/*
* Copyright 2013 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 com.google.gwt.core.shared.impl;
import com.google.gwt.core.client.GwtScriptOnly;
import com.google.gwt.core.client.JavaScriptException;
import com.google.gwt.core.shared.SerializableThrowable;
/**
* Helper to resolve the designated type for {@link SerializableThrowable}. If no class metadata
* available then it resolves best effort class name by checking against some common exception
* types.
*/
@GwtScriptOnly
public class ThrowableTypeResolver {
public static void resolveDesignatedType(SerializableThrowable throwable, Throwable designated) {
if (Class.isClassMetadataEnabled()) {
throwable.setDesignatedType(designated.getClass().getName(), true);
} else {
String resolvedName;
Class<?> resolvedType;
try {
throw designated;
} catch (NullPointerException e) {
resolvedName = "java.lang.NullPointerException";
resolvedType = NullPointerException.class;
} catch (JavaScriptException e) {
resolvedName = "com.google.gwt.core.client.JavaScriptException";
resolvedType = JavaScriptException.class;
} catch (RuntimeException e) {
resolvedName = "java.lang.RuntimeException";
resolvedType = RuntimeException.class;
} catch (Exception e) {
resolvedName = "java.lang.Exception";
resolvedType = Exception.class;
} catch (Error e) {
resolvedName = "java.lang.Error";
resolvedType = Error.class;
} catch (Throwable e) {
resolvedName = "java.lang.Throwable";
resolvedType = Throwable.class;
}
throwable.setDesignatedType(resolvedName, resolvedType == designated.getClass());
}
}
}