source: src/GenPoly/Box.cc@ 679864e1

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor 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 679864e1 was c29d9ce, checked in by Rob Schluntz <rschlunt@…>, 10 years ago

fix issues where incorrect number of adapters can be passed as parameters and where the wrong adapter is passed based on whether the adaptee has a polymorphic return type
  • Property mode set to 100644
File size: 46.1 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// Box.cc --
8//
9// Author : Richard C. Bilson
10// Created On : Mon May 18 07:44:20 2015
11// Last Modified By : Rob Schluntz
12// Last Modified On : Tue Aug 11 16:22:35 2015
13// Update Count : 89
14//
15
16#include <set>
17#include <stack>
18#include <string>
19#include <iterator>
20#include <algorithm>
21#include <cassert>
22
23#include "Box.h"
24#include "PolyMutator.h"
25#include "FindFunction.h"
26#include "ScrubTyVars.h"
27
28#include "Parser/ParseNode.h"
29
30#include "SynTree/Type.h"
31#include "SynTree/Expression.h"
32#include "SynTree/Initializer.h"
33#include "SynTree/Statement.h"
34#include "SynTree/Mutator.h"
35
36#include "ResolvExpr/TypeEnvironment.h"
37
38#include "SymTab/Mangler.h"
39
40#include "SemanticError.h"
41#include "UniqueName.h"
42#include "utility.h"
43
44#include <ext/functional> // temporary
45
46namespace GenPoly {
47 namespace {
48 const std::list<Label> noLabels;
49
50 class Pass1 : public PolyMutator {
51 public:
52 Pass1();
53 virtual Expression *mutate( ApplicationExpr *appExpr );
54 virtual Expression *mutate( AddressExpr *addrExpr );
55 virtual Expression *mutate( UntypedExpr *expr );
56 virtual DeclarationWithType* mutate( FunctionDecl *functionDecl );
57 virtual TypeDecl *mutate( TypeDecl *typeDecl );
58 virtual Expression *mutate( CommaExpr *commaExpr );
59 virtual Expression *mutate( ConditionalExpr *condExpr );
60 virtual Statement *mutate(ReturnStmt *catchStmt);
61 virtual Type *mutate( PointerType *pointerType );
62 virtual Type *mutate( FunctionType *pointerType );
63
64 virtual void doBeginScope();
65 virtual void doEndScope();
66 private:
67 void passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
68 Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg );
69 Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg );
70 Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
71 void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars );
72 void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
73 void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars );
74 void findAssignOps( const std::list< TypeDecl *> &forall );
75 void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars );
76 FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars );
77 Expression *handleIntrinsics( ApplicationExpr *appExpr );
78 ObjectDecl *makeTemporary( Type *type );
79
80 typedef std::map< std::string, FunctionDecl *> AdapterMap;
81 std::map< std::string, DeclarationWithType *> assignOps;
82 std::stack< AdapterMap > adapters;
83 DeclarationWithType *retval;
84 bool useRetval;
85 UniqueName tempNamer;
86 };
87
88 class Pass2 : public PolyMutator {
89 public:
90 Pass2();
91 template< typename DeclClass >
92 DeclClass *handleDecl( DeclClass *decl, Type *type );
93 virtual DeclarationWithType *mutate( FunctionDecl *functionDecl );
94 virtual ObjectDecl *mutate( ObjectDecl *objectDecl );
95 virtual TypeDecl *mutate( TypeDecl *typeDecl );
96 virtual TypedefDecl *mutate( TypedefDecl *typedefDecl );
97 virtual Type *mutate( PointerType *pointerType );
98 virtual Type *mutate( FunctionType *funcType );
99 private:
100 void addAdapters( FunctionType *functionType );
101
102 std::map< UniqueId, std::string > adapterName;
103 };
104
105 class Pass3 : public PolyMutator {
106 public:
107 template< typename DeclClass >
108 DeclClass *handleDecl( DeclClass *decl, Type *type );
109 virtual DeclarationWithType *mutate( FunctionDecl *functionDecl );
110 virtual ObjectDecl *mutate( ObjectDecl *objectDecl );
111 virtual TypedefDecl *mutate( TypedefDecl *objectDecl );
112 virtual TypeDecl *mutate( TypeDecl *objectDecl );
113 virtual Statement *mutate( DeclStmt *declStmt );
114 virtual Type *mutate( PointerType *pointerType );
115 virtual Type *mutate( FunctionType *funcType );
116 private:
117 };
118
119 } // anonymous namespace
120
121 void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) {
122 for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) {
123 if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) {
124 (*i)->print( os );
125 os << std::endl;
126 } // if
127 } // for
128 }
129
130 void box( std::list< Declaration *>& translationUnit ) {
131 Pass1 pass1;
132 Pass2 pass2;
133 Pass3 pass3;
134 mutateAll( translationUnit, pass1 );
135 mutateAll( translationUnit, pass2 );
136 mutateAll( translationUnit, pass3 );
137 }
138
139 ////////////////////////////////////////// Pass1 ////////////////////////////////////////////////////
140
141 namespace {
142 std::string makeAdapterName( const std::string &mangleName ) {
143 return "_adapter" + mangleName;
144 }
145
146 bool isPolyRet( FunctionType *function, std::string &name, const TyVarMap &otherTyVars ) {
147 bool doTransform = false;
148 if ( ! function->get_returnVals().empty() ) {
