source: src/SymTab/Autogen.cc@ 0caaa6a

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 0caaa6a was c738ca4, checked in by Rob Schluntz <rschlunt@…>, 9 years ago

add missing case to InitTweak::getFunctionName
  • Property mode set to 100644
File size: 28.2 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 *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), refType ), 0 );
105 assignType->get_parameters().push_back( dstParam );
106
107 // void ?{}(E *); void ^?{}(E *);
108 FunctionType * ctorType = assignType->clone();
109 FunctionType * dtorType = assignType->clone();
110
111 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 );
112 assignType->get_parameters().push_back( srcParam );
113 // void ?{}(E *, E);
114 FunctionType *copyCtorType = assignType->clone();
115
116 // T ?=?(E *, E);
117 ObjectDecl *returnVal = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 );
118 assignType->get_returnVals().push_back( returnVal );
119
120 // xxx - should we also generate void ?{}(E *, int) and E ?{}(E *, E)?
121 // right now these cases work, but that might change.
122
123 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
124 // because each unit generates copies of the default routines for each aggregate.
125 // xxx - Temporary: make these functions intrinsic so they codegen as C assignment.
126 // Really they're something of a cross between instrinsic and autogen, so should
127 // probably make a new linkage type
128 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, assignType, new CompoundStmt( noLabels ), true, false );
129 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, ctorType, new CompoundStmt( noLabels ), true, false );
130 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, copyCtorType, new CompoundStmt( noLabels ), true, false );
131 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, dtorType, new CompoundStmt( noLabels ), true, false );
132 assignDecl->fixUniqueId();
133 ctorDecl->fixUniqueId();
134 copyCtorDecl->fixUniqueId();
135 dtorDecl->fixUniqueId();
136
137 // enum copy construct and assignment is just C-style assignment.
138 // this looks like a bad recursive call, but code gen will turn it into
139 // a C-style assignment.
140 // This happens before function pointer type conversion, so need to do it manually here
141 VariableExpr * assignVarExpr = new VariableExpr( assignDecl );
142 Type *& assignVarExprType = assignVarExpr->get_results().front();
143 assignVarExprType = new PointerType( Type::Qualifiers(), assignVarExprType );
144 ApplicationExpr * assignExpr = new ApplicationExpr( assignVarExpr );
145 assignExpr->get_args().push_back( new VariableExpr( dstParam ) );
146 assignExpr->get_args().push_back( new VariableExpr( srcParam ) );
147
148 // body is either return stmt or expr stmt
149 assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, assignExpr ) );
150 copyCtorDecl->get_statements()->get_kids().push_back( new ExprStmt( noLabels, assignExpr->clone() ) );
151
152 declsToAdd.push_back( assignDecl );
153 declsToAdd.push_back( ctorDecl );
154 declsToAdd.push_back( copyCtorDecl );
155 declsToAdd.push_back( dtorDecl );
156 }
157
158 /// Clones a reference type, replacing any parameters it may have with a clone of the provided list
159 template< typename GenericInstType >
160 GenericInstType *cloneWithParams( GenericInstType *refType, const std::list< Expression* >& params ) {
161 GenericInstType *clone = refType->clone();
162 clone->get_parameters().clear();
163 cloneAll( params, clone->get_parameters() );
164 return clone;
165 }
166
167 /// 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)
168 TypeDecl *cloneAndRename( TypeDecl *src, const std::string &name ) {
169 // TypeDecl *dst = new TypeDecl( name, src->get_storageClass(), 0, src->get_kind() );
170
171 // if ( src->get_kind() == TypeDecl::Any ) {
172 // TypeInstType *opParamType = new TypeInstType( Type::Qualifiers(), name, dst );
173 // FunctionType *opFunctionType = new FunctionType( Type::Qualifiers(), false );
174 // opFunctionType->get_parameters().push_back(
175 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), opParamType->clone() ), 0 ) );
176 // FunctionDecl *ctorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
177 // FunctionDecl *dtorAssert = new FunctionDecl( "^?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
178
179 // opFunctionType->get_parameters().push_back(
180 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType, 0 ) );
181 // FunctionDecl *copyCtorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
