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-rw-r--r--trace.scm24
1 files changed, 13 insertions, 11 deletions
diff --git a/trace.scm b/trace.scm
index aa2c3d7..a075c77 100644
--- a/trace.scm
+++ b/trace.scm
@@ -1,5 +1,5 @@
-;;;; "trace.scm" Utility macros for tracing in Scheme.
-;;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 1999, 2000 Aubrey Jaffer
+;;;; "trace.scm" Utility functions and macros for tracing in Scheme.
+;;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 1999, 2000, 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.
;
@@ -18,8 +18,11 @@
;each case.
(require 'qp) ;for the qp printer.
+(require 'alist)
+
(define trace:indent 0)
(define debug:call-stack '()) ;keeps track of call stack.
+;@
(define debug:max-count 5)
;;Formats for call-stack elements:
@@ -27,6 +30,7 @@
;; (procedure-count name) ;for debug:stack procedure
;;Traced functions also stack.
+;@
(define print-call-stack
(let ((car car) (null? null?) (current-error-port current-error-port)
(qpn qpn) (for-each for-each))
@@ -121,7 +125,7 @@
;;; The reason I use a symbol for debug:untrace-object is so that
;;; functions can still be untraced if this file is read in twice.
-
+;@
(define (untracef function)
(set! trace:indent 0)
(function 'debug:untrace-object))
@@ -130,7 +134,6 @@
;;; niceties like keeping track of traced functions and dealing with
;;; redefinition.
-(require 'alist)
(define trace:adder (alist-associator eq?))
(define trace:deler (alist-remover eq?))
@@ -190,13 +193,14 @@
(set! *stacked-procedures* (trace:deler *stacked-procedures* sym))
(finish p)))
(else fun)))
-
+;@
(define (tracef . args) (apply debug:trace-procedure 'trace args))
+;@
(define (trackf . args) (apply debug:trace-procedure 'track args))
+;@
(define (stackf . args) (apply debug:trace-procedure 'stack args))
-
;;;; Finally, the macros trace and untrace
-
+;@
(defmacro trace xs
(if (null? xs)
`(begin (set! trace:indent 0)
@@ -222,7 +226,7 @@
(map car *stacked-procedures*))
`(begin ,@(map (lambda (x)
`(set! ,x (trace:trace-procedure 'stack ,x ',x))) xs))))
-
+;@
(defmacro untrace xs
(if (null? xs)
(slib:eval
@@ -232,7 +236,6 @@
'',(map car *traced-procedures*)))
`(begin ,@(map (lambda (x)
`(set! ,x (trace:untrace-procedure ,x ',x))) xs))))
-
(defmacro untrack xs
(if (null? xs)
(slib:eval
@@ -242,7 +245,6 @@
'',(map car *tracked-procedures*)))
`(begin ,@(map (lambda (x)
`(set! ,x (track:untrack-procedure ,x ',x))) xs))))
-
(defmacro unstack xs
(if (null? xs)
(slib:eval