Re: Nashorn fails to evaluate compiled script

Wed, 18 Sep 2013 03:54:15 -0700

Filed 8024973: Using a different ScriptContext with a CompiledScript results in ScriptException 

Thanks
-Sundar

On Wednesday 18 September 2013 12:07 PM, A. Sundararajan wrote:

Hi,
Thanks for reporting this - appears to be a bug in script engine impl. I'll file a bug with reduced/small test case. 

Thanks
-Sundar

On Wednesday 18 September 2013 10:37 AM, Viktor Gamov wrote:

Hello nashorn team,

Another question from my side ;-).

I want to test 2 versions of same javascript file - compiled and not.

var json = {
     engine: {
         name: String(factory.engineName),
         version: String(factory.engineVersion),
         threading: String(factory.getParameter("THREADING"))
     },
     language: {
         name: String(factory.languageName),
         version: String(factory.languageVersion)
     }
};
print(JSON.stringify(json));

Here are my test cases:

@Test
public void contexts() throws ScriptException, FileNotFoundException {
System.out.println("Passing JavaObject via ScriptContext to the engine"); File f = new File(this.getClass().getClassLoader().getResource("environment.js").getFile()); 
     ScriptContext scriptContext = new SimpleScriptContext();
     int scope = ScriptContext.ENGINE_SCOPE;
     scriptContext.setAttribute("factory", engine.getFactory(), scope);
     engine.eval(new FileReader(f), scriptContext);
}

This test method prints json as expected

Passing JavaObject via ScriptContext to the engine
{"engine":{"name":"Oracle Nashorn","version":"1.8.0","threading":"null"},"language":{"name":"ECMAScript","version":"ECMA - 262 Edition 5.1"},"script":{}} 

But same script fails with compiled version.

Test method:

@Test
public void contextWithCompiled() throws ScriptException, FileNotFoundException { System.out.println("Passing JavaObject via ScriptContext to CompiledScript"); File f = new File(this.getClass().getClassLoader().getResource("environment.js").getFile()); 
     Compilable compilable = (Compilable) engine;
CompiledScript compiledScript = compilable.compile(new FileReader(f)); 
     ScriptContext scriptContext = new SimpleScriptContext();
     int scope = ScriptContext.ENGINE_SCOPE;
     scriptContext.setAttribute("factory", engine.getFactory(), scope);
     compiledScript.eval(scriptContext);
}


Output:

Passing JavaObject via ScriptContext to CompiledScript

javax.script.ScriptException: [object Error] in <eval> at line number 3
at jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:553) at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:537) at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:517) at jdk.nashorn.api.scripting.NashornScriptEngine.access$100(NashornScriptEngine.java:77) at jdk.nashorn.api.scripting.NashornScriptEngine$4.eval(NashornScriptEngine.java:568) at com.faratasystems.javaone.NashornTest.contextWithCompiled(NashornTest.java:83) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:202) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:65) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120) 
Caused by: <eval>:3 [object Error]
    at jdk.nashorn.internal.runtime.ECMAErrors.error(ECMAErrors.java:57)
at jdk.nashorn.internal.runtime.ECMAErrors.referenceError(ECMAErrors.java:319) at jdk.nashorn.internal.runtime.ECMAErrors.referenceError(ECMAErrors.java:291) at jdk.nashorn.api.scripting.NashornScriptEngine.__noSuchProperty__(NashornScriptEngine.java:286) at jdk.nashorn.internal.scripts.Script$engine._L35(nashorn:engine/resources/engine.js:37) 
    at jdk.nashorn.internal.scripts.Script$\^eval\_.runScript(<eval>:3)
at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:527) at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:204) at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:395) at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:535) 
    ... 30 more


Process finished with exit code 255

java -version
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b106)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b48, mixed mode)

nashorn.jar built based on Revision: 553

Apparently, I missing something again :-) . Please advise...
p.s. Is there any doc about what global objects/methods (like, print, load, JSON, etc) available for js scripts in Nashorn/jjs repl? 

Thanks

--
With Best Regards,
Vik Gamov

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