source: src/ResolvExpr/Resolver.cc@ e472d54

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 e472d54 was a4ca48c, checked in by Rob Schluntz <rschlunt@…>, 8 years ago

Convert Resolver to PassVisitor
  • Property mode set to 100644
File size: 19.9 KB
RevLine 
[a32b204]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//
[71f4e4f]7// Resolver.cc --
[a32b204]8//
9// Author : Richard C. Bilson
10// Created On : Sun May 17 12:17:01 2015
[cbce272]11// Last Modified By : Andrew Beach
12// Last Modified On : Tus Aug 8 16:06:00 2017
13// Update Count : 212
[a32b204]14//
15
[ea6332d]16#include <stddef.h> // for NULL
[e3e16bc]17#include <cassert> // for strict_dynamic_cast, assert
[ea6332d]18#include <memory> // for allocator, allocator_traits<...
19#include <tuple> // for get
20
21#include "Alternative.h" // for Alternative, AltList
22#include "AlternativeFinder.h" // for AlternativeFinder, resolveIn...
[a4ca48c]23#include "Common/PassVisitor.h" // for PassVisitor
[ea6332d]24#include "Common/SemanticError.h" // for SemanticError
25#include "Common/utility.h" // for ValueGuard, group_iterate
26#include "CurrentObject.h" // for CurrentObject
27#include "InitTweak/InitTweak.h" // for isIntrinsicSingleArgCallStmt
28#include "RenameVars.h" // for RenameVars, global_renamer
29#include "ResolvExpr/TypeEnvironment.h" // for TypeEnvironment
30#include "ResolveTypeof.h" // for resolveTypeof
[e4d829b]31#include "Resolver.h"
[ea6332d]32#include "SymTab/Autogen.h" // for SizeType
33#include "SymTab/Indexer.h" // for Indexer
34#include "SynTree/Declaration.h" // for ObjectDecl, TypeDecl, Declar...
35#include "SynTree/Expression.h" // for Expression, CastExpr, InitExpr
36#include "SynTree/Initializer.h" // for ConstructorInit, SingleInit
37#include "SynTree/Statement.h" // for ForStmt, Statement, BranchStmt
38#include "SynTree/Type.h" // for Type, BasicType, PointerType
39#include "SynTree/TypeSubstitution.h" // for TypeSubstitution
40#include "SynTree/Visitor.h" // for acceptAll, maybeAccept
41#include "typeops.h" // for extractResultType
[51b73452]42
[d9a0e76]43using namespace std;
[51b73452]44
[d9a0e76]45namespace ResolvExpr {
[a4ca48c]46 struct Resolver final : public WithIndexer, public WithGuards, public WithVisitorRef<Resolver>, public WithShortCircuiting {
47 Resolver() {}
48 Resolver( const SymTab::Indexer & other ) {
49 indexer = other;
[1d2b64f]50 }
[71f4e4f]51
[a4ca48c]52 void previsit( FunctionDecl *functionDecl );
53 void postvisit( FunctionDecl *functionDecl );
54 void previsit( ObjectDecl *functionDecl );
55 void previsit( TypeDecl *typeDecl );
56 void previsit( EnumDecl * enumDecl );
57
58 void previsit( ArrayType * at );
59 void previsit( PointerType * at );
60
61 void previsit( ExprStmt *exprStmt );
62 void previsit( AsmExpr *asmExpr );
63 void previsit( AsmStmt *asmStmt );
64 void previsit( IfStmt *ifStmt );
65 void previsit( WhileStmt *whileStmt );
66 void previsit( ForStmt *forStmt );
67 void previsit( SwitchStmt *switchStmt );
68 void previsit( CaseStmt *caseStmt );
69 void previsit( BranchStmt *branchStmt );
70 void previsit( ReturnStmt *returnStmt );
71 void previsit( ThrowStmt *throwStmt );
72 void previsit( CatchStmt *catchStmt );
73
74 void previsit( SingleInit *singleInit );
75 void previsit( ListInit *listInit );
76 void previsit( ConstructorInit *ctorInit );
[a32b204]77 private:
[94b4364]78 typedef std::list< Initializer * >::iterator InitIterator;
79
[40e636a]80 template< typename PtrType >
