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

Example 26 with Callable

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

the class ProxyObject method setPrototypeOf.

/**
     * 9.5.2 [[SetPrototypeOf]] (V)
     */
@Override
public boolean setPrototypeOf(ExecutionContext cx, ScriptObject prototype) {
    /* step 1 (implicit) */
    /* steps 2-4 */
    ScriptObject handler = getProxyHandler(cx);
    /* step 5 */
    ScriptObject target = getProxyTarget();
    /* step 6 */
    Callable trap = GetMethod(cx, handler, "setPrototypeOf");
    /* step 7 */
    if (trap == null) {
        return target.setPrototypeOf(cx, prototype);
    }
    /* step 8 */
    Object prototypeValue = prototype != null ? prototype : NULL;
    boolean trapResult = ToBoolean(trap.call(cx, handler, target, prototypeValue));
    /* step 9 */
    if (!trapResult) {
        return false;
    }
    /* step 10 */
    boolean extensibleTarget = IsExtensible(cx, target);
    /* step 11 */
    if (extensibleTarget) {
        return true;
    }
    /* step 12 */
    ScriptObject targetProto = target.getPrototypeOf(cx);
    /* step 13 */
    if (prototype != targetProto) {
        throw newTypeError(cx, Messages.Key.ProxySamePrototype);
    }
    /* step 14 */
    return true;
}

Example 27 with Callable

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

the class ProxyObject method ownPropertyKeys.

/**
     * 9.5.12 [[OwnPropertyKeys]] ()
     */
@Override
public List<?> ownPropertyKeys(ExecutionContext cx) {
    /* steps 1-3 */
    ScriptObject handler = getProxyHandler(cx);
    /* step 4 */
    ScriptObject target = getProxyTarget();
    /* steps 5-6 */
    Callable trap = GetMethod(cx, handler, "ownKeys");
    /* step 7 */
    if (trap == null) {
        return target.ownPropertyKeys(cx);
    }
    /* step 8 */
    Object trapResultArray = trap.call(cx, handler, target);
    /* steps 9-25 */
    return validateOwnPropertyKeys(cx, target, trapResultArray);
}

Example 28 with Callable

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

the class ProxyObject method enumerateKeys.

/**
     * 9.5.11 [[Enumerate]] ()
     */
@Override
public ScriptIterator<?> enumerateKeys(ExecutionContext cx) {
    /* steps 1-3 */
    ScriptObject handler = getProxyHandler(cx);
    /* step 4 */
    ScriptObject target = getProxyTarget();
    /* steps 5-6 */
    Callable trap = GetMethod(cx, handler, "enumerate");
    /* step 7 */
    if (trap == null) {
        return target.enumerateKeys(cx);
    }
    /* steps 8-9 */
    Object trapResult = trap.call(cx, handler, target);
    /* step 10 */
    if (!Type.isObject(trapResult)) {
        throw newTypeError(cx, Messages.Key.ProxyNotObject);
    }
    /* step 11 */
    return ToScriptIterator(cx, Type.objectValue(trapResult));
}

Example 29 with Callable

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

the class ProxyObject method getOwnProperty.

/**
     * 9.5.5 [[GetOwnProperty]] (P)
     */
@Override
public Property getOwnProperty(ExecutionContext cx, String propertyKey) {
    /* step 1 (implicit) */
    /* steps 2-4 */
    ScriptObject handler = getProxyHandler(cx);
    /* step 5 */
    ScriptObject target = getProxyTarget();
    /* steps 6-7 */
    Callable trap = GetMethod(cx, handler, "getOwnPropertyDescriptor");
    /* step 8 */
    if (trap == null) {
        return target.getOwnProperty(cx, propertyKey);
    }
    /* steps 9-10 */
    Object trapResultObj = trap.call(cx, handler, target, propertyKey);
    /* step 11 */
    if (!(Type.isObject(trapResultObj) || Type.isUndefined(trapResultObj))) {
        throw newTypeError(cx, Messages.Key.ProxyNotObjectOrUndefined);
    }
    /* steps 12-13 */
    Property targetDesc = target.getOwnProperty(cx, propertyKey);
    /* steps 14-23 */
    return validateGetOwnProperty(cx, target, trapResultObj, targetDesc);
}

Example 30 with Callable

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

the class ProxyObject method hasProperty.

/**
     * 9.5.7 [[HasProperty]] (P)
     */
@Override
public boolean hasProperty(ExecutionContext cx, String propertyKey) {
    /* step 1 (implicit) */
    /* steps 2-4 */
    ScriptObject handler = getProxyHandler(cx);
    /* step 5 */
    ScriptObject target = getProxyTarget();
    /* steps 6-7 */
    Callable trap = GetMethod(cx, handler, "has");
    /* step 8 */
    if (trap == null) {
        return target.hasProperty(cx, propertyKey);
    }
    /* steps 9-10 */
    boolean trapResult = ToBoolean(trap.call(cx, handler, target, propertyKey));
    /* step 11 */
    if (!trapResult) {
        /* steps 11.a-11.b */
        Property targetDesc = target.getOwnProperty(cx, propertyKey);
        /* step 11.c */
        validateHasProperty(cx, target, targetDesc);
    }
    /* step 12 */
    return trapResult;
}