source: src/SymTab/Autogen.cc@ e01bfbc

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 with_gc
Last change on this file since e01bfbc was 9554d9b, checked in by Rob Schluntz <rschlunt@…>, 9 years ago

elide copy constructor calls in polymorphic code
  • Property mode set to 100644
File size: 27.4 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// Autogen.cc --
8//
9// Author : Rob Schluntz
10// Created On : Thu Mar 03 15:45:56 2016
11// Last Modified By : Rob Schluntz
12// Last Modified On : Thu May 26 14:14:09 2016
13// Update Count : 1
14//
15
16#include <list>
17#include <iterator>
18#include "SynTree/Visitor.h"
19#include "SynTree/Type.h"
20#include "SynTree/Statement.h"
21#include "SynTree/TypeSubstitution.h"
22#include "Common/utility.h"
23#include "AddVisit.h"
24#include "MakeLibCfa.h"
25#include "Autogen.h"
26
27namespace SymTab {
28 class AutogenerateRoutines : public Visitor {
29 public:
30 std::list< Declaration * > &get_declsToAdd() { return declsToAdd; }
31
32 virtual void visit( EnumDecl *enumDecl );
33 virtual void visit( StructDecl *structDecl );
34 virtual void visit( UnionDecl *structDecl );
35 virtual void visit( TypeDecl *typeDecl );
36 virtual void visit( TraitDecl *ctxDecl );
37 virtual void visit( FunctionDecl *functionDecl );
38
39 virtual void visit( FunctionType *ftype );
40 virtual void visit( PointerType *ftype );
41
42 virtual void visit( CompoundStmt *compoundStmt );
43 virtual void visit( SwitchStmt *switchStmt );
44 virtual void visit( ChooseStmt *chooseStmt );
45 // virtual void visit( CaseStmt *caseStmt );
46
47 AutogenerateRoutines() : functionNesting( 0 ) {}
48 private:
49 template< typename StmtClass > void visitStatement( StmtClass *stmt );
50
51 std::list< Declaration * > declsToAdd;
52 std::set< std::string > structsDone;
53 unsigned int functionNesting; // current level of nested functions
54 };
55
56 void autogenerateRoutines( std::list< Declaration * > &translationUnit ) {
57 AutogenerateRoutines visitor;
58 acceptAndAdd( translationUnit, visitor, false );
59 }
60
61 bool isUnnamedBitfield( ObjectDecl * obj ) {
62 return obj != NULL && obj->get_name() == "" && obj->get_bitfieldWidth() != NULL;
63 }
64
65 template< typename OutputIterator >
66 void makeScalarFunction( Expression *src, ObjectDecl *dstParam, DeclarationWithType *member, std::string fname, OutputIterator out ) {
67 ObjectDecl *obj = dynamic_cast<ObjectDecl *>( member );
68 // unnamed bit fields are not copied as they cannot be accessed
69 if ( isUnnamedBitfield( obj ) ) return;
70
71 // want to be able to generate assignment, ctor, and dtor generically,
72 // so fname is either ?=?, ?{}, or ^?{}
73 UntypedExpr *fExpr = new UntypedExpr( new NameExpr( fname ) );
74
75 UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) );
76 derefExpr->get_args().push_back( new VariableExpr( dstParam ) );
77
78 // do something special for unnamed members
79 Expression *dstselect = new AddressExpr( new MemberExpr( member, derefExpr ) );
80 fExpr->get_args().push_back( dstselect );
81
82 if ( src ) {
83 fExpr->get_args().push_back( src );
84 }
85
86 *out++ = new ExprStmt( noLabels, fExpr );
87 }
88
89 template< typename OutputIterator >
90 void makeUnionFieldsAssignment( ObjectDecl *srcParam, ObjectDecl *dstParam, UnionInstType *unionType, OutputIterator out ) {
91 UntypedExpr *copy = new UntypedExpr( new NameExpr( "__builtin_memcpy" ) );
92 copy->get_args().push_back( new VariableExpr( dstParam ) );
93 copy->get_args().push_back( new AddressExpr( new VariableExpr( srcParam ) ) );
94 copy->get_args().push_back( new SizeofExpr( unionType ) );
95
96 *out++ = new ExprStmt( noLabels, copy );
97 }
98
99 //E ?=?(E volatile*, int),
100 // ?=?(E _Atomic volatile*, int);
101 void makeEnumFunctions( EnumDecl *enumDecl, EnumInstType *refType, unsigned int functionNesting, std::list< Declaration * > &declsToAdd ) {
102 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
103
104 ObjectDecl *returnVal = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 );
105 assignType->get_returnVals().push_back( returnVal );
