source: src/GenPoly/Box.cc@ 8c0404e

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor deferred_resn demangler enum forall-pointer-decay gc_noraii jacob/cs343-translation jenkins-sandbox memory new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new string with_gc
Last change on this file since 8c0404e was 5f6c42c, checked in by Aaron Moss <a3moss@…>, 10 years ago

Merge changes from Peter
  • Property mode set to 100644
File size: 48.0 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 : Peter A. Buhr
12// Last Modified On : Tue Dec 15 15:30:31 2015
13// Update Count : 215
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/Constant.h"
31#include "SynTree/Type.h"
32#include "SynTree/Expression.h"
33#include "SynTree/Initializer.h"
34#include "SynTree/Statement.h"
35#include "SynTree/Mutator.h"
36
37#include "ResolvExpr/TypeEnvironment.h"
38
39#include "SymTab/Mangler.h"
40
41#include "SemanticError.h"
42#include "UniqueName.h"
43#include "utility.h"
44
45#include <ext/functional> // temporary
46
47namespace GenPoly {
48 namespace {
49 const std::list<Label> noLabels;
50
51 FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars );
52
53 /// Replaces polymorphic return types with out-parameters, replaces calls to polymorphic functions with adapter calls as needed, and adds appropriate type variables to the function call
54 class Pass1 : public PolyMutator {
55 public:
56 Pass1();
57 virtual Expression *mutate( ApplicationExpr *appExpr );
58 virtual Expression *mutate( AddressExpr *addrExpr );
59 virtual Expression *mutate( UntypedExpr *expr );
60 virtual DeclarationWithType* mutate( FunctionDecl *functionDecl );
61 virtual TypeDecl *mutate( TypeDecl *typeDecl );
62 virtual Expression *mutate( CommaExpr *commaExpr );
63 virtual Expression *mutate( ConditionalExpr *condExpr );
64 virtual Statement * mutate( ReturnStmt *returnStmt );
65 virtual Type *mutate( PointerType *pointerType );
66 virtual Type * mutate( FunctionType *functionType );
67
68 virtual void doBeginScope();
69 virtual void doEndScope();
70 private:
71 void passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
72 Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg );
73 Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg );
74 Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
75 void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars );
76 void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
77 void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars );
78 void findAssignOps( const std::list< TypeDecl *> &forall );
79 void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars );
80 FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars );
81 Expression *handleIntrinsics( ApplicationExpr *appExpr );
82 ObjectDecl *makeTemporary( Type *type );
83
84 typedef std::map< std::string, DeclarationWithType *> AdapterMap;
85 std::map< std::string, DeclarationWithType *> assignOps;
86 std::stack< AdapterMap > adapters;
87 DeclarationWithType *retval;
88 bool useRetval;
89 UniqueName tempNamer;
90 };
91
92 /// Moves polymorphic returns in function types to pointer-type parameters, adds type size and assertion parameters to parameter lists as well
93 class Pass2 : public PolyMutator {
94 public:
95 template< typename DeclClass >
96 DeclClass *handleDecl( DeclClass *decl, Type *type );
97 virtual DeclarationWithType *mutate( FunctionDecl *functionDecl );
98 virtual ObjectDecl *mutate( ObjectDecl *objectDecl );
99 virtual TypeDecl *mutate( TypeDecl *typeDecl );
100 virtual TypedefDecl *mutate( TypedefDecl *typedefDecl );
101 virtual Type *mutate( PointerType *pointerType );
102 virtual Type *mutate( FunctionType *funcType );
103 private:
104 void addAdapters( FunctionType *functionType );
105
106 std::map< UniqueId, std::string > adapterName;
107 };
108
109 /// Replaces initialization of polymorphic values with alloca, declaration of dtype/ftype with appropriate void expression, and sizeof expressions of polymorphic types with the proper variable
110 class Pass3 : public PolyMutator {
111 public:
112 template< typename DeclClass >
113 DeclClass *handleDecl( DeclClass *decl, Type *type );
114 virtual DeclarationWithType *mutate( FunctionDecl *functionDecl );
115 virtual ObjectDecl *mutate( ObjectDecl *objectDecl );
116 virtual TypedefDecl *mutate( TypedefDecl *objectDecl );
117 virtual TypeDecl *mutate( TypeDecl *objectDecl );
118 virtual Statement *mutate( DeclStmt *declStmt );
119 virtual Type *mutate( PointerType *pointerType );
120 virtual Type *mutate( FunctionType *funcType );
121 private:
122 };
123
124 } // anonymous namespace
125
126 void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) {
127 for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) {
128 if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) {
129 (*i)->print( os );
130 os << std::endl;
131 } // if
132 } // for
133 }
134
135 void box( std::list< Declaration *>& translationUnit ) {
136 Pass1 pass1;
137 Pass2 pass2;
138 Pass3 pass3;
139 mutateAll( translationUnit, pass1 );
140 mutateAll( translationUnit, pass2 );
141 mutateAll( translationUnit, pass3 );
142 }
143
144 ////////////////////////////////////////// Pass1 ////////////////////////////////////////////////////
145
146 namespace {
147 std::string makePolyMonoSuffix( FunctionType * function, const TyVarMap &tyVars ) {
148 std::stringstream name;
149
150 // NOTE: this function previously used isPolyObj, which failed to produce
151 // the correct thing in some situations. It's not clear to me why this wasn't working.
