Re: [gentoo-portage-dev] BNF for DEPEND in EAPI0 and EAPI1

[Marius Mauch]

On Sun, 13 Apr 2008 20:04:41 +0200
Björn Michaelsen [EMAIL PROTECTED] wrote:

 Hi there,
 
 I worked through the current PMS and tried to formalize the grammar
 for DEPEND a little better. Maybe someone could have a look at it and
 check it for correctness. It could even become part of the gentoo
 development docs or be an appendix to the PMS. The other grammars
 (SRC_URI etc.) should be fairly easy.
 
 Any comments?

Offhand the 'package name' part is wrong/incomplete, pretty sure even
PMS says that they can't start/end with underscores or dashes (it's a
real PITA to get it right).
Haven't really read the non-terminals section as it's hard to read in
this form, using EBNF or some markup language might help with that.

Marius
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Re: [gentoo-portage-dev] BNF for DEPEND in EAPI0 and EAPI1

[Björn Michaelsen]

Am Mon, 14 Apr 2008 14:22:12 +0200
schrieb Marius Mauch [EMAIL PROTECTED]:

 Offhand the 'package name' part is wrong/incomplete, pretty sure even
 PMS says that they can't start/end with underscores or dashes (it's a
 real PITA to get it right).

I havent found anything like that in the PMS at the appropriate places.
It only limits the characters and restricts a package name not to end
in a hyphen followed by number literals.
However, if there is a need to restrict the package name like that it
_should_ be in the PMS of cause. Other wierd package names allowed by
this regexp and by the PMS: ---, ___1, 1-2a
PMS even allows 137 or , while the regexp does not. That would be
easily fixed, but I guess that is not even intended.

 Haven't really read the non-terminals section as it's hard to read in
 this form, using EBNF or some markup language might help with that.
EBNF would be easy. What kind of markup do you have in mind? (Also I
need to get rid of the left recursion in the BNF)

Have Fun,

Björn


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