source: src/SymTab/Autogen.cc@ 4e2a1137

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor deferred_resn demangler enum forall-pointer-decay 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 4e2a1137 was 39f84a4, checked in by Rob Schluntz <rschlunt@…>, 9 years ago

part-way through reorganizing ctor call generation so that it is more general
  • Property mode set to 100644
File size: 27.5 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 : Peter A. Buhr
12// Last Modified On : Tue Jul 12 17:47:17 2016
13// Update Count : 2
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 Type * SizeType = 0;
29
30 class AutogenerateRoutines : public Visitor {
31 public:
32 std::list< Declaration * > &get_declsToAdd() { return declsToAdd; }
33
34 virtual void visit( EnumDecl *enumDecl );
35 virtual void visit( StructDecl *structDecl );
36 virtual void visit( UnionDecl *structDecl );
37 virtual void visit( TypeDecl *typeDecl );
38 virtual void visit( TraitDecl *ctxDecl );
39 virtual void visit( FunctionDecl *functionDecl );
40
41 virtual void visit( FunctionType *ftype );
42 virtual void visit( PointerType *ftype );
43
44 virtual void visit( CompoundStmt *compoundStmt );
45 virtual void visit( SwitchStmt *switchStmt );
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 makeUnionFieldsAssignment( ObjectDecl *srcParam, ObjectDecl *dstParam, UnionInstType *unionType, OutputIterator out ) {
67 UntypedExpr *copy = new UntypedExpr( new NameExpr( "__builtin_memcpy" ) );
68 copy->get_args().push_back( new VariableExpr( dstParam ) );
69 copy->get_args().push_back( new AddressExpr( new VariableExpr( srcParam ) ) );
70 copy->get_args().push_back( new SizeofExpr( unionType ) );
71
72 *out++ = new ExprStmt( noLabels, copy );
73 }
74
75 //E ?=?(E volatile*, int),
76 // ?=?(E _Atomic volatile*, int);
77 void makeEnumFunctions( EnumDecl *enumDecl, EnumInstType *refType, unsigned int functionNesting, std::list< Declaration * > &declsToAdd ) {
78 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
79
80 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), refType ), 0 );
81 assignType->get_parameters().push_back( dstParam );
82
83 // void ?{}(E *); void ^?{}(E *);
84 FunctionType * ctorType = assignType->clone();
85 FunctionType * dtorType = assignType->clone();
86
87 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 );
88 assignType->get_parameters().push_back( srcParam );
89 // void ?{}(E *, E);
90 FunctionType *copyCtorType = assignType->clone();
91
92 // T ?=?(E *, E);
93 ObjectDecl *returnVal = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 );
94 assignType->get_returnVals().push_back( returnVal );
95
96 // xxx - should we also generate void ?{}(E *, int) and E ?{}(E *, E)?
97 // right now these cases work, but that might change.
98
99 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
100 // because each unit generates copies of the default routines for each aggregate.
101 // xxx - Temporary: make these functions intrinsic so they codegen as C assignment.
102 // Really they're something of a cross between instrinsic and autogen, so should
103 // probably make a new linkage type
104 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, assignType, new CompoundStmt( noLabels ), true, false );
105 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, ctorType, new CompoundStmt( noLabels ), true, false );
106 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, copyCtorType, new CompoundStmt( noLabels ), true, false );
107 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, dtorType, new CompoundStmt( noLabels ), true, false );
108 assignDecl->fixUniqueId();
109 ctorDecl->fixUniqueId();
110 copyCtorDecl->fixUniqueId();
111 dtorDecl->fixUniqueId();
112
113 // enum copy construct and assignment is just C-style assignment.
114 // this looks like a bad recursive call, but code gen will turn it into
115 // a C-style assignment.
