= JSRuby =

JSRuby is a Ruby interpreter impremented in !JavaScript.

Requires: IE6, Firefox2, Opera9, Safari3, !SpiderMonkey, Rhino

 - JSRuby release (download)
   - 0.1.1 : http://svn.coderepos.org/share/lang/javascript/jsruby/release/jsruby-0.1.1.js
   - 0.1 : http://svn.coderepos.org/share/lang/javascript/jsruby/release/jsruby-0.1.js
 - JSRuby Test Page
   - http://labs.cybozu.co.jp/blog/nakatani/jsruby/jsruby_test.html

== JSRuby Latest Version (For Developers) ==

 - SVN repository (trunk)
   - http://svn.coderepos.org/share/lang/javascript/jsruby/trunk/

{{{
svn co http://svn.coderepos.org/share/lang/javascript/jsruby/trunk/
}}}

"./trunk/check.html" is a simple check form of JSRuby.
You can get a parse tree of ruby script and execute it.
You can also try jsirb(interactive JSRuby).


For making the release package, you execute "make.sh".

{{{
cd ./trunk
bash ./make.sh
}}}

"jsruby.js" will be generated on "./dist/" .

== Functional Test ==

In JSRuby's functional test, you use !JsUnit.

 - !JsUnit : http://www.jsunit.net/
  - download : https://sourceforge.net/project/showfiles.php?group_id=28041

You get "jsunit2.2alpha11.zip" and extract all from it at "./trunk/", so "./jsunit/" directory will be made.

{{{
cd ./trunk
unzip jsunit2.2alpha11.zip
}}}

Open "./jsunit/testRunner.html" by a web browser.

e.g. if you extract on c:/jsruby/trunk/

  file:///c:/jsruby/trunk/jsunit/testRunner.html?testPage=c:/jsruby/trunk/testsuite.html&autoRun=true

== Sample Code ==

Simplely execute a Ruby code.
{{{
var ruby = new RubyEngine.Interpreter();
ruby.exec(" (1..10).each{ |x| puts x*x } ");
alert(ruby.stdout);
}}}

Invoke a user defined Ruby method from Javascript.
{{{
<script type="text/ruby">
def fib(n)
  if n<2
    n
  else
    fib(n-1)+fib(n-2)
  end
end
</script>

<script language="JavaScript" type="text/javascript">
  var ruby = new RubyEngine.Interpreter();
  ruby.exec( RubyEngine.Util.getRubyScript() );  // execute script of type="text/ruby"
  alert( ruby.fib(10) );  // => 55
</script> 
}}}

Use jQuery in JSRuby.
{{{
<script type="text/ruby">
def getfooter
  $jquery('div.footer')[0].innerHTML
end
</script>

<script type="text/javascript" src="jquery-*.*.*.js"></script>
<script type="text/javascript">
  var ruby = new RubyEngine.Interpreter();
  ruby.exec( RubyEngine.Util.getRubyScript() );  // execute script of type="text/ruby"
  ruby.put( "$jquery", $ )
  alert( ruby.getfooter() );
</script> 

<div class="footer"> (content of footer) </div>
}}}

== Supported Features (JSRuby 0.1) ==

 - if ~ elsif ~ else ~ end
 - def
 - puts, p

 - Array#<<
 - Array#[], []=
 - Array#each
 - Array#inject
 - Array#join
 - Array#length
 - Array#member?
 - Array#new
 - Array#push
 - Array#reverse
 - Numeric#+, -, *, /, %, **, ==, <=>
 - Numeric#chr
 - Numeric#to_s
 - Numeric#upto
 - String#+, *, ==
 - String#[], []=
 - String#center
 - String#length
 - String#reverse
 - String#to_i
 - Range#each

 - Extensional:
   - Handling Javascript object
   - $window, $document
   - Calling user defined Ruby method from Javascript


== See Also ==

 - http://labs.cybozu.co.jp/blog/nakatani/2008/01/javascript_ruby_jsruby_01.html ( Japanese )
 - http://labs.cybozu.co.jp/blog/nakatani/2007/11/jsirb_javascript_ruby.html ( Japanese )
 - http://labs.cybozu.co.jp/blog/nakatani/2007/12/jjsruby_jsruby_for_rhino.html ( Japanese )