Exemplo n.º 1
0
void JSRopeString::resolveRopeToAtomicString(ExecState* exec) const
{
    if (length() > maxLengthForOnStackResolve) {
        resolveRope(exec);
        m_value = AtomicString(m_value);
        setIs8Bit(m_value.impl()->is8Bit());
        return;
    }

    if (is8Bit()) {
        LChar buffer[maxLengthForOnStackResolve];
        resolveRopeInternal8(buffer);
        m_value = AtomicString(buffer, length());
        setIs8Bit(m_value.impl()->is8Bit());
    } else {
        UChar buffer[maxLengthForOnStackResolve];
        resolveRopeInternal16(buffer);
        m_value = AtomicString(buffer, length());
        setIs8Bit(m_value.impl()->is8Bit());
    }

    clearFibers();

    // If we resolved a string that didn't previously exist, notify the heap that we've grown.
    if (m_value.impl()->hasOneRef())
        Heap::heap(this)->reportExtraMemoryAllocated(m_value.impl()->cost());
}
Exemplo n.º 2
0
RefPtr<AtomicStringImpl> JSRopeString::resolveRopeToExistingAtomicString(ExecState* exec) const
{
    if (length() > maxLengthForOnStackResolve) {
        resolveRope(exec);
        if (RefPtr<AtomicStringImpl> existingAtomicString = AtomicStringImpl::lookUp(m_value.impl())) {
            m_value = *existingAtomicString;
            setIs8Bit(m_value.impl()->is8Bit());
            clearFibers();
            return existingAtomicString;
        }
        return nullptr;
    }
    
    if (is8Bit()) {
        LChar buffer[maxLengthForOnStackResolve];
        resolveRopeInternal8(buffer);
        if (RefPtr<AtomicStringImpl> existingAtomicString = AtomicStringImpl::lookUp(buffer, length())) {
            m_value = *existingAtomicString;
            setIs8Bit(m_value.impl()->is8Bit());
            clearFibers();
            return existingAtomicString;
        }
    } else {
        UChar buffer[maxLengthForOnStackResolve];
        resolveRopeInternal16(buffer);
        if (RefPtr<AtomicStringImpl> existingAtomicString = AtomicStringImpl::lookUp(buffer, length())) {
            m_value = *existingAtomicString;
            setIs8Bit(m_value.impl()->is8Bit());
            clearFibers();
            return existingAtomicString;
        }
    }

    return nullptr;
}
Exemplo n.º 3
0
void JSRopeString::resolveRope(ExecState* exec) const
{
    ASSERT(isRope());

    if (is8Bit()) {
        LChar* buffer;
        if (RefPtr<StringImpl> newImpl = StringImpl::tryCreateUninitialized(m_length, buffer)) {
            Heap::heap(this)->reportExtraMemoryCost(newImpl->cost());
            m_value = newImpl.release();
        } else {
            outOfMemory(exec);
            return;
        }
        resolveRopeInternal8(buffer);
        clearFibers();
        ASSERT(!isRope());
        return;
    }

    UChar* buffer;
    if (RefPtr<StringImpl> newImpl = StringImpl::tryCreateUninitialized(m_length, buffer)) {
        Heap::heap(this)->reportExtraMemoryCost(newImpl->cost());
        m_value = newImpl.release();
    } else {
        outOfMemory(exec);
        return;
    }

    resolveRopeInternal16(buffer);
    clearFibers();
    ASSERT(!isRope());
}