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/screensaver/screensaver.go b/nexgb/screensaver/screensaver.go
index 932e753..a06d8a6 100644
--- a/nexgb/screensaver/screensaver.go
+++ b/nexgb/screensaver/screensaver.go
@@ -2,7 +2,7 @@
 package screensaver
 
 /*
-	This file was generated by screensaver.xml on May 11 2012 1:58:36am EDT.
+	This file was generated by screensaver.xml on May 11 2012 11:57:19pm EDT.
 	This file is automatically generated. Edit at your peril!
 */
 
@@ -40,12 +40,6 @@ func init() {
 	xgb.NewExtErrorFuncs["MIT-SCREEN-SAVER"] = make(map[int]xgb.NewErrorFun)
 }
 
-// Skipping definition for base type 'Int16'
-
-// Skipping definition for base type 'Int32'
-
-// Skipping definition for base type 'Void'
-
 // Skipping definition for base type 'Byte'
 
 // Skipping definition for base type 'Int8'
@@ -64,6 +58,12 @@ func init() {
 
 // Skipping definition for base type 'Card8'
 
+// Skipping definition for base type 'Int16'
+
+// Skipping definition for base type 'Int32'
+
+// Skipping definition for base type 'Void'
+
 const (
 	KindBlanked  = 0
 	KindInternal = 1
@@ -222,6 +222,9 @@ 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, ClientMajorVersion byte, ClientMinorVersion byte) QueryVersionCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryVersionRequest(c, ClientMajorVersion, ClientMinorVersion), cookie)
 	return QueryVersionCookie{cookie}
@@ -230,6 +233,9 @@ func QueryVersion(c *xgb.Conn, ClientMajorVersion byte, ClientMinorVersion byte)
 // 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, ClientMajorVersion byte, ClientMinorVersion byte) QueryVersionCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryVersionRequest(c, ClientMajorVersion, ClientMinorVersion), cookie)
 	return QueryVersionCookie{cookie}
@@ -316,6 +322,9 @@ type QueryInfoCookie struct {
 // QueryInfo sends a checked request.
 // If an error occurs, it will be returned with the reply by calling QueryInfoCookie.Reply()
 func QueryInfo(c *xgb.Conn, Drawable xproto.Drawable) QueryInfoCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'QueryInfo' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryInfoRequest(c, Drawable), cookie)
 	return QueryInfoCookie{cookie}
@@ -324,6 +333,9 @@ func QueryInfo(c *xgb.Conn, Drawable xproto.Drawable) QueryInfoCookie {
 // QueryInfoUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func QueryInfoUnchecked(c *xgb.Conn, Drawable xproto.Drawable) QueryInfoCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'QueryInfo' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryInfoRequest(c, Drawable), cookie)
 	return QueryInfoCookie{cookie}
@@ -418,6 +430,9 @@ type SelectInputCookie struct {
 // SelectInput sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func SelectInput(c *xgb.Conn, Drawable xproto.Drawable, EventMask uint32) SelectInputCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'SelectInput' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(selectInputRequest(c, Drawable, EventMask), cookie)
 	return SelectInputCookie{cookie}
@@ -426,6 +441,9 @@ func SelectInput(c *xgb.Conn, Drawable xproto.Drawable, EventMask uint32) Select
 // SelectInputChecked sends a checked request.
 // If an error occurs, it can be retrieved using SelectInputCookie.Check()
 func SelectInputChecked(c *xgb.Conn, Drawable xproto.Drawable, EventMask uint32) SelectInputCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'SelectInput' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(selectInputRequest(c, Drawable, EventMask), cookie)
 	return SelectInputCookie{cookie}
@@ -470,6 +488,9 @@ type SetAttributesCookie struct {
 // SetAttributes sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func SetAttributes(c *xgb.Conn, Drawable xproto.Drawable, X int16, Y int16, Width uint16, Height uint16, BorderWidth uint16, Class byte, Depth byte, Visual xproto.Visualid, ValueMask uint32, ValueList []uint32) SetAttributesCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'SetAttributes' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(setAttributesRequest(c, Drawable, X, Y, Width, Height, BorderWidth, Class, Depth, Visual, ValueMask, ValueList), cookie)
 	return SetAttributesCookie{cookie}
@@ -478,6 +499,9 @@ func SetAttributes(c *xgb.Conn, Drawable xproto.Drawable, X int16, Y int16, Widt
 // SetAttributesChecked sends a checked request.
 // If an error occurs, it can be retrieved using SetAttributesCookie.Check()
 func SetAttributesChecked(c *xgb.Conn, Drawable xproto.Drawable, X int16, Y int16, Width uint16, Height uint16, BorderWidth uint16, Class byte, Depth byte, Visual xproto.Visualid, ValueMask uint32, ValueList []uint32) SetAttributesCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'SetAttributes' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(setAttributesRequest(c, Drawable, X, Y, Width, Height, BorderWidth, Class, Depth, Visual, ValueMask, ValueList), cookie)
 	return SetAttributesCookie{cookie}
@@ -551,6 +575,9 @@ type UnsetAttributesCookie struct {
 // UnsetAttributes sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func UnsetAttributes(c *xgb.Conn, Drawable xproto.Drawable) UnsetAttributesCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'UnsetAttributes' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(unsetAttributesRequest(c, Drawable), cookie)
 	return UnsetAttributesCookie{cookie}
@@ -559,6 +586,9 @@ func UnsetAttributes(c *xgb.Conn, Drawable xproto.Drawable) UnsetAttributesCooki
 // UnsetAttributesChecked sends a checked request.
 // If an error occurs, it can be retrieved using UnsetAttributesCookie.Check()
 func UnsetAttributesChecked(c *xgb.Conn, Drawable xproto.Drawable) UnsetAttributesCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'UnsetAttributes' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(unsetAttributesRequest(c, Drawable), cookie)
 	return UnsetAttributesCookie{cookie}
@@ -600,6 +630,9 @@ type SuspendCookie struct {
 // Suspend sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func Suspend(c *xgb.Conn, Suspend bool) SuspendCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'Suspend' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(suspendRequest(c, Suspend), cookie)
 	return SuspendCookie{cookie}
@@ -608,6 +641,9 @@ func Suspend(c *xgb.Conn, Suspend bool) SuspendCookie {
 // SuspendChecked sends a checked request.
 // If an error occurs, it can be retrieved using SuspendCookie.Check()
 func SuspendChecked(c *xgb.Conn, Suspend bool) SuspendCookie {
+	if _, ok := c.Extensions["MIT-SCREEN-SAVER"]; !ok {
+		panic("Cannot issue request 'Suspend' using the uninitialized extension 'MIT-SCREEN-SAVER'. screensaver.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(suspendRequest(c, Suspend), cookie)
 	return SuspendCookie{cookie}