182
183 // opFunctionType->get_returnVals().push_back(
184 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType->clone(), 0 ) );
185 // FunctionDecl *assignAssert = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType, 0, false, false );
186
187
188 // dst->get_assertions().push_back( assignAssert );
189 // dst->get_assertions().push_back( ctorAssert );
190 // dst->get_assertions().push_back( dtorAssert );
191 // dst->get_assertions().push_back( copyCtorAssert );
192 // }
193
194 TypeDecl *dst = new TypeDecl( src->get_name(), src->get_storageClass(), 0, src->get_kind() );
195 cloneAll(src->get_assertions(), dst->get_assertions());
196 return dst;
197 }
198
199 void makeStructMemberOp( ObjectDecl * dstParam, Expression * src, DeclarationWithType * field, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric, bool forward = true ) {
200 if ( isGeneric ) {
201 // rewrite member type in terms of the type variables on this operator
202 field = field->clone();
203 genericSubs.apply( field );
204
205 if ( src ) {
206 genericSubs.apply( src );
207 }
208 }
209
210 ObjectDecl * returnVal = NULL;
211 if ( ! func->get_functionType()->get_returnVals().empty() ) {
212 returnVal = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_returnVals().front() );
213 }
214
215 // assign to destination (and return value if generic)
216 if ( ArrayType *array = dynamic_cast< ArrayType * >( field->get_type() ) ) {
217 UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) );
218 derefExpr->get_args().push_back( new VariableExpr( dstParam ) );
219 Expression *dstselect = new MemberExpr( field, derefExpr );
220
221 makeArrayFunction( src, dstselect, array, func->get_name(), back_inserter( func->get_statements()->get_kids() ), forward );
222 if ( isGeneric && returnVal ) {
223 UntypedExpr *derefRet = new UntypedExpr( new NameExpr( "*?" ) );
224 derefRet->get_args().push_back( new VariableExpr( returnVal ) );
225 Expression *retselect = new MemberExpr( field, derefRet );
226
227 makeArrayFunction( src, retselect, array, func->get_name(), back_inserter( func->get_statements()->get_kids() ), forward );
228 }
229 } else {
230 makeScalarFunction( src, dstParam, field, func->get_name(), back_inserter( func->get_statements()->get_kids() ) );
231 if ( isGeneric && returnVal ) makeScalarFunction( src, returnVal, field, func->get_name(), back_inserter( func->get_statements()->get_kids() ) );
232 } // if
233 }
234
235 template<typename Iterator>
236 void makeStructFunctionBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric, bool forward = true ) {
237 for ( ; member != end; ++member ) {
238 if ( DeclarationWithType *field = dynamic_cast< DeclarationWithType * >( *member ) ) { // otherwise some form of type declaration, e.g. Aggregate
239 // query the type qualifiers of this field and skip assigning it if it is marked const.
240 // If it is an array type, we need to strip off the array layers to find its qualifiers.
241 Type * type = field->get_type();
242 while ( ArrayType * at = dynamic_cast< ArrayType * >( type ) ) {
243 type = at->get_base();
244 }
245
246 if ( type->get_qualifiers().isConst ) {
247 // don't assign const members
248 continue;
249 }
250
251 if ( field->get_name() == "" ) {
252 // don't assign to anonymous members
253 // xxx - this is a temporary fix. Anonymous members tie into
254 // our inheritance model. I think the correct way to handle this is to
255 // cast the structure to the type of the member and let the resolver
256 // figure out whether it's valid and have a pass afterwards that fixes
257 // the assignment to use pointer arithmetic with the offset of the
258 // member, much like how generic type members are handled.
259 continue;
260 }
261
262 assert( ! func->get_functionType()->get_parameters().empty() );
263 ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().front() );
264 ObjectDecl * srcParam = NULL;
265 if ( func->get_functionType()->get_parameters().size() == 2 ) {
266 srcParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().back() );
267 }
268 // srcParam may be NULL, in which case we have default ctor/dtor
269 assert( dstParam );
270
271 Expression *srcselect = srcParam ? new MemberExpr( field, new VariableExpr( srcParam ) ) : NULL;
272 makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isGeneric, forward );
273 } // if
274 } // for
275 } // makeStructFunctionBody
276
277 /// generate the body of a constructor which takes parameters that match fields, e.g.
