source: src/Parser/DeclarationNode.cc@ 4468a70

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 4468a70 was 3ca7ef3, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago

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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 : Thu Oct 8 08:03:38 2020
13// Update Count : 1135
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::newFunction( const string * name, DeclarationNode * ret, DeclarationNode * param, StatementNode * body ) {
170 DeclarationNode * newnode = new DeclarationNode;
171 newnode->name = name;
172 newnode->type = new TypeData( TypeData::Function );
173 newnode->type->function.params = param;
174 newnode->type->function.body = body;
175
176 if ( ret ) {
177 newnode->type->base = ret->type;
178 ret->type = nullptr;
179 delete ret;
180 } // if
181
182 return newnode;
183} // DeclarationNode::newFunction
184
185
186DeclarationNode * DeclarationNode::newStorageClass( Type::StorageClasses sc ) {
187 DeclarationNode * newnode = new DeclarationNode;
188 newnode->storageClasses = sc;
189 return newnode;
190} // DeclarationNode::newStorageClass
191
192DeclarationNode * DeclarationNode::newFuncSpecifier( Type::FuncSpecifiers fs ) {
193 DeclarationNode * newnode = new DeclarationNode;
194 newnode->funcSpecs = fs;
195 return newnode;
196} // DeclarationNode::newFuncSpecifier
197
198DeclarationNode * DeclarationNode::newTypeQualifier( Type::Qualifiers tq ) {
199 DeclarationNode * newnode = new DeclarationNode;
200 newnode->type = new TypeData();
201 newnode->type->qualifiers = tq;
202 return newnode;
203} // DeclarationNode::newQualifier
204
205DeclarationNode * DeclarationNode::newBasicType( BasicType bt ) {
206 DeclarationNode * newnode = new DeclarationNode;
207 newnode->type = new TypeData( TypeData::Basic );
208 newnode->type->basictype = bt;
209 return newnode;
210} // DeclarationNode::newBasicType
211
212DeclarationNode * DeclarationNode::newComplexType( ComplexType ct ) {
213 DeclarationNode * newnode = new DeclarationNode;
214 newnode->type = new TypeData( TypeData::Basic );
215 newnode->type->complextype = ct;
216 return newnode;
217} // DeclarationNode::newComplexType
218
219DeclarationNode * DeclarationNode::newSignedNess( Signedness sn ) {
220 DeclarationNode * newnode = new DeclarationNode;
221 newnode->type = new TypeData( TypeData::Basic );
222 newnode->type->signedness = sn;
223 return newnode;
224} // DeclarationNode::newSignedNess
225
226DeclarationNode * DeclarationNode::newLength( Length lnth ) {
227 DeclarationNode * newnode = new DeclarationNode;
228 newnode->type = new TypeData( TypeData::Basic );
229 newnode->type->length = lnth;
230 return newnode;
231} // DeclarationNode::newLength
232
233DeclarationNode * DeclarationNode::newForall( DeclarationNode * forall ) {
234 DeclarationNode * newnode = new DeclarationNode;
235 newnode->type = new TypeData( TypeData::Unknown );
236 newnode->type->forall = forall;
237 return newnode;
238} // DeclarationNode::newForall
239
240DeclarationNode * DeclarationNode::newFromTypedef( const string * name ) {
241 DeclarationNode * newnode = new DeclarationNode;
242 newnode->type = new TypeData( TypeData::SymbolicInst );
243 newnode->type->symbolic.name = name;
244 newnode->type->symbolic.isTypedef = true;
245 newnode->type->symbolic.params = nullptr;
246 return newnode;
247} // DeclarationNode::newFromTypedef
248
249DeclarationNode * DeclarationNode::newFromGlobalScope() {
250 DeclarationNode * newnode = new DeclarationNode;
251 newnode->type = new TypeData( TypeData::GlobalScope );
252 return newnode;
253}
254
255DeclarationNode * DeclarationNode::newQualifiedType( DeclarationNode * parent, DeclarationNode * child) {
256 DeclarationNode * newnode = new DeclarationNode;
257 newnode->type = new TypeData( TypeData::Qualified );
258 newnode->type->qualified.parent = parent->type;
259 newnode->type->qualified.child = child->type;
260 parent->type = nullptr;
261 child->type = nullptr;
262 delete parent;
263 delete child;
264 return newnode;
265}
266
267DeclarationNode * DeclarationNode::newAggregate( AggregateDecl::Aggregate kind, const string * name, ExpressionNode * actuals, DeclarationNode * fields, bool body ) {
268 DeclarationNode * newnode = new DeclarationNode;
269 newnode->type = new TypeData( TypeData::Aggregate );
270 newnode->type->aggregate.kind = kind;
271 newnode->type->aggregate.name = name == nullptr ? new string( DeclarationNode::anonymous.newName() ) : name;
