clang  10.0.0svn
FileOffset.h
Go to the documentation of this file.
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 
13 #include <tuple>
14 
15 namespace clang {
16 namespace edit {
17 
18 class FileOffset {
19  FileID FID;
20  unsigned Offs = 0;
21 
22 public:
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
FileOffset(FileID fid, unsigned offs)
Definition: FileOffset.h:24
friend bool operator==(FileOffset LHS, FileOffset RHS)
Definition: FileOffset.h:37
friend bool operator>(FileOffset LHS, FileOffset RHS)
Definition: FileOffset.h:49
bool isInvalid() const
FileID getFID() const
Definition: FileOffset.h:28
friend bool operator<(FileOffset LHS, FileOffset RHS)
Definition: FileOffset.h:45
FileOffset getWithOffset(unsigned offset) const
Definition: FileOffset.h:31
friend bool operator!=(FileOffset LHS, FileOffset RHS)
Definition: FileOffset.h:41
An opaque identifier used by SourceManager which refers to a source file (MemoryBuffer) along with it...
Dataflow Directional Tag Classes.
unsigned getOffset() const
Definition: FileOffset.h:29
bool isInvalid() const
Definition: FileOffset.h:26
friend bool operator<=(FileOffset LHS, FileOffset RHS)
Definition: FileOffset.h:57
Defines the clang::SourceLocation class and associated facilities.
friend bool operator>=(FileOffset LHS, FileOffset RHS)
Definition: FileOffset.h:53