[Scons-users] IndexError in Java parser with anonymous classes
William Blevins
wblevins001 at gmail.com
Wed Oct 7 12:47:19 EDT 2015
On Wed, Oct 7, 2015 at 5:39 PM, William Keith <wak at kaon.co.uk> wrote:
> I'm not so sure that the missing symbols are affecting it - as I said,
> this is a pared down version of the original, which has no such missing
> symbols. Additionally, if I modify the example as follows:
>
> class MyApp
> {
> private interface SomethingElse {}
> private static class Something
> {
> public Something(SomethingElse se) {}
> }
> private static class Bar<T> {}
> private static class Baz {}
> private static interface Foo<U>
> {
> public void boz();
> }
> private static interface Whatsit {}
>
> private static class MyInnerClass
> {
> private void blah()
> {
> new Something(new SomethingElse()
> {
> });
> }
> }
>
> private static void doStuff()
> {
> new Foo<Bar<Baz>>() {
> @Override
> public void boz()
> {
> }
> };
>
It appears to be related with this particular instance.
> }
>
> public static void main(String[] args)
> {
> new Whatsit()
> {
> };
> }
> }
>
> then the example compiles fine with javac, but I still get the same
> IndexError with scons (both 2.3.1 and 2.4.0)
>
>
>
>
> On 7 October 2015 at 17:31, William Blevins <wblevins001 at gmail.com> wrote:
>
>>
>> On Wed, Oct 7, 2015 at 5:27 PM, William Blevins <wblevins001 at gmail.com>
>> wrote:
>>
>>> I just tried his sample with minimal tweaks, and I get a similar stack
>>> trace from SCons dev branch latest.
>>>
>>> On Wed, Oct 7, 2015 at 5:15 PM, Bill Deegan <bill at baddogconsulting.com>
>>> wrote:
>>>
>>>> Will,
>>>>
>>>> Can you try 2.4.0 or the default branch?
>>>> I checked your stack trace and the line numbers don't entirely match up
>>>> with current default, so its possible there are some changes which may
>>>> affect your issue, and if nothing else will make it easier to look at the
>>>> stacktrace/code.
>>>>
>>>> -Bill
>>>>
>>>> On Wed, Oct 7, 2015 at 12:04 PM, William Keith <wak at kaon.co.uk> wrote:
>>>>
>>>>> Bill,
>>>>>
>>>>> I knew there was something I forgot to mention :)
>>>>>
>>>>> Version 2.3.1
>>>>>
>>>>> Will
>>>>>
>>>>> On 7 October 2015 at 16:50, Bill Deegan <bill at baddogconsulting.com>
>>>>> wrote:
>>>>>
>>>>>> Will,
>>>>>>
>>>>>> What version of SCons are you running?
>>>>>>
>>>>>> -Bill
>>>>>>
>>>>>> On Wed, Oct 7, 2015 at 11:10 AM, William Keith <wak at kaon.co.uk>
>>>>>> wrote:
>>>>>>
>>>>>>> Hello,
>>>>>>>
>>>>>>> I am trying to use SCons to build the following Java file:
>>>>>>>
>>>>>>> class MyApp
>>>>>>> {
>>>>>>> private static class MyInnerClass
>>>>>>> {
>>>>>>> private void blah()
>>>>>>> {
>>>>>>> new Something(new SomethingElse()
>>>>>>> {
>>>>>>> });
>>>>>>> }
>>>>>>> }
>>>>>>>
>>>>>>> private static void doStuff()
>>>>>>> {
>>>>>>> new Foo<Bar<Baz>>() {
>>>>>>> @Override
>>>>>>> public void boz()
>>>>>>> {
>>>>>>> }
>>>>>>> };
>>>>>>> }
>>>>>>>
>>>>>>> public static void main(String[] args)
>>>>>>> {
>>>>>>> new Whatsit()
>>>>>>> {
>>>>>>> };
>>>>>>> }
>>>>>>> }
>>>>>>>
>>>>>>> My SConstruct is as follows:
>>>>>>>
>>>>>>> app_classes = Java(target='build/classes', source='src',
>>>>>>> JAVAVERSION='1.7')
>>>>>>> jar_sources = app_classes
>>>>>>> Jar(target='build/target.jar', source=jar_sources)
>>>>>>>
>>>>>>> Running scons with the above results in an IndexError with the
>>>>>>> following stack trace:
>>>>>>>
>>>>>>> scons: Reading SConscript files ...