272 newnode->type->aggregate.actuals = actuals;
273 newnode->type->aggregate.fields = fields;
274 newnode->type->aggregate.body = body;
275 newnode->type->aggregate.tagged = false;
276 newnode->type->aggregate.parent = nullptr;
277 newnode->type->aggregate.anon = name == nullptr;
278 return newnode;
279} // DeclarationNode::newAggregate
280
281DeclarationNode * DeclarationNode::newEnum( const string * name, DeclarationNode * constants, bool body ) {
282 DeclarationNode * newnode = new DeclarationNode;
283 newnode->type = new TypeData( TypeData::Enum );
284 newnode->type->enumeration.name = name == nullptr ? new string( DeclarationNode::anonymous.newName() ) : name;
285 newnode->type->enumeration.constants = constants;
286 newnode->type->enumeration.body = body;
287 newnode->type->enumeration.anon = name == nullptr;
288 return newnode;
289} // DeclarationNode::newEnum
290
291DeclarationNode * DeclarationNode::newEnumConstant( const string * name, ExpressionNode * constant ) {
292 DeclarationNode * newnode = new DeclarationNode;
293 newnode->name = name;
294 newnode->enumeratorValue.reset( constant );
295 return newnode;
296} // DeclarationNode::newEnumConstant
297
298DeclarationNode * DeclarationNode::newName( const string * name ) {
299 DeclarationNode * newnode = new DeclarationNode;
300 newnode->name = name;
301 return newnode;
302} // DeclarationNode::newName
303
304DeclarationNode * DeclarationNode::newFromTypeGen( const string * name, ExpressionNode * params ) {
305 DeclarationNode * newnode = new DeclarationNode;
306 newnode->type = new TypeData( TypeData::SymbolicInst );
307 newnode->type->symbolic.name = name;
308 newnode->type->symbolic.isTypedef = false;
309 newnode->type->symbolic.actuals = params;
310 return newnode;
311} // DeclarationNode::newFromTypeGen
312
313DeclarationNode * DeclarationNode::newTypeParam( TypeDecl::Kind tc, const string * name ) {
314 DeclarationNode * newnode = new DeclarationNode;
315 newnode->type = nullptr;
316 assert( ! newnode->name );
317// newnode->variable.name = name;
318 newnode->name = name;
319 newnode->variable.tyClass = tc;
320 newnode->variable.assertions = nullptr;
321 return newnode;
322} // DeclarationNode::newTypeParam
323
324DeclarationNode * DeclarationNode::newTrait( const string * name, DeclarationNode * params, DeclarationNode * asserts ) {
325 DeclarationNode * newnode = new DeclarationNode;
326 newnode->type = new TypeData( TypeData::Aggregate );
327 newnode->type->aggregate.name = name;
328 newnode->type->aggregate.kind = AggregateDecl::Trait;
329 newnode->type->aggregate.params = params;
330 newnode->type->aggregate.fields = asserts;
331 return newnode;
332} // DeclarationNode::newTrait
333
334DeclarationNode * DeclarationNode::newTraitUse( const string * name, ExpressionNode * params ) {
335 DeclarationNode * newnode = new DeclarationNode;
336 newnode->type = new TypeData( TypeData::AggregateInst );
337 newnode->type->aggInst.aggregate = new TypeData( TypeData::Aggregate );
338 newnode->type->aggInst.aggregate->aggregate.kind = AggregateDecl::Trait;
339 newnode->type->aggInst.aggregate->aggregate.name = name;
340 newnode->type->aggInst.params = params;
341 return newnode;
342} // DeclarationNode::newTraitUse
343
344DeclarationNode * DeclarationNode::newTypeDecl( const string * name, DeclarationNode * typeParams ) {
345 DeclarationNode * newnode = new DeclarationNode;
346 newnode->name = name;
347 newnode->type = new TypeData( TypeData::Symbolic );
348 newnode->type->symbolic.isTypedef = false;
349 newnode->type->symbolic.params = typeParams;
350 return newnode;
351} // DeclarationNode::newTypeDecl
352
353DeclarationNode * DeclarationNode::newPointer( DeclarationNode * qualifiers, OperKinds kind ) {
354 DeclarationNode * newnode = new DeclarationNode;
355 newnode->type = new TypeData( kind == OperKinds::PointTo ? TypeData::Pointer : TypeData::Reference );
356 if ( kind == OperKinds::And ) {
357 // T && is parsed as 'And' operator rather than two references => add a second reference type
358 TypeData * td = new TypeData( TypeData::Reference );
359 td->base = newnode->type;
360 newnode->type = td;
361 }
362 if ( qualifiers ) {
363 return newnode->addQualifiers( qualifiers );
364 } else {
365 return newnode;
366 } // if
367} // DeclarationNode::newPointer
368
369DeclarationNode * DeclarationNode::newArray( ExpressionNode * size, DeclarationNode * qualifiers, bool isStatic ) {