278 /// void ?{}(A *, int) and void?{}(A *, int, int) for a struct A which has two int fields.
279 template<typename Iterator>
280 void makeStructFieldCtorBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric ) {
281 FunctionType * ftype = func->get_functionType();
282 std::list<DeclarationWithType*> & params = ftype->get_parameters();
283 assert( params.size() >= 2 ); // should not call this function for default ctor, etc.
284
285 // skip 'this' parameter
286 ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( params.front() );
287 assert( dstParam );
288 std::list<DeclarationWithType*>::iterator parameter = params.begin()+1;
289 for ( ; member != end; ++member ) {
290 if ( DeclarationWithType * field = dynamic_cast<DeclarationWithType*>( *member ) ) {
291 if ( parameter != params.end() ) {
292 // matching parameter, initialize field with copy ctor
293 Expression *srcselect = new VariableExpr(*parameter);
294 makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isGeneric );
295 ++parameter;
296 } else {
297 // no matching parameter, initialize field with default ctor
298 makeStructMemberOp( dstParam, NULL, field, func, genericSubs, isGeneric );
299 }
300 }
301 }
302 }
303
304 void makeStructFunctions( StructDecl *aggregateDecl, StructInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) {
305 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
306
307 // Make function polymorphic in same parameters as generic struct, if applicable
308 bool isGeneric = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for union)
309 std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters();
310 std::list< Expression* > structParams; // List of matching parameters to put on types
311 TypeSubstitution genericSubs; // Substitutions to make to member types of struct
312 for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) {
313 isGeneric = true;
314 TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() );
315 assignType->get_forall().push_back( typeParam );
316 TypeInstType *newParamType = new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam );
317 genericSubs.add( (*param)->get_name(), newParamType );
318 structParams.push_back( new TypeExpr( newParamType ) );
319 }
320
321 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, structParams ) ), 0 );
322 assignType->get_parameters().push_back( dstParam );
323
324 // void ?{}(T *); void ^?{}(T *);
325 FunctionType *ctorType = assignType->clone();
326 FunctionType *dtorType = assignType->clone();
327
328 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 );
329 assignType->get_parameters().push_back( srcParam );
330
331 // void ?{}(T *, T);
332 FunctionType *copyCtorType = assignType->clone();
333
334 // T ?=?(T *, T);
335 ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 );
336 assignType->get_returnVals().push_back( returnVal );
337
338 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
339 // because each unit generates copies of the default routines for each aggregate.
340 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false );
341 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false );
342 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, new CompoundStmt( noLabels ), true, false );
343 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false );
344 assignDecl->fixUniqueId();
345 ctorDecl->fixUniqueId();
346 copyCtorDecl->fixUniqueId();
347 dtorDecl->fixUniqueId();
348
349 // create constructors which take each member type as a parameter.
350 // for example, for struct A { int x, y; }; generate
351 // void ?{}(A *, int) and void ?{}(A *, int, int)
352 std::list<Declaration *> memCtors;
353 FunctionType * memCtorType = ctorType->clone();
354 for ( std::list<Declaration *>::iterator i = aggregateDecl->get_members().begin(); i != aggregateDecl->get_members().end(); ++i ) {
355 DeclarationWithType * member = dynamic_cast<DeclarationWithType *>( *i );
356 assert( member );
357 if ( isUnnamedBitfield( dynamic_cast< ObjectDecl * > ( member ) ) ) {
358 // don't make a function whose parameter is an unnamed bitfield
359 continue;
360 } else if ( member->get_name() == "" ) {
361 // don't assign to anonymous members
362 // xxx - this is a temporary fix. Anonymous members tie into
363 // our inheritance model. I think the correct way to handle this is to
364 // cast the structure to the type of the member and let the resolver
365 // figure out whether it's valid and have a pass afterwards that fixes
366 // the assignment to use pointer arithmetic with the offset of the
367 // member, much like how generic type members are handled.
