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1 //===----- FileOffset.h - Offset in a file ----------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef LLVM_CLANG_EDIT_FILEOFFSET_H
11 #define LLVM_CLANG_EDIT_FILEOFFSET_H
12 
13 #include "clang/Basic/SourceLocation.h"
14 
15 namespace clang {
16 
17 namespace edit {
18 
19 class FileOffset {
20   FileID FID;
21   unsigned Offs;
22 public:
FileOffset()23   FileOffset() : Offs(0) { }
FileOffset(FileID fid,unsigned offs)24   FileOffset(FileID fid, unsigned offs) : FID(fid), Offs(offs) { }
25 
isInvalid()26   bool isInvalid() const { return FID.isInvalid(); }
27 
getFID()28   FileID getFID() const { return FID; }
getOffset()29   unsigned getOffset() const { return Offs; }
30 
getWithOffset(unsigned offset)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   friend bool operator!=(FileOffset LHS, FileOffset RHS) {
41     return !(LHS == RHS);
42   }
43   friend bool operator<(FileOffset LHS, FileOffset RHS) {
44     return std::tie(LHS.FID, LHS.Offs) < std::tie(RHS.FID, RHS.Offs);
45   }
46   friend bool operator>(FileOffset LHS, FileOffset RHS) {
47     return RHS < LHS;
48   }
49   friend bool operator>=(FileOffset LHS, FileOffset RHS) {
50     return !(LHS < RHS);
51   }
52   friend bool operator<=(FileOffset LHS, FileOffset RHS) {
53     return !(RHS < LHS);
54   }
55 };
56 
57 }
58 
59 } // end namespace clang
60 
61 #endif
62