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//===- FileOffset.h - Offset in a file --------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_EDIT_FILEOFFSET_H
#define LLVM_CLANG_EDIT_FILEOFFSET_H
#include "clang/Basic/SourceLocation.h"
#include <tuple>
namespace clang {
namespace edit {
class FileOffset {
FileID FID;
unsigned Offs = 0;
public:
FileOffset() = default;
FileOffset(FileID fid, unsigned offs) : FID(fid), Offs(offs) {}
bool isInvalid() const { return FID.isInvalid(); }
FileID getFID() const { return FID; }
unsigned getOffset() const { return Offs; }
FileOffset getWithOffset(unsigned offset) const {
FileOffset NewOffs = *this;
NewOffs.Offs += offset;
return NewOffs;
}
friend bool operator==(FileOffset LHS, FileOffset RHS) {
return LHS.FID == RHS.FID && LHS.Offs == RHS.Offs;
}
friend bool operator!=(FileOffset LHS, FileOffset RHS) {
return !(LHS == RHS);
}
friend bool operator<(FileOffset LHS, FileOffset RHS) {
return std::tie(LHS.FID, LHS.Offs) < std::tie(RHS.FID, RHS.Offs);
}
friend bool operator>(FileOffset LHS, FileOffset RHS) {
return RHS < LHS;
}
friend bool operator>=(FileOffset LHS, FileOffset RHS) {
return !(LHS < RHS);
}
friend bool operator<=(FileOffset LHS, FileOffset RHS) {
return !(RHS < LHS);
}
};
} // namespace edit
} // namespace clang
#endif // LLVM_CLANG_EDIT_FILEOFFSET_H
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