116 // This happens before function pointer type conversion, so need to do it manually here
117 VariableExpr * assignVarExpr = new VariableExpr( assignDecl );
118 Type *& assignVarExprType = assignVarExpr->get_results().front();
119 assignVarExprType = new PointerType( Type::Qualifiers(), assignVarExprType );
120 ApplicationExpr * assignExpr = new ApplicationExpr( assignVarExpr );
121 assignExpr->get_args().push_back( new VariableExpr( dstParam ) );
122 assignExpr->get_args().push_back( new VariableExpr( srcParam ) );
123
124 // body is either return stmt or expr stmt
125 assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, assignExpr ) );
126 copyCtorDecl->get_statements()->get_kids().push_back( new ExprStmt( noLabels, assignExpr->clone() ) );
127
128 declsToAdd.push_back( assignDecl );
129 declsToAdd.push_back( ctorDecl );
130 declsToAdd.push_back( copyCtorDecl );
131 declsToAdd.push_back( dtorDecl );
132 }
133
134 /// Clones a reference type, replacing any parameters it may have with a clone of the provided list
135 template< typename GenericInstType >
136 GenericInstType *cloneWithParams( GenericInstType *refType, const std::list< Expression* >& params ) {
137 GenericInstType *clone = refType->clone();
138 clone->get_parameters().clear();
139 cloneAll( params, clone->get_parameters() );
140 return clone;
141 }
142
143 /// 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)
144 TypeDecl *cloneAndRename( TypeDecl *src, const std::string &name ) {
145 // TypeDecl *dst = new TypeDecl( name, src->get_storageClass(), 0, src->get_kind() );
146
147 // if ( src->get_kind() == TypeDecl::Any ) {
148 // TypeInstType *opParamType = new TypeInstType( Type::Qualifiers(), name, dst );
149 // FunctionType *opFunctionType = new FunctionType( Type::Qualifiers(), false );
150 // opFunctionType->get_parameters().push_back(
151 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), opParamType->clone() ), 0 ) );
152 // FunctionDecl *ctorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
153 // FunctionDecl *dtorAssert = new FunctionDecl( "^?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
154
155 // opFunctionType->get_parameters().push_back(
156 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType, 0 ) );
157 // FunctionDecl *copyCtorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false );
158
159 // opFunctionType->get_returnVals().push_back(
160 // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType->clone(), 0 ) );
161 // FunctionDecl *assignAssert = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType, 0, false, false );
162
163
164 // dst->get_assertions().push_back( assignAssert );
165 // dst->get_assertions().push_back( ctorAssert );
166 // dst->get_assertions().push_back( dtorAssert );
167 // dst->get_assertions().push_back( copyCtorAssert );
168 // }
169
170 TypeDecl *dst = new TypeDecl( src->get_name(), src->get_storageClass(), 0, src->get_kind() );
171 cloneAll(src->get_assertions(), dst->get_assertions());
172 return dst;
173 }
174
175 void makeStructMemberOp( ObjectDecl * dstParam, Expression * src, DeclarationWithType * field, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric, bool forward = true ) {
176 if ( isGeneric ) {
177 // rewrite member type in terms of the type variables on this operator
178 field = field->clone();
179 genericSubs.apply( field );
180
181 if ( src ) {
182 genericSubs.apply( src );
183 }
184 }
185
186 ObjectDecl * returnVal = NULL;
187 if ( ! func->get_functionType()->get_returnVals().empty() ) {
188 returnVal = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_returnVals().front() );
189 }
190
191 InitTweak::InitExpander srcParam( src );
192
193 // assign to destination (and return value if generic)
194 UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) );
195 derefExpr->get_args().push_back( new VariableExpr( dstParam ) );
196 Expression *dstselect = new MemberExpr( field, derefExpr );
197 genImplicitCall( srcParam, dstselect, func->get_name(), back_inserter( func->get_statements()->get_kids() ), field, forward );
198
199 if ( isGeneric && returnVal ) {
200 UntypedExpr *derefRet = new UntypedExpr( new NameExpr( "*?" ) );
201 derefRet->get_args().push_back( new VariableExpr( returnVal ) );
202 Expression *retselect = new MemberExpr( field, derefRet );
203 genImplicitCall( srcParam, retselect, func->get_name(), back_inserter( func->get_statements()->get_kids() ), field, forward );
204 } // if
205 }
206
207 template<typename Iterator>
208 void makeStructFunctionBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric, bool forward = true ) {
209 for ( ; member != end; ++member ) {
210 if ( DeclarationWithType *field = dynamic_cast< DeclarationWithType * >( *member ) ) { // otherwise some form of type declaration, e.g. Aggregate
211 // query the type qualifiers of this field and skip assigning it if it is marked const.
212 // If it is an array type, we need to strip off the array layers to find its qualifiers.
213 Type * type = field->get_type();
214 while ( ArrayType * at = dynamic_cast< ArrayType * >( type ) ) {
215 type = at->get_base();
216 }
217
218 if ( type->get_qualifiers().isConst && func->get_name() == "?=?" ) {
219 // don't assign const members, but do construct/destruct
220 continue;
221 }
222
223 if ( field->get_name() == "" ) {
224 // don't assign to anonymous members
225 // xxx - this is a temporary fix. Anonymous members tie into
226 // our inheritance model. I think the correct way to handle this is to
227 // cast the structure to the type of the member and let the resolver
228 // figure out whether it's valid and have a pass afterwards that fixes
229 // the assignment to use pointer arithmetic with the offset of the
230 // member, much like how generic type members are handled.
