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 javaemul.internal.HashCodes;
/**
* 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 {
/**
* Holds class literal for subtypes of Object.
*/
// CHECKSTYLE_OFF
private transient Class ___clazz;
// CHECKSTYLE_ON
/**
* 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;
/**
* A special marker field used internally to the GWT compiler. For example, it
* is used for distinguishing whether an object is a Java object or a
* JavaScriptObject. It is also used to differentiate our own Java objects
* from foreign objects in a different module on the same page.
*
* @see com.google.gwt.lang.Cast
*
* @skip
*/
@SuppressWarnings("unused")
private transient JavaScriptObject typeMarker;
public boolean equals(Object other) {
return this == other;
}
// TODO(rluble): declare as final
public Class getClass() {
return ___clazz;
}
public int hashCode() {
return HashCodes.getObjectIdentityHashCode(this);
}
public String toString() {
return toString(this);
}
private static String toString(Object object) {
return object.getClass().getName() + '@' + Integer.toHexString(object.hashCode());
}
/**
* Never called; here for JRE compatibility.
*
* @skip
*/
protected void finalize() throws Throwable {
}
}
// DO NOT REMOVE OR MODIFY THIS magic COMMENT. It is checked by the build system to ensure we
// are compiling GWT JRE.