Java Code Examples for javax.script.ScriptContext

@Test
/**
 * Check that we can call invokeMethod on an object that we got by
 * evaluating script with different Context set.
 */
public void invokeMethodDifferentContextTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    try {
        // define an object with method on it
        final Object obj = e.eval("({ hello: function() { return 'Hello World!'; } })");

        final ScriptContext ctxt = new SimpleScriptContext();
        ctxt.setBindings(e.createBindings(), ScriptContext.ENGINE_SCOPE);
        e.setContext(ctxt);

        // invoke 'func' on obj - but with current script context changed
        final Object res = ((Invocable) e).invokeMethod(obj, "hello");
        assertEquals(res, "Hello World!");
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 

@Test
public void invokeFunctionInGlobalScopeTest() throws Exception {
     final ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
     final ScriptContext ctxt = engine.getContext();

     // define a function called "func"
     engine.eval("func = function() { return 42 }");

     // move ENGINE_SCOPE Bindings to GLOBAL_SCOPE
     ctxt.setBindings(ctxt.getBindings(ScriptContext.ENGINE_SCOPE), ScriptContext.GLOBAL_SCOPE);

     // create a new Bindings and set as ENGINE_SCOPE
     ctxt.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);

     // define new function that calls "func" now in GLOBAL_SCOPE
     engine.eval("newfunc = function() { return func() }");

     // call "newfunc" and check the return value
     Object value = ((Invocable)engine).invokeFunction("newfunc");
     assertTrue(((Number)value).intValue() == 42);
}
 

private Object evalImpl(final ScriptFunction script, final ScriptContext ctxt, final ScriptObject ctxtGlobal) throws ScriptException {
    if (script == null) {
        return null;
    }
    final ScriptObject oldGlobal = Context.getGlobal();
    final boolean globalChanged = (oldGlobal != ctxtGlobal);
    try {
        if (globalChanged) {
            Context.setGlobal(ctxtGlobal);
        }

        // set ScriptContext variables if ctxt is non-null
        if (ctxt != null) {
            setContextVariables(ctxtGlobal, ctxt);
        }
        return ScriptObjectMirror.translateUndefined(ScriptObjectMirror.wrap(ScriptRuntime.apply(script, ctxtGlobal), ctxtGlobal));
    } catch (final Exception e) {
        throwAsScriptException(e);
        throw new AssertionError("should not reach here");
    } finally {
        if (globalChanged) {
            Context.setGlobal(oldGlobal);
        }
    }
}
 

/**
 * Evaluate a function against a write lock on the graph with commits or
 * rollbacks handled automatically.
 * <p>
 * Note: This method will only work for Python scripts as it makes use of
 * Python specific syntax.
 *
 * @param callback the function to evaluate.
 * @throws ScriptException
 * @throws InterruptedException
 */
public void withWritableGraph(final Object callback) throws ScriptException, InterruptedException {
    final SWritableGraph writableGraph = writableGraph("Scripting View Context Manager");
    LOGGER.log(Level.INFO, "creating context for {0}", writableGraph);
    boolean ok = false;
    try {
        final ScriptContext context = engine.getContext();
        context.setAttribute("__func", callback, ScriptContext.ENGINE_SCOPE);
        context.setAttribute("__p1", writableGraph, ScriptContext.ENGINE_SCOPE);
        engine.eval("__func(__p1)");
        ok = true;
    } catch (ScriptException ex) {
        LOGGER.log(Level.WARNING, "exception in context: {0}", ex.toString());
        writableGraph.rollback();
        throw ex;
    } finally {
        LOGGER.log(Level.WARNING, "context successful = {0}", ok);
        if (ok) {
            writableGraph.commit();
            LOGGER.log(Level.WARNING, "commiting {0}", writableGraph);
        }
    }
}
 

private Object evalImpl(final Context.MultiGlobalCompiledScript mgcs, final ScriptContext ctxt, final Global ctxtGlobal) throws ScriptException {
    final Global oldGlobal = Context.getGlobal();
    final boolean globalChanged = (oldGlobal != ctxtGlobal);
    try {
        if (globalChanged) {
            Context.setGlobal(ctxtGlobal);
        }

