whether this argument is a constant. @return

@effects this.tokenize' = (parenthesize => concat [ this.tokens, "(", tokenize[child], ")" ] else concat [ this.tokens, tokenize[

@return true if the given expression should be parenthesized when a child of a compound parent

@return the first

return a unmodifiable list of rules @return

Caches the given replacement for the specified node, if this is a caching visitor. Otherwise does nothing. The method returns the replacement node.

returns all unbound variables (ie. variables that are not in the head and appear at most once). Variables appear in the same order as in the body @par

Returns a node generated by replacing the nodes in replacements.keySet() with their corresponding values. @requires all n: replacements.keySet() | n