149 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( function->get_returnVals().front()->get_type() ) ) {
150
151 // figure out if the return type is specified by a type parameter
152 for ( std::list< TypeDecl *>::const_iterator tyVar = function->get_forall().begin(); tyVar != function->get_forall().end(); ++tyVar ) {
153 if ( (*tyVar)->get_name() == typeInst->get_name() ) {
154 doTransform = true;
155 name = typeInst->get_name();
156 break;
157 } // if
158 } // for
159 if ( ! doTransform && otherTyVars.find( typeInst->get_name() ) != otherTyVars.end() ) {
160 doTransform = true;
161 } // if
162 } // if
163 } // if
164 return doTransform;
165 }
166
167 bool isPolyRet( FunctionType *function, std::string &name ) {
168 TyVarMap dummyTyVars;
169 return isPolyRet( function, name, dummyTyVars );
170 }
171
172 bool isPolyRet( FunctionType *function, const TyVarMap &otherTyVars ) {
173 std::string dummyString;
174 return isPolyRet( function, dummyString, otherTyVars );
175 }
176
177 Pass1::Pass1()
178 : useRetval( false ), tempNamer( "_temp" ) {
179 }
180
181 bool checkAssignment( DeclarationWithType *decl, std::string &name ) {
182 if ( decl->get_name() == "?=?" ) {
183 if ( PointerType *ptrType = dynamic_cast< PointerType *>( decl->get_type() ) ) {
184 if ( FunctionType *funType = dynamic_cast< FunctionType *>( ptrType->get_base() ) ) {
185 if ( funType->get_parameters().size() == 2 ) {
186 if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) {
187 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) {
188 name = typeInst->get_name();
189 return true;
190 } // if
191 } // if
192 } // if
193 } // if
194 } // if
195 } // if
196 return false;
197 }
198
199 void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) {
200 assignOps.clear();
201 for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
202 for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) {
203 std::string typeName;
204 if ( checkAssignment( *assert, typeName ) ) {
205 assignOps[ typeName ] = *assert;
206 } // if
207 } // for
208 } // for
209 }
210
211 DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) {
212 if ( functionDecl->get_statements() ) {
213 TyVarMap oldtyVars = scopeTyVars;
214 DeclarationWithType *oldRetval = retval;
215 bool oldUseRetval = useRetval;
216
217 retval = 0;
218 std::string typeName;
219 if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
220 retval = functionDecl->get_functionType()->get_returnVals().front();
221
222 // give names to unnamed return values
223 if ( retval->get_name() == "" ) {
224 retval->set_name( "_retparm" );
225 retval->set_linkage( LinkageSpec::C );
226 } // if
227 } // if
228
229 scopeTyVars.clear();
230/// std::cerr << "clear\n";
231 makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
232 findAssignOps( functionDecl->get_functionType()->get_forall() );
233 functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
234
235 scopeTyVars = oldtyVars;
236/// std::cerr << "end FunctionDecl: ";
237/// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
238/// std::cerr << i->first << " ";
239/// }
240/// std::cerr << "\n";
241 retval = oldRetval;
242 useRetval = oldUseRetval;
243 // doEndScope();
244 } // if
245 return functionDecl;
246 }
247
248 TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) {
249/// std::cerr << "add " << typeDecl->get_name() << "\n";
250 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
251 return Mutator::mutate( typeDecl );
252 }
253
254 Expression *Pass1::mutate( CommaExpr *commaExpr ) {
255 bool oldUseRetval = useRetval;
256 useRetval = false;
257 commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
258 useRetval = oldUseRetval;
259 commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
260 return commaExpr;
261 }
262
263 Expression *Pass1::mutate( ConditionalExpr *condExpr ) {
264 bool oldUseRetval = useRetval;
265 useRetval = false;
266 condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
267 useRetval = oldUseRetval;
268 condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
269 condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
270 return condExpr;
271
272 }
273
274 void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
275 for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
276 ResolvExpr::EqvClass eqvClass;
277 assert( env );
278 if ( tyParm->second == TypeDecl::Any ) {
279 Type *concrete = env->lookup( tyParm->first );
280 if ( concrete ) {
281 arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
282 arg++;
283 } else {
284 throw SemanticError( "unbound type variable in application ", appExpr );
285 } // if
286 } // if
287 } // for
288 }
289
290 ObjectDecl *Pass1::makeTemporary( Type *type ) {
291 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
292 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
293 return newObj;
294 }
295
296 TypeInstType *isPolyType( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
297 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
298 if ( env ) {
299 if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
300 return isPolyType( newType, env, tyVars );
301 } // if
302 } // if
303 if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) {
304 return typeInst;
