->attr.type = maybeClone( attr.type );
120
121 newnode->assert.condition = maybeClone( assert.condition );
122 newnode->assert.message = maybeClone( assert.message );
123 return newnode;
124} // DeclarationNode::clone
125
126void DeclarationNode::print( std::ostream & os, int indent ) const {
127 os << string( indent, ' ' );
128 if ( name ) {
129 os << *name << ": ";
130 } else {
131 os << "unnamed: ";
132 } // if
133
134 if ( linkage != LinkageSpec::Cforall ) {
135 os << LinkageSpec::name( linkage ) << " ";
136 } // if
137
138 storageClasses.print( os );
139 funcSpecs.print( os );
140
141 if ( type ) {
142 type->print( os, indent );
143 } else {
144 os << "untyped entity ";
145 } // if
146
147 if ( bitfieldWidth ) {
148 os << endl << string( indent + 2, ' ' ) << "with bitfield width ";
149 bitfieldWidth->printOneLine( os );
150 } // if
151
152 if ( initializer ) {
153 os << endl << string( indent + 2, ' ' ) << "with initializer ";
154 initializer->printOneLine( os );
155 os << " maybe constructed? " << initializer->get_maybeConstructed();
156
157 } // if
158
159 os << endl;
160}
161
162void DeclarationNode::printList( std::ostream & os, int indent ) const {
163 ParseNode::printList( os, indent );
164 if ( hasEllipsis ) {
165 os << string( indent, ' ' ) << "and a variable number of other arguments" << endl;
166 } // if
167}
168
169DeclarationNode * DeclarationNode::newStorageClass( Type::StorageClasses sc ) {
170 DeclarationNode * newnode = new DeclarationNode;
171 newnode->storageClasses = sc;
172 return newnode;
173} // DeclarationNode::newStorageClass
174
175DeclarationNode * DeclarationNode::newFuncSpecifier( Type::FuncSpecifiers fs ) {
176 DeclarationNode * newnode = new DeclarationNode;
177 newnode->funcSpecs = fs;
178 return newnode;
179} // DeclarationNode::newFuncSpecifier
180
181DeclarationNode * DeclarationNode::newTypeQualifier( Type::Qualifiers tq ) {
182 DeclarationNode * newnode = new DeclarationNode;
183 newnode->type = new TypeData();
184 newnode->type->qualifiers = tq;
185 return newnode;
186} // DeclarationNode::newQualifier
187
188DeclarationNode * DeclarationNode::newBasicType( BasicType bt ) {
189 DeclarationNode * newnode = new DeclarationNode;
190 newnode->type = new TypeData( TypeData::Basic );
191 newnode->type->basictype = bt;
192 return newnode;
193} // DeclarationNode::newBasicType
194
195DeclarationNode * DeclarationNode::newComplexType( ComplexType ct ) {
196 DeclarationNode * newnode = new DeclarationNode;
197 newnode->type = new TypeData( TypeData::Basic );
198 newnode->type->complextype = ct;
199 return newnode;
200} // DeclarationNode::newComplexType
201
202DeclarationNode * DeclarationNode::newSignedNess( Signedness sn ) {
203 DeclarationNode * newnode = new DeclarationNode;
204 newnode->type = new TypeData( TypeData::Basic );
205 newnode->type->signedness = sn;
206 return newnode;
207} // DeclarationNode::newSignedNess
208
209DeclarationNode * DeclarationNode::newLength( Length lnth ) {
210 DeclarationNode * newnode = new DeclarationNode;
211 newnode->type = new TypeData( TypeData::Basic );
212 newnode->type->length = lnth;
213 return newnode;
214} // DeclarationNode::newLength
215
216DeclarationNode * DeclarationNode::newForall( DeclarationNode * forall ) {
217 DeclarationNode * newnode = new DeclarationNode;
218 newnode->type = new TypeData( TypeData::Unknown );
219 newnode->type->forall = forall;
220 return newnode;
221} // DeclarationNode::newForall
222
223DeclarationNode * DeclarationNode::newFromGlobalScope() {
224 DeclarationNode * newnode = new DeclarationNode;
225 newnode->type = new TypeData( TypeData::GlobalScope );
226 return newnode;
227}
228
229DeclarationNode * DeclarationNode::newQualifiedType( DeclarationNode * parent, DeclarationNode * child) {
230 DeclarationNode * newnode = new DeclarationNode;
231 newnode->type = new TypeData( TypeData::Qualified );
232 newnode->type->qualified.parent = parent->type;
233 newnode->type->qualified.child = child->type;
234 parent->type = nullptr;
235 child->type = nullptr;
236 delete parent;
237 delete child;
238 return newnode;
239}
240
241DeclarationNode * DeclarationNode::newAggregate( AggregateDecl::Aggregate kind, const string * name, ExpressionNode * actuals, DeclarationNode * fields, bool body ) {
242 DeclarationNode * newnode = new DeclarationNode;
243 newnode->type = new TypeData( TypeData::Aggregate );
244 newnode->type->aggregate.kind = kind;
245 newnode->type->aggregate.name = name == nullptr ? new string( DeclarationNode::anonymous.newName() ) : name;
246 newnode->type->aggregate.actuals = actuals;
247 newnode->type->aggregate.fields = fields;
248 newnode->type->aggregate.body = body;
249 newnode->type->aggregate.tagged = false;
