source: src/Parser/DeclarationNode.cc@ 25ba999

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc
Last change on this file since 25ba999 was f0ecf9b, checked in by Rob Schluntz <rschlunt@…>, 8 years ago

Remove TypeDecl::Any, as it is subsumed by Dtype+sized
  • Property mode set to 100644
File size: 35.4 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 : Sat Sep 23 18:16:48 2017
13// Update Count : 1024
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/LinkageSpec.h" // for Spec, linkageName, Cforall
27#include "Parser/ParseNode.h" // for DeclarationNode, ExpressionNode
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, TypedefTable::kind_t...
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", "float", "double", "long double", "int128", "float80", "float128", "NoBasicTypeNames" };
44const char * DeclarationNode::complexTypeNames[] = { "_Complex", "_Imaginary", "NoComplexTypeNames" };
45const char * DeclarationNode::signednessNames[] = { "signed", "unsigned", "NoSignednessNames" };
46const char * DeclarationNode::lengthNames[] = { "short", "long", "long long", "NoLengthNames" };
47const char * DeclarationNode::aggregateNames[] = { "struct", "union", "trait", "coroutine", "monitor", "thread", "NoAggregateNames" };
48const char * DeclarationNode::typeClassNames[] = { "otype", "dtype", "ftype", "NoTypeClassNames" };
49const char * DeclarationNode::builtinTypeNames[] = { "__builtin_va_list", "NoBuiltinTypeNames" };
50
51UniqueName DeclarationNode::anonymous( "__anonymous" );
52
53extern LinkageSpec::Spec linkage; // defined in parser.yy
54
55DeclarationNode::DeclarationNode() :
56 type( nullptr ),
57 bitfieldWidth( nullptr ),
58 hasEllipsis( false ),
59 linkage( ::linkage ),
60 asmName( nullptr ),
61 initializer( nullptr ),
62 extension( false ),
63 asmStmt( nullptr ) {
64
65// variable.name = nullptr;
66 variable.tyClass = NoTypeClass;
67 variable.assertions = nullptr;
68 variable.initializer = nullptr;
69
70// attr.name = nullptr;
71 attr.expr = nullptr;
72 attr.type = nullptr;
73}
74
75DeclarationNode::~DeclarationNode() {
76// delete attr.name;
77 delete attr.expr;
78 delete attr.type;
79
80// delete variable.name;
81 delete variable.assertions;
82 delete variable.initializer;
83
84 delete type;
85 delete bitfieldWidth;
86
87 delete asmStmt;
88 // asmName, no delete, passed to next stage
89 delete initializer;
90}
91
92DeclarationNode * DeclarationNode::clone() const {
93 DeclarationNode * newnode = new DeclarationNode;
94 newnode->set_next( maybeClone( get_next() ) );
95 newnode->name = name ? new string( *name ) : nullptr;
96
97 newnode->type = maybeClone( type );
98 newnode->storageClasses = storageClasses;
99 newnode->funcSpecs = funcSpecs;
100 newnode->bitfieldWidth = maybeClone( bitfieldWidth );
101 newnode->enumeratorValue.reset( maybeClone( enumeratorValue.get() ) );
102 newnode->hasEllipsis = hasEllipsis;
103 newnode->linkage = linkage;
104 newnode->asmName = maybeClone( asmName );
105 cloneAll( attributes, newnode->attributes );
106 newnode->initializer = maybeClone( initializer );
107 newnode->extension = extension;
108 newnode->asmStmt = maybeClone( asmStmt );
109 newnode->error = error;
110
111// newnode->variable.name = variable.name ? new string( *variable.name ) : nullptr;
112 newnode->variable.tyClass = variable.tyClass;
113 newnode->variable.assertions = maybeClone( variable.assertions );
114 newnode->variable.initializer = maybeClone( variable.initializer );
115
116// newnode->attr.name = attr.name ? new string( *attr.name ) : nullptr;
117 newnode->attr.expr = maybeClone( attr.expr );
118 newnode->attr.type = maybeClone( attr.type );
119 return newnode;
120} // DeclarationNode::clone
121
122bool DeclarationNode::get_hasEllipsis() const {
123 return hasEllipsis;
124}
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::linkageName( 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( string * name, DeclarationNode * ret, DeclarationNode * param, StatementNode * body, bool newStyle ) {
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.newStyle = newStyle;
175 newnode->type->function.body = body;
176
177 // ignore unnamed routine declarations: void p( int (*)(int) );
178 if ( newnode->name ) {
179 typedefTable.addToEnclosingScope( *newnode->name, TypedefTable::ID );
180 } // if
181
182 if ( ret ) {
183 newnode->type->base = ret->type;
184 ret->type = nullptr;
185 delete ret;
186 } // if
187
188 return newnode;
189} // DeclarationNode::newFunction
190
191
192DeclarationNode * DeclarationNode::newStorageClass( Type::StorageClasses sc ) {
193 DeclarationNode * newnode = new DeclarationNode;
194 newnode->storageClasses = sc;
195 return newnode;
196} // DeclarationNode::newStorageClass
197
198DeclarationNode * DeclarationNode::newFuncSpecifier( Type::FuncSpecifiers fs ) {
199 DeclarationNode * newnode = new DeclarationNode;
