// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_
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#define V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_
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#include "src/base/compiler-specific.h"
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#include "src/compiler/node-aux-data.h"
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#include "src/globals.h"
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#include "src/source-position.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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class V8_EXPORT_PRIVATE SourcePositionTable final
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: public NON_EXPORTED_BASE(ZoneObject) {
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public:
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class Scope final {
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public:
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Scope(SourcePositionTable* source_positions, SourcePosition position)
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: source_positions_(source_positions),
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prev_position_(source_positions->current_position_) {
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Init(position);
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}
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Scope(SourcePositionTable* source_positions, Node* node)
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: source_positions_(source_positions),
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prev_position_(source_positions->current_position_) {
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Init(source_positions_->GetSourcePosition(node));
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}
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~Scope() { source_positions_->current_position_ = prev_position_; }
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private:
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void Init(SourcePosition position) {
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if (position.IsKnown()) source_positions_->current_position_ = position;
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}
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SourcePositionTable* const source_positions_;
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SourcePosition const prev_position_;
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DISALLOW_COPY_AND_ASSIGN(Scope);
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};
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explicit SourcePositionTable(Graph* graph);
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void AddDecorator();
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void RemoveDecorator();
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SourcePosition GetSourcePosition(Node* node) const;
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void SetSourcePosition(Node* node, SourcePosition position);
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void SetCurrentPosition(const SourcePosition& pos) {
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current_position_ = pos;
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}
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void PrintJson(std::ostream& os) const;
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private:
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class Decorator;
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Graph* const graph_;
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Decorator* decorator_;
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SourcePosition current_position_;
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NodeAuxData<SourcePosition, SourcePosition::Unknown> table_;
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DISALLOW_COPY_AND_ASSIGN(SourcePositionTable);
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};
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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#endif // V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_
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