152
153 // if the return type or a parameter type involved polymorphic types, then the adapter will need
154 // to take those polymorphic types as pointers. Therefore, there can be two different functions
155 // with the same mangled name, so we need to further mangle the names.
156 for ( std::list< DeclarationWithType *>::iterator retval = function->get_returnVals().begin(); retval != function->get_returnVals().end(); ++retval ) {
157 if ( isPolyType( (*retval)->get_type(), tyVars ) ) {
158 name << "P";
159 } else {
160 name << "M";
161 }
162 }
163 name << "_";
164 std::list< DeclarationWithType *> &paramList = function->get_parameters();
165 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
166 if ( isPolyType( (*arg)->get_type(), tyVars ) ) {
167 name << "P";
168 } else {
169 name << "M";
170 }
171 } // for
172 return name.str();
173 }
174
175 std::string mangleAdapterName( FunctionType * function, const TyVarMap &tyVars ) {
176 return SymTab::Mangler::mangle( function ) + makePolyMonoSuffix( function, tyVars );
177 }
178
179 std::string makeAdapterName( const std::string &mangleName ) {
180 return "_adapter" + mangleName;
181 }
182
183 Pass1::Pass1() : useRetval( false ), tempNamer( "_temp" ) {
184 adapters.push(AdapterMap());
185 }
186
187 bool checkAssignment( DeclarationWithType *decl, std::string &name ) {
188 if ( decl->get_name() == "?=?" ) {
189 if ( PointerType *ptrType = dynamic_cast< PointerType *>( decl->get_type() ) ) {
190 if ( FunctionType *funType = dynamic_cast< FunctionType *>( ptrType->get_base() ) ) {
191 if ( funType->get_parameters().size() == 2 ) {
192 if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) {
193 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) {
194 if ( TypeInstType *typeInst2 = dynamic_cast< TypeInstType *>( funType->get_parameters().back()->get_type() ) ) {
195 if ( typeInst->get_name() == typeInst2->get_name() ) {
196 name = typeInst->get_name();
197 return true;
198 } // if
199 } // if
200 } // if
201 } // if
202 } // if
203 } // if
204 } // if
205 } // if
206 return false;
207 }
208
209 void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) {
210 // what if a nested function uses an assignment operator?
211 // assignOps.clear();
212 for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
213 for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) {
214 std::string typeName;
215 if ( checkAssignment( *assert, typeName ) ) {
216 assignOps[ typeName ] = *assert;
217 } // if
218 } // for
219 } // for
220 }
221
222 DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) {
223 if ( functionDecl->get_statements() ) { // empty routine body ?
