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https://git.savannah.gnu.org/git/guile.git
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8280c8485f
* libguile/weak-table.c: * libguile/weak-table.h: Remove. * libguile.h: Remove weak-table.h include. * libguile/Makefile.am (libguile_@GUILE_EFFECTIVE_VERSION@_la_SOURCES): (DOT_X_FILES): (DOT_DOC_FILES): (modinclude_HEADERS): Remove weak-table.[ch]. * libguile/evalext.c: * libguile/fluids.c: * libguile/hash.c: * libguile/init.c: * libguile/print.c: * libguile/scm.h: Remove uses of weak-table.h and free up the tc7. * libguile/hashtab.c: * libguile/hashtab.h: Add deprecated shims to dispatch to (ice-9 weak-tables) when working on weak tables. * module/ice-9/weak-tables.scm: New implementation. Embeds the hash and equality functions in the table itself. * module/ice-9/object-properties.scm: * module/ice-9/poe.scm: * module/ice-9/popen.scm: * module/ice-9/source-properties.scm: * module/language/cps/compile-bytecode.scm: * module/language/ecmascript/array.scm: * module/language/ecmascript/function.scm: * module/oop/goops/save.scm: * module/srfi/srfi-18.scm: * module/srfi/srfi-69.scm: * module/system/base/types.scm: * module/system/base/types/internal.scm: * module/system/foreign.scm: * module/system/vm/assembler.scm: * test-suite/tests/gc.test: * test-suite/tests/hash.test: * test-suite/tests/srfi-69.test: * test-suite/tests/types.test: * test-suite/tests/weaks.test: Update to use new, non-deprecated weak tables API.
65 lines
2.5 KiB
Scheme
65 lines
2.5 KiB
Scheme
;;; Copyright (C) 2025 Free Software Foundation, Inc.
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;;;
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;;; This library is free software: you can redistribute it and/or modify
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;;; it under the terms of the GNU Lesser General Public License as
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;;; published by the Free Software Foundation, either version 3 of the
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;;; License, or (at your option) any later version.
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;;;
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;;; This library 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 GNU
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;;; Lesser General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Lesser General Public
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;;; License along with this program. If not, see
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;;; <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;;
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;;; Properties are a lispy way to associate random info with random
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;;; objects. Traditionally properties are implemented as an alist or a
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;;; plist actually pertaining to the object in question.
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;;;
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;;; These "object properties" have the advantage that they can be
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;;; associated with any object, even if the object has no plist. Object
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;;; properties are good when you are extending pre-existing objects in
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;;; unexpected ways. They also present a pleasing, uniform
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;;; procedure-with-setter interface. But if you have a data type that
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;;; always has properties, it's often still best to store those
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;;; properties within the object itself.
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;;;
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;;; Code:
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(define-module (ice-9 object-properties)
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#:use-module (ice-9 weak-tables)
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;; FIXME: Change to #:export when deprecated bindings removed.
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#:replace (make-object-property
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object-properties
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set-object-properties!
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object-property
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set-object-property!))
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(define (make-object-property)
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;; Weak tables are thread-safe.
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(let ((prop (make-weak-key-hash-table)))
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(make-procedure-with-setter
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(lambda (obj) (weak-key-hash-table-ref prop obj))
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(lambda (obj val) (weak-key-hash-table-set! prop obj val)))))
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;; FIXME: Deprecate these global properties.
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(define global-properties (make-weak-key-hash-table))
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(define (object-properties obj)
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(weak-key-hash-table-ref global-properties obj
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#:default (lambda (k) '())))
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(define (set-object-properties! obj props)
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(weak-key-hash-table-set! global-properties obj props))
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(define (object-property obj key)
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(assq-ref (object-properties obj) key))
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(define (set-object-property! obj key value)
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(set-object-properties! obj (assq-set! (object-properties obj) key value)))
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