231 continue;
232 }
233
234 assert( ! func->get_functionType()->get_parameters().empty() );
235 ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().front() );
236 ObjectDecl * srcParam = NULL;
237 if ( func->get_functionType()->get_parameters().size() == 2 ) {
238 srcParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().back() );
239 }
240 // srcParam may be NULL, in which case we have default ctor/dtor
241 assert( dstParam );
242
243 Expression *srcselect = srcParam ? new MemberExpr( field, new VariableExpr( srcParam ) ) : NULL;
244 makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isGeneric, forward );
245 } // if
246 } // for
247 } // makeStructFunctionBody
248
249 /// generate the body of a constructor which takes parameters that match fields, e.g.
250 /// void ?{}(A *, int) and void?{}(A *, int, int) for a struct A which has two int fields.
251 template<typename Iterator>
252 void makeStructFieldCtorBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isGeneric ) {
253 FunctionType * ftype = func->get_functionType();
254 std::list<DeclarationWithType*> & params = ftype->get_parameters();
255 assert( params.size() >= 2 ); // should not call this function for default ctor, etc.
256
257 // skip 'this' parameter
258 ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( params.front() );
259 assert( dstParam );
260 std::list<DeclarationWithType*>::iterator parameter = params.begin()+1;
261 for ( ; member != end; ++member ) {
262 if ( DeclarationWithType * field = dynamic_cast<DeclarationWithType*>( *member ) ) {
263 if ( isUnnamedBitfield( dynamic_cast< ObjectDecl * > ( field ) ) ) {
264 // don't make a function whose parameter is an unnamed bitfield
265 continue;
266 } else if ( field->get_name() == "" ) {
267 // don't assign to anonymous members
268 // xxx - this is a temporary fix. Anonymous members tie into
269 // our inheritance model. I think the correct way to handle this is to
270 // cast the structure to the type of the member and let the resolver
271 // figure out whether it's valid and have a pass afterwards that fixes
272 // the assignment to use pointer arithmetic with the offset of the
273 // member, much like how generic type members are handled.
274 continue;
275 } else if ( parameter != params.end() ) {
276 // matching parameter, initialize field with copy ctor
277 Expression *srcselect = new VariableExpr(*parameter);
278 makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isGeneric );
279 ++parameter;
280 } else {
281 // no matching parameter, initialize field with default ctor
282 makeStructMemberOp( dstParam, NULL, field, func, genericSubs, isGeneric );
283 }
284 }
285 }
286 }
287
288 void makeStructFunctions( StructDecl *aggregateDecl, StructInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) {
289 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
290
291 // Make function polymorphic in same parameters as generic struct, if applicable
292 bool isGeneric = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for union)
293 std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters();
294 std::list< Expression* > structParams; // List of matching parameters to put on types
295 TypeSubstitution genericSubs; // Substitutions to make to member types of struct
296 for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) {
297 isGeneric = true;
298 TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() );
299 assignType->get_forall().push_back( typeParam );
300 TypeInstType *newParamType = new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam );
301 genericSubs.add( (*param)->get_name(), newParamType );
302 structParams.push_back( new TypeExpr( newParamType ) );
303 }
304
305 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, structParams ) ), 0 );
306 assignType->get_parameters().push_back( dstParam );
307
308 // void ?{}(T *); void ^?{}(T *);
309 FunctionType *ctorType = assignType->clone();
310 FunctionType *dtorType = assignType->clone();
311
312 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 );
313 assignType->get_parameters().push_back( srcParam );
314
315 // void ?{}(T *, T);
316 FunctionType *copyCtorType = assignType->clone();
317
318 // T ?=?(T *, T);
319 ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 );
320 assignType->get_returnVals().push_back( returnVal );
321
322 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
323 // because each unit generates copies of the default routines for each aggregate.
324 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false );
325 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false );
326 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, new CompoundStmt( noLabels ), true, false );
327 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false );
328 assignDecl->fixUniqueId();
329 ctorDecl->fixUniqueId();
330 copyCtorDecl->fixUniqueId();
331 dtorDecl->fixUniqueId();
332
333 // create constructors which take each member type as a parameter.
