1 // Copyright 2013 the V8 project authors. All rights reserved.
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3 // modification, are permitted provided that the following conditions are
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33 #include "allocation.h"
36 #include "type-info.h"
46 class AstTyper: public AstVisitor {
48 static void Run(CompilationInfo* info);
50 void* operator new(size_t size, Zone* zone) {
51 return zone->New(static_cast<int>(size));
53 void operator delete(void* pointer, Zone* zone) { }
54 void operator delete(void* pointer) { }
56 DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
59 explicit AstTyper(CompilationInfo* info);
61 static const int kNoVar = INT_MIN;
62 typedef v8::internal::Effects<int, kNoVar> Effects;
63 typedef v8::internal::NestedEffects<int, kNoVar> Store;
65 CompilationInfo* info_;
66 TypeFeedbackOracle oracle_;
69 TypeFeedbackOracle* oracle() { return &oracle_; }
70 Zone* zone() const { return info_->zone(); }
72 void NarrowType(Expression* e, Bounds b) {
73 e->set_bounds(Bounds::Both(e->bounds(), b, isolate_));
75 void NarrowLowerType(Expression* e, Handle<Type> t) {
76 e->set_bounds(Bounds::NarrowLower(e->bounds(), t, isolate_));
79 Effects EnterEffects() {
80 store_ = store_.Push();
83 void ExitEffects() { store_ = store_.Pop(); }
85 int variable_index(Variable* var) {
86 return var->IsStackLocal() ? var->index() :
87 var->IsParameter() ? -var->index() : kNoVar;
90 void VisitDeclarations(ZoneList<Declaration*>* declarations);
91 void VisitStatements(ZoneList<Statement*>* statements);
93 #define DECLARE_VISIT(type) virtual void Visit##type(type* node);
94 AST_NODE_LIST(DECLARE_VISIT)
97 DISALLOW_COPY_AND_ASSIGN(AstTyper);
100 } } // namespace v8::internal
102 #endif // V8_TYPING_H_