305 } else {
306 return 0;
307 } // if
308 } else {
309 return 0;
310 } // if
311 }
312
313 Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) {
314 if ( useRetval ) {
315 assert( retval );
316 arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
317 arg++;
318 } else {
319 ObjectDecl *newObj = makeTemporary( retType->clone() );
320 Expression *paramExpr = new VariableExpr( newObj );
321 if ( ! isPolyType( newObj->get_type(), env, scopeTyVars ) ) {
322 paramExpr = new AddressExpr( paramExpr );
323 } // if
324 arg = appExpr->get_args().insert( arg, paramExpr );
325 arg++;
326/// stmtsToAdd.push_back( new ExprStmt( noLabels, appExpr ) );
327 CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
328 commaExpr->set_env( appExpr->get_env() );
329 appExpr->set_env( 0 );
330 return commaExpr;
331 } // if
332 return appExpr;
333 }
334
335 Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) {
336 ResolvExpr::EqvClass eqvClass;
337 assert( env );
338 Type *concrete = env->lookup( typeName );
339 if ( concrete == 0 ) {
340 throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
341 } // if
342 return addRetParam( appExpr, function, concrete, arg );
343 }
344
345 Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
346 Expression *ret = appExpr;
347 if ( ! function->get_returnVals().empty() && isPolyVal( function->get_returnVals().front()->get_type(), tyVars ) ) {
348 ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
349 } // if
350 std::string mangleName = SymTab::Mangler::mangle( function );
351 std::string adapterName = makeAdapterName( mangleName );
352
353 appExpr->get_args().push_front( appExpr->get_function() );
354 appExpr->set_function( new NameExpr( adapterName ) );
355
356 return ret;
357 }
358
359 void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) {
360 assert( ! arg->get_results().empty() );
361/// if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) {
362 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( param );
363 if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) {
364 if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
365 // if the argument's type is a type parameter, we don't need to box again!
366 return;
367 } else if ( arg->get_results().front()->get_isLvalue() ) {
368 // VariableExpr and MemberExpr are lvalues
369 arg = new AddressExpr( arg );
370 } else {
371 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
372 newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
373 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
374 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
375 assign->get_args().push_back( new VariableExpr( newObj ) );
376 assign->get_args().push_back( arg );
377 stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
378 arg = new AddressExpr( new VariableExpr( newObj ) );
379 } // if
380 } // if
381/// }
382 }
383
384 void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) {
385 Type *newType = formal->clone();
386 std::list< FunctionType *> functions;
387 // instead of functions needing adapters, this really ought to look for
388 // any function mentioning a polymorphic type
389 findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
390 if ( ! functions.empty() ) {
391 actual = new CastExpr( actual, newType );
392 } else {
393 delete newType;
394 } // if
395 }
396
397 void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
398/// std::cout << "function is ";
399/// function->print( std::cout );
400 for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
401/// std::cout << "parameter is ";
402/// (*param)->print( std::fcout );
403/// std::cout << std::endl << "argument is ";
404/// (*arg)->print( std::cout );
405 assert( arg != appExpr->get_args().end() );
406 addCast( *arg, (*param)->get_type(), exprTyVars );
407 boxParam( (*param)->get_type(), *arg, exprTyVars );
408 } // for
409 }
410
411 void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
412 std::list< Expression *>::iterator cur = arg;
413 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
414 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
415 InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
416 assert( inferParam != appExpr->get_inferParams().end() );
417 Expression *newExpr = inferParam->second.expr->clone();
418 addCast( newExpr, (*assert)->get_type(), tyVars );
419 boxParam( (*assert)->get_type(), newExpr, tyVars );
420 appExpr->get_args().insert( cur, newExpr );
421 } // for
422 } // for
423 }
424
425 void makeRetParm( FunctionType *funcType ) {
426 DeclarationWithType *retParm = funcType->get_returnVals().front();
427
428 // make a new parameter that is a pointer to the type of the old return value
429 retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
430 funcType->get_parameters().push_front( retParm );
431
432 // we don't need the return value any more
433 funcType->get_returnVals().clear();
434 }
435
436 FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) {
437 // actually make the adapter type
438 FunctionType *adapter = adaptee->clone();
439 if ( ! adapter->get_returnVals().empty() && isPolyVal( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
440 makeRetParm( adapter );
441 } // if
442 adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
