/* * Copyright (C) 2018 Yusuke Suzuki <utatane.tea@gmail.com>. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include "InByIdVariant.h" #include "JSCInlines.h" #include <wtf/ListDump.h> namespace JSC { InByIdVariant::InByIdVariant(const StructureSet& structureSet, PropertyOffset offset, const ObjectPropertyConditionSet& conditionSet) : m_structureSet(structureSet) , m_conditionSet(conditionSet) , m_offset(offset) { if (!structureSet.size()) { ASSERT(offset == invalidOffset); ASSERT(conditionSet.isEmpty()); } } bool InByIdVariant::attemptToMerge(const InByIdVariant& other) { if (m_offset != other.m_offset) return false; if (m_conditionSet.isEmpty() != other.m_conditionSet.isEmpty()) return false; ObjectPropertyConditionSet mergedConditionSet; if (!m_conditionSet.isEmpty()) { mergedConditionSet = m_conditionSet.mergedWith(other.m_conditionSet); if (!mergedConditionSet.isValid() || !mergedConditionSet.hasOneSlotBaseCondition()) return false; } m_conditionSet = mergedConditionSet; m_structureSet.merge(other.m_structureSet); return true; } void InByIdVariant::dump(PrintStream& out) const { dumpInContext(out, 0); } void InByIdVariant::dumpInContext(PrintStream& out, DumpContext* context) const { if (!isSet()) { out.print("<empty>"); return; } out.print( "<", inContext(structureSet(), context), ", ", inContext(m_conditionSet, context)); out.print(", offset = ", offset()); out.print(">"); } } // namespace JSC