JSValue JSHTMLAllCollection::item(ExecState* exec)
{
    uint32_t index = toUInt32FromStringImpl(exec->argument(0).toString(exec)->value(exec).impl());
    if (index != PropertyName::NotAnIndex)
        return toJS(exec, globalObject(), impl().item(index));
    return namedItems(exec, this, Identifier(exec, exec->argument(0).toString(exec)->value(exec)));
}
// HTMLAllCollections are strange objects, they support both get and call.
static EncodedJSValue JSC_HOST_CALL callHTMLAllCollection(ExecState* exec)
{
    if (exec->argumentCount() < 1)
        return JSValue::encode(jsUndefined());

    // Do not use thisObj here. It can be the JSHTMLDocument, in the document.forms(i) case.
    JSHTMLAllCollection* jsCollection = jsCast<JSHTMLAllCollection*>(exec->callee());
    HTMLAllCollection& collection = jsCollection->impl();

    // Also, do we need the TypeError test here ?

    if (exec->argumentCount() == 1) {
        // Support for document.all(<index>) etc.
        String string = exec->argument(0).toString(exec)->value(exec);
        if (Optional<uint32_t> index = parseIndex(*string.impl()))
            return JSValue::encode(toJS(exec, jsCollection->globalObject(), collection.item(index.value())));

        // Support for document.images('<name>') etc.
        return JSValue::encode(namedItems(*exec, jsCollection, Identifier::fromString(exec, string)));
    }

    // The second arg, if set, is the index of the item we want
    String string = exec->argument(0).toString(exec)->value(exec);
    if (Optional<uint32_t> index = parseIndex(*exec->argument(1).toWTFString(exec).impl())) {
        if (auto* item = collection.namedItemWithIndex(string, index.value()))
            return JSValue::encode(toJS(exec, jsCollection->globalObject(), item));
    }

    return JSValue::encode(jsUndefined());
}
bool JSHTMLAllCollection::nameGetter(ExecState* state, PropertyName propertyName, JSValue& value)
{
    JSValue items = namedItems(*state, this, propertyName);
    if (items.isUndefined())
        return false;

    value = items;
    return true;
}
Exemplo n.º 4
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JSValue JSHTMLAllCollection::item(ExecState& state)
{
    VM& vm = state.vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    if (UNLIKELY(state.argumentCount() < 1))
        return throwException(&state, scope, createNotEnoughArgumentsError(&state));

    String argument = state.uncheckedArgument(0).toWTFString(&state);
    if (Optional<uint32_t> index = parseIndex(*argument.impl()))
        return toJS(&state, globalObject(), wrapped().item(index.value()));
    return namedItems(state, this, Identifier::fromString(&state, argument));
}
JSValue JSHTMLAllCollection::namedItem(ExecState& state)
{
    JSValue value = namedItems(state, this, Identifier::fromString(&state, state.argument(0).toString(&state)->value(&state)));
    return value.isUndefined() ? jsNull() : value;
}
JSValue JSHTMLAllCollection::item(ExecState& state)
{
    if (Optional<uint32_t> index = parseIndex(*state.argument(0).toString(&state)->value(&state).impl()))
        return toJS(&state, globalObject(), impl().item(index.value()));
    return namedItems(state, this, Identifier::fromString(&state, state.argument(0).toString(&state)->value(&state)));
}
EncodedJSValue JSHTMLAllCollection::nameGetter(ExecState* exec, JSObject* slotBase, EncodedJSValue, PropertyName propertyName)
{
    JSHTMLAllCollection* thisObj = jsCast<JSHTMLAllCollection*>(slotBase);
    return JSValue::encode(namedItems(exec, thisObj, propertyName));
}
JSValue JSHTMLAllCollection::namedItem(ExecState* exec)
{
    JSValue value = namedItems(exec, this, Identifier(exec, exec->argument(0).toString(exec)->value(exec)));
    return value.isUndefined() ? jsNull() : value;
}