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;;;; ls.scm --- functions for browsing modules
;;;;
;;;; Copyright (C) 1995, 1996, 1997, 1999, 2001, 2006, 2010 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
;;;;
(define-module (ice-9 ls)
:use-module (ice-9 common-list)
:export (local-definitions-in definitions-in ls lls
recursive-local-define))
;;;;
;;; local-definitions-in root name
;;; Returns a list of names defined locally in the named
;;; subdirectory of root.
;;; definitions-in root name
;;; Returns a list of all names defined in the named
;;; subdirectory of root. The list includes alll locally
;;; defined names as well as all names inherited from a
;;; member of a use-list.
;;;
;;; A convenient interface for examining the nature of things:
;;;
;;; ls . various-names
;;;
;;; With no arguments, return a list of definitions in
;;; `(current-module)'.
;;;
;;; With just one argument, interpret that argument as the
;;; name of a subdirectory of the current module and
;;; return a list of names defined there.
;;;
;;; With more than one argument, still compute
;;; subdirectory lists, but return a list:
;;; ((<subdir-name> . <names-defined-there>)
;;; (<subdir-name> . <names-defined-there>)
;;; ...)
;;;
;;; lls . various-names
;;;
;;; Analogous to `ls', but with local definitions only.
(define (local-definitions-in root names)
(let ((m (nested-ref-module root names)))
(if m
(module-map (lambda (k v) k) m)
(nested-ref root names))))
(define (definitions-in root names)
(let ((m (nested-ref-module root names)))
(if m
(reduce union
(cons (local-definitions-in m '())
(map (lambda (m2) (definitions-in m2 '()))
(module-uses m))))
(nested-ref root names))))
(define (ls . various-refs)
(if (pair? various-refs)
(if (cdr various-refs)
(map (lambda (ref)
(cons ref (definitions-in (current-module) ref)))
various-refs)
(definitions-in (current-module) (car various-refs)))
(definitions-in (current-module) '())))
(define (lls . various-refs)
(if (pair? various-refs)
(if (cdr various-refs)
(map (lambda (ref)
(cons ref (local-definitions-in (current-module) ref)))
various-refs)
(local-definitions-in (current-module) (car various-refs)))
(local-definitions-in (current-module) '())))
(define (recursive-local-define name value)
(let ((parent (reverse! (cdr (reverse name)))))
(module-define! (make-modules-in (current-module) parent)
name value)))
;;; ls.scm ends here