ice-9/ls.scm

   1 ;;;; ls.scm --- functions for browsing modules
   2 ;;;;
   3 ;;;;    Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   4 ;;;;
   5 ;;;; This program is free software; you can redistribute it and/or modify
   6 ;;;; it under the terms of the GNU General Public License as published by
   7 ;;;; the Free Software Foundation; either version 2, or (at your option)
   8 ;;;; any later version.
   9 ;;;;
  10 ;;;; This program is distributed in the hope that it will be useful,
  11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 ;;;; GNU General Public License for more details.
  14 ;;;;
  15 ;;;; You should have received a copy of the GNU General Public License
  16 ;;;; along with this software; see the file COPYING.  If not, write to
  17 ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18 ;;;; Boston, MA 02111-1307 USA
  19 ;;;;
  20 \f
  21 (define-module (ice-9 ls)
  22   :use-module (ice-9 common-list))
  23
  24 ;;;;
  25 ;;;     local-definitions-in root name
  26 ;;;             Returns a list of names defined locally in the named
  27 ;;;             subdirectory of root.
  28 ;;;     definitions-in root name
  29 ;;;             Returns a list of all names defined in the named
  30 ;;;             subdirectory of root.  The list includes alll locally
  31 ;;;             defined names as well as all names inherited from a
  32 ;;;             member of a use-list.
  33 ;;;
  34 ;;; A convenient interface for examining the nature of things:
  35 ;;;
  36 ;;;     ls . various-names
  37 ;;;
  38 ;;;             With just one argument, interpret that argument as the
  39 ;;;             name of a subdirectory of the current module and
  40 ;;;             return a list of names defined there.
  41 ;;;
  42 ;;;             With more than one argument, still compute
  43 ;;;             subdirectory lists, but return a list:
  44 ;;;                     ((<subdir-name> . <names-defined-there>)
  45 ;;;                      (<subdir-name> . <names-defined-there>)
  46 ;;;                      ...)
  47 ;;;
  48
  49 (define-public (local-definitions-in root names)
  50   (let ((m (nested-ref root names))
  51         (answer '()))
  52     (if (not (module? m))
  53         (set! answer m)
  54         (module-for-each (lambda (k v) (set! answer (cons k answer))) m))
  55     answer))
  56
  57 (define-public (definitions-in root names)
  58   (let ((m (nested-ref root names)))
  59     (if (not (module? m))
  60         m
  61         (reduce union
  62                 (cons (local-definitions-in m  '())
  63                       (map (lambda (m2) (definitions-in m2 '()))
  64                            (module-uses m)))))))
  65
  66 (define-public (ls . various-refs)
  67   (and (pair? various-refs)
  68        (if (cdr various-refs)
  69            (map (lambda (ref)
  70                   (cons ref (definitions-in (current-module) ref)))
  71                 various-refs)
  72            (definitions-in (current-module) (car various-refs)))))
  73
  74 (define-public (lls . various-refs)
  75   (and (pair? various-refs)
  76        (if (cdr various-refs)
  77            (map (lambda (ref)
  78                   (cons ref (local-definitions-in (current-module) ref)))
  79                 various-refs)
  80            (local-definitions-in (current-module) (car various-refs)))))
  81
  82 (define-public (recursive-local-define name value)
  83   (let ((parent (reverse! (cdr (reverse name)))))
  84     (and parent (make-modules-in (current-module) parent))
  85     (local-define name value)))