370 DeclarationNode * newnode = new DeclarationNode;
371 newnode->type = new TypeData( TypeData::Array );
372 newnode->type->array.dimension = size;
373 newnode->type->array.isStatic = isStatic;
374 if ( newnode->type->array.dimension == nullptr || newnode->type->array.dimension->isExpressionType<ConstantExpr * >() ) {
375 newnode->type->array.isVarLen = false;
376 } else {
377 newnode->type->array.isVarLen = true;
378 } // if
379 return newnode->addQualifiers( qualifiers );
380} // DeclarationNode::newArray
381
382DeclarationNode * DeclarationNode::newVarArray( DeclarationNode * qualifiers ) {
383 DeclarationNode * newnode = new DeclarationNode;
384 newnode->type = new TypeData( TypeData::Array );
385 newnode->type->array.dimension = nullptr;
386 newnode->type->array.isStatic = false;
387 newnode->type->array.isVarLen = true;
388 return newnode->addQualifiers( qualifiers );
389}
390
391DeclarationNode * DeclarationNode::newBitfield( ExpressionNode * size ) {
392 DeclarationNode * newnode = new DeclarationNode;
393 newnode->bitfieldWidth = size;
394 return newnode;
395}
396
397DeclarationNode * DeclarationNode::newTuple( DeclarationNode * members ) {
398 DeclarationNode * newnode = new DeclarationNode;
399 newnode->type = new TypeData( TypeData::Tuple );
400 newnode->type->tuple = members;
401 return newnode;
402}
403
404DeclarationNode * DeclarationNode::newTypeof( ExpressionNode * expr, bool basetypeof ) {
405 DeclarationNode * newnode = new DeclarationNode;
406 newnode->type = new TypeData( basetypeof ? TypeData::Basetypeof : TypeData::Typeof );
407 newnode->type->typeexpr = expr;
408 return newnode;
409}
410
411DeclarationNode * DeclarationNode::newBuiltinType( BuiltinType bt ) {
412 DeclarationNode * newnode = new DeclarationNode;
413 newnode->type = new TypeData( TypeData::Builtin );
414 newnode->builtin = bt;
415 newnode->type->builtintype = newnode->builtin;
416 return newnode;
417} // DeclarationNode::newBuiltinType
418
419DeclarationNode * DeclarationNode::newAttribute( const string * name, ExpressionNode * expr ) {
420 DeclarationNode * newnode = new DeclarationNode;
421 newnode->type = nullptr;
422 std::list< Expression * > exprs;
423 buildList( expr, exprs );
424 newnode->attributes.push_back( new Attribute( *name, exprs ) );
425 delete name;
426 return newnode;
427}
428
429DeclarationNode * DeclarationNode::newAsmStmt( StatementNode * stmt ) {
430 DeclarationNode * newnode = new DeclarationNode;
431 newnode->asmStmt = stmt;
432 return newnode;
433}
434
435DeclarationNode * DeclarationNode::newStaticAssert( ExpressionNode * condition, Expression * message ) {
436 DeclarationNode * newnode = new DeclarationNode;
437 newnode->assert.condition = condition;
438 newnode->assert.message = message;
439 return newnode;
440}
441
442
443void appendError( string & dst, const string & src ) {
444 if ( src.empty() ) return;
445 if ( dst.empty() ) { dst = src; return; }
446 dst += ", " + src;
447} // appendError
448
449void DeclarationNode::checkQualifiers( const TypeData * src, const TypeData * dst ) {
450 const Type::Qualifiers qsrc = src->qualifiers, qdst = dst->qualifiers; // optimization
451
452 if ( (qsrc & qdst).any() ) { // duplicates ?
453 for ( unsigned int i = 0; i < Type::NumTypeQualifier; i += 1 ) { // find duplicates
454 if ( qsrc[i] && qdst[i] ) {
455 appendError( error, string( "duplicate " ) + Type::QualifiersNames[i] );
456 } // if
457 } // for
458 } // for
459} // DeclarationNode::checkQualifiers
460
461void DeclarationNode::checkSpecifiers( DeclarationNode * src ) {
462 if ( (funcSpecs & src->funcSpecs).any() ) { // duplicates ?
463 for ( unsigned int i = 0; i < Type::NumFuncSpecifier; i += 1 ) { // find duplicates
464 if ( funcSpecs[i] && src->funcSpecs[i] ) {
465 appendError( error, string( "duplicate " ) + Type::FuncSpecifiersNames[i] );
466 } // if
467 } // for
468 } // if
469
470 if ( storageClasses.any() && src->storageClasses.any() ) { // any reason to check ?
471 if ( (storageClasses & src->storageClasses ).any() ) { // duplicates ?
472 for ( unsigned int i = 0; i < Type::NumStorageClass; i += 1 ) { // find duplicates
473 if ( storageClasses[i] && src->storageClasses[i] ) {
474 appendError( error, string( "duplicate " ) + Type::StorageClassesNames[i] );
475 } // if
476 } // for
477 // src is the new item being added and has a single bit
478 } else if ( ! src->storageClasses.is_threadlocal ) { // conflict ?
