-
Notifications
You must be signed in to change notification settings - Fork 144
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
8 changed files
with
138 additions
and
1,665 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| (in-package "SI") | ||
|
|
||
| (defun search-print-circle (object) | ||
| (multiple-value-bind | ||
| (code present-p) | ||
| (gethash object *circle-stack*) | ||
| (if (not (fixnump *circle-counter*)) | ||
| (cond ((not present-p) | ||
| ;; Was not found before | ||
| (setf (gethash object *circle-stack*) nil) | ||
| 0) | ||
| ((null code) | ||
| ;; Second reference | ||
| (setf (gethash object *circle-stack*) t) | ||
| 1) | ||
| (t | ||
| ;; Further references | ||
| 2)) | ||
| (cond ((or (not present-p) (null code)) | ||
| ;; Is not referenced or was not found before | ||
| 0) | ||
| ((eql code t) | ||
| ;; Reference twice but had no code yet | ||
| (incf *circle-counter*) | ||
| (setf (gethash object *circle-stack*) | ||
| *circle-counter*) | ||
| (- *circle-counter*)) | ||
| (t code))))) | ||
|
|
||
| (defun write-object-with-circle (object stream function) | ||
| (if (and *print-circle* | ||
| (not (null object)) | ||
| (not (fixnump object)) | ||
| (not (characterp object)) | ||
| (or (not (symbolp object)) (null (symbol-package object)))) | ||
| ;;; *print-circle* and an object that might have a circle | ||
| (if (null *circle-counter*) | ||
| (let* ((hash (make-hash-table :test 'eq | ||
| :size 1024)) | ||
| (*circle-counter* t) | ||
| (*circle-stack* hash)) | ||
| (write-object-with-circle object (make-broadcast-stream) function) | ||
| (setf *circle-counter* 0) | ||
| (write-object-with-circle object stream function) | ||
| (clrhash hash) | ||
| object) | ||
| (let ((code (search-print-circle object))) | ||
| (cond ((not (fixnump *circle-counter*)) | ||
| ;; We are only inspecting the object to be printed. | ||
| ;; Only print X if it was not referenced before | ||
| (if (not (zerop code)) | ||
| object | ||
| (funcall function object stream))) | ||
| ((zerop code) | ||
| ;; Object is not referenced twice | ||
| (funcall function object stream)) | ||
| ((minusp code) | ||
| ;; Object is referenced twice. We print its definition | ||
| (write-char #\# stream) | ||
| (let ((*print-radix* nil) | ||
| (*print-base* 10)) | ||
| (write-ugly-object (- code) stream)) | ||
| (write-char #\= stream) | ||
| (funcall function object stream)) | ||
| (t | ||
| ;; Second reference to the object | ||
| (write-char #\# stream) | ||
| (let ((*print-radix* nil) | ||
| (*print-base* 10)) | ||
| (write-ugly-object code stream)) | ||
| (write-char #\# stream) | ||
| object)))) | ||
| ;;; live is good, print simple | ||
| (funcall function object stream))) |
Oops, something went wrong.