1//===- FileOffset.h - Offset in a file --------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_CLANG_EDIT_FILEOFFSET_H
10#define LLVM_CLANG_EDIT_FILEOFFSET_H
11
12#include "clang/Basic/SourceLocation.h"
13#include <tuple>
14
15namespace clang {
16namespace edit {
17
18class FileOffset {
19 FileID FID;
20 unsigned Offs = 0;
21
22public:
23 FileOffset() = default;
24 FileOffset(FileID fid, unsigned offs) : FID(fid), Offs(offs) {}
25
26 bool isInvalid() const { return FID.isInvalid(); }
27
28 FileID getFID() const { return FID; }
29 unsigned getOffset() const { return Offs; }
30
31 FileOffset getWithOffset(unsigned offset) const {
32 FileOffset NewOffs = *this;
33 NewOffs.Offs += offset;
34 return NewOffs;
35 }
36
37 friend bool operator==(FileOffset LHS, FileOffset RHS) {
38 return LHS.FID == RHS.FID && LHS.Offs == RHS.Offs;
39 }
40
41 friend bool operator!=(FileOffset LHS, FileOffset RHS) {
42 return !(LHS == RHS);
43 }
44
45 friend bool operator<(FileOffset LHS, FileOffset RHS) {
46 return std::tie(LHS.FID, LHS.Offs) < std::tie(RHS.FID, RHS.Offs);
47 }
48
49 friend bool operator>(FileOffset LHS, FileOffset RHS) {
50 return RHS < LHS;
51 }
52
53 friend bool operator>=(FileOffset LHS, FileOffset RHS) {
54 return !(LHS < RHS);
55 }
56
57 friend bool operator<=(FileOffset LHS, FileOffset RHS) {
58 return !(RHS < LHS);
59 }
60};
61
62} // namespace edit
63} // namespace clang
64
65#endif // LLVM_CLANG_EDIT_FILEOFFSET_H
66