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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* 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 "RegExpMatchesArray.h"
#include "ButterflyInlineMethods.h"
namespace JSC {
const ClassInfo RegExpMatchesArray::s_info = {"Array", &JSArray::s_info, 0, 0, CREATE_METHOD_TABLE(RegExpMatchesArray)};
RegExpMatchesArray::RegExpMatchesArray(JSGlobalData& globalData, Butterfly* butterfly, JSGlobalObject* globalObject, JSString* input, RegExp* regExp, MatchResult result)
: JSArray(globalData, globalObject->regExpMatchesArrayStructure(), butterfly)
, m_result(result)
, m_state(ReifiedNone)
{
m_input.set(globalData, this, input);
m_regExp.set(globalData, this, regExp);
}
RegExpMatchesArray* RegExpMatchesArray::create(ExecState* exec, JSString* input, RegExp* regExp, MatchResult result)
{
ASSERT(result);
JSGlobalData& globalData = exec->globalData();
Butterfly* butterfly = createArrayButterfly(globalData, regExp->numSubpatterns() + 1);
RegExpMatchesArray* array = new (NotNull, allocateCell<RegExpMatchesArray>(globalData.heap)) RegExpMatchesArray(globalData, butterfly, exec->lexicalGlobalObject(), input, regExp, result);
array->finishCreation(globalData);
return array;
}
void RegExpMatchesArray::finishCreation(JSGlobalData& globalData)
{
Base::finishCreation(globalData);
}
void RegExpMatchesArray::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
RegExpMatchesArray* thisObject = jsCast<RegExpMatchesArray*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
Base::visitChildren(thisObject, visitor);
visitor.append(&thisObject->m_input);
visitor.append(&thisObject->m_regExp);
}
void RegExpMatchesArray::reifyAllProperties(ExecState* exec)
{
ASSERT(m_state != ReifiedAll);
ASSERT(m_result);
reifyMatchPropertyIfNecessary(exec);
if (unsigned numSubpatterns = m_regExp->numSubpatterns()) {
Vector<int, 32> subpatternResults;
int position = m_regExp->match(exec->globalData(), m_input->value(exec), m_result.start, subpatternResults);
ASSERT_UNUSED(position, position >= 0 && static_cast<size_t>(position) == m_result.start);
ASSERT(m_result.start == static_cast<size_t>(subpatternResults[0]));
ASSERT(m_result.end == static_cast<size_t>(subpatternResults[1]));
for (unsigned i = 1; i <= numSubpatterns; ++i) {
int start = subpatternResults[2 * i];
if (start >= 0)
putDirectIndex(exec, i, jsSubstring(exec, m_input.get(), start, subpatternResults[2 * i + 1] - start));
else
putDirectIndex(exec, i, jsUndefined());
}
}
PutPropertySlot slot;
JSArray::put(this, exec, exec->propertyNames().index, jsNumber(m_result.start), slot);
JSArray::put(this, exec, exec->propertyNames().input, m_input.get(), slot);
m_state = ReifiedAll;
}
void RegExpMatchesArray::reifyMatchProperty(ExecState* exec)
{
ASSERT(m_state == ReifiedNone);
ASSERT(m_result);
putDirectIndex(exec, 0, jsSubstring(exec, m_input.get(), m_result.start, m_result.end - m_result.start));
m_state = ReifiedMatch;
}
JSString* RegExpMatchesArray::leftContext(ExecState* exec)
{
if (!m_result.start)
return jsEmptyString(exec);
return jsSubstring(exec, m_input.get(), 0, m_result.start);
}
JSString* RegExpMatchesArray::rightContext(ExecState* exec)
{
unsigned length = m_input->length();
if (m_result.end == length)
return jsEmptyString(exec);
return jsSubstring(exec, m_input.get(), m_result.end, length - m_result.end);
}
} // namespace JSC
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