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source: src/ResolvExpr/Resolver.cc @ c857ad3

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc

Last change on this file since c857ad3 was 32b8144, checked in by Rob Schluntz <rschlunt@…>, 8 years ago
resolve case labels and case ranges
Property mode set to `100644`
File size: 21.7 KB

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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	// Resolver.cc --
8	//
9	// Author : Richard C. Bilson
10	// Created On : Sun May 17 12:17:01 2015
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Tue Jul 12 17:45:42 2016
13	// Update Count : 204
14	//
15
16	#include "Resolver.h"
17	#include "AlternativeFinder.h"
18	#include "Alternative.h"
19	#include "RenameVars.h"
20	#include "ResolveTypeof.h"
21	#include "typeops.h"
22	#include "SynTree/Statement.h"
23	#include "SynTree/Type.h"
24	#include "SynTree/Expression.h"
25	#include "SynTree/Initializer.h"
26	#include "SymTab/Indexer.h"
27	#include "SymTab/Autogen.h"
28	#include "Common/utility.h"
29	#include "InitTweak/InitTweak.h"
30
31	#include <iostream>
32	using namespace std;
33
34	namespace ResolvExpr {
35	class Resolver final : public SymTab::Indexer {
36	public:
37	Resolver() : SymTab::Indexer( false ) {}
38	Resolver( const SymTab:: Indexer & other ) : SymTab::Indexer( other ) {
39	if ( const Resolver * res = dynamic_cast< const Resolver * >( &other ) ) {
40	functionReturn = res->functionReturn;
41	initContext = res->initContext;
42	inEnumDecl = res->inEnumDecl;
43	}
44	}
45
46	typedef SymTab::Indexer Parent;
47	using Parent::visit;
48	virtual void visit( FunctionDecl *functionDecl ) override;
49	virtual void visit( ObjectDecl *functionDecl ) override;
50	virtual void visit( TypeDecl *typeDecl ) override;
51	virtual void visit( EnumDecl * enumDecl ) override;
52
53	virtual void visit( ArrayType * at ) override;
54	virtual void visit( PointerType * at ) override;
55
56	virtual void visit( ExprStmt *exprStmt ) override;
57	virtual void visit( AsmExpr *asmExpr ) override;
58	virtual void visit( AsmStmt *asmStmt ) override;
59	virtual void visit( IfStmt *ifStmt ) override;
60	virtual void visit( WhileStmt *whileStmt ) override;
61	virtual void visit( ForStmt *forStmt ) override;
62	virtual void visit( SwitchStmt *switchStmt ) override;
63	virtual void visit( CaseStmt *caseStmt ) override;
64	virtual void visit( BranchStmt *branchStmt ) override;
65	virtual void visit( ReturnStmt *returnStmt ) override;
66
67	virtual void visit( SingleInit *singleInit ) override;
68	virtual void visit( ListInit *listInit ) override;
69	virtual void visit( ConstructorInit *ctorInit ) override;
70	private:
71	typedef std::list< Initializer * >::iterator InitIterator;
72
73	template< typename PtrType >
74	void handlePtrType( PtrType * type );
75
76	void resolveAggrInit( ReferenceToType *, InitIterator &, InitIterator & );
77	void resolveSingleAggrInit( Declaration *, InitIterator &, InitIterator &, TypeSubstitution sub );
78	void fallbackInit( ConstructorInit * ctorInit );
79
80	Type * functionReturn = nullptr;
81	Type *initContext = nullptr;
82	bool inEnumDecl = false;
83	};
84
85	void resolve( std::list< Declaration * > translationUnit ) {
86	Resolver resolver;
87	acceptAll( translationUnit, resolver );
88	}
89
90	Expression resolveInVoidContext( Expression expr, const SymTab::Indexer &indexer ) {
91	TypeEnvironment env;
92	return resolveInVoidContext( expr, indexer, env );
93	}
94
95
96	namespace {
97	void finishExpr( Expression *expr, const TypeEnvironment &env ) {
98	expr->set_env( new TypeSubstitution );
99	env.makeSubstitution( *expr->get_env() );
100	}
101	} // namespace
