source: src/Common/PassVisitor.h@ 9f10c4b8

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 9f10c4b8 was 9236060, checked in by Rob Schluntz <rschlunt@…>, 8 years ago

Merge branch 'master' into references
  • Property mode set to 100644
File size: 16.3 KB
RevLine 
[13932f14]1#pragma once
2
[296b2be]3#include <stack>
4
[ab904dc]5#include "SynTree/Mutator.h"
[13932f14]6#include "SynTree/Visitor.h"
7
[ab904dc]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"
[2a7b3ca]14#include "SynTree/TypeSubstitution.h"
[ab904dc]15
[296b2be]16#include "PassVisitor.proto.h"
[ab904dc]17
[13932f14]18//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
[5d88a0a]19// Templated visitor type
20// To use declare a PassVisitor< YOUR VISITOR TYPE >
[5e298d7]21// The visitor type should specify the previsit/postvisit/premutate/postmutate for types that are desired.
[4551a6e]22// Note: previsit/postvisit/premutate/postmutate must be **public** members
[5e298d7]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.
[6ca154b]28// | WithShortCircuiting - provides the ability to skip visiting child nodes; set visit_children to false in pre{visit,mutate} to skip visiting children
[d24d4e1]29// | WithGuards - provides the ability to save/restore data like a LIFO stack; to save, call GuardValue with the variable to save, the variable
[5e298d7]30// will automatically be restored to its previous value after the corresponding postvisit/postmutate teminates.
[13932f14]31//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
32template< typename pass_type >
[ab904dc]33class PassVisitor final : public Visitor, public Mutator {
[13932f14]34public:
35
36 template< typename... Args >
[aff3af4]37 PassVisitor(Args &&... args)
[13932f14]38 : pass( std::forward<Args>( args )... )
[b73bd70]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 }
[13932f14]46
47 virtual ~PassVisitor() = default;
48
[aff3af4]49 pass_type pass;
[13932f14]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;
[6e09f211]71 virtual void visit( ThrowStmt *throwStmt ) override final;
[13932f14]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;
[a5f0529]83 virtual void visit( VirtualCastExpr *castExpr ) override final;
[13932f14]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;
[6b9b047]116 virtual void visit( ReferenceType *referenceType ) override final;
[13932f14]117 virtual void visit( FunctionType *functionType ) override final;
118 virtual void visit( StructInstType *aggregateUseType ) override final;
119 virtual void visit( UnionInstType *aggregateUseType ) override final;
120 virtual void visit( EnumInstType *aggregateUseType ) override final;
121 virtual void visit( TraitInstType *aggregateUseType ) override final;
122 virtual void visit( TypeInstType *aggregateUseType ) override final;
123 virtual void visit( TupleType *tupleType ) override final;
124 virtual void visit( TypeofType *typeofType ) override final;
125 virtual void visit( AttrType *attrType ) override final;
126 virtual void visit( VarArgsType *varArgsType ) override final;
127 virtual void visit( ZeroType *zeroType ) override final;
128 virtual void visit( OneType *oneType ) override final;
129
130 virtual void visit( SingleInit *singleInit ) override final;
131 virtual void visit( ListInit *listInit ) override final;
132 virtual void visit( ConstructorInit *ctorInit ) override final;
133
134 virtual void visit( Subrange *subrange ) override final;
135
136 virtual void visit( Constant *constant ) override final;
137
