d7a87c79e0
Changed backtracking algorithm, runtime representations
- syntax classes, ~describe no longer implicitly commit
- ~describe no longer delimits effect of cut
Added keyword & optional args for stxclasses
Added ~do and #:do, ~post, ~commit and #:commit,
~delimit-cut and #:no-delimit-cut
Added syntax/parse/debug, syntax/parse/experimental/*
- expr/c for contracting macro sub-expressions
moved from syntax/parse to syntax/parse/experimental/contract
- syntax class reflection (~reflect, ~splicing-reflect)
- eh-alternative-sets (~eh-var)
- provide-syntax-class/contract
(only for params, not attrs so far)
Changed ~fail to not include POST progress (#:fail still does)
old (~fail _) is now (~post (~fail _))
Made msg argument of ~fail optional
Removed generic "repetition constraint violated" msg
Removed atom-in-list stxclass
Removed unnecessary datum->syntax on cdr of pair pattern
massive improvements to long-list microbenchmarks
Optimization: integrable syntax classes (id, expr, keyword)
need better measurements
Optimization: ad hoc elimination of head/tail choice point
for (EH ... . ()) patterns
Added unstable/wrapc (proc version of expr/c)
36 lines
827 B
Plaintext
36 lines
827 B
Plaintext
Things to do for syntax/parse
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=============================
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TEST & DOC - Generalize stxclass arities.
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TEST & DOC - provide-syntax-class/contract
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Refine expr/c.
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Wrap default args in stxclass parameters with 'this-syntax'
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- other stxparams? like 'this-base-syntax' etc?
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Add debugging mode that records *all* intermediate patterns
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on expectstack.
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Add "roles" to error messages, eg
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expected identifier for foo thingummy name
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instead of the current
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expected identifier
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Improve ~do.
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Improve reflection.
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More cowbell.
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Reorganize tests.
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Allow reflected syntax classes in conventions.
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Rename "conventions" to "convention-set"?
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For documentation, talk about "primary attributes" vs "nested
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attributes". Helps explain ~eh-var and #:auto-nested-attributes.
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Fix syntaxes pinpointed for repetition constraint violations.
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