ObjCMethodList.h revision 360784 
1//===--- ObjCMethodList.h - A singly linked list of methods -----*- 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 ObjCMethodList, a singly-linked list of methods.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_CLANG_SEMA_OBJCMETHODLIST_H
14#define LLVM_CLANG_SEMA_OBJCMETHODLIST_H
15
16#include "clang/AST/DeclObjC.h"
17#include "llvm/ADT/PointerIntPair.h"
18
19namespace clang {
20
21class ObjCMethodDecl;
22
23/// a linked list of methods with the same selector name but different
24/// signatures.
25struct ObjCMethodList {
26  // NOTE: If you add any members to this struct, make sure to serialize them.
27  /// If there is more than one decl with this signature.
28  llvm::PointerIntPair<ObjCMethodDecl *, 1> MethodAndHasMoreThanOneDecl;
29  /// The next list object and 2 bits for extra info.
30  llvm::PointerIntPair<ObjCMethodList *, 2> NextAndExtraBits;
31
32  ObjCMethodList() { }
33  ObjCMethodList(ObjCMethodDecl *M)
34      : MethodAndHasMoreThanOneDecl(M, 0) {}
35  ObjCMethodList(const ObjCMethodList &L)
36      : MethodAndHasMoreThanOneDecl(L.MethodAndHasMoreThanOneDecl),
37        NextAndExtraBits(L.NextAndExtraBits) {}
38
39  ObjCMethodList &operator=(const ObjCMethodList &L) {
40    MethodAndHasMoreThanOneDecl = L.MethodAndHasMoreThanOneDecl;
41    NextAndExtraBits = L.NextAndExtraBits;
42    return *this;
43  }
44
45  ObjCMethodList *getNext() const { return NextAndExtraBits.getPointer(); }
46  unsigned getBits() const { return NextAndExtraBits.getInt(); }
47  void setNext(ObjCMethodList *L) { NextAndExtraBits.setPointer(L); }
48  void setBits(unsigned B) { NextAndExtraBits.setInt(B); }
49
50  ObjCMethodDecl *getMethod() const {
51    return MethodAndHasMoreThanOneDecl.getPointer();
52  }
53  void setMethod(ObjCMethodDecl *M) {
54    return MethodAndHasMoreThanOneDecl.setPointer(M);
55  }
56
57  bool hasMoreThanOneDecl() const {
58    return MethodAndHasMoreThanOneDecl.getInt();
59  }
60  void setHasMoreThanOneDecl(bool B) {
61    return MethodAndHasMoreThanOneDecl.setInt(B);
62  }
63};
64
65}
66
67#endif
68