310b32a2a6
* guix/records.scm (make-syntactic-constructor): Add #:delayed
parameter.
[delayed-field?]: New procedure.
[wrap-field-value]: Use it.
(define-record-type*)[delayed-field?, wrapped-field?]: New procedures.
[thunked-field-accessor-name]: Rename to...
[wrapped-field-accessor-name]: ... this.
[field-spec->srfi-9]: Change 'thunked' to 'wrapped'.
[delayed-field-accessor-definition]: New procedure.
Compute delayed-field accessors and emit them. Pass #:delayed to
'make-syntactic-constructor'.
* tests/records.scm ("define-record-type* & delayed",
"define-record-type* & delayed & default",
"define-record-type* & delayed & inherited"): New tests.
280 lines
8.3 KiB
Scheme
280 lines
8.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (test-records)
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#:use-module (srfi srfi-64)
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#:use-module (ice-9 match)
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#:use-module (ice-9 regex)
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#:use-module (guix records))
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(define (test-module)
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;; A module in which to evaluate things that are known to fail.
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(let ((module (make-fresh-user-module)))
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(module-use! module (resolve-interface '(guix records)))
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module))
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(test-begin "records")
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(test-assert "define-record-type*"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar)
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(baz foo-baz (default (+ 40 2))))
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(and (match (foo (bar 1) (baz 2))
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(($ <foo> 1 2) #t))
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(match (foo (baz 2) (bar 1))
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(($ <foo> 1 2) #t))
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(match (foo (bar 1))
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(($ <foo> 1 42) #t)))))
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(test-assert "define-record-type* with let* behavior"
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;; Make sure field initializers can refer to each other as if they were in
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;; a 'let*'.
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(begin
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(define-record-type* <bar> bar make-bar
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foo?
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(x bar-x)
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(y bar-y (default (+ 40 2)))
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(z bar-z))
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(and (match (bar (x 1) (y (+ x 1)) (z (* y 2)))
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(($ <bar> 1 2 4) #t))
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(match (bar (x 7) (z (* x 3)))
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(($ <bar> 7 42 21)))
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(match (bar (z 21) (x (/ z 3)))
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(($ <bar> 7 42 21) #t)))))
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(test-assert "define-record-type* & inherit"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar)
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(baz foo-baz (default (+ 40 2))))
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(let* ((a (foo (bar 1)))
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(b (foo (inherit a) (baz 2)))
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(c (foo (inherit b) (bar -2)))
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(d (foo (inherit c)))
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(e (foo (inherit (foo (bar 42))) (baz 77))))
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(and (match a (($ <foo> 1 42) #t))
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(match b (($ <foo> 1 2) #t))
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(match c (($ <foo> -2 2) #t))
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(equal? c d)
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(match e (($ <foo> 42 77) #t))))))
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(test-assert "define-record-type* & inherit & let* behavior"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar)
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(baz foo-baz (default (+ 40 2))))
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(let* ((a (foo (bar 77)))
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(b (foo (inherit a) (bar 1) (baz (+ bar 1))))
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(c (foo (inherit b) (baz 2) (bar (- baz 1)))))
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(and (match a (($ <foo> 77 42) #t))
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(match b (($ <foo> 1 2) #t))
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(equal? b c)))))
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(test-assert "define-record-type* & thunked"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar)
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(baz foo-baz (thunked)))
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(let* ((calls 0)
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(x (foo (bar 2)
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(baz (begin (set! calls (1+ calls)) 3)))))
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(and (zero? calls)
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(equal? (foo-bar x) 2)
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(equal? (foo-baz x) 3) (= 1 calls)
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(equal? (foo-baz x) 3) (= 2 calls)))))
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(test-assert "define-record-type* & thunked & default"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar)
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(baz foo-baz (thunked) (default 42)))
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(let ((mark (make-parameter #f)))
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(let ((x (foo (bar 2) (baz (mark))))
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(y (foo (bar 2))))
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(and (equal? (foo-bar x) 2)
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(parameterize ((mark (cons 'a 'b)))
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(eq? (foo-baz x) (mark)))
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(equal? (foo-bar y) 2)
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(equal? (foo-baz y) 42))))))
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(test-assert "define-record-type* & thunked & inherited"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar (thunked))
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(baz foo-baz (thunked) (default 42)))
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(let ((mark (make-parameter #f)))
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(let* ((x (foo (bar 2) (baz (mark))))
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(y (foo (inherit x) (bar (mark)))))
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(and (equal? (foo-bar x) 2)
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(parameterize ((mark (cons 'a 'b)))
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(eq? (foo-baz x) (mark)))
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(parameterize ((mark (cons 'a 'b)))
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(eq? (foo-bar y) (mark)))
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(parameterize ((mark (cons 'a 'b)))
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(eq? (foo-baz y) (mark))))))))
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(test-assert "define-record-type* & delayed"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar (delayed)))
