Function gjs_array_from_basic_c_array_internal

gi/arg.cpp:2361–2475

}

GJS_JSAPI_RETURN_CONVENTION
static bool gjs_array_from_basic_c_array_internal(
    JSContext* cx, JS::MutableHandleValue value_out, GITypeTag element_tag,
    size_t length, void* contents) {
    g_assert(GI_TYPE_TAG_IS_BASIC(element_tag));

    // Special case array(uint8)
    if (element_tag == GI_TYPE_TAG_UINT8) {
        JSObject* u8array = gjs_byte_array_from_data_copy(cx, length, contents);
        if (!u8array)
            return false;
        value_out.setObject(*u8array);
        return true;
    }

    // Special case array(unichar) to be a string in JS
    if (element_tag == GI_TYPE_TAG_UNICHAR) {
        return gjs_string_from_ucs4(cx, static_cast<gunichar*>(contents),
                                    length, value_out);
    }

    // a null array pointer takes precedence over whatever `length` says
    if (!contents) {
        JSObject* array = JS::NewArrayObject(cx, 0);
        if (!array)
            return false;
        value_out.setObject(*array);
        return true;
    }

    JS::RootedValueVector elems{cx};
    if (!elems.resize(length)) {
        JS_ReportOutOfMemory(cx);
        return false;
    }

    GIArgument arg;
    switch (element_tag) {
        // Special cases handled above
        case GI_TYPE_TAG_UINT8:
        case GI_TYPE_TAG_UNICHAR:
            g_assert_not_reached();

        case GI_TYPE_TAG_BOOLEAN:
            if (!fill_vector_from_basic_c_array<Gjs::Tag::GBoolean>(
                    cx, &elems, element_tag, &arg, contents, length))
                return false;
            break;
        case GI_TYPE_TAG_INT8:
            if (!fill_vector_from_basic_c_array<int8_t>(cx, &elems, element_tag,
                                                        &arg, contents, length))
                return false;
            break;
        case GI_TYPE_TAG_UINT16:
            if (!fill_vector_from_basic_c_array<uint16_t>(
                    cx, &elems, element_tag, &arg, contents, length))
                return false;
            break;