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splitting up go specific code. too much for one file IMO. more progress. almost done with structs.

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This commit is contained in:
Andrew Gallant (Ocelot)
2012-04-30 16:18:17 -04:00
parent 2a2d8653b3
commit 73154769b3
9 changed files with 503 additions and 269 deletions
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301
nexgb/xgbgen/go.go
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@@ -1,10 +1,5 @@
package main
import (
"fmt"
"log"
)
// xgbResourceIdName is the name of the type used for all resource identifiers.
// As of right now, it needs to be declared somewhere manually.
var xgbGenResourceIdName = "Id"
@@ -92,173 +87,6 @@ func (td *TypeDef) Define(c *Context) {
c.Putln("")
}
// Struct types
func (s *Struct) Define(c *Context) {
c.Putln("// '%s' struct definition", s.SrcName())
c.Putln("// Size: %s", s.Size())
c.Putln("type %s struct {", s.SrcName())
for _, field := range s.Fields {
field.Define(c)
}
c.Putln("}")
c.Putln("")
// Write function that reads bytes and produces this struct.
s.Read(c)
// Write function that reads a list of this structs.
s.ReadList(c)
// Write function that writes bytes given this struct.
s.Write(c)
// Write function that writes a list of this struct.
s.WriteList(c)
}
// Read for a struct creates a function 'NewStructName' that takes a byte
// slice and produces TWO values: an instance of 'StructName' and the number
// of bytes read from the byte slice.
// 'NewStructName' should only be used to read raw reply data from the wire.
func (s *Struct) Read(c *Context) {
c.Putln("// Struct read %s", s.SrcName())
c.Putln("func New%s(buf []byte) (%s, int) {", s.SrcName(), s.SrcName())
c.Putln("v := %s{}", s.SrcName())
c.Putln("b := 0")
c.Putln("consumed := 0")
c.Putln("consumed = 0 + consumed // no-op") // dirty hack for a no-op
c.Putln("")
for _, field := range s.Fields {
field.Read(c)
}
c.Putln("return v, b")
c.Putln("}")
c.Putln("")
}
// ReadList for a struct creates a function 'ReadStructNameList' that takes
// a byte slice and a length and produces TWO values: an slice of StructName
// and the number of bytes read from the byte slice.
func (s *Struct) ReadList(c *Context) {
c.Putln("// Struct list read %s", s.SrcName())
c.Putln("func Read%sList(buf []byte, length int) ([]%s, int) {",
s.SrcName(), s.SrcName())
c.Putln("v := make([]%s, length)", s.SrcName())
c.Putln("b := 0")
c.Putln("consumed := 0")
c.Putln("consumed = 0 + consumed // no-op") // dirty hack for a no-op
c.Putln("for i := 0; i < length; i++ {")
c.Putln("v[i], consumed = New%s(buf[b:])", s.SrcName())
c.Putln("b += consumed")
c.Putln("}")
c.Putln("return v, pad(b)")
c.Putln("}")
c.Putln("")
}
func (s *Struct) Write(c *Context) {
c.Putln("// Struct write %s", s.SrcName())
c.Putln("")
}
func (s *Struct) WriteList(c *Context) {
c.Putln("// Write struct list %s", s.SrcName())
c.Putln("")
}
// Union types
func (u *Union) Define(c *Context) {
c.Putln("// Union definition %s", u.SrcName())
}
func (u *Union) Read(c *Context, prefix string) {
c.Putln("// Union read %s", u.SrcName())
}
func (u *Union) Write(c *Context, prefix string) {
c.Putln("// Union write %s", u.SrcName())
}
// Event types
func (e *Event) Define(c *Context) {
c.Putln("// Event definition %s (%d)", e.SrcName(), e.Number)
