Jsdj was purpose built for Flok to allow for macros within javascript code that look like traditional javascript code.

djc = Jsdj.new do |dj|
  #When ever the function puts(...) is written in javascript,
  #It will be replaced by what ever is returned within this
  #block. i.e. makes the function call an inlined macro
  dj.function :puts do |params|
    raise "must have one function argument" if params.length != 1
    raise "argument must be a string literal" if params[0].class != Jsdj::JSStringLiteral
  end
end

#Given a js src string, jsdj will return a js src string
#that contains modifications
result = djc.compile(src)

Jsdj can parse javascript and take any function calls of a certain name and replace them with your specified macro. When you get arguments for a function in Jsdj, the arguments have a type. E.g. JSStringLiteral

dj.function :puts do |params|
  raise "argument must be a string literal" if params[0].class != Jsdj::JSStringLiteral
end

• Supported Types
  • JSStringLiteral - A javascript string literal in quotes (single or double), e.g. foo("bar")
    • value contains the full string as a ruby string
  • JSNumber - A number
    • value contains the value as a number
  • JSOther - Some other kind of expression, either mixed, hash, etc.
• Unsupported Types
  • anonymous functions - Attempting to use an anonymous function will result in undefined behavior. Anonymous functions can be contained within a hash. Expression

• iOS 8 (iPhone)
• HTML5

• Modern nix (FreeBSD, Mac, or Linux)
• Ruby 2.1 or Higher

• If you found a bug, open an issue.
• If you have a feature request, open an issue.
• If you want to contribute, submit a pull request.

RVM users: Run gem install jsdj

System ruby installation? Run sudo gem install jsdj

• Seo Townsend (@seotownsend)

flok is released under the MIT license. See LICENSE for details.