/*
* Copyright 2011 JBoss, by 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.codegen.framework.builder.callstack;
import org.jboss.errai.codegen.framework.Context;
import org.jboss.errai.codegen.framework.Statement;
import org.jboss.errai.codegen.framework.meta.MetaClass;
/**
* @author Mike Brock <cbrock@redhat.com>
*/
public class LoadNested extends AbstractCallElement {
private Statement statement;
public LoadNested(final Statement statement) {
this.statement = new Statement() {
MetaClass type;
String generatedCache;
@Override
public String generate(Context context) {
if (generatedCache != null) return generatedCache;
String res = statement.generate(context).trim();
type = statement.getType();
if (getNext() == null || (getNext() instanceof ReturnValue)) {
return generatedCache = res;
}
else if (isIdentifierOnly(res)) {
return generatedCache =res;
}
else {
return generatedCache = "(" + res + ")";
}
}
@Override
public MetaClass getType() {
return type;
}
@Override
public String toString() {
return statement.toString();
}
};
}
private static boolean isIdentifierOnly(String s) {
for (int i = 0; i < s.length(); i++) {
if (!Character.isJavaIdentifierPart(s.charAt(0))) return false;
}
return true;
}
@Override
public void handleCall(CallWriter writer, Context context, Statement statement) {
nextOrReturn(writer, context, this.statement);
}
@Override
public String toString() {
return "[[Nest<" + statement + ">]" + next + "]";
}
}