443 return adapter;
444 }
445
446 Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) {
447 assert( param );
448 assert( arg );
449/// std::cout << "arg type is ";
450/// arg->get_type()->print( std::cout );
451/// std::cout << "param type is ";
452/// param->get_type()->print( std::cout );
453/// std::cout << " tyVars are: ";
454/// printTyVarMap( std::cout, tyVars );
455 if ( isPolyVal( realParam->get_type(), tyVars ) ) {
456/// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) {
457/// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() );
458/// } else {
459 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
460 deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
461 deref->get_results().push_back( arg->get_type()->clone() );
462 return deref;
463/// }
464 } // if
465 return new VariableExpr( param );
466 }
467
468 void addAdapterParams( ApplicationExpr *adapteeApp, std::list< DeclarationWithType *>::iterator arg, std::list< DeclarationWithType *>::iterator param, std::list< DeclarationWithType *>::iterator paramEnd, std::list< DeclarationWithType *>::iterator realParam, const TyVarMap &tyVars ) {
469 UniqueName paramNamer( "_p" );
470 for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
471 if ( (*param)->get_name() == "" ) {
472 (*param)->set_name( paramNamer.newName() );
473 (*param)->set_linkage( LinkageSpec::C );
474 } // if
475 adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) );
476 } // for
477 }
478
479
480
481 FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
482 FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
483 adapterType = ScrubTyVars::scrub( adapterType, tyVars );
484 DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
485 adapteeDecl->set_name( "_adaptee" );
486 ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
487 Statement *bodyStmt;
488
489 std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
490 std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
491 std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
492 for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
493 assert( tyArg != realType->get_forall().end() );
494 std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin();
495 std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin();
496 std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin();
497 for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
498 assert( assertArg != (*tyArg)->get_assertions().end() );
499 adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) );
500 } // for
501 } // for
502
503 std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
504 std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
505 std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
506 param++; // skip adaptee parameter
507 if ( realType->get_returnVals().empty() ) {
508 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
509 bodyStmt = new ExprStmt( noLabels, adapteeApp );
510 } else if ( isPolyVal( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
511 if ( (*param)->get_name() == "" ) {
512 (*param)->set_name( "_ret" );
513 (*param)->set_linkage( LinkageSpec::C );
514 } // if
515 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
516 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
517 deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
518 assign->get_args().push_back( deref );
519 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
520 assign->get_args().push_back( adapteeApp );
521 bodyStmt = new ExprStmt( noLabels, assign );
522 } else {
523 // adapter for a function that returns a monomorphic value
524 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
525 bodyStmt = new ReturnStmt( noLabels, adapteeApp );
526 } // if
527 CompoundStmt *adapterBody = new CompoundStmt( noLabels );
528 adapterBody->get_kids().push_back( bodyStmt );
529 std::string adapterName = makeAdapterName( mangleName );
530 return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
531 }
532
533 void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
534 // collect a list of function types passed as parameters or implicit parameters (assertions)
535 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
536 std::list< FunctionType *> functions;
537 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
538 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
539 findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
540 } // for
541 } // for
542 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
543 findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
544 } // for
545
546 // parameter function types for which an appropriate adapter has been generated.
547 // we cannot use the types after applying substitutions, since two different
548 // parameter types may be unified to the same type
549 std::set< std::string > adaptersDone;
550
551 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
552 FunctionType *originalFunction = (*funType)->clone();
553 FunctionType *realFunction = (*funType)->clone();
554 std::string mangleName = SymTab::Mangler::mangle( realFunction );
555
556 // only attempt to create an adapter or pass one as a parameter if we haven't
557 // already done so for this pre-substitution parameter function type.