334 // for example, for struct A { int x, y; }; generate
335 // void ?{}(A *, int) and void ?{}(A *, int, int)
336 std::list<Declaration *> memCtors;
337 FunctionType * memCtorType = ctorType->clone();
338 for ( std::list<Declaration *>::iterator i = aggregateDecl->get_members().begin(); i != aggregateDecl->get_members().end(); ++i ) {
339 DeclarationWithType * member = dynamic_cast<DeclarationWithType *>( *i );
340 assert( member );
341 if ( isUnnamedBitfield( dynamic_cast< ObjectDecl * > ( member ) ) ) {
342 // don't make a function whose parameter is an unnamed bitfield
343 continue;
344 } else if ( member->get_name() == "" ) {
345 // don't assign to anonymous members
346 // xxx - this is a temporary fix. Anonymous members tie into
347 // our inheritance model. I think the correct way to handle this is to
348 // cast the structure to the type of the member and let the resolver
349 // figure out whether it's valid and have a pass afterwards that fixes
350 // the assignment to use pointer arithmetic with the offset of the
351 // member, much like how generic type members are handled.
352 continue;
353 }
354 memCtorType->get_parameters().push_back( new ObjectDecl( member->get_name(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, member->get_type()->clone(), 0 ) );
355 FunctionDecl * ctor = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, memCtorType->clone(), new CompoundStmt( noLabels ), true, false );
356 ctor->fixUniqueId();
357 makeStructFieldCtorBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctor, genericSubs, isGeneric );
358 memCtors.push_back( ctor );
359 }
360 delete memCtorType;
361
362 // generate appropriate calls to member ctor, assignment
363 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), assignDecl, genericSubs, isGeneric );
364 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctorDecl, genericSubs, isGeneric );
365 makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), copyCtorDecl, genericSubs, isGeneric );
366 // needs to do everything in reverse, so pass "forward" as false
367 makeStructFunctionBody( aggregateDecl->get_members().rbegin(), aggregateDecl->get_members().rend(), dtorDecl, genericSubs, isGeneric, false );
368
369 if ( ! isGeneric ) assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) );
370
371 declsToAdd.push_back( assignDecl );
372 declsToAdd.push_back( ctorDecl );
373 declsToAdd.push_back( copyCtorDecl );
374 declsToAdd.push_back( dtorDecl );
375 declsToAdd.splice( declsToAdd.end(), memCtors );
376 }
377
378 void makeUnionFunctions( UnionDecl *aggregateDecl, UnionInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) {
379 FunctionType *assignType = new FunctionType( Type::Qualifiers(), false );
380
381 // Make function polymorphic in same parameters as generic union, if applicable
382 bool isGeneric = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for struct)
383 std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters();
384 std::list< Expression* > unionParams; // List of matching parameters to put on types
385 for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) {
386 isGeneric = true;
387 TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() );
388 assignType->get_forall().push_back( typeParam );
389 unionParams.push_back( new TypeExpr( new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam ) ) );
390 }
391
392 ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, unionParams ) ), 0 );
393 assignType->get_parameters().push_back( dstParam );
394
395 // default ctor/dtor need only first parameter
396 FunctionType * ctorType = assignType->clone();
397 FunctionType * dtorType = assignType->clone();
398
399 ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 );
400 assignType->get_parameters().push_back( srcParam );
401
402 // copy ctor needs both parameters
403 FunctionType * copyCtorType = assignType->clone();
404
405 // assignment needs both and return value
406 ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 );
407 assignType->get_returnVals().push_back( returnVal );
408
409 // Routines at global scope marked "static" to prevent multiple definitions is separate translation units
410 // because each unit generates copies of the default routines for each aggregate.