224 doBeginScope();
225 TyVarMap oldtyVars = scopeTyVars;
226 std::map< std::string, DeclarationWithType *> oldassignOps = assignOps;
227 DeclarationWithType *oldRetval = retval;
228 bool oldUseRetval = useRetval;
229
230 // process polymorphic return value
231 retval = 0;
232 std::string typeName;
233 if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
234 retval = functionDecl->get_functionType()->get_returnVals().front();
235
236 // give names to unnamed return values
237 if ( retval->get_name() == "" ) {
238 retval->set_name( "_retparm" );
239 retval->set_linkage( LinkageSpec::C );
240 } // if
241 } // if
242
243 FunctionType *functionType = functionDecl->get_functionType();
244 makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
245 findAssignOps( functionDecl->get_functionType()->get_forall() );
246
247 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
248 std::list< FunctionType *> functions;
249 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
250 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
251 findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter );
252 } // for
253 } // for
254 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
255 findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter );
256 } // for
257 AdapterMap & adapters = Pass1::adapters.top();
258 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
259 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
260 if ( adapters.find( mangleName ) == adapters.end() ) {
261 std::string adapterName = makeAdapterName( mangleName );
262 adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) );
263 } // if
264 } // for
265
266 functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
267
268 scopeTyVars = oldtyVars;
269 assignOps = oldassignOps;
270 // std::cerr << "end FunctionDecl: ";
271 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
272 // std::cerr << i->first << " ";
273 // }
274 // std::cerr << "\n";
275 retval = oldRetval;
276 useRetval = oldUseRetval;
277 doEndScope();
278 } // if
279 return functionDecl;
280 }
281
282 TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) {
283 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
284 return Mutator::mutate( typeDecl );
285 }
286
287 Expression *Pass1::mutate( CommaExpr *commaExpr ) {
288 bool oldUseRetval = useRetval;
289 useRetval = false;
290 commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
291 useRetval = oldUseRetval;
292 commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
293 return commaExpr;
294 }
295
296 Expression *Pass1::mutate( ConditionalExpr *condExpr ) {
297 bool oldUseRetval = useRetval;
298 useRetval = false;
299 condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
300 useRetval = oldUseRetval;
301 condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
302 condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
303 return condExpr;
304
305 }
306
307 void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
308 for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
309 ResolvExpr::EqvClass eqvClass;
310 assert( env );
311 if ( tyParm->second == TypeDecl::Any ) {
312 Type *concrete = env->lookup( tyParm->first );
313 if ( concrete ) {
314 arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
315 arg++;
316 arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) );
317 arg++;
318 } else {
319 throw SemanticError( "unbound type variable in application ", appExpr );
320 } // if
321 } // if
322 } // for
323 }
324
325 ObjectDecl *Pass1::makeTemporary( Type *type ) {
326 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
327 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
328 return newObj;
329 }
330
331 Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) {
332 // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous.
333 // if ( useRetval ) {
334 // assert( retval );
335 // arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
336 // arg++;
337 // } else {
338
339 // Create temporary to hold return value of polymorphic function and produce that temporary as a result
340 // using a comma expression. Possibly change comma expression into statement expression "{}" for multiple
341 // return values.
342 ObjectDecl *newObj = makeTemporary( retType->clone() );
343 Expression *paramExpr = new VariableExpr( newObj );
344 // If the type of the temporary is not polymorphic, box temporary by taking its address; otherwise the
345 // temporary is already boxed and can be used directly.
346 if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) {
347 paramExpr = new AddressExpr( paramExpr );
348 } // if
349 arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call
350 arg++;
351 // Build a comma expression to call the function and emulate a normal return.
352 CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
353 commaExpr->set_env( appExpr->get_env() );
354 appExpr->set_env( 0 );
355 return commaExpr;
356 // } // if
357 // return appExpr;
358 }
359
360 Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) {
361 ResolvExpr::EqvClass eqvClass;
362 assert( env );
363 Type *concrete = env->lookup( typeName );
364 if ( concrete == 0 ) {
365 throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
366 } // if
367 return addRetParam( appExpr, function, concrete, arg );
368 }
369
370 Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
371 Expression *ret = appExpr;
372 if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) {
373 ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
374 } // if
375 std::string mangleName = mangleAdapterName( function, tyVars );
376 std::string adapterName = makeAdapterName( mangleName );
377
378 appExpr->get_args().push_front( appExpr->get_function() );
379 appExpr->set_function( new NameExpr( adapterName ) );
380
381 return ret;
382 }
383
384 void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) {
385 assert( ! arg->get_results().empty() );
386// if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) {
387 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( param );
388 if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) {
389 if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
390 // if the argument's type is a type parameter, we don't need to box again!
