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converting to new reply/cookie scheme

This commit is contained in:
Andrew Gallant (Ocelot) 2012-05-05 02:55:38 -04:00
parent a5d4ad6c9d
commit c222d406b0
4 changed files with 122 additions and 28 deletions
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27
nexgb/xgbgen/expression.go
View File

@ -158,6 +158,33 @@ func (e *UnaryOp) Initialize(p *Protocol) {
e.Expr.Initialize(p)
}
type Padding struct {
Expr Expression
}
func (e *Padding) Concrete() bool {
return e.Expr.Concrete()
}
func (e *Padding) Eval() uint {
return uint(pad(int(e.Expr.Eval())))
}
func (e *Padding) Reduce(prefix string) string {
if e.Concrete() {
return fmt.Sprintf("%d", e.Eval())
}
return fmt.Sprintf("pad(%s)", e.Expr.Reduce(prefix))
}
func (e *Padding) String() string {
return e.Reduce("")
}
func (e *Padding) Initialize(p *Protocol) {
e.Expr.Initialize(p)
}
type PopCount struct {
Expr Expression
}

16
nexgb/xgbgen/go_event.go
View File

@ -28,6 +28,14 @@ func (e *Event) Define(c *Context) {
// Makes sure that this event type is an Event interface.
c.Putln("func (v %s) ImplementsEvent() { }", e.EvType())
c.Putln("")
c.Putln("func (v %s) SequenceId() uint16 {", e.EvType())
if e.NoSequence {
c.Putln("return uint16(0)")
} else {
c.Putln("return v.Sequence")
}
c.Putln("}")
c.Putln("")
// Let's the XGB event loop read this event.
c.Putln("func init() {")
@ -99,6 +107,14 @@ func (e *EventCopy) Define(c *Context) {
// Makes sure that this event type is an Event interface.
c.Putln("func (v %s) ImplementsEvent() { }", e.EvType())
c.Putln("")
c.Putln("func (v %s) SequenceId() uint16 {", e.EvType())
if e.Old.(*Event).NoSequence {
c.Putln("return uint16(0)")
} else {
c.Putln("return v.Sequence")
}
c.Putln("}")
c.Putln("")
// Let's the XGB event loop read this event.
c.Putln("func init() {")

