A REPL to parse a Ruby script interactively.
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README.md

IRipper

IRipper is a REPL to parse a Ruby script interactively.

Installation

Add this line to your application's Gemfile:

gem 'iripper'

And then execute:

$ bundle

Or install it yourself as:

$ gem install iripper

Usage

Run iripper command, then enter a parsing command and scripts.

$ iripper
iripper> tokenize 1 + 1
["1", " ", "+", " ", "1"]
iripper> sexp 1 + 1
[:program, [[:binary, [:@int, "1", [1, 0]], :+, [:@int, "1", [1, 4]]]]]
iripper> lex 1 + 1
[[[1, 0], :on_int, "1", EXPR_END|EXPR_ENDARG],
 [[1, 1], :on_sp, " ", EXPR_END|EXPR_ENDARG],
 [[1, 2], :on_op, "+", EXPR_BEG],
 [[1, 3], :on_sp, " ", EXPR_BEG],
 [[1, 4], :on_int, "1", EXPR_END|EXPR_ENDARG]]

Available parsing commands are lex, sexp, tokenize.

You can specify the default command via the booting argument, or default command. Also it can be canceled.

$ iripper tokenize
iripper(tokenize)> 1 + 1
["1", " ", "+", " ", "1"]
iripper(tokenize)> default sexp
iripper(sexp)> 1 + 1
[:program, [[:binary, [:@int, "1", [1, 0]], :+, [:@int, "1", [1, 4]]]]]
iripper(sexp)> default
iripper> tokenize 1 + 1
["1", " ", "+", " ", "1"]

Development

After checking out the repo, run bin/setup to install dependencies. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/a2ikm/iripper.