-;;; cobbled from stuff in describe.lisp.
-(defun function-doc (x)
- (let ((name
- (case (get-type x)
- (#.sb!vm:closure-header-type
- (%function-name (%closure-function x)))
- ((#.sb!vm:function-header-type #.sb!vm:closure-function-header-type)
- (%function-name x))
- (#.sb!vm:funcallable-instance-header-type
- (%function-name
- (funcallable-instance-function x))))))
- (when (and name (typep name '(or symbol cons)))
- (values (info :function :documentation name)))))
-
-(defvar *features* '#.sb-cold:*shebang-features*
+;;; Underlying SIMPLE-FUN
+(defun %fun-fun (function)
+ (declare (function function))
+ (typecase function
+ (simple-fun
+ function)
+ (closure
+ (%closure-fun function))
+ (funcallable-instance
+ (%fun-fun (funcallable-instance-fun function)))))
+
+(defun %fun-lambda-list (function)
+ (typecase function
+ #!+sb-eval
+ (sb!eval:interpreted-function
+ (sb!eval:interpreted-function-debug-lambda-list function))
+ (t
+ (%simple-fun-arglist (%fun-fun function)))))
+
+(defun (setf %fun-lambda-list) (new-value function)
+ (typecase function
+ #!+sb-eval
+ (sb!eval:interpreted-function
+ (setf (sb!eval:interpreted-function-debug-lambda-list function) new-value))
+ ;; FIXME: Eliding general funcallable-instances for now.
+ ((or simple-fun closure)
+ (setf (%simple-fun-arglist (%fun-fun function)) new-value)))
+ new-value)
+
+(defun %fun-type (function)
+ (%simple-fun-type (%fun-fun function)))
+
+;;; a SETFable function to return the associated debug name for FUN
+;;; (i.e., the third value returned from CL:FUNCTION-LAMBDA-EXPRESSION),
+;;; or NIL if there's none
+(defun %fun-name (function)
+ (typecase function
+ #!+sb-eval
+ (sb!eval:interpreted-function
+ (sb!eval:interpreted-function-debug-name function))
+ (t
+ (%simple-fun-name (%fun-fun function)))))
+
+(defun (setf %fun-name) (new-value function)
+ (typecase function
+ #!+sb-eval
+ (sb!eval:interpreted-function
+ (setf (sb!eval:interpreted-function-debug-name function) new-value))
+ ;; FIXME: Eliding general funcallable-instances for now.
+ ((or simple-fun closure)
+ (setf (%simple-fun-name (%fun-fun function)) new-value)))
+ new-value)
+
+(defun %fun-doc (function)
+ (typecase function
+ #!+sb-eval
+ (sb!eval:interpreted-function
+ (sb!eval:interpreted-function-documentation function))
+ (t
+ (%simple-fun-doc (%fun-fun function)))))
+
+(defun (setf %fun-doc) (new-value function)
+ (declare (type (or null string) new-value))
+ (typecase function
+ #!+sb-eval
+ (sb!eval:interpreted-function
+ (setf (sb!eval:interpreted-function-documentation function) new-value))
+ ((or simple-fun closure)
+ (setf (%simple-fun-doc (%fun-fun function)) new-value)))
+ new-value)
+\f
+;;; various environment inquiries
+
+(defvar *features*
+ '#.(sort (copy-list sb-cold:*shebang-features*) #'string<)