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, 29 insertions, 5 deletions

diff --git a/nexgb/xtest/xtest.go b/nexgb/xtest/xtest.go
index 8f964e4..3fab056 100644
--- a/nexgb/xtest/xtest.go
+++ b/nexgb/xtest/xtest.go
@@ -2,7 +2,7 @@
 package xtest
 
 /*
-	This file was generated by xtest.xml on May 11 2012 1:58:37am EDT.
+	This file was generated by xtest.xml on May 11 2012 11:57:20pm EDT.
 	This file is automatically generated. Edit at your peril!
 */
 
@@ -40,10 +40,6 @@ func init() {
 	xgb.NewExtErrorFuncs["XTEST"] = make(map[int]xgb.NewErrorFun)
 }
 
-// Skipping definition for base type 'Card8'
-
-// Skipping definition for base type 'Int16'
-
 // Skipping definition for base type 'Int32'
 
 // Skipping definition for base type 'Void'
@@ -64,6 +60,10 @@ func init() {
 
 // Skipping definition for base type 'Float'
 
+// Skipping definition for base type 'Card8'
+
+// Skipping definition for base type 'Int16'
+
 const (
 	CursorNone    = 0
 	CursorCurrent = 1
@@ -77,6 +77,9 @@ type GetVersionCookie struct {
 // GetVersion sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetVersionCookie.Reply()
 func GetVersion(c *xgb.Conn, MajorVersion byte, MinorVersion uint16) GetVersionCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'GetVersion' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getVersionRequest(c, MajorVersion, MinorVersion), cookie)
 	return GetVersionCookie{cookie}
@@ -85,6 +88,9 @@ func GetVersion(c *xgb.Conn, MajorVersion byte, MinorVersion uint16) GetVersionC
 // GetVersionUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetVersionUnchecked(c *xgb.Conn, MajorVersion byte, MinorVersion uint16) GetVersionCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'GetVersion' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getVersionRequest(c, MajorVersion, MinorVersion), cookie)
 	return GetVersionCookie{cookie}
@@ -165,6 +171,9 @@ type CompareCursorCookie struct {
 // CompareCursor sends a checked request.
 // If an error occurs, it will be returned with the reply by calling CompareCursorCookie.Reply()
 func CompareCursor(c *xgb.Conn, Window xproto.Window, Cursor xproto.Cursor) CompareCursorCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'CompareCursor' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(compareCursorRequest(c, Window, Cursor), cookie)
 	return CompareCursorCookie{cookie}
@@ -173,6 +182,9 @@ func CompareCursor(c *xgb.Conn, Window xproto.Window, Cursor xproto.Cursor) Comp
 // CompareCursorUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CompareCursorUnchecked(c *xgb.Conn, Window xproto.Window, Cursor xproto.Cursor) CompareCursorCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'CompareCursor' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(compareCursorRequest(c, Window, Cursor), cookie)
 	return CompareCursorCookie{cookie}
@@ -251,6 +263,9 @@ type FakeInputCookie struct {
 // FakeInput sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func FakeInput(c *xgb.Conn, Type byte, Detail byte, Time uint32, Root xproto.Window, RootX int16, RootY int16, Deviceid byte) FakeInputCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'FakeInput' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(fakeInputRequest(c, Type, Detail, Time, Root, RootX, RootY, Deviceid), cookie)
 	return FakeInputCookie{cookie}
@@ -259,6 +274,9 @@ func FakeInput(c *xgb.Conn, Type byte, Detail byte, Time uint32, Root xproto.Win
 // FakeInputChecked sends a checked request.
 // If an error occurs, it can be retrieved using FakeInputCookie.Check()
 func FakeInputChecked(c *xgb.Conn, Type byte, Detail byte, Time uint32, Root xproto.Window, RootX int16, RootY int16, Deviceid byte) FakeInputCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'FakeInput' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(fakeInputRequest(c, Type, Detail, Time, Root, RootX, RootY, Deviceid), cookie)
 	return FakeInputCookie{cookie}
@@ -324,6 +342,9 @@ type GrabControlCookie struct {
 // GrabControl sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GrabControl(c *xgb.Conn, Impervious bool) GrabControlCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'GrabControl' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(grabControlRequest(c, Impervious), cookie)
 	return GrabControlCookie{cookie}
@@ -332,6 +353,9 @@ func GrabControl(c *xgb.Conn, Impervious bool) GrabControlCookie {
 // GrabControlChecked sends a checked request.
 // If an error occurs, it can be retrieved using GrabControlCookie.Check()
 func GrabControlChecked(c *xgb.Conn, Impervious bool) GrabControlCookie {
+	if _, ok := c.Extensions["XTEST"]; !ok {
+		panic("Cannot issue request 'GrabControl' using the uninitialized extension 'XTEST'. xtest.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(grabControlRequest(c, Impervious), cookie)
 	return GrabControlCookie{cookie}