71 lines
2.3 KiB
Java
71 lines
2.3 KiB
Java
|
/*
|
||
|
|
* Copyright (C) 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 com.bukkit.mcteam.gson;
|
||
|
|
|
||
|
|
import java.lang.reflect.Type;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Decorators a {@code JsonDeserializer} instance with exception handling. This wrapper class
|
||
|
|
* ensures that a {@code JsonDeserializer} will not propagate any exception other than a
|
||
|
|
* {@link JsonParseException}.
|
||
|
|
*
|
||
|
|
* @param <T> type of the deserializer being wrapped.
|
||
|
|
*
|
||
|
|
* @author Inderjeet Singh
|
||
|
|
* @author Joel Leitch
|
||
|
|
*/
|
||
|
|
class JsonDeserializerExceptionWrapper<T> implements JsonDeserializer<T> {
|
||
|
|
|
||
|
|
private final JsonDeserializer<T> delegate;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a wrapped {@link JsonDeserializer} object that has been decorated with
|
||
|
|
* {@link JsonParseException} handling.
|
||
|
|
*
|
||
|
|
* @param delegate the {@code JsonDeserializer} instance to be wrapped.
|
||
|
|
* @throws IllegalArgumentException if {@code delegate} is {@code null}.
|
||
|
|
*/
|
||
|
|
JsonDeserializerExceptionWrapper(JsonDeserializer<T> delegate) {
|
||
|
|
Preconditions.checkNotNull(delegate);
|
||
|
|
this.delegate = delegate;
|
||
|
|
}
|
||
|
|
|
||
|
|
public T deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
|
||
|
|
throws JsonParseException {
|
||
|
|
try {
|
||
|
|
return delegate.deserialize(json, typeOfT, context);
|
||
|
|
} catch (JsonParseException e) {
|
||
|
|
// just rethrow the exception
|
||
|
|
throw e;
|
||
|
|
} catch (Exception e) {
|
||
|
|
// rethrow as a JsonParseException
|
||
|
|
StringBuilder errorMsg = new StringBuilder()
|
||
|
|
.append("The JsonDeserializer ")
|
||
|
|
.append(delegate)
|
||
|
|
.append(" failed to deserialized json object ")
|
||
|
|
.append(json)
|
||
|
|
.append(" given the type ")
|
||
|
|
.append(typeOfT);
|
||
|
|
throw new JsonParseException(errorMsg.toString(), e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public String toString() {
|
||
|
|
return delegate.toString();
|
||
|
|
}
|
||
|
|
}
|