source: src/Common/PassVisitor.h@ 61255ad

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc
Last change on this file since 61255ad was 61255ad, checked in by Rob Schluntz <rschlunt@…>, 8 years ago

Add WithStmt SynTree node
  • Property mode set to 100644
File size: 19.5 KB
Line 
1#pragma once
2
3// IWYU pragma: private, include "Common/PassVisitor.h"
4
5#include <stack>
6
7#include "Common/utility.h"
8
9#include "SynTree/Mutator.h"
10#include "SynTree/Visitor.h"
11
12#include "SymTab/Indexer.h"
13
14#include "SynTree/Attribute.h"
15#include "SynTree/Initializer.h"
16#include "SynTree/Statement.h"
17#include "SynTree/Type.h"
18#include "SynTree/Declaration.h"
19#include "SynTree/Expression.h"
20#include "SynTree/Constant.h"
21#include "SynTree/TypeSubstitution.h"
22
23#include "PassVisitor.proto.h"
24
25//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
26// Templated visitor type
27// To use declare a PassVisitor< YOUR VISITOR TYPE >
28// The visitor type should specify the previsit/postvisit/premutate/postmutate for types that are desired.
29// Note: previsit/postvisit/premutate/postmutate must be **public** members
30//
31// Several additional features are available through inheritance
32// | WithTypeSubstitution - provides polymorphic TypeSubstitution * env for the current expression
33// | WithStmtsToAdd - provides the ability to insert statements before or after the current statement by adding new statements into
34// stmtsToAddBefore or stmtsToAddAfter respectively.
35// | WithShortCircuiting - provides the ability to skip visiting child nodes; set visit_children to false in pre{visit,mutate} to skip visiting children
36// | WithGuards - provides the ability to save/restore data like a LIFO stack; to save, call GuardValue with the variable to save, the variable
37// will automatically be restored to its previous value after the corresponding postvisit/postmutate teminates.
38//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
39template< typename pass_type >
40class PassVisitor final : public Visitor, public Mutator {
41public:
42
43 template< typename... Args >
44 PassVisitor(Args &&... args)
45 : pass( std::forward<Args>( args )... )
46 {
47 typedef PassVisitor<pass_type> this_t;
48 this_t * const * visitor = visitor_impl(pass, 0);
49 if(visitor) {
50 *const_cast<this_t **>( visitor ) = this;
51 }
52 }
53
54 virtual ~PassVisitor() = default;
55
56 pass_type pass;
57
58 virtual void visit( ObjectDecl * objectDecl ) override final;
59 virtual void visit( FunctionDecl * functionDecl ) override final;
60 virtual void visit( StructDecl * aggregateDecl ) override final;
61 virtual void visit( UnionDecl * aggregateDecl ) override final;
62 virtual void visit( EnumDecl * aggregateDecl ) override final;
63 virtual void visit( TraitDecl * aggregateDecl ) override final;
64 virtual void visit( TypeDecl * typeDecl ) override final;
65 virtual void visit( TypedefDecl * typeDecl ) override final;
66 virtual void visit( AsmDecl * asmDecl ) override final;
67
68 virtual void visit( CompoundStmt * compoundStmt ) override final;
69 virtual void visit( ExprStmt * exprStmt ) override final;
70 virtual void visit( AsmStmt * asmStmt ) override final;
71 virtual void visit( IfStmt * ifStmt ) override final;
72 virtual void visit( WhileStmt * whileStmt ) override final;
73 virtual void visit( ForStmt * forStmt ) override final;
74 virtual void visit( SwitchStmt * switchStmt ) override final;
75 virtual void visit( CaseStmt * caseStmt ) override final;
76 virtual void visit( BranchStmt * branchStmt ) override final;
77 virtual void visit( ReturnStmt * returnStmt ) override final;
78 virtual void visit( ThrowStmt * throwStmt ) override final;
79 virtual void visit( TryStmt * tryStmt ) override final;
80 virtual void visit( CatchStmt * catchStmt ) override final;
81 virtual void visit( FinallyStmt * finallyStmt ) override final;
82 virtual void visit( WaitForStmt * waitforStmt ) override final;
83 virtual void visit( WithStmt * withStmt ) override final;
84 virtual void visit( NullStmt * nullStmt ) override final;
85 virtual void visit( DeclStmt * declStmt ) override final;