250 newnode->type->aggregate.parent = nullptr;
251 newnode->type->aggregate.anon = name == nullptr;
252 return newnode;
253} // DeclarationNode::newAggregate
254
255DeclarationNode * DeclarationNode::newEnum( const string * name, DeclarationNode * constants, bool body ) {
256 DeclarationNode * newnode = new DeclarationNode;
257 newnode->type = new TypeData( TypeData::Enum );
258 newnode->type->enumeration.name = name == nullptr ? new string( DeclarationNode::anonymous.newName() ) : name;
259 newnode->type->enumeration.constants = constants;
260 newnode->type->enumeration.body = body;
261 newnode->type->enumeration.anon = name == nullptr;
262 return newnode;
263} // DeclarationNode::newEnum
264
265DeclarationNode * DeclarationNode::newName( const string * name ) {
266 DeclarationNode * newnode = new DeclarationNode;
267 assert( ! newnode->name );
268 newnode->name = name;
269 return newnode;
270} // DeclarationNode::newName
271
272DeclarationNode * DeclarationNode::newEnumConstant( const string * name, ExpressionNode * constant ) {
273 DeclarationNode * newnode = newName( name );
274 newnode->enumeratorValue.reset( constant );
275 return newnode;
276} // DeclarationNode::newEnumConstant
277
278DeclarationNode * DeclarationNode::newFromTypedef( const string * name ) {
279 DeclarationNode * newnode = new DeclarationNode;
280 newnode->type = new TypeData( TypeData::SymbolicInst );
281 newnode->type->symbolic.name = name;
282 newnode->type->symbolic.isTypedef = true;
283 newnode->type->symbolic.params = nullptr;
284 return newnode;
285} // DeclarationNode::newFromTypedef
286
287DeclarationNode * DeclarationNode::newFromTypeGen( const string * name, ExpressionNode * params ) {
288 DeclarationNode * newnode = new DeclarationNode;
289 newnode->type = new TypeData( TypeData::SymbolicInst );
290 newnode->type->symbolic.name = name;
291 newnode->type->symbolic.isTypedef = false;
292 newnode->type->symbolic.actuals = params;
293 return newnode;
294} // DeclarationNode::newFromTypeGen
295
296DeclarationNode * DeclarationNode::newTypeParam( TypeDecl::Kind tc, const string * name ) {
297 DeclarationNode * newnode = newName( name );
298 newnode->type = nullptr;
299 newnode->variable.tyClass = tc;
300 newnode->variable.assertions = nullptr;
301 return newnode;
302} // DeclarationNode::newTypeParam
303
304DeclarationNode * DeclarationNode::newTrait( const string * name, DeclarationNode * params, DeclarationNode * asserts ) {
305 DeclarationNode * newnode = new DeclarationNode;
306 newnode->type = new TypeData( TypeData::Aggregate );
307 newnode->type->aggregate.name = name;
308 newnode->type->aggregate.kind = AggregateDecl::Trait;
309 newnode->type->aggregate.params = params;
310 newnode->type->aggregate.fields = asserts;
311 return newnode;
312} // DeclarationNode::newTrait
313
314DeclarationNode * DeclarationNode::newTraitUse( const string * name, ExpressionNode * params ) {
315 DeclarationNode * newnode = new DeclarationNode;
316 newnode->type = new TypeData( TypeData::AggregateInst );
317 newnode->type->aggInst.aggregate = new TypeData( TypeData::Aggregate );
318 newnode->type->aggInst.aggregate->aggregate.kind = AggregateDecl::Trait;
319 newnode->type->aggInst.aggregate->aggregate.name = name;
320 newnode->type->aggInst.params = params;
321 return newnode;
322} // DeclarationNode::newTraitUse
323
324DeclarationNode * DeclarationNode::newTypeDecl( const string * name, DeclarationNode * typeParams ) {
325 DeclarationNode * newnode = newName( name );
326 newnode->type = new TypeData( TypeData::Symbolic );
327 newnode->type->symbolic.isTypedef = false;
328 newnode->type->symbolic.params = typeParams;
329 return newnode;
330} // DeclarationNode::newTypeDecl
331
332DeclarationNode * DeclarationNode::newPointer( DeclarationNode * qualifiers, OperKinds kind ) {
333 DeclarationNode * newnode = new DeclarationNode;
334 newnode->type = new TypeData( kind == OperKinds::PointTo ? TypeData::Pointer : TypeData::Reference );
335 if ( kind == OperKinds::And ) {
336 // T && is parsed as 'And' operator rather than two references => add a second reference type
337 TypeData * td = new TypeData( TypeData::Reference );
338 td->base = newnode->type;
339 newnode->type = td;
340 }
341 if ( qualifiers ) {
342 return newnode->addQualifiers( qualifiers );
343 } else {
344 return newnode;
345 } // if
346} // DeclarationNode::newPointer
347
348DeclarationNode * DeclarationNode::newArray( ExpressionNode * size, DeclarationNode * qualifiers, bool isStatic ) {
349 DeclarationNode * newnode = new DeclarationNode;
350 newnode->type = new TypeData( TypeData::Array );
351 newnode->type->array.dimension = size;
352 newnode->type->array.isStatic = isStatic;
353 if ( newnode->type->array.dimension == nullptr || newnode->type->array.dimension->isExpressionType<ConstantExpr * >() ) {