479 appendError( error, string( "conflicting " ) + Type::StorageClassesNames[storageClasses.ffs()] +
480 " & " + Type::StorageClassesNames[src->storageClasses.ffs()] );
481 src->storageClasses.reset(); // FIX to preserve invariant of one basic storage specifier
482 } // if
483 } // if
484
485 appendError( error, src->error );
486} // DeclarationNode::checkSpecifiers
487
488DeclarationNode * DeclarationNode::copySpecifiers( DeclarationNode * q ) {
489 funcSpecs |= q->funcSpecs;
490 storageClasses |= q->storageClasses;
491
492 for ( Attribute *attr: reverseIterate( q->attributes ) ) {
493 attributes.push_front( attr->clone() );
494 } // for
495 return this;
496} // DeclarationNode::copySpecifiers
497
498static void addQualifiersToType( TypeData *& src, TypeData * dst ) {
499 if ( dst->base ) {
500 addQualifiersToType( src, dst->base );
501 } else if ( dst->kind == TypeData::Function ) {
502 dst->base = src;
503 src = nullptr;
504 } else {
505 dst->qualifiers |= src->qualifiers;
506 } // if
507} // addQualifiersToType
508
509DeclarationNode * DeclarationNode::addQualifiers( DeclarationNode * q ) {
510 if ( ! q ) { return this; } // empty qualifier
511
512 checkSpecifiers( q );
513 copySpecifiers( q );
514
515 if ( ! q->type ) { delete q; return this; }
516
517 if ( ! type ) {
518 type = q->type; // reuse structure
519 q->type = nullptr;
520 delete q;
521 return this;
522 } // if
523
524 if ( q->type->forall ) { // forall qualifier ?
525 if ( type->forall ) { // polymorphic routine ?
526 type->forall->appendList( q->type->forall ); // augment forall qualifier
527 } else {
528 if ( type->kind == TypeData::Aggregate ) { // struct/union ?
529 if ( type->aggregate.params ) { // polymorphic ?
530 type->aggregate.params->appendList( q->type->forall ); // augment forall qualifier
531 } else { // not polymorphic
532 type->aggregate.params = q->type->forall; // set forall qualifier
533 } // if
534 } else { // not polymorphic
535 type->forall = q->type->forall; // make polymorphic routine
536 } // if
537 } // if
538 q->type->forall = nullptr; // forall qualifier moved
539 } // if
540
541 checkQualifiers( type, q->type );
542 if ( (builtin == Zero || builtin == One) && q->type->qualifiers.val != 0 && error.length() == 0 ) {
543 SemanticWarning( yylloc, Warning::BadQualifiersZeroOne, Type::QualifiersNames[ilog2( q->type->qualifiers.val )], builtinTypeNames[builtin] );
544 } // if
545 addQualifiersToType( q->type, type );
546
547 delete q;
548 return this;
549} // addQualifiers
550
551static void addTypeToType( TypeData *& src, TypeData *& dst ) {
552 if ( src->forall && dst->kind == TypeData::Function ) {
553 if ( dst->forall ) {
554 dst->forall->appendList( src->forall );
555 } else {
556 dst->forall = src->forall;
557 } // if
558 src->forall = nullptr;
559 } // if
560 if ( dst->base ) {
561 addTypeToType( src, dst->base );
562 } else {
563 switch ( dst->kind ) {
564 case TypeData::Unknown:
565 src->qualifiers |= dst->qualifiers;
566 dst = src;
567 src = nullptr;
568 break;
569 case TypeData::Basic:
570 dst->qualifiers |= src->qualifiers;
571 if ( src->kind != TypeData::Unknown ) {
572 assert( src->kind == TypeData::Basic );
573
574 if ( dst->basictype == DeclarationNode::NoBasicType ) {
575 dst->basictype = src->basictype;
576 } else if ( src->basictype != DeclarationNode::NoBasicType )
577 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::basicTypeNames[ src->basictype ] + " in type: " );
578
579 if ( dst->complextype == DeclarationNode::NoComplexType ) {
580 dst->complextype = src->complextype;
581 } else if ( src->complextype != DeclarationNode::NoComplexType )
582 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::complexTypeNames[ src->complextype ] + " in type: " );
583
584 if ( dst->signedness == DeclarationNode::NoSignedness ) {
585 dst->signedness = src->signedness;
586 } else if ( src->signedness != DeclarationNode::NoSignedness )
587 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::signednessNames[ src->signedness ] + " in type: " );
588
589 if ( dst->length == DeclarationNode::NoLength ) {
590 dst->length = src->length;
591 } else if ( dst->length == DeclarationNode::Long && src->length == DeclarationNode::Long ) {
592 dst->length = DeclarationNode::LongLong;
593 } else if ( src->length != DeclarationNode::NoLength )
594 SemanticError( yylloc, src, string( "conflicting type specifier " ) + DeclarationNode::lengthNames[ src->length ] + " in type: " );
595 } // if
596 break;
597 default:
598 switch ( src->kind ) {
599 case TypeData::Aggregate:
600 case TypeData::Enum:
601 dst->base = new TypeData( TypeData::AggregateInst );
602 dst->base->aggInst.aggregate = src;
603 if ( src->kind == TypeData::Aggregate ) {
604 dst->base->aggInst.params = maybeClone( src->aggregate.actuals );
605 } // if
606 dst->base->qualifiers |= src->qualifiers;
607 src = nullptr;
608 break;
609 default:
610 if ( dst->forall ) {
611 dst->forall->appendList( src->forall );
612 } else {
613 dst->forall = src->forall;
614 } // if
615 src->forall = nullptr;
616 dst->base = src;
617 src = nullptr;
618 } // switch
619 } // switch
620 } // if
621}
622