81 void handlePtrType( PtrType * type );
82
[30b65d8]83 void resolveAggrInit( ReferenceToType *, InitIterator &, InitIterator & );
84 void resolveSingleAggrInit( Declaration *, InitIterator &, InitIterator &, TypeSubstitution sub );
[f1e012b]85 void fallbackInit( ConstructorInit * ctorInit );
[b726084]86
[77971f6]87 Type * functionReturn = nullptr;
[e4d829b]88 CurrentObject currentObject = nullptr;
[a436947]89 bool inEnumDecl = false;
[a32b204]90 };
[d9a0e76]91
[a32b204]92 void resolve( std::list< Declaration * > translationUnit ) {
[a4ca48c]93 PassVisitor<Resolver> resolver;
[a32b204]94 acceptAll( translationUnit, resolver );
[d9a0e76]95 }
96
[a4ca48c]97 // used in resolveTypeof
[a32b204]98 Expression *resolveInVoidContext( Expression *expr, const SymTab::Indexer &indexer ) {
99 TypeEnvironment env;
100 return resolveInVoidContext( expr, indexer, env );
[d9a0e76]101 }
[a32b204]102
103 namespace {
104 void finishExpr( Expression *expr, const TypeEnvironment &env ) {
105 expr->set_env( new TypeSubstitution );
106 env.makeSubstitution( *expr->get_env() );
107 }
[db4ecc5]108 } // namespace
[a32b204]109
[db4ecc5]110 Expression *findVoidExpression( Expression *untyped, const SymTab::Indexer &indexer ) {
111 global_renamer.reset();
112 TypeEnvironment env;
113 Expression *newExpr = resolveInVoidContext( untyped, indexer, env );
114 finishExpr( newExpr, env );
115 return newExpr;
116 }
[71f4e4f]117
[db4ecc5]118 namespace {
[a32b204]119 Expression *findSingleExpression( Expression *untyped, const SymTab::Indexer &indexer ) {
120 TypeEnvironment env;
121 AlternativeFinder finder( indexer, env );
122 finder.find( untyped );
[d9a0e76]123#if 0
[a32b204]124 if ( finder.get_alternatives().size() != 1 ) {
125 std::cout << "untyped expr is ";
126 untyped->print( std::cout );
127 std::cout << std::endl << "alternatives are:";
128 for ( std::list< Alternative >::const_iterator i = finder.get_alternatives().begin(); i != finder.get_alternatives().end(); ++i ) {
129 i->print( std::cout );
130 } // for
131 } // if
[d9a0e76]132#endif
[0b150ec]133 assertf( finder.get_alternatives().size() == 1, "findSingleExpression: must have exactly one alternative at the end." );
[a32b204]134 Alternative &choice = finder.get_alternatives().front();
135 Expression *newExpr = choice.expr->clone();
136 finishExpr( newExpr, choice.env );
137 return newExpr;
138 }
[d9a0e76]139
[a32b204]140 bool isIntegralType( Type *type ) {
141 if ( dynamic_cast< EnumInstType * >( type ) ) {
142 return true;
143 } else if ( BasicType *bt = dynamic_cast< BasicType * >( type ) ) {
144 return bt->isInteger();
[89e6ffc]145 } else if ( dynamic_cast< ZeroType* >( type ) != nullptr || dynamic_cast< OneType* >( type ) != nullptr ) {
146 return true;
[a32b204]147 } else {
148 return false;
149 } // if
150 }
[71f4e4f]151
[a32b204]152 Expression *findIntegralExpression( Expression *untyped, const SymTab::Indexer &indexer ) {
153 TypeEnvironment env;
154 AlternativeFinder finder( indexer, env );
155 finder.find( untyped );
[d9a0e76]156#if 0
[a32b204]157 if ( finder.get_alternatives().size() != 1 ) {
158 std::cout << "untyped expr is ";
159 untyped->print( std::cout );
160 std::cout << std::endl << "alternatives are:";
161 for ( std::list< Alternative >::const_iterator i = finder.get_alternatives().begin(); i != finder.get_alternatives().end(); ++i ) {
162 i->print( std::cout );
163 } // for
164 } // if
[d9a0e76]165#endif
[a32b204]166 Expression *newExpr = 0;
