| 1 | ;;; utils.scm --- |
| 2 | |
| 3 | ;; Copyright (C) 2000 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; This file is part of Guile VM. |
| 6 | |
| 7 | ;; Guile VM is free software; you can redistribute it and/or modify |
| 8 | ;; it under the terms of the GNU General Public License as published by |
| 9 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 10 | ;; any later version. |
| 11 | ;; |
| 12 | ;; Guile VM is distributed in the hope that it will be useful, |
| 13 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | ;; GNU General Public License for more details. |
| 16 | ;; |
| 17 | ;; You should have received a copy of the GNU General Public License |
| 18 | ;; along with Guile VM; see the file COPYING. If not, write to |
| 19 | ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | ;; Boston, MA 02111-1307, USA. |
| 21 | |
| 22 | ;;; Code: |
| 23 | |
| 24 | (define-module (vm utils) |
| 25 | :use-module (ice-9 and-let*) |
| 26 | :use-module (ice-9 format)) |
| 27 | |
| 28 | (export and-let*) |
| 29 | |
| 30 | (define-public (assert predicate obj) |
| 31 | (if (not (predicate obj)) |
| 32 | (scm-error 'wrong-type-arg #f |
| 33 | "Wrong type argument: ~S, ~S" |
| 34 | (list (procedure-name predicate) obj) #f))) |
| 35 | |
| 36 | (define-public (assert-for-each predicate list) |
| 37 | (for-each (lambda (x) (assert predicate x)) list)) |
| 38 | |
| 39 | (define-public (check-nargs args pred n) |
| 40 | (if (not (pred (length args) n)) |
| 41 | (error "Too many or few arguments"))) |
| 42 | |
| 43 | (define-public (last list) |
| 44 | (car (last-pair list))) |
| 45 | |
| 46 | (define-public (rassq key alist) |
| 47 | (let loop ((alist alist)) |
| 48 | (cond ((null? alist) #f) |
| 49 | ((eq? key (cdar alist)) (car alist)) |
| 50 | (else (loop (cdr alist)))))) |
| 51 | |
| 52 | (define-public (rassq-ref alist key) |
| 53 | (let ((obj (rassq key alist))) |
| 54 | (if obj (car obj) #f))) |
| 55 | |
| 56 | (define-public (map-if pred func list) |
| 57 | (let loop ((list list) (result '())) |
| 58 | (if (null? list) |
| 59 | (reverse! result) |
| 60 | (if (pred (car list)) |
| 61 | (loop (cdr list) (cons (func (car list)) result)) |
| 62 | (loop (cdr list) result))))) |
| 63 | |
| 64 | (define-public (map-tree func tree) |
| 65 | (cond ((null? tree) '()) |
| 66 | ((pair? tree) |
| 67 | (cons (map-tree func (car tree)) (map-tree func (cdr tree)))) |
| 68 | (else (func tree)))) |
| 69 | |
| 70 | (define-public (filter pred list) |
| 71 | (let loop ((list list) (result '())) |
| 72 | (if (null? list) |
| 73 | (reverse! result) |
| 74 | (if (pred (car list)) |
| 75 | (loop (cdr list) (cons (car list) result)) |
| 76 | (loop (cdr list) result))))) |
| 77 | |
| 78 | (define-public (uniq! list) |
| 79 | (do ((rest list (begin (set-cdr! rest (delq! (car rest) (cdr rest))) |
| 80 | (cdr rest)))) |
| 81 | ((null? rest) list))) |
| 82 | |
| 83 | (define-public (finalize obj) |
| 84 | (if (promise? obj) (force obj) obj)) |
| 85 | |
| 86 | (export time) |
| 87 | (define-macro (time form) |
| 88 | `(let* ((gc-start (gc-run-time)) |
| 89 | (tms-start (times)) |
| 90 | (result ,form) |
| 91 | (tms-end (times)) |
| 92 | (gc-end (gc-run-time)) |
| 93 | (get (lambda (proc start end) |
| 94 | (/ (- (proc end) (proc start)) |
| 95 | internal-time-units-per-second)))) |
| 96 | (display "clock utime stime cutime cstime gc\n") |
| 97 | (format #t "~5a ~5a ~5a ~6a ~6a ~a~%" |
| 98 | (get tms:clock tms-start tms-end) |
| 99 | (get tms:utime tms-start tms-end) |
| 100 | (get tms:stime tms-start tms-end) |
| 101 | (get tms:cutime tms-start tms-end) |
| 102 | (get tms:cstime tms-start tms-end) |
| 103 | (get id gc-start gc-end)) |
| 104 | result)) |
| 105 | |
| 106 | ;;; utils.scm ends here |