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// Copyright 2018 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_TORQUE_SOURCE_POSITIONS_H_
#define V8_TORQUE_SOURCE_POSITIONS_H_
#include <iostream>
#include "src/torque/contextual.h"
namespace v8 {
namespace internal {
namespace torque {
struct SourcePosition;
class SourceId {
public:
static SourceId Invalid() { return SourceId(-1); }
bool IsValid() const { return id_ != -1; }
int operator==(const SourceId& s) const { return id_ == s.id_; }
bool operator<(const SourceId& s) const { return id_ < s.id_; }
private:
explicit SourceId(int id) : id_(id) {}
int id_;
friend struct SourcePosition;
friend class SourceFileMap;
};
struct LineAndColumn {
int line;
int column;
static LineAndColumn Invalid() { return {-1, -1}; }
bool operator==(const LineAndColumn& other) const {
return line == other.line && column == other.column;
}
};
struct SourcePosition {
SourceId source;
LineAndColumn start;
LineAndColumn end;
static SourcePosition Invalid() {
SourcePosition pos{SourceId::Invalid(), LineAndColumn::Invalid(),
LineAndColumn::Invalid()};
return pos;
}
bool CompareStartIgnoreColumn(const SourcePosition& pos) const {
return start.line == pos.start.line && source == pos.source;
}
bool Contains(LineAndColumn pos) const {
if (pos.line < start.line || pos.line > end.line) return false;
if (pos.line == start.line && pos.column < start.column) return false;
if (pos.line == end.line && pos.column >= end.column) return false;
return true;
}
bool operator==(const SourcePosition& pos) const {
return source == pos.source && start == pos.start && end == pos.end;
}
};
DECLARE_CONTEXTUAL_VARIABLE(CurrentSourceFile, SourceId);
DECLARE_CONTEXTUAL_VARIABLE(CurrentSourcePosition, SourcePosition);
class SourceFileMap : public ContextualClass<SourceFileMap> {
public:
SourceFileMap() = default;
static const std::string& GetSource(SourceId source) {
CHECK(source.IsValid());
return Get().sources_[source.id_];
}
static SourceId AddSource(std::string path) {
Get().sources_.push_back(std::move(path));
return SourceId(static_cast<int>(Get().sources_.size()) - 1);
}
static SourceId GetSourceId(const std::string& path) {
for (size_t i = 0; i < Get().sources_.size(); ++i) {
if (Get().sources_[i] == path) {
return SourceId(static_cast<int>(i));
}
}
return SourceId::Invalid();
}
private:
std::vector<std::string> sources_;
};
inline std::string PositionAsString(SourcePosition pos) {
return SourceFileMap::GetSource(pos.source) + ":" +
std::to_string(pos.start.line + 1) + ":" +
std::to_string(pos.start.column + 1);
}
inline std::ostream& operator<<(std::ostream& out, SourcePosition pos) {
return out << PositionAsString(pos);
}
} // namespace torque
} // namespace internal
} // namespace v8
#endif // V8_TORQUE_SOURCE_POSITIONS_H_
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