167 const TypeEnvironment *newEnv = 0;
168 for ( AltList::const_iterator i = finder.get_alternatives().begin(); i != finder.get_alternatives().end(); ++i ) {
[906e24d]169 if ( i->expr->get_result()->size() == 1 && isIntegralType( i->expr->get_result() ) ) {
[a32b204]170 if ( newExpr ) {
171 throw SemanticError( "Too many interpretations for case control expression", untyped );
172 } else {
173 newExpr = i->expr->clone();
174 newEnv = &i->env;
175 } // if
176 } // if
177 } // for
178 if ( ! newExpr ) {
179 throw SemanticError( "No interpretations for case control expression", untyped );
180 } // if
181 finishExpr( newExpr, *newEnv );
182 return newExpr;
183 }
[71f4e4f]184
[a32b204]185 }
[71f4e4f]186
[a4ca48c]187 void Resolver::previsit( ObjectDecl *objectDecl ) {
188 Type *new_type = resolveTypeof( objectDecl->get_type(), indexer );
[a32b204]189 objectDecl->set_type( new_type );
[3cfe27f]190 // To handle initialization of routine pointers, e.g., int (*fp)(int) = foo(), means that class-variable
191 // initContext is changed multiple time because the LHS is analysed twice. The second analysis changes
192 // initContext because of a function type can contain object declarations in the return and parameter types. So
193 // each value of initContext is retained, so the type on the first analysis is preserved and used for selecting
194 // the RHS.
[a4ca48c]195 GuardValue( currentObject );
[e4d829b]196 currentObject = CurrentObject( objectDecl->get_type() );
197 if ( inEnumDecl && dynamic_cast< EnumInstType * >( objectDecl->get_type() ) ) {
[a436947]198 // enumerator initializers should not use the enum type to initialize, since
199 // the enum type is still incomplete at this point. Use signed int instead.
[e4d829b]200 currentObject = CurrentObject( new BasicType( Type::Qualifiers(), BasicType::SignedInt ) );
[a436947]201 }
[bfbf97f]202 }
203
[40e636a]204 template< typename PtrType >
205 void Resolver::handlePtrType( PtrType * type ) {
206 if ( type->get_dimension() ) {
207 CastExpr *castExpr = new CastExpr( type->get_dimension(), SymTab::SizeType->clone() );
[a4ca48c]208 Expression *newExpr = findSingleExpression( castExpr, indexer );
[40e636a]209 delete type->get_dimension();
210 type->set_dimension( newExpr );
[d1d17f5]211 }
[40e636a]212 }
213
[a4ca48c]214 void Resolver::previsit( ArrayType * at ) {
[40e636a]215 handlePtrType( at );
[a32b204]216 }
[94b4364]217
[a4ca48c]218 void Resolver::previsit( PointerType * pt ) {
[40e636a]219 handlePtrType( pt );
220 }
221
[a4ca48c]222 void Resolver::previsit( TypeDecl *typeDecl ) {
[a32b204]223 if ( typeDecl->get_base() ) {
[a4ca48c]224 Type *new_type = resolveTypeof( typeDecl->get_base(), indexer );
[a32b204]225 typeDecl->set_base( new_type );
226 } // if
227 }
[94b4364]228
[a4ca48c]229 void Resolver::previsit( FunctionDecl *functionDecl ) {
[d9a0e76]230#if 0
[a4ca48c]231 std::cerr << "resolver visiting functiondecl ";
232 functionDecl->print( std::cerr );
233 std::cerr << std::endl;
[d9a0e76]234#endif
[a4ca48c]235 Type *new_type = resolveTypeof( functionDecl->get_type(), indexer );
[a32b204]236 functionDecl->set_type( new_type );
[a4ca48c]237 GuardValue( functionReturn );
[906e24d]238 functionReturn = ResolvExpr::extractResultType( functionDecl->get_functionType() );
[a4ca48c]239 }
[88d1066]240
[a4ca48c]241
242 void Resolver::postvisit( FunctionDecl *functionDecl ) {
[88d1066]243 // default value expressions have an environment which shouldn't be there and trips up later passes.
