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, 13 deletions

diff --git a/nexgb/damage/damage.go b/nexgb/damage/damage.go
index a3ba928..f9aee61 100644
--- a/nexgb/damage/damage.go
+++ b/nexgb/damage/damage.go
@@ -2,7 +2,7 @@
 package damage
 
 /*
-	This file was generated by damage.xml on May 11 2012 1:58:35am EDT.
+	This file was generated by damage.xml on May 11 2012 11:57:19pm EDT.
 	This file is automatically generated. Edit at your peril!
 */
 
@@ -41,18 +41,6 @@ func init() {
 	xgb.NewExtErrorFuncs["DAMAGE"] = make(map[int]xgb.NewErrorFun)
 }
 
-// Skipping definition for base type 'Card16'
-
-// Skipping definition for base type 'Char'
-
-// Skipping definition for base type 'Card32'
-
-// Skipping definition for base type 'Double'
-
-// Skipping definition for base type 'Bool'
-
-// Skipping definition for base type 'Float'
-
 // Skipping definition for base type 'Card8'
 
 // Skipping definition for base type 'Int16'
@@ -65,6 +53,18 @@ func init() {
 
 // Skipping definition for base type 'Int8'
 
+// Skipping definition for base type 'Card16'
+
+// Skipping definition for base type 'Char'
+
+// Skipping definition for base type 'Card32'
+
+// Skipping definition for base type 'Double'
+
+// Skipping definition for base type 'Bool'
+
+// Skipping definition for base type 'Float'
+
 const (
 	ReportLevelRawRectangles   = 0
 	ReportLevelDeltaRectangles = 1
@@ -238,6 +238,9 @@ 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 uint32, ClientMinorVersion uint32) QueryVersionCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryVersionRequest(c, ClientMajorVersion, ClientMinorVersion), cookie)
 	return QueryVersionCookie{cookie}
@@ -246,6 +249,9 @@ func QueryVersion(c *xgb.Conn, ClientMajorVersion uint32, ClientMinorVersion uin
 // 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 uint32, ClientMinorVersion uint32) QueryVersionCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryVersionRequest(c, ClientMajorVersion, ClientMinorVersion), cookie)
 	return QueryVersionCookie{cookie}
@@ -330,6 +336,9 @@ type CreateCookie struct {
 // Create sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func Create(c *xgb.Conn, Damage Damage, Drawable xproto.Drawable, Level byte) CreateCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Create' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createRequest(c, Damage, Drawable, Level), cookie)
 	return CreateCookie{cookie}
@@ -338,6 +347,9 @@ func Create(c *xgb.Conn, Damage Damage, Drawable xproto.Drawable, Level byte) Cr
 // CreateChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreateCookie.Check()
 func CreateChecked(c *xgb.Conn, Damage Damage, Drawable xproto.Drawable, Level byte) CreateCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Create' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createRequest(c, Damage, Drawable, Level), cookie)
 	return CreateCookie{cookie}
@@ -387,6 +399,9 @@ type DestroyCookie struct {
 // Destroy sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func Destroy(c *xgb.Conn, Damage Damage) DestroyCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Destroy' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroyRequest(c, Damage), cookie)
 	return DestroyCookie{cookie}
@@ -395,6 +410,9 @@ func Destroy(c *xgb.Conn, Damage Damage) DestroyCookie {
 // DestroyChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroyCookie.Check()
 func DestroyChecked(c *xgb.Conn, Damage Damage) DestroyCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Destroy' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroyRequest(c, Damage), cookie)
 	return DestroyCookie{cookie}
@@ -436,6 +454,9 @@ type SubtractCookie struct {
 // Subtract sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func Subtract(c *xgb.Conn, Damage Damage, Repair xfixes.Region, Parts xfixes.Region) SubtractCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Subtract' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(subtractRequest(c, Damage, Repair, Parts), cookie)
 	return SubtractCookie{cookie}
@@ -444,6 +465,9 @@ func Subtract(c *xgb.Conn, Damage Damage, Repair xfixes.Region, Parts xfixes.Reg
 // SubtractChecked sends a checked request.
 // If an error occurs, it can be retrieved using SubtractCookie.Check()
 func SubtractChecked(c *xgb.Conn, Damage Damage, Repair xfixes.Region, Parts xfixes.Region) SubtractCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Subtract' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(subtractRequest(c, Damage, Repair, Parts), cookie)
 	return SubtractCookie{cookie}
@@ -491,6 +515,9 @@ type AddCookie struct {
 // Add sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func Add(c *xgb.Conn, Drawable xproto.Drawable, Region xfixes.Region) AddCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Add' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(addRequest(c, Drawable, Region), cookie)
 	return AddCookie{cookie}
@@ -499,6 +526,9 @@ func Add(c *xgb.Conn, Drawable xproto.Drawable, Region xfixes.Region) AddCookie
 // AddChecked sends a checked request.
 // If an error occurs, it can be retrieved using AddCookie.Check()
 func AddChecked(c *xgb.Conn, Drawable xproto.Drawable, Region xfixes.Region) AddCookie {
+	if _, ok := c.Extensions["DAMAGE"]; !ok {
+		panic("Cannot issue request 'Add' using the uninitialized extension 'DAMAGE'. damage.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(addRequest(c, Drawable, Region), cookie)
 	return AddCookie{cookie}