1//===-- StringPool.cpp - Interned string pool -----------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file implements the StringPool class. 11// 12//===----------------------------------------------------------------------===// 13 14#include "llvm/Support/StringPool.h" 15#include "llvm/ADT/StringRef.h" 16 17using namespace llvm; 18 19StringPool::StringPool() {} 20 21StringPool::~StringPool() { 22 assert(InternTable.empty() && "PooledStringPtr leaked!"); 23} 24 25PooledStringPtr StringPool::intern(StringRef Key) { 26 table_t::iterator I = InternTable.find(Key); 27 if (I != InternTable.end()) 28 return PooledStringPtr(&*I); 29 30 entry_t *S = entry_t::Create(Key); 31 S->getValue().Pool = this; 32 InternTable.insert(S); 33 34 return PooledStringPtr(S); 35} 36