391 return;
392 } else if ( arg->get_results().front()->get_isLvalue() ) {
393 // VariableExpr and MemberExpr are lvalues
394 arg = new AddressExpr( arg );
395 } else {
396 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
397 newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
398 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
399 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
400 assign->get_args().push_back( new VariableExpr( newObj ) );
401 assign->get_args().push_back( arg );
402 stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
403 arg = new AddressExpr( new VariableExpr( newObj ) );
404 } // if
405 } // if
406// }
407 }
408
409 void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) {
410 Type *newType = formal->clone();
411 std::list< FunctionType *> functions;
412 // instead of functions needing adapters, this really ought to look for
413 // any function mentioning a polymorphic type
414 findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
415 if ( ! functions.empty() ) {
416 actual = new CastExpr( actual, newType );
417 } else {
418 delete newType;
419 } // if
420 }
421
422 void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
423 for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
424 assert( arg != appExpr->get_args().end() );
425 addCast( *arg, (*param)->get_type(), exprTyVars );
426 boxParam( (*param)->get_type(), *arg, exprTyVars );
427 } // for
428 }
429
430 void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
431 std::list< Expression *>::iterator cur = arg;
432 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
433 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
434 InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
435 assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" );
436 Expression *newExpr = inferParam->second.expr->clone();
437 addCast( newExpr, (*assert)->get_type(), tyVars );
438 boxParam( (*assert)->get_type(), newExpr, tyVars );
439 appExpr->get_args().insert( cur, newExpr );
440 } // for
441 } // for
442 }
443
444 void makeRetParm( FunctionType *funcType ) {
445 DeclarationWithType *retParm = funcType->get_returnVals().front();
446
447 // make a new parameter that is a pointer to the type of the old return value
448 retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
449 funcType->get_parameters().push_front( retParm );
450
451 // we don't need the return value any more
452 funcType->get_returnVals().clear();
453 }
454
455 FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) {
456 // actually make the adapter type
457 FunctionType *adapter = adaptee->clone();
458 if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
459 makeRetParm( adapter );
460 } // if
461 adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
462 return adapter;
463 }
464
465 Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) {
466 assert( param );
467 assert( arg );
468 if ( isPolyType( realParam->get_type(), tyVars ) ) {
469// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) {
470// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() );
471// } else {
472 if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) {
473 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
474 deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
475 deref->get_results().push_back( arg->get_type()->clone() );
476 return deref;
477 } // if
478// }
479 } // if
480 return new VariableExpr( param );
481 }
482
483 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 ) {
484 UniqueName paramNamer( "_p" );
485 for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
486 if ( (*param)->get_name() == "" ) {
487 (*param)->set_name( paramNamer.newName() );
488 (*param)->set_linkage( LinkageSpec::C );
489 } // if
490 adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) );
491 } // for
492 }
493
494
495
496 FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
497 FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
498 adapterType = ScrubTyVars::scrub( adapterType, tyVars );
499 DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
500 adapteeDecl->set_name( "_adaptee" );
501 ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
502 Statement *bodyStmt;
503
504 std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
505 std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
506 std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
507 for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
508 assert( tyArg != realType->get_forall().end() );
509 std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin();
510 std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin();
511 std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin();
512 for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
513 assert( assertArg != (*tyArg)->get_assertions().end() );
514 adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) );
515 } // for
516 } // for
517
518 std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
519 std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
520 std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
521 param++; // skip adaptee parameter
522 if ( realType->get_returnVals().empty() ) {
523 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
524 bodyStmt = new ExprStmt( noLabels, adapteeApp );
525 } else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
526 if ( (*param)->get_name() == "" ) {
527 (*param)->set_name( "_ret" );
528 (*param)->set_linkage( LinkageSpec::C );
529 } // if
530 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
531 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
532 deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
533 assign->get_args().push_back( deref );
534 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
535 assign->get_args().push_back( adapteeApp );
536 bodyStmt = new ExprStmt( noLabels, assign );
537 } else {
538 // adapter for a function that returns a monomorphic value
539 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
540 bodyStmt = new ReturnStmt( noLabels, adapteeApp );
541 } // if
542 CompoundStmt *adapterBody = new CompoundStmt( noLabels );
543 adapterBody->get_kids().push_back( bodyStmt );
544 std::string adapterName = makeAdapterName( mangleName );
545 return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
546 }
547
548 void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
549 // collect a list of function types passed as parameters or implicit parameters (assertions)
550 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
551 std::list< FunctionType *> functions;
552 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
553 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
554 findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
555 } // for
556 } // for
557 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
558 findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
559 } // for
560
561 // parameter function types for which an appropriate adapter has been generated. we cannot use the types
562 // after applying substitutions, since two different parameter types may be unified to the same type
563 std::set< std::string > adaptersDone;
564
565 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
566 FunctionType *originalFunction = (*funType)->clone();
567 FunctionType *realFunction = (*funType)->clone();
568 std::string mangleName = SymTab::Mangler::mangle( realFunction );
569
570 // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this
571 // pre-substitution parameter function type.
