L.s.,
I found a small problem when writing a piece of grammar. A simplified
part of it is shown here;
...
token tag-body { <body-start> ~ <body-end> <body-text> }
token body-start { '[' }
token body-end { ']' }
token body-text { .*? <?body-end> }
...
I needed to do something on body-end so I wrote a method for it using an
actions class and it works of course but in this situation the method is
called twice. One time to say there is a 'body-end' coming and one time
to say it is gobbled up. Because I couldn't see in the method which
situation it was called for I had to rewrite it like below
...
token tag-body { <body-start> ~ <body-end> <body-text> }
token body-start { '[' }
token body-end { ']' }
token body-text { .*? <?body-end2> }
token body-end2 { ']' }
...
which is less elegant. The question is more or less directed to a perl6
implementer;
* Is there a possibility to give the method more information in the
form of boolean flags saying for example that there was a look ahead
match, all in all the parser knows about the way it must seek!
Thanks in advance,
Marcel Timmerman
