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 
19 namespace clang {
20 
21 class ObjCMethodDecl;
22 
23 /// a linked list of methods with the same selector name but different
24 /// signatures.
25 struct 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 *getNext() const { return NextAndExtraBits.getPointer(); }
40   unsigned getBits() const { return NextAndExtraBits.getInt(); }
41   void setNext(ObjCMethodList *L) { NextAndExtraBits.setPointer(L); }
42   void setBits(unsigned B) { NextAndExtraBits.setInt(B); }
43 
44   ObjCMethodDecl *getMethod() const {
45     return MethodAndHasMoreThanOneDecl.getPointer();
46   }
47   void setMethod(ObjCMethodDecl *M) {
48     return MethodAndHasMoreThanOneDecl.setPointer(M);
49   }
50 
51   bool hasMoreThanOneDecl() const {
52     return MethodAndHasMoreThanOneDecl.getInt();
53   }
54   void setHasMoreThanOneDecl(bool B) {
55     return MethodAndHasMoreThanOneDecl.setInt(B);
56   }
57 };
58 
59 }
60 
61 #endif
62