public ExcelCommandRegistration(MethodInfo methodInfo)
{
CustomAttributes = new List<object>();
var paramExprs = methodInfo.GetParameters()
.Select(pi => Expression.Parameter(pi.ParameterType, pi.Name))
.ToList();
CommandLambda = Expression.Lambda(Expression.Call(methodInfo, paramExprs), methodInfo.Name, paramExprs);
var allMethodAttributes = methodInfo.GetCustomAttributes(true);
foreach (var att in allMethodAttributes)
{
var cmdAtt = att as ExcelCommandAttribute;
if (cmdAtt != null)
{
CommandAttribute = cmdAtt;
// At least ensure that name is set - from the method if need be.
if (string.IsNullOrEmpty(CommandAttribute.Name))
CommandAttribute.Name = methodInfo.Name;
}
else
{
CustomAttributes.Add(att);
}
}
// Check that ExcelCommandAttribute has been set
if (CommandAttribute == null)
{
CommandAttribute = new ExcelCommandAttribute { Name = methodInfo.Name };
}
}
public ExcelCommandRegistration(LambdaExpression commandLambda)
{
if (commandLambda == null) throw new ArgumentNullException("commandLambda");
CommandLambda = commandLambda;
CommandAttribute = new ExcelCommandAttribute { Name = commandLambda.Name };
CustomAttributes = new List<object>();
}
public ExcelCommandRegistration(LambdaExpression commandLambda, ExcelCommandAttribute commandAttribute)
{
if (commandLambda == null) throw new ArgumentNullException("commandLambda");
if (commandAttribute == null) throw new ArgumentNullException("commandAttribute");
CommandLambda = commandLambda;
CommandAttribute = commandAttribute;
// Create the lists - hope the rest is filled in right...?
CustomAttributes = new List<object>();
}
// Fix up the ExplicitRegistration, since we _are_ now explicitly registering
static void ClearExplicitRegistration(List <object> methodAttributes)
{
foreach (object attrib in methodAttributes)
{
if (attrib is ExcelFunctionAttribute funcAttrib)
{
funcAttrib.ExplicitRegistration = false;
continue;
}
ExcelCommandAttribute cmdAttrib = attrib as ExcelCommandAttribute;
if (cmdAttrib != null)
{
cmdAttrib.ExplicitRegistration = false;
}
}
}
