On 05/09/12 18:59, Andrew Faulds wrote:
On 05/09/12 13:48, Morgan L. Owens wrote:
I'm not a core dev, but I would like to add to the notes above that
"third parties", such as myself, who want to do things with PHP
source other than run it through a PHP interpreter would also
appreciate such a separation of concerns.
To date, I've been basing work, which exposes syntactic structure, on
phc's maketea grammar (Phalanger's is more up to date, but also more
complicated what with its provenance and the Linq and generics and
all), but it's reverse-engineered and certainly wrong (oh, that
reminds me...); the existing grammar is unsuitable because no-one
wants to see _that_.
Something authoritative that _by definition_ tracks the current
version would be more reassuring as regards accuracy and
compatibility (and be more likely to result in something that
deserves to be let out into the world with confidence).
To add to your point:
If we make it produce an AST, I wonder if we could possibly expose
this through PHP, perhaps with some sort of extension. Then parsers
and such for PHP could simply ask PHP to do the parsing for them, and
then do analysis - no more duplicating official PHP grammar.
I'm just speculating here, but this would be pretty cool if we could
do it.
+1. It will be very useful for static analysis, test, control flow graph
etc.
--
Ivan Enderlin
Developer of Hoa
http://hoa.42/ or http://hoa-project.net/
PhD. student at DISC/Femto-ST (Vesontio) and INRIA (Cassis)
http://disc.univ-fcomte.fr/ and http://www.inria.fr/
Member of HTML and WebApps Working Group of W3C
http://w3.org/
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