106
107 // need two assignment operators with different types
108 FunctionType * assignType2 = assignType->clone();
109
110 // E ?=?(E volatile *, E)
111 Type *etype = refType->clone();
112 // etype->get_qualifiers() += Type::Qualifiers(false, true, false, false, false, false);
113
114 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), etype ), 0 );
115 assignType->get_parameters().push_back( dstParam );
116
117 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, etype->clone(), 0 );
118 assignType->get_parameters().push_back( srcParam );
119
120 // E ?=?(E volatile *, int)
121 assignType2->get_parameters().push_back( dstParam->clone() );
122 BasicType * paramType = new BasicType(Type::Qualifiers(), BasicType::SignedInt);
123 ObjectDecl *srcParam2 = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, paramType, 0 );
124 assignType2->get_parameters().push_back( srcParam2 );
125
126 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
127 // because each unit generates copies of the default routines for each aggregate.
128
129 // since there is no definition, these should not be inline
130 // make these intrinsic so that the code generator does not make use of them
131 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, assignType, 0, false, false );
132 assignDecl->fixUniqueId();
133 FunctionDecl *assignDecl2 = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, assignType2, 0, false, false );
134 assignDecl2->fixUniqueId();
135
136 // these should be built in the same way that the prelude
137 // functions are, so build a list containing the prototypes
138 // and allow MakeLibCfa to autogenerate the bodies.
139 std::list< Declaration * > assigns;
140 assigns.push_back( assignDecl );
141 assigns.push_back( assignDecl2 );
142
143 LibCfa::makeLibCfa( assigns );
144
145 // need to remove the prototypes, since this may be nested in a routine
146 for (int start = 0, end = assigns.size()/2; start < end; start++) {
147 delete assigns.front();
148 assigns.pop_front();
149 } // for
150
151 declsToAdd.insert( declsToAdd.begin(), assigns.begin(), assigns.end() );
152 }
153
154 /// Clones a reference type, replacing any parameters it may have with a clone of the provided list
155 template< typename GenericInstType >
156 GenericInstType *cloneWithParams( GenericInstType *refType, const std::list< Expression* >& params ) {
157 GenericInstType *clone = refType->clone();
158 clone->get_parameters().clear();
159 cloneAll( params, clone->get_parameters() );
160 return clone;
161 }
162
163 /// Creates a new type decl that's the same as src, but renamed and with only the ?=?, ?{} (default and copy), and ^?{} assertions (for complete types only)
164 TypeDecl *cloneAndRename( TypeDecl *src, const std::string &name ) {
165 // TypeDecl *dst = new TypeDecl( name, src->get_storageClass(), 0, src->get_kind() );
166
167 // if ( src->get_kind() == TypeDecl::Any ) {
168 // TypeInstType *opParamType = new TypeInstType( Type::Qualifiers(), name, dst );
169 // FunctionType *opFunctionType = new FunctionType( Type::Qualifiers(), false );
170 // opFunctionType->get_parameters().push_back(
171 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), opParamType->clone() ), 0 ) );
172 // FunctionDecl *ctorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
173 // FunctionDecl *dtorAssert = new FunctionDecl( "^?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
174
175 // opFunctionType->get_parameters().push_back(
176 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType, 0 ) );
177 // FunctionDecl *copyCtorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
178
179 // opFunctionType->get_returnVals().push_back(
180 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType->clone(), 0 ) );
181 // FunctionDecl *assignAssert = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType, 0, false, false );
182
183
184 // dst->get_assertions().push_back( assignAssert );
185 // dst->get_assertions().push_back( ctorAssert );
186 // dst->get_assertions().push_back( dtorAssert );
