Land the Fan (disabled)

src/compiler/source-position.cc

+// 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) {
+    ASSERT(!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) {}
+
+
+void SourcePositionTable::AddDecorator() {
+  ASSERT(decorator_ == NULL);
+  decorator_ = new (graph_->zone()) Decorator(this);
+  graph_->AddDecorator(decorator_);
+}
+
+
+void SourcePositionTable::RemoveDecorator() {
+  ASSERT(decorator_ != NULL);
+  graph_->RemoveDecorator(decorator_);
+  decorator_ = NULL;
+}
+
+
+SourcePosition SourcePositionTable::GetSourcePosition(Node* node) {
+  return table_.Get(node);
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8