protected override Expression VisitLambda <T>(Expression <T> node)
{
Type changedType = ReflectionX.SubstituteType(typeof(T), from, to);
if (changedType != null)
{
return(Expression.Lambda(changedType, Visit(node.Body),
node.Parameters.Select(p => (ParameterExpression)Visit(p))));
}
return(base.VisitLambda <T>(node));
}
protected override Expression VisitParameter(ParameterExpression node)
{
Type changedType = ReflectionX.SubstituteType(node.Type, from, to);
if (changedType != null)
{
if (!parameterMappings.ContainsKey(node))
{
parameterMappings.Add(node, Expression.Parameter(changedType, node.Name));
}
return(parameterMappings[node]);
}
return(base.VisitParameter(node));
}