Added masking stuff.

Basically, so that we can hold user modes and channel modes in the same list, we use bitwise masking.
We have a list of handlers, 256 in size 0 through 255, and to work out where a mode handler is dependent
on WHAT it is, we use this simple hashing algorithm (no collisions can occur):
(modeletter - 65) | mask
Where mask is 128 (10000000b) if its a user mode, or 0 (00000000b, duh) if its a channel mode.
Smart, and much faster than using a map of pairs.


git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@4128 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 9 insertions, 2 deletions

diff --git a/include/mode.h b/include/mode.h
index f0efdf1d2..1c30d26e1 100644
--- a/include/mode.h
+++ b/include/mode.h
@@ -45,6 +45,11 @@ enum ModeAction {
 	MODEACTION_ALLOW = 1 /* Allow the mode */
 };
 
+enum ModeMasks {
+	MASK_USER = 128,	/* A user mode */
+	MASK_CHANNEL = 0	/* A channel mode */
+};
+
 class ModeHandler
 {
 	char mode;
@@ -93,12 +98,14 @@ class ModeParser
 	/**
 	 * Mode handlers for each mode, to access a handler subtract
 	 * 65 from the ascii value of the mode letter.
+	 * The upper bit of the value indicates if its a usermode
+	 * or a channel mode, so we have 255 of them not 64.
 	 */
-	ModeHandler* modehandlers[64];
+	ModeHandler* modehandlers[256];
 	/**
 	 * Mode watcher classes
 	 */
-	std::vector<ModeWatcher*> modewatchers[64];
+	std::vector<ModeWatcher*> modewatchers[256];
 	
 	char* GiveOps(userrec *user,char *dest,chanrec *chan,int status);
 	char* GiveHops(userrec *user,char *dest,chanrec *chan,int status);