| 1 | ;;;; ls.scm --- functions for browsing modules |
| 2 | ;;;; |
| 3 | ;;;; Copyright (C) 1995, 1996, 1997, 1999, 2001 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 | ;;;; As a special exception, the Free Software Foundation gives permission |
| 21 | ;;;; for additional uses of the text contained in its release of GUILE. |
| 22 | ;;;; |
| 23 | ;;;; The exception is that, if you link the GUILE library with other files |
| 24 | ;;;; to produce an executable, this does not by itself cause the |
| 25 | ;;;; resulting executable to be covered by the GNU General Public License. |
| 26 | ;;;; Your use of that executable is in no way restricted on account of |
| 27 | ;;;; linking the GUILE library code into it. |
| 28 | ;;;; |
| 29 | ;;;; This exception does not however invalidate any other reasons why |
| 30 | ;;;; the executable file might be covered by the GNU General Public License. |
| 31 | ;;;; |
| 32 | ;;;; This exception applies only to the code released by the |
| 33 | ;;;; Free Software Foundation under the name GUILE. If you copy |
| 34 | ;;;; code from other Free Software Foundation releases into a copy of |
| 35 | ;;;; GUILE, as the General Public License permits, the exception does |
| 36 | ;;;; not apply to the code that you add in this way. To avoid misleading |
| 37 | ;;;; anyone as to the status of such modified files, you must delete |
| 38 | ;;;; this exception notice from them. |
| 39 | ;;;; |
| 40 | ;;;; If you write modifications of your own for GUILE, it is your choice |
| 41 | ;;;; whether to permit this exception to apply to your modifications. |
| 42 | ;;;; If you do not wish that, delete this exception notice. |
| 43 | ;;;; |
| 44 | \f |
| 45 | (define-module (ice-9 ls) |
| 46 | :use-module (ice-9 common-list) |
| 47 | :export (local-definitions-in definitions-in ls lls |
| 48 | recursive-local-define)) |
| 49 | |
| 50 | ;;;; |
| 51 | ;;; local-definitions-in root name |
| 52 | ;;; Returns a list of names defined locally in the named |
| 53 | ;;; subdirectory of root. |
| 54 | ;;; definitions-in root name |
| 55 | ;;; Returns a list of all names defined in the named |
| 56 | ;;; subdirectory of root. The list includes alll locally |
| 57 | ;;; defined names as well as all names inherited from a |
| 58 | ;;; member of a use-list. |
| 59 | ;;; |
| 60 | ;;; A convenient interface for examining the nature of things: |
| 61 | ;;; |
| 62 | ;;; ls . various-names |
| 63 | ;;; |
| 64 | ;;; With no arguments, return a list of definitions in |
| 65 | ;;; `(current-module)'. |
| 66 | ;;; |
| 67 | ;;; With just one argument, interpret that argument as the |
| 68 | ;;; name of a subdirectory of the current module and |
| 69 | ;;; return a list of names defined there. |
| 70 | ;;; |
| 71 | ;;; With more than one argument, still compute |
| 72 | ;;; subdirectory lists, but return a list: |
| 73 | ;;; ((<subdir-name> . <names-defined-there>) |
| 74 | ;;; (<subdir-name> . <names-defined-there>) |
| 75 | ;;; ...) |
| 76 | ;;; |
| 77 | ;;; lls . various-names |
| 78 | ;;; |
| 79 | ;;; Analogous to `ls', but with local definitions only. |
| 80 | |
| 81 | (define (local-definitions-in root names) |
| 82 | (let ((m (nested-ref root names)) |
| 83 | (answer '())) |
| 84 | (if (not (module? m)) |
| 85 | (set! answer m) |
| 86 | (module-for-each (lambda (k v) (set! answer (cons k answer))) m)) |
| 87 | answer)) |
| 88 | |
| 89 | (define (definitions-in root names) |
| 90 | (let ((m (nested-ref root names))) |
| 91 | (if (not (module? m)) |
| 92 | m |
| 93 | (reduce union |
| 94 | (cons (local-definitions-in m '()) |
| 95 | (map (lambda (m2) (definitions-in m2 '())) |
| 96 | (module-uses m))))))) |
| 97 | |
| 98 | (define (ls . various-refs) |
| 99 | (if (pair? various-refs) |
| 100 | (if (cdr various-refs) |
| 101 | (map (lambda (ref) |
| 102 | (cons ref (definitions-in (current-module) ref))) |
| 103 | various-refs) |
| 104 | (definitions-in (current-module) (car various-refs))) |
| 105 | (definitions-in (current-module) '()))) |
| 106 | |
| 107 | (define (lls . various-refs) |
| 108 | (if (pair? various-refs) |
| 109 | (if (cdr various-refs) |
| 110 | (map (lambda (ref) |
| 111 | (cons ref (local-definitions-in (current-module) ref))) |
| 112 | various-refs) |
| 113 | (local-definitions-in (current-module) (car various-refs))) |
| 114 | (local-definitions-in (current-module) '()))) |
| 115 | |
| 116 | (define (recursive-local-define name value) |
| 117 | (let ((parent (reverse! (cdr (reverse name))))) |
| 118 | (and parent (make-modules-in (current-module) parent)) |
| 119 | (local-define name value))) |
| 120 | |
| 121 | ;;; ls.scm ends here |