200 newnode->funcSpecs = fs;
201 return newnode;
202} // DeclarationNode::newFuncSpecifier
203
204DeclarationNode * DeclarationNode::newTypeQualifier( Type::Qualifiers tq ) {
205 DeclarationNode * newnode = new DeclarationNode;
206 newnode->type = new TypeData();
207 newnode->type->qualifiers = tq;
208 return newnode;
209} // DeclarationNode::newQualifier
210
211DeclarationNode * DeclarationNode::newBasicType( BasicType bt ) {
212 DeclarationNode * newnode = new DeclarationNode;
213 newnode->type = new TypeData( TypeData::Basic );
214 newnode->type->basictype = bt;
215 return newnode;
216} // DeclarationNode::newBasicType
217
218DeclarationNode * DeclarationNode::newComplexType( ComplexType ct ) {
219 DeclarationNode * newnode = new DeclarationNode;
220 newnode->type = new TypeData( TypeData::Basic );
221 newnode->type->complextype = ct;
222 return newnode;
223} // DeclarationNode::newComplexType
224
225DeclarationNode * DeclarationNode::newSignedNess( Signedness sn ) {
226 DeclarationNode * newnode = new DeclarationNode;
227 newnode->type = new TypeData( TypeData::Basic );
228 newnode->type->signedness = sn;
229 return newnode;
230} // DeclarationNode::newSignedNess
231
232DeclarationNode * DeclarationNode::newLength( Length lnth ) {
233 DeclarationNode * newnode = new DeclarationNode;
234 newnode->type = new TypeData( TypeData::Basic );
235 newnode->type->length = lnth;
236 return newnode;
237} // DeclarationNode::newLength
238
239DeclarationNode * DeclarationNode::newForall( DeclarationNode * forall ) {
240 DeclarationNode * newnode = new DeclarationNode;
241 newnode->type = new TypeData( TypeData::Unknown );
242 newnode->type->forall = forall;
243 return newnode;
244} // DeclarationNode::newForall
245
246DeclarationNode * DeclarationNode::newFromTypedef( string * name ) {
247 DeclarationNode * newnode = new DeclarationNode;
248 newnode->type = new TypeData( TypeData::SymbolicInst );
249 newnode->type->symbolic.name = name;
250 newnode->type->symbolic.isTypedef = true;
251 newnode->type->symbolic.params = nullptr;
252 return newnode;
253} // DeclarationNode::newFromTypedef
254
255DeclarationNode * DeclarationNode::newAggregate( Aggregate kind, const string * name, ExpressionNode * actuals, DeclarationNode * fields, bool body ) {
256 assert( name );
257 DeclarationNode * newnode = new DeclarationNode;
258 newnode->type = new TypeData( TypeData::Aggregate );
259 newnode->type->aggregate.kind = kind;
260 newnode->type->aggregate.name = name;
261 newnode->type->aggregate.actuals = actuals;
262 newnode->type->aggregate.fields = fields;
263 newnode->type->aggregate.body = body;
264 newnode->type->aggregate.tagged = false;
265 newnode->type->aggregate.parent = nullptr;
266 return newnode;
267} // DeclarationNode::newAggregate
268
269DeclarationNode * DeclarationNode::newEnum( string * name, DeclarationNode * constants, bool body ) {
270 assert( name );
271 DeclarationNode * newnode = new DeclarationNode;
272 newnode->type = new TypeData( TypeData::Enum );
273 newnode->type->enumeration.name = name;
274 newnode->type->enumeration.constants = constants;
275 newnode->type->enumeration.body = body;
276 return newnode;
277} // DeclarationNode::newEnum
278
279DeclarationNode * DeclarationNode::newEnumConstant( string * name, ExpressionNode * constant ) {
280 DeclarationNode * newnode = new DeclarationNode;
281 newnode->name = name;
282 newnode->enumeratorValue.reset( constant );
283 typedefTable.addToEnclosingScope( *newnode->name, TypedefTable::ID );
284 return newnode;
285} // DeclarationNode::newEnumConstant
286
287DeclarationNode * DeclarationNode::newName( string * name ) {
288 DeclarationNode * newnode = new DeclarationNode;
289 newnode->name = name;
290 return newnode;
291} // DeclarationNode::newName
292
293DeclarationNode * DeclarationNode::newFromTypeGen( string * name, ExpressionNode * params ) {
294 DeclarationNode * newnode = new DeclarationNode;
295 newnode->type = new TypeData( TypeData::SymbolicInst );
296 newnode->type->symbolic.name = name;
297 newnode->type->symbolic.isTypedef = false;
298 newnode->type->symbolic.actuals = params;
299 return newnode;
300} // DeclarationNode::newFromTypeGen
301
302DeclarationNode * DeclarationNode::newTypeParam( TypeClass tc, string * name ) {
303 DeclarationNode * newnode = new DeclarationNode;
304 newnode->type = nullptr;
305 assert( ! newnode->name );
306// newnode->variable.name = name;
307 newnode->name = name;
308 newnode->variable.tyClass = tc;
309 newnode->variable.assertions = nullptr;
310 return newnode;
311} // DeclarationNode::newTypeParam
312
313DeclarationNode * DeclarationNode::newTrait( const string * name, DeclarationNode * params, DeclarationNode * asserts ) {
314 DeclarationNode * newnode = new DeclarationNode;
315 newnode->type = new TypeData( TypeData::Aggregate );
