1 //===-- UnresolvedSet.h - Unresolved sets of declarations  ------*- 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 WeakInfo class, which is used to store
10 //  information about the target of a #pragma weak directive.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CLANG_SEMA_WEAK_H
15 #define LLVM_CLANG_SEMA_WEAK_H
16 
17 #include "clang/Basic/SourceLocation.h"
18 
19 namespace clang {
20 
21 class IdentifierInfo;
22 
23 /// Captures information about a \#pragma weak directive.
24 class WeakInfo {
25   IdentifierInfo *alias;  // alias (optional)
26   SourceLocation loc;     // for diagnostics
27   bool used;              // identifier later declared?
28 public:
29   WeakInfo()
30     : alias(nullptr), loc(SourceLocation()), used(false) {}
31   WeakInfo(IdentifierInfo *Alias, SourceLocation Loc)
32     : alias(Alias), loc(Loc), used(false) {}
33   inline IdentifierInfo * getAlias() const { return alias; }
34   inline SourceLocation getLocation() const { return loc; }
35   void setUsed(bool Used=true) { used = Used; }
36   inline bool getUsed() { return used; }
37   bool operator==(WeakInfo RHS) const {
38     return alias == RHS.getAlias() && loc == RHS.getLocation();
39   }
40   bool operator!=(WeakInfo RHS) const { return !(*this == RHS); }
41 };
42 
43 } // end namespace clang
44 
45 #endif // LLVM_CLANG_SEMA_WEAK_H
46