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/*
* Copyright (C) 2008 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.collect.testing;
import java.lang.reflect.Method;
/**
* Methods factored out so that they can be emulated differently in GWT.
*
* <p>This class is emulated in GWT.
*
* @author Hayward Chan
*/
class Platform {
/**
* Calls {@link Class#isInstance(Object)}. Factored out so that it can be
* emulated in GWT.
*
* <p>This method always returns {@code true} in GWT.
*/
static boolean checkIsInstance(Class<?> clazz, Object obj) {
return clazz.isInstance(obj);
}
static <T> T[] clone(T[] array) {
return array.clone();
}
// Class.cast is not supported in GWT. This method is a no-op in GWT.
static void checkCast(Class<?> clazz, Object obj) {
clazz.cast(obj);
}
static String format(String template, Object... args) {
return String.format(template, args);
}
/**
* Wrapper around {@link System#arraycopy} so that it can be emulated
* correctly in GWT.
*
* <p>It is only intended for the case {@code src} and {@code dest} are
* different. It also doesn't validate the types and indices.
*
* <p>As of GWT 2.0, The built-in {@link System#arraycopy} doesn't work
* in general case. See
* http://code.google.com/p/google-web-toolkit/issues/detail?id=3621
* for more details.
*/
static void unsafeArrayCopy(
Object[] src, int srcPos, Object[] dest, int destPos, int length) {
System.arraycopy(src, srcPos, dest, destPos, length);
}
static Method getMethod(Class<?> clazz, String name) {
try {
return clazz.getMethod(name);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
static String classGetSimpleName(Class<?> clazz) {
return clazz.getSimpleName();
}
private Platform() {}
}
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