1 //===--- DeclFriend.cpp - C++ Friend Declaration AST Node Implementation --===//
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 implements the AST classes related to C++ friend
11 // declarations.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/DeclFriend.h"
17 #include "clang/AST/DeclTemplate.h"
18 using namespace clang;
19 
20 void FriendDecl::anchor() { }
21 
22 FriendDecl *FriendDecl::getNextFriendSlowCase() {
23   return cast_or_null<FriendDecl>(
24                            NextFriend.get(getASTContext().getExternalSource()));
25 }
26 
27 FriendDecl *FriendDecl::Create(ASTContext &C, DeclContext *DC,
28                                SourceLocation L,
29                                FriendUnion Friend,
30                                SourceLocation FriendL) {
31 #ifndef NDEBUG
32   if (Friend.is<NamedDecl*>()) {
33     NamedDecl *D = Friend.get<NamedDecl*>();
34     assert(isa<FunctionDecl>(D) ||
35            isa<CXXRecordDecl>(D) ||
36            isa<FunctionTemplateDecl>(D) ||
37            isa<ClassTemplateDecl>(D));
38 
39     // As a temporary hack, we permit template instantiation to point
40     // to the original declaration when instantiating members.
41     assert(D->getFriendObjectKind() ||
42            (cast<CXXRecordDecl>(DC)->getTemplateSpecializationKind()));
43   }
44 #endif
45 
46   FriendDecl *FD = new (C) FriendDecl(DC, L, Friend, FriendL);
47   cast<CXXRecordDecl>(DC)->pushFriendDecl(FD);
48   return FD;
49 }
50 
51 FriendDecl *FriendDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
52   void *Mem = AllocateDeserializedDecl(C, ID, sizeof(FriendDecl));
53   return new (Mem) FriendDecl(EmptyShell());
54 }
55