244 // xxx - it might be necessary to somehow keep the information from this environment, but I can't currently
245 // see how it's useful.
246 for ( Declaration * d : functionDecl->get_functionType()->get_parameters() ) {
247 if ( ObjectDecl * obj = dynamic_cast< ObjectDecl * >( d ) ) {
248 if ( SingleInit * init = dynamic_cast< SingleInit * >( obj->get_init() ) ) {
249 delete init->get_value()->get_env();
250 init->get_value()->set_env( nullptr );
251 }
252 }
253 }
[a32b204]254 }
[51b73452]255
[a4ca48c]256 void Resolver::previsit( EnumDecl * ) {
[a436947]257 // in case we decide to allow nested enums
[a4ca48c]258 GuardValue( inEnumDecl );
[a436947]259 inEnumDecl = true;
260 }
261
[a4ca48c]262 void Resolver::previsit( ExprStmt *exprStmt ) {
263 visit_children = false;
[1d2b64f]264 assertf( exprStmt->get_expr(), "ExprStmt has null Expression in resolver" );
[a4ca48c]265 Expression *newExpr = findVoidExpression( exprStmt->get_expr(), indexer );
[1d2b64f]266 delete exprStmt->get_expr();
267 exprStmt->set_expr( newExpr );
[a32b204]268 }
[51b73452]269
[a4ca48c]270 void Resolver::previsit( AsmExpr *asmExpr ) {
271 visit_children = false;
272 Expression *newExpr = findVoidExpression( asmExpr->get_operand(), indexer );
[7f5566b]273 delete asmExpr->get_operand();
274 asmExpr->set_operand( newExpr );
275 if ( asmExpr->get_inout() ) {
[a4ca48c]276 newExpr = findVoidExpression( asmExpr->get_inout(), indexer );
[7f5566b]277 delete asmExpr->get_inout();
278 asmExpr->set_inout( newExpr );
279 } // if
280 }
281
[a4ca48c]282 void Resolver::previsit( AsmStmt *asmStmt ) {
283 visit_children = false;
284 acceptAll( asmStmt->get_input(), *visitor );
285 acceptAll( asmStmt->get_output(), *visitor );
[7f5566b]286 }
287
[a4ca48c]288 void Resolver::previsit( IfStmt *ifStmt ) {
289 Expression *newExpr = findSingleExpression( ifStmt->get_condition(), indexer );
[a32b204]290 delete ifStmt->get_condition();
291 ifStmt->set_condition( newExpr );
292 }
[51b73452]293
[a4ca48c]294 void Resolver::previsit( WhileStmt *whileStmt ) {
295 Expression *newExpr = findSingleExpression( whileStmt->get_condition(), indexer );
[a32b204]296 delete whileStmt->get_condition();
297 whileStmt->set_condition( newExpr );
298 }
[51b73452]299
[a4ca48c]300 void Resolver::previsit( ForStmt *forStmt ) {
[a32b204]301 if ( forStmt->get_condition() ) {
[a4ca48c]302 Expression * newExpr = findSingleExpression( forStmt->get_condition(), indexer );
[a32b204]303 delete forStmt->get_condition();
304 forStmt->set_condition( newExpr );
305 } // if
[71f4e4f]306
[a32b204]307 if ( forStmt->get_increment() ) {
