This is a TOML parser. It supports TOML 0.2.0, including arrays-of-tables. As of 2022-08-06 it passes 286/314 tests in toml-test (testing against version 0.4.0). Click the "TOML Compliance" badge for logs of toml-test.

This code is a fork of Greg Hendershott's TOML parser. This version is available on pkgs.racket-lang.org.

Installation

raco pkg install --auto toml

Usage

(require toml)
(parse-toml s) ;; where `s` is a `string?`

Goals

• Pass all toml-test tests for TOML 0.2.0.

• Provide useful error messages with positions (line:col:ofs). Do so for both syntax errors and semantic errors (such as table conflicts).

• Return a Racket hasheq that satisfies the json library's jsexpr? predicate, so that you can run it through jsexpr->string to produce a JSON string.

  Caveat: Any TOML datetime values are date structs, which won't satisfy jsexpr?. Originally I parsed these to a current-seconds-style integer value. But toml-tests needs things to be tagged with types, so that's why I had to switch. I should probably provide a conversion function to turn any such instances back into a datetime string so that it can be passed to jsexpr->string.