[ab904dc]138 virtual DeclarationWithType* mutate( ObjectDecl *objectDecl ) override final;
139 virtual DeclarationWithType* mutate( FunctionDecl *functionDecl ) override final;
140 virtual Declaration* mutate( StructDecl *aggregateDecl ) override final;
141 virtual Declaration* mutate( UnionDecl *aggregateDecl ) override final;
142 virtual Declaration* mutate( EnumDecl *aggregateDecl ) override final;
143 virtual Declaration* mutate( TraitDecl *aggregateDecl ) override final;
144 virtual TypeDecl* mutate( TypeDecl *typeDecl ) override final;
145 virtual Declaration* mutate( TypedefDecl *typeDecl ) override final;
146 virtual AsmDecl* mutate( AsmDecl *asmDecl ) override final;
147
148 virtual CompoundStmt* mutate( CompoundStmt *compoundStmt ) override final;
149 virtual Statement* mutate( ExprStmt *exprStmt ) override final;
150 virtual Statement* mutate( AsmStmt *asmStmt ) override final;
151 virtual Statement* mutate( IfStmt *ifStmt ) override final;
152 virtual Statement* mutate( WhileStmt *whileStmt ) override final;
153 virtual Statement* mutate( ForStmt *forStmt ) override final;
154 virtual Statement* mutate( SwitchStmt *switchStmt ) override final;
155 virtual Statement* mutate( CaseStmt *caseStmt ) override final;
156 virtual Statement* mutate( BranchStmt *branchStmt ) override final;
157 virtual Statement* mutate( ReturnStmt *returnStmt ) override final;
[6e09f211]158 virtual Statement* mutate( ThrowStmt *throwStmt ) override final;
[ab904dc]159 virtual Statement* mutate( TryStmt *returnStmt ) override final;
160 virtual Statement* mutate( CatchStmt *catchStmt ) override final;
161 virtual Statement* mutate( FinallyStmt *catchStmt ) override final;
162 virtual NullStmt* mutate( NullStmt *nullStmt ) override final;
163 virtual Statement* mutate( DeclStmt *declStmt ) override final;
164 virtual Statement* mutate( ImplicitCtorDtorStmt *impCtorDtorStmt ) override final;
165
166 virtual Expression* mutate( ApplicationExpr *applicationExpr ) override final;
167 virtual Expression* mutate( UntypedExpr *untypedExpr ) override final;
168 virtual Expression* mutate( NameExpr *nameExpr ) override final;
169 virtual Expression* mutate( AddressExpr *castExpr ) override final;
170 virtual Expression* mutate( LabelAddressExpr *labAddressExpr ) override final;
171 virtual Expression* mutate( CastExpr *castExpr ) override final;
[a5f0529]172 virtual Expression* mutate( VirtualCastExpr *castExpr ) override final;
[ab904dc]173 virtual Expression* mutate( UntypedMemberExpr *memberExpr ) override final;
174 virtual Expression* mutate( MemberExpr *memberExpr ) override final;
175 virtual Expression* mutate( VariableExpr *variableExpr ) override final;
176 virtual Expression* mutate( ConstantExpr *constantExpr ) override final;
177 virtual Expression* mutate( SizeofExpr *sizeofExpr ) override final;
178 virtual Expression* mutate( AlignofExpr *alignofExpr ) override final;
179 virtual Expression* mutate( UntypedOffsetofExpr *offsetofExpr ) override final;
180 virtual Expression* mutate( OffsetofExpr *offsetofExpr ) override final;
181 virtual Expression* mutate( OffsetPackExpr *offsetPackExpr ) override final;
182 virtual Expression* mutate( AttrExpr *attrExpr ) override final;
183 virtual Expression* mutate( LogicalExpr *logicalExpr ) override final;
184 virtual Expression* mutate( ConditionalExpr *conditionalExpr ) override final;
185 virtual Expression* mutate( CommaExpr *commaExpr ) override final;
186 virtual Expression* mutate( TypeExpr *typeExpr ) override final;
187 virtual Expression* mutate( AsmExpr *asmExpr ) override final;
