package org.jboss.errai.ioc.rebind.ioc.codegen;
import org.jboss.errai.ioc.rebind.ioc.codegen.builder.callstack.LoadClassReference;
import org.jboss.errai.ioc.rebind.ioc.codegen.exception.InvalidTypeException;
import org.jboss.errai.ioc.rebind.ioc.codegen.meta.MetaClass;
import org.jboss.errai.ioc.rebind.ioc.codegen.meta.MetaClassFactory;
/**
* @author Mike Brock <cbrock@redhat.com>
*/
public class Cast implements Statement {
private MetaClass toType;
private Statement statement;
private Cast(MetaClass toType, Statement statement) {
this.toType = toType;
this.statement = statement;
}
public static Cast to(Class<?> cls, Statement stmt) {
return to(MetaClassFactory.get(cls), stmt);
}
public static Cast to(MetaClass cls, Statement stmt) {
return new Cast(cls, stmt);
}
@Override
public String generate(Context context) {
String stmt = statement.generate(context);
if (!toType.isAssignableFrom(statement.getType()) && !toType.isAssignableTo(statement.getType()))
throw new InvalidTypeException(statement.getType() + " cannot be cast to " + toType);
return "(" + LoadClassReference.getClassReference(toType, context) + ") " + stmt;
}
@Override
public MetaClass getType() {
return toType;
}
}