102
103	Expression findVoidExpression( Expression untyped, const SymTab::Indexer &indexer ) {
104	global_renamer.reset();
105	TypeEnvironment env;
106	Expression *newExpr = resolveInVoidContext( untyped, indexer, env );
107	finishExpr( newExpr, env );
108	return newExpr;
109	}
110
111	namespace {
112	Expression findSingleExpression( Expression untyped, const SymTab::Indexer &indexer ) {
113	TypeEnvironment env;
114	AlternativeFinder finder( indexer, env );
115	finder.find( untyped );
116	#if 0
117	if ( finder.get_alternatives().size() != 1 ) {
118	std::cout << "untyped expr is ";
119	untyped->print( std::cout );
120	std::cout << std::endl << "alternatives are:";
121	for ( std::list< Alternative >::const_iterator i = finder.get_alternatives().begin(); i != finder.get_alternatives().end(); ++i ) {
122	i->print( std::cout );
123	} // for
124	} // if
125	#endif
126	assert( finder.get_alternatives().size() == 1 );
127	Alternative &choice = finder.get_alternatives().front();
128	Expression *newExpr = choice.expr->clone();
129	finishExpr( newExpr, choice.env );
130	return newExpr;
131	}
132
133	bool isIntegralType( Type *type ) {
134	if ( dynamic_cast< EnumInstType * >( type ) ) {
135	return true;
136	} else if ( BasicType bt = dynamic_cast< BasicType >( type ) ) {
137	return bt->isInteger();
138	} else if ( dynamic_cast< ZeroType* >( type ) != nullptr \|\| dynamic_cast< OneType* >( type ) != nullptr ) {
139	return true;
140	} else {
141	return false;
142	} // if
143	}
144
145	Expression findIntegralExpression( Expression untyped, const SymTab::Indexer &indexer ) {
146	TypeEnvironment env;
147	AlternativeFinder finder( indexer, env );
148	finder.find( untyped );
149	#if 0
150	if ( finder.get_alternatives().size() != 1 ) {
151	std::cout << "untyped expr is ";
152	untyped->print( std::cout );
153	std::cout << std::endl << "alternatives are:";
154	for ( std::list< Alternative >::const_iterator i = finder.get_alternatives().begin(); i != finder.get_alternatives().end(); ++i ) {
155	i->print( std::cout );
156	} // for
157	} // if
158	#endif
159	Expression *newExpr = 0;
160	const TypeEnvironment *newEnv = 0;
161	for ( AltList::const_iterator i = finder.get_alternatives().begin(); i != finder.get_alternatives().end(); ++i ) {
162	if ( i->expr->get_result()->size() == 1 && isIntegralType( i->expr->get_result() ) ) {
163	if ( newExpr ) {
164	throw SemanticError( "Too many interpretations for case control expression", untyped );
165	} else {
166	newExpr = i->expr->clone();
167	newEnv = &i->env;
168	} // if
169	} // if
170	} // for
171	if ( ! newExpr ) {
172	throw SemanticError( "No interpretations for case control expression", untyped );
173	} // if
174	finishExpr( newExpr, *newEnv );
175	return newExpr;
176	}
177
178	}
179
180	void Resolver::visit( ObjectDecl *objectDecl ) {
181	Type new_type = resolveTypeof( objectDecl->get_type(), this );
182	objectDecl->set_type( new_type );
183	// To handle initialization of routine pointers, e.g., int (*fp)(int) = foo(), means that class-variable
184	// initContext is changed multiple time because the LHS is analysed twice. The second analysis changes
185	// initContext because of a function type can contain object declarations in the return and parameter types. So
186	// each value of initContext is retained, so the type on the first analysis is preserved and used for selecting
187	// the RHS.
188	Type *temp = initContext;
189	initContext = new_type;
190	if ( inEnumDecl && dynamic_cast< EnumInstType * >( initContext ) ) {
191	// enumerator initializers should not use the enum type to initialize, since
192	// the enum type is still incomplete at this point. Use signed int instead.