354 newnode->type->array.isVarLen = false;
355 } else {
356 newnode->type->array.isVarLen = true;
357 } // if
358 return newnode->addQualifiers( qualifiers );
359} // DeclarationNode::newArray
360
361DeclarationNode * DeclarationNode::newVarArray( DeclarationNode * qualifiers ) {
362 DeclarationNode * newnode = new DeclarationNode;
363 newnode->type = new TypeData( TypeData::Array );
364 newnode->type->array.dimension = nullptr;
365 newnode->type->array.isStatic = false;
366 newnode->type->array.isVarLen = true;
367 return newnode->addQualifiers( qualifiers );
368}
369
370DeclarationNode * DeclarationNode::newBitfield( ExpressionNode * size ) {
371 DeclarationNode * newnode = new DeclarationNode;
372 newnode->bitfieldWidth = size;
373 return newnode;
374}
375
376DeclarationNode * DeclarationNode::newTuple( DeclarationNode * members ) {
377 DeclarationNode * newnode = new DeclarationNode;
378 newnode->type = new TypeData( TypeData::Tuple );
379 newnode->type->tuple = members;
380 return newnode;
381}
382
383DeclarationNode * DeclarationNode::newTypeof( ExpressionNode * expr, bool basetypeof ) {
384 DeclarationNode * newnode = new DeclarationNode;
385 newnode->type = new TypeData( basetypeof ? TypeData::Basetypeof : TypeData::Typeof );
386 newnode->type->typeexpr = expr;
387 return newnode;
388}
389
390DeclarationNode * DeclarationNode::newVtableType( DeclarationNode * decl ) {
391 DeclarationNode * newnode = new DeclarationNode;
392 newnode->type = new TypeData( TypeData::Vtable );
393 newnode->setBase( decl->type );
394 return newnode;
395}
396
397DeclarationNode * DeclarationNode::newBuiltinType( BuiltinType bt ) {
398 DeclarationNode * newnode = new DeclarationNode;
399 newnode->type = new TypeData( TypeData::Builtin );
400 newnode->builtin = bt;
401 newnode->type->builtintype = newnode->builtin;
402 return newnode;
403} // DeclarationNode::newBuiltinType
404
405DeclarationNode * DeclarationNode::newFunction( const string * name, DeclarationNode * ret, DeclarationNode * param, StatementNode * body ) {
406 DeclarationNode * newnode = newName( name );
407 newnode->type = new TypeData( TypeData::Function );
408 newnode->type->function.params = param;
409 newnode->type->function.body = body;
410
411 if ( ret ) {
412 newnode->type->base = ret->type;
413 ret->type = nullptr;
414 delete ret;
415 } // if
416
417 return newnode;
418} // DeclarationNode::newFunction
419
420DeclarationNode * DeclarationNode::newAttribute( const string * name, ExpressionNode * expr ) {
421 DeclarationNode * newnode = new DeclarationNode;
422 newnode->type = nullptr;
423 std::list< Expression * > exprs;
424 buildList( expr, exprs );
425 newnode->attributes.push_back( new Attribute( *name, exprs ) );
426 delete name;
427 return newnode;
428}
429
430DeclarationNode * DeclarationNode::newDirectiveStmt( StatementNode * stmt ) {
431 DeclarationNode * newnode = new DeclarationNode;
432 newnode->directiveStmt = stmt;
433 return newnode;
434}
435
436DeclarationNode * DeclarationNode::newAsmStmt( StatementNode * stmt ) {
437 DeclarationNode * newnode = new DeclarationNode;
438 newnode->asmStmt = stmt;
439 return newnode;
440}
441
442DeclarationNode * DeclarationNode::newStaticAssert( ExpressionNode * condition, Expression * message ) {
443 DeclarationNode * newnode = new DeclarationNode;
444 newnode->assert.condition = condition;
445 newnode->assert.message = message;
446 return newnode;
447}
448
449
450void appendError( string & dst, const string & src ) {
451 if ( src.empty() ) return;
452 if ( dst.empty() ) { dst = src; return; }
453 dst += ", " + src;
454} // appendError
455
456void DeclarationNode::checkQualifiers( const TypeData * src, const TypeData * dst ) {
457 const Type::Qualifiers qsrc = src->qualifiers, qdst = dst->qualifiers; // optimization
458
459 if ( (qsrc & qdst).any() ) { // duplicates ?
460 for ( unsigned int i = 0; i < Type::NumTypeQualifier; i += 1 ) { // find duplicates
461 if ( qsrc[i] && qdst[i] ) {
462 appendError( error, string( "duplicate " ) + Type::QualifiersNames[i] );
463 } // if
464 } // for
465 } // for
466} // DeclarationNode::checkQualifiers
467
468void DeclarationNode::checkSpecifiers( DeclarationNode * src ) {
469 if ( (funcSpecs & src->funcSpecs).any() ) { // duplicates ?
470 for ( unsigned int i = 0; i < Type::NumFuncSpecifier; i += 1 ) { // find duplicates
471 if ( funcSpecs[i] && src->funcSpecs[i] ) {
472 appendError( error, string( "duplicate " ) + Type::FuncSpecifiersNames[i] );
473 } // if
474 } // for
475 } // if
476
477 if ( storageClasses.any() && src->storageClasses.any() ) { // any reason to check ?
478 if ( (storageClasses & src->storageClasses ).any() ) { // duplicates ?
