From: Sean O'Halpin <sean.ohalpin@...>
Date: 2007-11-08T16:39:48+09:00
Subject: Re: Dynamic syntax check

On Nov 8, 2007 5:01 AM, aemadrid@gmail.com <aemadrid@gmail.com> wrote:
> Is there any way to check the Ruby syntax on a file or string of Ruby
> code besides doing something like `ruby -v xyz.rb`? Is there a gem
> that would help me here?
>
> Thanks in advance,
>
>
> Adrian Madrid
>
>

This should give you a starting point:

def eval_with_check(str, b = binding)
  begin
    eval(str, b)
    "OK"
  rescue SyntaxError => e
    "ERROR: #{e}"
  end
end

puts eval_with_check("1+2")
puts eval_with_check("this is not valid")
puts eval_with_check("RUBY_VERSION")


You could also look into LoadError and other runtime exceptions (don't
remember off the top of my head).

Regards,
Sean