summaryrefslogtreecommitdiffstats
path: root/js/src/builtin/Reflect.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/builtin/Reflect.cpp')
-rw-r--r--js/src/builtin/Reflect.cpp288
1 files changed, 288 insertions, 0 deletions
diff --git a/js/src/builtin/Reflect.cpp b/js/src/builtin/Reflect.cpp
new file mode 100644
index 000000000..2f509a226
--- /dev/null
+++ b/js/src/builtin/Reflect.cpp
@@ -0,0 +1,288 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "builtin/Reflect.h"
+
+#include "jsarray.h"
+#include "jscntxt.h"
+
+#include "vm/ArgumentsObject.h"
+#include "vm/Stack.h"
+
+#include "vm/Interpreter-inl.h"
+
+using namespace js;
+
+
+/*** Reflect methods *****************************************************************************/
+
+/* ES6 26.1.3 Reflect.defineProperty(target, propertyKey, attributes) */
+static bool
+Reflect_defineProperty(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject obj(cx, NonNullObject(cx, args.get(0)));
+ if (!obj)
+ return false;
+
+ // Steps 2-3.
+ RootedValue propertyKey(cx, args.get(1));
+ RootedId key(cx);
+ if (!ToPropertyKey(cx, propertyKey, &key))
+ return false;
+
+ // Steps 4-5.
+ Rooted<PropertyDescriptor> desc(cx);
+ if (!ToPropertyDescriptor(cx, args.get(2), true, &desc))
+ return false;
+
+ // Step 6.
+ ObjectOpResult result;
+ if (!DefineProperty(cx, obj, key, desc, result))
+ return false;
+ args.rval().setBoolean(bool(result));
+ return true;
+}
+
+/* ES6 26.1.4 Reflect.deleteProperty (target, propertyKey) */
+static bool
+Reflect_deleteProperty(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject target(cx, NonNullObject(cx, args.get(0)));
+ if (!target)
+ return false;
+
+ // Steps 2-3.
+ RootedValue propertyKey(cx, args.get(1));
+ RootedId key(cx);
+ if (!ToPropertyKey(cx, propertyKey, &key))
+ return false;
+
+ // Step 4.
+ ObjectOpResult result;
+ if (!DeleteProperty(cx, target, key, result))
+ return false;
+ args.rval().setBoolean(bool(result));
+ return true;
+}
+
+/* ES6 26.1.6 Reflect.get(target, propertyKey [, receiver]) */
+static bool
+Reflect_get(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject obj(cx, NonNullObject(cx, args.get(0)));
+ if (!obj)
+ return false;
+
+ // Steps 2-3.
+ RootedValue propertyKey(cx, args.get(1));
+ RootedId key(cx);
+ if (!ToPropertyKey(cx, propertyKey, &key))
+ return false;
+
+ // Step 4.
+ RootedValue receiver(cx, args.length() > 2 ? args[2] : args.get(0));
+
+ // Step 5.
+ return GetProperty(cx, obj, receiver, key, args.rval());
+}
+
+/* ES6 26.1.7 Reflect.getOwnPropertyDescriptor(target, propertyKey) */
+static bool
+Reflect_getOwnPropertyDescriptor(JSContext* cx, unsigned argc, Value* vp)
+{
+ // Step 1.
+ CallArgs args = CallArgsFromVp(argc, vp);
+ if (!NonNullObject(cx, args.get(0)))
+ return false;
+
+ // The other steps are identical to ES6 draft rev 32 (2015 Feb 2) 19.1.2.6
+ // Object.getOwnPropertyDescriptor.
+ return js::obj_getOwnPropertyDescriptor(cx, argc, vp);
+}
+
+/* ES6 26.1.8 Reflect.getPrototypeOf(target) */
+bool
+js::Reflect_getPrototypeOf(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject target(cx, NonNullObject(cx, args.get(0)));
+ if (!target)
+ return false;
+
+ // Step 2.
+ RootedObject proto(cx);
+ if (!GetPrototype(cx, target, &proto))
+ return false;
+ args.rval().setObjectOrNull(proto);
+ return true;
+}
+
+/* ES6 draft 26.1.10 Reflect.isExtensible(target) */
+bool
+js::Reflect_isExtensible(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject target(cx, NonNullObject(cx, args.get(0)));
+ if (!target)
+ return false;
+
+ // Step 2.
+ bool extensible;
+ if (!IsExtensible(cx, target, &extensible))
+ return false;
+ args.rval().setBoolean(extensible);
+ return true;
+}
+
+/* ES6 26.1.11 Reflect.ownKeys(target) */
+static bool
+Reflect_ownKeys(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ if (!NonNullObject(cx, args.get(0)))
+ return false;
+
+ // Steps 2-4.
