[DGD] Grammar question
Jay Shaffstall
jshaffst at netwalk.com
Wed May 14 18:04:29 CEST 2003
I thought I'd been doing pretty well with writing grammars, but have just
encountered a problem that I could use some assistance with. I have the
following simple grammar that demonstrates the problem:
whitespace = /[\b\n\r\t ]/
word = /[^\b\n\r\t ]+/
command: 'write' multiword
multiword: word multiword
multiword: word
The goal is to support a command of the form "write *" where * is any
sequence of words. This works fine, except when one of the words is
"write". So "write I will write" will fail to parse.
I'm obviously not understanding how the grammars parse, since to me it
looks as if the grammar should match "write I will write". Can anyone
explain why this does not parse, and suggest a way around the problem?
Thanks,
Jay
_________________________________________________________________
List config page: http://list.imaginary.com/mailman/listinfo/dgd
More information about the DGD
mailing list