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72 lines
1.7 KiB
72 lines
1.7 KiB
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/compiler/source-position.h"
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#include "src/compiler/graph.h"
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#include "src/compiler/node-aux-data.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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class SourcePositionTable::Decorator final : public GraphDecorator {
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public:
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explicit Decorator(SourcePositionTable* source_positions)
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: source_positions_(source_positions) {}
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void Decorate(Node* node) final {
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source_positions_->table_.Set(node, source_positions_->current_position_);
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}
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private:
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SourcePositionTable* source_positions_;
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};
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SourcePositionTable::SourcePositionTable(Graph* graph)
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: graph_(graph),
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decorator_(nullptr),
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current_position_(SourcePosition::Unknown()),
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table_(graph->zone()) {}
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void SourcePositionTable::AddDecorator() {
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DCHECK_NULL(decorator_);
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decorator_ = new (graph_->zone()) Decorator(this);
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graph_->AddDecorator(decorator_);
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}
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void SourcePositionTable::RemoveDecorator() {
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DCHECK_NOT_NULL(decorator_);
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graph_->RemoveDecorator(decorator_);
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decorator_ = nullptr;
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}
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SourcePosition SourcePositionTable::GetSourcePosition(Node* node) const {
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return table_.Get(node);
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}
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void SourcePositionTable::Print(std::ostream& os) const {
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os << "{";
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bool needs_comma = false;
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for (auto i : table_) {
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SourcePosition pos = i.second;
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if (pos.IsKnown()) {
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if (needs_comma) {
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os << ",";
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}
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os << "\"" << i.first << "\""
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<< ":" << pos.raw();
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needs_comma = true;
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}
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}
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os << "}";
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}
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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