UnresolvedSet.h

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//===- UnresolvedSet.h - Unresolved sets of declarations --------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
//  This file defines the UnresolvedSet class, which is used to store
//  collections of declarations in the AST.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_AST_UNRESOLVEDSET_H
#define LLVM_CLANG_AST_UNRESOLVEDSET_H
 
#include "clang/AST/DeclAccessPair.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/Specifiers.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/iterator.h"
#include <cstddef>
#include <iterator>
 
namespace clang {
 
class NamedDecl;
 
/// The iterator over UnresolvedSets.  Serves as both the const and
/// non-const iterator.
class UnresolvedSetIterator : public llvm::iterator_adaptor_base<
                                  UnresolvedSetIterator, DeclAccessPair *,
                                  std::random_access_iterator_tag, NamedDecl *,
                                  std::ptrdiff_t, NamedDecl *, NamedDecl *> {
  friend class ASTUnresolvedSet;
  friend class OverloadExpr;
  friend class UnresolvedSetImpl;
 
  explicit UnresolvedSetIterator(DeclAccessPair *Iter)
      : iterator_adaptor_base(Iter) {}
  explicit UnresolvedSetIterator(const DeclAccessPair *Iter)
      : iterator_adaptor_base(const_cast<