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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/compiler/source-position.h"
#include "src/compiler/graph.h"
#include "src/compiler/node-aux-data-inl.h"
namespace v8 {
namespace internal {
namespace compiler {
class SourcePositionTable::Decorator : public GraphDecorator {
public:
explicit Decorator(SourcePositionTable* source_positions)
: source_positions_(source_positions) {}
virtual void Decorate(Node* node) {
DCHECK(!source_positions_->current_position_.IsInvalid());
source_positions_->table_.Set(node, source_positions_->current_position_);
}
private:
SourcePositionTable* source_positions_;
};
SourcePositionTable::SourcePositionTable(Graph* graph)
: graph_(graph),
decorator_(NULL),
current_position_(SourcePosition::Invalid()),
table_(graph->zone()) {}
void SourcePositionTable::AddDecorator() {
DCHECK(decorator_ == NULL);
decorator_ = new (graph_->zone()) Decorator(this);
graph_->AddDecorator(decorator_);
}
void SourcePositionTable::RemoveDecorator() {
DCHECK(decorator_ != NULL);
graph_->RemoveDecorator(decorator_);
decorator_ = NULL;
}
SourcePosition SourcePositionTable::GetSourcePosition(Node* node) const {
return table_.Get(node);
}
} // namespace compiler
} // namespace internal
} // namespace v8
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