Ryan Culpepper
c61353a0f8
syntax/parse: add ~undo, #:undo for unwinding effects
...
Note: this version doesn't work with ~commit or ~!, because
it stores both choice points and undo actions in the failure
continuation. Commit and cut should discard choice points but
preserve undo actions.
2018-01-18 16:59:26 +01:00
Ryan Culpepper
f238a16fbc
syntax/parse: add ~or* and ~alt, like ~or{S,H} and ~or{EH}, respectively
2018-01-18 14:59:28 +01:00
Georges Dupéron
c259afbe61
Removed parse/private/keywords.rkt, to improve compatibility with the official syntax/parse (that file defines ~optional etc.)
2017-01-28 05:16:59 +01:00
Georges Dupéron
5be04ef8fd
Removed all structure definitions from the copy of syntax/parse, and used the ones definied in the official syntax/parse
2017-01-28 05:16:48 +01:00
Georges Dupéron
02a0d43d0d
Changed syntax/parse module paths to stxparse-info/parse
2017-01-28 05:16:33 +01:00
Georges Dupéron
8d4f899aa3
Imported files from 28f1df4cff
2017-01-28 05:16:11 +01:00
