source: src/Common/PassVisitor.h@ 948b0c8

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 948b0c8 was a5f0529, checked in by Andrew Beach <ajbeach@…>, 8 years ago

Virtual casts have been added. They still require a lot of hand coded support to work but for simple cases it should be enough.
  • Property mode set to 100644
File size: 16.2 KB
Line 
1#pragma once
2
3#include <stack>
4
5#include "SynTree/Mutator.h"
6#include "SynTree/Visitor.h"
7
8#include "SynTree/Initializer.h"
9#include "SynTree/Statement.h"
10#include "SynTree/Type.h"
11#include "SynTree/Declaration.h"
12#include "SynTree/Expression.h"
13#include "SynTree/Constant.h"
14#include "SynTree/TypeSubstitution.h"
15
16#include "PassVisitor.proto.h"
17
18//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
19// Templated visitor type
20// To use declare a PassVisitor< YOUR VISITOR TYPE >
21// The visitor type should specify the previsit/postvisit/premutate/postmutate for types that are desired.
22// Note: previsit/postvisit/premutate/postmutate must be **public** members
23//
24// Several additional features are available through inheritance
25// | WithTypeSubstitution - provides polymorphic TypeSubstitution * env for the current expression
26// | WithStmtsToAdd - provides the ability to insert statements before or after the current statement by adding new statements into
27// stmtsToAddBefore or stmtsToAddAfter respectively.
28// | WithShortCircuiting - provides the ability to skip visiting child nodes; set visit_children to false in pre{visit,mutate} to skip visiting children
29// | WithGuards - provides the ability to save/restore data like a LIFO stack; to save, call GuardValue with the variable to save, the variable
30// will automatically be restored to its previous value after the corresponding postvisit/postmutate teminates.
31//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
32template< typename pass_type >
33class PassVisitor final : public Visitor, public Mutator {
34public:
35
36 template< typename... Args >
37 PassVisitor(Args &&... args)
38 : pass( std::forward<Args>( args )... )
39 {
40 typedef PassVisitor<pass_type> this_t;
41 this_t * const * visitor = visitor_impl(pass, 0);
42 if(visitor) {
43 *const_cast<this_t **>( visitor ) = this;
44 }
45 }
46
47 virtual ~PassVisitor() = default;
48
49 pass_type pass;
50
51 virtual void visit( ObjectDecl *objectDecl ) override final;
52 virtual void visit( FunctionDecl *functionDecl ) override final;
53 virtual void visit( StructDecl *aggregateDecl ) override final;
54 virtual void visit( UnionDecl *aggregateDecl ) override final;
55 virtual void visit( EnumDecl *aggregateDecl ) override final;
56 virtual void visit( TraitDecl *aggregateDecl ) override final;
57 virtual void visit( TypeDecl *typeDecl ) override final;
58 virtual void visit( TypedefDecl *typeDecl ) override final;
59 virtual void visit( AsmDecl *asmDecl ) override final;
60
61 virtual void visit( CompoundStmt *compoundStmt ) override final;
62 virtual void visit( ExprStmt *exprStmt ) override final;
63 virtual void visit( AsmStmt *asmStmt ) override final;
64 virtual void visit( IfStmt *ifStmt ) override final;
65 virtual void visit( WhileStmt *whileStmt ) override final;
66 virtual void visit( ForStmt *forStmt ) override final;
67 virtual void visit( SwitchStmt *switchStmt ) override final;
68 virtual void visit( CaseStmt *caseStmt ) override final;
69 virtual void visit( BranchStmt *branchStmt ) override final;
70 virtual void visit( ReturnStmt *returnStmt ) override final;
71 virtual void visit( ThrowStmt *throwStmt ) override final;
72 virtual void visit( TryStmt *tryStmt ) override final;
73 virtual void visit( CatchStmt *catchStmt ) override final;
74 virtual void visit( FinallyStmt *finallyStmt ) override final;
75 virtual void visit( NullStmt *nullStmt ) override final;
76 virtual void visit( DeclStmt *declStmt ) override final;
77 virtual void visit( ImplicitCtorDtorStmt *impCtorDtorStmt ) override final;
78
79 virtual void visit( ApplicationExpr *applicationExpr ) override final;
80 virtual void visit( UntypedExpr *untypedExpr ) override final;
81 virtual void visit( NameExpr *nameExpr ) override final;
82 virtual void visit( CastExpr *castExpr ) override final;
83 virtual void visit( VirtualCastExpr *castExpr ) override final;
84 virtual void visit( AddressExpr *addressExpr ) override final;
