public CLS_Content.Value ComputeValue(CLS_Content content)
{
content.InStack(this);
if (_listParam != null && _listParam.Count > 0)
{
CLS_Content.Value v = _listParam[0].ComputeValue(content);
object val = v.value;
if ((Type)value_type == typeof(CLS_Type_Var.var))
{
if(v.type!=null)
value_type = v.type;
}
else if (v.type != value_type)
{
val = content.environment.GetType(v.type).ConvertTo(content, v.value, value_type);
}
content.DefineAndSet(value_name, value_type, val);
}
else
{
content.Define(value_name, value_type);
}
//设置环境变量为
content.OutStack(this);
return null;
}