}
func (e *Event) Read(c *Context, prefix string) {
c.Putln("// Event read %s", e.SrcName())
}
func (e *Event) Write(c *Context, prefix string) {
c.Putln("// Event write %s", e.SrcName())
}
// EventCopy types
func (e *EventCopy) Define(c *Context) {
c.Putln("// EventCopy definition %s (%d)", e.SrcName(), e.Number)
c.Putln("")
c.Putln("const %s = %d", e.SrcName(), e.Number)
c.Putln("")
c.Putln("type %s %s", e.EvType(), e.Old.(*Event).EvType())
c.Putln("")
c.Putln("func New%s(buf []byte) %s {", e.SrcName(), e.EvType())
c.Putln("return (%s)(New%s(buf))", e.EvType(), e.Old.SrcName())
c.Putln("}")
c.Putln("")
c.Putln("func (ev %s) ImplementsEvent() { }", e.EvType())
c.Putln("")
c.Putln("func (ev %s) Bytes() []byte {", e.EvType())
c.Putln("return (%s)(ev).Bytes()", e.Old.(*Event).EvType())
c.Putln("}")
c.Putln("")
c.Putln("func init() {")
c.Putln("newEventFuncs[%d] = New%s", e.Number, e.SrcName())
c.Putln("}")
c.Putln("")
}
// Error types
func (e *Error) Define(c *Context) {
c.Putln("// Error definition %s (%d)", e.SrcName(), e.Number)
c.Putln("")
}
func (e *Error) Read(c *Context, prefix string) {
c.Putln("// Error read %s", e.SrcName())
}
func (e *Error) Write(c *Context, prefix string) {
c.Putln("// Error write %s", e.SrcName())
}
// ErrorCopy types
func (e *ErrorCopy) Define(c *Context) {
c.Putln("// ErrorCopy definition %s (%d)", e.SrcName(), e.Number)
c.Putln("")
c.Putln("const %s = %d", e.ErrConst(), e.Number)
c.Putln("")
c.Putln("type %s %s", e.ErrType(), e.Old.(*Error).ErrType())
c.Putln("")
c.Putln("func New%s(buf []byte) %s {", e.SrcName(), e.ErrType())
c.Putln("return (%s)(New%s(buf))", e.ErrType(), e.Old.SrcName())
c.Putln("}")
c.Putln("")
c.Putln("func (err %s) ImplementsError() { }", e.ErrType())
c.Putln("")
c.Putln("func (err %s) Bytes() []byte {", e.ErrType())
c.Putln("return (%s)(err).Bytes()", e.Old.(*Error).ErrType())
c.Putln("}")
c.Putln("")
c.Putln("func init() {")
c.Putln("newErrorFuncs[%d] = New%s", e.Number, e.SrcName())
c.Putln("}")
c.Putln("")
}
// Field definitions, reads and writes.
// Pad fields
@@ -268,143 +96,80 @@ func (f *PadField) Define(c *Context) {
func (f *PadField) Read(c *Context) {
c.Putln("b += %s // padding", f.Size())
c.Putln("")
}
// Single fields
func (f *SingleField) Define(c *Context) {
c.Putln("%s %s", f.SrcName(), f.Type.SrcName())
}
func ReadSimpleSingleField(c *Context, name string, typ Type) {
switch t := typ.(type) {
case *Resource:
c.Putln("%s = get32(buf[b:])", name)
case *TypeDef:
switch t.Size().Eval() {
case 1:
c.Putln("%s = %s(buf[b])", name, t.SrcName())
case 2:
c.Putln("%s = %s(get16(buf[b:]))", name, t.SrcName())
case 4:
c.Putln("%s = %s(get32(buf[b:]))", name, t.SrcName())
case 8:
c.Putln("%s = %s(get64(buf[b:]))", name, t.SrcName())
}
case *Base:
var val string
switch t.Size().Eval() {
case 1:
val = fmt.Sprintf("buf[b]")
case 2:
val = fmt.Sprintf("get16(buf[b:])")
case 4:
val = fmt.Sprintf("get32(buf[b:])")
case 8:
val = fmt.Sprintf("get64(buf[b:])")
}
// We need to convert base types if they aren't uintXX or byte
ty := t.SrcName()
if ty != "byte" && ty != "uint16" && ty != "uint32" && ty != "uint64" {
val = fmt.Sprintf("%s(%s)", ty, val)
}
c.Putln("%s = %s", name, val)
default:
log.Fatalf("Cannot read field '%s' as a simple field with %T type.",
name, typ)
}
c.Putln("b += %s", typ.Size())
}
