JSR223Context.java

/*
 * Copyright 2013 eXo Platform SAS
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package juzu.plugin.less.impl.lesser.jsr223;

import juzu.plugin.less.impl.lesser.JSContext;

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
public class JSR223Context extends JSContext {

  public static JSR223Context create() {
    ScriptEngine engine = new ScriptEngineManager().getEngineByName("JavaScript");
    if (engine != null) {
      return new JSR223Context(engine);
    } else {
      return null;
    }
  }

  /** . */
  private final ScriptEngine engine;

  private JSR223Context(ScriptEngine engine) {
    this.engine = engine;
  }

  @Override
  public void put(String name, Object value) {
    engine.put(name, value);
  }

  @Override
  public Object eval(String script) throws Exception {
    return engine.eval(script);
  }

  @Override
  public Object invokeFunction(String name, Object... args) throws Exception {
    return ((Invocable)engine).invokeFunction(name, args);
  }
}