558 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
559 std::string mangleName = SymTab::Mangler::mangle( realFunction );
560 adaptersDone.insert( adaptersDone.begin(), mangleName );
561
562 // apply substitution to type variables to figure out what the
563 // adapter's type should look like
564 assert( env );
565 env->apply( realFunction );
566 mangleName = SymTab::Mangler::mangle( realFunction );
567
568 if ( needsAdapter( realFunction, exprTyVars, true ) ) {
569 // the function still contains type variables, which means we are in a polymorphic
570 // context and the adapter function is a parameter - call the parameter and don't
571 // create a new adapter.
572 appExpr->get_args().push_front( new NameExpr( makeAdapterName ( mangleName ) ) );
573 } else {
574 if ( isPolyRet( originalFunction, exprTyVars ) ) {
575 // if the return type involved polymorphic types, then
576 // the adapter will need to take those polymorphic types
577 // as pointers. Therefore, there can be two different
578 // functions with the same mangled name, so we need two adapter map
579 // stacks and also we need the mangled names to be different.
580 mangleName += "polyret_";
581 }
582
583 AdapterMap & adapters = Pass1::adapters.top();
584 AdapterMap::iterator adapter = adapters.find( mangleName );
585 if ( adapter == adapters.end() ) {
586 // adapter has not been created yet in the current scope, so define it
587 FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars );
588 adapter = adapters.insert( adapters.begin(), std::pair< std::string, FunctionDecl *>( mangleName, newAdapter ) );
589 stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
590 } // if
591 assert( adapter != adapters.end() );
592
593 // add the appropriate adapter as a parameter
594 appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
595 } // if
596 } // if
597 } // for
598 }
599
600 TypeInstType *isPolyPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
601 if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) {
602 return isPolyType( ptr->get_base(), env, tyVars );
603 } else if ( env ) {
604 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
605 if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
606 return isPolyPtr( newType, env, tyVars );
607 } // if
608 } // if
609 } // if
610 return 0;
611 }
612
613 TypeInstType *isPolyPtrPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
614 if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) {
615 return isPolyPtr( ptr->get_base(), env, tyVars );
616 } else if ( env ) {
617 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
618 if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
619 return isPolyPtrPtr( newType, env, tyVars );
620 } // if
621 } // if
622 } // if
623 return 0;
624 }
625
626 Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, std::string polyName, bool isIncr ) {
627 NameExpr *opExpr;
628 if ( isIncr ) {
629 opExpr = new NameExpr( "?+=?" );
630 } else {
631 opExpr = new NameExpr( "?-=?" );
632 } // if
633 UntypedExpr *addAssign = new UntypedExpr( opExpr );
634 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
635 addAssign->get_args().push_back( address->get_arg() );
636 } else {
637 addAssign->get_args().push_back( appExpr->get_args().front() );
638 } // if
639 addAssign->get_args().push_back( new NameExpr( polyName ) );
640 addAssign->get_results().front() = appExpr->get_results().front()->clone();
641 if ( appExpr->get_env() ) {
642 addAssign->set_env( appExpr->get_env() );
643 appExpr->set_env( 0 );
644 } // if
645 appExpr->get_args().clear();
646 delete appExpr;
647 return addAssign;
648 }
649
650 Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) {
651 if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) {
652 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
653 if ( varExpr->get_var()->get_name() == "?[?]" ) {
654 assert( ! appExpr->get_results().empty() );
655 assert( appExpr->get_args().size() == 2 );
656 TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars );
657 TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars );
658 assert( ! typeInst1 || ! typeInst2 );
659 UntypedExpr *ret = 0;
660 if ( typeInst1 || typeInst2 ) {
661 ret = new UntypedExpr( new NameExpr( "?+?" ) );
662 } // if
663 if ( typeInst1 ) {
664 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
665 multiply->get_args().push_back( appExpr->get_args().back() );
666 multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
667 ret->get_args().push_back( appExpr->get_args().front() );
668 ret->get_args().push_back( multiply );
669 } else if ( typeInst2 ) {
670 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
671 multiply->get_args().push_back( appExpr->get_args().front() );
672 multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) );
673 ret->get_args().push_back( multiply );
674 ret->get_args().push_back( appExpr->get_args().back() );
675 } // if
676 if ( typeInst1 || typeInst2 ) {
677 ret->get_results().push_front( appExpr->get_results().front()->clone() );
678 if ( appExpr->get_env() ) {
679 ret->set_env( appExpr->get_env() );