316 newnode->type->aggregate.name = name;
317 newnode->type->aggregate.kind = Trait;
318 newnode->type->aggregate.params = params;
319 newnode->type->aggregate.fields = asserts;
320 return newnode;
321} // DeclarationNode::newTrait
322
323DeclarationNode * DeclarationNode::newTraitUse( const string * name, ExpressionNode * params ) {
324 DeclarationNode * newnode = new DeclarationNode;
325 newnode->type = new TypeData( TypeData::AggregateInst );
326 newnode->type->aggInst.aggregate = new TypeData( TypeData::Aggregate );
327 newnode->type->aggInst.aggregate->aggregate.kind = Trait;
328 newnode->type->aggInst.aggregate->aggregate.name = name;
329 newnode->type->aggInst.params = params;
330 return newnode;
331} // DeclarationNode::newTraitUse
332
333DeclarationNode * DeclarationNode::newTypeDecl( string * name, DeclarationNode * typeParams ) {
334 DeclarationNode * newnode = new DeclarationNode;
335 newnode->name = name;
336 newnode->type = new TypeData( TypeData::Symbolic );
337 newnode->type->symbolic.isTypedef = false;
338 newnode->type->symbolic.params = typeParams;
339 return newnode;
340} // DeclarationNode::newTypeDecl
341
342DeclarationNode * DeclarationNode::newPointer( DeclarationNode * qualifiers, OperKinds kind ) {
343 DeclarationNode * newnode = new DeclarationNode;
344 newnode->type = new TypeData( kind == OperKinds::PointTo ? TypeData::Pointer : TypeData::Reference );
345 if ( qualifiers ) {
346 return newnode->addQualifiers( qualifiers );
347 } else {
348 return newnode;
349 } // if
350} // DeclarationNode::newPointer
351
352DeclarationNode * DeclarationNode::newArray( ExpressionNode * size, DeclarationNode * qualifiers, bool isStatic ) {
353 DeclarationNode * newnode = new DeclarationNode;
354 newnode->type = new TypeData( TypeData::Array );
355 newnode->type->array.dimension = size;
356 newnode->type->array.isStatic = isStatic;
357 if ( newnode->type->array.dimension == nullptr || newnode->type->array.dimension->isExpressionType<ConstantExpr * >() ) {
358 newnode->type->array.isVarLen = false;
359 } else {
360 newnode->type->array.isVarLen = true;
361 } // if
362 return newnode->addQualifiers( qualifiers );
363} // DeclarationNode::newArray
364
365DeclarationNode * DeclarationNode::newVarArray( DeclarationNode * qualifiers ) {
366 DeclarationNode * newnode = new DeclarationNode;
367 newnode->type = new TypeData( TypeData::Array );
368 newnode->type->array.dimension = nullptr;
369 newnode->type->array.isStatic = false;
370 newnode->type->array.isVarLen = true;
371 return newnode->addQualifiers( qualifiers );
372}
373
374DeclarationNode * DeclarationNode::newBitfield( ExpressionNode * size ) {
375 DeclarationNode * newnode = new DeclarationNode;
376 newnode->bitfieldWidth = size;
377 return newnode;
378}
379
380DeclarationNode * DeclarationNode::newTuple( DeclarationNode * members ) {
381 DeclarationNode * newnode = new DeclarationNode;
382 newnode->type = new TypeData( TypeData::Tuple );
383 newnode->type->tuple = members;
384 return newnode;
385}
386
387DeclarationNode * DeclarationNode::newTypeof( ExpressionNode * expr ) {
388 DeclarationNode * newnode = new DeclarationNode;
389 newnode->type = new TypeData( TypeData::Typeof );
390 newnode->type->typeexpr = expr;
391 return newnode;
392}
393
394DeclarationNode * DeclarationNode::newBuiltinType( BuiltinType bt ) {
395 DeclarationNode * newnode = new DeclarationNode;
396 newnode->type = new TypeData( TypeData::Builtin );
397 newnode->builtin = bt;
398 newnode->type->builtintype = newnode->builtin;
399 return newnode;
400} // DeclarationNode::newBuiltinType
401
402DeclarationNode * DeclarationNode::newAttr( string * name, ExpressionNode * expr ) {
403 DeclarationNode * newnode = new DeclarationNode;
404 newnode->type = nullptr;
405// newnode->attr.name = name;
406 newnode->name = name;
407 newnode->attr.expr = expr;
408 return newnode;
409}
410
411DeclarationNode * DeclarationNode::newAttr( string * name, DeclarationNode * type ) {
412 DeclarationNode * newnode = new DeclarationNode;
413 newnode->type = nullptr;
414// newnode->attr.name = name;
415 newnode->name = name;
416 newnode->attr.type = type;
417 return newnode;
418}
419
420DeclarationNode * DeclarationNode::newAttribute( 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::newAsmStmt( StatementNode * stmt ) {
431 DeclarationNode * newnode = new DeclarationNode;
432 newnode->asmStmt = stmt;
433 return newnode;
434}
435
436void appendError( string & dst, const string & src ) {
437 if ( src.empty() ) return;
438 if ( dst.empty() ) { dst = src; return; }
439 dst += ", " + src;
440} // appendError
441
442void DeclarationNode::checkQualifiers( const TypeData * src, const TypeData * dst ) {
443 const Type::Qualifiers qsrc = src->qualifiers, qdst = dst->qualifiers; // optimization
444
445 if ( (qsrc & qdst).any() ) { // duplicates ?
