Hi,
in my code I’m running into an issue for which
https://github.com/coveo/nashorn-commonjs-modules/issues/3 luckily provides a
snippet for reproducing:
@Test
public void testObjectCreateOnFunction() throws ScriptException {
ScriptEngine engine = new
ScriptEngineManager().getEngineByName("nashorn");
engine.put("foo", engine.eval("function() { return {}; }", new
SimpleBindings()));
engine.eval("Object.create(foo());");
}
This fails with:
Caused by: <eval>:1 TypeError: [object Object] is not an Object
at jdk.nashorn.internal.runtime.ECMAErrors.error(ECMAErrors.java:57)
at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:213)
at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:185)
at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:172)
at jdk.nashorn.internal.objects.Global.checkObject(Global.java:2073)
at jdk.nashorn.internal.objects.NativeObject.create(NativeObject.java:261)
at jdk.nashorn.internal.scripts.Script$21$\^eval\_.:program(<eval>:1)
at
jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:623)
at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:494)
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:393)
at
jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:446)
... 31 more
In my own code, the pattern is slightly different, but it fails similarly
(SimpleScriptContext internally uses SimpleBindings as well):
@Test
public void testObjectCreateInFunction() throws ScriptException {
ScriptEngine engine = new
ScriptEngineManager().getEngineByName("nashorn");
SimpleScriptContext context = new SimpleScriptContext();
context.setAttribute("f", engine.eval("(function ()
{Object.create(this)})"), ScriptContext.ENGINE_SCOPE);
engine.eval("f.call({})", context);
}
The issue seems to be that the function object internally isn’t turned from
ScriptObjectMirror into ScriptObject, so Global.checkObject() fails.
I’d be thankful for any hints on whether this may be a bug or intended
behaviour.
Regards,
Jörg
---
Dipl. Inf. Jörg von Frantzius, Technical Director
E-Mail joerg.frantz...@aperto.com
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