Add preprocess method to storage, removing nearly all duplication

1 files changed, 18 insertions, 0 deletions

diff --git a/inc/storage.h b/inc/storage.h
index 972e24a..1bf5805 100644
--- a/inc/storage.h
+++ b/inc/storage.h
@@ -3,6 +3,7 @@
 #include "definitions.h"
 #include <algorithm>
 #include <array>
+#include <functional>
 #include <map>
 #include <vector>
 
@@ -48,6 +49,23 @@ class Storage
 
   protected:
 	/**
+	 * Helper for all access methods.
+	 * Calls `request_handler` when `id` is allowed to complete its
+	 * request cycle.
+	 * May include extra checks depending on storage device.
+	 * @param the source making the request
+	 * @param the address to write to
+	 * @param the function to call when an access should be completed
+	 */
+	virtual int
+	process(void *id, int address, std::function<void(int index, int offset)> request_handler) = 0;
+	/**
+	 * Helper for process. Given `id`, returns 0 if the request should trivially be ignored.
+	 * @param the source making the request
+	 * @return 0 if the request should not be completed, 1 if it should be evaluated further.
+	 */
+	int preprocess(void *id);
+	/**
 	 * Returns OK if `id` should complete its request this cycle. In the case it can, automatically
 	 * clears the current requester.
 	 * @param the id asking for a resource