368 continue;
369 }
370 memCtorType->get_parameters().push_back( new ObjectDecl( member->get_name(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, member->get_type()->clone(), 0 ) );
371 FunctionDecl * ctor = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, memCtorType->clone(), new CompoundStmt( noLabels ), true, false );
372 ctor->fixUniqueId();
373 makeStructFieldCtorBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctor, genericSubs, isGeneric );
374 memCtors.push_back( ctor );
375 }
376 delete memCtorType;
377
378 // generate appropriate calls to member ctor, assignment
379 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), assignDecl, genericSubs, isGeneric );
380 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctorDecl, genericSubs, isGeneric );
381 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), copyCtorDecl, genericSubs, isGeneric );
382 // needs to do everything in reverse, so pass "forward" as false
383 makeStructFunctionBody( aggregateDecl->get_members().rbegin(), aggregateDecl->get_members().rend(), dtorDecl, genericSubs, isGeneric, false );
384
385 if ( ! isGeneric ) assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) );
386
387 declsToAdd.push_back( assignDecl );
388 declsToAdd.push_back( ctorDecl );
389 declsToAdd.push_back( copyCtorDecl );
390 declsToAdd.push_back( dtorDecl );
391 declsToAdd.splice( declsToAdd.end(), memCtors );
392 }
393
394 void makeUnionFunctions( UnionDecl *aggregateDecl, UnionInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) {
395 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
396
397 // Make function polymorphic in same parameters as generic union, if applicable
398 bool isGeneric = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for struct)
399 std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters();
400 std::list< Expression* > unionParams; // List of matching parameters to put on types
401 for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) {
402 isGeneric = true;
403 TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() );
404 assignType->get_forall().push_back( typeParam );
405 unionParams.push_back( new TypeExpr( new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam ) ) );
406 }
407
408 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, unionParams ) ), 0 );
409 assignType->get_parameters().push_back( dstParam );
410
411 // default ctor/dtor need only first parameter
412 FunctionType * ctorType = assignType->clone();
413 FunctionType * dtorType = assignType->clone();
414
415 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 );
416 assignType->get_parameters().push_back( srcParam );
417
418 // copy ctor needs both parameters
419 FunctionType * copyCtorType = assignType->clone();
420
421 // assignment needs both and return value
422 ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 );
423 assignType->get_returnVals().push_back( returnVal );
424
425 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
426 // because each unit generates copies of the default routines for each aggregate.
427 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false );
428 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false );
429 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, NULL, true, false );
430 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false );
431
432 assignDecl->fixUniqueId();
433 ctorDecl->fixUniqueId();
434 copyCtorDecl->fixUniqueId();
435 dtorDecl->fixUniqueId();
436
437 makeUnionFieldsAssignment( srcParam, dstParam, cloneWithParams( refType, unionParams ), back_inserter( assignDecl->get_statements()->get_kids() ) );
438 if ( isGeneric ) makeUnionFieldsAssignment( srcParam, returnVal, cloneWithParams( refType, unionParams ), back_inserter( assignDecl->get_statements()->get_kids() ) );
439
440 if ( ! isGeneric ) assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) );
441
442 // body of assignment and copy ctor is the same
443 copyCtorDecl->set_statements( assignDecl->get_statements()->clone() );
444
445 declsToAdd.push_back( assignDecl );
446 declsToAdd.push_back( ctorDecl );
447 declsToAdd.push_back( copyCtorDecl );
448 declsToAdd.push_back( dtorDecl );
449 }
450
451 void AutogenerateRoutines::visit( EnumDecl *enumDecl ) {
452 if ( ! enumDecl->get_members().empty() ) {
453 EnumInstType *enumInst = new EnumInstType( Type::Qualifiers(), enumDecl->get_name() );
454 // enumInst->set_baseEnum( enumDecl );
455 // declsToAdd.push_back(
456 makeEnumFunctions( enumDecl, enumInst, functionNesting, declsToAdd );
457 }
458 }
459
460 void AutogenerateRoutines::visit( StructDecl *structDecl ) {
461 if ( ! structDecl->get_members().empty() && structsDone.find( structDecl->get_name() ) == structsDone.end() ) {
462 StructInstType structInst( Type::Qualifiers(), structDecl->get_name() );
463 structInst.set_baseStruct( structDecl );
464 makeStructFunctions( structDecl, &structInst, functionNesting, declsToAdd );
465 structsDone.insert( structDecl->get_name() );
466 } // if
467 }
468
469 void AutogenerateRoutines::visit( UnionDecl *unionDecl ) {
470 if ( ! unionDecl->get_members().empty() ) {
471 UnionInstType unionInst( Type::Qualifiers(), unionDecl->get_name() );
472 unionInst.set_baseUnion( unionDecl );
473 makeUnionFunctions( unionDecl, &unionInst, functionNesting, declsToAdd );
474 } // if
475 }
476
477 void AutogenerateRoutines::visit( TypeDecl *typeDecl ) {
478 CompoundStmt *stmts = 0;
479 TypeInstType *typeInst = new TypeInstType( Type::Qualifiers(), typeDecl->get_name(), false );
480 typeInst->set_baseType( typeDecl );
481 ObjectDecl *src = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst->clone(), 0 );
482 ObjectDecl *dst = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), typeInst->clone() ), 0 );
483 if ( typeDecl->get_base() ) {
484 // xxx - generate ctor/dtors for typedecls, e.g.
