Frontend.ParseWrappers around the APIs provided by Menhir
val parse_program :
[< `Code of string | `File of string ] ->
(Ast.untyped_program, Errors.t) Stdlib.result * Warnings.t listParse a full Stan program
val parse_stanfunctions :
[< `Code of string | `File of string ] ->
(Ast.untyped_program, Errors.t) Stdlib.result * Warnings.t listParse a "functions-only" .stanfunctions file, returning an AST (which will only ever have a functions block) or error, and warnings