572 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
573 adaptersDone.insert( adaptersDone.begin(), mangleName );
574
575 // apply substitution to type variables to figure out what the adapter's type should look like
576 assert( env );
577 env->apply( realFunction );
578 mangleName = SymTab::Mangler::mangle( realFunction );
579 mangleName += makePolyMonoSuffix( originalFunction, exprTyVars );
580
581 AdapterMap & adapters = Pass1::adapters.top();
582 AdapterMap::iterator adapter = adapters.find( mangleName );
583 if ( adapter == adapters.end() ) {
584 // adapter has not been created yet in the current scope, so define it
585 FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars );
586 adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) );
587 stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
588 } // if
589 assert( adapter != adapters.end() );
590
591 // add the appropriate adapter as a parameter
592 appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
593 } // if
594 } // for
595 } // passAdapters
596
597 Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, Type *polyType, bool isIncr ) {
598 NameExpr *opExpr;
599 if ( isIncr ) {
600 opExpr = new NameExpr( "?+=?" );
601 } else {
602 opExpr = new NameExpr( "?-=?" );
603 } // if
604 UntypedExpr *addAssign = new UntypedExpr( opExpr );
605 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
606 addAssign->get_args().push_back( address->get_arg() );
607 } else {
608 addAssign->get_args().push_back( appExpr->get_args().front() );
609 } // if
610 addAssign->get_args().push_back( new NameExpr( sizeofName( polyType ) ) );
611 addAssign->get_results().front() = appExpr->get_results().front()->clone();
612 if ( appExpr->get_env() ) {
613 addAssign->set_env( appExpr->get_env() );
614 appExpr->set_env( 0 );
615 } // if
616 appExpr->get_args().clear();
617 delete appExpr;
618 return addAssign;
619 }
620
621 Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) {
622 if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) {
623 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
624 if ( varExpr->get_var()->get_name() == "?[?]" ) {
625 assert( ! appExpr->get_results().empty() );
626 assert( appExpr->get_args().size() == 2 );
627 Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
628 Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
629 assert( ! baseType1 || ! baseType2 );
630 UntypedExpr *ret = 0;
631 if ( baseType1 || baseType2 ) {
632 ret = new UntypedExpr( new NameExpr( "?+?" ) );
633 } // if
634 if ( baseType1 ) {
635 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
636 multiply->get_args().push_back( appExpr->get_args().back() );
637 multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
638 ret->get_args().push_back( appExpr->get_args().front() );
639 ret->get_args().push_back( multiply );
640 } else if ( baseType2 ) {
641 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
642 multiply->get_args().push_back( appExpr->get_args().front() );
643 multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
644 ret->get_args().push_back( multiply );
645 ret->get_args().push_back( appExpr->get_args().back() );
646 } // if
647 if ( baseType1 || baseType2 ) {
648 ret->get_results().push_front( appExpr->get_results().front()->clone() );
649 if ( appExpr->get_env() ) {
650 ret->set_env( appExpr->get_env() );
651 appExpr->set_env( 0 );
652 } // if
653 appExpr->get_args().clear();
654 delete appExpr;
655 return ret;
656 } // if
657 } else if ( varExpr->get_var()->get_name() == "*?" ) {
658 assert( ! appExpr->get_results().empty() );
659 assert( ! appExpr->get_args().empty() );
660 if ( isPolyType( appExpr->get_results().front(), scopeTyVars, env ) ) {
661 Expression *ret = appExpr->get_args().front();
662 delete ret->get_results().front();
663 ret->get_results().front() = appExpr->get_results().front()->clone();
664 if ( appExpr->get_env() ) {
665 ret->set_env( appExpr->get_env() );
666 appExpr->set_env( 0 );
667 } // if
668 appExpr->get_args().clear();
669 delete appExpr;
670 return ret;
671 } // if
672 } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) {
673 assert( ! appExpr->get_results().empty() );
674 assert( appExpr->get_args().size() == 1 );
675 if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
676 Type *tempType = appExpr->get_results().front()->clone();
677 if ( env ) {
678 env->apply( tempType );
679 } // if
680 ObjectDecl *newObj = makeTemporary( tempType );
681 VariableExpr *tempExpr = new VariableExpr( newObj );
682 UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
683 assignExpr->get_args().push_back( tempExpr->clone() );
684 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
685 assignExpr->get_args().push_back( address->get_arg()->clone() );
686 } else {
687 assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
688 } // if
689 CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) );
690 return new CommaExpr( firstComma, tempExpr );
691 } // if
692 } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) {
693 assert( ! appExpr->get_results().empty() );
694 assert( appExpr->get_args().size() == 1 );
695 if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
696 return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" );
697 } // if
698 } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) {
699 assert( ! appExpr->get_results().empty() );
