panic when an extension request is issued before an extension has been initialized. but give a nice error message for the happy people.

1 files changed, 43 insertions, 7 deletions

diff --git a/nexgb/xinerama/xinerama.go b/nexgb/xinerama/xinerama.go
index b03a381..51b270a 100644
--- a/nexgb/xinerama/xinerama.go
+++ b/nexgb/xinerama/xinerama.go
@@ -2,7 +2,7 @@
 package xinerama
 
 /*
-	This file was generated by xinerama.xml on May 11 2012 1:58:36am EDT.
+	This file was generated by xinerama.xml on May 11 2012 11:57:20pm EDT.
 	This file is automatically generated. Edit at your peril!
 */
 
@@ -40,6 +40,12 @@ func init() {
 	xgb.NewExtErrorFuncs["XINERAMA"] = make(map[int]xgb.NewErrorFun)
 }
 
+// Skipping definition for base type 'Int32'
+
+// Skipping definition for base type 'Void'
+
+// Skipping definition for base type 'Byte'
+
 // Skipping definition for base type 'Int8'
 
 // Skipping definition for base type 'Card16'
@@ -58,12 +64,6 @@ func init() {
 
 // Skipping definition for base type 'Int16'
 
-// Skipping definition for base type 'Int32'
-
-// Skipping definition for base type 'Void'
-
-// Skipping definition for base type 'Byte'
-
 type ScreenInfo struct {
 	XOrg   int16
 	YOrg   int16
@@ -140,6 +140,9 @@ type QueryVersionCookie struct {
 // QueryVersion sends a checked request.
 // If an error occurs, it will be returned with the reply by calling QueryVersionCookie.Reply()
 func QueryVersion(c *xgb.Conn, Major byte, Minor byte) QueryVersionCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryVersionRequest(c, Major, Minor), cookie)
 	return QueryVersionCookie{cookie}
@@ -148,6 +151,9 @@ func QueryVersion(c *xgb.Conn, Major byte, Minor byte) QueryVersionCookie {
 // QueryVersionUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func QueryVersionUnchecked(c *xgb.Conn, Major byte, Minor byte) QueryVersionCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryVersionRequest(c, Major, Minor), cookie)
 	return QueryVersionCookie{cookie}
@@ -229,6 +235,9 @@ type GetStateCookie struct {
 // GetState sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetStateCookie.Reply()
 func GetState(c *xgb.Conn, Window xproto.Window) GetStateCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'GetState' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getStateRequest(c, Window), cookie)
 	return GetStateCookie{cookie}
@@ -237,6 +246,9 @@ func GetState(c *xgb.Conn, Window xproto.Window) GetStateCookie {
 // GetStateUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetStateUnchecked(c *xgb.Conn, Window xproto.Window) GetStateCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'GetState' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getStateRequest(c, Window), cookie)
 	return GetStateCookie{cookie}
@@ -312,6 +324,9 @@ type GetScreenCountCookie struct {
 // GetScreenCount sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetScreenCountCookie.Reply()
 func GetScreenCount(c *xgb.Conn, Window xproto.Window) GetScreenCountCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'GetScreenCount' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getScreenCountRequest(c, Window), cookie)
 	return GetScreenCountCookie{cookie}
@@ -320,6 +335,9 @@ func GetScreenCount(c *xgb.Conn, Window xproto.Window) GetScreenCountCookie {
 // GetScreenCountUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetScreenCountUnchecked(c *xgb.Conn, Window xproto.Window) GetScreenCountCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'GetScreenCount' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getScreenCountRequest(c, Window), cookie)
 	return GetScreenCountCookie{cookie}
@@ -395,6 +413,9 @@ type GetScreenSizeCookie struct {
 // GetScreenSize sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetScreenSizeCookie.Reply()
 func GetScreenSize(c *xgb.Conn, Window xproto.Window, Screen uint32) GetScreenSizeCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'GetScreenSize' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getScreenSizeRequest(c, Window, Screen), cookie)
 	return GetScreenSizeCookie{cookie}
@@ -403,6 +424,9 @@ func GetScreenSize(c *xgb.Conn, Window xproto.Window, Screen uint32) GetScreenSi
 // GetScreenSizeUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetScreenSizeUnchecked(c *xgb.Conn, Window xproto.Window, Screen uint32) GetScreenSizeCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'GetScreenSize' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getScreenSizeRequest(c, Window, Screen), cookie)
 	return GetScreenSizeCookie{cookie}
@@ -492,6 +516,9 @@ type IsActiveCookie struct {
 // IsActive sends a checked request.
 // If an error occurs, it will be returned with the reply by calling IsActiveCookie.Reply()
 func IsActive(c *xgb.Conn) IsActiveCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'IsActive' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(isActiveRequest(c), cookie)
 	return IsActiveCookie{cookie}
@@ -500,6 +527,9 @@ func IsActive(c *xgb.Conn) IsActiveCookie {
 // IsActiveUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func IsActiveUnchecked(c *xgb.Conn) IsActiveCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'IsActive' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(isActiveRequest(c), cookie)
 	return IsActiveCookie{cookie}
@@ -571,6 +601,9 @@ type QueryScreensCookie struct {
 // QueryScreens sends a checked request.
 // If an error occurs, it will be returned with the reply by calling QueryScreensCookie.Reply()
 func QueryScreens(c *xgb.Conn) QueryScreensCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'QueryScreens' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryScreensRequest(c), cookie)
 	return QueryScreensCookie{cookie}
@@ -579,6 +612,9 @@ func QueryScreens(c *xgb.Conn) QueryScreensCookie {
 // QueryScreensUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func QueryScreensUnchecked(c *xgb.Conn) QueryScreensCookie {
+	if _, ok := c.Extensions["XINERAMA"]; !ok {
+		panic("Cannot issue request 'QueryScreens' using the uninitialized extension 'XINERAMA'. xinerama.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryScreensRequest(c), cookie)
 	return QueryScreensCookie{cookie}