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// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef V8_TYPING_H_
#define V8_TYPING_H_
#include "v8.h"
#include "allocation.h"
#include "ast.h"
#include "compiler.h"
#include "type-info.h"
#include "types.h"
#include "effects.h"
#include "zone.h"
#include "scopes.h"
namespace v8 {
namespace internal {
class AstTyper: public AstVisitor {
public:
static void Run(CompilationInfo* info);
void* operator new(size_t size, Zone* zone) {
return zone->New(static_cast<int>(size));
}
void operator delete(void* pointer, Zone* zone) { }
void operator delete(void* pointer) { }
DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
private:
explicit AstTyper(CompilationInfo* info);
static const int kNoVar = INT_MIN;
typedef v8::internal::Effects<int, kNoVar> Effects;
typedef v8::internal::NestedEffects<int, kNoVar> Store;
CompilationInfo* info_;
TypeFeedbackOracle oracle_;
Store store_;
TypeFeedbackOracle* oracle() { return &oracle_; }
Zone* zone() const { return info_->zone(); }
void NarrowType(Expression* e, Bounds b) {
e->set_bounds(Bounds::Both(e->bounds(), b, isolate_));
}
void NarrowLowerType(Expression* e, Handle<Type> t) {
e->set_bounds(Bounds::NarrowLower(e->bounds(), t, isolate_));
}
Effects EnterEffects() {
store_ = store_.Push();
return store_.Top();
}
void ExitEffects() { store_ = store_.Pop(); }
int variable_index(Variable* var) {
return var->IsStackLocal() ? var->index() :
var->IsParameter() ? -var->index() : kNoVar;
}
void VisitDeclarations(ZoneList<Declaration*>* declarations);
void VisitStatements(ZoneList<Statement*>* statements);
#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
AST_NODE_LIST(DECLARE_VISIT)
#undef DECLARE_VISIT
DISALLOW_COPY_AND_ASSIGN(AstTyper);
};
} } // namespace v8::internal
#endif // V8_TYPING_H_
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