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39 lines
1.3 KiB
Racket
39 lines
1.3 KiB
Racket
#lang racket/base
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(require (for-syntax racket/base racket/syntax) sugar/test)
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(provide (all-defined-out))
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(define-syntax (define-caching-ns stx)
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(syntax-case stx ()
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[(_ name)
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#'(define-caching-ns name null)]
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[(_ name mods)
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(with-syntax ([caching-module-name (generate-temporary)])
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#'(begin
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(module caching-module-name racket/base
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(define-namespace-anchor nsa) ; could handle this macro-introduced name better
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(provide nsa))
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(require 'caching-module-name)
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(define name (namespace-anchor->namespace nsa))
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(require-in-namespace name mods)))]))
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(define (require-in-namespace ns module-names)
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(parameterize ([current-namespace ns])
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(for-each (λ(mod-name) (namespace-require mod-name)) module-names)))
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(define (attach-from-namespace from-ns to-ns module-names)
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(for-each (λ(mod-name) (namespace-attach-module from-ns mod-name to-ns)) module-names)
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(require-in-namespace to-ns module-names))
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(module-test-external
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(define module-names '(xml racket/function))
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(define-caching-ns from-ns module-names)
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(check-true (eval '(andmap procedure? (list xexpr? curry)) from-ns))
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(define to-ns (make-base-namespace))
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(attach-from-namespace from-ns to-ns module-names)
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(check-true (eval '(andmap procedure? (list xexpr? curry)) to-ns)))
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