192b7f70c924cbf4514e9e434cea7def51ab49860John McCall//===--- DeclFriend.cpp - C++ Friend Declaration AST Node Implementation --===// 292b7f70c924cbf4514e9e434cea7def51ab49860John McCall// 392b7f70c924cbf4514e9e434cea7def51ab49860John McCall// The LLVM Compiler Infrastructure 492b7f70c924cbf4514e9e434cea7def51ab49860John McCall// 592b7f70c924cbf4514e9e434cea7def51ab49860John McCall// This file is distributed under the University of Illinois Open Source 692b7f70c924cbf4514e9e434cea7def51ab49860John McCall// License. See LICENSE.TXT for details. 792b7f70c924cbf4514e9e434cea7def51ab49860John McCall// 892b7f70c924cbf4514e9e434cea7def51ab49860John McCall//===----------------------------------------------------------------------===// 992b7f70c924cbf4514e9e434cea7def51ab49860John McCall// 1092b7f70c924cbf4514e9e434cea7def51ab49860John McCall// This file implements the AST classes related to C++ friend 1192b7f70c924cbf4514e9e434cea7def51ab49860John McCall// declarations. 1292b7f70c924cbf4514e9e434cea7def51ab49860John McCall// 1392b7f70c924cbf4514e9e434cea7def51ab49860John McCall//===----------------------------------------------------------------------===// 1492b7f70c924cbf4514e9e434cea7def51ab49860John McCall 15471c8b49982d1132f30b0b0da27fef94fd6e4f67Benjamin Kramer#include "clang/AST/ASTContext.h" 1692b7f70c924cbf4514e9e434cea7def51ab49860John McCall#include "clang/AST/DeclFriend.h" 1792b7f70c924cbf4514e9e434cea7def51ab49860John McCall#include "clang/AST/DeclTemplate.h" 1892b7f70c924cbf4514e9e434cea7def51ab49860John McCallusing namespace clang; 1992b7f70c924cbf4514e9e434cea7def51ab49860John McCall 2099ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikievoid FriendDecl::anchor() { } 2199ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikie 22471c8b49982d1132f30b0b0da27fef94fd6e4f67Benjamin KramerFriendDecl *FriendDecl::getNextFriendSlowCase() { 23471c8b49982d1132f30b0b0da27fef94fd6e4f67Benjamin Kramer return cast_or_null<FriendDecl>( 24471c8b49982d1132f30b0b0da27fef94fd6e4f67Benjamin Kramer NextFriend.get(getASTContext().getExternalSource())); 25471c8b49982d1132f30b0b0da27fef94fd6e4f67Benjamin Kramer} 26471c8b49982d1132f30b0b0da27fef94fd6e4f67Benjamin Kramer 2792b7f70c924cbf4514e9e434cea7def51ab49860John McCallFriendDecl *FriendDecl::Create(ASTContext &C, DeclContext *DC, 2892b7f70c924cbf4514e9e434cea7def51ab49860John McCall SourceLocation L, 2992b7f70c924cbf4514e9e434cea7def51ab49860John McCall FriendUnion Friend, 308c84028ed9aa0dfd54ab729dee78f29c961d7f37Enea Zaffanella SourceLocation FriendL, 318c84028ed9aa0dfd54ab729dee78f29c961d7f37Enea Zaffanella ArrayRef<TemplateParameterList*> FriendTypeTPLists) { 3292b7f70c924cbf4514e9e434cea7def51ab49860John McCall#ifndef NDEBUG 3392b7f70c924cbf4514e9e434cea7def51ab49860John McCall if (Friend.is<NamedDecl*>()) { 3492b7f70c924cbf4514e9e434cea7def51ab49860John McCall NamedDecl *D = Friend.get<NamedDecl*>(); 3592b7f70c924cbf4514e9e434cea7def51ab49860John McCall assert(isa<FunctionDecl>(D) || 3692b7f70c924cbf4514e9e434cea7def51ab49860John McCall isa<CXXRecordDecl>(D) || 3792b7f70c924cbf4514e9e434cea7def51ab49860John McCall isa<FunctionTemplateDecl>(D) || 3892b7f70c924cbf4514e9e434cea7def51ab49860John McCall isa<ClassTemplateDecl>(D)); 3992b7f70c924cbf4514e9e434cea7def51ab49860John McCall 4092b7f70c924cbf4514e9e434cea7def51ab49860John McCall // As a temporary hack, we permit template instantiation to point 4192b7f70c924cbf4514e9e434cea7def51ab49860John McCall // to the original declaration when instantiating members. 4292b7f70c924cbf4514e9e434cea7def51ab49860John McCall assert(D->getFriendObjectKind() || 4392b7f70c924cbf4514e9e434cea7def51ab49860John McCall (cast<CXXRecordDecl>(DC)->getTemplateSpecializationKind())); 448c84028ed9aa0dfd54ab729dee78f29c961d7f37Enea Zaffanella // These template parameters are for friend types only. 458c84028ed9aa0dfd54ab729dee78f29c961d7f37Enea Zaffanella assert(FriendTypeTPLists.size() == 0); 4692b7f70c924cbf4514e9e434cea7def51ab49860John McCall } 4792b7f70c924cbf4514e9e434cea7def51ab49860John McCall#endif 4892b7f70c924cbf4514e9e434cea7def51ab49860John McCall 49651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines std::size_t Extra = FriendTypeTPLists.size() * sizeof(TemplateParameterList*); 50651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines FriendDecl *FD = new (C, DC, Extra) FriendDecl(DC, L, Friend, FriendL, 51651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines FriendTypeTPLists); 52d60e22e601852ae1345f01514318a0951dc09f89John McCall cast<CXXRecordDecl>(DC)->pushFriendDecl(FD); 53d60e22e601852ae1345f01514318a0951dc09f89John McCall return FD; 5492b7f70c924cbf4514e9e434cea7def51ab49860John McCall} 556764334dfa73d67cbbb1b1fc8fe00440aad00f2aArgyrios Kyrtzidis 568c84028ed9aa0dfd54ab729dee78f29c961d7f37Enea ZaffanellaFriendDecl *FriendDecl::CreateDeserialized(ASTContext &C, unsigned ID, 578c84028ed9aa0dfd54ab729dee78f29c961d7f37Enea Zaffanella unsigned FriendTypeNumTPLists) { 58651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines std::size_t Extra = FriendTypeNumTPLists * sizeof(TemplateParameterList*); 59651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return new (C, ID, Extra) FriendDecl(EmptyShell(), FriendTypeNumTPLists); 606764334dfa73d67cbbb1b1fc8fe00440aad00f2aArgyrios Kyrtzidis} 618c84028ed9aa0dfd54ab729dee78f29c961d7f37Enea Zaffanella 624fc5089e306fe606f2e3e4fa58063ebab35deb62Richard SmithFriendDecl *CXXRecordDecl::getFirstFriend() const { 634fc5089e306fe606f2e3e4fa58063ebab35deb62Richard Smith ExternalASTSource *Source = getParentASTContext().getExternalSource(); 644fc5089e306fe606f2e3e4fa58063ebab35deb62Richard Smith Decl *First = data().FirstFriend.get(Source); 656bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return First ? cast<FriendDecl>(First) : nullptr; 664fc5089e306fe606f2e3e4fa58063ebab35deb62Richard Smith} 67