jruby · Jan 25, 2016 · Jan 25, 2016
diff --git a/lib/ruby/truffle/truffle/truffle/execjs.rb b/lib/ruby/truffle/truffle/truffle/execjs.rb
@@ -0,0 +1,95 @@
+# Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved. This
+# code is released under a tri EPL/GPL/LGPL license. You can use it,
+# redistribute it and/or modify it under the terms of the:
+#
+# Eclipse Public License version 1.0
+# GNU General Public License version 2
+# GNU Lesser General Public License version 2.1
+
+# Designed for ExecJS 2.6.0, but I'll allow it to try to work with anything for now
+
+require 'execjs/runtime'
+require 'json'
+
+module ExecJS
+
+  class TruffleRuntime < Runtime
+
+    JS_MIME_TYPE = 'application/javascript'
+
+    class Context < Runtime::Context
+
+      STRINGIFY = Truffle::Interop.eval(JS_MIME_TYPE, 'JSON.stringify')
+      PARSE = Truffle::Interop.eval(JS_MIME_TYPE, 'JSON.parse')
+
+      def initialize(runtime, source = '')
+        exec source
+      end
+
+      def exec(source, options = {})
+        Truffle::Interop.eval JS_MIME_TYPE, source
+        nil
+      end
+
+      def eval(source, options = {})
+        unbox(Truffle::Interop.eval(JS_MIME_TYPE, source))
+      end
+
+      def call(identifier, *args)
+        function = Truffle::Interop.eval(JS_MIME_TYPE, identifier)
+        unbox(function.call(function, *args.map { |arg| box(arg) }))
+      end
+
+      private
+
+      def unbox(value)
+        if Truffle::Interop.boxed_primitive?(value)
+          Truffle::Interop.unbox_value(value)
+        else
+          JSON.parse(Truffle::Interop.java_string_to_ruby(STRINGIFY.call(STRINGIFY, value)))
+        end
+      end
+
+      def box(value)
+        if Truffle::Interop.boxed_primitive?(value) || value.is_a?(String)
+          value
+        else
+          PARSE.call(PARSE, JSON.generate(value))
+        end
+      end
+
+    end
+
+    def name
+      'Truffle'
+    end
+
+    def available?
+      defined?(Truffle::Interop) && Truffle::Interop.eval(JS_MIME_TYPE, 'true')
+    rescue RubyTruffleError
+      false
+    end
+
+  end
+
+  # Monkey patches
+
+  module Runtimes
+
+    @runtimes = nil
+
+    class << self
+
+      alias_method :original_runtimes, :runtimes
+
+      def runtimes
+        @runtimes ||= ([TruffleRuntime.new] + original_runtimes)
+      end
+
+    end
+
+  end
+
+  self.runtime = Runtimes.autodetect
+
+end
diff --git a/test/truffle/integration/execjs.sh b/test/truffle/integration/execjs.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Run with for example JRUBY_OPTS='-J-cp ..../trufflejs.jar'
+
+if [[ $JRUBY_OPTS != *"trufflejs.jar"* ]]
+then
+  echo 'No trufflejs.jar found in $JRUBY_OPTS - skipping ExecJS integration test'
+  exit 0
+fi
+
+bin/jruby -X-T bin/gem install execjs -v 2.6.0
+ruby -X+T -Ilib/ruby/gems/shared/gems/execjs-2.6.0/lib test/truffle/integration/execjs/checkruntime.rb
+ruby -X+T -Ilib/ruby/gems/shared/gems/execjs-2.6.0/lib test/truffle/integration/execjs/simple.rb
+ruby -X+T -Ilib/ruby/gems/shared/gems/execjs-2.6.0/lib test/truffle/integration/execjs/coffeescript.rb
diff --git a/test/truffle/integration/execjs/checkruntime.rb b/test/truffle/integration/execjs/checkruntime.rb
@@ -0,0 +1,4 @@
+require 'execjs'
+require 'truffle/execjs'
+
+exit 1 unless ExecJS.runtime.name == 'Truffle'
diff --git a/test/truffle/integration/execjs/coffeescript.js b/test/truffle/integration/execjs/coffeescript.js
diff --git a/test/truffle/integration/execjs/coffeescript.rb b/test/truffle/integration/execjs/coffeescript.rb
@@ -0,0 +1,32 @@
+# Example from the ExecJS README.md
+
+# Copyright (c) 2015-2016 Sam Stephenson
+# Copyright (c) 2015-2016 Josh Peek
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+require "execjs"
+require "truffle/execjs"
+#require "open-uri"
+source = File.read(File.join(File.dirname(__FILE__), 'coffeescript.js')) # open("http://coffeescript.org/extras/coffee-script.js").read
+
+context = ExecJS.compile(source)
+exit 1 unless context.call("CoffeeScript.compile", "square = (x) -> x * x", bare: true) == "var square;\n\nsquare = function(x) {\n  return x * x;\n};\n"
+# => "var square;\nsquare = function(x) {\n  return x * x;\n};"
diff --git a/test/truffle/integration/execjs/simple.rb b/test/truffle/integration/execjs/simple.rb
@@ -0,0 +1,27 @@
+# Example from the ExecJS README.md
+
+# Copyright (c) 2015-2016 Sam Stephenson
+# Copyright (c) 2015-2016 Josh Peek
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+require "execjs"
+require "truffle/execjs"
+exit 1 unless ExecJS.eval("'red yellow blue'.split(' ')") == ["red", "yellow", "blue"]