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beautiful-racket/beautiful-racket-lib/br/subscope.rkt

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Racket

#lang br
(provide (all-defined-out))
(define #'(introduce-scope _color . _parents)
(with-syntax ([color #'_color]
[color-string (format "~a" (syntax->datum #'_color))]
[color:define (format-id #f "~a:define" #'_color)]
[color:id (format-id #f "~a:id" #'_color)]
[color-binding-id (format-id #f "~a-binding-id" #'_color)]
[color-binding-form (format-id #f "~a-binding-form" #'_color)]
[color-id (format-id #f "~a-id" #'_color)]
[module-name (generate-temporary)]
[parents (if (pair? (syntax->list #'_parents))
(car (syntax->list #'_parents))
(syntax->list #'_parents))])
(replace-context #'_color
#'(begin
(module module-name br
(require (for-syntax br/datum br/syntax))
(provide (for-syntax (all-defined-out)) (all-defined-out))
(begin-for-syntax
(define-scope color parents))
(define #'(color:define _id-in _expr)
(with-syntax* ([color:id (shared-syntax (format-datum "~a:~a" color-string #'_id-in))]
[color-binding-id (color-binding-form #'_id-in)]
[color-id (color #'color-binding-id)])
#'(begin
(define color-binding-id _expr)
(define-syntax color:id
(syntax-id-rules ()
[_ color-id]))))))
(require 'module-name)))))