680 appExpr->set_env( 0 );
681 } // if
682 appExpr->get_args().clear();
683 delete appExpr;
684 return ret;
685 } // if
686 } else if ( varExpr->get_var()->get_name() == "*?" ) {
687 assert( ! appExpr->get_results().empty() );
688 assert( ! appExpr->get_args().empty() );
689 if ( isPolyType( appExpr->get_results().front(), env, scopeTyVars ) ) {
690 Expression *ret = appExpr->get_args().front();
691 delete ret->get_results().front();
692 ret->get_results().front() = appExpr->get_results().front()->clone();
693 if ( appExpr->get_env() ) {
694 ret->set_env( appExpr->get_env() );
695 appExpr->set_env( 0 );
696 } // if
697 appExpr->get_args().clear();
698 delete appExpr;
699 return ret;
700 } // if
701 } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) {
702 assert( ! appExpr->get_results().empty() );
703 assert( appExpr->get_args().size() == 1 );
704 if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) {
705 Type *tempType = appExpr->get_results().front()->clone();
706 if ( env ) {
707 env->apply( tempType );
708 } // if
709 ObjectDecl *newObj = makeTemporary( tempType );
710 VariableExpr *tempExpr = new VariableExpr( newObj );
711 UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
712 assignExpr->get_args().push_back( tempExpr->clone() );
713 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
714 assignExpr->get_args().push_back( address->get_arg()->clone() );
715 } else {
716 assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
717 } // if
718 CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "?++" ) );
719 return new CommaExpr( firstComma, tempExpr );
720 } // if
721 } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) {
722 assert( ! appExpr->get_results().empty() );
723 assert( appExpr->get_args().size() == 1 );
724 if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) {
725 return makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "++?" );
726 } // if
727 } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) {
728 assert( ! appExpr->get_results().empty() );
729 assert( appExpr->get_args().size() == 2 );
730 TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars );
731 TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars );
732 if ( typeInst1 && typeInst2 ) {
733 UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
734 divide->get_args().push_back( appExpr );
735 divide->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
736 divide->get_results().push_front( appExpr->get_results().front()->clone() );
737 if ( appExpr->get_env() ) {
738 divide->set_env( appExpr->get_env() );
739 appExpr->set_env( 0 );
740 } // if
741 return divide;
742 } else if ( typeInst1 ) {
743 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
744 multiply->get_args().push_back( appExpr->get_args().back() );
745 multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
746 appExpr->get_args().back() = multiply;
747 } else if ( typeInst2 ) {
748 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
749 multiply->get_args().push_back( appExpr->get_args().front() );
750 multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) );
751 appExpr->get_args().front() = multiply;
752 } // if
753 } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) {
754 assert( ! appExpr->get_results().empty() );
755 assert( appExpr->get_args().size() == 2 );
756 TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars );
757 if ( typeInst ) {
758 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
759 multiply->get_args().push_back( appExpr->get_args().back() );
760 multiply->get_args().push_back( new NameExpr( typeInst->get_name() ) );
761 appExpr->get_args().back() = multiply;
762 } // if
763 } // if
764 return appExpr;
765 } // if
766 } // if
767 return 0;
768 }
769
770 Expression *Pass1::mutate( ApplicationExpr *appExpr ) {
771/// std::cerr << "mutate appExpr: ";
772/// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
773/// std::cerr << i->first << " ";
774/// }
775/// std::cerr << "\n";
776 bool oldUseRetval = useRetval;
777 useRetval = false;
778 appExpr->get_function()->acceptMutator( *this );
779 mutateAll( appExpr->get_args(), *this );
780 useRetval = oldUseRetval;
781
782 assert( ! appExpr->get_function()->get_results().empty() );
783 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
784 assert( pointer );
785 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
786 assert( function );
787
788 if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
789 return newExpr;
790 } // if
791
792 Expression *ret = appExpr;
793
794 std::list< Expression *>::iterator arg = appExpr->get_args().begin();
795 std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
796
797 std::string typeName;
798 if ( isPolyRet( function, typeName ) ) {
799 ret = addPolyRetParam( appExpr, function, typeName, arg );
800 } else if ( needsAdapter( function, scopeTyVars ) ) {
801/// std::cerr << "needs adapter: ";
802/// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
803/// std::cerr << i->first << " ";
804/// }
805/// std::cerr << "\n";
806 // change the application so it calls the adapter rather than the passed function