411 FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false );
412 FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false );
413 FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, NULL, true, false );
414 FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false );
415
416 assignDecl->fixUniqueId();
417 ctorDecl->fixUniqueId();
418 copyCtorDecl->fixUniqueId();
419 dtorDecl->fixUniqueId();
420
421 makeUnionFieldsAssignment( srcParam, dstParam, cloneWithParams( refType, unionParams ), back_inserter( assignDecl->get_statements()->get_kids() ) );
422 if ( isGeneric ) makeUnionFieldsAssignment( srcParam, returnVal, cloneWithParams( refType, unionParams ), back_inserter( assignDecl->get_statements()->get_kids() ) );
423
424 if ( ! isGeneric ) assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) );
425
426 // body of assignment and copy ctor is the same
427 copyCtorDecl->set_statements( assignDecl->get_statements()->clone() );
428
429 declsToAdd.push_back( assignDecl );
430 declsToAdd.push_back( ctorDecl );
431 declsToAdd.push_back( copyCtorDecl );
432 declsToAdd.push_back( dtorDecl );
433 }
434
435 void AutogenerateRoutines::visit( EnumDecl *enumDecl ) {
436 if ( ! enumDecl->get_members().empty() ) {
437 EnumInstType *enumInst = new EnumInstType( Type::Qualifiers(), enumDecl->get_name() );
438 // enumInst->set_baseEnum( enumDecl );
439 // declsToAdd.push_back(
440 makeEnumFunctions( enumDecl, enumInst, functionNesting, declsToAdd );
441 }
442 }
443
444 void AutogenerateRoutines::visit( StructDecl *structDecl ) {
445 if ( ! structDecl->get_members().empty() && structsDone.find( structDecl->get_name() ) == structsDone.end() ) {
446 StructInstType structInst( Type::Qualifiers(), structDecl->get_name() );
447 structInst.set_baseStruct( structDecl );
448 makeStructFunctions( structDecl, &structInst, functionNesting, declsToAdd );
449 structsDone.insert( structDecl->get_name() );
450 } // if
451 }
452
453 void AutogenerateRoutines::visit( UnionDecl *unionDecl ) {
454 if ( ! unionDecl->get_members().empty() ) {
455 UnionInstType unionInst( Type::Qualifiers(), unionDecl->get_name() );
456 unionInst.set_baseUnion( unionDecl );
457 makeUnionFunctions( unionDecl, &unionInst, functionNesting, declsToAdd );
458 } // if
459 }
460
461 void AutogenerateRoutines::visit( TypeDecl *typeDecl ) {
462 CompoundStmt *stmts = 0;
463 TypeInstType *typeInst = new TypeInstType( Type::Qualifiers(), typeDecl->get_name(), false );
464 typeInst->set_baseType( typeDecl );
465 ObjectDecl *src = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst->clone(), 0 );
466 ObjectDecl *dst = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), typeInst->clone() ), 0 );
467 if ( typeDecl->get_base() ) {
468 // xxx - generate ctor/dtors for typedecls, e.g.
469 // otype T = int *;
470 stmts = new CompoundStmt( std::list< Label >() );
471 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
472 assign->get_args().push_back( new CastExpr( new VariableExpr( dst ), new PointerType( Type::Qualifiers(), typeDecl->get_base()->clone() ) ) );
473 assign->get_args().push_back( new CastExpr( new VariableExpr( src ), typeDecl->get_base()->clone() ) );
474 stmts->get_kids().push_back( new ReturnStmt( std::list< Label >(), assign ) );
475 } // if
476 FunctionType *type = new FunctionType( Type::Qualifiers(), false );
477 type->get_returnVals().push_back( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst, 0 ) );
478 type->get_parameters().push_back( dst );
479 type->get_parameters().push_back( src );
480 FunctionDecl *func = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::AutoGen, type, stmts, true, false );
481 declsToAdd.push_back( func );
482 }
483
484 void addDecls( std::list< Declaration * > &declsToAdd, std::list< Statement * > &statements, std::list< Statement * >::iterator i ) {
485 for ( std::list< Declaration * >::iterator decl = declsToAdd.begin(); decl != declsToAdd.end(); ++decl ) {
486 statements.insert( i, new DeclStmt( noLabels, *decl ) );
487 } // for
488 declsToAdd.clear();
489 }
490
491 void AutogenerateRoutines::visit( FunctionType *) {
492 // ensure that we don't add assignment ops for types defined as part of the function
493 }
494
495 void AutogenerateRoutines::visit( PointerType *) {
496 // ensure that we don't add assignment ops for types defined as part of the pointer
497 }
498
499 void AutogenerateRoutines::visit( TraitDecl *) {
500 // ensure that we don't add assignment ops for types defined as part of the trait
501 }
502
503 template< typename StmtClass >
504 inline void AutogenerateRoutines::visitStatement( StmtClass *stmt ) {
505 std::set< std::string > oldStructs = structsDone;
506 addVisit( stmt, *this );
507 structsDone = oldStructs;
508 }
509
510 void AutogenerateRoutines::visit( FunctionDecl *functionDecl ) {
511 maybeAccept( functionDecl->get_functionType(), *this );
512 acceptAll( functionDecl->get_oldDecls(), *this );
513 functionNesting += 1;
514 maybeAccept( functionDecl->get_statements(), *this );
515 functionNesting -= 1;
516 }
517
518 void AutogenerateRoutines::visit( CompoundStmt *compoundStmt ) {
519 visitStatement( compoundStmt );
520 }
521
522 void AutogenerateRoutines::visit( SwitchStmt *switchStmt ) {
523 visitStatement( switchStmt );
524 }
525} // SymTab
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