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, 65 insertions, 11 deletions

diff --git a/nexgb/xvmc/xvmc.go b/nexgb/xvmc/xvmc.go
index cf794cc..19b1c83 100644
--- a/nexgb/xvmc/xvmc.go
+++ b/nexgb/xvmc/xvmc.go
@@ -2,7 +2,7 @@
 package xvmc
 
 /*
-	This file was generated by xvmc.xml on May 11 2012 1:58:37am EDT.
+	This file was generated by xvmc.xml on May 11 2012 11:57:20pm EDT.
 	This file is automatically generated. Edit at your peril!
 */
 
@@ -41,6 +41,16 @@ func init() {
 	xgb.NewExtErrorFuncs["XVideo-MotionCompensation"] = 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'
+
+// Skipping definition for base type 'Byte'
+
 // Skipping definition for base type 'Int8'
 
 // Skipping definition for base type 'Card16'
@@ -55,16 +65,6 @@ func init() {
 
 // Skipping definition for base type 'Float'
 
-// Skipping definition for base type 'Card8'
-
-// 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 Context uint32
 
 func NewContextId(c *xgb.Conn) (Context, error) {
@@ -206,6 +206,9 @@ 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) QueryVersionCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryVersionRequest(c), cookie)
 	return QueryVersionCookie{cookie}
@@ -214,6 +217,9 @@ func QueryVersion(c *xgb.Conn) 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) QueryVersionCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryVersionRequest(c), cookie)
 	return QueryVersionCookie{cookie}
@@ -289,6 +295,9 @@ type ListSurfaceTypesCookie struct {
 // ListSurfaceTypes sends a checked request.
 // If an error occurs, it will be returned with the reply by calling ListSurfaceTypesCookie.Reply()
 func ListSurfaceTypes(c *xgb.Conn, PortId xv.Port) ListSurfaceTypesCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'ListSurfaceTypes' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(listSurfaceTypesRequest(c, PortId), cookie)
 	return ListSurfaceTypesCookie{cookie}
@@ -297,6 +306,9 @@ func ListSurfaceTypes(c *xgb.Conn, PortId xv.Port) ListSurfaceTypesCookie {
 // ListSurfaceTypesUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func ListSurfaceTypesUnchecked(c *xgb.Conn, PortId xv.Port) ListSurfaceTypesCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'ListSurfaceTypes' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(listSurfaceTypesRequest(c, PortId), cookie)
 	return ListSurfaceTypesCookie{cookie}
@@ -378,6 +390,9 @@ type CreateContextCookie struct {
 // CreateContext sends a checked request.
 // If an error occurs, it will be returned with the reply by calling CreateContextCookie.Reply()
 func CreateContext(c *xgb.Conn, ContextId Context, PortId xv.Port, SurfaceId Surface, Width uint16, Height uint16, Flags uint32) CreateContextCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'CreateContext' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(createContextRequest(c, ContextId, PortId, SurfaceId, Width, Height, Flags), cookie)
 	return CreateContextCookie{cookie}
@@ -386,6 +401,9 @@ func CreateContext(c *xgb.Conn, ContextId Context, PortId xv.Port, SurfaceId Sur
 // CreateContextUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateContextUnchecked(c *xgb.Conn, ContextId Context, PortId xv.Port, SurfaceId Surface, Width uint16, Height uint16, Flags uint32) CreateContextCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'CreateContext' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(createContextRequest(c, ContextId, PortId, SurfaceId, Width, Height, Flags), cookie)
 	return CreateContextCookie{cookie}
@@ -494,6 +512,9 @@ type DestroyContextCookie struct {
 // DestroyContext sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DestroyContext(c *xgb.Conn, ContextId Context) DestroyContextCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'DestroyContext' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroyContextRequest(c, ContextId), cookie)
 	return DestroyContextCookie{cookie}
@@ -502,6 +523,9 @@ func DestroyContext(c *xgb.Conn, ContextId Context) DestroyContextCookie {
 // DestroyContextChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroyContextCookie.Check()
 func DestroyContextChecked(c *xgb.Conn, ContextId Context) DestroyContextCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'DestroyContext' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroyContextRequest(c, ContextId), cookie)
 	return DestroyContextCookie{cookie}
@@ -543,6 +567,9 @@ type CreateSurfaceCookie struct {
 // CreateSurface sends a checked request.
 // If an error occurs, it will be returned with the reply by calling CreateSurfaceCookie.Reply()
 func CreateSurface(c *xgb.Conn, SurfaceId Surface, ContextId Context) CreateSurfaceCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'CreateSurface' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(createSurfaceRequest(c, SurfaceId, ContextId), cookie)
