org.fusesource.scalate.jruby.JRuby.scala Maven / Gradle / Ivy

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Scalate integration with JRuby to access Ruby based filters such as sass

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package org.fusesource.scalate.jruby

import org.fusesource.scalate.util.Log
import java.io.{StringWriter, File}
import scala.collection
import org.jruby.RubyInstanceConfig
import org.jruby.embed.{LocalContextScope, ScriptingContainer}
import collection.JavaConverters._

/**
 * A simple interface to the jruby interpreter
 */
class JRuby(loadPaths:List[File]) extends Log {

  var container = new ScriptingContainer(LocalContextScope.SINGLETON)
  container.getProvider.setLoadPaths(loadPaths.asJava)
  container.setCompileMode(RubyInstanceConfig.CompileMode.JIT)

  RubyInstanceConfig.FASTEST_COMPILE_ENABLED = true
  RubyInstanceConfig.FASTSEND_COMPILE_ENABLED = true
  RubyInstanceConfig.INLINE_DYNCALL_ENABLED = true

  def run(scriptlet:String*):Either[(Throwable, String), AnyRef] = this.synchronized {
    var errors: StringWriter = new StringWriter
    try {
      container.setErrorWriter(errors)
      Right(container.runScriptlet(scriptlet.mkString("\n")))
    } catch {
      case e: Throwable =>
        Left((e, errors.toString))
    }
  }


  def put(name:String, value:AnyRef) = container.put(name, value)

}