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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.
#ifndef V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_
#define V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_
#include "src/base/compiler-specific.h"
#include "src/codegen/source-position.h"
#include "src/common/globals.h"
#include "src/compiler/node-aux-data.h"
namespace v8 {
namespace internal {
namespace compiler {
class V8_EXPORT_PRIVATE SourcePositionTable final
: public NON_EXPORTED_BASE(ZoneObject) {
public:
class V8_NODISCARD Scope final {
public:
Scope(SourcePositionTable* source_positions, SourcePosition position)
: source_positions_(source_positions),
prev_position_(source_positions->current_position_) {
Init(position);
}
Scope(SourcePositionTable* source_positions, Node* node)
: source_positions_(source_positions),
prev_position_(source_positions->current_position_) {
Init(source_positions_->GetSourcePosition(node));
}
~Scope() { source_positions_->current_position_ = prev_position_; }
Scope(const Scope&) = delete;
Scope& operator=(const Scope&) = delete;
private:
void Init(SourcePosition position) {
if (position.IsKnown()) source_positions_->current_position_ = position;
}
SourcePositionTable* const source_positions_;
SourcePosition const prev_position_;
};
explicit SourcePositionTable(Graph* graph);
SourcePositionTable(const SourcePositionTable&) = delete;
SourcePositionTable& operator=(const SourcePositionTable&) = delete;
void AddDecorator();
void RemoveDecorator();
SourcePosition GetSourcePosition(Node* node) const;
void SetSourcePosition(Node* node, SourcePosition position);
void SetCurrentPosition(const SourcePosition& pos) {
current_position_ = pos;
}
SourcePosition GetCurrentPosition() const { return current_position_; }
void PrintJson(std::ostream& os) const;
private:
class Decorator;
static SourcePosition UnknownSourcePosition(Zone* zone) {
return SourcePosition::Unknown();
}
Graph* const graph_;
Decorator* decorator_;
SourcePosition current_position_;
NodeAuxData<SourcePosition, UnknownSourcePosition> table_;
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_COMPILER_SOURCE_POSITION_TABLE_H_
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