Add JSC runtime

lib/execjs/runtimes.rb

@@ -1,5 +1,6 @@
 module ExecJS
   module Runtimes
+    autoload :JSC,  "execjs/runtimes/jsc"
     autoload :Node, "execjs/runtimes/node"
     autoload :V8,   "execjs/runtimes/v8"
 

lib/execjs/runtimes/jsc.js

@@ -0,0 +1,18 @@
+(function(program, execJS) { execJS(program) })(function() { #{source}
+}, function(program) {
+  var output;
+  try {
+    result = program();
+    if (typeof result == 'undefined' && result !== null) {
+      print('["ok"]');
+    } else {
+      try {
+        print(JSON.stringify(['ok', result]));
+      } catch (err) {
+        print('["err"]');
+      }
+    }
+  } catch (err) {
+    print(JSON.stringify(['err', '' + err]));
+  }
+});

lib/execjs/runtimes/jsc.rb

@@ -0,0 +1,13 @@
+module ExecJS
+  module Runtimes
+    class JSC < Runtime
+      def command(filename)
+        "/System/Library/Frameworks/JavaScriptCore.framework/Versions/A/Resources/jsc #{filename}"
+      end
+
+      def runner_path
+        File.expand_path('../v8.js', __FILE__)
+      end
+    end
+  end
+end

test/test_runtime.rb

@@ -39,6 +39,14 @@ module TestRuntime
   end
 end
 
+class TestJSCRuntime < Test::Unit::TestCase
+  include TestRuntime
+
+  def setup
+    @runtime = ExecJS::Runtimes::JSC.new
+  end
+end
+
 class TestNodeRuntime < Test::Unit::TestCase
   include TestRuntime