 	return CreateSurfaceCookie{cookie}
@@ -551,6 +578,9 @@ func CreateSurface(c *xgb.Conn, SurfaceId Surface, ContextId Context) CreateSurf
 // CreateSurfaceUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateSurfaceUnchecked(c *xgb.Conn, SurfaceId Surface, ContextId Context) CreateSurfaceCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'CreateSurface' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(createSurfaceRequest(c, SurfaceId, ContextId), cookie)
 	return CreateSurfaceCookie{cookie}
@@ -635,6 +665,9 @@ type DestroySurfaceCookie struct {
 // DestroySurface sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DestroySurface(c *xgb.Conn, SurfaceId Surface) DestroySurfaceCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'DestroySurface' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroySurfaceRequest(c, SurfaceId), cookie)
 	return DestroySurfaceCookie{cookie}
@@ -643,6 +676,9 @@ func DestroySurface(c *xgb.Conn, SurfaceId Surface) DestroySurfaceCookie {
 // DestroySurfaceChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroySurfaceCookie.Check()
 func DestroySurfaceChecked(c *xgb.Conn, SurfaceId Surface) DestroySurfaceCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'DestroySurface' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroySurfaceRequest(c, SurfaceId), cookie)
 	return DestroySurfaceCookie{cookie}
@@ -684,6 +720,9 @@ type CreateSubpictureCookie struct {
 // CreateSubpicture sends a checked request.
 // If an error occurs, it will be returned with the reply by calling CreateSubpictureCookie.Reply()
 func CreateSubpicture(c *xgb.Conn, SubpictureId Subpicture, Context Context, XvimageId uint32, Width uint16, Height uint16) CreateSubpictureCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'CreateSubpicture' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(createSubpictureRequest(c, SubpictureId, Context, XvimageId, Width, Height), cookie)
 	return CreateSubpictureCookie{cookie}
@@ -692,6 +731,9 @@ func CreateSubpicture(c *xgb.Conn, SubpictureId Subpicture, Context Context, Xvi
 // CreateSubpictureUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateSubpictureUnchecked(c *xgb.Conn, SubpictureId Subpicture, Context Context, XvimageId uint32, Width uint16, Height uint16) CreateSubpictureCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'CreateSubpicture' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(createSubpictureRequest(c, SubpictureId, Context, XvimageId, Width, Height), cookie)
 	return CreateSubpictureCookie{cookie}
@@ -806,6 +848,9 @@ type DestroySubpictureCookie struct {
 // DestroySubpicture sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DestroySubpicture(c *xgb.Conn, SubpictureId Subpicture) DestroySubpictureCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'DestroySubpicture' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroySubpictureRequest(c, SubpictureId), cookie)
 	return DestroySubpictureCookie{cookie}
@@ -814,6 +859,9 @@ func DestroySubpicture(c *xgb.Conn, SubpictureId Subpicture) DestroySubpictureCo
 // DestroySubpictureChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroySubpictureCookie.Check()
 func DestroySubpictureChecked(c *xgb.Conn, SubpictureId Subpicture) DestroySubpictureCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'DestroySubpicture' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroySubpictureRequest(c, SubpictureId), cookie)
 	return DestroySubpictureCookie{cookie}
@@ -855,6 +903,9 @@ type ListSubpictureTypesCookie struct {
 // ListSubpictureTypes sends a checked request.
 // If an error occurs, it will be returned with the reply by calling ListSubpictureTypesCookie.Reply()
 func ListSubpictureTypes(c *xgb.Conn, PortId xv.Port, SurfaceId Surface) ListSubpictureTypesCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'ListSubpictureTypes' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(listSubpictureTypesRequest(c, PortId, SurfaceId), cookie)
 	return ListSubpictureTypesCookie{cookie}
@@ -863,6 +914,9 @@ func ListSubpictureTypes(c *xgb.Conn, PortId xv.Port, SurfaceId Surface) ListSub
 // ListSubpictureTypesUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func ListSubpictureTypesUnchecked(c *xgb.Conn, PortId xv.Port, SurfaceId Surface) ListSubpictureTypesCookie {
+	if _, ok := c.Extensions["XVIDEO-MOTIONCOMPENSATION"]; !ok {
+		panic("Cannot issue request 'ListSubpictureTypes' using the uninitialized extension 'XVideo-MotionCompensation'. xvmc.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(listSubpictureTypesRequest(c, PortId, SurfaceId), cookie)
 	return ListSubpictureTypesCookie{cookie}