193	initContext = new BasicType( Type::Qualifiers(), BasicType::SignedInt );
194	}
195	Parent::visit( objectDecl );
196	if ( inEnumDecl && dynamic_cast< EnumInstType * >( initContext ) ) {
197	// delete newly created signed int type
198	delete initContext;
199	}
200	initContext = temp;
201	}
202
203	template< typename PtrType >
204	void Resolver::handlePtrType( PtrType * type ) {
205	if ( type->get_dimension() ) {
206	CastExpr *castExpr = new CastExpr( type->get_dimension(), SymTab::SizeType->clone() );
207	Expression newExpr = findSingleExpression( castExpr, this );
208	delete type->get_dimension();
209	type->set_dimension( newExpr );
210	}
211	}
212
213	void Resolver::visit( ArrayType * at ) {
214	handlePtrType( at );
215	Parent::visit( at );
216	}
217
218	void Resolver::visit( PointerType * pt ) {
219	handlePtrType( pt );
220	Parent::visit( pt );
221	}
222
223	void Resolver::visit( TypeDecl *typeDecl ) {
224	if ( typeDecl->get_base() ) {
225	Type new_type = resolveTypeof( typeDecl->get_base(), this );
226	typeDecl->set_base( new_type );
227	} // if
228	Parent::visit( typeDecl );
229	}
230
231	void Resolver::visit( FunctionDecl *functionDecl ) {
232	#if 0
233	std::cout << "resolver visiting functiondecl ";
234	functionDecl->print( std::cout );
235	std::cout << std::endl;
236	#endif
237	Type new_type = resolveTypeof( functionDecl->get_type(), this );
238	functionDecl->set_type( new_type );
239	ValueGuard< Type * > oldFunctionReturn( functionReturn );
240	functionReturn = ResolvExpr::extractResultType( functionDecl->get_functionType() );
241	Parent::visit( functionDecl );
242	}
243
244	void Resolver::visit( EnumDecl * enumDecl ) {
245	// in case we decide to allow nested enums
246	ValueGuard< bool > oldInEnumDecl( inEnumDecl );
247	inEnumDecl = true;
248	Parent::visit( enumDecl );
249	}
250
251	void Resolver::visit( ExprStmt *exprStmt ) {
252	assertf( exprStmt->get_expr(), "ExprStmt has null Expression in resolver" );
253	Expression newExpr = findVoidExpression( exprStmt->get_expr(), this );
254	delete exprStmt->get_expr();
255	exprStmt->set_expr( newExpr );
256	}
257
258	void Resolver::visit( AsmExpr *asmExpr ) {
259	Expression newExpr = findVoidExpression( asmExpr->get_operand(), this );
260	delete asmExpr->get_operand();
261	asmExpr->set_operand( newExpr );
262	if ( asmExpr->get_inout() ) {
263	newExpr = findVoidExpression( asmExpr->get_inout(), *this );
264	delete asmExpr->get_inout();
265	asmExpr->set_inout( newExpr );
266	} // if
267	}
268
269	void Resolver::visit( AsmStmt *asmStmt ) {
270	acceptAll( asmStmt->get_input(), *this);
271	acceptAll( asmStmt->get_output(), *this);
272	}
273
274	void Resolver::visit( IfStmt *ifStmt ) {
275	Expression newExpr = findSingleExpression( ifStmt->get_condition(), this );
276	delete ifStmt->get_condition();
277	ifStmt->set_condition( newExpr );
278	Parent::visit( ifStmt );
279	}
280
281	void Resolver::visit( WhileStmt *whileStmt ) {
282	Expression newExpr = findSingleExpression( whileStmt->get_condition(), this );
283	delete whileStmt->get_condition();
284	whileStmt->set_condition( newExpr );
285	Parent::visit( whileStmt );
286	}
287
288	void Resolver::visit( ForStmt *forStmt ) {
289	Parent::visit( forStmt );
290
291	if ( forStmt->get_condition() ) {
292	Expression * newExpr = findSingleExpression( forStmt->get_condition(), *this );
293	delete forStmt->get_condition();
294	forStmt->set_condition( newExpr );
295	} // if
296
297	if ( forStmt->get_increment() ) {
298	Expression * newExpr = findVoidExpression( forStmt->get_increment(), *this );
299	delete forStmt->get_increment();
300	forStmt->set_increment( newExpr );
301	} // if
302	}
303
304	void Resolver::visit( SwitchStmt *switchStmt ) {
305	ValueGuard< Type * > oldInitContext( initContext );
306	Expression *newExpr;
307	newExpr = findIntegralExpression( switchStmt->get_condition(), *this );
308	delete switchStmt->get_condition();
309	switchStmt->set_condition( newExpr );
310
311	initContext = newExpr->get_result();
312	Parent::visit( switchStmt );
