RegExpMatchesArray.cpp [plain text]
#include "config.h"
#include "RegExpMatchesArray.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(RegExpMatchesArray);
const ClassInfo RegExpMatchesArray::s_info = {"Array", &JSArray::s_info, 0, 0, CREATE_METHOD_TABLE(RegExpMatchesArray)};
void RegExpMatchesArray::finishCreation(JSGlobalData& globalData)
{
Base::finishCreation(globalData, m_regExp->numSubpatterns() + 1);
}
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), false);
else
putDirectIndex(exec, i, jsUndefined(), false);
}
}
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), false);
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);
}
}