31 lines
1.2 KiB
Scheme
31 lines
1.2 KiB
Scheme
|
; Copyright (c) 1993-1999 by Richard Kelsey and Jonathan Rees. See file COPYING.
|
||
|
|
|
||
|
|
|
||
|
|
; Redefinitions of some usual Scheme things so as to make the new
|
||
|
|
; exception system kick in when it needs to.
|
||
|
|
|
||
|
|
(define (number? n)
|
||
|
|
(or ((structure-ref true-scheme number?) n)
|
||
|
|
(extended-number? n)))
|
||
|
|
|
||
|
|
;(define (integer? n)
|
||
|
|
; (if ((structure-ref true-scheme number?) n)
|
||
|
|
; ((structure-ref true-scheme integer?) n)
|
||
|
|
; (and (extended-number? n)
|
||
|
|
; ... raise exception ...)))
|
||
|
|
|
||
|
|
(define (+ x y) ((structure-ref true-scheme +) x y))
|
||
|
|
(define (* x y) ((structure-ref true-scheme *) x y))
|
||
|
|
(define (- x y) ((structure-ref true-scheme -) x y))
|
||
|
|
(define (/ x y) ((structure-ref true-scheme /) x y))
|
||
|
|
(define (= x y) ((structure-ref true-scheme =) x y))
|
||
|
|
(define (< x y) ((structure-ref true-scheme <) x y))
|
||
|
|
(define (make-vector x y) ((structure-ref true-scheme make-vector) x y))
|
||
|
|
(define (make-string x y) ((structure-ref true-scheme make-string) x y))
|
||
|
|
(define (apply x y) ((structure-ref true-scheme apply) x y))
|
||
|
|
|
||
|
|
(define (read-char x) ((structure-ref true-scheme read-char) x))
|
||
|
|
(define (peek-char x) ((structure-ref true-scheme peek-char) x))
|
||
|
|
(define (char-ready? x) ((structure-ref true-scheme char-ready?) x))
|
||
|
|
(define (write-char x y) ((structure-ref true-scheme write-char) x y))
|