        final ScriptFunction script = mgcs.getFunction(ctxtGlobal);
        final ScriptContext oldCtxt = ctxtGlobal.getScriptContext();
        ctxtGlobal.setScriptContext(ctxt);
        try {
            return ScriptObjectMirror.translateUndefined(ScriptObjectMirror.wrap(ScriptRuntime.apply(script, ctxtGlobal), ctxtGlobal));
        } finally {
            ctxtGlobal.setScriptContext(oldCtxt);
        }
    } catch (final Exception e) {
        throwAsScriptException(e, ctxtGlobal);
        throw new AssertionError("should not reach here");
    } finally {
        if (globalChanged) {
            Context.setGlobal(oldGlobal);
        }
    }
}
 

public ScriptMixin( @Structure PolygeneSPI spi,
                    @This Object thisComposite,
                    @State StateHolder state,
                    @Structure Layer layer,
                    @Structure Module module,
                    @Structure Application application )
{
    descriptor = spi.compositeDescriptorFor( thisComposite );
    engine = createNewEngine();
    Bindings mixinBindings = engine.getBindings( ScriptContext.ENGINE_SCOPE );
    mixinBindings.put( "Polygene", spi );
    mixinBindings.put( "application", application );
    mixinBindings.put( "layer", layer );
    mixinBindings.put( "module", module );
    mixinBindings.put( "This", thisComposite );
    mixinBindings.put( "state", state );
    mixinBindings.put( "objectFactory", module.objectFactory() );
    mixinBindings.put( "unitOfWorkFactory", module.unitOfWorkFactory() );
    mixinBindings.put( "valueBuilderFactory", module.valueBuilderFactory() );
    mixinBindings.put( "transientBuilderFactory", module.transientBuilderFactory() );
    mixinBindings.put( "serviceFinder", module.serviceFinder() );
    mixinBindings.put( "typeLookup", module.typeLookup() );
}
 

@Test
public void contextAndBindings() {
    ScriptContext context = engine.getContext();
    assertThat(context, notNullValue());
    assertThat(context, sameInstance(engine.getContext()));

    Bindings globalScope = engine.getBindings(ScriptContext.GLOBAL_SCOPE);
    assertThat(globalScope, notNullValue());
    assertThat(globalScope, sameInstance(engine.getBindings(ScriptContext.GLOBAL_SCOPE)));
    assertThat(globalScope, sameInstance(context.getBindings(ScriptContext.GLOBAL_SCOPE)));
    assertThat(globalScope, sameInstance(manager.getBindings()));

    Bindings engineScope = engine.getBindings(ScriptContext.ENGINE_SCOPE);
    assertThat(engineScope, notNullValue());
    assertThat(engineScope, sameInstance(engine.getBindings(ScriptContext.ENGINE_SCOPE)));
    assertThat(engineScope, sameInstance(context.getBindings(ScriptContext.ENGINE_SCOPE)));
    assertThat(engineScope, not(sameInstance(manager.getBindings())));
}
 

public static void main(final String[] args) throws Exception {
    final ScriptEngineManager manager = new ScriptEngineManager();
    final ScriptEngine engine = manager.getEngineByName("nashorn");

    engine.put("x", "hello");
    // print global variable "x"
    engine.eval("print(x);");
    // the above line prints "hello"

    // Now, pass a different script context
    final ScriptContext newContext = new SimpleScriptContext();
    newContext.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);
    final Bindings engineScope = newContext.getBindings(ScriptContext.ENGINE_SCOPE);

    // add new variable "x" to the new engineScope
    engineScope.put("x", "world");

    // execute the same script - but this time pass a different script context
    engine.eval("print(x);", newContext);
    // the above line prints "world"
}
 

