Updated events.nim to use TEventEmitter instead of PEventEmitter.

lib/pure/events.nim

@@ -16,43 +16,42 @@
 type
   TEventArgs* = object of TObject ## Base object for event arguments
                                   ## that are passed to callback functions.
-  TEventHandler = tuple[name: string, handlers: seq[proc(e:TEventArgs)]]
-  PEventHandler* = ref TEventHandler ## An eventhandler for an event.
+  TEventHandler* = tuple[name: string, handlers: seq[proc(e:TEventArgs)]]
+  #PEventHandler* = ref TEventHandler ## An eventhandler for an event.
 
 type
-  TEventEmitter = object {.pure, final.}
-    s: seq[PEventHandler]
-  PEventEmitter* = ref TEventEmitter ## An object that fires events and 
-                                     ## holds event handlers for an object.
+  TEventEmitter* = object {.pure, final.}
+    s: seq[TEventHandler]
+  #PEventEmitter* = ref TEventEmitter ## An object that fires events and holds event handlers for an object.
   EInvalidEvent* = object of EInvalidValue
     
-proc newEventHandler*(name: string): PEventHandler =
+proc newEventHandler*(name: string): TEventHandler =
   ## Initializes an EventHandler with the specified name and returns it.
-  new(result)
+  #new(result)
   result.handlers = @[]
   result.name = name
 
-proc addHandler*(handler: PEventHandler, func: proc(e: TEventArgs)) =
+proc addHandler*(handler: var TEventHandler, func: proc(e: TEventArgs)) =
   ## Adds the callback to the specified event handler.
   handler.handlers.add(func)
 
-proc removeHandler*(handler: PEventHandler, func: proc(e: TEventArgs)) =
+proc removeHandler*(handler: var TEventHandler, func: proc(e: TEventArgs)) =
   ## Removes the callback from the specified event handler.
   for i in countup(0, len(handler.handlers) -1):
     if func == handler.handlers[i]:
       handler.handlers.del(i)
       break
     
-proc clearHandlers*(handler: PEventHandler) =
+proc clearHandlers*(handler: var TEventHandler) =
   ## Clears all of the callbacks from the event handler.
   setLen(handler.handlers, 0)
 
-proc getEventhandler(emitter: PEventEmitter, event: string): int =
+proc getEventhandler(emitter: var TEventEmitter, event: string): int =
   for k in 0..high(emitter.s):
     if emitter.s[k].name == event: return k
   return -1
 
-proc on*(emitter: PEventEmitter, event: string, func: proc(e: TEventArgs)) =
+proc on*(emitter: var TEventEmitter, event: string, func: proc(e: TEventArgs)) =
   ## Assigns a event handler with the specified callback. If the event
   ## doesn't exist, it will be created.
   var i = getEventHandler(emitter, event)
@@ -63,12 +62,12 @@ proc on*(emitter: PEventEmitter, event: string, func: proc(e: TEventArgs)) =
   else:
     addHandler(emitter.s[i], func)
   
-proc emit*(emitter: PEventEmitter, eventhandler: PEventHandler, 
+proc emit*(emitter: var TEventEmitter, eventhandler: var TEventHandler, 
            args: TEventArgs) =
   ## Fires an event handler with specified event arguments.
   for func in items(eventhandler.handlers): func(args)
 
-proc emit*(emitter: PEventEmitter, event: string, args: TEventArgs) =
+proc emit*(emitter: var TEventEmitter, event: string, args: TEventArgs) =
   ## Fires an event handler with specified event arguments.
   var i = getEventHandler(emitter, event)
   if i >= 0:
@@ -76,8 +75,9 @@ proc emit*(emitter: PEventEmitter, event: string, args: TEventArgs) =
   else:
     raise newException(EInvalidEvent, "invalid event: " & event)
 
-proc newEventEmitter*(): PEventEmitter =
+proc newEventEmitter*(): TEventEmitter =
   ## Creates and returns a new EventEmitter.
-  new(result)
+  #new(result)
+  var result : TEventEmitter
   result.s = @[]
-
+  return result

tests/accept/run/tevents.nim

@@ -34,7 +34,7 @@ ee.emit("print", eventargs)
 
 type
   TSomeObject = object of TObject
-    PrintEvent: PEventHandler
+    PrintEvent: TEventHandler
 
 var obj: TSomeObject
 obj.PrintEvent = newEventHandler("print")