807 ret = applyAdapter( appExpr, function, arg, scopeTyVars );
808 } // if
809 arg = appExpr->get_args().begin();
810
811 TyVarMap exprTyVars;
812 makeTyVarMap( function, exprTyVars );
813
814 passTypeVars( appExpr, arg, exprTyVars );
815 addInferredParams( appExpr, function, arg, exprTyVars );
816
817 arg = paramBegin;
818
819 boxParams( appExpr, function, arg, exprTyVars );
820
821 passAdapters( appExpr, function, exprTyVars );
822
823 return ret;
824 }
825
826 Expression *Pass1::mutate( UntypedExpr *expr ) {
827 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), env, scopeTyVars ) ) {
828 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
829 if ( name->get_name() == "*?" ) {
830 Expression *ret = expr->get_args().front();
831 expr->get_args().clear();
832 delete expr;
833 return ret->acceptMutator( *this );
834 } // if
835 } // if
836 } // if
837 return PolyMutator::mutate( expr );
838 }
839
840 Expression *Pass1::mutate( AddressExpr *addrExpr ) {
841 assert( ! addrExpr->get_arg()->get_results().empty() );
842 addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
843 if ( isPolyType( addrExpr->get_arg()->get_results().front(), env, scopeTyVars ) ) {
844 Expression *ret = addrExpr->get_arg();
845 delete ret->get_results().front();
846 ret->get_results().front() = addrExpr->get_results().front()->clone();
847 addrExpr->set_arg( 0 );
848 delete addrExpr;
849 return ret;
850 } else {
851 return addrExpr;
852 } // if
853 }
854
855 Statement * Pass1::mutate(ReturnStmt *retStmt) {
856 // a cast expr on a polymorphic return value is either redundant or invalid
857 while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( retStmt->get_expr() ) ) {
858 retStmt->set_expr( castExpr->get_arg() );
859 retStmt->get_expr()->set_env( castExpr->get_env() );
860 castExpr->set_env( 0 );
861 castExpr->set_arg( 0 );
862 delete castExpr;
863 }
864 if ( retval && retStmt->get_expr() ) {
865 assert( ! retStmt->get_expr()->get_results().empty() );
866 if ( retStmt->get_expr()->get_results().front()->get_isLvalue() ) {
867/// retStmt->set_expr( mutateExpression( retStmt->get_expr() ) );
868 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() );
869 assert( typeInst );
870 std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
871 if ( assignIter == assignOps.end() ) {
872 throw SemanticError( "Attempt to return dtype or ftype object in ", retStmt->get_expr() );
873 } // if
874 ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
875 Expression *retParm = new NameExpr( retval->get_name() );
876 retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
877 assignExpr->get_args().push_back( retParm );
878 assignExpr->get_args().push_back( retStmt->get_expr() );
879 stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
880 } else {
881 useRetval = true;
882 stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( retStmt->get_expr() ) ) );
883 useRetval = false;
884 } // if
885 retStmt->set_expr( 0 );
886 } else {
887 retStmt->set_expr( mutateExpression( retStmt->get_expr() ) );
888 } // if
889 return retStmt;
890 }
891
892 Type * Pass1::mutate( PointerType *pointerType ) {
893 TyVarMap oldtyVars = scopeTyVars;
894 makeTyVarMap( pointerType, scopeTyVars );
895
896 Type *ret = Mutator::mutate( pointerType );
897
898 scopeTyVars = oldtyVars;
899 return ret;
900 }
901
902 Type * Pass1::mutate( FunctionType *functionType ) {
903 TyVarMap oldtyVars = scopeTyVars;
904 makeTyVarMap( functionType, scopeTyVars );
905
906 Type *ret = Mutator::mutate( functionType );
907
908 scopeTyVars = oldtyVars;
909 return ret;
910 }
911
912 void Pass1::doBeginScope() {
913 // actually, maybe this could (should?) push
914 // a copy of the current map
915 adapters.push(AdapterMap());
916 }
917
918 void Pass1::doEndScope() {
919 adapters.pop();
920 }
921
922////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////
923
924 Pass2::Pass2() {}
925
926 void Pass2::addAdapters( FunctionType *functionType ) {
927 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
928 std::list< FunctionType *> functions;
929 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
930 Type *orig = (*arg)->get_type();
931 findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
932 (*arg)->set_type( orig );
933 }
934 std::set< std::string > adaptersDone;
935 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
936 std::string mangleName = SymTab::Mangler::mangle( *funType );
937 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
938 std::string adapterName = makeAdapterName( mangleName );
939 paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
940 adaptersDone.insert( adaptersDone.begin(), mangleName );
941 }
942 }
943/// deleteAll( functions );
944 }
945
946 template< typename DeclClass >
947 DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) {
948 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
949
950 return ret;
951 }
952
953 DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
954 return handleDecl( functionDecl, functionDecl->get_functionType() );
955 }
956
957 ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