func (f *SingleField) Read(c *Context) {
switch t := f.Type.(type) {
case *Resource:
ReadSimpleSingleField(c, fmt.Sprintf("v.%s", f.SrcName()), t)
case *TypeDef:
ReadSimpleSingleField(c, fmt.Sprintf("v.%s", f.SrcName()), t)
case *Base:
ReadSimpleSingleField(c, fmt.Sprintf("v.%s", f.SrcName()), t)
case *Struct:
c.Putln("v.%s, consumed = New%s(buf[b:])", f.SrcName(), t.SrcName())
c.Putln("b += consumed")
c.Putln("")
default:
log.Fatalf("Cannot read field '%s' with %T type.", f.XmlName(), f.Type)
}
}
// List fields
func (f *ListField) Define(c *Context) {
c.Putln("%s []%s // length: %s",
f.SrcName(), f.Type.SrcName(), f.Size())
}
func (f *ListField) Read(c *Context) {
switch t := f.Type.(type) {
case *Resource:
length := f.LengthExpr.Reduce("v.", "")
c.Putln("v.%s = make([]Id, %s)", f.SrcName(), length)
c.Putln("for i := 0; i < %s; i++ {", length)
ReadSimpleSingleField(c, fmt.Sprintf("v.%s[i]", f.SrcName()), t)
c.Putln("}")
c.Putln("")
case *Base:
length := f.LengthExpr.Reduce("v.", "")
c.Putln("v.%s = make([]%s, %s)", f.SrcName(), t.SrcName(), length)
c.Putln("for i := 0; i < %s; i++ {", length)
ReadSimpleSingleField(c, fmt.Sprintf("v.%s[i]", f.SrcName()), t)
c.Putln("}")
c.Putln("")
case *Struct:
c.Putln("v.%s, consumed = Read%sList(buf[b:], %s)",
f.SrcName(), t.SrcName(), f.LengthExpr.Reduce("v.", ""))
c.Putln("b += consumed")
c.Putln("")
default:
log.Fatalf("Cannot read list field '%s' with %T type.",
f.XmlName(), f.Type)
}
func (f *PadField) Write(c *Context) {
c.Putln("b += %s // padding", f.Size())
}
// Local fields
func (f *LocalField) Define(c *Context) {
c.Putln("// local field: %s %s", f.SrcName(), f.Type.SrcName())
panic("todo")
}
func (f *LocalField) Read(c *Context) {
c.Putln("// reading local field: %s (%s) :: %s",
f.SrcName(), f.Size(), f.Type.SrcName())
panic("todo")
}
func (f *LocalField) Write(c *Context) {
c.Putln("// writing local field: %s (%s) :: %s",
f.SrcName(), f.Size(), f.Type.SrcName())
panic("todo")
}
// Expr fields
func (f *ExprField) Define(c *Context) {
c.Putln("// expression field: %s %s (%s)",
f.SrcName(), f.Type.SrcName(), f.Expr)
panic("todo")
}
func (f *ExprField) Read(c *Context) {
c.Putln("// reading expression field: %s (%s) (%s) :: %s",
f.SrcName(), f.Size(), f.Expr, f.Type.SrcName())
panic("todo")
}
func (f *ExprField) Write(c *Context) {
c.Putln("// writing expression field: %s (%s) (%s) :: %s",
f.SrcName(), f.Size(), f.Expr, f.Type.SrcName())
panic("todo")
}
// Value field
func (f *ValueField) Define(c *Context) {
c.Putln("// valueparam field: type: %s, mask name: %s, list name: %s",
f.MaskType.SrcName(), f.MaskName, f.ListName)
panic("todo")
}
func (f *ValueField) Read(c *Context) {
c.Putln("// reading valueparam: type: %s, mask name: %s, list name: %s",
f.MaskType.SrcName(), f.MaskName, f.ListName)
panic("todo")
}
func (f *ValueField) Write(c *Context) {
c.Putln("// writing valueparam: type: %s, mask name: %s, list name: %s",
f.MaskType.SrcName(), f.MaskName, f.ListName)
panic("todo")
}
// Switch field
func (f *SwitchField) Define(c *Context) {
c.Putln("// switch field: %s (%s)", f.Name, f.Expr)
panic("todo")
}
func (f *SwitchField) Read(c *Context) {
c.Putln("// reading switch field: %s (%s)", f.Name, f.Expr)
panic("todo")
}
func (f *SwitchField) Write(c *Context) {
c.Putln("// writing switch field: %s (%s)", f.Name, f.Expr)
panic("todo")
}