support multiple top-level expressions

[apaleslimghost]

No description provided.

[fwg]

I just realized one can do "multiple" expressions by just wrapping the input passed to the parser in parentheses, like '('+input+')'. Because, hehe, S-expressions are just lists, and multiple expressions would just be a list of lists.

[fwg]

Also, doing the wrap on the caller's side makes it much more explicit that you expect to get back an array as the top-level "AST node". Returning either the single expression or a list of expressions would require to somehow tell (a b) and 'a b' input apart, where a and b are expressions.
Unfortunately, arrays can not have the primitive/Object-instance trick like strings do for discerning symbols and strings.

[apaleslimghost]

Good point, didn't think of that.