>>>>>>> IndexError: list index out of range:
>>>>>>> File "/home/projects/scons_java_test/SConstruct", line 7:
>>>>>>> app_classes = Java(target='build/classes', source='src',
>>>>>>> JAVAVERSION='1.7')
>>>>>>> File "/usr/lib/scons/SCons/Script/SConscript.py", line 609:
>>>>>>> return method(*args, **kw)
>>>>>>> File "/usr/lib/scons/SCons/Environment.py", line 224:
>>>>>>> return self.method(*nargs, **kwargs)
>>>>>>> File "/usr/lib/scons/SCons/Tool/javac.py", line 195:
>>>>>>> result.extend(b(t, s, *args, **kw))
>>>>>>> File "/usr/lib/scons/SCons/Environment.py", line 260:
>>>>>>> return MethodWrapper.__call__(self, target, source, *args, **kw)
>>>>>>> File "/usr/lib/scons/SCons/Environment.py", line 224:
>>>>>>> return self.method(*nargs, **kwargs)
>>>>>>> File "/usr/lib/scons/SCons/Builder.py", line 633:
>>>>>>> return self._execute(env, target, source, OverrideWarner(kw),
>>>>>>> ekw)
>>>>>>> File "/usr/lib/scons/SCons/Builder.py", line 554:
>>>>>>> tlist, slist = self._create_nodes(env, target, source)
>>>>>>> File "/usr/lib/scons/SCons/Builder.py", line 518:
>>>>>>> target, source = self.emitter(target=tlist, source=slist,
>>>>>>> env=env)
>>>>>>> File "/usr/lib/scons/SCons/Tool/javac.py", line 97:
>>>>>>> pkg_dir, classes = parse_java_file(f.rfile().get_abspath(),
>>>>>>> version)
>>>>>>> File "/usr/lib/scons/SCons/Tool/JavaCommon.py", line 286:
>>>>>>> return parse_java(open(fn, 'r').read(), version)
>>>>>>> File "/usr/lib/scons/SCons/Tool/JavaCommon.py", line 300:
>>>>>>> currstate = currstate.parseToken(token)
>>>>>>> File "/usr/lib/scons/SCons/Tool/JavaCommon.py", line 221:
>>>>>>> self.outer_state.addAnonClass()
>>>>>>> File "/usr/lib/scons/SCons/Tool/JavaCommon.py", line 178:
>>>>>>> self.__getAnonStack()[-1] = self.__getAnonStack()[-1] + 1
>>>>>>>
>>>>>>> Note that I have attempted to pare the example down to just what is
>>>>>>> essential to reproduce this issue. Apart from some missing symbols, it
>>>>>>> should be valid Java. The original (un-pared-down) version compiles cleanly
>>>>>>> with javac but produces the same exception in SCons' Java parser.
>>>>>>>
>>>>>>>
>> The missing symbols my actually be important here because SCons requires
>> parsing the *.java files in order to determine the *.java to *.class
>> input/output relationship. Java files often generate more than one class
>> file when compiled and these files need to be accounted for in the
>> dependency graph.
>>
>>
>>> I am fairly sure this is a new bug. Can someone please advise?
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Will
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Scons-users mailing list
>>>>>>> Scons-users at scons.org
>>>>>>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Scons-users mailing list
>>>>>> Scons-users at scons.org
>>>>>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Scons-users mailing list
>>>>> Scons-users at scons.org
>>>>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> Scons-users mailing list
>>>> Scons-users at scons.org
>>>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>>
>>>>
>>>
>>
>> _______________________________________________
>> Scons-users mailing list
>> Scons-users at scons.org
>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>
>>
>
> _______________________________________________
> Scons-users mailing list
> Scons-users at scons.org
> https://pairlist4.pair.net/mailman/listinfo/scons-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://pairlist4.pair.net/pipermail/scons-users/attachments/20151007/4f321342/attachment-0001.html>
More information about the Scons-users
mailing list