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-rw-r--r--nexgb/xgbgen/context.go38
-rw-r--r--nexgb/xgbgen/go_error.go2
-rw-r--r--nexgb/xgbgen/go_event.go14
-rw-r--r--nexgb/xgbgen/go_request_reply.go8
-rw-r--r--nexgb/xgbgen/protocol.go2
-rw-r--r--nexgb/xgbgen/request_reply.go4
-rw-r--r--nexgb/xgbgen/translation.go2
7 files changed, 59 insertions, 11 deletions
diff --git a/nexgb/xgbgen/context.go b/nexgb/xgbgen/context.go
index d433531..35dd37e 100644
--- a/nexgb/xgbgen/context.go
+++ b/nexgb/xgbgen/context.go
@@ -5,6 +5,7 @@ import (
"encoding/xml"
"fmt"
"log"
+ "strings"
"time"
)
@@ -70,6 +71,43 @@ func (c *Context) Morph(xmlBytes []byte) {
c.Putln("")
}
+ // If this is an extension, create a function to initialize the extension
+ // before it can be used.
+ if c.protocol.isExt() {
+ name := strings.Title(c.protocol.Name) + "Init"
+ xname := c.protocol.ExtXName
+
+ c.Putln("// %s must be called before using the %s extension.",
+ name, xname)
+ c.Putln("func (c *Conn) %s() error {", name)
+ c.Putln("reply, err := c.QueryExtension(%d, \"%s\").Reply()",
+ len(xname), xname)
+ c.Putln("switch {")
+ c.Putln("case err != nil:")
+ c.Putln("return err")
+ c.Putln("case !reply.Present:")
+ c.Putln("return newError(\"No extension named %s could be found on " +
+ "on the server.\")", xname)
+ c.Putln("}")
+ c.Putln("")
+ c.Putln("c.extLock.Lock()")
+ c.Putln("c.extensions[\"%s\"] = reply.MajorOpcode", xname)
+ c.Putln("for evNum, fun := range newExtEventFuncs[\"%s\"] {", xname)
+ c.Putln("newEventFuncs[int(reply.FirstEvent) + evNum] = fun")
+ c.Putln("}")
+ c.Putln("c.extLock.Unlock()")
+ c.Putln("")
+ c.Putln("return nil")
+ c.Putln("}")
+ c.Putln("")
+
+ // Make sure newExtEventFuncs["EXT_NAME"] map is initialized.
+ c.Putln("func init() {")
+ c.Putln("newExtEventFuncs[\"%s\"] = make(map[int]newEventFun)", xname)
+ c.Putln("}")
+ c.Putln("")
+ }
+
// Now write Go source code
for _, typ := range c.protocol.Types {
typ.Define(c)
diff --git a/nexgb/xgbgen/go_error.go b/nexgb/xgbgen/go_error.go
index 152db8b..0222289 100644
--- a/nexgb/xgbgen/go_error.go
+++ b/nexgb/xgbgen/go_error.go
@@ -64,7 +64,7 @@ func (e *Error) ImplementsError(c *Context) {
c.Putln("}")
c.Putln("")
c.Putln("func (err %s) BadId() Id {", e.ErrType())
- if c.protocol.Name == "xproto" {
+ if !c.protocol.isExt() {
c.Putln("return Id(err.BadValue)")
} else {
c.Putln("return 0")
diff --git a/nexgb/xgbgen/go_event.go b/nexgb/xgbgen/go_event.go
index 9bc6dfe..ce54e19 100644
--- a/nexgb/xgbgen/go_event.go
+++ b/nexgb/xgbgen/go_event.go
@@ -47,7 +47,12 @@ func (e *Event) Define(c *Context) {
// Let's the XGB event loop read this event.
c.Putln("func init() {")
- c.Putln("newEventFuncs[%d] = New%s", e.Number, e.EvType())
+ if c.protocol.isExt() {
+ c.Putln("newExtEventFuncs[\"%s\"][%d] = New%s",
+ c.protocol.ExtXName, e.Number, e.EvType())
+ } else {
+ c.Putln("newEventFuncs[%d] = New%s", e.Number, e.EvType())
+ }
c.Putln("}")
c.Putln("")
}
@@ -130,7 +135,12 @@ func (e *EventCopy) Define(c *Context) {
// Let's the XGB event loop read this event.
