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      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