446 for ( unsigned int i = 0; i < Type::NumTypeQualifier; i += 1 ) { // find duplicates
447 if ( qsrc[i] && qdst[i] ) {
448 appendError( error, string( "duplicate " ) + Type::QualifiersNames[i] );
449 } // if
450 } // for
451 } // for
452} // DeclarationNode::checkQualifiers
453
454void DeclarationNode::checkSpecifiers( DeclarationNode * src ) {
455 if ( (funcSpecs & src->funcSpecs).any() ) { // duplicates ?
456 for ( unsigned int i = 0; i < Type::NumFuncSpecifier; i += 1 ) { // find duplicates
457 if ( funcSpecs[i] && src->funcSpecs[i] ) {
458 appendError( error, string( "duplicate " ) + Type::FuncSpecifiersNames[i] );
459 } // if
460 } // for
461 } // if
462
463 if ( storageClasses.any() && src->storageClasses.any() ) { // any reason to check ?
464 if ( (storageClasses & src->storageClasses ).any() ) { // duplicates ?
465 for ( unsigned int i = 0; i < Type::NumStorageClass; i += 1 ) { // find duplicates
466 if ( storageClasses[i] && src->storageClasses[i] ) {
467 appendError( error, string( "duplicate " ) + Type::StorageClassesNames[i] );
468 } // if
469 } // for
470 // src is the new item being added and has a single bit
471 } else if ( ! src->storageClasses.is_threadlocal ) { // conflict ?
472 appendError( error, string( "conflicting " ) + Type::StorageClassesNames[storageClasses.ffs()] +
473 " & " + Type::StorageClassesNames[src->storageClasses.ffs()] );
474 src->storageClasses.reset(); // FIX to preserve invariant of one basic storage specifier
475 } // if
476 } // if
477
478 appendError( error, src->error );
479} // DeclarationNode::checkSpecifiers
480
481DeclarationNode * DeclarationNode::copySpecifiers( DeclarationNode * q ) {
482 funcSpecs |= q->funcSpecs;
483 storageClasses |= q->storageClasses;
484
485 for ( Attribute *attr: reverseIterate( q->attributes ) ) {
486 attributes.push_front( attr->clone() );
487 } // for
488 return this;
489} // DeclarationNode::copySpecifiers
490
491static void addQualifiersToType( TypeData *&src, TypeData * dst ) {
492 if ( src->forall && dst->kind == TypeData::Function ) {
493 if ( dst->forall ) {
494 dst->forall->appendList( src->forall );
495 } else {
496 dst->forall = src->forall;
497 } // if
498 src->forall = nullptr;
499 } // if
500 if ( dst->base ) {
501 addQualifiersToType( src, dst->base );
502 } else if ( dst->kind == TypeData::Function ) {
503 dst->base = src;
504 src = nullptr;
505 } else {
506 dst->qualifiers |= src->qualifiers;
507 } // if
508} // addQualifiersToType
509
510DeclarationNode * DeclarationNode::addQualifiers( DeclarationNode * q ) {
511 if ( ! q ) { delete q; return this; }
512
513 checkSpecifiers( q );
514 copySpecifiers( q );
515
516 if ( ! q->type ) {
517 delete q;
518 return this;
519 } // if
520
521 if ( ! type ) {
522 type = q->type; // reuse this structure
523 q->type = nullptr;
524 delete q;
525 return this;
526 } // if
527
528 if ( q->type->forall ) {
529 if ( type->forall ) {
530 type->forall->appendList( q->type->forall );
531 } else {
532 if ( type->kind == TypeData::Aggregate ) {
533 type->aggregate.params = q->type->forall;
534 // change implicit typedef from TYPEDEFname to TYPEGENname
535 typedefTable.changeKind( *type->aggregate.name, TypedefTable::TG );
536 } else {
537 type->forall = q->type->forall;
538 } // if
539 } // if
540 q->type->forall = nullptr;
541 } // if
542
543 checkQualifiers( type, q->type );
544 addQualifiersToType( q->type, type );
545
546 delete q;
547 return this;
548} // addQualifiers
549
550static void addTypeToType( TypeData *&src, TypeData *&dst ) {
551 if ( src->forall && dst->kind == TypeData::Function ) {
552 if ( dst->forall ) {
553 dst->forall->appendList( src->forall );
554 } else {
555 dst->forall = src->forall;
556 } // if
557 src->forall = nullptr;
558 } // if
559 if ( dst->base ) {
560 addTypeToType( src, dst->base );
561 } else {
562 switch ( dst->kind ) {
563 case TypeData::Unknown:
564 src->qualifiers |= dst->qualifiers;
565 dst = src;
566 src = nullptr;
567 break;
568 case TypeData::Basic:
569 dst->qualifiers |= src->qualifiers;
570 if ( src->kind != TypeData::Unknown ) {
571 assert( src->kind == TypeData::Basic );
572
573 if ( dst->basictype == DeclarationNode::NoBasicType ) {
574 dst->basictype = src->basictype;
575 } else if ( src->basictype != DeclarationNode::NoBasicType )
