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1 | //===- MCLabel.h - Machine Code Directional Local Labels --------*- 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 contains the declaration of the MCLabel class. | |
11 | // | |
12 | //===----------------------------------------------------------------------===// | |
13 | ||
14 | #ifndef LLVM_MC_MCLABEL_H | |
15 | #define LLVM_MC_MCLABEL_H | |
16 | ||
17 | #include "llvm/Support/Compiler.h" | |
18 | ||
19 | namespace llvm { | |
20 | class MCContext; | |
21 | class raw_ostream; | |
22 | ||
23 | /// MCLabel - Instances of this class represent a label name in the MC file, | |
24 | /// and MCLabel are created and unique'd by the MCContext class. MCLabel | |
25 | /// should only be constructed for valid instances in the object file. | |
26 | class MCLabel { | |
27 | // Instance - the instance number of this Directional Local Label | |
28 | unsigned Instance; | |
29 | ||
30 | private: // MCContext creates and uniques these. | |
31 | friend class MCContext; | |
32 | MCLabel(unsigned instance) | |
33 | : Instance(instance) {} | |
34 | ||
35 | MCLabel(const MCLabel&) LLVM_DELETED_FUNCTION; | |
36 | void operator=(const MCLabel&) LLVM_DELETED_FUNCTION; | |
37 | public: | |
38 | /// getInstance - Get the current instance of this Directional Local Label. | |
39 | unsigned getInstance() const { return Instance; } | |
40 | ||
41 | /// incInstance - Increment the current instance of this Directional Local | |
42 | /// Label. | |
43 | unsigned incInstance() { return ++Instance; } | |
44 | ||
45 | /// print - Print the value to the stream \p OS. | |
46 | void print(raw_ostream &OS) const; | |
47 | ||
48 | /// dump - Print the value to stderr. | |
49 | void dump() const; | |
50 | }; | |
51 | ||
52 | inline raw_ostream &operator<<(raw_ostream &OS, const MCLabel &Label) { | |
53 | Label.print(OS); | |
54 | return OS; | |
55 | } | |
56 | } // end namespace llvm | |
57 | ||
58 | #endif |