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.h" 8 9 namespace v8 { 10 namespace internal { 11 namespace compiler { 12 13 class SourcePositionTable::Decorator final : public GraphDecorator { 14 public: 15 explicit Decorator(SourcePositionTable* source_positions) 16 : source_positions_(source_positions) {} 17 18 void Decorate(Node* node) final { 19 source_positions_->SetSourcePosition(node, 20 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_(nullptr), 31 current_position_(SourcePosition::Unknown()), 32 table_(graph->zone()) {} 33 34 35 void SourcePositionTable::AddDecorator() { 36 DCHECK_NULL(decorator_); 37 decorator_ = new (graph_->zone()) Decorator(this); 38 graph_->AddDecorator(decorator_); 39 } 40 41 42 void SourcePositionTable::RemoveDecorator() { 43 DCHECK_NOT_NULL(decorator_); 44 graph_->RemoveDecorator(decorator_); 45 decorator_ = nullptr; 46 } 47 48 49 SourcePosition SourcePositionTable::GetSourcePosition(Node* node) const { 50 return table_.Get(node); 51 } 52 53 void SourcePositionTable::SetSourcePosition(Node* node, 54 SourcePosition position) { 55 table_.Set(node, position); 56 } 57 58 void SourcePositionTable::Print(std::ostream& os) const { 59 os << "{"; 60 bool needs_comma = false; 61 for (auto i : table_) { 62 SourcePosition pos = i.second; 63 if (pos.IsKnown()) { 64 if (needs_comma) { 65 os << ","; 66 } 67 os << "\"" << i.first << "\"" 68 << ":" << pos.raw(); 69 needs_comma = true; 70 } 71 } 72 os << "}"; 73 } 74 75 } // namespace compiler 76 } // namespace internal 77 } // namespace v8 78
