globs and rules and trees, oh my! (was: Re: XPath grammars (Was: Re: globs and trees in Perl6))

2008-10-02 Thread Timothy S. Nelson
On Fri, 3 Oct 2008, Timothy S. Nelson wrote: On Fri, 3 Oct 2008, Timothy S. Nelson wrote: On Thu, 2 Oct 2008, Timothy S. Nelson wrote: Now that Perl6 is in the mix, though, I think that the best way to do it is to make roles that model eg. Nodes, Plexes (Documents), Elements, and the like,

Re: globs and trees in Perl6

2008-10-02 Thread Timothy S. Nelson
On Thu, 2 Oct 2008, Moritz Lenz wrote: [snip] It sounds like a perfect idea for a very general library or rather library framework. Perl 6 has all the hooks to install stuff like this. Agree 100%. But I thought it might be useful toget some feedback from others on this; I'd like to see the

Re: XPath grammars (Was: Re: globs and trees in Perl6)

2008-10-02 Thread Timothy S. Nelson
On Fri, 3 Oct 2008, Timothy S. Nelson wrote: On Thu, 2 Oct 2008, Timothy S. Nelson wrote: Now that Perl6 is in the mix, though, I think that the best way to do it is to make roles that model eg. Nodes, Plexes (Documents), Elements, and the like, and then have operators on them do all the wor

XPath grammars (Was: Re: globs and trees in Perl6)

2008-10-02 Thread Daniel Ruoso
Qui, 2008-10-02 às 12:55 +0100, Tim Bunce escreveu: > Like applying XPath to an XML DOM, only more general and taken > further. > By "more general and taken further" I'm thinking of the same kind of > evoltion from simple regular expressions in perl5 to grammars in perl6. > An XPath query is like a

Re: XPath grammars (Was: Re: globs and trees in Perl6)

2008-10-02 Thread Jon Lang
For tree-oriented pattern matching syntax, I'd recommend for inspiration the RELAX NG Compact Syntax, rather than XPath. Technically, RELAX NG is an XML schema validation language; but the basic principle that it uses is to describe a tree-oriented pattern, and to consider the document to be valid

Re: XPath grammars (Was: Re: globs and trees in Perl6)

2008-10-02 Thread Brandon S. Allbery KF8NH
On Oct 2, 2008, at 10:36 , Timothy S. Nelson wrote: On Thu, 2 Oct 2008, Timothy S. Nelson wrote: Now that Perl6 is in the mix, though, I think that the best way to do it is to make roles that model eg. Nodes, Plexes (Documents), Elements, and the like, and then have operators on them do all

Re: XPath grammars (Was: Re: globs and trees in Perl6)

2008-10-02 Thread Timothy S. Nelson
On Thu, 2 Oct 2008, Timothy S. Nelson wrote: Now that Perl6 is in the mix, though, I think that the best way to do it is to make roles that model eg. Nodes, Plexes (Documents), Elements, and the like, and then have operators on them do all the work (like my idea of using a slash for a combine

Re: globs and trees in Perl6

2008-10-02 Thread Moritz Lenz
Timothy S. Nelson wrote: > Hi all. I've enjoyed(?) reading over the February/March thread > entitled "Musings on operator overloading". I've brought a few thoughts > along; if they're old news, please tell me where to do more reading on it :). > > Over the last year or two, I've di

Re: globs and trees in Perl6

2008-10-02 Thread TSa
HaloO, Tim Bunce wrote: But I have a nagging suspicion that this is a very powerful idea. Applying the expressive power of a grammar-like mechanism to search, backtrack, and match within a tree-like data structure. Is this new or has anyone discussed it before? I've mentioned the idea of usin

Re: XPath grammars (Was: Re: globs and trees in Perl6)

2008-10-02 Thread Timothy S. Nelson
On Thu, 2 Oct 2008, Daniel Ruoso wrote: One thing we realized at that time is that XPath is good enough, even if it seems to be adressing XML specifically, it has the concept of "dimension" that can be extended to represent arbitrary aspects of objects. Hmm. Back in March, before I discovere

Re: globs and trees in Perl6

2008-10-02 Thread Timothy S. Nelson
On Thu, 2 Oct 2008, Tim Bunce wrote: The key point Brandon is making, that I'm not sure you're answering, You probably mean "OtherTim" (ie. me) instead of "Brandon" here :). Yeap, sorry Tim. (I've seen comments like this totally confuse everyone, so I thought I'd better mention i

Re: globs and trees in Perl6

2008-10-02 Thread Tim Bunce
On Thu, Oct 02, 2008 at 07:01:39PM +1000, Timothy S. Nelson wrote: > On Thu, 2 Oct 2008, Tim Bunce wrote: > >> On Wed, Oct 01, 2008 at 11:24:04PM -0400, Brandon S. Allbery KF8NH wrote: >>> On 2008 Oct 1, at 22:23, Timothy S. Nelson wrote: On Wed, 1 Oct 2008, Brandon S. Allbery KF8NH wrote: >>>

Re: globs and trees in Perl6

2008-10-02 Thread Tim Bunce
On Wed, Oct 01, 2008 at 11:24:04PM -0400, Brandon S. Allbery KF8NH wrote: > On 2008 Oct 1, at 22:23, Timothy S. Nelson wrote: >> On Wed, 1 Oct 2008, Brandon S. Allbery KF8NH wrote: >>> On 2008 Oct 1, at 22:14, Timothy S. Nelson wrote: Hi all. I've enjoyed(?) reading over the February/March

Re: globs and trees in Perl6

2008-10-02 Thread Timothy S. Nelson
On Thu, 2 Oct 2008, Tim Bunce wrote: On Wed, Oct 01, 2008 at 11:24:04PM -0400, Brandon S. Allbery KF8NH wrote: On 2008 Oct 1, at 22:23, Timothy S. Nelson wrote: On Wed, 1 Oct 2008, Brandon S. Allbery KF8NH wrote: On 2008 Oct 1, at 22:14, Timothy S. Nelson wrote: Hi all. I've enjoyed