479 for ( unsigned int i = 0; i < Type::NumStorageClass; i += 1 ) { // find duplicates
480 if ( storageClasses[i] && src->storageClasses[i] ) {
481 appendError( error, string( "duplicate " ) + Type::StorageClassesNames[i] );
482 } // if
483 } // for
484 // src is the new item being added and has a single bit
485 } else if ( ! src->storageClasses.is_threadlocal ) { // conflict ?
486 appendError( error, string( "conflicting " ) + Type::StorageClassesNames[storageClasses.ffs()] +
487 " & " + Type::StorageClassesNames[src->storageClasses.ffs()] );
488 src->storageClasses.reset(); // FIX to preserve invariant of one basic storage specifier
489 } // if
490 } // if
491
492 appendError( error, src->error );
493} // DeclarationNode::checkSpecifiers
494
495DeclarationNode * DeclarationNode::copySpecifiers( DeclarationNode * q ) {
496 funcSpecs |= q->funcSpecs;
497 storageClasses |= q->storageClasses;
498
499 for ( Attribute *attr: reverseIterate( q->attributes ) ) {
500 attributes.push_front( attr->clone() );
501 } // for
502 return this;
503} // DeclarationNode::copySpecifiers
504
505static void addQualifiersToType( TypeData *& src, TypeData * dst ) {
506 if ( dst->base ) {
507 addQualifiersToType( src, dst->base );
508 } else if ( dst->kind == TypeData::Function ) {
509 dst->base = src;
510 src = nullptr;
511 } else {
512 dst->qualifiers |= src->qualifiers;
513 } // if
514} // addQualifiersToType
515
516DeclarationNode * DeclarationNode::addQualifiers( DeclarationNode * q ) {
517 if ( ! q ) { return this; } // empty qualifier
518
519 checkSpecifiers( q );
520 copySpecifiers( q );
521
522 if ( ! q->type ) { delete q; return this; }
523
524 if ( ! type ) {
525 type = q->type; // reuse structure
526 q->type = nullptr;
527 delete q;
528 return this;
529 } // if
530
531 if ( q->type->forall ) { // forall qualifier ?
532 if ( type->forall ) { // polymorphic routine ?
533 type->forall->appendList( q->type->forall ); // augment forall qualifier
534 } else {
535 if ( type->kind == TypeData::Aggregate ) { // struct/union ?
536 if ( type->aggregate.params ) { // polymorphic ?
537 type->aggregate.params->appendList( q->type->forall ); // augment forall qualifier
538 } else { // not polymorphic
539 type->aggregate.params = q->type->forall; // set forall qualifier
540 } // if
541 } else { // not polymorphic
542 type->forall = q->type->forall; // make polymorphic routine
543 } // if
544 } // if
545 q->type->forall = nullptr; // forall qualifier moved
546 } // if
547
548 checkQualifiers( type, q->type );
549 if ( (builtin == Zero || builtin == One) && q->type->qualifiers.val != 0 && error.length() == 0 ) {
550 SemanticWarning( yylloc, Warning::BadQualifiersZeroOne, Type::QualifiersNames[ilog2( q->type->qualifiers.val )], builtinTypeNames[builtin] );
551 } // if
552 addQualifiersToType( q->type, type );
553
554 delete q;
555 return this;
556} // addQualifiers
557
558static void addTypeToType( TypeData *& src, TypeData *& dst ) {
559 if ( src->forall && dst->kind == TypeData::Function ) {
560 if ( dst->forall ) {
561 dst->forall->appendList( src->forall );
562 } else {
563 dst->forall = src->forall;
564 } // if
565 src->forall = nullptr;
566 } // if
567 if ( dst->base ) {
568 addTypeToType( src, dst->base );
569 } else {
570 switch ( dst->kind ) {
571 case TypeData::Unknown:
572 src->qualifiers |= dst->qualifiers;
573 dst = src;
574 src = nullptr;
575 break;
576 case TypeData::Basic:
577 dst->qualifiers |= src->qualifiers;
578 if ( src->kind != TypeData::Unknown ) {
579 assert( src->kind == TypeData::Basic );
580
581 if ( dst->basictype == DeclarationNode::NoBasicType ) {
582 dst->basictype = src->basictype;
583 } else if ( src->basictype != DeclarationNode::NoBasicType )
584 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::basicTypeNames[ src->basictype ] + " in type: " );
585
586 if ( dst->complextype == DeclarationNode::NoComplexType ) {
587 dst->complextype = src->complextype;
588 } else if ( src->complextype != DeclarationNode::NoComplexType )
589 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::complexTypeNames[ src->complextype ] + " in type: " );
590
591 if ( dst->signedness == DeclarationNode::NoSignedness ) {
592 dst->signedness = src->signedness;
593 } else if ( src->signedness != DeclarationNode::NoSignedness )
594 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::signednessNames[ src->signedness ] + " in type: " );
595
596 if ( dst->length == DeclarationNode::NoLength ) {
597 dst->length = src->length;
598 } else if ( dst->length == DeclarationNode::Long && src->length == DeclarationNode::Long ) {
599 dst->length = DeclarationNode::LongLong;
600 } else if ( src->length != DeclarationNode::NoLength )
601 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::lengthNames[ src->length ] + " in type: " );
602 } // if
603 break;
604 default:
605 switch ( src->kind ) {
606 case TypeData::Aggregate:
607 case TypeData::Enum:
608 dst->base = new TypeData( TypeData::AggregateInst );
609 dst->base->aggInst.aggregate = src;
610 if ( src->kind == TypeData::Aggregate ) {
611 dst->base->aggInst.params = maybeClone( src->aggregate.actuals );
612 } // if
613 dst->base->qualifiers |= src->qualifiers;
614 src = nullptr;
615 break;
616 default:
617 if ( dst->forall ) {
618 dst->forall->appendList( src->forall );
619 } else {
620 dst->forall = src->forall;
621 } // if
622 src->forall = nullptr;
623 dst->base = src;
624 src = nullptr;
625 } // switch
626 } // switch
627 } // if
628}
629
630DeclarationNode * DeclarationNode::addType( DeclarationNode * o ) {
631 if ( o ) {
632 checkSpecifiers( o );
633 copySpecifiers( o );
634 if ( o->type ) {
635 if ( ! type ) {
636 if ( o->type->kind == TypeData::Aggregate || o->type->kind == TypeData::Enum ) {
637 type = new TypeData( TypeData::AggregateInst );
638 type->aggInst.aggregate = o->type;
639 if ( o->type->kind == TypeData::Aggregate ) {
640 type->aggInst.hoistType = o->type->aggregate.body;
641 type->aggInst.params = maybeClone( o->type->aggregate.actuals );
642 } else {
643 type->aggInst.hoistType = o->type->enumeration.body;
644 } // if
645 type->qualifiers |= o->type->qualifiers;
646 } else {
647 type = o->type;
648 } // if
649 o->type = nullptr;
650 } else {
651 addTypeToType( o->type, type );
652 } // if
653 } // if
654 if ( o->bitfieldWidth ) {
655 bitfieldWidth = o->bitfieldWidth;
656 } // if
657
658 // there may be typedefs chained onto the type
659 if ( o->get_next() ) {
660 set_last( o->get_next()->clone() );
661 } // if
662 } // if
663 delete o;
664 return this;
665}
666
667DeclarationNode * DeclarationNode::addTypedef() {
668 TypeData * newtype = new TypeData( TypeData::Symbolic );
669 newtype->symbolic.params = nullptr;
670 newtype->symbolic.isTypedef = true;
671 newtype->symbolic.name = name ? new string( *name ) : nullptr;
672 newtype->base = type;
673 type = newtype;
674 return this;
675}
676
677DeclarationNode * DeclarationNode::addAssertions( DeclarationNode * assertions ) {
678 if ( variable.tyClass != TypeDecl::NUMBER_OF_KINDS ) {
679 if ( variable.assertions ) {
680 variable.assertions->appendList( assertions );
681 } else {
682 variable.assertions = assertions;
683 } // if
684 return this;
685 } // if
686
687 assert( type );
688 switch ( type->kind ) {
689 case TypeData::Symbolic:
690 if ( type->symbolic.assertions ) {
691 type->symbolic.assertions->appendList( assertions );
692 } else {
693 type->symbolic.assertions = assertions;
694 } // if
695 break;
696 default:
697 assert( false );
698 } // switch
699
700 return this;
701}
702
703DeclarationNode * DeclarationNode::addName( string * newname ) {
704 assert( ! name );
705 name = newname;
706 return this;
707}
708
709DeclarationNode * DeclarationNode::addAsmName( DeclarationNode * newname ) {
710 assert( ! asmName );
711 asmName = newname ? newname->asmName : nullptr;
712 return this->addQualifiers( newname );
713}
714
715DeclarationNode * DeclarationNode::addBitfield( ExpressionNode * size ) {
716 bitfieldWidth = size;
717 return this;
718}
719
720DeclarationNode * DeclarationNode::addVarArgs() {
721 assert( type );
722 hasEllipsis = true;
723 return this;
724}
725
726DeclarationNode * DeclarationNode::addFunctionBody( StatementNode * body, ExpressionNode * withExprs ) {
727 assert( type );
728 assert( type->kind == TypeData::Function );
729 assert( ! type->function.body );
730 type->function.body = body;
731 type->function.withExprs = withExprs;
732 return this;
733}
734
735DeclarationNode * DeclarationNode::addOldDeclList( DeclarationNode * list ) {
736 assert( type );
737 assert( type->kind == TypeData::Function );
738 assert( ! type->function.oldDeclList );
739 type->function.oldDeclList = list;
740 return this;
741}
742
743DeclarationNode * DeclarationNode::setBase( TypeData * newType ) {
744 if ( type ) {
745 TypeData * prevBase = type;
746 TypeData * curBase = type->base;
747 while ( curBase != nullptr ) {
748 prevBase = curBase;
749 curBase = curBase->base;
750 } // while
751 prevBase->base = newType;
752 } else {
753 type = newType;
754 } // if
755 return this;
756}
757
758DeclarationNode * DeclarationNode::copyAttribute( DeclarationNode * a ) {
759 if ( a ) {
760 for ( Attribute *attr: reverseIterate( a->attributes ) ) {
761 attributes.push_front( attr );
762 } // for
763 a->attributes.clear();
764 } // if
765 return this;
766} // copyAttribute
767
768DeclarationNode * DeclarationNode::addPointer( DeclarationNode * p ) {
769 if ( p ) {
770 assert( p->type->kind == TypeData::Pointer || p->type->kind == TypeData::Reference );
771 setBase( p->type );
772 p->type = nullptr;
773 copyAttribute( p );
774 delete p;
775 } // if
776 return this;
777}
778
779DeclarationNode * DeclarationNode::addArray( DeclarationNode * a ) {
780 if ( a ) {
781 assert( a->type->kind == TypeData::Array );
782 setBase( a->type );
783 a->type = nullptr;
784 copyAttribute( a );
785 delete a;
786 } // if
787 return this;
788}
789
790DeclarationNode * DeclarationNode::addNewPointer( DeclarationNode * p ) {
791 if ( p ) {
792 assert( p->type->kind == TypeData::Pointer || p->type->kind == TypeData::Reference );
793 if ( type ) {
794 switch ( type->kind ) {
795 case TypeData::Aggregate:
796 case TypeData::Enum:
797 p->type->base = new TypeData( TypeData::AggregateInst );
798 p->type->base->aggInst.aggregate = type;
799 if ( type->kind == TypeData::Aggregate ) {
800 p->type->base->aggInst.params = maybeClone( type->aggregate.actuals );
801 } // if
802 p->type->base->qualifiers |= type->qualifiers;