@Test
public void mapScriptObjectMirrorCallsiteTest() throws ScriptException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine engine = m.getEngineByName("nashorn");
    final String TEST_SCRIPT = "typeof obj.foo";

    final Bindings global = engine.getContext().getBindings(ScriptContext.ENGINE_SCOPE);
    engine.eval("var obj = java.util.Collections.emptyMap()");
    // this will drive callsite "obj.foo" of TEST_SCRIPT
    // to use "obj instanceof Map" as it's guard
    engine.eval(TEST_SCRIPT, global);
    // redefine 'obj' to be a script object
    engine.eval("obj = {}");

    final Bindings newGlobal = engine.createBindings();
    // transfer 'obj' from default global to new global
    // new global will get a ScriptObjectMirror wrapping 'obj'
    newGlobal.put("obj", global.get("obj"));

    // Every ScriptObjectMirror is a Map! If callsite "obj.foo"
    // does not see the new 'obj' is a ScriptObjectMirror, it'll
    // continue to use Map's get("obj.foo") instead of ScriptObjectMirror's
    // getMember("obj.foo") - thereby getting null instead of undefined
    assertEquals("undefined", engine.eval(TEST_SCRIPT, newGlobal));
}
 

@Test
public void userEngineScopeBindingsRetentionTest() throws ScriptException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    final ScriptContext newContext = new SimpleScriptContext();
    newContext.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    e.eval("function foo() {}", newContext);

    // definition retained with user's ENGINE_SCOPE Binding
    assertTrue(e.eval("typeof foo", newContext).equals("function"));

    final Bindings oldBindings = newContext.getBindings(ScriptContext.ENGINE_SCOPE);
    // but not in another ENGINE_SCOPE binding
    newContext.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    assertTrue(e.eval("typeof foo", newContext).equals("undefined"));

    // restore ENGINE_SCOPE and check again
    newContext.setBindings(oldBindings, ScriptContext.ENGINE_SCOPE);
    assertTrue(e.eval("typeof foo", newContext).equals("function"));
}
 

@Test
public void invokeFunctionWithCustomScriptContextTest() throws Exception {
    final ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");

    // create an engine and a ScriptContext, but don't set it as default
    ScriptContext scriptContext = new SimpleScriptContext();

    // Set some value in the context
    scriptContext.setAttribute("myString", "foo", ScriptContext.ENGINE_SCOPE);

    // Evaluate script with custom context and get back a function
    final String script = "function (c) { return myString.indexOf(c); }";
    CompiledScript compiledScript = ((Compilable)engine).compile(script);
    Object func = compiledScript.eval(scriptContext);

    // Invoked function should be able to see context it was evaluated with
    Object result = ((Invocable) engine).invokeMethod(func, "call", func, "o", null);
    assertTrue(((Number)result).intValue() == 1);
}
 

@Test
public void globalPerEngineTest() throws ScriptException {
    final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
    final String[] options = new String[] { "--global-per-engine" };
    final ScriptEngine e = fac.getScriptEngine(options);

    e.eval("function foo() {}");

    final ScriptContext newCtx = new SimpleScriptContext();
    newCtx.setBindings(e.createBindings(), ScriptContext.ENGINE_SCOPE);

    // all global definitions shared and so 'foo' should be
    // visible in new Bindings as well.
    assertTrue(e.eval("typeof foo", newCtx).equals("function"));

    e.eval("function bar() {}", newCtx);

    // bar should be visible in default context
    assertTrue(e.eval("typeof bar").equals("function"));
}
 

@Override
public void setup(OperatorContext context)
{
  for (Map.Entry<String, Object> entry : serializableBindings.entrySet()) {
    scriptBindings.put(entry.getKey(), entry.getValue());
  }
  this.scriptContext.setBindings(scriptBindings, ScriptContext.ENGINE_SCOPE);
  engine.setContext(this.scriptContext);
  try {
    for (String s : setupScripts) {
      engine.eval(s, this.scriptContext);
    }
  } catch (ScriptException ex) {
    throw new RuntimeException(ex);
  }
}
 

@Test
public void globalPerEngineTest() throws ScriptException {
    final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
    final String[] options = new String[] { "--global-per-engine" };
    final ScriptEngine e = fac.getScriptEngine(options);

    e.eval("function foo() {}");

    final ScriptContext newCtx = new SimpleScriptContext();
    newCtx.setBindings(e.createBindings(), ScriptContext.ENGINE_SCOPE);

