diff options
| author | Matthias Benkard <code@mail.matthias.benkard.de> | 2007-09-17 23:29:58 +0200 |
|---|---|---|
| committer | Matthias Benkard <code@mail.matthias.benkard.de> | 2007-09-17 23:29:58 +0200 |
| commit | f98c79811e81eff07f967f28c108b76a4a7d1343 (patch) | |
| tree | 9ad511a4309f00306e0f4bea95001c85578b0868 /Lisp/internal-utilities.lisp | |
| parent | 909b52ce5a0c7a9beca639b830f5f57380af64ff (diff) | |
INVOKE-WITH-CONVERSION: Support classes as message receivers.
darcs-hash:f27d973190d6ada1ef35ab041229d1c0b88ee11c
Diffstat (limited to 'Lisp/internal-utilities.lisp')
| -rw-r--r-- | Lisp/internal-utilities.lisp | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/Lisp/internal-utilities.lisp b/Lisp/internal-utilities.lisp index 4e9d481..13d4e47 100644 --- a/Lisp/internal-utilities.lisp +++ b/Lisp/internal-utilities.lisp @@ -90,14 +90,21 @@ collector." (let ((hash-table (gensym)) (value (gensym)) (default-value (gensym)) - (hash-key (gensym))) - `(let ((,hash-table (tg:make-weak-hash-table :weakness :key - :test 'equal))) - (defun ,name ,lambda-list - (let* ((,hash-key ,hashing-form) - (,value (gethash ,hash-key ,hash-table ',default-value))) - (if (eq ',default-value ,value) - (values-list - (setf (gethash ,hash-key ,hash-table) - (multiple-value-list (progn ,@body)))) - (values-list ,value))))))) + (hash-key (gensym)) + (no-weak-hashing-p (handler-case + (prog1 nil + (tg:make-weak-hash-table :weakness :key + :test 'equal)) + (serious-condition () t)))) + (if no-weak-hashing-p + `(defun ,name ,lambda-list ,@body) + `(let ((,hash-table (tg:make-weak-hash-table :weakness :key + :test 'equal))) + (defun ,name ,lambda-list + (let* ((,hash-key ,hashing-form) + (,value (gethash ,hash-key ,hash-table ',default-value))) + (if (eq ',default-value ,value) + (values-list + (setf (gethash ,hash-key ,hash-table) + (multiple-value-list (progn ,@body)))) + (values-list ,value)))))))) |