86 virtual void visit( ImplicitCtorDtorStmt * impCtorDtorStmt ) override final;
87
88 virtual void visit( ApplicationExpr * applicationExpr ) override final;
89 virtual void visit( UntypedExpr * untypedExpr ) override final;
90 virtual void visit( NameExpr * nameExpr ) override final;
91 virtual void visit( CastExpr * castExpr ) override final;
92 virtual void visit( VirtualCastExpr * castExpr ) override final;
93 virtual void visit( AddressExpr * addressExpr ) override final;
94 virtual void visit( LabelAddressExpr * labAddressExpr ) override final;
95 virtual void visit( UntypedMemberExpr * memberExpr ) override final;
96 virtual void visit( MemberExpr * memberExpr ) override final;
97 virtual void visit( VariableExpr * variableExpr ) override final;
98 virtual void visit( ConstantExpr * constantExpr ) override final;
99 virtual void visit( SizeofExpr * sizeofExpr ) override final;
100 virtual void visit( AlignofExpr * alignofExpr ) override final;
101 virtual void visit( UntypedOffsetofExpr * offsetofExpr ) override final;
102 virtual void visit( OffsetofExpr * offsetofExpr ) override final;
103 virtual void visit( OffsetPackExpr * offsetPackExpr ) override final;
104 virtual void visit( AttrExpr * attrExpr ) override final;
105 virtual void visit( LogicalExpr * logicalExpr ) override final;
106 virtual void visit( ConditionalExpr * conditionalExpr ) override final;
107 virtual void visit( CommaExpr * commaExpr ) override final;
108 virtual void visit( TypeExpr * typeExpr ) override final;
109 virtual void visit( AsmExpr * asmExpr ) override final;
110 virtual void visit( ImplicitCopyCtorExpr * impCpCtorExpr ) override final;
111 virtual void visit( ConstructorExpr * ctorExpr ) override final;
112 virtual void visit( CompoundLiteralExpr * compLitExpr ) override final;
113 virtual void visit( RangeExpr * rangeExpr ) override final;
114 virtual void visit( UntypedTupleExpr * tupleExpr ) override final;
115 virtual void visit( TupleExpr * tupleExpr ) override final;
116 virtual void visit( TupleIndexExpr * tupleExpr ) override final;
117 virtual void visit( TupleAssignExpr * assignExpr ) override final;
118 virtual void visit( StmtExpr * stmtExpr ) override final;
119 virtual void visit( UniqueExpr * uniqueExpr ) override final;
120
121 virtual void visit( VoidType * basicType ) override final;
122 virtual void visit( BasicType * basicType ) override final;
123 virtual void visit( PointerType * pointerType ) override final;
124 virtual void visit( ArrayType * arrayType ) override final;
125 virtual void visit( ReferenceType * referenceType ) override final;
126 virtual void visit( FunctionType * functionType ) override final;
127 virtual void visit( StructInstType * aggregateUseType ) override final;
128 virtual void visit( UnionInstType * aggregateUseType ) override final;
129 virtual void visit( EnumInstType * aggregateUseType ) override final;
130 virtual void visit( TraitInstType * aggregateUseType ) override final;
131 virtual void visit( TypeInstType * aggregateUseType ) override final;
132 virtual void visit( TupleType * tupleType ) override final;
133 virtual void visit( TypeofType * typeofType ) override final;
134 virtual void visit( AttrType * attrType ) override final;
135 virtual void visit( VarArgsType * varArgsType ) override final;
136 virtual void visit( ZeroType * zeroType ) override final;
137 virtual void visit( OneType * oneType ) override final;
138
139 virtual void visit( Designation * designation ) override final;
140 virtual void visit( SingleInit * singleInit ) override final;
141 virtual void visit( ListInit * listInit ) override final;
142 virtual void visit( ConstructorInit * ctorInit ) override final;
143
144 virtual void visit( Subrange * subrange ) override final;
145
146 virtual void visit( Constant * constant ) override final;
147
148 virtual void visit( Attribute * attribute ) override final;
149
150 virtual DeclarationWithType * mutate( ObjectDecl * objectDecl ) override final;
151 virtual DeclarationWithType * mutate( FunctionDecl * functionDecl ) override final;
152 virtual Declaration * mutate( StructDecl * aggregateDecl ) override final;