576 throw SemanticError( string( "conflicting type specifier " ) + DeclarationNode::basicTypeNames[ src->basictype ] + " in type: ", src );
577
578 if ( dst->complextype == DeclarationNode::NoComplexType ) {
579 dst->complextype = src->complextype;
580 } else if ( src->complextype != DeclarationNode::NoComplexType )
581 throw SemanticError( string( "conflicting type specifier " ) + DeclarationNode::complexTypeNames[ src->complextype ] + " in type: ", src );
582
583 if ( dst->signedness == DeclarationNode::NoSignedness ) {
584 dst->signedness = src->signedness;
585 } else if ( src->signedness != DeclarationNode::NoSignedness )
586 throw SemanticError( string( "conflicting type specifier " ) + DeclarationNode::signednessNames[ src->signedness ] + " in type: ", src );
587
588 if ( dst->length == DeclarationNode::NoLength ) {
589 dst->length = src->length;
590 } else if ( dst->length == DeclarationNode::Long && src->length == DeclarationNode::Long ) {
591 dst->length = DeclarationNode::LongLong;
592 } else if ( src->length != DeclarationNode::NoLength )
593 throw SemanticError( string( "conflicting type specifier " ) + DeclarationNode::lengthNames[ src->length ] + " in type: ", src );
594 } // if
595 break;
596 default:
597 switch ( src->kind ) {
598 case TypeData::Aggregate:
599 case TypeData::Enum:
600 dst->base = new TypeData( TypeData::AggregateInst );
601 dst->base->aggInst.aggregate = src;
602 if ( src->kind == TypeData::Aggregate ) {
603 dst->base->aggInst.params = maybeClone( src->aggregate.actuals );
604 } // if
605 dst->base->qualifiers |= src->qualifiers;
606 src = nullptr;
607 break;
608 default:
609 if ( dst->forall ) {
610 dst->forall->appendList( src->forall );
611 } else {
612 dst->forall = src->forall;
613 } // if
614 src->forall = nullptr;
615 dst->base = src;
616 src = nullptr;
617 } // switch
618 } // switch
619 } // if
620}
621
622DeclarationNode * DeclarationNode::addType( DeclarationNode * o ) {
623 if ( o ) {
624 checkSpecifiers( o );
625 copySpecifiers( o );
626 if ( o->type ) {
627 if ( ! type ) {
628 if ( o->type->kind == TypeData::Aggregate || o->type->kind == TypeData::Enum ) {
629 type = new TypeData( TypeData::AggregateInst );
630 type->aggInst.aggregate = o->type;
631 if ( o->type->kind == TypeData::Aggregate ) {
632 type->aggInst.hoistType = o->type->aggregate.body;
633 type->aggInst.params = maybeClone( o->type->aggregate.actuals );
634 } else {
635 type->aggInst.hoistType = o->type->enumeration.body;
636 } // if
637 type->qualifiers |= o->type->qualifiers;
638 } else {
639 type = o->type;
640 } // if
641 o->type = nullptr;
642 } else {
643 addTypeToType( o->type, type );
644 } // if
645 } // if
646 if ( o->bitfieldWidth ) {
647 bitfieldWidth = o->bitfieldWidth;
648 } // if
649
650 // there may be typedefs chained onto the type
651 if ( o->get_next() ) {
652 set_last( o->get_next()->clone() );
653 } // if
654 } // if
655 delete o;
656 return this;
657}
658
659DeclarationNode * DeclarationNode::addTypedef() {
660 TypeData * newtype = new TypeData( TypeData::Symbolic );
661 newtype->symbolic.params = nullptr;
662 newtype->symbolic.isTypedef = true;
663 newtype->symbolic.name = name ? new string( *name ) : nullptr;
664 newtype->base = type;
665 type = newtype;
666 return this;
667}
668
669DeclarationNode * DeclarationNode::addAssertions( DeclarationNode * assertions ) {
670 if ( variable.tyClass != NoTypeClass ) {
671 if ( variable.assertions ) {
672 variable.assertions->appendList( assertions );
673 } else {
674 variable.assertions = assertions;
675 } // if
676 return this;
677 } // if
678
679 assert( type );
680 switch ( type->kind ) {
681 case TypeData::Symbolic:
682 if ( type->symbolic.assertions ) {
683 type->symbolic.assertions->appendList( assertions );
684 } else {
685 type->symbolic.assertions = assertions;
686 } // if
687 break;
688 default:
689 assert( false );
690 } // switch
691
692 return this;
693}
694
695DeclarationNode * DeclarationNode::addName( string * newname ) {
696 assert( ! name );
697 name = newname;
698 return this;
699}
700
701DeclarationNode * DeclarationNode::addAsmName( DeclarationNode * newname ) {
702 assert( ! asmName );
703 asmName = newname ? newname->asmName : nullptr;
704 return this->addQualifiers( newname );
705}
706
707DeclarationNode * DeclarationNode::addBitfield( ExpressionNode * size ) {
