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(system repl debug): add frame->stack-vector

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* module/system/repl/debug.scm (frame->stack-vector): New public
  function.
This commit is contained in:
Andy Wingo 2010-10-05 21:49:13 +02:00
parent 2c04cf390b
commit 586aff5a27
1 changed files with 17 additions and 1 deletions
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18
module/system/repl/debug.scm
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@ -32,7 +32,8 @@
#:export (<debug>
make-debug debug? debug-frames debug-index debug-error-message
print-registers print-locals print-frame print-frames frame->module
stack->vector narrow-stack->vector))
stack->vector narrow-stack->vector
frame->stack-vector))
;; TODO:
;;
@ -181,6 +182,21 @@
(stack->vector narrowed)
#()))) ; ? Can be the case for a tail-call to `throw' tho
(define (frame->stack-vector frame)
(let ((tag (and (pair? (fluid-ref %stacks))
(cdar (fluid-ref %stacks)))))
(narrow-stack->vector
(make-stack frame)
;; Take the stack from the given frame, cutting 0
;; frames.
0
;; Narrow the end of the stack to the most recent
;; start-stack.
tag
;; And one more frame, because %start-stack
;; invoking the start-stack thunk has its own frame
;; too.
0 (and tag 1))))
;; (define (debug)
;; (run-debugger