[a4ca48c]308 Expression * newExpr = findVoidExpression( forStmt->get_increment(), indexer );
[a32b204]309 delete forStmt->get_increment();
310 forStmt->set_increment( newExpr );
311 } // if
312 }
[51b73452]313
[a4ca48c]314 void Resolver::previsit( SwitchStmt *switchStmt ) {
315 GuardValue( currentObject );
[a32b204]316 Expression *newExpr;
[a4ca48c]317 newExpr = findIntegralExpression( switchStmt->get_condition(), indexer );
[a32b204]318 delete switchStmt->get_condition();
319 switchStmt->set_condition( newExpr );
[71f4e4f]320
[e4d829b]321 currentObject = CurrentObject( newExpr->get_result() );
[a32b204]322 }
[51b73452]323
[a4ca48c]324 void Resolver::previsit( CaseStmt *caseStmt ) {
[32b8144]325 if ( caseStmt->get_condition() ) {
[e4d829b]326 std::list< InitAlternative > initAlts = currentObject.getOptions();
327 assertf( initAlts.size() == 1, "SwitchStmt did not correctly resolve an integral expression." );
328 CastExpr * castExpr = new CastExpr( caseStmt->get_condition(), initAlts.front().type->clone() );
[a4ca48c]329 Expression * newExpr = findSingleExpression( castExpr, indexer );
[e3e16bc]330 castExpr = strict_dynamic_cast< CastExpr * >( newExpr );
[32b8144]331 caseStmt->set_condition( castExpr->get_arg() );
332 castExpr->set_arg( nullptr );
333 delete castExpr;
334 }
[a32b204]335 }
[51b73452]336
[a4ca48c]337 void Resolver::previsit( BranchStmt *branchStmt ) {
338 visit_children = false;
[de62360d]339 // must resolve the argument for a computed goto
340 if ( branchStmt->get_type() == BranchStmt::Goto ) { // check for computed goto statement
[2871210]341 if ( Expression * arg = branchStmt->get_computedTarget() ) {
[de62360d]342 VoidType v = Type::Qualifiers(); // cast to void * for the alternative finder
343 PointerType pt( Type::Qualifiers(), v.clone() );
344 CastExpr * castExpr = new CastExpr( arg, pt.clone() );
[a4ca48c]345 Expression * newExpr = findSingleExpression( castExpr, indexer ); // find best expression
[de62360d]346 branchStmt->set_target( newExpr );
347 } // if
348 } // if
349 }
350
[a4ca48c]351 void Resolver::previsit( ReturnStmt *returnStmt ) {
352 visit_children = false;
[a32b204]353 if ( returnStmt->get_expr() ) {
[906e24d]354 CastExpr *castExpr = new CastExpr( returnStmt->get_expr(), functionReturn->clone() );
[a4ca48c]355 Expression *newExpr = findSingleExpression( castExpr, indexer );
[a32b204]356 delete castExpr;
357 returnStmt->set_expr( newExpr );
358 } // if
359 }
[51b73452]360
[a4ca48c]361 void Resolver::previsit( ThrowStmt *throwStmt ) {
362 visit_children = false;
[cbce272]363 // TODO: Replace *exception type with &exception type.
