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