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//===--- DeclFriend.cpp - C++ Friend Declaration AST Node Implementation --===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the AST classes related to C++ friend
// declarations.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclFriend.h"
#include "clang/AST/DeclTemplate.h"
using namespace clang;
void FriendDecl::anchor() { }
FriendDecl *FriendDecl::getNextFriendSlowCase() {
return cast_or_null<FriendDecl>(
NextFriend.get(getASTContext().getExternalSource()));
}
FriendDecl *FriendDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L,
FriendUnion Friend,
SourceLocation FriendL,
ArrayRef<TemplateParameterList*> FriendTypeTPLists) {
#ifndef NDEBUG
if (Friend.is<NamedDecl*>()) {
NamedDecl *D = Friend.get<NamedDecl*>();
assert(isa<FunctionDecl>(D) ||
isa<CXXRecordDecl>(D) ||
isa<FunctionTemplateDecl>(D) ||
isa<ClassTemplateDecl>(D));
// As a temporary hack, we permit template instantiation to point
// to the original declaration when instantiating members.
assert(D->getFriendObjectKind() ||
(cast<CXXRecordDecl>(DC)->getTemplateSpecializationKind()));
// These template parameters are for friend types only.
assert(FriendTypeTPLists.size() == 0);
}
#endif
std::size_t Extra = FriendTypeTPLists.size() * sizeof(TemplateParameterList*);
FriendDecl *FD = new (C, DC, Extra) FriendDecl(DC, L, Friend, FriendL,
FriendTypeTPLists);
cast<CXXRecordDecl>(DC)->pushFriendDecl(FD);
return FD;
}
FriendDecl *FriendDecl::CreateDeserialized(ASTContext &C, unsigned ID,
unsigned FriendTypeNumTPLists) {
std::size_t Extra = FriendTypeNumTPLists * sizeof(TemplateParameterList*);
return new (C, ID, Extra) FriendDecl(EmptyShell(), FriendTypeNumTPLists);
}
FriendDecl *CXXRecordDecl::getFirstFriend() const {
ExternalASTSource *Source = getParentASTContext().getExternalSource();
Decl *First = data().FirstFriend.get(Source);
return First ? cast<FriendDecl>(First) : nullptr;
}
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