85 virtual void visit( LabelAddressExpr *labAddressExpr ) override final;
86 virtual void visit( UntypedMemberExpr *memberExpr ) override final;
87 virtual void visit( MemberExpr *memberExpr ) override final;
88 virtual void visit( VariableExpr *variableExpr ) override final;
89 virtual void visit( ConstantExpr *constantExpr ) override final;
90 virtual void visit( SizeofExpr *sizeofExpr ) override final;
91 virtual void visit( AlignofExpr *alignofExpr ) override final;
92 virtual void visit( UntypedOffsetofExpr *offsetofExpr ) override final;
93 virtual void visit( OffsetofExpr *offsetofExpr ) override final;
94 virtual void visit( OffsetPackExpr *offsetPackExpr ) override final;
95 virtual void visit( AttrExpr *attrExpr ) override final;
96 virtual void visit( LogicalExpr *logicalExpr ) override final;
97 virtual void visit( ConditionalExpr *conditionalExpr ) override final;
98 virtual void visit( CommaExpr *commaExpr ) override final;
99 virtual void visit( TypeExpr *typeExpr ) override final;
100 virtual void visit( AsmExpr *asmExpr ) override final;
101 virtual void visit( ImplicitCopyCtorExpr *impCpCtorExpr ) override final;
102 virtual void visit( ConstructorExpr * ctorExpr ) override final;
103 virtual void visit( CompoundLiteralExpr *compLitExpr ) override final;
104 virtual void visit( RangeExpr *rangeExpr ) override final;
105 virtual void visit( UntypedTupleExpr *tupleExpr ) override final;
106 virtual void visit( TupleExpr *tupleExpr ) override final;
107 virtual void visit( TupleIndexExpr *tupleExpr ) override final;
108 virtual void visit( TupleAssignExpr *assignExpr ) override final;
109 virtual void visit( StmtExpr * stmtExpr ) override final;
110 virtual void visit( UniqueExpr * uniqueExpr ) override final;
111
112 virtual void visit( VoidType *basicType ) override final;
113 virtual void visit( BasicType *basicType ) override final;
114 virtual void visit( PointerType *pointerType ) override final;
115 virtual void visit( ArrayType *arrayType ) override final;
116 virtual void visit( FunctionType *functionType ) override final;
117 virtual void visit( StructInstType *aggregateUseType ) override final;
118 virtual void visit( UnionInstType *aggregateUseType ) override final;
119 virtual void visit( EnumInstType *aggregateUseType ) override final;
120 virtual void visit( TraitInstType *aggregateUseType ) override final;
121 virtual void visit( TypeInstType *aggregateUseType ) override final;
122 virtual void visit( TupleType *tupleType ) override final;
123 virtual void visit( TypeofType *typeofType ) override final;
124 virtual void visit( AttrType *attrType ) override final;
125 virtual void visit( VarArgsType *varArgsType ) override final;
126 virtual void visit( ZeroType *zeroType ) override final;
127 virtual void visit( OneType *oneType ) override final;
128
129 virtual void visit( SingleInit *singleInit ) override final;
130 virtual void visit( ListInit *listInit ) override final;
131 virtual void visit( ConstructorInit *ctorInit ) override final;
132
133 virtual void visit( Subrange *subrange ) override final;
134
135 virtual void visit( Constant *constant ) override final;
136
137 virtual DeclarationWithType* mutate( ObjectDecl *objectDecl ) override final;
138 virtual DeclarationWithType* mutate( FunctionDecl *functionDecl ) override final;
139 virtual Declaration* mutate( StructDecl *aggregateDecl ) override final;
140 virtual Declaration* mutate( UnionDecl *aggregateDecl ) override final;
141 virtual Declaration* mutate( EnumDecl *aggregateDecl ) override final;
142 virtual Declaration* mutate( TraitDecl *aggregateDecl ) override final;
143 virtual TypeDecl* mutate( TypeDecl *typeDecl ) override final;
144 virtual Declaration* mutate( TypedefDecl *typeDecl ) override final;
145 virtual AsmDecl* mutate( AsmDecl *asmDecl ) override final;
146
147 virtual CompoundStmt* mutate( CompoundStmt *compoundStmt ) override final;
148 virtual Statement* mutate( ExprStmt *exprStmt ) override final;
149 virtual Statement* mutate( AsmStmt *asmStmt ) override final;
150 virtual Statement* mutate( IfStmt *ifStmt ) override final;
151 virtual Statement* mutate( WhileStmt *whileStmt ) override final;
152 virtual Statement* mutate( ForStmt *forStmt ) override final;
153 virtual Statement* mutate( SwitchStmt *switchStmt ) override final;
154 virtual Statement* mutate( CaseStmt *caseStmt ) override final;