623DeclarationNode * DeclarationNode::addType( DeclarationNode * o ) {
624 if ( o ) {
625 checkSpecifiers( o );
626 copySpecifiers( o );
627 if ( o->type ) {
628 if ( ! type ) {
629 if ( o->type->kind == TypeData::Aggregate || o->type->kind == TypeData::Enum ) {
630 type = new TypeData( TypeData::AggregateInst );
631 type->aggInst.aggregate = o->type;
632 if ( o->type->kind == TypeData::Aggregate ) {
633 type->aggInst.hoistType = o->type->aggregate.body;
634 type->aggInst.params = maybeClone( o->type->aggregate.actuals );
635 } else {
636 type->aggInst.hoistType = o->type->enumeration.body;
637 } // if
638 type->qualifiers |= o->type->qualifiers;
639 } else {
640 type = o->type;
641 } // if
642 o->type = nullptr;
643 } else {
644 addTypeToType( o->type, type );
645 } // if
646 } // if
647 if ( o->bitfieldWidth ) {
648 bitfieldWidth = o->bitfieldWidth;
649 } // if
650
651 // there may be typedefs chained onto the type
652 if ( o->get_next() ) {
653 set_last( o->get_next()->clone() );
654 } // if
655 } // if
656 delete o;
657 return this;
658}
659
660DeclarationNode * DeclarationNode::addTypedef() {
661 TypeData * newtype = new TypeData( TypeData::Symbolic );
662 newtype->symbolic.params = nullptr;
663 newtype->symbolic.isTypedef = true;
664 newtype->symbolic.name = name ? new string( *name ) : nullptr;
665 newtype->base = type;
666 type = newtype;
667 return this;
668}
669
670DeclarationNode * DeclarationNode::addAssertions( DeclarationNode * assertions ) {
671 if ( variable.tyClass != TypeDecl::NUMBER_OF_KINDS ) {
672 if ( variable.assertions ) {
673 variable.assertions->appendList( assertions );
674 } else {
675 variable.assertions = assertions;
676 } // if
677 return this;
678 } // if
679
680 assert( type );
681 switch ( type->kind ) {
682 case TypeData::Symbolic:
683 if ( type->symbolic.assertions ) {
684 type->symbolic.assertions->appendList( assertions );
685 } else {
686 type->symbolic.assertions = assertions;
687 } // if
688 break;
689 default:
690 assert( false );
691 } // switch
692
693 return this;
694}
695
696DeclarationNode * DeclarationNode::addName( string * newname ) {
697 assert( ! name );
698 name = newname;
699 return this;
700}
701
702DeclarationNode * DeclarationNode::addAsmName( DeclarationNode * newname ) {
703 assert( ! asmName );
704 asmName = newname ? newname->asmName : nullptr;
705 return this->addQualifiers( newname );
706}
707
708DeclarationNode * DeclarationNode::addBitfield( ExpressionNode * size ) {
709 bitfieldWidth = size;
710 return this;
711}
712
713DeclarationNode * DeclarationNode::addVarArgs() {
714 assert( type );
715 hasEllipsis = true;
716 return this;
717}
718
719DeclarationNode * DeclarationNode::addFunctionBody( StatementNode * body, ExpressionNode * withExprs ) {
720 assert( type );
721 assert( type->kind == TypeData::Function );
722 assert( ! type->function.body );
723 type->function.body = body;
724 type->function.withExprs = withExprs;
725 return this;
726}
727
728DeclarationNode * DeclarationNode::addOldDeclList( DeclarationNode * list ) {
729 assert( type );
730 assert( type->kind == TypeData::Function );
731 assert( ! type->function.oldDeclList );
732 type->function.oldDeclList = list;
733 return this;
734}
735
736DeclarationNode * DeclarationNode::setBase( TypeData * newType ) {
737 if ( type ) {
738 TypeData * prevBase = type;
739 TypeData * curBase = type->base;
740 while ( curBase != nullptr ) {
741 prevBase = curBase;
742 curBase = curBase->base;
743 } // while
744 prevBase->base = newType;
745 } else {
746 type = newType;
747 } // if
748 return this;
749}
750
751DeclarationNode * DeclarationNode::copyAttribute( DeclarationNode * a ) {
752 if ( a ) {
753 for ( Attribute *attr: reverseIterate( a->attributes ) ) {
754 attributes.push_front( attr );
755 } // for
756 a->attributes.clear();
757 } // if
758 return this;
759} // copyAttribute
760
761DeclarationNode * DeclarationNode::addPointer( DeclarationNode * p ) {
762 if ( p ) {
763 assert( p->type->kind == TypeData::Pointer || p->type->kind == TypeData::Reference );
764 setBase( p->type );
765 p->type = nullptr;
766 copyAttribute( p );
767 delete p;
768 } // if
769 return this;
770}
771
772DeclarationNode * DeclarationNode::addArray( DeclarationNode * a ) {
773 if ( a ) {
774 assert( a->type->kind == TypeData::Array );
775 setBase( a->type );
776 a->type = nullptr;
777 copyAttribute( a );
778 delete a;
779 } // if
780 return this;
781}
782
783DeclarationNode * DeclarationNode::addNewPointer( DeclarationNode * p ) {
784 if ( p ) {
785 assert( p->type->kind == TypeData::Pointer || p->type->kind == TypeData::Reference );
786 if ( type ) {
787 switch ( type->kind ) {
788 case TypeData::Aggregate:
789 case TypeData::Enum:
790 p->type->base = new TypeData( TypeData::AggregateInst );
791 p->type->base->aggInst.aggregate = type;
792 if ( type->kind == TypeData::Aggregate ) {
793 p->type->base->aggInst.params = maybeClone( type->aggregate.actuals );
794 } // if
795 p->type->base->qualifiers |= type->qualifiers;
796 break;
797
798 default:
799 p->type->base = type;
800 } // switch
801 type = nullptr;
802 } // if
803 delete this;
804 return p;
