diff options
Diffstat (limited to 'src/guile/skribilo/debug.scm')
| -rw-r--r-- | src/guile/skribilo/debug.scm | 55 |
1 files changed, 38 insertions, 17 deletions
diff --git a/src/guile/skribilo/debug.scm b/src/guile/skribilo/debug.scm index d9d54bd..c54a0d9 100644 --- a/src/guile/skribilo/debug.scm +++ b/src/guile/skribilo/debug.scm @@ -1,6 +1,6 @@ ;;; debug.scm -- Debugging facilities. -*- coding: iso-8859-1 -*- ;;; -;;; Copyright 2005, 2006, 2009 Ludovic Courtès <ludo@gnu.org> +;;; Copyright 2005, 2006, 2009, 2012 Ludovic Courtès <ludo@gnu.org> ;;; Copyright 2003, 2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr> ;;; ;;; This program is free software; you can redistribute it and/or modify @@ -102,18 +102,25 @@ ;;; ;;; debug-item ;;; -(define-macro (debug-item . args) - `(if (*debug-item?*) (%do-debug-item ,@args))) -(define-public (%do-debug-item . args) +(define (%do-debug-item . args) (begin (display (*debug-margin*) (*debug-port*)) (display (debug-color (- (*debug-depth*) 1) "- ") (*debug-port*)) (for-each (lambda (a) (display a (*debug-port*))) args) (newline (*debug-port*)))) -;;(define-macro (debug-item . args) -;; `()) +(cond-expand + (guile-2 + (define-syntax-rule (debug-item args ...) + (if (*debug-item?*) + (%do-debug-item args ...)))) + (else + (begin + ;; Work around Guile 1.8's broken macro support. + (export %do-debug-item) + (define-macro (debug-item . args) + `(if (*debug-item?*) (%do-debug-item ,@args)))))) ;;; @@ -127,7 +134,7 @@ ;;; ;;; %with-debug ;;; -(define-public (%do-with-debug lvl lbl thunk) +(define (%do-with-debug lvl lbl thunk) (parameterize ((*margin-level* lvl) (*debug-item?* #t)) (display (*debug-margin*) (*debug-port*)) @@ -139,16 +146,30 @@ (%with-debug-margin (debug-color (*debug-depth*) " |") thunk))) -(define-macro (with-debug level label . body) - ;; We have this as a macro in order to avoid procedure calls in the - ;; non-debugging case. Unfortunately, the macro below duplicates BODY, - ;; which has a negative impact on memory usage and startup time (XXX). - (if (number? level) - `(if (or (>= (*debug*) ,level) - (memq ,label (*watched-symbols*))) - (%do-with-debug ,level ,label (lambda () ,@body)) - (begin ,@body)) - (error "with-debug: syntax error"))) +;; We have this as a macro in order to avoid procedure calls in the +;; non-debugging case. Unfortunately, the macro below duplicates BODY, +;; which has a negative impact on memory usage and startup time (XXX). +(cond-expand + (guile-2 + (define-syntax with-debug + (lambda (s) + (syntax-case s () + ((_ level label body ...) + (integer? (syntax->datum #'level)) + #'(if (or (>= (*debug*) level) + (memq label (*watched-symbols*))) + (%do-with-debug level label (lambda () body ...)) + (begin body ...))))))) + (else + (begin + (export %do-with-debug) + (define-macro (with-debug level label . body) + (if (number? level) + `(if (or (>= (*debug*) ,level) + (memq ,label (*watched-symbols*))) + (%do-with-debug ,level ,label (lambda () ,@body)) + (begin ,@body)) + (error "with-debug: syntax error")))))) ; Example: |