155 virtual Statement* mutate( BranchStmt *branchStmt ) override final;
156 virtual Statement* mutate( ReturnStmt *returnStmt ) override final;
157 virtual Statement* mutate( ThrowStmt *throwStmt ) override final;
158 virtual Statement* mutate( TryStmt *returnStmt ) override final;
159 virtual Statement* mutate( CatchStmt *catchStmt ) override final;
160 virtual Statement* mutate( FinallyStmt *catchStmt ) override final;
161 virtual NullStmt* mutate( NullStmt *nullStmt ) override final;
162 virtual Statement* mutate( DeclStmt *declStmt ) override final;
163 virtual Statement* mutate( ImplicitCtorDtorStmt *impCtorDtorStmt ) override final;
164
165 virtual Expression* mutate( ApplicationExpr *applicationExpr ) override final;
166 virtual Expression* mutate( UntypedExpr *untypedExpr ) override final;
167 virtual Expression* mutate( NameExpr *nameExpr ) override final;
168 virtual Expression* mutate( AddressExpr *castExpr ) override final;
169 virtual Expression* mutate( LabelAddressExpr *labAddressExpr ) override final;
170 virtual Expression* mutate( CastExpr *castExpr ) override final;
171 virtual Expression* mutate( VirtualCastExpr *castExpr ) override final;
172 virtual Expression* mutate( UntypedMemberExpr *memberExpr ) override final;
173 virtual Expression* mutate( MemberExpr *memberExpr ) override final;
174 virtual Expression* mutate( VariableExpr *variableExpr ) override final;
175 virtual Expression* mutate( ConstantExpr *constantExpr ) override final;
176 virtual Expression* mutate( SizeofExpr *sizeofExpr ) override final;
177 virtual Expression* mutate( AlignofExpr *alignofExpr ) override final;
178 virtual Expression* mutate( UntypedOffsetofExpr *offsetofExpr ) override final;
179 virtual Expression* mutate( OffsetofExpr *offsetofExpr ) override final;
180 virtual Expression* mutate( OffsetPackExpr *offsetPackExpr ) override final;
181 virtual Expression* mutate( AttrExpr *attrExpr ) override final;
182 virtual Expression* mutate( LogicalExpr *logicalExpr ) override final;
183 virtual Expression* mutate( ConditionalExpr *conditionalExpr ) override final;
184 virtual Expression* mutate( CommaExpr *commaExpr ) override final;
185 virtual Expression* mutate( TypeExpr *typeExpr ) override final;
186 virtual Expression* mutate( AsmExpr *asmExpr ) override final;
187 virtual Expression* mutate( ImplicitCopyCtorExpr *impCpCtorExpr ) override final;
188 virtual Expression* mutate( ConstructorExpr *ctorExpr ) override final;
189 virtual Expression* mutate( CompoundLiteralExpr *compLitExpr ) override final;
190 virtual Expression* mutate( RangeExpr *rangeExpr ) override final;
191 virtual Expression* mutate( UntypedTupleExpr *tupleExpr ) override final;
192 virtual Expression* mutate( TupleExpr *tupleExpr ) override final;
193 virtual Expression* mutate( TupleIndexExpr *tupleExpr ) override final;
194 virtual Expression* mutate( TupleAssignExpr *assignExpr ) override final;
195 virtual Expression* mutate( StmtExpr * stmtExpr ) override final;
196 virtual Expression* mutate( UniqueExpr * uniqueExpr ) override final;
197
198 virtual Type* mutate( VoidType *basicType ) override final;
199 virtual Type* mutate( BasicType *basicType ) override final;
200 virtual Type* mutate( PointerType *pointerType ) override final;
201 virtual Type* mutate( ArrayType *arrayType ) override final;
202 virtual Type* mutate( FunctionType *functionType ) override final;
203 virtual Type* mutate( StructInstType *aggregateUseType ) override final;
204 virtual Type* mutate( UnionInstType *aggregateUseType ) override final;
205 virtual Type* mutate( EnumInstType *aggregateUseType ) override final;
206 virtual Type* mutate( TraitInstType *aggregateUseType ) override final;
207 virtual Type* mutate( TypeInstType *aggregateUseType ) override final;
208 virtual Type* mutate( TupleType *tupleType ) override final;
209 virtual Type* mutate( TypeofType *typeofType ) override final;
210 virtual Type* mutate( AttrType *attrType ) override final;
211 virtual Type* mutate( VarArgsType *varArgsType ) override final;
212 virtual Type* mutate( ZeroType *zeroType ) override final;
213 virtual Type* mutate( OneType *oneType ) override final;
214
215 virtual Initializer* mutate( SingleInit *singleInit ) override final;
216 virtual Initializer* mutate( ListInit *listInit ) override final;
217 virtual Initializer* mutate( ConstructorInit *ctorInit ) override final;
