Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/compiler/source-position.h" |
| 6 | #include "src/compiler/graph.h" |
| 7 | #include "src/compiler/node-aux-data-inl.h" |
| 8 | |
| 9 | namespace v8 { |
| 10 | namespace internal { |
| 11 | namespace compiler { |
| 12 | |
| 13 | class SourcePositionTable::Decorator : public GraphDecorator { |
| 14 | public: |
| 15 | explicit Decorator(SourcePositionTable* source_positions) |
| 16 | : source_positions_(source_positions) {} |
| 17 | |
| 18 | virtual void Decorate(Node* node) { |
| 19 | DCHECK(!source_positions_->current_position_.IsInvalid()); |
| 20 | source_positions_->table_.Set(node, source_positions_->current_position_); |
| 21 | } |
| 22 | |
| 23 | private: |
| 24 | SourcePositionTable* source_positions_; |
| 25 | }; |
| 26 | |
| 27 | |
| 28 | SourcePositionTable::SourcePositionTable(Graph* graph) |
| 29 | : graph_(graph), |
| 30 | decorator_(NULL), |
| 31 | current_position_(SourcePosition::Invalid()), |
| 32 | table_(graph->zone()) {} |
| 33 | |
| 34 | |
| 35 | void SourcePositionTable::AddDecorator() { |
| 36 | DCHECK(decorator_ == NULL); |
| 37 | decorator_ = new (graph_->zone()) Decorator(this); |
| 38 | graph_->AddDecorator(decorator_); |
| 39 | } |
| 40 | |
| 41 | |
| 42 | void SourcePositionTable::RemoveDecorator() { |
| 43 | DCHECK(decorator_ != NULL); |
| 44 | graph_->RemoveDecorator(decorator_); |
| 45 | decorator_ = NULL; |
| 46 | } |
| 47 | |
| 48 | |
| 49 | SourcePosition SourcePositionTable::GetSourcePosition(Node* node) { |
| 50 | return table_.Get(node); |
| 51 | } |
| 52 | |
| 53 | } // namespace compiler |
| 54 | } // namespace internal |
| 55 | } // namespace v8 |