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// 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/compiler-source-position-table.h"
#include "src/compiler/graph.h"
#include "src/compiler/node-aux-data.h"
namespace v8 {
namespace internal {
namespace compiler {
class SourcePositionTable::Decorator final : public GraphDecorator {
public:
explicit Decorator(SourcePositionTable* source_positions)
: source_positions_(source_positions) {}
void Decorate(Node* node) final {
source_positions_->SetSourcePosition(node,
source_positions_->current_position_);
}
private:
SourcePositionTable* source_positions_;
};
SourcePositionTable::SourcePositionTable(Graph* graph)
: graph_(graph),
decorator_(nullptr),
current_position_(SourcePosition::Unknown()),
table_(graph->zone()) {}
void SourcePositionTable::AddDecorator() {
DCHECK_NULL(decorator_);
decorator_ = new (graph_->zone()) Decorator(this);
graph_->AddDecorator(decorator_);
}
void SourcePositionTable::RemoveDecorator() {
DCHECK_NOT_NULL(decorator_);
graph_->RemoveDecorator(decorator_);
decorator_ = nullptr;
}
SourcePosition SourcePositionTable::GetSourcePosition(Node* node) const {
return table_.Get(node);
}
void SourcePositionTable::SetSourcePosition(Node* node,
SourcePosition position) {
table_.Set(node, position);
}
void SourcePositionTable::PrintJson(std::ostream& os) const {
os << "{";
bool needs_comma = false;
for (auto i : table_) {
SourcePosition pos = i.second;
if (pos.IsKnown()) {
if (needs_comma) {
os << ",";
}
os << "\"" << i.first << "\" : ";
pos.PrintJson(os);
needs_comma = true;
}
}
os << "}";
}
} // namespace compiler
} // namespace internal
} // namespace v8