/*
* Copyright 2013 (c) MuleSoft, 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.raml.parser.resolver;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import org.raml.parser.completion.KeySuggestion;
import org.raml.parser.completion.Suggestion;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.NodeTuple;
import org.yaml.snakeyaml.nodes.ScalarNode;
public class EnumHandler implements TupleHandler
{
private Class<? extends Enum> enumClass;
public EnumHandler(Class<? extends Node> tupleValueType, Class<? extends Enum> enumClass)
{
this.enumClass = enumClass;
}
@Override
public boolean handles(NodeTuple tuple)
{
if (tuple.getKeyNode() instanceof ScalarNode)
{
String enumValue = ((ScalarNode) tuple.getKeyNode()).getValue();
try
{
Enum.valueOf(enumClass, enumValue.toUpperCase());
}
catch (IllegalArgumentException e)
{
return false;
}
return true;
}
return false;
}
@Override
public List<Suggestion> getSuggestions()
{
List<Suggestion> result = new ArrayList<Suggestion>();
Field[] declaredFields = enumClass.getDeclaredFields();
for (Field declaredField : declaredFields)
{
if (declaredField.isEnumConstant())
{
result.add(new KeySuggestion(declaredField.getName().toLowerCase()));
}
}
return result;
}
}