805 } else {
806 return this;
807 } // if
808}
809
810static TypeData * findLast( TypeData * a ) {
811 assert( a );
812 TypeData * cur = a;
813 while ( cur->base ) {
814 cur = cur->base;
815 } // while
816 return cur;
817}
818
819DeclarationNode * DeclarationNode::addNewArray( DeclarationNode * a ) {
820 if ( ! a ) return this;
821 assert( a->type->kind == TypeData::Array );
822 TypeData * lastArray = findLast( a->type );
823 if ( type ) {
824 switch ( type->kind ) {
825 case TypeData::Aggregate:
826 case TypeData::Enum:
827 lastArray->base = new TypeData( TypeData::AggregateInst );
828 lastArray->base->aggInst.aggregate = type;
829 if ( type->kind == TypeData::Aggregate ) {
830 lastArray->base->aggInst.params = maybeClone( type->aggregate.actuals );
831 } // if
832 lastArray->base->qualifiers |= type->qualifiers;
833 break;
834 default:
835 lastArray->base = type;
836 } // switch
837 type = nullptr;
838 } // if
839 delete this;
840 return a;
841}
842
843DeclarationNode * DeclarationNode::addParamList( DeclarationNode * params ) {
844 TypeData * ftype = new TypeData( TypeData::Function );
845 ftype->function.params = params;
846 setBase( ftype );
847 return this;
848}
849
850static TypeData * addIdListToType( TypeData * type, DeclarationNode * ids ) {
851 if ( type ) {
852 if ( type->kind != TypeData::Function ) {
853 type->base = addIdListToType( type->base, ids );
854 } else {
855 type->function.idList = ids;
856 } // if
857 return type;
858 } else {
859 TypeData * newtype = new TypeData( TypeData::Function );
860 newtype->function.idList = ids;
861 return newtype;
862 } // if
863} // addIdListToType
864
865DeclarationNode * DeclarationNode::addIdList( DeclarationNode * ids ) {
866 type = addIdListToType( type, ids );
867 return this;
868}
869
870DeclarationNode * DeclarationNode::addInitializer( InitializerNode * init ) {
871 initializer = init;
872 return this;
873}
874
875DeclarationNode * DeclarationNode::addTypeInitializer( DeclarationNode * init ) {
876 assertf( variable.tyClass != TypeDecl::NUMBER_OF_KINDS, "Called addTypeInitializer on something that isn't a type variable." );
877 variable.initializer = init;
878 return this;
879}
880
881DeclarationNode * DeclarationNode::cloneType( string * newName ) {
882 DeclarationNode * newnode = new DeclarationNode;
883 newnode->type = maybeClone( type );
884 newnode->copySpecifiers( this );
885 assert( newName );
886 newnode->name = newName;
887 return newnode;
888}
889
890DeclarationNode * DeclarationNode::cloneBaseType( DeclarationNode * o ) {
891 if ( ! o ) return nullptr;
892
893 o->copySpecifiers( this );
894 if ( type ) {
895 TypeData * srcType = type;
896
897 // search for the base type by scanning off pointers and array designators
898 while ( srcType->base ) {
899 srcType = srcType->base;
900 } // while
901
902 TypeData * newType = srcType->clone();
903 if ( newType->kind == TypeData::AggregateInst ) {
904 // don't duplicate members
905 if ( newType->aggInst.aggregate->kind == TypeData::Enum ) {
906 delete newType->aggInst.aggregate->enumeration.constants;
907 newType->aggInst.aggregate->enumeration.constants = nullptr;
908 newType->aggInst.aggregate->enumeration.body = false;
909 } else {
910 assert( newType->aggInst.aggregate->kind == TypeData::Aggregate );
911 delete newType->aggInst.aggregate->aggregate.fields;
912 newType->aggInst.aggregate->aggregate.fields = nullptr;
913 newType->aggInst.aggregate->aggregate.body = false;
914 } // if
915 // don't hoist twice
916 newType->aggInst.hoistType = false;
917 } // if
918
919 newType->forall = maybeClone( type->forall );
920 if ( ! o->type ) {
921 o->type = newType;
922 } else {
923 addTypeToType( newType, o->type );
924 delete newType;
925 } // if
926 } // if
927 return o;
928}
929
930DeclarationNode * DeclarationNode::extractAggregate() const {
931 if ( type ) {
932 TypeData * ret = typeextractAggregate( type );
933 if ( ret ) {
934 DeclarationNode * newnode = new DeclarationNode;
935 newnode->type = ret;
936 return newnode;
937 } // if
938 } // if
939 return nullptr;
940}
941
942void buildList( const DeclarationNode * firstNode, std::list< Declaration * > & outputList ) {
943 SemanticErrorException errors;
944 std::back_insert_iterator< std::list< Declaration * > > out( outputList );
945
946 for ( const DeclarationNode * cur = firstNode; cur; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
947 try {
948 bool extracted = false;
949 bool anon = false;
950 if ( DeclarationNode * extr = cur->extractAggregate() ) {
951 // handle the case where a structure declaration is contained within an object or type declaration
952 Declaration * decl = extr->build();
953 if ( decl ) {
954 // hoist the structure declaration
955 decl->location = cur->location;
956 * out++ = decl;
957
958 // need to remember the cases where a declaration contains an anonymous aggregate definition
959 extracted = true;
960 assert( extr->type );
961 if ( extr->type->kind == TypeData::Aggregate ) {
962 anon = extr->type->aggregate.anon;
963 } else if ( extr->type->kind == TypeData::Enum ) {
964 // xxx - is it useful to have an implicit anonymous enum member?