188 virtual Expression* mutate( ImplicitCopyCtorExpr *impCpCtorExpr ) override final;
189 virtual Expression* mutate( ConstructorExpr *ctorExpr ) override final;
190 virtual Expression* mutate( CompoundLiteralExpr *compLitExpr ) override final;
191 virtual Expression* mutate( RangeExpr *rangeExpr ) override final;
192 virtual Expression* mutate( UntypedTupleExpr *tupleExpr ) override final;
193 virtual Expression* mutate( TupleExpr *tupleExpr ) override final;
194 virtual Expression* mutate( TupleIndexExpr *tupleExpr ) override final;
195 virtual Expression* mutate( TupleAssignExpr *assignExpr ) override final;
196 virtual Expression* mutate( StmtExpr * stmtExpr ) override final;
197 virtual Expression* mutate( UniqueExpr * uniqueExpr ) override final;
198
199 virtual Type* mutate( VoidType *basicType ) override final;
200 virtual Type* mutate( BasicType *basicType ) override final;
201 virtual Type* mutate( PointerType *pointerType ) override final;
202 virtual Type* mutate( ArrayType *arrayType ) override final;
[6b9b047]203 virtual Type* mutate( ReferenceType *referenceType ) override final;
[ab904dc]204 virtual Type* mutate( FunctionType *functionType ) override final;
205 virtual Type* mutate( StructInstType *aggregateUseType ) override final;
206 virtual Type* mutate( UnionInstType *aggregateUseType ) override final;
207 virtual Type* mutate( EnumInstType *aggregateUseType ) override final;
208 virtual Type* mutate( TraitInstType *aggregateUseType ) override final;
209 virtual Type* mutate( TypeInstType *aggregateUseType ) override final;
210 virtual Type* mutate( TupleType *tupleType ) override final;
211 virtual Type* mutate( TypeofType *typeofType ) override final;
212 virtual Type* mutate( AttrType *attrType ) override final;
213 virtual Type* mutate( VarArgsType *varArgsType ) override final;
214 virtual Type* mutate( ZeroType *zeroType ) override final;
215 virtual Type* mutate( OneType *oneType ) override final;
216
217 virtual Initializer* mutate( SingleInit *singleInit ) override final;
218 virtual Initializer* mutate( ListInit *listInit ) override final;
219 virtual Initializer* mutate( ConstructorInit *ctorInit ) override final;
220
221 virtual Subrange *mutate( Subrange *subrange ) override final;
222
223 virtual Constant *mutate( Constant *constant ) override final;
224
[13932f14]225private:
[6ca154b]226 template<typename pass_t> friend void acceptAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor );
227 template<typename pass_t> friend void mutateAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor );
228
[296b2be]229 template<typename node_type> void call_previsit ( node_type * node ) { previsit_impl ( pass, node, 0 ); }
230 template<typename node_type> void call_postvisit( node_type * node ) { postvisit_impl( pass, node, 0 ); }
[13932f14]231
[296b2be]232 template<typename node_type> void call_premutate ( node_type * node ) { premutate_impl( pass, node, 0 ); }
233 template<typename return_type, typename node_type> return_type call_postmutate ( node_type * node ) { return postmutate_impl<return_type>( pass, node, 0 ); }
[ab904dc]234
[296b2be]235 void call_beginScope() { begin_scope_impl( pass, 0 ); }
236 void call_endScope () { end_scope_impl ( pass, 0 ); }
237
[3fb9a83]238 void set_env( TypeSubstitution * env ) { set_env_impl( pass, env, 0); }
239
[6ca154b]240 template< typename func_t >
241 void handleStatementList( std::list< Statement * > & statements, func_t func );
242 void visitStatementList ( std::list< Statement* > &statements );