803 break;
804
805 default:
806 p->type->base = type;
807 } // switch
808 type = nullptr;
809 } // if
810 delete this;
811 return p;
812 } else {
813 return this;
814 } // if
815}
816
817static TypeData * findLast( TypeData * a ) {
818 assert( a );
819 TypeData * cur = a;
820 while ( cur->base ) {
821 cur = cur->base;
822 } // while
823 return cur;
824}
825
826DeclarationNode * DeclarationNode::addNewArray( DeclarationNode * a ) {
827 if ( ! a ) return this;
828 assert( a->type->kind == TypeData::Array );
829 TypeData * lastArray = findLast( a->type );
830 if ( type ) {
831 switch ( type->kind ) {
832 case TypeData::Aggregate:
833 case TypeData::Enum:
834 lastArray->base = new TypeData( TypeData::AggregateInst );
835 lastArray->base->aggInst.aggregate = type;
836 if ( type->kind == TypeData::Aggregate ) {
837 lastArray->base->aggInst.params = maybeClone( type->aggregate.actuals );
838 } // if
839 lastArray->base->qualifiers |= type->qualifiers;
840 break;
841 default:
842 lastArray->base = type;
843 } // switch
844 type = nullptr;
845 } // if
846 delete this;
847 return a;
848}
849
850DeclarationNode * DeclarationNode::addParamList( DeclarationNode * params ) {
851 TypeData * ftype = new TypeData( TypeData::Function );
852 ftype->function.params = params;
853 setBase( ftype );
854 return this;
855}
856
857static TypeData * addIdListToType( TypeData * type, DeclarationNode * ids ) {
858 if ( type ) {
859 if ( type->kind != TypeData::Function ) {
860 type->base = addIdListToType( type->base, ids );
861 } else {
862 type->function.idList = ids;
863 } // if
864 return type;
865 } else {
866 TypeData * newtype = new TypeData( TypeData::Function );
867 newtype->function.idList = ids;
868 return newtype;
869 } // if
870} // addIdListToType
871
872DeclarationNode * DeclarationNode::addIdList( DeclarationNode * ids ) {
873 type = addIdListToType( type, ids );
874 return this;
875}
876
877DeclarationNode * DeclarationNode::addInitializer( InitializerNode * init ) {
878 initializer = init;
879 return this;
880}
881
882DeclarationNode * DeclarationNode::addTypeInitializer( DeclarationNode * init ) {
883 assertf( variable.tyClass != TypeDecl::NUMBER_OF_KINDS, "Called addTypeInitializer on something that isn't a type variable." );
884 variable.initializer = init;
885 return this;
886}
887
888DeclarationNode * DeclarationNode::cloneType( string * name ) {
889 DeclarationNode * newnode = newName( name );
890 newnode->type = maybeClone( type );
891 newnode->copySpecifiers( this );
892 return newnode;
893}
894
895DeclarationNode * DeclarationNode::cloneBaseType( DeclarationNode * o ) {
896 if ( ! o ) return nullptr;
897
898 o->copySpecifiers( this );
899 if ( type ) {
900 TypeData * srcType = type;
901
902 // search for the base type by scanning off pointers and array designators
903 while ( srcType->base ) {
904 srcType = srcType->base;
905 } // while
906
907 TypeData * newType = srcType->clone();
908 if ( newType->kind == TypeData::AggregateInst ) {
909 // don't duplicate members
910 if ( newType->aggInst.aggregate->kind == TypeData::Enum ) {
911 delete newType->aggInst.aggregate->enumeration.constants;
912 newType->aggInst.aggregate->enumeration.constants = nullptr;
913 newType->aggInst.aggregate->enumeration.body = false;
914 } else {
915 assert( newType->aggInst.aggregate->kind == TypeData::Aggregate );
916 delete newType->aggInst.aggregate->aggregate.fields;
917 newType->aggInst.aggregate->aggregate.fields = nullptr;
918 newType->aggInst.aggregate->aggregate.body = false;
919 } // if
920 // don't hoist twice
921 newType->aggInst.hoistType = false;
922 } // if
923
924 newType->forall = maybeClone( type->forall );
925 if ( ! o->type ) {
926 o->type = newType;
927 } else {
928 addTypeToType( newType, o->type );
929 delete newType;
930 } // if
931 } // if
932 return o;
933}
934
935DeclarationNode * DeclarationNode::extractAggregate() const {
936 if ( type ) {
937 TypeData * ret = typeextractAggregate( type );
938 if ( ret ) {
939 DeclarationNode * newnode = new DeclarationNode;
940 newnode->type = ret;
941 return newnode;
942 } // if
943 } // if
944 return nullptr;
945}
946
947void buildList( const DeclarationNode * firstNode, std::list< Declaration * > & outputList ) {
948 SemanticErrorException errors;
949 std::back_insert_iterator< std::list< Declaration * > > out( outputList );
950
951 for ( const DeclarationNode * cur = firstNode; cur; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
952 try {
953 bool extracted = false;
954 bool anon = false;
955 if ( DeclarationNode * extr = cur->extractAggregate() ) {
956 // handle the case where a structure declaration is contained within an object or type declaration
957 Declaration * decl = extr->build();
958 if ( decl ) {
959 // hoist the structure declaration
960 decl->location = cur->location;
961 * out++ = decl;
962
963 // need to remember the cases where a declaration contains an anonymous aggregate definition
964 extracted = true;
965 assert( extr->type );
966 if ( extr->type->kind == TypeData::Aggregate ) {
967 anon = extr->type->aggregate.anon;
968 } else if ( extr->type->kind == TypeData::Enum ) {
969 // xxx - is it useful to have an implicit anonymous enum member?