187 // dst->get_assertions().push_back( copyCtorAssert );
188 // }
189
190 TypeDecl *dst = new TypeDecl( src->get_name(), src->get_storageClass(), 0, src->get_kind() );
191 cloneAll(src->get_assertions(), dst->get_assertions());
192 return dst;
193 }
194
195 void makeStructMemberOp( ObjectDecl * dstParam, Expression * src, DeclarationWithType * field, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric, bool forward = true ) {
196 if ( isGeneric ) {
197 // rewrite member type in terms of the type variables on this operator
198 field = field->clone();
199 genericSubs.apply( field );
200
201 if ( src ) {
202 genericSubs.apply( src );
203 }
204 }
205
206 ObjectDecl * returnVal = NULL;
207 if ( ! func->get_functionType()->get_returnVals().empty() ) {
208 returnVal = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_returnVals().front() );
209 }
210
211 // assign to destination (and return value if generic)
212 if ( ArrayType *array = dynamic_cast< ArrayType * >( field->get_type() ) ) {
213 UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) );
214 derefExpr->get_args().push_back( new VariableExpr( dstParam ) );
215 Expression *dstselect = new MemberExpr( field, derefExpr );
216
217 makeArrayFunction( src, dstselect, array, func->get_name(), back_inserter( func->get_statements()->get_kids() ), forward );
218 if ( isGeneric && returnVal ) {
219 UntypedExpr *derefRet = new UntypedExpr( new NameExpr( "*?" ) );
220 derefRet->get_args().push_back( new VariableExpr( returnVal ) );
221 Expression *retselect = new MemberExpr( field, derefRet );
222
223 makeArrayFunction( src, retselect, array, func->get_name(), back_inserter( func->get_statements()->get_kids() ), forward );
224 }
225 } else {
226 makeScalarFunction( src, dstParam, field, func->get_name(), back_inserter( func->get_statements()->get_kids() ) );
227 if ( isGeneric && returnVal ) makeScalarFunction( src, returnVal, field, func->get_name(), back_inserter( func->get_statements()->get_kids() ) );
228 } // if
229 }
230
231 template<typename Iterator>
232 void makeStructFunctionBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric, bool forward = true ) {
233 for ( ; member != end; ++member ) {
234 if ( DeclarationWithType *field = dynamic_cast< DeclarationWithType * >( *member ) ) { // otherwise some form of type declaration, e.g. Aggregate
235 // query the type qualifiers of this field and skip assigning it if it is marked const.
236 // If it is an array type, we need to strip off the array layers to find its qualifiers.
237 Type * type = field->get_type();
238 while ( ArrayType * at = dynamic_cast< ArrayType * >( type ) ) {
239 type = at->get_base();
240 }
241
242 if ( type->get_qualifiers().isConst ) {
243 // don't assign const members
244 continue;
245 }
246
247 if ( field->get_name() == "" ) {
248 // don't assign to anonymous members
249 // xxx - this is a temporary fix. Anonymous members tie into
250 // our inheritance model. I think the correct way to handle this is to
251 // cast the structure to the type of the member and let the resolver
252 // figure out whether it's valid and have a pass afterwards that fixes
253 // the assignment to use pointer arithmetic with the offset of the
254 // member, much like how generic type members are handled.
255 continue;
256 }
257
258 assert( ! func->get_functionType()->get_parameters().empty() );
259 ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().front() );
260 ObjectDecl * srcParam = NULL;
261 if ( func->get_functionType()->get_parameters().size() == 2 ) {
262 srcParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().back() );
263 }
264 // srcParam may be NULL, in which case we have default ctor/dtor
265 assert( dstParam );
266
267 Expression *srcselect = srcParam ? new MemberExpr( field, new VariableExpr( srcParam ) ) : NULL;
268 makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isGeneric, forward );
269 } // if
270 } // for
271 } // makeStructFunctionBody
272
273 /// generate the body of a constructor which takes parameters that match fields, e.g.
