1894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman//===-- StringPool.cpp - Interned string pool -----------------------------===// 2894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 3894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// The LLVM Compiler Infrastructure 4894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 5894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// This file is distributed under the University of Illinois Open Source 6894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// License. See LICENSE.TXT for details. 7894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 8894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman//===----------------------------------------------------------------------===// 9894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 10894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// This file implements the StringPool class. 11894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 12894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman//===----------------------------------------------------------------------===// 13894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 14894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/Support/StringPool.h" 15894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/ADT/StringRef.h" 16894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 17894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanusing namespace llvm; 18894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 19894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanStringPool::StringPool() {} 20894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 21894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanStringPool::~StringPool() { 22894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman assert(InternTable.empty() && "PooledStringPtr leaked!"); 23894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 24894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 25894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPooledStringPtr StringPool::intern(StringRef Key) { 26894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman table_t::iterator I = InternTable.find(Key); 27894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I != InternTable.end()) 28894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return PooledStringPtr(&*I); 29894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 30894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman entry_t *S = entry_t::Create(Key.begin(), Key.end()); 31894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman S->getValue().Pool = this; 32894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman InternTable.insert(S); 33894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 34894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return PooledStringPtr(S); 35894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 36