485 // otype T = int *;
486 stmts = new CompoundStmt( std::list< Label >() );
487 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
488 assign->get_args().push_back( new CastExpr( new VariableExpr( dst ), new PointerType( Type::Qualifiers(), typeDecl->get_base()->clone() ) ) );
489 assign->get_args().push_back( new CastExpr( new VariableExpr( src ), typeDecl->get_base()->clone() ) );
490 stmts->get_kids().push_back( new ReturnStmt( std::list< Label >(), assign ) );
491 } // if
492 FunctionType *type = new FunctionType( Type::Qualifiers(), false );
493 type->get_returnVals().push_back( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst, 0 ) );
494 type->get_parameters().push_back( dst );
495 type->get_parameters().push_back( src );
496 FunctionDecl *func = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::AutoGen, type, stmts, true, false );
497 declsToAdd.push_back( func );
498 }
499
500 void addDecls( std::list< Declaration * > &declsToAdd, std::list< Statement * > &statements, std::list< Statement * >::iterator i ) {
501 for ( std::list< Declaration * >::iterator decl = declsToAdd.begin(); decl != declsToAdd.end(); ++decl ) {
502 statements.insert( i, new DeclStmt( noLabels, *decl ) );
503 } // for
504 declsToAdd.clear();
505 }
506
507 void AutogenerateRoutines::visit( FunctionType *) {
508 // ensure that we don't add assignment ops for types defined as part of the function
509 }
510
511 void AutogenerateRoutines::visit( PointerType *) {
512 // ensure that we don't add assignment ops for types defined as part of the pointer
513 }
514
515 void AutogenerateRoutines::visit( TraitDecl *) {
516 // ensure that we don't add assignment ops for types defined as part of the trait
517 }
518
519 template< typename StmtClass >
520 inline void AutogenerateRoutines::visitStatement( StmtClass *stmt ) {
521 std::set< std::string > oldStructs = structsDone;
522 addVisit( stmt, *this );
523 structsDone = oldStructs;
524 }
525
526 void AutogenerateRoutines::visit( FunctionDecl *functionDecl ) {
527 maybeAccept( functionDecl->get_functionType(), *this );
528 acceptAll( functionDecl->get_oldDecls(), *this );
529 functionNesting += 1;
530 maybeAccept( functionDecl->get_statements(), *this );
531 functionNesting -= 1;
532 }
533
534 void AutogenerateRoutines::visit( CompoundStmt *compoundStmt ) {
535 visitStatement( compoundStmt );
536 }
537
538 void AutogenerateRoutines::visit( SwitchStmt *switchStmt ) {
539 visitStatement( switchStmt );
540 }
541
542 void AutogenerateRoutines::visit( ChooseStmt *switchStmt ) {
543 visitStatement( switchStmt );
544 }
545
546 // void AutogenerateRoutines::visit( CaseStmt *caseStmt ) {
547 // visitStatement( caseStmt );
548 // }
549} // SymTab
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