c.Putln("func init() {")
- c.Putln("newEventFuncs[%d] = New%s", e.Number, e.EvType())
+ if c.protocol.isExt() {
+ c.Putln("newExtEventFuncs[\"%s\"][%d] = New%s",
+ c.protocol.ExtXName, e.Number, e.EvType())
+ } else {
+ c.Putln("newEventFuncs[%d] = New%s", e.Number, e.EvType())
+ }
c.Putln("}")
c.Putln("")
}
diff --git a/nexgb/xgbgen/go_request_reply.go b/nexgb/xgbgen/go_request_reply.go
index e64e2a2..451667f 100644
--- a/nexgb/xgbgen/go_request_reply.go
+++ b/nexgb/xgbgen/go_request_reply.go
@@ -118,7 +118,7 @@ func (r *Request) WriteRequest(c *Context) {
c.Putln("b := 0")
c.Putln("buf := make([]byte, size)")
c.Putln("")
- if strings.ToLower(c.protocol.Name) != "xproto" {
+ if c.protocol.isExt() {
c.Putln("buf[b] = c.extensions[\"%s\"]",
strings.ToUpper(c.protocol.ExtXName))
c.Putln("b += 1")
@@ -128,17 +128,17 @@ func (r *Request) WriteRequest(c *Context) {
c.Putln("b += 1")
c.Putln("")
if len(r.Fields) == 0 {
- if strings.ToLower(c.protocol.Name) == "xproto" {
+ if !c.protocol.isExt() {
c.Putln("b += 1 // padding")
}
writeSize()
- } else if strings.ToLower(c.protocol.Name) != "xproto" {
+ } else if c.protocol.isExt() {
writeSize()
}
for i, field := range r.Fields {
field.Write(c, "")
c.Putln("")
- if i == 0 && strings.ToLower(c.protocol.Name) == "xproto" {
+ if i == 0 && !c.protocol.isExt() {
writeSize()
}
}
diff --git a/nexgb/xgbgen/protocol.go b/nexgb/xgbgen/protocol.go
index 505b400..e01bc17 100644
--- a/nexgb/xgbgen/protocol.go
+++ b/nexgb/xgbgen/protocol.go
@@ -36,6 +36,6 @@ func (p *Protocol) Initialize() {
// isExt returns true if this protocol is an extension.
// i.e., it's name isn't "xproto".
func (p *Protocol) isExt() bool {
- return strings.ToLower(p.Name) == "xproto"
+ return strings.ToLower(p.Name) != "xproto"
}
diff --git a/nexgb/xgbgen/request_reply.go b/nexgb/xgbgen/request_reply.go
index 7cd2859..c7a4cf8 100644
--- a/nexgb/xgbgen/request_reply.go
+++ b/nexgb/xgbgen/request_reply.go
@@ -22,7 +22,7 @@ type Request struct {
// It also initializes the reply if one exists, and all fields in this request.
func (r *Request) Initialize(p *Protocol) {
r.srcName = SrcName(p, r.xmlName)
- if p.Name != "xproto" {
+ if p.isExt() {
r.srcName = strings.Title(strings.ToLower(p.Name)) + r.srcName
}
@@ -93,7 +93,7 @@ func (r *Request) Size(c *Context) Size {
// request. In an extension request, this byte is always occupied
// by the opcode of the request (while the first byte is always occupied
// by the opcode of the extension).
- if c.protocol.Name == "xproto" {
+ if !c.protocol.isExt() {
size = size.Add(newFixedSize(3))
} else {
size = size.Add(newFixedSize(4))
diff --git a/nexgb/xgbgen/translation.go b/nexgb/xgbgen/translation.go
index 90cd0f3..592c152 100644
--- a/nexgb/xgbgen/translation.go
+++ b/nexgb/xgbgen/translation.go
@@ -410,7 +410,7 @@ func TypeSrcName(p *Protocol, typ Type) string {
// Since there is no namespace, we need to look for a namespace
// in the current context.
niceType := splitAndTitle(t)
- if p.Name != "xproto" {
+ if p.isExt() {
for _, typ2 := range p.Types {
if t == typ2.XmlName() {
return strings.Title(p.Name) + niceType
generated by cgit v1.2.3-70-g09d2 (git 2.50.0) at 2025-10-31 06:36:12 +0000