    // all global definitions shared and so 'foo' should be
    // visible in new Bindings as well.
    assertTrue(e.eval("typeof foo", newCtx).equals("function"));

    e.eval("function bar() {}", newCtx);

    // bar should be visible in default context
    assertTrue(e.eval("typeof bar").equals("function"));
}
 

@Test
public void isolatedBindingsWithContextAndSimpleBindings() throws ScriptException {
    ScriptContext context = new SimpleScriptContext();
    Bindings binding = new SimpleBindings();
    context.setBindings(binding, ScriptContext.ENGINE_SCOPE);
    engine.eval("var value = 'Zeta Scorpii'", context);

    assertThat(engine.eval("value", context), instanceOfWith(String.class, is("Zeta Scorpii")));

    context.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);
    assertThat(engine.eval("typeof value", context), instanceOfWith(String.class, is("undefined")));

    context.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    assertThat(engine.eval("typeof value", context), instanceOfWith(String.class, is("undefined")));

    context.setBindings(binding, ScriptContext.ENGINE_SCOPE);
    assertThat(engine.eval("value", context), instanceOfWith(String.class, is("Zeta Scorpii")));
}
 

/**
 * Executes a compiled script and returns the result.
 *
 * @param script Compiled script.
 * @param functionName Optional function or method to invoke.
 * @param scriptContext Script execution context.
 * @return The script result.
 * @throws IllegalArgumentException
 */
public static Object executeScript(CompiledScript script, String functionName, ScriptContext scriptContext, Object[] args) throws ScriptException, NoSuchMethodException {
    Assert.notNull("script", script, "scriptContext", scriptContext);
    Object result = script.eval(scriptContext);
    if (UtilValidate.isNotEmpty(functionName)) {
        if (Debug.verboseOn()) {
            Debug.logVerbose("Invoking function/method " + functionName, module);
        }
        ScriptEngine engine = script.getEngine();
        try {
            Invocable invocableEngine = (Invocable) engine;
            result = invocableEngine.invokeFunction(functionName, args == null ? EMPTY_ARGS : args);
        } catch (ClassCastException e) {
            throw new ScriptException("Script engine " + engine.getClass().getName() + " does not support function/method invocations");
        }
    }
    return result;
}
 

@Test
public void scopeInteractionNewContextSimpleBindingsPropertyAssignment() throws ScriptException {
    ScriptContext context = new SimpleScriptContext();
    context.setBindings(engine.getBindings(ScriptContext.GLOBAL_SCOPE), ScriptContext.GLOBAL_SCOPE);
    context.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    context.setAttribute("value", "Phecda", ScriptContext.ENGINE_SCOPE);
    context.setAttribute("value", "Scheat", ScriptContext.GLOBAL_SCOPE);

    engine.eval("this.value = 'Aludra'", context);

    assertThat(engine.eval("this.value", context), nullValue());
    assertThat(engine.eval("value", context), instanceOfWith(String.class, is("Phecda")));
    assertThat(context.getAttribute("value", ScriptContext.ENGINE_SCOPE),
            instanceOfWith(String.class, is("Phecda")));
    assertThat(context.getAttribute("value", ScriptContext.GLOBAL_SCOPE),
            instanceOfWith(String.class, is("Scheat")));
}
 

private String initPassword(Business business, Person person) throws Exception {
	String str = Config.person().getPassword();
	Pattern pattern = Pattern.compile(com.x.base.core.project.config.Person.REGULAREXPRESSION_SCRIPT);
	Matcher matcher = pattern.matcher(str);
	if (matcher.matches()) {
		String eval = ScriptFactory.functionalization(StringEscapeUtils.unescapeJson(matcher.group(1)));
		ScriptContext scriptContext = new SimpleScriptContext();
		Bindings bindings = scriptContext.getBindings(ScriptContext.ENGINE_SCOPE);
		bindings.put("person", person);
		Object o = ScriptFactory.scriptEngine.eval(eval, scriptContext);
		return o.toString();
	} else {
		return str;
	}
}
 

