///////////////////////////////////////////////////////////////////////
internal int SetUndefined(
Interpreter interpreter,
string pattern,
bool undefined
)
{
int result = 0;
foreach (KeyValuePair <string, IVariable> pair in this)
{
IVariable variable = pair.Value;
if (variable == null)
{
continue;
}
//
// NOTE: This method is EXEMPT from the normal requirement
// that all the variables operated on must be defined.
//
// if (EntityOps.IsUndefined(variable))
// continue;
string name = variable.Name;
if ((pattern == null) || StringOps.Match(
interpreter, StringOps.DefaultMatchMode,
name, pattern, false))
{
if (EntityOps.IsUndefined(variable) == undefined)
{
continue;
}
if (EntityOps.SetUndefined(variable, undefined))
{
result++;
}
}
}
return(result);
}