700 assert( appExpr->get_args().size() == 2 );
701 Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
702 Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
703 if ( baseType1 && baseType2 ) {
704 UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
705 divide->get_args().push_back( appExpr );
706 divide->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
707 divide->get_results().push_front( appExpr->get_results().front()->clone() );
708 if ( appExpr->get_env() ) {
709 divide->set_env( appExpr->get_env() );
710 appExpr->set_env( 0 );
711 } // if
712 return divide;
713 } else if ( baseType1 ) {
714 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
715 multiply->get_args().push_back( appExpr->get_args().back() );
716 multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
717 appExpr->get_args().back() = multiply;
718 } else if ( baseType2 ) {
719 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
720 multiply->get_args().push_back( appExpr->get_args().front() );
721 multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
722 appExpr->get_args().front() = multiply;
723 } // if
724 } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) {
725 assert( ! appExpr->get_results().empty() );
726 assert( appExpr->get_args().size() == 2 );
727 Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env );
728 if ( baseType ) {
729 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
730 multiply->get_args().push_back( appExpr->get_args().back() );
731 multiply->get_args().push_back( new NameExpr( sizeofName( baseType ) ) );
732 appExpr->get_args().back() = multiply;
733 } // if
734 } // if
735 return appExpr;
736 } // if
737 } // if
738 return 0;
739 }
740
741 Expression *Pass1::mutate( ApplicationExpr *appExpr ) {
742 // std::cerr << "mutate appExpr: ";
743 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
744 // std::cerr << i->first << " ";
745 // }
746 // std::cerr << "\n";
747 bool oldUseRetval = useRetval;
748 useRetval = false;
749 appExpr->get_function()->acceptMutator( *this );
750 mutateAll( appExpr->get_args(), *this );
751 useRetval = oldUseRetval;
752
753 assert( ! appExpr->get_function()->get_results().empty() );
754 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
755 assert( pointer );
756 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
757 assert( function );
758
759 if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
760 return newExpr;
761 } // if
762
763 Expression *ret = appExpr;
764
765 std::list< Expression *>::iterator arg = appExpr->get_args().begin();
766 std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
767
768 std::string typeName;
769 if ( isPolyRet( function, typeName ) ) {
770 ret = addPolyRetParam( appExpr, function, typeName, arg );
771 } else if ( needsAdapter( function, scopeTyVars ) ) {
772 // std::cerr << "needs adapter: ";
773 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
774 // std::cerr << i->first << " ";
775 // }
776 // std::cerr << "\n";
777 // change the application so it calls the adapter rather than the passed function
778 ret = applyAdapter( appExpr, function, arg, scopeTyVars );
779 } // if
780 arg = appExpr->get_args().begin();
781
782 TyVarMap exprTyVars;
783 makeTyVarMap( function, exprTyVars );
784
785 passTypeVars( appExpr, arg, exprTyVars );
786 addInferredParams( appExpr, function, arg, exprTyVars );
787
788 arg = paramBegin;
789
790 boxParams( appExpr, function, arg, exprTyVars );
791
792 passAdapters( appExpr, function, exprTyVars );
793
794 return ret;
795 }
796
797 Expression *Pass1::mutate( UntypedExpr *expr ) {
798 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
799 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
800 if ( name->get_name() == "*?" ) {
801 Expression *ret = expr->get_args().front();
802 expr->get_args().clear();
803 delete expr;
804 return ret->acceptMutator( *this );
805 } // if
806 } // if
807 } // if
808 return PolyMutator::mutate( expr );
809 }
810
811 Expression *Pass1::mutate( AddressExpr *addrExpr ) {
812 assert( ! addrExpr->get_arg()->get_results().empty() );
813
814 bool needs = false;
815 if ( UntypedExpr *expr = dynamic_cast< UntypedExpr *>( addrExpr->get_arg() ) ) {
816 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
817 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
818 if ( name->get_name() == "*?" ) {
819 if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) {
820 assert( ! appExpr->get_function()->get_results().empty() );
821 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
822 assert( pointer );
823 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
824 assert( function );
825 needs = needsAdapter( function, scopeTyVars );
826 } // if
827 } // if
828 } // if
829 } // if
830 } // if
831 addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
832 if ( isPolyType( addrExpr->get_arg()->get_results().front(), scopeTyVars, env ) || needs ) {
833 Expression *ret = addrExpr->get_arg();
834 delete ret->get_results().front();
835 ret->get_results().front() = addrExpr->get_results().front()->clone();
836 addrExpr->set_arg( 0 );
837 delete addrExpr;
838 return ret;
839 } else {
840 return addrExpr;
841 } // if
842 }
843
844 Statement * Pass1::mutate( ReturnStmt *returnStmt ) {
845 if ( retval && returnStmt->get_expr() ) {
846 assert( ! returnStmt->get_expr()->get_results().empty() );
847 // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous.