958 return handleDecl( objectDecl, objectDecl->get_type() );
959 }
960
961 TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
962 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
963 if ( typeDecl->get_base() ) {
964 return handleDecl( typeDecl, typeDecl->get_base() );
965 } else {
966 return Mutator::mutate( typeDecl );
967 }
968 }
969
970 TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
971 return handleDecl( typedefDecl, typedefDecl->get_base() );
972 }
973
974 Type * Pass2::mutate( PointerType *pointerType ) {
975 TyVarMap oldtyVars = scopeTyVars;
976 makeTyVarMap( pointerType, scopeTyVars );
977
978 Type *ret = Mutator::mutate( pointerType );
979
980 scopeTyVars = oldtyVars;
981 return ret;
982 }
983
984 Type *Pass2::mutate( FunctionType *funcType ) {
985 TyVarMap oldtyVars = scopeTyVars;
986 makeTyVarMap( funcType, scopeTyVars );
987
988 std::string typeName;
989 if ( isPolyRet( funcType, typeName ) ) {
990 DeclarationWithType *ret = funcType->get_returnVals().front();
991 ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) );
992 funcType->get_parameters().push_front( ret );
993 funcType->get_returnVals().pop_front();
994 }
995
996 std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
997 std::list< DeclarationWithType *> inferredParams;
998 ObjectDecl *newObj = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
999/// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
1000 for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
1001 ObjectDecl *thisParm;
1002 if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
1003 thisParm = newObj->clone();
1004 thisParm->set_name( (*tyParm)->get_name() );
1005 last = funcType->get_parameters().insert( last, thisParm );
1006 ++last;
1007 }
1008 for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
1009/// *assert = (*assert)->acceptMutator( *this );
1010 inferredParams.push_back( *assert );
1011 }
1012 (*tyParm)->get_assertions().clear();
1013 }
1014 delete newObj;
1015 funcType->get_parameters().splice( last, inferredParams );
1016 addAdapters( funcType );
1017 mutateAll( funcType->get_returnVals(), *this );
1018 mutateAll( funcType->get_parameters(), *this );
1019
1020 scopeTyVars = oldtyVars;
1021 return funcType;
1022 }
1023
1024////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////
1025
1026 template< typename DeclClass >
1027 DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) {
1028 TyVarMap oldtyVars = scopeTyVars;
1029 makeTyVarMap( type, scopeTyVars );
1030
1031 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
1032 ScrubTyVars::scrub( decl, scopeTyVars );
1033
1034 scopeTyVars = oldtyVars;
1035 return ret;
1036 }
1037
1038 ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
1039 return handleDecl( objectDecl, objectDecl->get_type() );
1040 }
1041
1042 DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
1043 return handleDecl( functionDecl, functionDecl->get_functionType() );
1044 }
1045
1046 TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
1047 return handleDecl( typedefDecl, typedefDecl->get_base() );
1048 }
1049
1050 TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
1051/// Initializer *init = 0;
1052/// std::list< Expression *> designators;
1053/// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1054/// if ( typeDecl->get_base() ) {
1055/// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
1056/// }
1057/// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );
1058
1059 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1060 return Mutator::mutate( typeDecl );
1061 }
1062
1063 Type * Pass3::mutate( PointerType *pointerType ) {
1064 TyVarMap oldtyVars = scopeTyVars;
1065 makeTyVarMap( pointerType, scopeTyVars );
1066
1067 Type *ret = Mutator::mutate( pointerType );
1068
1069 scopeTyVars = oldtyVars;
1070 return ret;
1071 }
1072
1073 Type * Pass3::mutate( FunctionType *functionType ) {
1074 TyVarMap oldtyVars = scopeTyVars;
1075 makeTyVarMap( functionType, scopeTyVars );
1076
1077 Type *ret = Mutator::mutate( functionType );
1078
1079 scopeTyVars = oldtyVars;
1080 return ret;
1081 }
1082
1083 Statement *Pass3::mutate( DeclStmt *declStmt ) {
1084 if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) {
1085 if ( isPolyVal( objectDecl->get_type(), scopeTyVars ) ) {
1086 // change initialization of a polymorphic value object
1087 // to allocate storage with alloca
1088 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( objectDecl->get_type() );
1089 assert( typeInst );
1090 UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
1091 alloc->get_args().push_back( new NameExpr( typeInst->get_name() ) );
1092
1093 delete objectDecl->get_init();
1094
1095 std::list<Expression*> designators;
1096 objectDecl->set_init( new SingleInit( alloc, designators ) );
1097 }
1098 }
1099 return Mutator::mutate( declStmt );
1100 }
1101 } // anonymous namespace
1102} // namespace GenPoly
1103
1104// Local Variables: //
1105// tab-width: 4 //
1106// mode: c++ //
1107// compile-command: "make install" //
1108// End: //
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