965 anon = extr->type->enumeration.anon;
966 }
967 } // if
968 delete extr;
969 } // if
970
971 Declaration * decl = cur->build();
972 if ( decl ) {
973 // don't include anonymous declaration for named aggregates, but do include them for anonymous aggregates, e.g.:
974 // struct S {
975 // struct T { int x; }; // no anonymous member
976 // struct { int y; }; // anonymous member
977 // struct T; // anonymous member
978 // };
979 if ( ! (extracted && decl->name == "" && ! anon && ! cur->get_inLine()) ) {
980 if ( decl->name == "" ) {
981 if ( DeclarationWithType * dwt = dynamic_cast<DeclarationWithType *>( decl ) ) {
982 if ( ReferenceToType * aggr = dynamic_cast<ReferenceToType *>( dwt->get_type() ) ) {
983 if ( aggr->name.find("anonymous") == std::string::npos ) {
984 if ( ! cur->get_inLine() ) {
985 // temporary: warn about anonymous member declarations of named types, since
986 // this conflicts with the syntax for the forward declaration of an anonymous type
987 SemanticWarning( cur->location, Warning::AggrForwardDecl, aggr->name.c_str() );
988 } // if
989 } // if
990 } // if
991 } // if
992 } // if
993 decl->location = cur->location;
994 *out++ = decl;
995 } // if
996 } // if
997 } catch( SemanticErrorException & e ) {
998 errors.append( e );
999 } // try
1000 } // for
1001
1002 if ( ! errors.isEmpty() ) {
1003 throw errors;
1004 } // if
1005} // buildList
1006
1007// currently only builds assertions, function parameters, and return values
1008void buildList( const DeclarationNode * firstNode, std::list< DeclarationWithType * > & outputList ) {
1009 SemanticErrorException errors;
1010 std::back_insert_iterator< std::list< DeclarationWithType * > > out( outputList );
1011
1012 for ( const DeclarationNode * cur = firstNode; cur; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
1013 try {
1014 Declaration * decl = cur->build();
1015 assert( decl );
1016 if ( DeclarationWithType * dwt = dynamic_cast< DeclarationWithType * >( decl ) ) {
1017 dwt->location = cur->location;
1018 *out++ = dwt;
1019 } else if ( StructDecl * agg = dynamic_cast< StructDecl * >( decl ) ) {
1020 // e.g., int foo(struct S) {}
1021 StructInstType * inst = new StructInstType( Type::Qualifiers(), agg->name );
1022 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
1023 obj->location = cur->location;
1024 *out++ = obj;
1025 delete agg;
1026 } else if ( UnionDecl * agg = dynamic_cast< UnionDecl * >( decl ) ) {
1027 // e.g., int foo(union U) {}
1028 UnionInstType * inst = new UnionInstType( Type::Qualifiers(), agg->name );
1029 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
1030 obj->location = cur->location;
1031 *out++ = obj;
1032 } else if ( EnumDecl * agg = dynamic_cast< EnumDecl * >( decl ) ) {
1033 // e.g., int foo(enum E) {}
1034 EnumInstType * inst = new EnumInstType( Type::Qualifiers(), agg->name );
1035 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
1036 obj->location = cur->location;
1037 *out++ = obj;
1038 } // if
1039 } catch( SemanticErrorException & e ) {
1040 errors.append( e );
1041 } // try
1042 } // for
1043
1044 if ( ! errors.isEmpty() ) {
1045 throw errors;
1046 } // if
1047} // buildList
1048
1049void buildTypeList( const DeclarationNode * firstNode, std::list< Type * > & outputList ) {
1050 SemanticErrorException errors;
1051 std::back_insert_iterator< std::list< Type * > > out( outputList );
1052 const DeclarationNode * cur = firstNode;
1053
1054 while ( cur ) {
1055 try {
1056 * out++ = cur->buildType();
1057 } catch( SemanticErrorException & e ) {
1058 errors.append( e );
1059 } // try
1060 cur = dynamic_cast< DeclarationNode * >( cur->get_next() );
1061 } // while
1062
1063 if ( ! errors.isEmpty() ) {
1064 throw errors;
1065 } // if
1066} // buildTypeList
1067
1068Declaration * DeclarationNode::build() const {
1069 if ( ! error.empty() ) SemanticError( this, error + " in declaration of " );
1070
1071 if ( asmStmt ) {
1072 return new AsmDecl( strict_dynamic_cast<AsmStmt *>( asmStmt->build() ) );
1073 } // if