274 /// void ?{}(A *, int) and void?{}(A *, int, int) for a struct A which has two int fields.
275 template<typename Iterator>
276 void makeStructFieldCtorBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric ) {
277 FunctionType * ftype = func->get_functionType();
278 std::list<DeclarationWithType*> & params = ftype->get_parameters();
279 assert( params.size() >= 2 ); // should not call this function for default ctor, etc.
280
281 // skip 'this' parameter
282 ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( params.front() );
283 assert( dstParam );
284 std::list<DeclarationWithType*>::iterator parameter = params.begin()+1;
285 for ( ; member != end; ++member ) {
286 if ( DeclarationWithType * field = dynamic_cast<DeclarationWithType*>( *member ) ) {
287 if ( parameter != params.end() ) {
288 // matching parameter, initialize field with copy ctor
289 Expression *srcselect = new VariableExpr(*parameter);
290 makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isGeneric );
291 ++parameter;
292 } else {
293 // no matching parameter, initialize field with default ctor
294 makeStructMemberOp( dstParam, NULL, field, func, genericSubs, isGeneric );
295 }
296 }
297 }
298 }
299
300 void makeStructFunctions( StructDecl *aggregateDecl, StructInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) {
301 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
302
303 // Make function polymorphic in same parameters as generic struct, if applicable
304 bool isGeneric = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for union)
305 std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters();
306 std::list< Expression* > structParams; // List of matching parameters to put on types
307 TypeSubstitution genericSubs; // Substitutions to make to member types of struct
308 for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) {
309 isGeneric = true;
310 TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() );
311 assignType->get_forall().push_back( typeParam );
312 TypeInstType *newParamType = new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam );
313 genericSubs.add( (*param)->get_name(), newParamType );
314 structParams.push_back( new TypeExpr( newParamType ) );
315 }
316
317 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, structParams ) ), 0 );
318 assignType->get_parameters().push_back( dstParam );
319
320 // void ?{}(T *); void ^?{}(T *);
321 FunctionType *ctorType = assignType->clone();
322 FunctionType *dtorType = assignType->clone();
323
324 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 );
325 assignType->get_parameters().push_back( srcParam );
326
327 // void ?{}(T *, T);
328 FunctionType *copyCtorType = assignType->clone();
329
330 // T ?=?(T *, T);
331 ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 );
332 assignType->get_returnVals().push_back( returnVal );
333
334 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
335 // because each unit generates copies of the default routines for each aggregate.
336 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false );
337 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false );
338 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, new CompoundStmt( noLabels ), true, false );
339 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false );
340 assignDecl->fixUniqueId();
341 ctorDecl->fixUniqueId();
342 copyCtorDecl->fixUniqueId();
343 dtorDecl->fixUniqueId();
344
345 // create constructors which take each member type as a parameter.
346 // for example, for struct A { int x, y; }; generate
347 // void ?{}(A *, int) and void ?{}(A *, int, int)
348 std::list<Declaration *> memCtors;
349 FunctionType * memCtorType = ctorType->clone();
350 for ( std::list<Declaration *>::iterator i = aggregateDecl->get_members().begin(); i != aggregateDecl->get_members().end(); ++i ) {
351 DeclarationWithType * member = dynamic_cast<DeclarationWithType *>( *i );
352 assert( member );
353 if ( isUnnamedBitfield( dynamic_cast< ObjectDecl * > ( member ) ) ) {
354 // don't make a function whose parameter is an unnamed bitfield
355 continue;
356 } else if ( member->get_name() == "" ) {
357 // don't assign to anonymous members
358 // xxx - this is a temporary fix. Anonymous members tie into
359 // our inheritance model. I think the correct way to handle this is to
360 // cast the structure to the type of the member and let the resolver
361 // figure out whether it's valid and have a pass afterwards that fixes
362 // the assignment to use pointer arithmetic with the offset of the
363 // member, much like how generic type members are handled.
