def visitVariable(self, elem):
if elem.s == "_|_":
return C.Bottom()
elif elem.s == "*":
return C.Mult()
elif elem.s == '+':
return C.Add()
elif elem.s == "-":
return C.Sub()
elif elem.s == "if":
return C.If()
elif elem.s == "==":
return C.Equal()
elif elem.s == "!=":
return C.NEqual()
elif elem.s == "head":
return C.Head()
elif elem.s == "tail":
return C.Tail()
elif elem.s == "seq":
return C.Seq()
elif elem.s == "Cons":
return C.Cons()
elif elem.s == "Nil":
return C.Nil()
elif elem.s == "null":
return C.Null()
elif elem.s == "True":
return C.TRUE()
elif elem.s == "False":
return C.FALSE()
elif elem.s == "concat":
return C.Concat()
return C.Variable(elem.s)
def visitNil(self, elem):
return C.Nil()