/*
* Copyright 2011 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.ioc.rebind.ioc.codegen.builder.callstack;
import org.jboss.errai.ioc.rebind.ioc.codegen.AbstractStatement;
import org.jboss.errai.ioc.rebind.ioc.codegen.Context;
import org.jboss.errai.ioc.rebind.ioc.codegen.Statement;
import org.jboss.errai.ioc.rebind.ioc.codegen.VariableReference;
import org.jboss.errai.ioc.rebind.ioc.codegen.builder.impl.ObjectBuilder;
import org.jboss.errai.ioc.rebind.ioc.codegen.exception.InvalidTypeException;
/**
* @author Christian Sadilek <csadilek@redhat.com>
*/
public class ThrowException extends AbstractCallElement {
private String exceptionVariableName;
private Class<? extends Throwable> throwableType;
private Object[] parameters;
public ThrowException(String exceptionVariableName) {
this.exceptionVariableName = exceptionVariableName;
this.parameters = new Object[0];
}
public ThrowException(Class<? extends Throwable> throwableType, Object... parameters) {
this.throwableType = throwableType;
this.parameters = parameters;
}
@Override
public void handleCall(CallWriter writer, Context context, Statement statement) {
statement = new AbstractStatement() {
@Override
public String generate(Context context) {
StringBuilder buf = new StringBuilder();
buf.append("throw ");
if (throwableType != null) {
buf.append(ObjectBuilder.newInstanceOf(throwableType).withParameters(parameters).generate(context));
}
else {
VariableReference exceptionVar = context.getVariable(exceptionVariableName);
if (!exceptionVar.getType().isAssignableTo(Throwable.class)) {
throw new InvalidTypeException("Variable " + exceptionVariableName + " is not a Throwable");
}
buf.append(exceptionVar.generate(context));
}
return buf.toString();
}
};
writer.reset();
writer.append(statement.generate(context));
}
}