| // 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. |
| |
| #ifndef V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_ |
| #define V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_ |
| |
| #include "src/base/compiler-specific.h" |
| #include "src/compiler/node-aux-data.h" |
| #include "src/globals.h" |
| #include "src/source-position.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| class V8_EXPORT_PRIVATE SourcePositionTable final |
| : public NON_EXPORTED_BASE(ZoneObject) { |
| public: |
| class Scope final { |
| public: |
| Scope(SourcePositionTable* source_positions, SourcePosition position) |
| : source_positions_(source_positions), |
| prev_position_(source_positions->current_position_) { |
| Init(position); |
| } |
| Scope(SourcePositionTable* source_positions, Node* node) |
| : source_positions_(source_positions), |
| prev_position_(source_positions->current_position_) { |
| Init(source_positions_->GetSourcePosition(node)); |
| } |
| ~Scope() { source_positions_->current_position_ = prev_position_; } |
| |
| private: |
| void Init(SourcePosition position) { |
| if (position.IsKnown()) source_positions_->current_position_ = position; |
| } |
| |
| SourcePositionTable* const source_positions_; |
| SourcePosition const prev_position_; |
| DISALLOW_COPY_AND_ASSIGN(Scope); |
| }; |
| |
| explicit SourcePositionTable(Graph* graph); |
| |
| void AddDecorator(); |
| void RemoveDecorator(); |
| |
| SourcePosition GetSourcePosition(Node* node) const; |
| void SetSourcePosition(Node* node, SourcePosition position); |
| |
| void SetCurrentPosition(const SourcePosition& pos) { |
| current_position_ = pos; |
| } |
| |
| void Print(std::ostream& os) const; |
| |
| private: |
| class Decorator; |
| |
| Graph* const graph_; |
| Decorator* decorator_; |
| SourcePosition current_position_; |
| NodeAuxData<SourcePosition, SourcePosition::Unknown> table_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SourcePositionTable); |
| }; |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_ |