SMLoc.h revision 18e2f6e94cf9dc48bfc6dfa3848971aa88e334da 
1//===- SMLoc.h - Source location for use with diagnostics -------*- 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// This file declares the SMLoc class.  This class encapsulates a location in
11// source code for use in diagnostics.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef SUPPORT_SMLOC_H
16#define SUPPORT_SMLOC_H
17
18#include <cassert>
19
20namespace llvm {
21
22/// SMLoc - Represents a location in source code.
23class SMLoc {
24  const char *Ptr;
25public:
26  SMLoc() : Ptr(0) {}
27  SMLoc(const SMLoc &RHS) : Ptr(RHS.Ptr) {}
28
29  bool isValid() const { return Ptr != 0; }
30
31  bool operator==(const SMLoc &RHS) const { return RHS.Ptr == Ptr; }
32  bool operator!=(const SMLoc &RHS) const { return RHS.Ptr != Ptr; }
33
34  const char *getPointer() const { return Ptr; }
35
36  static SMLoc getFromPointer(const char *Ptr) {
37    SMLoc L;
38    L.Ptr = Ptr;
39    return L;
40  }
41};
42
43/// SMRange - Represents a range in source code.  Note that unlike standard STL
44/// ranges, the locations specified are considered to be *inclusive*.  For
45/// example, [X,X] *does* include X, it isn't an empty range.
46class SMRange {
47public:
48  SMLoc Start, End;
49
50  SMRange() {}
51  SMRange(SMLoc St, SMLoc En) : Start(St), End(En) {
52    assert(Start.isValid() == End.isValid() &&
53           "Start and end should either both be valid or both be invalid!");
54  }
55
56  bool isValid() const { return Start.isValid(); }
57};
58
59} // end namespace llvm
60
61#endif
62
63