Nashorn, javax.script.filename, and load()

[David P. Caldwell]

Note also that "launcher" is a bookmark I am actively updating. It
currently points to commit ID <8990376>, so you can use that if you
don't want to hit a moving target. :)

-- David.

On Mon, Jul 13, 2015 at 9:32 AM, David P. Caldwell
<david at code.davidpcaldwell.com> wrote:
> Yes, this test "works" (as in demonstrates the problem):
>
> $ jrunscript -e
> "load('https://bitbucket.org/api/1.0/repositories/davidpcaldwell/slime/raw/launcher/rhino/jrunscript/api.js?test=filename')"
> stack = https://bitbucket.org/api/1.0/repositories/davidpcaldwell/slime/raw/launcher/rhino/jrunscript/api.js?test=filename
> javax.script.filename = <string>
>
> -- David.
>
> On Mon, Jul 13, 2015 at 8:59 AM, A. Sundararajan
> <sundararajan.athijegannathan at oracle.com> wrote:
>> Hi,
>>
>> AFAIK "javax.script.filename" is not set nashorn code anywhere. It is just
>> read to find source name for engine.eval calls.
>>
>> "load" builtin is not related to jsr-223 API. It works regardless of jsr-223
>> usage and so it does not use (nor writes!) javax.script.filename property.
>>
>> Is there a source link (the links in your email give me "error") or a
>> standalone test?
>>
>> Thanks,
>> -Sundar
>>
>>
>>
>> On Saturday 11 July 2015 01:59 AM, David P. Caldwell wrote:
>>>
>>> According to the documentation for javax.script.ScriptEngine, the key
>>> javax.script.ScriptEngine.FILENAME should point to the current file
>>> being executed. And it does, when executing a local file.
>>>
>>> But when executing a file from a URL using load(), it does not work. I
>>> can reliably get the URL using some rigamarole (see below), but I'd
>>> like a method that's portable across JDK 6-8 (or so).
>>>
>>> Here's the output of the following snippet when executing locally:
>>>
>>> Snippet:
>>> Packages.java.lang.System.out.println("stack = " + new
>>> Packages.java.lang.Throwable().getStackTrace()[0].getFileName());
>>> var global = (function() { return this; })();
>>> Packages.java.lang.System.out.println("javax.script.filename = " +
>>> global[String(Packages.javax.script.ScriptEngine.FILENAME)]);
>>>
>>> Output under JDK 8 locally:
>>> stack = rhino/jrunscript/api.js
>>> javax.script.filename = rhino/jrunscript/api.js
>>>
>>> Output under JDK 8 executing over HTTP via -e load('url'):
>>> stack =
>>> http://bitbucket.org/api/1.0/repositories/davidpcaldwell/jrunscript/raw/local/api.js?test=filename
>>> javax.script.filename = <string>
>>>
>>> And further inspection indicates that's a *string* "<string>"
>>>
>>> Here's JDK 7 for comparison:
>>>
>>> Output under JDK 7 locally:
>>> stack = NativeConstructorAccessorImpl.java
>>> javax.script.filename = rhino/jrunscript/api.js
>>>
>>> Output under JDK 7 executing over HTTP via -e load('url'):
>>> stack = NativeConstructorAccessorImpl.java
>>> javax.script.filename =
>>>
>>> http://bitbucket.org/api/1.0/repositories/davidpcaldwell/jrunscript/raw/local/api.js?test=filename
>>>
>>> Thoughts?
>>>
>>> -- David P. Caldwell
>>> http://www.davidpcaldwell.com/
>>
>>