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(let* ((calls 0)
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(x (foo (bar (begin (set! calls (1+ calls)) 3)))))
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(and (zero? calls)
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(equal? (foo-bar x) 3) (= 1 calls)
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(equal? (foo-bar x) 3) (= 1 calls)
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(equal? (foo-bar x) 3) (= 1 calls)))))
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(test-assert "define-record-type* & delayed & default"
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(let ((mark #f))
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar (delayed) (default mark)))
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(let ((x (foo)))
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(set! mark 42)
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(and (equal? (foo-bar x) 42)
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(begin
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(set! mark 7)
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(equal? (foo-bar x) 42))))))
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(test-assert "define-record-type* & delayed & inherited"
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(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar (delayed))
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(baz foo-baz (delayed)))
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(let* ((m 1)
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(n #f)
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(x (foo (bar m) (baz n)))
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(y (foo (inherit x) (baz 'b))))
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(set! n 'a)
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(and (equal? (foo-bar x) 1)
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(eq? (foo-baz x) 'a)
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(begin
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(set! m 777)
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(equal? (foo-bar y) 1)) ;promise was already forced
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(eq? (foo-baz y) 'b)))))
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(test-assert "define-record-type* & missing initializers"
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(catch 'syntax-error
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(lambda ()
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(eval '(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar (default 42))
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(baz foo-baz))
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(foo))
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(test-module))
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#f)
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(lambda (key proc message location form . args)
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(and (eq? proc 'foo)
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(string-match "missing .*initialize.*baz" message)
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(equal? form '(foo))))))
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(test-assert "define-record-type* & extra initializers"
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(catch 'syntax-error
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(lambda ()
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(eval '(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar (default 42)))
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(foo (baz 'what?)))
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(test-module))
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#f)
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(lambda (key proc message location form . args)
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(and (string-match "extra.*initializer.*baz" message)
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(eq? proc 'foo)))))
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(test-assert "define-record-type* & inherit & extra initializers"
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(catch 'syntax-error
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(lambda ()
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(eval '(begin
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(define-record-type* <foo> foo make-foo
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foo?
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(bar foo-bar (default 42)))
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(foo (inherit (foo)) (baz 'what?)))
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(test-module))
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#f)
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(lambda (key proc message location form . args)
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(and (string-match "extra.*initializer.*baz" message)
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(eq? proc 'foo)))))
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(test-equal "recutils->alist"
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'((("Name" . "foo")
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("Version" . "0.1")
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("Synopsis" . "foo bar")
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("Something_else" . "chbouib"))
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(("Name" . "bar")
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("Version" . "1.5")))
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(let ((p (open-input-string "
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# Comment following an empty line, and
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# preceding a couple of empty lines, all of
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# which should be silently consumed.
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Name: foo
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Version: 0.1
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# Comment right in the middle,
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# spanning two lines.
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Synopsis: foo bar
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Something_else: chbouib
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# Comment right before.
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Name: bar
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Version: 1.5
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# Comment at the end.")))
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(list (recutils->alist p)
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(recutils->alist p))))
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(test-equal "recutils->alist with + lines"
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'(("Name" . "foo")
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("Description" . "1st line,\n2nd line,\n 3rd line with extra space,\n4th line without space."))
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(recutils->alist (open-input-string "
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Name: foo
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Description: 1st line,
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+ 2nd line,
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+ 3rd line with extra space,
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+4th line without space.")))
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(test-equal "alist->record" '((1 2) b c)
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(alist->record '(("a" . 1) ("b" . b) ("c" . c) ("a" . 2))
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list
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'("a" "b" "c")
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'("a")))
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(test-end)
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(exit (= (test-runner-fail-count (test-runner-current)) 0))
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