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(define-module (pypi sdist-store dependency-sets)
#:use-module (srfi srfi-9)
#:use-module (ice-9 vlist)
#:export (make-dependency-sets-record
add-dependency-set
remove-dependency-set
dependency-sets->list
get-dependency-set-keys-matching
get-dependency-set-keys
get-dependency-set))
(define-record-type <dependency-sets>
(new-dependency-sets-record vhash next-key)
dependency-sets-record?
(vhash dependency-sets-vhash)
(next-key dependency-sets-next-key))
(define (make-dependency-sets-record)
(new-dependency-sets-record
vlist-null
0))
(define (add-dependency-set dependency-sets entry)
(let ((key (dependency-sets-next-key dependency-sets)))
(new-dependency-sets-record
(vhash-consq
key
entry
(dependency-sets-vhash dependency-sets))
(+ key 1))))
(define (remove-dependency-set dependency-sets key)
(new-dependency-sets-record
(vhash-delq
key
(dependency-sets-vhash dependency-sets))
(dependency-sets-next-key dependency-sets)))
(define (dependency-sets->list proc dependency-sets)
(vhash-fold
(lambda (key value result)
(cons
(proc key value)
result))
'()
(dependency-sets-vhash dependency-sets)))
(define (get-dependency-set-keys-matching dependency-sets proc)
(vhash-fold
(lambda (key value result)
(if (proc value)
(cons key result)
result))
'()
(dependency-sets-vhash dependency-sets)))
(define (get-dependency-set-keys dependency-sets)
(vhash-fold
(lambda (key value result)
(cons key result))
'()
(dependency-sets-vhash dependency-sets)))
(define (get-dependency-set dependency-sets key)
(cdr
(vhash-assq key (dependency-sets-vhash dependency-sets))))
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