| RelationalExpression defines seven operations, "==", "!=", "<", ">", "<="
">=" and "isa". The type of a RelationalExpression is a Boolean, set by a
type checker if there are no errors.
Operator returned is one of Token.EQ, Token.NE, Token.LT, Token.GT,
Token.LE, Token.GE or Token.ISA.
author: Brian S O'Neill version: 25 , 9/07/00 |