[296b2be]243 void mutateStatementList( std::list< Statement* > &statements );
[134322e]244
[6ca154b]245 template< typename func_t >
246 Statement * handleStatement( Statement * stmt, func_t func );
247 Statement * visitStatement ( Statement * stmt );
[296b2be]248 Statement * mutateStatement( Statement * stmt );
[134322e]249
[6ca154b]250 template< typename func_t >
251 Expression * handleExpression( Expression * expr, func_t func );
252 Expression * visitExpression ( Expression * expr );
[296b2be]253 Expression * mutateExpression( Expression * expr );
254
[ab904dc]255
[134322e]256 TypeSubstitution ** get_env_ptr () { return env_impl ( pass, 0); }
257 std::list< Statement* > * get_beforeStmts() { return stmtsToAddBefore_impl( pass, 0); }
258 std::list< Statement* > * get_afterStmts () { return stmtsToAddAfter_impl ( pass, 0); }
[35df560]259 std::list< Declaration* > * get_beforeDecls() { return declsToAddBefore_impl( pass, 0); }
260 std::list< Declaration* > * get_afterDecls () { return declsToAddAfter_impl ( pass, 0); }
[b73bd70]261
262 void set_visit_children( bool& ref ) { bool_ref * ptr = visit_children_impl(pass, 0); if(ptr) ptr->set( ref ); }
[13932f14]263};
264
[6e09f211]265template<typename pass_type, typename T>
266void GuardValue( pass_type * pass, T& val ) {
267 pass->at_cleanup( [ val ]( void * newVal ) {
268 * static_cast< T * >( newVal ) = val;
269 }, static_cast< void * >( & val ) );
270}
271
[637568b]272class WithTypeSubstitution {
273protected:
274 WithTypeSubstitution() = default;
275 ~WithTypeSubstitution() = default;
276
[4eb31f2b]277public:
[d24d4e1]278 TypeSubstitution * env = nullptr;
[637568b]279};
280
281class WithStmtsToAdd {
282protected:
283 WithStmtsToAdd() = default;
284 ~WithStmtsToAdd() = default;
285
[4eb31f2b]286public:
[637568b]287 std::list< Statement* > stmtsToAddBefore;
288 std::list< Statement* > stmtsToAddAfter;
289};
[d24d4e1]290
291class WithDeclsToAdd {
292protected:
293 WithDeclsToAdd() = default;
294 ~WithDeclsToAdd() = default;
295
296public:
297 std::list< Declaration* > declsToAddBefore;
298 std::list< Declaration* > declsToAddAfter;
299};
300
[637568b]301class WithShortCircuiting {
302protected:
303 WithShortCircuiting() = default;
304 ~WithShortCircuiting() = default;
305
[4eb31f2b]306public:
[b73bd70]307 bool_ref visit_children;
[637568b]308};
309
[d24d4e1]310class WithGuards {
[637568b]311protected:
[d24d4e1]312 WithGuards() = default;
313 ~WithGuards() = default;
[637568b]314
[4eb31f2b]315public:
[637568b]316 at_cleanup_t at_cleanup;
317
[4eb31f2b]318 template< typename T >
[637568b]319 void GuardValue( T& val ) {
320 at_cleanup( [ val ]( void * newVal ) {
321 * static_cast< T * >( newVal ) = val;
322 }, static_cast< void * >( & val ) );
323 }
[5dd0704]324
[d24d4e1]325 template< typename T >
326 void GuardScope( T& val ) {
327 val.beginScope();
328 at_cleanup( []( void * val ) {
329 static_cast< T * >( val )->endScope();
330 }, static_cast< void * >( & val ) );
331 }
332
[5dd0704]333 template< typename Func >
[d24d4e1]334 void GuardAction( Func func ) {
335 at_cleanup( [func](__attribute__((unused)) void *) { func(); }, nullptr );
[5dd0704]336 }
[637568b]337};
338
[b73bd70]339template<typename pass_type>
340class WithVisitorRef {
341protected:
[d24d4e1]342 WithVisitorRef() {}
343 ~WithVisitorRef() {}
[b73bd70]344
345public:
[d24d4e1]346 PassVisitor<pass_type> * const visitor = nullptr;
[b73bd70]347};
[637568b]348
[aff3af4]349#include "PassVisitor.impl.h"
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