Function gjs_module_resolve

gjs/module.cpp:542–576

* gjs_module_resolve: * @cx: the current JSContext * @importing_module_priv: the private JS Object of the #Module object * initiating the import, or a JS null value * @module_request: the module request object * * This function resolves import specifiers. It is called internally by * SpiderMonkey as a hook. * * Returns: whether an error occurred while resolving the specifier. */

 * Returns: whether an error occurred while resolving the specifier.
 */
JSObject* gjs_module_resolve(JSContext* cx,
                             JS::HandleValue importing_module_priv,
                             JS::HandleObject module_request) {
    g_assert((gjs_global_is_type(cx, GjsGlobalType::DEFAULT) ||
              gjs_global_is_type(cx, GjsGlobalType::INTERNAL)) &&
             "gjs_module_resolve can only be called from module-enabled "
             "globals.");
    JS::RootedString specifier(
        cx, JS::GetModuleRequestSpecifier(cx, module_request));

    JS::RootedObject global(cx, JS::CurrentGlobalOrNull(cx));
    JS::RootedValue v_loader(
        cx, gjs_get_global_slot(global, GjsGlobalSlot::MODULE_LOADER));
    g_assert(v_loader.isObject());
    JS::RootedObject loader(cx, &v_loader.toObject());

    if (!canonicalize_specifier(cx, &specifier))
        return nullptr;

    JS::RootedValueArray<2> args(cx);
    args[0].set(importing_module_priv);
    args[1].setString(specifier);

    gjs_debug(GJS_DEBUG_IMPORTER,
              "Module resolve hook for module %s (relative to %s), global %p",
              gjs_debug_string(specifier).c_str(),
              gjs_debug_value(importing_module_priv).c_str(), global.get());

    JS::RootedValue result(cx);
    if (!JS::Call(cx, loader, "moduleResolveHook", args, &result))
        return nullptr;

    g_assert(result.isObject() && "resolve hook failed to return an object!");
    return &result.toObject();
}

// Call JS::FinishDynamicModuleImport() with the values stashed in the function.
// Can fail in JS::FinishDynamicModuleImport(), but will assert if anything