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a17e361b99
Summary: Re-land r362766 after it was reverted in r362823. Reviewers: jhenderson, dsanders, aaron.ballman, MatzeB, lhames, dblaikie Reviewed By: dblaikie Subscribers: smeenai, mgrang, mgorny, dexonsmith, kristina, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D62369 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@362835 91177308-0d34-0410-b5e6-96231b3b80d8
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
//===- StringSet.h - The LLVM Compiler Driver -------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// StringSet - A set-like wrapper for the StringMap.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ADT_STRINGSET_H
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#define LLVM_ADT_STRINGSET_H
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Allocator.h"
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#include <cassert>
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#include <initializer_list>
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#include <utility>
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namespace llvm {
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/// StringSet - A wrapper for StringMap that provides set-like functionality.
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template <class AllocatorTy = MallocAllocator>
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class StringSet : public StringMap<char, AllocatorTy> {
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using base = StringMap<char, AllocatorTy>;
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public:
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StringSet() = default;
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StringSet(std::initializer_list<StringRef> S) {
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for (StringRef X : S)
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insert(X);
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}
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explicit StringSet(AllocatorTy A) : base(A) {}
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std::pair<typename base::iterator, bool> insert(StringRef Key) {
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assert(!Key.empty());
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return base::insert(std::make_pair(Key, '\0'));
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}
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template <typename InputIt>
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void insert(const InputIt &Begin, const InputIt &End) {
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for (auto It = Begin; It != End; ++It)
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base::insert(std::make_pair(*It, '\0'));
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}
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template <typename ValueTy>
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std::pair<typename base::iterator, bool>
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insert(const StringMapEntry<ValueTy> &MapEntry) {
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return insert(MapEntry.getKey());
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}
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};
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} // end namespace llvm
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#endif // LLVM_ADT_STRINGSET_H
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