mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 11:50:28 +02:00
9f1a671734
* module/rnrs/conditions.scm: Use core record facilities to define the base condition types, define-condition-type, and the standard condition hierarchy. (simple-condition?): Rename from condition-internal?. * module/rnrs/exceptions.scm: Move `raise' definition here, out from the procedural records layer. (format-simple-condition): Reimplement in a simpler way, hopefully producing the same output. * module/rnrs/records/procedural.scm: * module/rnrs/records/inspection.scm: Import the exceptions and conditions modules, and use the normal raise function.
79 lines
2.9 KiB
Scheme
79 lines
2.9 KiB
Scheme
;;; inspection.scm --- Inspection support for R6RS records
|
||
|
||
;; Copyright (C) 2010, 2019 Free Software Foundation, Inc.
|
||
;;
|
||
;; This library is free software; you can redistribute it and/or
|
||
;; modify it under the terms of the GNU Lesser General Public
|
||
;; License as published by the Free Software Foundation; either
|
||
;; version 3 of the License, or (at your option) any later version.
|
||
;;
|
||
;; This library 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
|
||
;; Lesser General Public License for more details.
|
||
;;
|
||
;; You should have received a copy of the GNU Lesser General Public
|
||
;; License along with this library; if not, write to the Free Software
|
||
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
||
|
||
(library (rnrs records inspection (6))
|
||
(export record?
|
||
record-rtd
|
||
record-type-name
|
||
record-type-parent
|
||
record-type-uid
|
||
record-type-generative?
|
||
record-type-sealed?
|
||
record-type-opaque?
|
||
record-type-field-names
|
||
record-field-mutable?)
|
||
(import (rnrs arithmetic bitwise (6))
|
||
(rnrs base (6))
|
||
(rnrs records procedural (6))
|
||
(rnrs exceptions (6))
|
||
(rnrs conditions (6))
|
||
(rename (only (guile)
|
||
unless
|
||
logbit?
|
||
record?
|
||
record-type-name
|
||
record-type-parent
|
||
record-type-fields
|
||
record-type-opaque?
|
||
record-type-extensible?
|
||
record-type-uid
|
||
record-type-mutable-fields
|
||
struct-vtable)
|
||
(record? guile:record?)))
|
||
|
||
(define (record? obj)
|
||
(and (guile:record? obj)
|
||
(not (record-type-opaque? (struct-vtable obj)))))
|
||
|
||
(define (record-rtd record)
|
||
(unless (record? record)
|
||
(assertion-violation 'record-rtd "not a record" record))
|
||
(struct-vtable record))
|
||
|
||
(define (record-type-generative? rtd)
|
||
(not (record-type-uid rtd)))
|
||
(define (record-type-sealed? rtd)
|
||
(not (record-type-extensible? rtd)))
|
||
(define (record-type-field-names rtd)
|
||
(let ((parent (record-type-parent rtd))
|
||
(fields (record-type-fields rtd)))
|
||
(list->vector
|
||
(if parent
|
||
(list-tail fields (length (record-type-fields parent)))
|
||
fields))))
|
||
(define (record-field-mutable? rtd k)
|
||
(let* ((parent (record-type-parent rtd))
|
||
(parent-nfields (if parent
|
||
(length (record-type-fields parent))
|
||
0))
|
||
(k (+ k parent-nfields)))
|
||
(unless (and (<= parent-nfields k)
|
||
(< k (length (record-type-fields rtd))))
|
||
(raise (make-assertion-violation)))
|
||
(logbit? k (record-type-mutable-fields rtd)))))
|