708 bitfieldWidth = size;
709 return this;
710}
711
712DeclarationNode * DeclarationNode::addVarArgs() {
713 assert( type );
714 hasEllipsis = true;
715 return this;
716}
717
718DeclarationNode * DeclarationNode::addFunctionBody( StatementNode * body ) {
719 assert( type );
720 assert( type->kind == TypeData::Function );
721 assert( ! type->function.body );
722 type->function.body = body;
723 return this;
724}
725
726DeclarationNode * DeclarationNode::addOldDeclList( DeclarationNode * list ) {
727 assert( type );
728 assert( type->kind == TypeData::Function );
729 assert( ! type->function.oldDeclList );
730 type->function.oldDeclList = list;
731 return this;
732}
733
734DeclarationNode * DeclarationNode::setBase( TypeData * newType ) {
735 if ( type ) {
736 TypeData * prevBase = type;
737 TypeData * curBase = type->base;
738 while ( curBase != nullptr ) {
739 prevBase = curBase;
740 curBase = curBase->base;
741 } // while
742 prevBase->base = newType;
743 } else {
744 type = newType;
745 } // if
746 return this;
747}
748
749DeclarationNode * DeclarationNode::copyAttribute( DeclarationNode * a ) {
750 if ( a ) {
751 for ( Attribute *attr: reverseIterate( a->attributes ) ) {
752 attributes.push_front( attr );
753 } // for
754 a->attributes.clear();
755 } // if
756 return this;
757} // copyAttribute
758
759DeclarationNode * DeclarationNode::addPointer( DeclarationNode * p ) {
760 if ( p ) {
761 assert( p->type->kind == TypeData::Pointer || TypeData::Reference );
762 setBase( p->type );
763 p->type = nullptr;
764 copyAttribute( p );
765 delete p;
766 } // if
767 return this;
768}
769
770DeclarationNode * DeclarationNode::addArray( DeclarationNode * a ) {
771 if ( a ) {
772 assert( a->type->kind == TypeData::Array );
773 setBase( a->type );
774 a->type = nullptr;
775 copyAttribute( a );
776 delete a;
777 } // if
778 return this;
779}
780
781DeclarationNode * DeclarationNode::addNewPointer( DeclarationNode * p ) {
782 if ( p ) {
783 assert( p->type->kind == TypeData::Pointer || p->type->kind == TypeData::Reference );
784 if ( type ) {
785 switch ( type->kind ) {
786 case TypeData::Aggregate:
787 case TypeData::Enum:
788 p->type->base = new TypeData( TypeData::AggregateInst );
789 p->type->base->aggInst.aggregate = type;
790 if ( type->kind == TypeData::Aggregate ) {
791 p->type->base->aggInst.params = maybeClone( type->aggregate.actuals );
792 } // if
793 p->type->base->qualifiers |= type->qualifiers;
794 break;
795
796 default:
797 p->type->base = type;
798 } // switch
799 type = nullptr;
800 } // if
801 delete this;
802 return p;
803 } else {
804 return this;
805 } // if
806}
807
808static TypeData * findLast( TypeData * a ) {
809 assert( a );
810 TypeData * cur = a;
811 while ( cur->base ) {
812 cur = cur->base;
813 } // while
814 return cur;
815}
816
817DeclarationNode * DeclarationNode::addNewArray( DeclarationNode * a ) {
818 if ( ! a ) return this;
819 assert( a->type->kind == TypeData::Array );
820 TypeData * lastArray = findLast( a->type );
821 if ( type ) {
822 switch ( type->kind ) {
823 case TypeData::Aggregate:
824 case TypeData::Enum:
825 lastArray->base = new TypeData( TypeData::AggregateInst );
826 lastArray->base->aggInst.aggregate = type;
827 if ( type->kind == TypeData::Aggregate ) {
828 lastArray->base->aggInst.params = maybeClone( type->aggregate.actuals );
829 } // if
830 lastArray->base->qualifiers |= type->qualifiers;
831 break;
832 default:
833 lastArray->base = type;
834 } // switch
835 type = nullptr;
836 } // if
837 delete this;
838 return a;
839}
840
841DeclarationNode * DeclarationNode::addParamList( DeclarationNode * params ) {
842 TypeData * ftype = new TypeData( TypeData::Function );
843 ftype->function.params = params;
844 setBase( ftype );
845 return this;
846}
847
848static TypeData * addIdListToType( TypeData * type, DeclarationNode * ids ) {
849 if ( type ) {
850 if ( type->kind != TypeData::Function ) {
851 type->base = addIdListToType( type->base, ids );
852 } else {
853 type->function.idList = ids;
854 } // if
855 return type;
856 } else {
857 TypeData * newtype = new TypeData( TypeData::Function );
858 newtype->function.idList = ids;
859 return newtype;
860 } // if
861} // addIdListToType
862
863DeclarationNode * DeclarationNode::addIdList( DeclarationNode * ids ) {