364 continue;
365 }
366 memCtorType->get_parameters().push_back( new ObjectDecl( member->get_name(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, member->get_type()->clone(), 0 ) );
367 FunctionDecl * ctor = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, memCtorType->clone(), new CompoundStmt( noLabels ), true, false );
368 ctor->fixUniqueId();
369 makeStructFieldCtorBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctor, genericSubs, isGeneric );
370 memCtors.push_back( ctor );
371 }
372 delete memCtorType;
373
374 // generate appropriate calls to member ctor, assignment
375 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), assignDecl, genericSubs, isGeneric );
376 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctorDecl, genericSubs, isGeneric );
377 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), copyCtorDecl, genericSubs, isGeneric );
378 // needs to do everything in reverse, so pass "forward" as false
379 makeStructFunctionBody( aggregateDecl->get_members().rbegin(), aggregateDecl->get_members().rend(), dtorDecl, genericSubs, isGeneric, false );
380
381 if ( ! isGeneric ) assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) );
382
383 declsToAdd.push_back( assignDecl );
384 declsToAdd.push_back( ctorDecl );
385 declsToAdd.push_back( copyCtorDecl );
386 declsToAdd.push_back( dtorDecl );
387 declsToAdd.splice( declsToAdd.end(), memCtors );
388 }
389
390 void makeUnionFunctions( UnionDecl *aggregateDecl, UnionInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) {
391 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
392
393 // Make function polymorphic in same parameters as generic union, if applicable
394 bool isGeneric = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for struct)
395 std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters();
396 std::list< Expression* > unionParams; // List of matching parameters to put on types
397 for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) {
398 isGeneric = true;
399 TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() );
400 assignType->get_forall().push_back( typeParam );
401 unionParams.push_back( new TypeExpr( new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam ) ) );
402 }
403
404 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, unionParams ) ), 0 );
405 assignType->get_parameters().push_back( dstParam );
406
407 // default ctor/dtor need only first parameter
408 FunctionType * ctorType = assignType->clone();
409 FunctionType * dtorType = assignType->clone();
410
411 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 );
412 assignType->get_parameters().push_back( srcParam );
413
414 // copy ctor needs both parameters
415 FunctionType * copyCtorType = assignType->clone();
416
417 // assignment needs both and return value
418 ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 );
419 assignType->get_returnVals().push_back( returnVal );
420
421 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
422 // because each unit generates copies of the default routines for each aggregate.
423 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false );
424 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false );
425 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, NULL, true, false );
426 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false );
427
428 assignDecl->fixUniqueId();
429 ctorDecl->fixUniqueId();
430 copyCtorDecl->fixUniqueId();
431 dtorDecl->fixUniqueId();
432
433 makeUnionFieldsAssignment( srcParam, dstParam, cloneWithParams( refType, unionParams ), back_inserter( assignDecl->get_statements()->get_kids() ) );
434 if ( isGeneric ) makeUnionFieldsAssignment( srcParam, returnVal, cloneWithParams( refType, unionParams ), back_inserter( assignDecl->get_statements()->get_kids() ) );
435
436 if ( ! isGeneric ) assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) );
437
438 // body of assignment and copy ctor is the same
439 copyCtorDecl->set_statements( assignDecl->get_statements()->clone() );
440
441 declsToAdd.push_back( assignDecl );
442 declsToAdd.push_back( ctorDecl );
443 declsToAdd.push_back( copyCtorDecl );
444 declsToAdd.push_back( dtorDecl );
445 }
446
447 void AutogenerateRoutines::visit( EnumDecl *enumDecl ) {
