tribes/guix
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/guix.git synced 2026-04-06 21:20:33 +02:00
Code Activity

define-record-type*: Add the `inherit' syntactic constructor keyword.

Browse Source 
* guix/utils.scm (define-record-type*)[make-syntactic-constructor]: New
  `type' parameter.  Add the `inherit' keyword and corresponding support
  code.

* tests/utils.scm ("define-record-type* & inherit", "define-record-type*
  & inherit & letrec* behavior"): New tests.
This commit is contained in:
Ludovic Courtès
2012-08-30 00:18:50 +02:00
parent c79dae6076
commit dcd60f4398
2 changed files with 68 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
tests/utils.scm
View File

@@ -132,6 +132,36 @@
(match (bar (z 21) (x (/ z 3)))
(($ <bar> 7 42 21))))))
(test-assert "define-record-type* & inherit"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar)
(baz foo-baz (default (+ 40 2))))
(let* ((a (foo (bar 1)))
(b (foo (inherit a) (baz 2)))
(c (foo (inherit b) (bar -2)))
(d (foo (inherit c)))
(e (foo (inherit (foo (bar 42))) (baz 77))))
(and (match a (($ <foo> 1 42) #t))
(match b (($ <foo> 1 2) #t))
(match c (($ <foo> -2 2) #t))
(equal? c d)
(match e (($ <foo> 42 77) #t))))))
(test-assert "define-record-type* & inherit & letrec* behavior"
(begin
(define-record-type* <foo> foo make-foo
foo?
(bar foo-bar)
(baz foo-baz (default (+ 40 2))))
(let* ((a (foo (bar 77)))
(b (foo (inherit a) (bar 1) (baz (+ bar 1))))
(c (foo (inherit b) (baz 2) (bar (- baz 1)))))
(and (match a (($ <foo> 77 42) #t))
(match b (($ <foo> 1 2) #t))
(equal? b c)))))
(test-end)