(when error-if-not-found?
(error 'graph-vertex-not-found-error :vertex value :graph graph))))
-;;; ---------------------------------------------------------------------------
+(defmethod find-vertex ((graph basic-graph) (vertex basic-vertex)
+ &optional (error-if-not-found? t))
+ (cond ((eq graph (graph vertex))
+ vertex)
+ (t
+ (when error-if-not-found?
+ (error 'graph-vertex-not-found-error
+ :vertex vertex :graph graph)))))
(defmethod find-vertex ((edge basic-edge) (value t)
&optional (error-if-not-found? t))
(when error-if-not-found?
(error 'graph-vertex-not-found-in-edge-error :vertex value :edge edge)))
-;;; ---------------------------------------------------------------------------
-
-(defmethod search-for-vertex ((graph basic-graph) (value t)
- &key (key (vertex-key graph)) (test 'equal)
- (error-if-not-found? t))
- (aif (search-for-node graph value :test test :key key)
- it
- (when error-if-not-found?
- (error "~S not found in ~A using key ~S and test ~S" value graph key
- test))))
-
-;;; ---------------------------------------------------------------------------
(defmethod search-for-vertex ((graph basic-graph) (vertex basic-vertex)
&key (key (vertex-key graph)) (test 'equal)
(when error-if-not-found?
(error "~A not found in ~A" vertex graph))))
-;;; ---------------------------------------------------------------------------
-;; TODO !!! dispatch is the same as the second method above
(defmethod search-for-vertex ((graph basic-graph) (vertex t)
&key (key (vertex-key graph)) (test 'equal)
(error-if-not-found? t))
(when error-if-not-found?
(error "~A not found in ~A" vertex graph))))
-;;; ---------------------------------------------------------------------------
-
(defmethod iterate-elements ((graph basic-graph) fn)
(iterate-elements (graph-vertexes graph)
(lambda (vertex) (funcall fn (element vertex)))))