NashornScriptEngine(final NashornScriptEngineFactory factory, final String[] args, final ClassLoader appLoader) {
    this.factory = factory;
    final Options options = new Options("nashorn");
    options.process(args);

    // throw ParseException on first error from script
    final ErrorManager errMgr = new Context.ThrowErrorManager();
    // create new Nashorn Context
    this.nashornContext = AccessController.doPrivileged(new PrivilegedAction<Context>() {
        @Override
        public Context run() {
            try {
                return new Context(options, errMgr, appLoader);
            } catch (final RuntimeException e) {
                if (Context.DEBUG) {
                    e.printStackTrace();
                }
                throw e;
            }
        }
    }, CREATE_CONTEXT_ACC_CTXT);

    // cache this option that is used often
    this._global_per_engine = nashornContext.getEnv()._global_per_engine;

    // create new global object
    this.global = createNashornGlobal(context);
    // set the default ENGINE_SCOPE object for the default context
    context.setBindings(new ScriptObjectMirror(global, global), ScriptContext.ENGINE_SCOPE);
}
 

@SneakyThrows
private void init() {
	engine = new ScriptEngineManager().getEngineByName("nashorn");
	ctx = new SimpleScriptContext();
	ctx.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);
	engine.eval(new InputStreamReader(getClass().getResourceAsStream("/js/sjcl-1.0.7.js")), ctx);
	engine.eval( "function encrypt(pass,data){try{return sjcl.encrypt(pass,data, {mode:'gcm',ks:256,ts:128});}catch(e){return e;}}", ctx);
	engine.eval( "function decrypt(pass,data){try{return sjcl.decrypt(pass,data);}catch(e){return e;}}", ctx);
}
 

@Test
public void userEngineScopeBindingsNoLeakTest() throws ScriptException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    final ScriptContext newContext = new SimpleScriptContext();
    newContext.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    e.eval("function foo() {}", newContext);

    // in the default context's ENGINE_SCOPE, 'foo' shouldn't exist
    assertTrue(e.eval("typeof foo").equals("undefined"));
}
 

private void setContextVariables(final ScriptObject ctxtGlobal, final ScriptContext ctxt) {
    // set "context" global variable via contextProperty - because this
    // property is non-writable
    contextProperty.setObjectValue(ctxtGlobal, ctxtGlobal, ctxt, false);
    Object args = ScriptObjectMirror.unwrap(ctxt.getAttribute("arguments"), ctxtGlobal);
    if (args == null || args == UNDEFINED) {
        args = ScriptRuntime.EMPTY_ARRAY;
    }
    // if no arguments passed, expose it
    if (! (args instanceof ScriptObject)) {
        args = ((GlobalObject)ctxtGlobal).wrapAsObject(args);
        ctxtGlobal.set("arguments", args, false);
    }
}
 

ScriptRunner(final ScriptEngine engine, final ScriptContext context, final String source, final Object expected, final int iterations) {
    this.engine = engine;
    this.context = context;
    this.source = source;
    this.expected = expected;
    this.iterations = iterations;
}
 

public static void assertLargeObjectObjectArray(final Object[][] array) throws ScriptException {
    assertEquals(4, array.length);
    assertTrue(Arrays.equals(new Object[] { Boolean.FALSE }, array[0]));
    assertTrue(Arrays.equals(new Object[] { 1 }, array[1]));
    assertTrue(Arrays.equals(new Object[] { "foo", 42.3d }, array[2]));
    assertEquals(1, array[3].length);
    e.getBindings(ScriptContext.ENGINE_SCOPE).put("obj", array[3][0]);
    assertEquals(17, e.eval("obj.x"));
}
 