1074
1075 if ( variable.tyClass != TypeDecl::NUMBER_OF_KINDS ) {
1076 // otype is internally converted to dtype + otype parameters
1077 static const TypeDecl::Kind kindMap[] = { TypeDecl::Dtype, TypeDecl::Dtype, TypeDecl::Ftype, TypeDecl::Ttype };
1078 static_assert( sizeof(kindMap)/sizeof(kindMap[0]) == TypeDecl::NUMBER_OF_KINDS, "DeclarationNode::build: kindMap is out of sync." );
1079 assertf( variable.tyClass < sizeof(kindMap)/sizeof(kindMap[0]), "Variable's tyClass is out of bounds." );
1080 TypeDecl * ret = new TypeDecl( *name, Type::StorageClasses(), nullptr, kindMap[ variable.tyClass ], variable.tyClass == TypeDecl::Otype, variable.initializer ? variable.initializer->buildType() : nullptr );
1081 buildList( variable.assertions, ret->get_assertions() );
1082 return ret;
1083 } // if
1084
1085 if ( type ) {
1086 // Function specifiers can only appear on a function definition/declaration.
1087 //
1088 // inline _Noreturn int f(); // allowed
1089 // inline _Noreturn int g( int i ); // allowed
1090 // inline _Noreturn int i; // disallowed
1091 if ( type->kind != TypeData::Function && funcSpecs.any() ) {
1092 SemanticError( this, "invalid function specifier for " );
1093 } // if
1094 // Forall qualifier can only appear on a function/aggregate definition/declaration.
1095 //
1096 // forall int f(); // allowed
1097 // forall int g( int i ); // allowed
1098 // forall int i; // disallowed
1099 if ( type->kind != TypeData::Function && type->forall ) {
1100 SemanticError( this, "invalid type qualifier for " );
1101 } // if
1102 bool isDelete = initializer && initializer->get_isDelete();
1103 Declaration * decl = buildDecl( type, name ? *name : string( "" ), storageClasses, maybeBuild< Expression >( bitfieldWidth ), funcSpecs, linkage, asmName, isDelete ? nullptr : maybeBuild< Initializer >(initializer), attributes )->set_extension( extension );
1104 if ( isDelete ) {
1105 DeclarationWithType * dwt = strict_dynamic_cast<DeclarationWithType *>( decl );
1106 dwt->isDeleted = true;
1107 }
1108 return decl;
1109 } // if
1110
1111 if ( assert.condition ) {
1112 return new StaticAssertDecl( maybeBuild< Expression >( assert.condition ), strict_dynamic_cast< ConstantExpr * >( maybeClone( assert.message ) ) );
1113 }
1114
1115 // SUE's cannot have function specifiers, either
1116 //
1117 // inline _Noreturn struct S { ... }; // disallowed
1118 // inline _Noreturn enum E { ... }; // disallowed
1119 if ( funcSpecs.any() ) {
1120 SemanticError( this, "invalid function specifier for " );
1121 } // if
1122 assertf( name, "ObjectDecl must a have name\n" );
1123 return (new ObjectDecl( *name, storageClasses, linkage, maybeBuild< Expression >( bitfieldWidth ), nullptr, maybeBuild< Initializer >( initializer ) ))->set_asmName( asmName )->set_extension( extension );
1124}
1125
1126Type * DeclarationNode::buildType() const {
1127 assert( type );
1128
1129 if ( attr.expr ) {
1130 return new AttrType( buildQualifiers( type ), *name, attr.expr->build(), attributes );
1131 } else if ( attr.type ) {
1132 return new AttrType( buildQualifiers( type ), *name, attr.type->buildType(), attributes );
1133 } // if
1134
1135 switch ( type->kind ) {
1136 case TypeData::Enum:
1137 case TypeData::Aggregate: {
1138 ReferenceToType * ret = buildComAggInst( type, attributes, linkage );
1139 buildList( type->aggregate.actuals, ret->get_parameters() );
1140 return ret;
1141 }
1142 case TypeData::Symbolic: {
1143 TypeInstType * ret = new TypeInstType( buildQualifiers( type ), *type->symbolic.name, false, attributes );
1144 buildList( type->symbolic.actuals, ret->get_parameters() );
1145 return ret;
1146 }
1147 default:
1148 Type * simpletypes = typebuild( type );
1149 simpletypes->get_attributes() = attributes; // copy because member is const
1150 return simpletypes;
1151 } // switch
1152}
1153
1154// Local Variables: //
1155// tab-width: 4 //
1156// mode: c++ //
1157// compile-command: "make install" //
1158// End: //
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