/home/arjun/llvm-project/llvm/include/llvm/Support/SMLoc.h
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1 | | //===- SMLoc.h - Source location for use with diagnostics -------*- 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 | | // This file declares the SMLoc class. This class encapsulates a location in |
10 | | // source code for use in diagnostics. |
11 | | // |
12 | | //===----------------------------------------------------------------------===// |
13 | | |
14 | | #ifndef LLVM_SUPPORT_SMLOC_H |
15 | | #define LLVM_SUPPORT_SMLOC_H |
16 | | |
17 | | #include "llvm/ADT/None.h" |
18 | | #include <cassert> |
19 | | |
20 | | namespace llvm { |
21 | | |
22 | | /// Represents a location in source code. |
23 | | class SMLoc { |
24 | | const char *Ptr = nullptr; |
25 | | |
26 | | public: |
27 | 0 | SMLoc() = default; |
28 | | |
29 | 0 | bool isValid() const { return Ptr != nullptr; } |
30 | | |
31 | 0 | bool operator==(const SMLoc &RHS) const { return RHS.Ptr == Ptr; } |
32 | 0 | bool operator!=(const SMLoc &RHS) const { return RHS.Ptr != Ptr; } |
33 | | |
34 | 0 | const char *getPointer() const { return Ptr; } |
35 | | |
36 | 0 | static SMLoc getFromPointer(const char *Ptr) { |
37 | 0 | SMLoc L; |
38 | 0 | L.Ptr = Ptr; |
39 | 0 | return L; |
40 | 0 | } |
41 | | }; |
42 | | |
43 | | /// Represents a range in source code. |
44 | | /// |
45 | | /// SMRange is implemented using a half-open range, as is the convention in C++. |
46 | | /// In the string "abc", the range [1,3) represents the substring "bc", and the |
47 | | /// range [2,2) represents an empty range between the characters "b" and "c". |
48 | | class SMRange { |
49 | | public: |
50 | | SMLoc Start, End; |
51 | | |
52 | 0 | SMRange() = default; |
53 | 0 | SMRange(NoneType) {} |
54 | 0 | SMRange(SMLoc St, SMLoc En) : Start(St), End(En) { |
55 | 0 | assert(Start.isValid() == End.isValid() && |
56 | 0 | "Start and End should either both be valid or both be invalid!"); |
57 | 0 | } |
58 | | |
59 | 0 | bool isValid() const { return Start.isValid(); } |
60 | | }; |
61 | | |
62 | | } // end namespace llvm |
63 | | |
64 | | #endif // LLVM_SUPPORT_SMLOC_H |