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package com.sun.xml.bind.v2.model.nav;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;
import java.lang.reflect.WildcardType;
/**
* @author Kohsuke Kawaguchi
*/
abstract class TypeVisitor<T,P> {
public final T visit( Type t, P param ) {
assert t!=null;
if (t instanceof Class)
return onClass((Class)t,param);
if (t instanceof ParameterizedType)
return onParameterizdType( (ParameterizedType)t,param);
if(t instanceof GenericArrayType)
return onGenericArray((GenericArrayType)t,param);
if(t instanceof WildcardType)
return onWildcard((WildcardType)t,param);
if(t instanceof TypeVariable)
return onVariable((TypeVariable)t,param);
// covered all the cases
assert false;
throw new IllegalArgumentException();
}
protected abstract T onClass(Class c, P param);
protected abstract T onParameterizdType(ParameterizedType p, P param);
protected abstract T onGenericArray(GenericArrayType g, P param);
protected abstract T onVariable(TypeVariable v, P param);
protected abstract T onWildcard(WildcardType w, P param);
}
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