@Test
public void userEngineScopeBindingsTest() throws ScriptException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    e.eval("function func() {}");

    final ScriptContext newContext = new SimpleScriptContext();
    newContext.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    // we are using a new bindings - so it should have 'func' defined
    final Object value = e.eval("typeof func", newContext);
    assertTrue(value.equals("undefined"));
}
 

protected ClojureScriptEngine(ScriptEngineFactory scriptEngineFactory) {
    this.scriptEngineFactory = scriptEngineFactory;

    // Set up the engine bindings
    Bindings engineScope = getBindings(ScriptContext.ENGINE_SCOPE);
    engineScope.put(ENGINE, ENGINE_NAME);
    engineScope.put(ENGINE_VERSION, ENGINE_VERSION);
    engineScope.put(NAME, ENGINE_NAME);
    engineScope.put(LANGUAGE, ENGINE_NAME);
    engineScope.put(LANGUAGE_VERSION, ENGINE_VERSION);
}
 

@Test
public void testScriptContextGetRemoveUndefined() throws Exception {
    final ScriptEngineManager manager = new ScriptEngineManager();
    final ScriptEngine e = manager.getEngineByName("nashorn");
    final ScriptContext ctx = e.getContext();
    assertNull(ctx.getAttribute("undefinedname", ScriptContext.ENGINE_SCOPE));
    assertNull(ctx.removeAttribute("undefinedname", ScriptContext.ENGINE_SCOPE));
}
 

/**
 * Hook to search missing variables in ScriptContext if available
 * @param self used to detect if scope call or not (this function is 'strict')
 * @param name name of the variable missing
 * @return value of the missing variable or undefined (or TypeError for scope search)
 */
public static Object __noSuchProperty__(final Object self, final Object name) {
    final Global global = Global.instance();
    final ScriptContext sctxt = global.currentContext();
    final String nameStr = name.toString();

    if (sctxt != null) {
        final int scope = sctxt.getAttributesScope(nameStr);
        if (scope != -1) {
            return ScriptObjectMirror.unwrap(sctxt.getAttribute(nameStr, scope), global);
        }
    }

    if ("context".equals(nameStr)) {
        return sctxt;
    } else if ("engine".equals(nameStr)) {
        // expose "engine" variable only when there is no security manager
        // or when no class filter is set.
        if (System.getSecurityManager() == null || global.getClassFilter() == null) {
            return global.engine;
        }
    }

    if (self == UNDEFINED) {
        // scope access and so throw ReferenceError
        throw referenceError(global, "not.defined", nameStr);
    }

    return UNDEFINED;
}
 

@Test
public void testConsStringFlattening() throws ScriptException {
    final Bindings b = e.getBindings(ScriptContext.ENGINE_SCOPE);
    final Map<Object, Object> m = new HashMap<>();
    b.put("m", m);
    e.eval("var x = 'f'; x += 'oo'; var y = 'b'; y += 'ar'; m.put(x, y)");
    assertEquals("bar", m.get("foo"));
}
 

private CompiledScript asCompiledScript(final Source source) throws ScriptException {
    final Context.MultiGlobalCompiledScript mgcs;
    final ScriptFunction func;
    final Global oldGlobal = Context.getGlobal();
    final Global newGlobal = getNashornGlobalFrom(context);
    final boolean globalChanged = (oldGlobal != newGlobal);
    try {
        if (globalChanged) {
            Context.setGlobal(newGlobal);
        }

        mgcs = nashornContext.compileScript(source);
        func = mgcs.getFunction(newGlobal);
    } catch (final Exception e) {
        throwAsScriptException(e, newGlobal);
        throw new AssertionError("should not reach here");
    } finally {
        if (globalChanged) {
            Context.setGlobal(oldGlobal);
        }
    }

    return new CompiledScript() {
        @Override
        public Object eval(final ScriptContext ctxt) throws ScriptException {
            final Global globalObject = getNashornGlobalFrom(ctxt);
            // Are we running the script in the same global in which it was compiled?
            if (func.getScope() == globalObject) {
                return evalImpl(func, ctxt, globalObject);
            }

            // different global
            return evalImpl(mgcs, ctxt, globalObject);
        }
        @Override
        public ScriptEngine getEngine() {
            return NashornScriptEngine.this;
        }
    };
}