848 // if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) {
849 // a cast expr on a polymorphic return value is either redundant or invalid
850 while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( returnStmt->get_expr() ) ) {
851 returnStmt->set_expr( castExpr->get_arg() );
852 returnStmt->get_expr()->set_env( castExpr->get_env() );
853 castExpr->set_env( 0 );
854 castExpr->set_arg( 0 );
855 delete castExpr;
856 } //while
857 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() );
858 assert( typeInst );
859 std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
860 if ( assignIter == assignOps.end() ) {
861 throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() );
862 } // if
863 ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
864 Expression *retParm = new NameExpr( retval->get_name() );
865 retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
866 assignExpr->get_args().push_back( retParm );
867 assignExpr->get_args().push_back( returnStmt->get_expr() );
868 stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
869 // } else {
870 // useRetval = true;
871 // stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) );
872 // useRetval = false;
873 // } // if
874 returnStmt->set_expr( 0 );
875 } else {
876 returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) );
877 } // if
878 return returnStmt;
879 }
880
881 Type * Pass1::mutate( PointerType *pointerType ) {
882 TyVarMap oldtyVars = scopeTyVars;
883 makeTyVarMap( pointerType, scopeTyVars );
884
885 Type *ret = Mutator::mutate( pointerType );
886
887 scopeTyVars = oldtyVars;
888 return ret;
889 }
890
891 Type * Pass1::mutate( FunctionType *functionType ) {
892 TyVarMap oldtyVars = scopeTyVars;
893 makeTyVarMap( functionType, scopeTyVars );
894
895 Type *ret = Mutator::mutate( functionType );
896
897 scopeTyVars = oldtyVars;
898 return ret;
899 }
900
901 void Pass1::doBeginScope() {
902 // push a copy of the current map
903 adapters.push(adapters.top());
904 }
905
906 void Pass1::doEndScope() {
907 adapters.pop();
908 }
909
910////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////
911
912 void Pass2::addAdapters( FunctionType *functionType ) {
913 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
914 std::list< FunctionType *> functions;
915 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
916 Type *orig = (*arg)->get_type();
917 findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
918 (*arg)->set_type( orig );
919 }
920 std::set< std::string > adaptersDone;
921 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
922 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
923 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
924 std::string adapterName = makeAdapterName( mangleName );
925 paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
926 adaptersDone.insert( adaptersDone.begin(), mangleName );
927 }
928 }
929// deleteAll( functions );
930 }
931
932 template< typename DeclClass >
933 DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) {
934 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
935
936 return ret;
937 }
938
939 DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
940 return handleDecl( functionDecl, functionDecl->get_functionType() );
941 }
942
943 ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
944 return handleDecl( objectDecl, objectDecl->get_type() );
945 }
946
947 TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
948 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
949 if ( typeDecl->get_base() ) {
950 return handleDecl( typeDecl, typeDecl->get_base() );
951 } else {
952 return Mutator::mutate( typeDecl );
953 }
954 }
955
956 TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
957 return handleDecl( typedefDecl, typedefDecl->get_base() );
958 }
959
960 Type * Pass2::mutate( PointerType *pointerType ) {
961 TyVarMap oldtyVars = scopeTyVars;
962 makeTyVarMap( pointerType, scopeTyVars );
963
964 Type *ret = Mutator::mutate( pointerType );
965
966 scopeTyVars = oldtyVars;
967 return ret;
968 }
969
970 Type *Pass2::mutate( FunctionType *funcType ) {
971 TyVarMap oldtyVars = scopeTyVars;
972 makeTyVarMap( funcType, scopeTyVars );
973
974 std::string typeName;
975 if ( isPolyRet( funcType, typeName ) ) {
976 DeclarationWithType *ret = funcType->get_returnVals().front();
