clang  10.0.0svn
Weak.h
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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 
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:
30  : alias(nullptr), loc(SourceLocation()), used(false) {}
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
IdentifierInfo * getAlias() const
Definition: Weak.h:33
One of these records is kept for each identifier that is lexed.
bool operator==(WeakInfo RHS) const
Definition: Weak.h:37
Captures information about a #pragma weak directive.
Definition: Weak.h:24
SourceLocation getLocation() const
Definition: Weak.h:34
#define false
Definition: stdbool.h:17
Encodes a location in the source.
void setUsed(bool Used=true)
Definition: Weak.h:35
Dataflow Directional Tag Classes.
WeakInfo(IdentifierInfo *Alias, SourceLocation Loc)
Definition: Weak.h:31
bool getUsed()
Definition: Weak.h:36
Defines the clang::SourceLocation class and associated facilities.
bool operator!=(WeakInfo RHS) const
Definition: Weak.h:40