1 //===--- StringSet.h - The LLVM Compiler Driver -----------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open 6 // Source License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // StringSet - A set-like wrapper for the StringMap. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_ADT_STRINGSET_H 15 #define LLVM_ADT_STRINGSET_H 16 17 #include "llvm/ADT/StringMap.h" 18 19 namespace llvm { 20 21 /// StringSet - A wrapper for StringMap that provides set-like functionality. 22 template <class AllocatorTy = llvm::MallocAllocator> 23 class StringSet : public llvm::StringMap<char, AllocatorTy> { 24 typedef llvm::StringMap<char, AllocatorTy> base; 25 public: 26 insert(StringRef Key)27 std::pair<typename base::iterator, bool> insert(StringRef Key) { 28 assert(!Key.empty()); 29 return base::insert(std::make_pair(Key, '\0')); 30 } 31 }; 32 } 33 34 #endif // LLVM_ADT_STRINGSET_H 35