/*
* Copyright 2010 JBoss, a divison Red Hat, 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 org.jboss.errai.common.client.types;
import com.google.gwt.json.client.*;
import org.jboss.errai.common.client.json.JSONDecoderCli;
import org.jboss.errai.common.client.protocols.SerializationParts;
import java.util.*;
public class JSONTypeHelper {
public static <T> T convert(JSONValue value, Class<T> to) {
JSONValue v;
if ((v = value.isString()) != null) {
return TypeHandlerFactory.convert(String.class, to, ((JSONString) v).stringValue());
} else if ((v = value.isNumber()) != null) {
return TypeHandlerFactory.convert(Number.class, to, ((JSONNumber) v).doubleValue());
} else if ((v = value.isBoolean()) != null) {
return TypeHandlerFactory.convert(Boolean.class, to, ((JSONBoolean) v).booleanValue());
} else if ((v = value.isArray()) != null) {
List list = new ArrayList();
JSONArray arr = (JSONArray) v;
Class cType = to.getComponentType();
while (cType != null && cType.getComponentType() != null)
cType = cType.getComponentType();
if (cType == null) cType = to;
for (int i = 0; i < arr.size(); i++) {
list.add(convert(arr.get(i), cType));
}
T t = TypeHandlerFactory.convert(Collection.class, to, list);
return t;
} else if ((v = value.isObject()) != null) {
JSONObject eMap = (JSONObject) v;
Map<String, Object> m = new HashMap<String, Object>();
for (String key : eMap.keySet()) {
if (SerializationParts.ENCODED_TYPE.equals(key)) {
String className = eMap.get(key).isString().stringValue();
if (TypeDemarshallers.hasDemarshaller(className)) {
return (T) TypeDemarshallers.getDemarshaller(className).demarshall(eMap);
} else {
throw new RuntimeException("no available demarshaller: " + className);
}
}
m.put(key, new JSONDecoderCli().decode(eMap.get(key)));
}
return TypeHandlerFactory.convert(Map.class, to, m);
}
return null;
}
public static String encodeHelper(Object v) {
if (v instanceof String) {
return "\\\"" + v + "\\\"";
} else if (v instanceof Character) {
return "'" + v + "'";
} else {
return String.valueOf(v);
}
}
}