Add a cache for gradle output

1 files changed, 18 insertions, 0 deletions

diff --git a/flycheck-android-experimental.el b/flycheck-android-experimental.el
index 00e0a4e..181b056 100644
--- a/flycheck-android-experimental.el
+++ b/flycheck-android-experimental.el
@@ -11,10 +11,14 @@
 
 (require 'flycheck)
 
+(defvar flycheck-android-sessiondir nil
+  "Session directory used for caching.")
+
 (flycheck-define-checker android-java
   "Java syntax checker using javac."
   :command ("python"
             (eval (flycheck-android-find-tool "java"))
+            (eval (flycheck-android-get-sessiondir))
             (eval buffer-file-name)
             source)
   :error-patterns
@@ -37,6 +41,20 @@ TOOL=name of tool"
      (concat (file-name-directory (symbol-file 'flycheck-android-find-tool))
              (file-name-as-directory "bin")))))
 
+(defun flycheck-android-remove-sessiondir ()
+  "Delete session dir if it exists and unsets the variable."
+  (when flycheck-android-sessiondir
+    (delete-directory flycheck-android-sessiondir t)
+    (setq flycheck-android-sessiondir nil)))
+
+(defun flycheck-android-get-sessiondir ()
+  "Return sessiondir if already set otherwise create and set it."
+  (or flycheck-android-sessiondir
+      (progn
+        (add-hook 'kill-emacs-hook 'flycheck-android-remove-sessiondir)
+        (setq flycheck-android-sessiondir
+              (make-temp-file "flycheck-android" t)))))
+
 (add-to-list 'flycheck-checkers 'android-java)
 
 (provide 'flycheck-android-experimental)