Bogus syntax errors flagged compiling app with v0.9.pre-alpha-2 using R18

[Graeme Defty]

Having investigated this a little more I am convinced there is an issue here.

It is easily reproducible (as described below).

Would someone like to raise an issue for this?  (I am happy to do it, if that's OK)

Looks like a good candidate for a fix before 0.9 is released.  ;-)

Graeme
________

To produce the error:

make app PROJECT=bug_demo

Then create a controller/bug_demo_test_controller.erl with content of

1   -module(bug_demo_test_controller, [Req, SessionId]).
2   -compile(export_all).
3 
4   index('GET',[]) ->
5      Rslt = 1 - length([1,2,3]),
6     {output, "Hello, world!"}.

Compilation fails on line 5 with a syntax error before 'length'.

Changing the '-' to a '+' avoids the error, as does replacing length([1,2,3]) with a simple constant or variable. The error seems to be specific to parsing a '-' sign as the last operator in an expression when the last operand is a function call.

[Dmitry Polyanovsky]

Hi,

thanks for a report. I think it's related to this issue https://github.com/ErlyORM/aleppo/issues/6

[Graeme Defty]

Hi Dmitry,

Yes indeed - looks like the same error exactly. Sorry I didn't find out for myself that it had already been reported :-(  (and sorry for creating so much noise on the list in the process of identifying it)

If anyone else has this issue it is easily worked around as a temporary fix by putting brackets around the final term.

graeme

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