84
nexgb/xgbgen/go_request_reply.go
View File

@ -8,30 +8,51 @@ import (
func (r *Request) Define(c *Context) {
c.Putln("// Request %s", r.SrcName())
c.Putln("// size: %s", r.Size(c))
c.Putln("type %s cookie", r.CookieName())
if r.Reply != nil {
c.Putln("func (c *Conn) %s(%s) (*%s, error) {",
r.SrcName(), r.ParamNameTypes(), r.ReplyName())
c.Putln("return c.%s(c.%s(%s))",
r.ReplyName(), r.ReqName(), r.ParamNames())
c.Putln("func (c *Conn) %s(%s) %s {",
r.SrcName(), r.ParamNameTypes(), r.CookieName())
c.Putln("cookie := c.newCookie(true, true)")
c.Putln("c.newRequest(%s(%s), cookie)", r.ReqName(), r.ParamNames())
c.Putln("return %s(cookie)", r.CookieName())
c.Putln("}")
c.Putln("")
c.Putln("func (c *Conn) %sUnchecked(%s) %s {",
r.SrcName(), r.ParamNameTypes(), r.CookieName())
c.Putln("cookie := c.newCookie(false, true)")
c.Putln("c.newRequest(%s(%s), cookie)", r.ReqName(), r.ParamNames())
c.Putln("return %s(cookie)", r.CookieName())
c.Putln("}")
c.Putln("")
r.WriteRequest(c)
r.ReadReply(c)
} else {
c.Putln("// Write request to wire for %s", r.SrcName())
c.Putln("func (c *Conn) %s(%s) {", r.SrcName(), r.ParamNameTypes())
r.WriteRequestFields(c)
c.Putln("c.sendRequest(false, buf)")
c.Putln("func (c *Conn) %s(%s) %s {",
r.SrcName(), r.ParamNameTypes(), r.CookieName())
c.Putln("cookie := c.newCookie(false, false)")
c.Putln("c.newRequest(%s(%s), cookie)", r.ReqName(), r.ParamNames())
c.Putln("return %s(cookie)", r.CookieName())
c.Putln("}")
c.Putln("")
c.Putln("func (c *Conn) %sChecked(%s) %s {",
r.SrcName(), r.ParamNameTypes(), r.CookieName())
c.Putln("cookie := c.newCookie(true, false)")
c.Putln("c.newRequest(%s(%s), cookie)", r.ReqName(), r.ParamNames())
c.Putln("return %s(cookie)", r.CookieName())
c.Putln("}")
c.Putln("")
}
r.WriteRequest(c)
}
func (r *Request) ReadReply(c *Context) {
c.Putln("// Request reply for %s", r.SrcName())
c.Putln("// size: %s", r.Reply.Size())
c.Putln("type %s struct {", r.ReplyName())
c.Putln("type %s struct {", r.ReplyTypeName())
c.Putln("Sequence uint16")
c.Putln("Length uint32")
for _, field := range r.Reply.Fields {
@ -40,15 +61,21 @@ func (r *Request) ReadReply(c *Context) {
c.Putln("}")
c.Putln("")
c.Putln("// Read reply %s", r.SrcName())
c.Putln("func (c *Conn) %s(cook *Cookie) (*%s, error) {",
r.ReplyName(), r.ReplyName())
c.Putln("buf, err := c.waitForReply(cook)")
c.Putln("if err != nil {")
c.Putln("return nil, err")
c.Putln("// Waits and reads reply data from request %s", r.SrcName())
c.Putln("func (cook %s) Reply() (*%s, error) {",
r.CookieName(), r.ReplyTypeName())
c.Putln("buf, err := cookie(cook).reply()")
c.Putln("if err != nil {")
c.Putln("return nil, err")
c.Putln("}")
c.Putln("return %s(buf), nil", r.ReplyName())
c.Putln("}")
c.Putln("")
c.Putln("v := new(%s)", r.ReplyName())
c.Putln("// Read reply into structure from buffer for %s", r.SrcName())
c.Putln("func %s(buf []byte) *%s {",
r.ReplyName(), r.ReplyTypeName())
c.Putln("v := new(%s)", r.ReplyTypeName())
c.Putln("b := 1 // skip reply determinant")
c.Putln("")
for i, field := range r.Reply.Fields {
@ -63,21 +90,14 @@ func (r *Request) ReadReply(c *Context) {
field.Read(c, "v.")
c.Putln("")
}
c.Putln("return v, nil")
c.Putln("return v")
c.Putln("}")
c.Putln("")
}
func (r *Request) WriteRequest(c *Context) {
c.Putln("// Write request to wire for %s", r.SrcName())
c.Putln("func (c *Conn) %s(%s) *Cookie {", r.ReqName(), r.ParamNameTypes())
r.WriteRequestFields(c)
c.Putln("return c.sendRequest(true, buf)")
c.Putln("}")
c.Putln("")
}
func (r *Request) WriteRequestFields(c *Context) {
c.Putln("func %s(%s) []byte {", r.ReqName(), r.ParamNameTypes())
c.Putln("size := %s", r.Size(c))
c.Putln("b := 0")
c.Putln("buf := make([]byte, size)")
@ -85,6 +105,12 @@ func (r *Request) WriteRequestFields(c *Context) {
c.Putln("buf[b] = %d // request opcode", r.Opcode)
c.Putln("b += 1")
c.Putln("")
if strings.ToLower(c.protocol.Name) != "xproto" {
c.Putln("buf[b] = c.extensions[\"%s\"]",
strings.ToUpper(c.protocol.ExtXName))
c.Putln("b += 1")
c.Putln("")
}
for i, field := range r.Fields {
if i == 1 {
c.Putln("Put16(buf[b:], uint16(size / 4)) "+
@ -95,6 +121,9 @@ func (r *Request) WriteRequestFields(c *Context) {
field.Write(c, "")
c.Putln("")
}
c.Putln("return buf")
c.Putln("}")
c.Putln("")
}
func (r *Request) ParamNames() string {
@ -102,7 +131,10 @@ func (r *Request) ParamNames() string {
for _, field := range r.Fields {
switch f := field.(type) {
case *ValueField:
names = append(names, f.MaskName)
// mofos...
if r.SrcName() != "ConfigureWindow" {
names = append(names, f.MaskName)
}
names = append(names, f.ListName)
case *PadField:
continue

23
nexgb/xgbgen/representation.go
View File

@ -3,6 +3,7 @@ package main
import (
"fmt"
"log"
"unicode"
)
type Protocol struct {
@ -58,6 +59,16 @@ func (r *Request) XmlName() string {
}
func (r *Request) ReplyName() string {
if r.Reply == nil {
log.Panicf("Cannot call 'ReplyName' on request %s, which has no reply.",
r.SrcName())
}
name := r.SrcName()
lower := string(unicode.ToLower(rune(name[0]))) + name[1:]
return fmt.Sprintf("%sReply", lower)
}
func (r *Request) ReplyTypeName() string {
if r.Reply == nil {
log.Panicf("Cannot call 'ReplyName' on request %s, which has no reply.",
r.SrcName())
@ -66,7 +77,13 @@ func (r *Request) ReplyName() string {
}
func (r *Request) ReqName() string {
return fmt.Sprintf("%sRequest", r.SrcName())
name := r.SrcName()
lower := string(unicode.ToLower(rune(name[0]))) + name[1:]
return fmt.Sprintf("%sRequest", lower)
}
func (r *Request) CookieName() string {
return fmt.Sprintf("%sCookie", r.SrcName())
}
// Size for Request needs a context.
@ -99,7 +116,9 @@ func (r *Request) Size(c *Context) Size {
size = size.Add(field.Size())
}
}
return size
return newExpressionSize(&Padding{
Expr: size.Expression,
})
}
type Reply struct {