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Unified Diff: src/compiler/source-position.cc

Issue 426233002: Land the Fan (disabled) (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Review feedback, rebase and "git cl format" Created 6 years, 5 months ago
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Index: src/compiler/source-position.cc
diff --git a/src/compiler/source-position.cc b/src/compiler/source-position.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9f122fabf67aeb7e1a5f1367706f967437ba49ca
--- /dev/null
+++ b/src/compiler/source-position.cc
@@ -0,0 +1,55 @@
+// 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
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