153 virtual Declaration * mutate( UnionDecl * aggregateDecl ) override final;
154 virtual Declaration * mutate( EnumDecl * aggregateDecl ) override final;
155 virtual Declaration * mutate( TraitDecl * aggregateDecl ) override final;
156 virtual Declaration * mutate( TypeDecl * typeDecl ) override final;
157 virtual Declaration * mutate( TypedefDecl * typeDecl ) override final;
158 virtual AsmDecl * mutate( AsmDecl * asmDecl ) override final;
159
160 virtual CompoundStmt * mutate( CompoundStmt * compoundStmt ) override final;
161 virtual Statement * mutate( ExprStmt * exprStmt ) override final;
162 virtual Statement * mutate( AsmStmt * asmStmt ) override final;
163 virtual Statement * mutate( IfStmt * ifStmt ) override final;
164 virtual Statement * mutate( WhileStmt * whileStmt ) override final;
165 virtual Statement * mutate( ForStmt * forStmt ) override final;
166 virtual Statement * mutate( SwitchStmt * switchStmt ) override final;
167 virtual Statement * mutate( CaseStmt * caseStmt ) override final;
168 virtual Statement * mutate( BranchStmt * branchStmt ) override final;
169 virtual Statement * mutate( ReturnStmt * returnStmt ) override final;
170 virtual Statement * mutate( ThrowStmt * throwStmt ) override final;
171 virtual Statement * mutate( TryStmt * tryStmt ) override final;
172 virtual Statement * mutate( CatchStmt * catchStmt ) override final;
173 virtual Statement * mutate( FinallyStmt * finallyStmt ) override final;
174 virtual Statement * mutate( WaitForStmt * waitforStmt ) override final;
175 virtual Statement * mutate( WithStmt * withStmt ) override final;
176 virtual NullStmt * mutate( NullStmt * nullStmt ) override final;
177 virtual Statement * mutate( DeclStmt * declStmt ) override final;
178 virtual Statement * mutate( ImplicitCtorDtorStmt * impCtorDtorStmt ) override final;
179
180 virtual Expression * mutate( ApplicationExpr * applicationExpr ) override final;
181 virtual Expression * mutate( UntypedExpr * untypedExpr ) override final;
182 virtual Expression * mutate( NameExpr * nameExpr ) override final;
183 virtual Expression * mutate( AddressExpr * castExpr ) override final;
184 virtual Expression * mutate( LabelAddressExpr * labAddressExpr ) override final;
185 virtual Expression * mutate( CastExpr * castExpr ) override final;
186 virtual Expression * mutate( VirtualCastExpr * castExpr ) override final;
187 virtual Expression * mutate( UntypedMemberExpr * memberExpr ) override final;
188 virtual Expression * mutate( MemberExpr * memberExpr ) override final;
189 virtual Expression * mutate( VariableExpr * variableExpr ) override final;
190 virtual Expression * mutate( ConstantExpr * constantExpr ) override final;
191 virtual Expression * mutate( SizeofExpr * sizeofExpr ) override final;
192 virtual Expression * mutate( AlignofExpr * alignofExpr ) override final;
193 virtual Expression * mutate( UntypedOffsetofExpr * offsetofExpr ) override final;
194 virtual Expression * mutate( OffsetofExpr * offsetofExpr ) override final;
195 virtual Expression * mutate( OffsetPackExpr * offsetPackExpr ) override final;
196 virtual Expression * mutate( AttrExpr * attrExpr ) override final;
197 virtual Expression * mutate( LogicalExpr * logicalExpr ) override final;
198 virtual Expression * mutate( ConditionalExpr * conditionalExpr ) override final;
199 virtual Expression * mutate( CommaExpr * commaExpr ) override final;
200 virtual Expression * mutate( TypeExpr * typeExpr ) override final;
201 virtual Expression * mutate( AsmExpr * asmExpr ) override final;
202 virtual Expression * mutate( ImplicitCopyCtorExpr * impCpCtorExpr ) override final;
203 virtual Expression * mutate( ConstructorExpr * ctorExpr ) override final;
204 virtual Expression * mutate( CompoundLiteralExpr * compLitExpr ) override final;
205 virtual Expression * mutate( RangeExpr * rangeExpr ) override final;
206 virtual Expression * mutate( UntypedTupleExpr * tupleExpr ) override final;
207 virtual Expression * mutate( TupleExpr * tupleExpr ) override final;
208 virtual Expression * mutate( TupleIndexExpr * tupleExpr ) override final;
209 virtual Expression * mutate( TupleAssignExpr * assignExpr ) override final;
