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;;; ravanan --- High-reproducibility CWL runner powered by Guix
;;; Copyright © 2024 Arun Isaac <arunisaac@systemreboot.net>
;;;
;;; This file is part of ravanan.
;;;
;;; ravanan is free software: you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; ravanan is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with ravanan. If not, see <https://www.gnu.org/licenses/>.
(define-module (ravanan vectors)
#:use-module ((rnrs base) #:select (vector-for-each vector-map))
#:use-module (srfi srfi-1)
#:use-module ((srfi srfi-43) #:select (vector-append
(vector-map . vector-map-indexed)
vector-any
vector-every
vector-fold))
#:export (vector-map->list
vector-append-map
vector-append-map->list
map->vector
vector-filter
vector-filter-map->list
vector-remove
vector-find)
#:re-export (vector-append
vector-for-each
vector-map
vector-map-indexed
vector-any
vector-every))
(define (vector-map->list proc first-vector . other-vectors)
"Map @var{proc} over vectors and return a list of the results."
(reverse
(apply vector-fold
(lambda (_ result . elements)
(cons (apply proc elements)
result))
(list)
first-vector
other-vectors)))
(define (vector-append-map proc first-vector . other-vectors)
"Map @var{proc} over vectors and return a vector of the results appended
together."
(apply vector-fold
(lambda (_ result . elements)
(vector-append result
(apply proc elements)))
(vector)
first-vector
other-vectors))
(define (vector-append-map->list proc first-vector . other-vectors)
"Map @var{proc} over vectors and return a list of the results appended
together."
(apply vector-fold
(lambda (_ result . elements)
(append result
(apply proc elements)))
(list)
first-vector
other-vectors))
(define (map->vector proc first-list . other-lists)
"Map @var{proc} over lists and return a vector of the results."
(list->vector (apply map proc first-list other-lists)))
(define (vector-filter pred vec)
"Return a vector with elements from @var{vec} that pass @var{pred}."
(list->vector (filter pred (vector->list vec))))
(define (vector-filter-map->list proc vec)
"Map @var{proc} over @var{vec} and return a list of the results that are not
@code{#f}."
(filter-map proc (vector->list vec)))
(define (vector-remove proc vec)
"Return a vector with elements from @var{vec} that fail @var{pred}."
(vector-filter (negate proc) vec))
(define (vector-find pred vec)
"Return the first element of @var{vec} that pass @var{pred}. If no such
element exists, return @code{#f}."
(vector-any (lambda (x)
(and (pred x)
x))
vec))
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