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| author | Patrick Georgi <patrick.georgi@coresystems.de> | 2010-04-08 11:37:43 +0000 |
|---|---|---|
| committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2010-04-08 11:37:43 +0000 |
| commit | 7e8c9aa271f13f67e4fc4968d2bf6fb8e5b229d7 (patch) | |
| tree | b962ba3cc6ce30f32c1d0c37c3210abb6e37b10e /util/sconfig/NOTES | |
| parent | 56a684a2ee52b765fc69ec8c922c3da9d8ab7430 (diff) | |
Replace sconfig with a C implementation.
(smaller, faster, standard parser generator, no more python)
Provide precompiled parser, so bison and flex are optional dependencies.
Adapt Makefile and abuild (which uses some sconfig file as a
magic path) to match.
Drop python as dependency from README, and add bison and flex
as optional dependencies
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5373 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/sconfig/NOTES')
| -rw-r--r-- | util/sconfig/NOTES | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/util/sconfig/NOTES b/util/sconfig/NOTES deleted file mode 100644 index 325e76a479..0000000000 --- a/util/sconfig/NOTES +++ /dev/null @@ -1,46 +0,0 @@ -April 14, 2002: - -I haven't worked on Yapps for a while, mainly because I spent all my energy -on trying to graduate. Now that I've finished school, I have several projects -I want to start working on again, including Yapps. - -Notes for myself: - -Add a debugging mode that helps you understand how the grammar - is constructed and how things are being parsed -Look into an English output mode that would use natural language - to describe a grammar -Optimize unused variables -Add a convenience to automatically gather up the values returned - from subpatterns, put them into a list, and return them -Improve the documentation -Write some larger examples -Get rid of old-style regex support -Use SRE's lex support to speed up lexing (this may be hard given that - yapps allows for context-sensitive lexers) -Look over Dan Connoly's experience with Yapps (bugs, frustrations, etc.) - and see what improvements could be made -Add something to pretty-print the grammar (without the actions) -Maybe conditionals? Follow this rule only if <condition> holds. - But this would be useful mainly when multiple rules match, and we - want the first matching rule. The conditional would mean we skip to - the next rule. Maybe this is part of the attribute grammar system, - where rule X<0> can be specified separately from X<N>. -Convenience functions that could build return values for all rules - without specifying the code for each rule individually -Patterns (abstractions over rules) -- for example, comma separated values - have a certain rule pattern that gets replicated all over the place -"Gather" mode that simply outputs the return values for certain nodes. - For example, if you just want all expressions, you could ask yapps - to gather the results of the 'expr' rule into a list. This would - ignore all the higher level structure. -Look at everyone's Yapps grammars, and come up with larger examples - http://www.w3.org/2000/10/swap/SemEnglish.g - http://www.w3.org/2000/10/swap/kifExpr.g - http://www.w3.org/2000/10/swap/rdfn3.g -It would be nice if you could feed text into Yapps (push model) instead - of Yapps reading text out of a string (pull model). However, I think - that would make the resulting parser code mostly unreadable - (like yacc, etc.). Coroutines/stacklesspython may be the answer. - - |