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authorBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:29 -0800
committerBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:29 -0800
commit8466d8cfa486fb30d1755c4261b781135083787b (patch)
treec8c12c67246f543c3cc4f64d1c07e003cb1d45ae /break.scm
parent87b82b5822ca54228cfa6df29be3ad9d4bc47d16 (diff)
downloadslib-8466d8cfa486fb30d1755c4261b781135083787b.tar.gz
slib-8466d8cfa486fb30d1755c4261b781135083787b.zip
Import Upstream version 3a1upstream/3a1
Diffstat (limited to 'break.scm')
-rw-r--r--break.scm29
1 files changed, 12 insertions, 17 deletions
diff --git a/break.scm b/break.scm
index 4d18efc..d62eeb6 100644
--- a/break.scm
+++ b/break.scm
@@ -1,5 +1,5 @@
;;;; "break.scm" Breakpoints for debugging in Scheme.
-;;; Copyright (C) 1991, 1992, 1993, 1995 Aubrey Jaffer
+;;; Copyright (C) 1991, 1992, 1993, 1995, 2003 Aubrey Jaffer
;
;Permission to copy this software, to modify it, to redistribute it,
;to distribute modified versions, and to use it for any purpose is
@@ -8,7 +8,7 @@
;1. Any copy made of this software must include this copyright notice
;in full.
;
-;2. I have made no warrantee or representation that the operation of
+;2. I have made no warranty or representation that the operation of
;this software will be error-free, and I am under no obligation to
;provide any services, by way of maintenance, update, or otherwise.
;
@@ -18,6 +18,7 @@
;each case.
(require 'qp)
+(require 'alist)
;;;; BREAKPOINTS
@@ -29,8 +30,8 @@
;;; of breakpoint:continuation-stack and returns #f to it.
(define breakpoint:continuation-stack '())
-
-(define debug:breakpoint
+;@
+(define breakpoint
(let ((call-with-current-continuation call-with-current-continuation)
(apply apply) (qpn qpn)
(cons cons) (length length))
@@ -45,8 +46,8 @@
(debug:top-continuation
(length breakpoint:continuation-stack))))))
(cond ((not (eq? ans breakpoint:continuation-stack)) ans))))))
-
-(define debug:continue
+;@
+(define continue
(let ((null? null?) (car car) (cdr cdr))
(lambda args
(cond ((null? breakpoint:continuation-stack)
@@ -63,21 +64,17 @@
(if (provided? 'abort)
(lambda (val) (display val) (newline) (abort))
(begin (display "; type (init-debug)") #f)))
-
+;@
(define (init-debug)
(call-with-current-continuation
(lambda (x) (set! debug:top-continuation x))))
-
-(define breakpoint debug:breakpoint)
-(define bkpt debug:breakpoint)
-(define continue debug:continue)
-
+;@
(define breakf
(let ((null? null?) ;These bindings are so that
(not not) ;breakf will not break on parts
(car car) (cdr cdr) ;of itself.
(eq? eq?) (+ +) (zero? zero?) (modulo modulo)
- (apply apply) (display display) (breakpoint debug:breakpoint))
+ (apply apply) (display display) (breakpoint breakpoint))
(lambda (function . optname)
;; (set! trace:indent 0)
(let ((name (if (null? optname) function (car optname))))
@@ -92,7 +89,7 @@
;;; the reason I use a symbol for debug:unbreak-object is so
;;; that functions can still be unbreaked if this file is read in twice.
-
+;@
(define (unbreakf function)
;; (set! trace:indent 0)
(function 'debug:unbreak-object))
@@ -101,7 +98,6 @@
;;; niceties like keeping track of breakd functions and dealing with
;;; redefinition.
-(require 'alist)
(define break:adder (alist-associator eq?))
(define break:deler (alist-remover eq?))
@@ -131,9 +127,8 @@
((eq? (cdr p) fun)
(unbreakf fun))
(else fun))))
-
;;;; Finally, the macros break and unbreak
-
+;@
(defmacro break xs
(if (null? xs)
`(begin ,@(map (lambda (x) `(set! ,x (break:breakf ,x ',x)))