210 virtual Expression * mutate( StmtExpr * stmtExpr ) override final;
211 virtual Expression * mutate( UniqueExpr * uniqueExpr ) override final;
212
213 virtual Type * mutate( VoidType * basicType ) override final;
214 virtual Type * mutate( BasicType * basicType ) override final;
215 virtual Type * mutate( PointerType * pointerType ) override final;
216 virtual Type * mutate( ArrayType * arrayType ) override final;
217 virtual Type * mutate( ReferenceType * referenceType ) override final;
218 virtual Type * mutate( FunctionType * functionType ) override final;
219 virtual Type * mutate( StructInstType * aggregateUseType ) override final;
220 virtual Type * mutate( UnionInstType * aggregateUseType ) override final;
221 virtual Type * mutate( EnumInstType * aggregateUseType ) override final;
222 virtual Type * mutate( TraitInstType * aggregateUseType ) override final;
223 virtual Type * mutate( TypeInstType * aggregateUseType ) override final;
224 virtual Type * mutate( TupleType * tupleType ) override final;
225 virtual Type * mutate( TypeofType * typeofType ) override final;
226 virtual Type * mutate( AttrType * attrType ) override final;
227 virtual Type * mutate( VarArgsType * varArgsType ) override final;
228 virtual Type * mutate( ZeroType * zeroType ) override final;
229 virtual Type * mutate( OneType * oneType ) override final;
230
231 virtual Designation * mutate( Designation * designation ) override final;
232 virtual Initializer * mutate( SingleInit * singleInit ) override final;
233 virtual Initializer * mutate( ListInit * listInit ) override final;
234 virtual Initializer * mutate( ConstructorInit * ctorInit ) override final;
235
236 virtual Subrange * mutate( Subrange * subrange ) override final;
237
238 virtual Constant * mutate( Constant * constant ) override final;
239
240 virtual Attribute * mutate( Attribute * attribute ) override final;
241
242 virtual TypeSubstitution * mutate( TypeSubstitution * sub ) final;
243
244private:
245 template<typename pass_t> friend void acceptAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor );
246 template<typename pass_t> friend void mutateAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor );
247 template< typename TreeType, typename pass_t > friend void maybeAccept_impl( TreeType * tree, PassVisitor< pass_t > & visitor );
248 template< typename TreeType, typename pass_t > friend void maybeMutate_impl( TreeType *& tree, PassVisitor< pass_t > & mutator );
249 template< typename Container, typename pass_t > friend void maybeAccept_impl( Container & container, PassVisitor< pass_t > & visitor );
250 template< typename Container, typename pass_t > friend void maybeMutate_impl( Container & container, PassVisitor< pass_t > & mutator );
251
252 template<typename node_type> void call_previsit ( node_type * node ) { previsit_impl ( pass, node, 0 ); }
253 template<typename node_type> void call_postvisit( node_type * node ) { postvisit_impl( pass, node, 0 ); }
254
255 template<typename node_type> void call_premutate ( node_type * node ) { premutate_impl( pass, node, 0 ); }
256 template<typename return_type, typename node_type> return_type call_postmutate ( node_type * node ) { return postmutate_impl<return_type>( pass, node, 0 ); }
257
258 void call_beginScope() { begin_scope_impl( pass, 0 ); }
259 void call_endScope () { end_scope_impl ( pass, 0 ); }
260
261 void set_env( TypeSubstitution * env ) { set_env_impl( pass, env, 0); }
262
263 template< typename func_t >
264 void handleStatementList( std::list< Statement * > & statements, func_t func );
265 void visitStatementList ( std::list< Statement* > &statements );
266 void mutateStatementList( std::list< Statement* > &statements );
267
268 template< typename func_t >
269 Statement * handleStatement( Statement * stmt, func_t func );
270 Statement * visitStatement ( Statement * stmt );
271 Statement * mutateStatement( Statement * stmt );
272
273 template< typename func_t >
274 Expression * handleExpression( Expression * expr, func_t func );
275 Expression * visitExpression ( Expression * expr );
276 Expression * mutateExpression( Expression * expr );
277
278
279 TypeSubstitution ** get_env_ptr () { return env_impl ( pass, 0); }
