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)
28 lines
753 B
Racket
28 lines
753 B
Racket
#lang scribble/doc
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@(require scribble/manual
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scribble/struct
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scribble/decode
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scribble/eval
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"parse-common.rkt"
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(for-label racket/class))
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@title[#:tag "stxparse-examples" #:style '(toc)]{Examples}
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This section provides an extended introduction to
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@schememodname[syntax/parse] as a series of worked examples.
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@local-table-of-contents[]
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@include-section["ex-mods-stxclasses.scrbl"]
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@include-section["ex-kw-args.scrbl"]
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@include-section["ex-uniform.scrbl"]
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@include-section["ex-varied.scrbl"]
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@include-section["ex-many-kws.scrbl"] @;{needs revision}
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@include-section["ex-exprc.scrbl"]
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@;{
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@section{Communication via static bindings}
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@section{Control: cut and commit}
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@section{Analyzing expanded code}
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}
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