218
219 virtual Subrange *mutate( Subrange *subrange ) override final;
220
221 virtual Constant *mutate( Constant *constant ) override final;
222
223private:
224 template<typename pass_t> friend void acceptAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor );
225 template<typename pass_t> friend void mutateAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor );
226
227 template<typename node_type> void call_previsit ( node_type * node ) { previsit_impl ( pass, node, 0 ); }
228 template<typename node_type> void call_postvisit( node_type * node ) { postvisit_impl( pass, node, 0 ); }
229
230 template<typename node_type> void call_premutate ( node_type * node ) { premutate_impl( pass, node, 0 ); }
231 template<typename return_type, typename node_type> return_type call_postmutate ( node_type * node ) { return postmutate_impl<return_type>( pass, node, 0 ); }
232
233 void call_beginScope() { begin_scope_impl( pass, 0 ); }
234 void call_endScope () { end_scope_impl ( pass, 0 ); }
235
236 void set_env( TypeSubstitution * env ) { set_env_impl( pass, env, 0); }
237
238 template< typename func_t >
239 void handleStatementList( std::list< Statement * > & statements, func_t func );
240 void visitStatementList ( std::list< Statement* > &statements );
241 void mutateStatementList( std::list< Statement* > &statements );
242
243 template< typename func_t >
244 Statement * handleStatement( Statement * stmt, func_t func );
245 Statement * visitStatement ( Statement * stmt );
246 Statement * mutateStatement( Statement * stmt );
247
248 template< typename func_t >
249 Expression * handleExpression( Expression * expr, func_t func );
250 Expression * visitExpression ( Expression * expr );
251 Expression * mutateExpression( Expression * expr );
252
253
254 TypeSubstitution ** get_env_ptr () { return env_impl ( pass, 0); }
255 std::list< Statement* > * get_beforeStmts() { return stmtsToAddBefore_impl( pass, 0); }
256 std::list< Statement* > * get_afterStmts () { return stmtsToAddAfter_impl ( pass, 0); }
257 std::list< Declaration* > * get_beforeDecls() { return declsToAddBefore_impl( pass, 0); }
258 std::list< Declaration* > * get_afterDecls () { return declsToAddAfter_impl ( pass, 0); }
259
260 void set_visit_children( bool& ref ) { bool_ref * ptr = visit_children_impl(pass, 0); if(ptr) ptr->set( ref ); }
261};
262
263template<typename pass_type, typename T>
264void GuardValue( pass_type * pass, T& val ) {
265 pass->at_cleanup( [ val ]( void * newVal ) {
266 * static_cast< T * >( newVal ) = val;
267 }, static_cast< void * >( & val ) );
268}
269
270class WithTypeSubstitution {
271protected:
272 WithTypeSubstitution() = default;
273 ~WithTypeSubstitution() = default;
274
275public:
276 TypeSubstitution * env = nullptr;
277};
278
279class WithStmtsToAdd {
280protected:
281 WithStmtsToAdd() = default;
282 ~WithStmtsToAdd() = default;
283
284public:
285 std::list< Statement* > stmtsToAddBefore;
286 std::list< Statement* > stmtsToAddAfter;
287};
288
289class WithDeclsToAdd {
290protected:
291 WithDeclsToAdd() = default;
292 ~WithDeclsToAdd() = default;
293
294public:
295 std::list< Declaration* > declsToAddBefore;
296 std::list< Declaration* > declsToAddAfter;
297};
298
299class WithShortCircuiting {
300protected:
301 WithShortCircuiting() = default;
302 ~WithShortCircuiting() = default;
303
304public:
305 bool_ref visit_children;
306};
307
308class WithGuards {
309protected:
310 WithGuards() = default;
311 ~WithGuards() = default;
312
313public:
314 at_cleanup_t at_cleanup;
315
316 template< typename T >
317 void GuardValue( T& val ) {
318 at_cleanup( [ val ]( void * newVal ) {
319 * static_cast< T * >( newVal ) = val;
320 }, static_cast< void * >( & val ) );
321 }
322
323 template< typename T >
324 void GuardScope( T& val ) {
325 val.beginScope();
326 at_cleanup( []( void * val ) {
327 static_cast< T * >( val )->endScope();
328 }, static_cast< void * >( & val ) );
329 }
330
331 template< typename Func >
332 void GuardAction( Func func ) {
333 at_cleanup( [func](__attribute__((unused)) void *) { func(); }, nullptr );
334 }
335};
336
337template<typename pass_type>
338class WithVisitorRef {
339protected:
340 WithVisitorRef() {}
341 ~WithVisitorRef() {}
342
343public:
344 PassVisitor<pass_type> * const visitor = nullptr;
345};
346
347#include "PassVisitor.impl.h"
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