+ return GetOwnPropertyKeys(cx, args, JSITER_OWNONLY | JSITER_HIDDEN | JSITER_SYMBOLS);
+}
+
+/* ES6 26.1.12 Reflect.preventExtensions(target) */
+static bool
+Reflect_preventExtensions(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject target(cx, NonNullObject(cx, args.get(0)));
+ if (!target)
+ return false;
+
+ // Step 2.
+ ObjectOpResult result;
+ if (!PreventExtensions(cx, target, result))
+ return false;
+ args.rval().setBoolean(bool(result));
+ return true;
+}
+
+/* ES6 26.1.13 Reflect.set(target, propertyKey, V [, receiver]) */
+static bool
+Reflect_set(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject target(cx, NonNullObject(cx, args.get(0)));
+ if (!target)
+ return false;
+
+ // Steps 2-3.
+ RootedValue propertyKey(cx, args.get(1));
+ RootedId key(cx);
+ if (!ToPropertyKey(cx, propertyKey, &key))
+ return false;
+
+ // Step 4.
+ RootedValue receiver(cx, args.length() > 3 ? args[3] : args.get(0));
+
+ // Step 5.
+ ObjectOpResult result;
+ RootedValue value(cx, args.get(2));
+ if (!SetProperty(cx, target, key, value, receiver, result))
+ return false;
+ args.rval().setBoolean(bool(result));
+ return true;
+}
+
+/*
+ * ES6 26.1.3 Reflect.setPrototypeOf(target, proto)
+ *
+ * The specification is not quite similar enough to Object.setPrototypeOf to
+ * share code.
+ */
+static bool
+Reflect_setPrototypeOf(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+
+ // Step 1.
+ RootedObject obj(cx, NonNullObject(cx, args.get(0)));
+ if (!obj)
+ return false;
+
+ // Step 2.
+ if (!args.get(1).isObjectOrNull()) {
+ JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_NOT_EXPECTED_TYPE,
+ "Reflect.setPrototypeOf", "an object or null",
+ InformalValueTypeName(args.get(1)));
+ return false;
+ }
+ RootedObject proto(cx, args.get(1).toObjectOrNull());
+
+ // Step 4.
+ ObjectOpResult result;
+ if (!SetPrototype(cx, obj, proto, result))
+ return false;
+ args.rval().setBoolean(bool(result));
+ return true;
+}
+
+static const JSFunctionSpec methods[] = {
+ JS_SELF_HOSTED_FN("apply", "Reflect_apply", 3, 0),
+ JS_SELF_HOSTED_FN("construct", "Reflect_construct", 2, 0),
+ JS_FN("defineProperty", Reflect_defineProperty, 3, 0),
+ JS_FN("deleteProperty", Reflect_deleteProperty, 2, 0),
+ JS_FN("get", Reflect_get, 2, 0),
+ JS_FN("getOwnPropertyDescriptor", Reflect_getOwnPropertyDescriptor, 2, 0),
+ JS_FN("getPrototypeOf", Reflect_getPrototypeOf, 1, 0),
+ JS_SELF_HOSTED_FN("has", "Reflect_has", 2, 0),
+ JS_FN("isExtensible", Reflect_isExtensible, 1, 0),
+ JS_FN("ownKeys", Reflect_ownKeys, 1, 0),
+ JS_FN("preventExtensions", Reflect_preventExtensions, 1, 0),
+ JS_FN("set", Reflect_set, 3, 0),
+ JS_FN("setPrototypeOf", Reflect_setPrototypeOf, 2, 0),
+ JS_FS_END
+};
+
+
+/*** Setup **************************************************************************************/
+
+JSObject*
+js::InitReflect(JSContext* cx, HandleObject obj)
+{
+ RootedObject proto(cx, obj->as<GlobalObject>().getOrCreateObjectPrototype(cx));
+ if (!proto)
+ return nullptr;
+
+ RootedObject reflect(cx, NewObjectWithGivenProto<PlainObject>(cx, proto, SingletonObject));
+ if (!reflect)
+ return nullptr;
+ if (!JS_DefineFunctions(cx, reflect, methods))
+ return nullptr;
+
+ RootedValue value(cx, ObjectValue(*reflect));
+ if (!DefineProperty(cx, obj, cx->names().Reflect, value, nullptr, nullptr, JSPROP_RESOLVING))
+ return nullptr;
+
+ obj->as<GlobalObject>().setConstructor(JSProto_Reflect, value);
+
+ return reflect;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 01:55:49 +0000