313	}
314
315	void Resolver::visit( CaseStmt *caseStmt ) {
316	if ( caseStmt->get_condition() ) {
317	assert( initContext );
318	CastExpr * castExpr = new CastExpr( caseStmt->get_condition(), initContext->clone() );
319	Expression * newExpr = findSingleExpression( castExpr, *this );
320	castExpr = safe_dynamic_cast< CastExpr * >( newExpr );
321	caseStmt->set_condition( castExpr->get_arg() );
322	castExpr->set_arg( nullptr );
323	delete castExpr;
324	}
325	Parent::visit( caseStmt );
326	}
327
328	void Resolver::visit( BranchStmt *branchStmt ) {
329	// must resolve the argument for a computed goto
330	if ( branchStmt->get_type() == BranchStmt::Goto ) { // check for computed goto statement
331	if ( Expression * arg = branchStmt->get_computedTarget() ) {
332	VoidType v = Type::Qualifiers(); // cast to void * for the alternative finder
333	PointerType pt( Type::Qualifiers(), v.clone() );
334	CastExpr * castExpr = new CastExpr( arg, pt.clone() );
335	Expression * newExpr = findSingleExpression( castExpr, *this ); // find best expression
336	branchStmt->set_target( newExpr );
337	} // if
338	} // if
339	}
340
341	void Resolver::visit( ReturnStmt *returnStmt ) {
342	if ( returnStmt->get_expr() ) {
343	CastExpr *castExpr = new CastExpr( returnStmt->get_expr(), functionReturn->clone() );
344	Expression newExpr = findSingleExpression( castExpr, this );
345	delete castExpr;
346	returnStmt->set_expr( newExpr );
347	} // if
348	}
349
350	template< typename T >
351	bool isCharType( T t ) {
352	if ( BasicType * bt = dynamic_cast< BasicType * >( t ) ) {
353	return bt->get_kind() == BasicType::Char \|\| bt->get_kind() == BasicType::SignedChar \|\|
354	bt->get_kind() == BasicType::UnsignedChar;
355	}
356	return false;
357	}
358
359	void Resolver::visit( SingleInit *singleInit ) {
360	if ( singleInit->get_value() ) {
361	#if 0
362	if (NameExpr * ne = dynamic_cast<NameExpr*>(singleInit->get_value())) {
363	string n = ne->get_name();
364	if (n == "0") {
365	initContext = new BasicType(Type::Qualifiers(),
366	BasicType::SignedInt);
367	} else {
368	DeclarationWithType * decl = lookupId( n );
369	initContext = decl->get_type();
370	}
371	} else if (ConstantExpr * e =
372	dynamic_cast<ConstantExpr*>(singleInit->get_value())) {
373	Constant *c = e->get_constant();
374	initContext = c->get_type();
375	} else {
376	assert(0);
377	}
378	#endif
379	CastExpr *castExpr = new CastExpr( singleInit->get_value(), initContext->clone() );
380	Expression newExpr = findSingleExpression( castExpr, this );
381	delete castExpr;
382	singleInit->set_value( newExpr );
383
384	// check if initializing type is char[]
385	if ( ArrayType * at = dynamic_cast< ArrayType * >( initContext ) ) {
386	if ( isCharType( at->get_base() ) ) {
387	// check if the resolved type is char *
388	if ( PointerType * pt = dynamic_cast< PointerType *>( newExpr->get_result() ) ) {
389	if ( isCharType( pt->get_base() ) ) {
390	// strip cast if we're initializing a char[] with a char *, e.g. char x[] = "hello";
391	CastExpr ce = dynamic_cast< CastExpr >( newExpr );
392	singleInit->set_value( ce->get_arg() );
393	ce->set_arg( NULL );
394	delete ce;
395	}
396	}
397	}
398	}
399	} // if
400	// singleInit->get_value()->accept( *this );
401	}
402
403	template< typename AggrInst >
404	TypeSubstitution makeGenericSubstitutuion( AggrInst * inst ) {
405	assert( inst );
406	assert( inst->get_baseParameters() );
407	std::list< TypeDecl * > baseParams = *inst->get_baseParameters();
408	std::list< Expression * > typeSubs = inst->get_parameters();
409	TypeSubstitution subs( baseParams.begin(), baseParams.end(), typeSubs.begin() );
410	return subs;
411	}
412
413	ReferenceToType * isStructOrUnion( Type * type ) {
414	if ( StructInstType * sit = dynamic_cast< StructInstType * >( type ) ) {
415	return sit;
416	} else if ( UnionInstType * uit = dynamic_cast< UnionInstType * >( type ) ) {
417	return uit;
418	}
419	return nullptr;
420	}
421
422	void Resolver::resolveSingleAggrInit( Declaration * dcl, InitIterator & init, InitIterator & initEnd, TypeSubstitution sub ) {
