Examples with NativeConstructor com.github.anba.es6draft.runtime.types.builtins.NativeConstructor used on opensource projects

Example 1 with NativeConstructor

use of com.github.anba.es6draft.runtime.types.builtins.NativeConstructor in project es6draft by anba.

the class Properties method createConstructor.

private static OrdinaryObject createConstructor(ExecutionContext cx, String className, OrdinaryObject proto, Converter converter, ObjectLayout layout) {
    Entry<Function, MethodHandle> constructorEntry = findConstructor(layout);
    if (constructorEntry != null) {
        // User supplied method, perform manual ClassDefinitionEvaluation for constructors
        Function function = constructorEntry.getKey();
        MethodHandle unreflect = constructorEntry.getValue();
        MethodHandle callMethod = getStaticMethodHandle(converter, unreflect, MethodKind.Call);
        MethodHandle constructMethod = getStaticMethodHandle(converter, unreflect, MethodKind.Construct);
        NativeConstructor constructor = new NativeConstructor(cx.getRealm(), className, function.arity(), callMethod, constructMethod);
        constructor.defineOwnProperty(cx, "prototype", new PropertyDescriptor(proto, false, false, false));
        proto.defineOwnProperty(cx, "constructor", new PropertyDescriptor(constructor, true, false, true));
        return constructor;
    }
    // Create default constructor
    String sourceText = String.format("(class %s { })", sanitizeName(className));
    Object constructor = ScriptLoading.eval(cx.getRealm(), "<Constructor>", sourceText);
    assert constructor instanceof OrdinaryConstructorFunction : constructor.getClass();
    return (OrdinaryConstructorFunction) constructor;
}