[307a732]364 if ( throwStmt->get_expr() ) {
[cbce272]365 StructDecl * exception_decl =
[a4ca48c]366 indexer.lookupStruct( "__cfaehm__base_exception_t" );
[cbce272]367 assert( exception_decl );
368 Expression * wrapped = new CastExpr(
369 throwStmt->get_expr(),
370 new PointerType(
371 noQualifiers,
372 new StructInstType(
373 noQualifiers,
374 exception_decl
375 )
376 )
377 );
[a4ca48c]378 Expression * newExpr = findSingleExpression( wrapped, indexer );
[307a732]379 throwStmt->set_expr( newExpr );
380 }
381 }
382
[a4ca48c]383 void Resolver::previsit( CatchStmt *catchStmt ) {
[cbce272]384 if ( catchStmt->get_cond() ) {
385 Expression * wrapped = new CastExpr(
386 catchStmt->get_cond(),
387 new BasicType( noQualifiers, BasicType::Bool )
388 );
[a4ca48c]389 catchStmt->set_cond( findSingleExpression( wrapped, indexer ) );
[cbce272]390 }
391 }
392
[b5c5684]393 template< typename T >
394 bool isCharType( T t ) {
395 if ( BasicType * bt = dynamic_cast< BasicType * >( t ) ) {
[71f4e4f]396 return bt->get_kind() == BasicType::Char || bt->get_kind() == BasicType::SignedChar ||
[b5c5684]397 bt->get_kind() == BasicType::UnsignedChar;
398 }
399 return false;
400 }
401
[a4ca48c]402 void Resolver::previsit( SingleInit *singleInit ) {
403 visit_children = false;
[62423350]404 // resolve initialization using the possibilities as determined by the currentObject cursor
[e4d829b]405 UntypedInitExpr * untyped = new UntypedInitExpr( singleInit->get_value(), currentObject.getOptions() );
[a4ca48c]406 Expression * newExpr = findSingleExpression( untyped, indexer );
[e3e16bc]407 InitExpr * initExpr = strict_dynamic_cast< InitExpr * >( newExpr );
[62423350]408
409 // move cursor to the object that is actually initialized
[e4d829b]410 currentObject.setNext( initExpr->get_designation() );
[62423350]411
412 // discard InitExpr wrapper and retain relevant pieces
413 newExpr = initExpr->get_expr();
[435e75f]414 newExpr->set_env( initExpr->get_env() );
[62423350]415 initExpr->set_expr( nullptr );
416 initExpr->set_env( nullptr );
[e4d829b]417 delete initExpr;
418
[62423350]419 // get the actual object's type (may not exactly match what comes back from the resolver due to conversions)
420 Type * initContext = currentObject.getCurrentType();
421
422 // check if actual object's type is char[]
423 if ( ArrayType * at = dynamic_cast< ArrayType * >( initContext ) ) {
424 if ( isCharType( at->get_base() ) ) {
425 // check if the resolved type is char *
426 if ( PointerType * pt = dynamic_cast< PointerType *>( newExpr->get_result() ) ) {
427 if ( isCharType( pt->get_base() ) ) {
428 // strip cast if we're initializing a char[] with a char *, e.g. char x[] = "hello";
[e3e16bc]429 CastExpr *ce = strict_dynamic_cast< CastExpr * >( newExpr );
[62423350]430 newExpr = ce->get_arg();
431 ce->set_arg( nullptr );
432 delete ce;
433 }
434 }
435 }
436 }
[94b4364]437
[62423350]438 // set initializer expr to resolved express
439 singleInit->set_value( newExpr );
440
441 // move cursor to next object in preparation for next initializer
442 currentObject.increment();
443 }
[94b4364]444
[a4ca48c]445 void Resolver::previsit( ListInit * listInit ) {
446 visit_children = false;
[62423350]447 // move cursor into brace-enclosed initializer-list
[e4d829b]448 currentObject.enterListInit();
449 // xxx - fix this so that the list isn't copied, iterator should be used to change current element
450 std::list<Designation *> newDesignations;
451 for ( auto p : group_iterate(listInit->get_designations(), listInit->get_initializers()) ) {
[62423350]452 // iterate designations and initializers in pairs, moving the cursor to the current designated object and resolving
453 // the initializer against that object.