280 std::list< Statement* > * get_beforeStmts() { return stmtsToAddBefore_impl( pass, 0); }
281 std::list< Statement* > * get_afterStmts () { return stmtsToAddAfter_impl ( pass, 0); }
282 std::list< Declaration* > * get_beforeDecls() { return declsToAddBefore_impl( pass, 0); }
283 std::list< Declaration* > * get_afterDecls () { return declsToAddAfter_impl ( pass, 0); }
284
285 bool get_visit_children () { bool_ref * ptr = visit_children_impl(pass, 0); return ptr ? *ptr : true; }
286 bool_ref * get_visit_children_ptr() { return visit_children_impl(pass, 0); }
287
288 void indexerScopeEnter () { indexer_impl_enterScope ( pass, 0 ); }
289 void indexerScopeLeave () { indexer_impl_leaveScope ( pass, 0 ); }
290 void indexerAddId ( DeclarationWithType * node ) { indexer_impl_addId ( pass, 0, node ); }
291 void indexerAddType ( NamedTypeDecl * node ) { indexer_impl_addType ( pass, 0, node ); }
292 void indexerAddStruct ( const std::string & id ) { indexer_impl_addStruct ( pass, 0, id ); }
293 void indexerAddStruct ( StructDecl * node ) { indexer_impl_addStruct ( pass, 0, node ); }
294 void indexerAddStructFwd( StructDecl * node ) { indexer_impl_addStructFwd( pass, 0, node ); }
295 void indexerAddEnum ( EnumDecl * node ) { indexer_impl_addEnum ( pass, 0, node ); }
296 void indexerAddUnion ( const std::string & id ) { indexer_impl_addUnion ( pass, 0, id ); }
297 void indexerAddUnion ( UnionDecl * node ) { indexer_impl_addUnion ( pass, 0, node ); }
298 void indexerAddUnionFwd ( UnionDecl * node ) { indexer_impl_addUnionFwd ( pass, 0, node ); }
299 void indexerAddTrait ( TraitDecl * node ) { indexer_impl_addTrait ( pass, 0, node ); }
300
301 template< typename TreeType, typename VisitorType >
302 friend inline void indexerScopedAccept( TreeType * tree, VisitorType &visitor );
303
304 template< typename TreeType, typename VisitorType >
305 friend inline void indexerScopedMutate( TreeType *& tree, VisitorType &visitor );
306};
307
308template<typename pass_type, typename T>
309void GuardValue( pass_type * pass, T& val ) {
310 pass->at_cleanup( [ val ]( void * newVal ) {
311 * static_cast< T * >( newVal ) = val;
312 }, static_cast< void * >( & val ) );
313}
314
315class WithTypeSubstitution {
316protected:
317 WithTypeSubstitution() = default;
318 ~WithTypeSubstitution() = default;
319
320public:
321 TypeSubstitution * env = nullptr;
322};
323
324class WithStmtsToAdd {
325protected:
326 WithStmtsToAdd() = default;
327 ~WithStmtsToAdd() = default;
328
329public:
330 std::list< Statement* > stmtsToAddBefore;
331 std::list< Statement* > stmtsToAddAfter;
332};
333
334class WithDeclsToAdd {
335protected:
336 WithDeclsToAdd() = default;
337 ~WithDeclsToAdd() {
338 assert( declsToAddBefore.empty() );
339 }
340
341public:
342 std::list< Declaration* > declsToAddBefore;
343 std::list< Declaration* > declsToAddAfter;
344};
345
346class WithShortCircuiting {
347protected:
348 WithShortCircuiting() = default;
349 ~WithShortCircuiting() = default;
350
351public:
352 bool_ref visit_children;
353};
354
355class WithGuards {
356protected:
357 WithGuards() = default;
358 ~WithGuards() = default;
359
360public:
361 at_cleanup_t at_cleanup;
362
363 template< typename T >
364 void GuardValue( T& val ) {
365 at_cleanup( [ val ]( void * newVal ) {
366 * static_cast< T * >( newVal ) = val;
367 }, static_cast< void * >( & val ) );
368 }
369
370 template< typename T >
371 void GuardScope( T& val ) {
372 val.beginScope();
373 at_cleanup( []( void * val ) {
374 static_cast< T * >( val )->endScope();
375 }, static_cast< void * >( & val ) );
376 }
377
378 template< typename Func >
379 void GuardAction( Func func ) {
380 at_cleanup( [func](__attribute__((unused)) void *) { func(); }, nullptr );
381 }
382};
383
384template<typename pass_type>
385class WithVisitorRef {
386protected:
387 WithVisitorRef() {}
388 ~WithVisitorRef() {}
389
390public:
391 PassVisitor<pass_type> * const visitor = nullptr;
392};
393
394class WithIndexer {
395protected:
396 WithIndexer() {}
397 ~WithIndexer() {}
398
399public:
400 SymTab::Indexer indexer;
401};
402
403#include "PassVisitor.impl.h"
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