protected override void PostWalk(UnaryExpression node)
{
base.PostWalk(node);
if (node.NodeType == AstNodeType.Convert)
{
var op = node.Operand;
if (op.NodeType == AstNodeType.Convert)
{
var inode = op as UnaryExpression;
if (inode.Operand.Type == node.Type)
{
node.Operand = inode.Operand;
}
}
if (node.Type != typeof(object) &&
node.Type != op.Type &&
node.Type.IsAssignableFrom(op.Type) &&
!(node.Type.IsInterface && op.Type.IsValueType))
{
node.SetType(op.Type);
}
}
}