970 anon = extr->type->enumeration.anon;
971 }
972 } // if
973 delete extr;
974 } // if
975
976 Declaration * decl = cur->build();
977 if ( decl ) {
978 // don't include anonymous declaration for named aggregates, but do include them for anonymous aggregates, e.g.:
979 // struct S {
980 // struct T { int x; }; // no anonymous member
981 // struct { int y; }; // anonymous member
982 // struct T; // anonymous member
983 // };
984 if ( ! (extracted && decl->name == "" && ! anon && ! cur->get_inLine()) ) {
985 if ( decl->name == "" ) {
986 if ( DeclarationWithType * dwt = dynamic_cast<DeclarationWithType *>( decl ) ) {
987 if ( ReferenceToType * aggr = dynamic_cast<ReferenceToType *>( dwt->get_type() ) ) {
988 if ( aggr->name.find("anonymous") == std::string::npos ) {
989 if ( ! cur->get_inLine() ) {
990 // temporary: warn about anonymous member declarations of named types, since
991 // this conflicts with the syntax for the forward declaration of an anonymous type
992 SemanticWarning( cur->location, Warning::AggrForwardDecl, aggr->name.c_str() );
993 } // if
994 } // if
995 } // if
996 } // if
997 } // if
998 decl->location = cur->location;
999 *out++ = decl;
1000 } // if
1001 } // if
1002 } catch( SemanticErrorException & e ) {
1003 errors.append( e );
1004 } // try
1005 } // for
1006
1007 if ( ! errors.isEmpty() ) {
1008 throw errors;
1009 } // if
1010} // buildList
1011
1012// currently only builds assertions, function parameters, and return values
1013void buildList( const DeclarationNode * firstNode, std::list< DeclarationWithType * > & outputList ) {
1014 SemanticErrorException errors;
1015 std::back_insert_iterator< std::list< DeclarationWithType * > > out( outputList );
1016
1017 for ( const DeclarationNode * cur = firstNode; cur; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
1018 try {
1019 Declaration * decl = cur->build();
1020 assert( decl );
1021 if ( DeclarationWithType * dwt = dynamic_cast< DeclarationWithType * >( decl ) ) {
1022 dwt->location = cur->location;
1023 *out++ = dwt;
1024 } else if ( StructDecl * agg = dynamic_cast< StructDecl * >( decl ) ) {
1025 // e.g., int foo(struct S) {}
1026 StructInstType * inst = new StructInstType( Type::Qualifiers(), agg->name );
1027 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
1028 obj->location = cur->location;
1029 *out++ = obj;
1030 delete agg;
1031 } else if ( UnionDecl * agg = dynamic_cast< UnionDecl * >( decl ) ) {
1032 // e.g., int foo(union U) {}
1033 UnionInstType * inst = new UnionInstType( Type::Qualifiers(), agg->name );
1034 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
1035 obj->location = cur->location;
1036 *out++ = obj;
1037 } else if ( EnumDecl * agg = dynamic_cast< EnumDecl * >( decl ) ) {
1038 // e.g., int foo(enum E) {}
1039 EnumInstType * inst = new EnumInstType( Type::Qualifiers(), agg->name );
1040 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
1041 obj->location = cur->location;
1042 *out++ = obj;
1043 } // if
1044 } catch( SemanticErrorException & e ) {
1045 errors.append( e );
1046 } // try
1047 } // for
1048
1049 if ( ! errors.isEmpty() ) {
1050 throw errors;
1051 } // if
1052} // buildList
1053
1054void buildTypeList( const DeclarationNode * firstNode, std::list< Type * > & outputList ) {
1055 SemanticErrorException errors;
1056 std::back_insert_iterator< std::list< Type * > > out( outputList );
1057 const DeclarationNode * cur = firstNode;
1058
1059 while ( cur ) {
1060 try {
1061 * out++ = cur->buildType();
1062 } catch( SemanticErrorException & e ) {
1063 errors.append( e );
1064 } // try
1065 cur = dynamic_cast< DeclarationNode * >( cur->get_next() );
1066 } // while
1067
1068 if ( ! errors.isEmpty() ) {
1069 throw errors;
1070 } // if
1071} // buildTypeList
1072
1073Declaration * DeclarationNode::build() const {
1074 if ( ! error.empty() ) SemanticError( this, error + " in declaration of " );
1075
1076 if ( asmStmt ) {
1077 return new AsmDecl( strict_dynamic_cast<AsmStmt *>( asmStmt->build() ) );
1078 } // if
1079 if ( directiveStmt ) {
1080 return new DirectiveDecl( strict_dynamic_cast<DirectiveStmt *>( directiveStmt->build() ) );
