def p_SetExpr8(self, t):
'SetExpr : LANGLE Set RANGLE IS NOT LANGLE Set RANGLE'
t[0] = symbols.setexprValue2(t[2], symbols.setexprOperator2('is not'), t[7])
def p_SetExpr6(self, t):
'SetExpr : LANGLE Set RANGLE PROPER SUPERSET LANGLE Set RANGLE'
t[0] = symbols.setexprValue2(t[2], symbols.setexprOperator2('proper superset'), t[7])
def p_SetExpr7(self, t):
'SetExpr : LANGLE Set RANGLE IS LANGLE Set RANGLE'
t[0] = symbols.setexprValue2(t[2], symbols.setexprOperator2('is'), t[6])
def p_SetExpr4(self, t):
'SetExpr : LANGLE Set RANGLE SUPERSET LANGLE Set RANGLE'
t[0] = symbols.setexprValue2(t[2], symbols.setexprOperator2('superset'), t[6])