30 lines
800 B
Racket
30 lines
800 B
Racket
#lang scheme/base
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(provide define-require-syntax)
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(require (for-syntax racket/base
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"require-transform.rkt"))
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(define-for-syntax orig-insp (current-code-inspector))
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(define-for-syntax (make-require-macro proc)
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(make-require-transformer
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(lambda (stx)
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(let* ([i (make-syntax-introducer)]
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[d-stx (syntax-disarm stx orig-insp)]
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[new-stx (i (proc (i d-stx)))])
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(expand-import (syntax-rearm new-stx stx))))))
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(define-syntax (define-require-syntax stx)
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(syntax-case stx ()
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[(_ id proc)
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(identifier? #'id)
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(syntax/loc stx
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(define-syntax id
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(make-require-macro proc)))]
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[(_ (id . args) . body)
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(identifier? #'id)
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(syntax/loc stx
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(define-require-syntax id
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(lambda args . body)))]))
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