com.google.gwt.emul.java.lang.Object Maven / Gradle / Ivy
/*
* Copyright 2008 Google Inc.
*
* 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 java.lang;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.impl.Impl;
/**
* The superclass of all other types. The GWT emulation library supports a
* limited subset of methods on Object
due to browser
* limitations. The methods documented here are the only ones available.
*/
public class Object {
/**
* Used by {@link com.google.gwt.core.client.impl.WeakMapping} in web mode
* to store an expando containing a String -> Object mapping.
*
* @skip
*/
@SuppressWarnings("unused")
private transient JavaScriptObject expando;
/**
* A JavaScript Json map for looking up castability between types.
*
* @skip
*/
@SuppressWarnings("unused")
private transient JavaScriptObject castableTypeMap;
/**
* magic magic magic.
*
* @skip
*/
@SuppressWarnings("unused")
private transient JavaScriptObject typeMarker;
public boolean equals(Object other) {
return this == other;
}
/*
* Magic; unlike the real JRE, we don't spec this method as final. The
* compiler will generate a polymorphic override on every other class which
* will return the correct class object.
*
* TODO(scottb): declare this final, but have the compiler fix it up.
*/
public Class extends Object> getClass() {
return Object.class;
}
public int hashCode() {
return Impl.getHashCode(this);
}
public String toString() {
return getClass().getName() + '@' + Integer.toHexString(hashCode());
}
/**
* Never called; here for compatibility.
*
* @skip
*/
protected void finalize() throws Throwable {
}
}