423	DeclarationWithType * dt = dynamic_cast< DeclarationWithType * >( dcl );
424	assert( dt );
425	// need to substitute for generic types, so that casts are to concrete types
426	initContext = dt->get_type()->clone();
427	sub.apply( initContext );
428
429	try {
430	if ( init == initEnd ) return; // stop when there are no more initializers
431	(init)->accept( this );
432	++init; // made it past an initializer
433	} catch( SemanticError & ) {
434	// need to delve deeper, if you can
435	if ( ReferenceToType * type = isStructOrUnion( initContext ) ) {
436	resolveAggrInit( type, init, initEnd );
437	} else {
438	// member is not an aggregate type, so can't go any deeper
439
440	// might need to rethink what is being thrown
441	throw;
442	} // if
443	}
444	}
445
446	void Resolver::resolveAggrInit( ReferenceToType * inst, InitIterator & init, InitIterator & initEnd ) {
447	if ( StructInstType * sit = dynamic_cast< StructInstType * >( inst ) ) {
448	TypeSubstitution sub = makeGenericSubstitutuion( sit );
449	StructDecl * st = sit->get_baseStruct();
450	if(st->get_members().empty()) return;
451	// want to resolve each initializer to the members of the struct,
452	// but if there are more initializers than members we should stop
453	list< Declaration * >::iterator it = st->get_members().begin();
454	for ( ; it != st->get_members().end(); ++it) {
455	resolveSingleAggrInit( *it, init, initEnd, sub );
456	}
457	} else if ( UnionInstType * uit = dynamic_cast< UnionInstType * >( inst ) ) {
458	TypeSubstitution sub = makeGenericSubstitutuion( uit );
459	UnionDecl * un = uit->get_baseUnion();
460	if(un->get_members().empty()) return;
461	// only resolve to the first member of a union
462	resolveSingleAggrInit( *un->get_members().begin(), init, initEnd, sub );
463	} // if
464	}
465
466	void Resolver::visit( ListInit * listInit ) {
467	InitIterator iter = listInit->begin();
468	InitIterator end = listInit->end();
469
470	if ( ArrayType * at = dynamic_cast< ArrayType * >( initContext ) ) {
471	// resolve each member to the base type of the array
472	for ( ; iter != end; ++iter ) {
473	initContext = at->get_base();
474	(iter)->accept( this );
475	} // for
476	} else if ( TupleType * tt = dynamic_cast< TupleType * > ( initContext ) ) {
477	for ( Type * t : *tt ) {
478	if ( iter == end ) break;
479	initContext = t;
480	(iter++)->accept( this );
481	}
482	} else if ( ReferenceToType * type = isStructOrUnion( initContext ) ) {
483	resolveAggrInit( type, iter, end );
484	} else if ( TypeInstType * tt = dynamic_cast< TypeInstType * >( initContext ) ) {
485	Type * base = tt->get_baseType()->get_base();
486	if ( base ) {
487	// know the implementation type, so try using that as the initContext
488	initContext = base;
489	visit( listInit );
490	} else {
491	// missing implementation type -- might be an unknown type variable, so try proceeding with the current init context
492	Parent::visit( listInit );
493	}
494	} else {
495	assert( dynamic_cast< BasicType * >( initContext ) \|\| dynamic_cast< PointerType * >( initContext )
496	\|\| dynamic_cast< ZeroType * >( initContext ) \|\| dynamic_cast< OneType * >( initContext ) \|\| dynamic_cast < EnumInstType * > ( initContext ) );
497	// basic types are handled here
498	Parent::visit( listInit );
499	}
500
501	#if 0
502	if ( ArrayType at = dynamic_cast<ArrayType>(initContext) ) {
503	std::list<Initializer *>::iterator iter( listInit->begin_initializers() );
504	for ( ; iter != listInit->end_initializers(); ++iter ) {
505	initContext = at->get_base();
506	(iter)->accept( this );
507	} // for
508	} else if ( StructInstType st = dynamic_cast<StructInstType>(initContext) ) {
509	StructDecl *baseStruct = st->get_baseStruct();
510	std::list<Declaration *>::iterator iter1( baseStruct->get_members().begin() );
511	std::list<Initializer *>::iterator iter2( listInit->begin_initializers() );
512	for ( ; iter1 != baseStruct->get_members().end() && iter2 != listInit->end_initializers(); ++iter2 ) {
