我用泥调试我Common Lisp的功能未绑定变量。在函数内部,我将它人为地发出错误信号(试图“调试” -perhaps我应该踩着),像这样:评估表达式仅产生
(define-condition unknown-zone (error)
((text :initarg :text :reader text)))
(defun parse-mime-date (date)
(let ((last-space (position #\Space date :from-end t)))
(let ((date-time (net.telent.date:parse-time (subseq date 0 last-space)))
(zone (subseq date (1+ last-space))))
(unless (or (char= (elt zone 0) #\+)
(char= (elt zone 0) #\-))
(error 'unknown-zone :text (format nil "Unknown timezone: ~a" zone)))
(let ((hours (parse-integer (subseq zone 0 3)))
(minutes (parse-integer
(concatenate 'string
(list (elt zone 0))
(subseq zone 3)))))
(error 'unknown-zone :text "LOL")
(let ((adjusted-date-time (- date-time (* 60 (+ minutes (* 60 hours))))))
(format t "date-time: ~a; zone: ~a~%" date-time zone)
(format t "adjusted: ~a" (net.telent.date:universal-time-to-http-date adjusted-date-time)))))))
我试图解决这似乎是在缺乏net.telent.date:parse-time
(它似乎弄乱了时区处理,但我还不是100%)。
的“LOL” unknown-zone
错误当然是人造的断点。
当它击中了这部分功能,SLDB忠实地开辟了回溯:
Bad type argument:
NS-MAIL2ZD::UNKNOWN-ZONE
[Condition of type SIMPLE-TYPE-ERROR]
Restarts:
0: [RETRY] Retry SLIME REPL evaluation request.
1: [*ABORT] Return to SLIME's top level.
2: [REMOVE-FD-HANDLER] Remove #<SB-IMPL::HANDLER INPUT on descriptor 7: #<CLOSURE (LABELS SWANK-BACKEND::RUN :IN SWANK-BACKEND:ADD-FD-HANDLER) {10030AD9FB}>>
3: [ABORT] Exit debugger, returning to top level.
Backtrace:
0: (MAKE-CONDITION NS-MAIL2ZD::UNKNOWN-ZONE :TEXT "LOL")
1: (ERROR NS-MAIL2ZD::UNKNOWN-ZONE :TEXT "LOL")
2: (NS-MAIL2ZD:PARSE-MIME-DATE "Wed, 14 Mar 2012 06:59:36 +1100")
3: (SB-INT:SIMPLE-EVAL-IN-LEXENV (NS-MAIL2ZD:PARSE-MIME-DATE *LOL*) #<NULL-LEXENV>)
4: (EVAL (NS-MAIL2ZD:PARSE-MIME-DATE *LOL*))
--more--
然后我向下翻页到框架:
Backtrace:
0: (MAKE-CONDITION NS-MAIL2ZD::UNKNOWN-ZONE :TEXT "LOL")
1: (ERROR NS-MAIL2ZD::UNKNOWN-ZONE :TEXT "LOL")
Locals:
SB-KERNEL::ARGUMENTS = (:TEXT "LOL")
SB-KERNEL::DATUM = NS-MAIL2ZD::UNKNOWN-ZONE
2: (NS-MAIL2ZD:PARSE-MIME-DATE "Wed, 14 Mar 2012 06:59:36 +1100")
现在我打Ë到调用sldb-eval-in-frame
和类型last-space
,因为在应用错误信号时应该可以使用它。
看来这不是它的意思是如何工作的(?):
The variable LAST-SPACE is unbound.
[Condition of type UNBOUND-VARIABLE]
Restarts:
0: [ABORT] Return to sldb level 1.
1: [RETRY] Retry SLIME REPL evaluation request.
2: [*ABORT] Return to SLIME's top level.
3: [REMOVE-FD-HANDLER] Remove #<SB-IMPL::HANDLER INPUT on descriptor 7: #<CLOSURE (LABELS SWANK-BACKEND::RUN :IN SWANK-BACKEND:ADD-FD-HANDLER) {10030AD9FB}>>
4: [ABORT] Exit debugger, returning to top level.
Backtrace:
0: ((LAMBDA (#:G1144)) #<unavailable argument>)
--more--
有没有办法做我想要什么?我是否过度复杂?
谢谢!
附录:我使用(break)
(这似乎是一点点更规范)试过,但我仍然无法看到let
结合的变量与ê。 :<
在试图评估调试器中的东西时使用'package :: symbol-name'的另一种方法是使用'in-package'在REPL中选择相关的包。 – 2012-03-13 08:53:58
谢谢! '(声明(优化调试))'是我错过的咒语。之后,所有当地人都列在“t”列表中(可通过“e”访问)。我也刚刚了解到'package :: not-necessary-exported-symbol'语法 - 谢谢! – Ashe 2012-03-13 10:43:11
您也可以使用'C-u'' C-c'' C-k'来编译最大的调试设置。 – Daimrod 2012-03-13 10:43:58