path: root/lib/AST/DeclObjC.cpp

//===--- DeclObjC.cpp - ObjC 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 Objective-C related Decl classes.
//
//===----------------------------------------------------------------------===//

#include "clang/AST/DeclObjC.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Stmt.h"
#include "clang/AST/ASTMutationListener.h"
#include "llvm/ADT/STLExtras.h"
using namespace clang;

//===----------------------------------------------------------------------===//
// ObjCListBase
//===----------------------------------------------------------------------===//

void ObjCListBase::set(void *const* InList, unsigned Elts, ASTContext &Ctx) {
  List = 0;
  if (Elts == 0) return;  // Setting to an empty list is a noop.


  List = new (Ctx) void*[Elts];
  NumElts = Elts;
  memcpy(List, InList, sizeof(void*)*Elts);
}

void ObjCProtocolList::set(ObjCProtocolDecl* const* InList, unsigned Elts, 
                           const SourceLocation *Locs, ASTContext &Ctx) {
  if (Elts == 0)
    return;

  Locations = new (Ctx) SourceLocation[Elts];
  memcpy(Locations, Locs, sizeof(SourceLocation) * Elts);
  set(InList, Elts, Ctx);
}

//===----------------------------------------------------------------------===//
// ObjCInterfaceDecl
//===----------------------------------------------------------------------===//

void ObjCContainerDecl::anchor() { }

/// getIvarDecl - This method looks up an ivar in this ContextDecl.
///
ObjCIvarDecl *
ObjCContainerDecl::getIvarDecl(IdentifierInfo *Id) const {
  lookup_const_iterator Ivar, IvarEnd;
  for (llvm::tie(Ivar, IvarEnd) = lookup(Id); Ivar != IvarEnd; ++Ivar) {
    if (ObjCIvarDecl *ivar = dyn_cast<ObjCIvarDecl>(*Ivar))
      return ivar;
  }
  return 0;
}

// Get the local instance/class method declared in this interface.
ObjCMethodDecl *
ObjCContainerDecl::getMethod(Selector Sel, bool isInstance) const {
  // Since instance & class methods can have the same name, the loop below
  // ensures we get the correct method.
  //
  // @interface Whatever
  // - (int) class_method;
  // + (float) class_method;
  // @end
  //
  lookup_const_iterator Meth, MethEnd;
  for (llvm::tie(Meth, MethEnd) =