# HG changeset patch
# User Thomas Harning Jr <harningt@gmail.com>
# Date 1181705351 0
# Node ID b134613f6303b10a18662c32147de40a40c5e03e
# Parent  e13f7c9cb6c716196e222f4d7226f11d3df8505a
Performed some refactoring...

diff -r e13f7c9cb6c7 -r b134613f6303 luaevent/src/luaevent.c
--- a/luaevent/src/luaevent.c	Wed Jun 13 02:13:18 2007 +0000
+++ b/luaevent/src/luaevent.c	Wed Jun 13 03:29:11 2007 +0000
@@ -10,7 +10,7 @@
 #define EVENT_CALLBACK_ARG_MT "EVENT_CALLBACK_ARG_MT"
 #define EVENT_BASE_LOCATION 1
 
-void setEventBase(lua_State* L, struct event_base* base) {
+static void setEventBase(lua_State* L, struct event_base* base) {
 	struct event_base** pbase = lua_newuserdata(L, sizeof(base));
 	*pbase = base;
 	luaL_getmetatable(L, EVENT_BASE_MT);
@@ -25,7 +25,7 @@
 	return base;
 }
 
-void freeCallbackArgs(le_callback* arg) {
+static void freeCallbackArgs(le_callback* arg) {
 	if(arg->L) {
 		lua_State* L = arg->L;
 		arg->L = NULL;
@@ -33,6 +33,36 @@
 		luaL_unref(L, LUA_REGISTRYINDEX, arg->callbackRef);
 	}
 }
+
+static int call_callback_function(lua_State* L, int argCount) {
+	int ret;
+	if(lua_pcall(L, argCount, 1, 0) || !(lua_isnil(L, -1) || lua_isnumber(L, -1))) {
+		printf("ERROR IN INIT: %s\n", lua_tostring(L, -1));
+		lua_pop(L, 1);
+		return 0;
+	}
+	/* Lua_isnil returns 1 if the value is nil... */
+	ret = lua_tointeger(L, -1) | -lua_isnil(L, -1);
+	lua_pop(L, 1);
+	if(ret < 0) { /* Done, no need to setup event */
+		return 0;
+	}
+	if(ret != EV_READ && ret != EV_WRITE) {
+		printf("BAD RET_VAL IN INIT: %i\n", ret);
+	}
+	return 1;
+}
+
+static void luaevent_callback(int fd, short event, void* p);
+
+static void setup_event(le_callback* arg, int fd, short event, int resetEvent) {
+	/* Setup event... */
+	if(resetEvent) event_del(&arg->ev);
+	event_set(&arg->ev, fd, event| EV_PERSIST, luaevent_callback, arg);
+	if(!resetEvent) event_base_set(getEventBase(arg->L), &arg->ev);
+	event_add(&arg->ev, NULL);
+}
+
 /* le_callback is allocated at the beginning of the coroutine in which it
 is used, no need to manually de-allocate */
 
@@ -43,29 +73,15 @@
 	int ret;
 	lua_rawgeti(L, LUA_REGISTRYINDEX, arg->callbackRef);
 	lua_pushinteger(L, event);
-	if(lua_pcall(L, 1, 1, 0) || !(lua_isnil(L, -1) || lua_isnumber(L, -1))) {
-		printf("ERROR IN CB: %s\n", lua_tostring(L, -1));
-		lua_pop(L, 1);
-		freeCallbackArgs(arg);
-		return;
-	}
-	ret = lua_tointeger(L, -1) | -1lua_isnil(L, -1);
-	lua_pop(L, 1);
-	if(ret < 0) {
+	
+	if(0 == call_callback_function(L, 1)) {
 		freeCallbackArgs(arg);
 		return;
 	}
-	if(ret != EV_READ && ret != EV_WRITE) {
-		printf("BAD RET_VAL: %i\n", ret);
-	}
+	
 	printf("RET VAL: %i\n", ret);
-	struct event *ev = &arg->ev;
-	int newEvent = ret;
-	if(newEvent != event) { // Need to hook up new event...
-		event_del(ev);
-		event_set(ev, fd, EV_PERSIST | newEvent, luaevent_callback, arg);
-		event_add(ev, NULL);
-	}
+	if(event != ret)
+		setup_event(arg, fd, ret, 1);
 }
 
 static int luaevent_base_gc(lua_State* L) {
@@ -89,7 +105,7 @@
 	return 1;
 }
 
-int getSocketFd(lua_State* L, int idx) {
+static int getSocketFd(lua_State* L, int idx) {
 	int fd;
 	luaL_checktype(L, idx, LUA_TUSERDATA);
 	lua_getfield(L, idx, "getfd");
@@ -102,6 +118,16 @@
 	return fd;
 }
 
+static void push_new_callback(lua_State* L, int callbackRef, int fd, short event) {
+	le_callback* arg = lua_newuserdata(L, sizeof(*arg));
+	luaL_getmetatable(L, EVENT_CALLBACK_ARG_MT);
+	lua_setmetatable(L, -2);
+	
+	arg->L = L;
+	arg->callbackRef = callbackRef;
+	
+	setup_event(arg, fd, event, 0);
+}
 /* Expected to be called at the beginning of the coro that uses it.. 
 Value must be kept until coro is complete....
 */
@@ -109,41 +135,19 @@
 static int luaevent_addevent(lua_State* L) {
 	int fd, callbackRef;
 	int top, ret;
-	le_callback* arg;
 	fd = getSocketFd(L, 1);
 	luaL_checktype(L, 2, LUA_TFUNCTION);
 	top = lua_gettop(L);
 	/* Preserve the callback function */
 	lua_pushvalue(L, 2);
 	callbackRef = luaL_ref(L, LUA_REGISTRYINDEX);
-	
 	/* Call the callback with all arguments after it to get the loop primed.. */
-	if(lua_pcall(L, top - 2, 1, 0) || !(lua_isnil(L, -1) || lua_isnumber(L, -1))) {
-		printf("ERROR IN INIT: %s\n", lua_tostring(L, -1));
-		lua_pop(L, 1);
-		return 0;
-	}
-	/* Lua_isnil returns 1 if the value is nil... */
-	ret = lua_tointeger(L, -1) | -lua_isnil(L, -1);
-	lua_pop(L, 1);
-	if(ret < 0) { /* Done, no need to setup event */
+	if(0 == call_callback_function(L, top - 2)) {
 		luaL_unref(L, LUA_REGISTRYINDEX, callbackRef);
 		return 0;
 	}
-	if(ret != EV_READ && ret != EV_WRITE) {
-		printf("BAD RET_VAL IN INIT: %i\n", ret);
-	}
-	arg = lua_newuserdata(L, sizeof(*arg));
-	luaL_getmetatable(L, EVENT_CALLBACK_ARG_MT);
-	lua_setmetatable(L, -2);
 	
-	arg->L = L;
-	arg->callbackRef = callbackRef;
-	
-	/* Setup event... */
-	event_set(&arg->ev, fd, ret | EV_PERSIST, luaevent_callback, arg);
-	event_base_set(getEventBase(L), &arg->ev);
-	event_add(&arg->ev, NULL);
+	push_new_callback(L, callbackRef, fd, ret);
 	return 1;
 }