1 files changed, 35 insertions, 0 deletions
diff --git a/elpa/req-package-20180605.1141/req-package-cycles.el b/elpa/req-package-20180605.1141/req-package-cycles.el
new file mode 100644
index 0000000..73d982e
--- /dev/null
+++ b/elpa/req-package-20180605.1141/req-package-cycles.el
@@ -0,0 +1,35 @@
+;;; req-package-cycles.el --- summary:
+;;; commentary:
+;;; code:
+
+(require 'dash)
+
+(defvar req-package-cycles-count 0
+  "Number of cycles detected.")
+
+(defun req-package-cycles-detect-traverse-impl (graph visited cur path)
+  "Traverse for cycles look up implementation"
+  (puthash cur t visited)
+  (if (not (-contains? path cur))
+      (-each (gethash cur graph nil)
+        (lambda (dependent)
+          (req-package-cycles-detect-traverse-impl graph visited dependent (cons cur path))))
+    (progn (setq req-package-cycles-count (+ req-package-cycles-count 1))
+           (req-package--log-error "cycle detected: %s" (cons cur path)))))
+
+(defun req-package-cycles-detect-traverse (graph visited)
+  "Traverse for cycles look up"
+  (maphash (lambda (key value)
+             (if (null (gethash key visited nil))
+                 (req-package-cycles-detect-traverse-impl graph visited key nil)))
+           graph)
+  (if (not (eq 0 req-package-cycles-count))
+      (message "%s cycle(s) detected. see M-x req-package--log-open-log"
+               req-package-cycles-count)))
+
+(defun req-package-cycles-detect (graph)
+  (setq req-package-cycles-count 0)
+  (req-package-cycles-detect-traverse graph (make-hash-table :size 200)))
+
+(provide 'req-package-cycles)
+;;; req-package-cycles ends here