[rules-dev] Long DSL lines

[Wolfgang Laun]

Well, it won't give you a proper line number for an error that's somewhere
within a single range of \-escaped
newlines, but I reinsert the "stolen" newlines at the earliest possible
moment. This ensures that line numbers
in error messages are correct w.r.t. the start of a logical line.

-W


On 6 December 2010 21:00, Michael Neale <michael.neale at gmail.com> wrote:

> only objection I would have is that the error numbers in the expanded
> syntax (should there be compile errors) would not line up with the source
> (which makes it slightly more annoying than it already is to sort out).
>
> But as this thread goes on, perhaps some more holistic thought to what we
> want DSLv2 to be like is in order.
>
>
> On Sun, Dec 5, 2010 at 5:33 AM, Wolfgang Laun <wolfgang.laun at gmail.com>wrote:
>
>> Currently each entry must be a single line of text. This results in long
>> lines, especially on the RHS.
>>
>> I have experimentally inserted a transformation of the DSL text (in
>> DSLTokenizedMappingFile)
>> which converts '\'+EOL on the fly to a space. (The passed-in reader is
>> read into a buffer, '\'+EOL
>> is translated to space, and EOLs are inserted later to readjust the line
>> number.) In a text editor,
>> I can now write, e.g.,
>>
>> then][][Bb]ook the customer for the flight=\
>>   $f.setAvailable( $f.getAvailable() - 1 );\
>>   update( $f );                            \
>>   Booking booking = new Booking();         \
>>   booking.setCustomer( $r.getCustomer() ); \
>>   booking.setFlight( $f );                 \
>>   insert( booking );
>>
>> Of course, the DSL editor will not preserve this, but future development
>> might provide more
>> convenient editing there, too.
>>
>> Any objections?
>> -W
>>
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>>
>>
>
>
> --
> Michael D Neale
> home: www.michaelneale.net
> blog: michaelneale.blogspot.com
>
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>
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