864 type = addIdListToType( type, ids );
865 return this;
866}
867
868DeclarationNode * DeclarationNode::addInitializer( InitializerNode * init ) {
869 initializer = init;
870 return this;
871}
872
873DeclarationNode * DeclarationNode::addTypeInitializer( DeclarationNode * init ) {
874 assertf( variable.tyClass != NoTypeClass, "Called addTypeInitializer on something that isn't a type variable." );
875 variable.initializer = init;
876 return this;
877}
878
879DeclarationNode * DeclarationNode::cloneType( string * newName ) {
880 DeclarationNode * newnode = new DeclarationNode;
881 newnode->type = maybeClone( type );
882 newnode->copySpecifiers( this );
883 assert( newName );
884 newnode->name = newName;
885 return newnode;
886}
887
888DeclarationNode * DeclarationNode::cloneBaseType( DeclarationNode * o ) {
889 if ( ! o ) return nullptr;
890
891 o->copySpecifiers( this );
892 if ( type ) {
893 TypeData * srcType = type;
894
895 // search for the base type by scanning off pointers and array designators
896 while ( srcType->base ) {
897 srcType = srcType->base;
898 } // while
899
900 TypeData * newType = srcType->clone();
901 if ( newType->kind == TypeData::AggregateInst ) {
902 // don't duplicate members
903 if ( newType->aggInst.aggregate->kind == TypeData::Enum ) {
904 delete newType->aggInst.aggregate->enumeration.constants;
905 newType->aggInst.aggregate->enumeration.constants = nullptr;
906 } else {
907 assert( newType->aggInst.aggregate->kind == TypeData::Aggregate );
908 delete newType->aggInst.aggregate->aggregate.fields;
909 newType->aggInst.aggregate->aggregate.fields = nullptr;
910 } // if
911 // don't hoist twice
912 newType->aggInst.hoistType = false;
913 } // if
914
915 newType->forall = maybeClone( type->forall );
916 if ( ! o->type ) {
917 o->type = newType;
918 } else {
919 addTypeToType( newType, o->type );
920 delete newType;
921 } // if
922 } // if
923 return o;
924}
925
926DeclarationNode * DeclarationNode::extractAggregate() const {
927 if ( type ) {
928 TypeData * ret = typeextractAggregate( type );
929 if ( ret ) {
930 DeclarationNode * newnode = new DeclarationNode;
931 newnode->type = ret;
932 return newnode;
933 } // if
934 } // if
935 return nullptr;
936}
937
938void buildList( const DeclarationNode * firstNode, std::list< Declaration * > &outputList ) {
939 SemanticError errors;
940 std::back_insert_iterator< std::list< Declaration * > > out( outputList );
941
942 for ( const DeclarationNode * cur = firstNode; cur; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
943 try {
944 if ( DeclarationNode * extr = cur->extractAggregate() ) {
945 // handle the case where a structure declaration is contained within an object or type declaration
946 Declaration * decl = extr->build();
947 if ( decl ) {
948 decl->location = cur->location;
949 * out++ = decl;
950 } // if
951 delete extr;
952 } // if
953
954 Declaration * decl = cur->build();
955 if ( decl ) {
956 decl->location = cur->location;
957 * out++ = decl;
958 } // if
959 } catch( SemanticError &e ) {
960 e.set_location( cur->location );
961 errors.append( e );
962 } // try
963 } // while
964
965 if ( ! errors.isEmpty() ) {
966 throw errors;
967 } // if
968} // buildList
969
970void buildList( const DeclarationNode * firstNode, std::list< DeclarationWithType * > &outputList ) {
971 SemanticError errors;
972 std::back_insert_iterator< std::list< DeclarationWithType * > > out( outputList );
973
974 for ( const DeclarationNode * cur = firstNode; cur; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
975 try {
976 Declaration * decl = cur->build();
977 if ( decl ) {
978 if ( DeclarationWithType * dwt = dynamic_cast< DeclarationWithType * >( decl ) ) {
979 dwt->location = cur->location;
980 * out++ = dwt;
981 } else if ( StructDecl * agg = dynamic_cast< StructDecl * >( decl ) ) {
982 StructInstType * inst = new StructInstType( Type::Qualifiers(), agg->get_name() );
983 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
984 obj->location = cur->location;
985 * out++ = obj;
986 delete agg;
987 } else if ( UnionDecl * agg = dynamic_cast< UnionDecl * >( decl ) ) {
988 UnionInstType * inst = new UnionInstType( Type::Qualifiers(), agg->get_name() );
989 auto obj = new ObjectDecl( "", Type::StorageClasses(), linkage, nullptr, inst, nullptr );