513	if ( (*iter2)->get_designators().empty() ) {
514	DeclarationWithType dt = dynamic_cast<DeclarationWithType >( *iter1 );
515	initContext = dt->get_type();
516	(iter2)->accept( this );
517	++iter1;
518	} else {
519	StructDecl *st = baseStruct;
520	iter1 = st->get_members().begin();
521	std::list<Expression >::iterator iter3( (iter2)->get_designators().begin() );
522	for ( ; iter3 != (*iter2)->get_designators().end(); ++iter3 ) {
523	NameExpr key = dynamic_cast<NameExpr >( *iter3 );
524	assert( key );
525	for ( ; iter1 != st->get_members().end(); ++iter1 ) {
526	if ( key->get_name() == (*iter1)->get_name() ) {
527	(*iter1)->print( cout );
528	cout << key->get_name() << endl;
529	ObjectDecl fred = dynamic_cast<ObjectDecl >( *iter1 );
530	assert( fred );
531	StructInstType mary = dynamic_cast<StructInstType>( fred->get_type() );
532	assert( mary );
533	st = mary->get_baseStruct();
534	iter1 = st->get_members().begin();
535	break;
536	} // if
537	} // for
538	} // for
539	ObjectDecl fred = dynamic_cast<ObjectDecl >( *iter1 );
540	assert( fred );
541	initContext = fred->get_type();
542	(listInit->begin_initializers())->accept( this );
543	} // if
544	} // for
545	} else if ( UnionInstType st = dynamic_cast<UnionInstType>(initContext) ) {
546	DeclarationWithType dt = dynamic_cast<DeclarationWithType >( *st->get_baseUnion()->get_members().begin() );
547	initContext = dt->get_type();
548	(listInit->begin_initializers())->accept( this );
549	} // if
550	#endif
551	}
552
553	// ConstructorInit - fall back on C-style initializer
554	void Resolver::fallbackInit( ConstructorInit * ctorInit ) {
555	// could not find valid constructor, or found an intrinsic constructor
556	// fall back on C-style initializer
557	delete ctorInit->get_ctor();
558	ctorInit->set_ctor( NULL );
559	delete ctorInit->get_dtor();
560	ctorInit->set_dtor( NULL );
561	maybeAccept( ctorInit->get_init(), *this );
562	}
563
564	// needs to be callable from outside the resolver, so this is a standalone function
565	void resolveCtorInit( ConstructorInit * ctorInit, const SymTab::Indexer & indexer ) {
566	assert( ctorInit );
567	Resolver resolver( indexer );
568	ctorInit->accept( resolver );
569	}
570
571	void resolveStmtExpr( StmtExpr * stmtExpr, const SymTab::Indexer & indexer ) {
572	assert( stmtExpr );
573	Resolver resolver( indexer );
574	stmtExpr->accept( resolver );
575	}
576
577	void Resolver::visit( ConstructorInit *ctorInit ) {
578	// xxx - fallback init has been removed => remove fallbackInit function and remove complexity from FixInit and remove C-init from ConstructorInit
579	maybeAccept( ctorInit->get_ctor(), *this );
580	maybeAccept( ctorInit->get_dtor(), *this );
581
582	// found a constructor - can get rid of C-style initializer
583	delete ctorInit->get_init();
584	ctorInit->set_init( NULL );
585
586	// intrinsic single parameter constructors and destructors do nothing. Since this was
587	// implicitly generated, there's no way for it to have side effects, so get rid of it
588	// to clean up generated code.
589	if ( InitTweak::isIntrinsicSingleArgCallStmt( ctorInit->get_ctor() ) ) {
590	delete ctorInit->get_ctor();
591	ctorInit->set_ctor( NULL );
592	}
593
594	if ( InitTweak::isIntrinsicSingleArgCallStmt( ctorInit->get_dtor() ) ) {
595	delete ctorInit->get_dtor();
596	ctorInit->set_dtor( NULL );
597	}
598
599	// xxx - todo -- what about arrays?
600	// if ( dtor == NULL && InitTweak::isIntrinsicCallStmt( ctorInit->get_ctor() ) ) {
601	// // can reduce the constructor down to a SingleInit using the
602	// // second argument from the ctor call, since
603	// delete ctorInit->get_ctor();
604	// ctorInit->set_ctor( NULL );
605
606	// Expression * arg =
607	// ctorInit->set_init( new SingleInit( arg ) );
608	// }
609	}
610	} // namespace ResolvExpr
611
612	// Local Variables: //
613	// tab-width: 4 //
614	// mode: c++ //
615	// compile-command: "make install" //
616	// End: //

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