1081 } // if
1082
1083 if ( variable.tyClass != TypeDecl::NUMBER_OF_KINDS ) {
1084 // otype is internally converted to dtype + otype parameters
1085 static const TypeDecl::Kind kindMap[] = { TypeDecl::Dtype, TypeDecl::Dtype, TypeDecl::Dtype, TypeDecl::Ftype, TypeDecl::Ttype, TypeDecl::Dimension };
1086 static_assert( sizeof(kindMap) / sizeof(kindMap[0]) == TypeDecl::NUMBER_OF_KINDS, "DeclarationNode::build: kindMap is out of sync." );
1087 assertf( variable.tyClass < sizeof(kindMap)/sizeof(kindMap[0]), "Variable's tyClass is out of bounds." );
1088 TypeDecl * ret = new TypeDecl( *name, Type::StorageClasses(), nullptr, kindMap[ variable.tyClass ], variable.tyClass == TypeDecl::Otype || variable.tyClass == TypeDecl::DStype, variable.initializer ? variable.initializer->buildType() : nullptr );
1089 buildList( variable.assertions, ret->get_assertions() );
1090 return ret;
1091 } // if
1092
1093 if ( type ) {
1094 // Function specifiers can only appear on a function definition/declaration.
1095 //
1096 // inline _Noreturn int f(); // allowed
1097 // inline _Noreturn int g( int i ); // allowed
1098 // inline _Noreturn int i; // disallowed
1099 if ( type->kind != TypeData::Function && funcSpecs.any() ) {
1100 SemanticError( this, "invalid function specifier for " );
1101 } // if
1102 // Forall qualifier can only appear on a function/aggregate definition/declaration.
1103 //
1104 // forall int f(); // allowed
1105 // forall int g( int i ); // allowed
1106 // forall int i; // disallowed
1107 if ( type->kind != TypeData::Function && type->forall ) {
1108 SemanticError( this, "invalid type qualifier for " );
1109 } // if
1110 bool isDelete = initializer && initializer->get_isDelete();
1111 Declaration * decl = buildDecl( type, name ? *name : string( "" ), storageClasses, maybeBuild< Expression >( bitfieldWidth ), funcSpecs, linkage, asmName, isDelete ? nullptr : maybeBuild< Initializer >(initializer), attributes )->set_extension( extension );
1112 if ( isDelete ) {
1113 DeclarationWithType * dwt = strict_dynamic_cast<DeclarationWithType *>( decl );
1114 dwt->isDeleted = true;
1115 }
1116 return decl;
1117 } // if
1118
1119 if ( assert.condition ) {
1120 return new StaticAssertDecl( maybeBuild< Expression >( assert.condition ), strict_dynamic_cast< ConstantExpr * >( maybeClone( assert.message ) ) );
1121 }
1122
1123 // SUE's cannot have function specifiers, either
1124 //
1125 // inline _Noreturn struct S { ... }; // disallowed
1126 // inline _Noreturn enum E { ... }; // disallowed
1127 if ( funcSpecs.any() ) {
1128 SemanticError( this, "invalid function specifier for " );
1129 } // if
1130 assertf( name, "ObjectDecl must a have name\n" );
1131 return (new ObjectDecl( *name, storageClasses, linkage, maybeBuild< Expression >( bitfieldWidth ), nullptr, maybeBuild< Initializer >( initializer ) ))->set_asmName( asmName )->set_extension( extension );
1132}
1133
1134Type * DeclarationNode::buildType() const {
1135 assert( type );
1136
1137 if ( attr.expr ) {
1138 return new AttrType( buildQualifiers( type ), *name, attr.expr->build(), attributes );
1139 } else if ( attr.type ) {
1140 return new AttrType( buildQualifiers( type ), *name, attr.type->buildType(), attributes );
1141 } // if
1142
1143 switch ( type->kind ) {
1144 case TypeData::Enum:
1145 case TypeData::Aggregate: {
1146 ReferenceToType * ret = buildComAggInst( type, attributes, linkage );
1147 buildList( type->aggregate.actuals, ret->get_parameters() );
1148 return ret;
1149 }
1150 case TypeData::Symbolic: {
1151 TypeInstType * ret = new TypeInstType( buildQualifiers( type ), *type->symbolic.name, false, attributes );
1152 buildList( type->symbolic.actuals, ret->get_parameters() );
1153 return ret;
1154 }
1155 default:
1156 Type * simpletypes = typebuild( type );
1157 simpletypes->get_attributes() = attributes; // copy because member is const
1158 return simpletypes;
1159 } // switch
1160}
1161
1162// Local Variables: //
1163// tab-width: 4 //
1164// mode: c++ //
1165// compile-command: "make install" //
1166// End: //
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