dfg/DFGObjectMaterializationData.cpp

   1 /*
   2  * Copyright (C) 2014 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "DFGObjectMaterializationData.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include <wtf/ListDump.h>
  32
  33 namespace JSC { namespace DFG {
  34
  35 void PhantomPropertyValue::dump(PrintStream& out) const
  36 {
  37     out.print("id", m_identifierNumber);
  38 }
  39
  40 void ObjectMaterializationData::dump(PrintStream& out) const
  41 {
  42     out.print("[", listDump(m_properties), "]");
  43 }
  44
  45 float ObjectMaterializationData::oneWaySimilarityScore(
  46     const ObjectMaterializationData& other) const
  47 {
  48     unsigned numHits = 0;
  49     for (PhantomPropertyValue value : m_properties) {
  50         if (other.m_properties.contains(value))
  51             numHits++;
  52     }
  53     return static_cast<float>(numHits) / static_cast<float>(m_properties.size());
  54 }
  55
  56 float ObjectMaterializationData::similarityScore(const ObjectMaterializationData& other) const
  57 {
  58     return std::min(oneWaySimilarityScore(other), other.oneWaySimilarityScore(*this));
  59 }
  60
  61 } } // namespace JSC::DFG
  62
  63 #endif // ENABLE(DFG_JIT)