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 17 using namespace llvm; 18 19 StringPool::StringPool() {} 20 21 StringPool::~StringPool() { 22 assert(InternTable.empty() && "PooledStringPtr leaked!"); 23 } 24 25 PooledStringPtr 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.begin(), Key.end()); 31 S->getValue().Pool = this; 32 InternTable.insert(S); 33 34 return PooledStringPtr(S); 35 } 36
