26 lines
764 B
Racket
26 lines
764 B
Racket
#lang racket
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(require unstable/struct
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"util.rkt")
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(provide replace-modidx)
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(define (replace-modidx expr self-modidx)
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(define (inner-update e)
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(match e
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[(app prefab-struct-key (and key (not #f)))
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(apply make-prefab-struct key
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(map update
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(struct->list e)))]
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[(? module-path-index?)
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(define-values (path mpi) (module-path-index-split e))
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(if (not path)
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self-modidx
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(module-path-index-join path (update mpi)))]
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[(cons a b)
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(cons (update a) (update b))]
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[(? vector?)
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(vector-map update e)]
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[else e]))
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(define-values (first-update update)
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(build-form-memo inner-update))
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(first-update expr))
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