https://github.com/suzannesoy/stxparse-info

Tracking bound syntax pattern variables with syntax-parse
https://github.com/suzannesoy/stxparse-info

macros racket-library

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Tracking bound syntax pattern variables with syntax-parse

• Host: GitHub
• URL: https://github.com/suzannesoy/stxparse-info
• Owner: SuzanneSoy
• License: other
• Created: 2017-01-22T17:12:01.000Z (almost 8 years ago)
• Default Branch: main
• Last Pushed: 2021-04-04T14:25:09.000Z (over 3 years ago)
• Last Synced: 2024-05-22T01:07:56.836Z (6 months ago)
• Topics: macros, racket-library
• Language: Racket
• Homepage:
• Size: 294 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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stxparse-info

=============

The module `stxparse-info/parse` is a patched version of `syntax/parse` which

tracks which syntax pattern variables are bound. This allows some libraries to

change the way syntax pattern variables work.

For example, `phc-graph/subtemplate` automatically derives temporary

identifiers when a template contains `yᵢ …`, and `xᵢ` is a pattern

variable. To know from which `varᵢ` the `yᵢ …` identifiers must be derived,

`phc-graph/subtemplate` needs to know which syntax pattern variables are

within scope.

To use this package, simply require `stxparse-info/pares` instead of

`syntax/parse` Additionally, it is possible to use the for-syntax function

`(current-pvars)` from `stxparse-info/current-pvars` to access the list of

currently-bound pattern variables, and the macro `(with-pvars (pvar ...)

. body)` can be used to add new pattern variables to the list.