Function gjs_js_define_system_stuff

modules/system.cpp:289–326

}

bool gjs_js_define_system_stuff(JSContext* cx, JS::MutableHandleObject module) {
    module.set(JS_NewPlainObject(cx));

    if (!JS_DefineFunctions(cx, module, &module_funcs[0]))
        return false;

    GjsContextPrivate* gjs = GjsContextPrivate::from_cx(cx);
    const char* program_name = gjs->program_name();
    const char* program_path = gjs->program_path();

    JS::RootedValue v_program_invocation_name{cx};
    JS::RootedValue v_program_path{cx, JS::NullValue()};
    if (program_path) {
        if (!gjs_string_from_utf8(cx, program_path, &v_program_path))
            return false;
    }

    JS::RootedObject program_args_getter{
        cx, JS_GetFunctionObject(js::NewFunctionByIdWithReserved(
                cx, get_program_args, 0, 0, gjs->atoms().program_args()))};

    return program_args_getter &&
           gjs_string_from_utf8(cx, program_name, &v_program_invocation_name) &&
           // The name is modeled after program_invocation_name, part of glibc
           JS_DefinePropertyById(cx, module,
                                 gjs->atoms().program_invocation_name(),
                                 v_program_invocation_name,
                                 GJS_MODULE_PROP_FLAGS | JSPROP_READONLY) &&
           JS_DefinePropertyById(cx, module, gjs->atoms().program_path(),
                                 v_program_path,
                                 GJS_MODULE_PROP_FLAGS | JSPROP_READONLY) &&
           JS_DefinePropertyById(cx, module, gjs->atoms().program_args(),
                                 program_args_getter, nullptr,
                                 GJS_MODULE_PROP_FLAGS) &&
           JS_DefinePropertyById(cx, module, gjs->atoms().version(),
                                 GJS_VERSION,
                                 GJS_MODULE_PROP_FLAGS | JSPROP_READONLY);
}