356 if (obj instanceof Iterable) {
357 return ((Iterable<?>)obj).iterator();
358 }
359
360 final Object wrapped = Global.instance().wrapAsObject(obj);
361 if (wrapped instanceof ScriptObject) {
362 return ((ScriptObject)wrapped).valueIterator();
363 }
364
365 return Collections.emptyIterator();
366 }
367
368 /**
369 * Merge a scope into its prototype's map.
370 * Merge a scope into its prototype.
371 *
372 * @param scope Scope to merge.
373 * @return prototype object after merge
374 */
375 public static ScriptObject mergeScope(final ScriptObject scope) {
376 final ScriptObject global = scope.getProto();
377 global.addBoundProperties(scope);
378 return global;
379 }
380
381 /**
382 * Call a function given self and args. If the number of the arguments is known in advance, you can likely achieve
383 * better performance by {@link Bootstrap#createDynamicInvoker(String, Class, Class...) creating a dynamic invoker}
384 * for operation {@code "dyn:call"}, then using its {@link MethodHandle#invokeExact(Object...)} method instead.
385 *
386 * @param target ScriptFunction object.
387 * @param self Receiver in call.
388 * @param args Call arguments.
389 * @return Call result.
390 */
391 public static Object apply(final ScriptFunction target, final Object self, final Object... args) {
392 try {
393 return target.invoke(self, args);
394 } catch (final RuntimeException | Error e) {
395 throw e;
396 } catch (final Throwable t) {
397 throw new RuntimeException(t);
398 }
|
356 if (obj instanceof Iterable) {
357 return ((Iterable<?>)obj).iterator();
358 }
359
360 final Object wrapped = Global.instance().wrapAsObject(obj);
361 if (wrapped instanceof ScriptObject) {
362 return ((ScriptObject)wrapped).valueIterator();
363 }
364
365 return Collections.emptyIterator();
366 }
367
368 /**
369 * Merge a scope into its prototype's map.
370 * Merge a scope into its prototype.
371 *
372 * @param scope Scope to merge.
373 * @return prototype object after merge
374 */
375 public static ScriptObject mergeScope(final ScriptObject scope) {
376 final ScriptObject proto = scope.getProto();
377 // Variable declarations go into the first parent scope that is not a with-statement
378 ScriptObject parentScope = proto;
379 while (parentScope instanceof WithObject) {
380 parentScope = parentScope.getProto();
381 }
382 parentScope.addBoundProperties(scope);
383 return proto;
384 }
385
386 /**
387 * Call a function given self and args. If the number of the arguments is known in advance, you can likely achieve
388 * better performance by {@link Bootstrap#createDynamicInvoker(String, Class, Class...) creating a dynamic invoker}
389 * for operation {@code "dyn:call"}, then using its {@link MethodHandle#invokeExact(Object...)} method instead.
390 *
391 * @param target ScriptFunction object.
392 * @param self Receiver in call.
393 * @param args Call arguments.
394 * @return Call result.
395 */
396 public static Object apply(final ScriptFunction target, final Object self, final Object... args) {
397 try {
398 return target.invoke(self, args);
399 } catch (final RuntimeException | Error e) {
400 throw e;
401 } catch (final Throwable t) {
402 throw new RuntimeException(t);
403 }
|