[e4d829b]454 Designation * des = std::get<0>(p);
455 Initializer * init = std::get<1>(p);
456 newDesignations.push_back( currentObject.findNext( des ) );
[a4ca48c]457 init->accept( *visitor );
[b5c5684]458 }
[62423350]459 // set the set of 'resolved' designations and leave the brace-enclosed initializer-list
[e4d829b]460 listInit->get_designations() = newDesignations; // xxx - memory management
461 currentObject.exitListInit();
462
[62423350]463 // xxx - this part has not be folded into CurrentObject yet
[e4d829b]464 // } else if ( TypeInstType * tt = dynamic_cast< TypeInstType * >( initContext ) ) {
465 // Type * base = tt->get_baseType()->get_base();
466 // if ( base ) {
467 // // know the implementation type, so try using that as the initContext
468 // ObjectDecl tmpObj( "", Type::StorageClasses(), LinkageSpec::Cforall, nullptr, base->clone(), nullptr );
469 // currentObject = &tmpObj;
470 // visit( listInit );
471 // } else {
472 // // missing implementation type -- might be an unknown type variable, so try proceeding with the current init context
473 // Parent::visit( listInit );
474 // }
475 // } else {
[a32b204]476 }
[71f4e4f]477
[f1e012b]478 // ConstructorInit - fall back on C-style initializer
479 void Resolver::fallbackInit( ConstructorInit * ctorInit ) {
480 // could not find valid constructor, or found an intrinsic constructor
481 // fall back on C-style initializer
482 delete ctorInit->get_ctor();
483 ctorInit->set_ctor( NULL );
[71a145de]484 delete ctorInit->get_dtor();
485 ctorInit->set_dtor( NULL );
[a4ca48c]486 maybeAccept( ctorInit->get_init(), *visitor );
[f1e012b]487 }
488
[1d2b64f]489 // needs to be callable from outside the resolver, so this is a standalone function
490 void resolveCtorInit( ConstructorInit * ctorInit, const SymTab::Indexer & indexer ) {
491 assert( ctorInit );
[a4ca48c]492 PassVisitor<Resolver> resolver( indexer );
[1d2b64f]493 ctorInit->accept( resolver );
494 }
495
496 void resolveStmtExpr( StmtExpr * stmtExpr, const SymTab::Indexer & indexer ) {
497 assert( stmtExpr );
[a4ca48c]498 PassVisitor<Resolver> resolver( indexer );
[1d2b64f]499 stmtExpr->accept( resolver );
500 }
501
[a4ca48c]502 void Resolver::previsit( ConstructorInit *ctorInit ) {
503 visit_children = false;
[1ba88a0]504 // xxx - fallback init has been removed => remove fallbackInit function and remove complexity from FixInit and remove C-init from ConstructorInit
[a4ca48c]505 maybeAccept( ctorInit->get_ctor(), *visitor );
506 maybeAccept( ctorInit->get_dtor(), *visitor );
[071a31a]507
[5b2f5bb]508 // found a constructor - can get rid of C-style initializer
509 delete ctorInit->get_init();
510 ctorInit->set_init( NULL );
[ec79847]511
512 // intrinsic single parameter constructors and destructors do nothing. Since this was
513 // implicitly generated, there's no way for it to have side effects, so get rid of it
514 // to clean up generated code.
[f9cebb5]515 if ( InitTweak::isIntrinsicSingleArgCallStmt( ctorInit->get_ctor() ) ) {
[ec79847]516 delete ctorInit->get_ctor();
517 ctorInit->set_ctor( NULL );
518 }
[f9cebb5]519
520 if ( InitTweak::isIntrinsicSingleArgCallStmt( ctorInit->get_dtor() ) ) {
[ec79847]521 delete ctorInit->get_dtor();
522 ctorInit->set_dtor( NULL );
523 }
[a465caff]524
525 // xxx - todo -- what about arrays?
526 // if ( dtor == NULL && InitTweak::isIntrinsicCallStmt( ctorInit->get_ctor() ) ) {
527 // // can reduce the constructor down to a SingleInit using the
528 // // second argument from the ctor call, since
529 // delete ctorInit->get_ctor();
530 // ctorInit->set_ctor( NULL );
531
532 // Expression * arg =
533 // ctorInit->set_init( new SingleInit( arg ) );
534 // }
[71f4e4f]535 }
[51b73452]536} // namespace ResolvExpr
[a32b204]537
538// Local Variables: //
539// tab-width: 4 //
540// mode: c++ //
541// compile-command: "make install" //
542// End: //
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