Regex functions throw errors

[mrdziuban]

Regex.replace/4, Regex.match?/2, and String.replace/4 throw the following error in the browser:

TypeError: Cannot read property 'run' of undefined

while trying to call

ElixirScript.Core.re.run

See here for a repository that demonstrates the issue: https://github.com/mrdziuban/elixirscript_test.

You can also go to http://mattdziuban.com/elixirscript_test/ and click the buttons to see the error and stack trace.

[bryanjos]

This has to do with the :re module not being implemented yet. Issue #306 catalogs what erlang modules and functions need to be implemented

[mrdziuban]

Thanks for the info. I started implementing :re.run but got stuck trying to decipher the javascript representation of the regex object. The elixir code is:

Regex.replace(~r/foo/i, "hello foo", "world")

and the regex in run looks like this:

function run(subject, regex, options) {
  console.log(regex)
  // => Tuple {values: Array(5), length: 5}
  console.log(regex.values)
  // => [Symbol(re_pattern), 0, 0, 0, "ERCPM�������������������f�o�������@�������������������������������	�f�o�ox�	�"]
}

Any idea how I can extract a meaningful value from that? Thanks in advance.

[bryanjos]

That's odd. Nothing off the top of my head. That must be the binary representation. It's possible the BitString JavaScript module may be able to make something out of it.