990 obj->location = cur->location;
991 * out++ = obj;
992 } // if
993 } // if
994 } catch( SemanticError &e ) {
995 e.set_location( cur->location );
996 errors.append( e );
997 } // try
998 } // for
999
1000 if ( ! errors.isEmpty() ) {
1001 throw errors;
1002 } // if
1003} // buildList
1004
1005void buildTypeList( const DeclarationNode * firstNode, std::list< Type * > &outputList ) {
1006 SemanticError errors;
1007 std::back_insert_iterator< std::list< Type * > > out( outputList );
1008 const DeclarationNode * cur = firstNode;
1009
1010 while ( cur ) {
1011 try {
1012 * out++ = cur->buildType();
1013 } catch( SemanticError &e ) {
1014 e.set_location( cur->location );
1015 errors.append( e );
1016 } // try
1017 cur = dynamic_cast< DeclarationNode * >( cur->get_next() );
1018 } // while
1019
1020 if ( ! errors.isEmpty() ) {
1021 throw errors;
1022 } // if
1023} // buildTypeList
1024
1025Declaration * DeclarationNode::build() const {
1026 if ( ! error.empty() ) throw SemanticError( error + " in declaration of ", this );
1027
1028 if ( asmStmt ) {
1029 return new AsmDecl( strict_dynamic_cast<AsmStmt *>( asmStmt->build() ) );
1030 } // if
1031
1032 if ( variable.tyClass != NoTypeClass ) {
1033 // otype is internally converted to dtype + otype parameters
1034 static const TypeDecl::Kind kindMap[] = { TypeDecl::Dtype, TypeDecl::Dtype, TypeDecl::Ftype, TypeDecl::Ttype };
1035 assertf( sizeof(kindMap)/sizeof(kindMap[0]) == NoTypeClass, "DeclarationNode::build: kindMap is out of sync." );
1036 assertf( variable.tyClass < sizeof(kindMap)/sizeof(kindMap[0]), "Variable's tyClass is out of bounds." );
1037 TypeDecl * ret = new TypeDecl( *name, Type::StorageClasses(), nullptr, kindMap[ variable.tyClass ], variable.tyClass == Otype, variable.initializer ? variable.initializer->buildType() : nullptr );
1038 buildList( variable.assertions, ret->get_assertions() );
1039 return ret;
1040 } // if
1041
1042 if ( type ) {
1043 // Function specifiers can only appear on a function definition/declaration.
1044 //
1045 // inline _Noreturn int f(); // allowed
1046 // inline _Noreturn int g( int i ); // allowed
1047 // inline _Noreturn int i; // disallowed
1048 if ( type->kind != TypeData::Function && funcSpecs.any() ) {
1049 throw SemanticError( "invalid function specifier for ", this );
1050 } // if
1051 return buildDecl( type, name ? *name : string( "" ), storageClasses, maybeBuild< Expression >( bitfieldWidth ), funcSpecs, linkage, asmName, maybeBuild< Initializer >(initializer), attributes )->set_extension( extension );
1052 } // if
1053
1054 // SUE's cannot have function specifiers, either
1055 //
1056 // inlne _Noreturn struct S { ... }; // disallowed
1057 // inlne _Noreturn enum E { ... }; // disallowed
1058 if ( funcSpecs.any() ) {
1059 throw SemanticError( "invalid function specifier for ", this );
1060 } // if
1061 assertf( name, "ObjectDecl must a have name\n" );
1062 return (new ObjectDecl( *name, storageClasses, linkage, maybeBuild< Expression >( bitfieldWidth ), nullptr, maybeBuild< Initializer >( initializer ) ))->set_asmName( asmName )->set_extension( extension );
1063}
1064
1065Type * DeclarationNode::buildType() const {
1066 assert( type );
1067
1068 if ( attr.expr ) {
1069 return new AttrType( buildQualifiers( type ), *name, attr.expr->build(), attributes );
1070 } else if ( attr.type ) {
1071 return new AttrType( buildQualifiers( type ), *name, attr.type->buildType(), attributes );
1072 } // if
1073
1074 switch ( type->kind ) {
1075 case TypeData::Enum:
1076 case TypeData::Aggregate: {
1077 ReferenceToType * ret = buildComAggInst( type, attributes, linkage );
1078 buildList( type->aggregate.actuals, ret->get_parameters() );
1079 return ret;
1080 }
1081 case TypeData::Symbolic: {
1082 TypeInstType * ret = new TypeInstType( buildQualifiers( type ), *type->symbolic.name, false, attributes );
1083 buildList( type->symbolic.actuals, ret->get_parameters() );
1084 return ret;
1085 }
1086 default:
1087 Type * simpletypes = typebuild( type );
1088 simpletypes->get_attributes() = attributes; // copy because member is const
1089 return simpletypes;
1090 } // switch
1091}
1092
1093// Local Variables: //
1094// tab-width: 4 //
1095// mode: c++ //
1096// compile-command: "make install" //
1097// End: //
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