/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/AST/DeclAccessPair.h
Line | Count | Source |
1 | | //===--- DeclAccessPair.h - A decl bundled with its path access -*- 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 defines the DeclAccessPair class, which provides an |
10 | | // efficient representation of a pair of a NamedDecl* and an |
11 | | // AccessSpecifier. Generally the access specifier gives the |
12 | | // natural access of a declaration when named in a class, as |
13 | | // defined in C++ [class.access.base]p1. |
14 | | // |
15 | | //===----------------------------------------------------------------------===// |
16 | | |
17 | | #ifndef LLVM_CLANG_AST_DECLACCESSPAIR_H |
18 | | #define LLVM_CLANG_AST_DECLACCESSPAIR_H |
19 | | |
20 | | #include "clang/Basic/Specifiers.h" |
21 | | #include "llvm/Support/DataTypes.h" |
22 | | |
23 | | namespace clang { |
24 | | |
25 | | class NamedDecl; |
26 | | |
27 | | /// A POD class for pairing a NamedDecl* with an access specifier. |
28 | | /// Can be put into unions. |
29 | | class DeclAccessPair { |
30 | | uintptr_t Ptr; // we'd use llvm::PointerUnion, but it isn't trivial |
31 | | |
32 | | enum { Mask = 0x3 }; |
33 | | |
34 | | public: |
35 | 307M | static DeclAccessPair make(NamedDecl *D, AccessSpecifier AS) { |
36 | 307M | DeclAccessPair p; |
37 | 307M | p.set(D, AS); |
38 | 307M | return p; |
39 | 307M | } |
40 | | |
41 | 990M | NamedDecl *getDecl() const { |
42 | 990M | return reinterpret_cast<NamedDecl*>(~Mask & Ptr); |
43 | 990M | } |
44 | 12.8M | AccessSpecifier getAccess() const { |
45 | 12.8M | return AccessSpecifier(Mask & Ptr); |
46 | 12.8M | } |
47 | | |
48 | 205 | void setDecl(NamedDecl *D) { |
49 | 205 | set(D, getAccess()); |
50 | 205 | } |
51 | 68.1k | void setAccess(AccessSpecifier AS) { |
52 | 68.1k | set(getDecl(), AS); |
53 | 68.1k | } |
54 | 307M | void set(NamedDecl *D, AccessSpecifier AS) { |
55 | 307M | Ptr = uintptr_t(AS) | reinterpret_cast<uintptr_t>(D); |
56 | 307M | } |
57 | | |
58 | 127M | operator NamedDecl*() const { return getDecl(); } |
59 | 216M | NamedDecl *operator->() const { return getDecl(); } |
60 | | }; |
61 | | } |
62 | | |
63 | | #endif |