1 //===--- ObjCMethodList.h - A singly linked list of methods -----*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file defines ObjCMethodList, a singly-linked list of methods.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CLANG_SEMA_OBJCMETHODLIST_H
15 #define LLVM_CLANG_SEMA_OBJCMETHODLIST_H
16 
17 #include "clang/AST/DeclObjC.h"
18 #include "llvm/ADT/PointerIntPair.h"
19 
20 namespace clang {
21 
22 class ObjCMethodDecl;
23 
24 /// \brief a linked list of methods with the same selector name but different
25 /// signatures.
26 struct ObjCMethodList {
27   // NOTE: If you add any members to this struct, make sure to serialize them.
28   /// \brief If there is more than one decl with this signature.
29   llvm::PointerIntPair<ObjCMethodDecl *, 1> MethodAndHasMoreThanOneDecl;
30   /// \brief The next list object and 2 bits for extra info.
31   llvm::PointerIntPair<ObjCMethodList *, 2> NextAndExtraBits;
32 
ObjCMethodListObjCMethodList33   ObjCMethodList() { }
ObjCMethodListObjCMethodList34   ObjCMethodList(ObjCMethodDecl *M)
35       : MethodAndHasMoreThanOneDecl(M, 0) {}
ObjCMethodListObjCMethodList36   ObjCMethodList(const ObjCMethodList &L)
37       : MethodAndHasMoreThanOneDecl(L.MethodAndHasMoreThanOneDecl),
38         NextAndExtraBits(L.NextAndExtraBits) {}
39 
getNextObjCMethodList40   ObjCMethodList *getNext() const { return NextAndExtraBits.getPointer(); }
getBitsObjCMethodList41   unsigned getBits() const { return NextAndExtraBits.getInt(); }
setNextObjCMethodList42   void setNext(ObjCMethodList *L) { NextAndExtraBits.setPointer(L); }
setBitsObjCMethodList43   void setBits(unsigned B) { NextAndExtraBits.setInt(B); }
44 
getMethodObjCMethodList45   ObjCMethodDecl *getMethod() const {
46     return MethodAndHasMoreThanOneDecl.getPointer();
47   }
setMethodObjCMethodList48   void setMethod(ObjCMethodDecl *M) {
49     return MethodAndHasMoreThanOneDecl.setPointer(M);
50   }
51 
hasMoreThanOneDeclObjCMethodList52   bool hasMoreThanOneDecl() const {
53     return MethodAndHasMoreThanOneDecl.getInt();
54   }
setHasMoreThanOneDeclObjCMethodList55   void setHasMoreThanOneDecl(bool B) {
56     return MethodAndHasMoreThanOneDecl.setInt(B);
57   }
58 };
59 
60 }
61 
62 #endif
63