977 ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) );
978 funcType->get_parameters().push_front( ret );
979 funcType->get_returnVals().pop_front();
980 }
981
982 std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
983 std::list< DeclarationWithType *> inferredParams;
984 ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
985// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
986 for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
987 ObjectDecl *sizeParm, *alignParm;
988 // add all size and alignment parameters to parameter list
989 if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
990 TypeInstType parmType( Type::Qualifiers(), (*tyParm)->get_name(), *tyParm );
991
992 sizeParm = newObj.clone();
993 sizeParm->set_name( sizeofName( &parmType ) );
994 last = funcType->get_parameters().insert( last, sizeParm );
995 ++last;
996
997 alignParm = newObj.clone();
998 alignParm->set_name( alignofName( &parmType ) );
999 last = funcType->get_parameters().insert( last, alignParm );
1000 ++last;
1001 }
1002 // move all assertions into parameter list
1003 for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
1004// *assert = (*assert)->acceptMutator( *this );
1005 inferredParams.push_back( *assert );
1006 }
1007 (*tyParm)->get_assertions().clear();
1008 }
1009 funcType->get_parameters().splice( last, inferredParams );
1010 addAdapters( funcType );
1011 mutateAll( funcType->get_returnVals(), *this );
1012 mutateAll( funcType->get_parameters(), *this );
1013
1014 scopeTyVars = oldtyVars;
1015 return funcType;
1016 }
1017
1018////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////
1019
1020 template< typename DeclClass >
1021 DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) {
1022 TyVarMap oldtyVars = scopeTyVars;
1023 makeTyVarMap( type, scopeTyVars );
1024
1025 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
1026 ScrubTyVars::scrub( decl, scopeTyVars );
1027
1028 scopeTyVars = oldtyVars;
1029 return ret;
1030 }
1031
1032 ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
1033 return handleDecl( objectDecl, objectDecl->get_type() );
1034 }
1035
1036 DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
1037 return handleDecl( functionDecl, functionDecl->get_functionType() );
1038 }
1039
1040 TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
1041 return handleDecl( typedefDecl, typedefDecl->get_base() );
1042 }
1043
1044 TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
1045// Initializer *init = 0;
1046// std::list< Expression *> designators;
1047// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1048// if ( typeDecl->get_base() ) {
1049// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
1050// }
1051// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );
1052
1053 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1054 return Mutator::mutate( typeDecl );
1055 }
1056
1057 Type * Pass3::mutate( PointerType *pointerType ) {
1058 TyVarMap oldtyVars = scopeTyVars;
1059 makeTyVarMap( pointerType, scopeTyVars );
1060
1061 Type *ret = Mutator::mutate( pointerType );
1062
1063 scopeTyVars = oldtyVars;
1064 return ret;
1065 }
1066
1067 Type * Pass3::mutate( FunctionType *functionType ) {
1068 TyVarMap oldtyVars = scopeTyVars;
1069 makeTyVarMap( functionType, scopeTyVars );
1070
1071 Type *ret = Mutator::mutate( functionType );
1072
1073 scopeTyVars = oldtyVars;
1074 return ret;
1075 }
1076
1077 Statement *Pass3::mutate( DeclStmt *declStmt ) {
1078 if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) {
1079 if ( isPolyType( objectDecl->get_type(), scopeTyVars ) ) {
1080 // change initialization of a polymorphic value object
1081 // to allocate storage with alloca
1082 Type *declType = objectDecl->get_type();
1083 UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
1084 alloc->get_args().push_back( new NameExpr( sizeofName( declType ) ) );
1085
1086 delete objectDecl->get_init();
1087
1088 std::list<Expression*> designators;
1089 objectDecl->set_init( new SingleInit( alloc, designators ) );
1090 }
1091 }
1092 return Mutator::mutate( declStmt );
1093 }
1094 } // anonymous namespace
1095} // namespace GenPoly
1096
1097// Local Variables: //
1098// tab-width: 4 //
1099// mode: c++ //
1100// compile-command: "make install" //
1101// End: //
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