Concatenation - class gi. This class implements an Expression denoting the concatenation of two regular languages. Concatenation Constructs an Expression denoting the concatenation of two regular languages. Exception - exception gi. This class implements an Exception .
Exception Constructs an Exception with a message.
Match - class gi. This class implements an Expression denoting the set of characters in a string. Match Constructs an Expression denoting the set containing a character. Match Constructs an Expression denoting the set of characters in a string. NonMatch - class gi.