448 if ( ! enumDecl->get_members().empty() ) {
449 EnumInstType *enumInst = new EnumInstType( Type::Qualifiers(), enumDecl->get_name() );
450 // enumInst->set_baseEnum( enumDecl );
451 // declsToAdd.push_back(
452 makeEnumFunctions( enumDecl, enumInst, functionNesting, declsToAdd );
453 }
454 }
455
456 void AutogenerateRoutines::visit( StructDecl *structDecl ) {
457 if ( ! structDecl->get_members().empty() && structsDone.find( structDecl->get_name() ) == structsDone.end() ) {
458 StructInstType structInst( Type::Qualifiers(), structDecl->get_name() );
459 structInst.set_baseStruct( structDecl );
460 makeStructFunctions( structDecl, &structInst, functionNesting, declsToAdd );
461 structsDone.insert( structDecl->get_name() );
462 } // if
463 }
464
465 void AutogenerateRoutines::visit( UnionDecl *unionDecl ) {
466 if ( ! unionDecl->get_members().empty() ) {
467 UnionInstType unionInst( Type::Qualifiers(), unionDecl->get_name() );
468 unionInst.set_baseUnion( unionDecl );
469 makeUnionFunctions( unionDecl, &unionInst, functionNesting, declsToAdd );
470 } // if
471 }
472
473 void AutogenerateRoutines::visit( TypeDecl *typeDecl ) {
474 CompoundStmt *stmts = 0;
475 TypeInstType *typeInst = new TypeInstType( Type::Qualifiers(), typeDecl->get_name(), false );
476 typeInst->set_baseType( typeDecl );
477 ObjectDecl *src = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst->clone(), 0 );
478 ObjectDecl *dst = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), typeInst->clone() ), 0 );
479 if ( typeDecl->get_base() ) {
480 stmts = new CompoundStmt( std::list< Label >() );
481 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
482 assign->get_args().push_back( new CastExpr( new VariableExpr( dst ), new PointerType( Type::Qualifiers(), typeDecl->get_base()->clone() ) ) );
483 assign->get_args().push_back( new CastExpr( new VariableExpr( src ), typeDecl->get_base()->clone() ) );
484 stmts->get_kids().push_back( new ReturnStmt( std::list< Label >(), assign ) );
485 } // if
486 FunctionType *type = new FunctionType( Type::Qualifiers(), false );
487 type->get_returnVals().push_back( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst, 0 ) );
488 type->get_parameters().push_back( dst );
489 type->get_parameters().push_back( src );
490 FunctionDecl *func = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::AutoGen, type, stmts, false, false );
491 declsToAdd.push_back( func );
492 }
493
494 void addDecls( std::list< Declaration * > &declsToAdd, std::list< Statement * > &statements, std::list< Statement * >::iterator i ) {
495 for ( std::list< Declaration * >::iterator decl = declsToAdd.begin(); decl != declsToAdd.end(); ++decl ) {
496 statements.insert( i, new DeclStmt( noLabels, *decl ) );
497 } // for
498 declsToAdd.clear();
499 }
500
501 void AutogenerateRoutines::visit( FunctionType *) {
502 // ensure that we don't add assignment ops for types defined as part of the function
503 }
504
505 void AutogenerateRoutines::visit( PointerType *) {
506 // ensure that we don't add assignment ops for types defined as part of the pointer
507 }
508
509 void AutogenerateRoutines::visit( TraitDecl *) {
510 // ensure that we don't add assignment ops for types defined as part of the trait
511 }
512
513 template< typename StmtClass >
514 inline void AutogenerateRoutines::visitStatement( StmtClass *stmt ) {
515 std::set< std::string > oldStructs = structsDone;
516 addVisit( stmt, *this );
517 structsDone = oldStructs;
518 }
519
520 void AutogenerateRoutines::visit( FunctionDecl *functionDecl ) {
521 maybeAccept( functionDecl->get_functionType(), *this );
522 acceptAll( functionDecl->get_oldDecls(), *this );
523 functionNesting += 1;
524 maybeAccept( functionDecl->get_statements(), *this );
525 functionNesting -= 1;
526 }
527
528 void AutogenerateRoutines::visit( CompoundStmt *compoundStmt ) {
529 visitStatement( compoundStmt );
530 }
531
532 void AutogenerateRoutines::visit( SwitchStmt *switchStmt ) {
533 visitStatement( switchStmt );
534 }
535
536 void AutogenerateRoutines::visit( ChooseStmt *switchStmt ) {
537 visitStatement( switchStmt );
538 }
539
540 // void AutogenerateRoutines::visit( CaseStmt *caseStmt ) {
541 // visitStatement( caseStmt );
542 // }
543} // SymTab
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