/*
* Copyright 2002-2009 the original author or authors.
*
* 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.springframework.expression.spel.ast;
import org.springframework.expression.EvaluationException;
import org.springframework.expression.TypedValue;
import org.springframework.expression.spel.ExpressionState;
/**
* Represents a reference to a type, for example "T(String)" or "T(com.somewhere.Foo)"
*
* @author Andy Clement
*/
public class TypeReference extends SpelNodeImpl {
public TypeReference(int pos,SpelNodeImpl qualifiedId) {
super(pos,qualifiedId);
}
@Override
public TypedValue getValueInternal(ExpressionState state) throws EvaluationException {
// TODO possible optimization here if we cache the discovered type reference, but can we do that?
String typename = (String) children[0].getValueInternal(state).getValue();
if (typename.indexOf(".") == -1 && Character.isLowerCase(typename.charAt(0))) {
TypeCode tc = TypeCode.valueOf(typename.toUpperCase());
if (tc != TypeCode.OBJECT) {
// it is a primitive type
return new TypedValue(tc.getType());
}
}
return new TypedValue(state.findType(typename));
}
@Override
public String toStringAST() {
StringBuilder sb = new StringBuilder();
sb.append("T(");
sb.append(getChild(0).toStringAST());
sb.append(")");
return sb.toString();
}
}
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