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Diffstat (limited to 'nexgb/xgbgen')
-rw-r--r--nexgb/xgbgen/expression.go28
-rw-r--r--nexgb/xgbgen/field.go31
-rw-r--r--nexgb/xgbgen/go.go301
-rw-r--r--nexgb/xgbgen/go_error.go39
-rw-r--r--nexgb/xgbgen/go_event.go38
-rw-r--r--nexgb/xgbgen/go_list.go75
-rw-r--r--nexgb/xgbgen/go_single_field.go138
-rw-r--r--nexgb/xgbgen/go_struct.go107
-rw-r--r--nexgb/xgbgen/go_union.go15
9 files changed, 503 insertions, 269 deletions
diff --git a/nexgb/xgbgen/expression.go b/nexgb/xgbgen/expression.go
index 7099c25..a975320 100644
--- a/nexgb/xgbgen/expression.go
+++ b/nexgb/xgbgen/expression.go
@@ -13,6 +13,34 @@ type Expression interface {
Initialize(p *Protocol)
}
+// Function is a custom expression not found in the XML. It's simply used
+// to apply a function named in 'Name' to the Expr expression.
+type Function struct {
+ Name string
+ Expr Expression
+}
+
+func (e *Function) Concrete() bool {
+ return false
+}
+
+func (e *Function) Eval() uint {
+ log.Fatalf("Cannot evaluate a 'Function'. It is not concrete.")
+ panic("unreachable")
+}
+
+func (e *Function) Reduce(prefix, fun string) string {
+ return fmt.Sprintf("%s(%s)", e.Name, e.Expr.Reduce(prefix, fun))
+}
+
+func (e *Function) String() string {
+ return e.Reduce("", "")
+}
+
+func (e *Function) Initialize(p *Protocol) {
+ e.Expr.Initialize(p)
+}
+
type BinaryOp struct {
Op string
Expr1 Expression
diff --git a/nexgb/xgbgen/field.go b/nexgb/xgbgen/field.go
index ed113e0..0f2323e 100644
--- a/nexgb/xgbgen/field.go
+++ b/nexgb/xgbgen/field.go
@@ -1,5 +1,10 @@
package main
+import (
+ "fmt"
+ "log"
+)
+
type Field interface {
Initialize(p *Protocol)
SrcName() string
@@ -8,6 +13,7 @@ type Field interface {
Define(c *Context)
Read(c *Context)
+ Write(c *Context)
}
func (pad *PadField) Initialize(p *Protocol) {}
@@ -66,8 +72,31 @@ func (f *ListField) XmlName() string {
return f.xmlName
}
+// func (f *ListField) Size() Size {
+ // return newExpressionSize(f.LengthExpr).Multiply(f.Type.Size())
+// }
+
func (f *ListField) Size() Size {
- return newExpressionSize(f.LengthExpr).Multiply(f.Type.Size())
+ simpleLen := &Function{
+ Name: "pad",
+ Expr: newBinaryOp("*", f.LengthExpr, f.Type.Size().Expression),
+ }
+
+ switch f.Type.(type) {
+ case *Struct:
+ sizeFun := &Function{
+ Name: fmt.Sprintf("%sListSize", f.Type.SrcName()),
+ Expr: &FieldRef{Name: f.SrcName()},
+ }
+ return newExpressionSize(sizeFun)
+ case *Base:
+ return newExpressionSize(simpleLen)
+ case *Resource:
+ return newExpressionSize(simpleLen)
+ default:
+ log.Fatalf("Cannot compute list size with type '%T'.", f.Type)
+ }
+ panic("unreachable")
}
func (f *ListField) Initialize(p *Protocol) {
diff --git a/nexgb/xgbgen/go.go b/nexgb/xgbgen/go.go
index 014b76b..11e413b 100644
--- a/nexgb/xgbgen/go.go
+++ b/nexgb/xgbgen/go.go
@@ -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")
}
diff --git a/nexgb/xgbgen/go_error.go b/nexgb/xgbgen/go_error.go
new file mode 100644
index 0000000..0cb77cc
--- /dev/null
+++ b/nexgb/xgbgen/go_error.go
@@ -0,0 +1,39 @@
+package main
+
+// 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("")
+}
diff --git a/nexgb/xgbgen/go_event.go b/nexgb/xgbgen/go_event.go
new file mode 100644
index 0000000..d91fd7a
--- /dev/null
+++ b/nexgb/xgbgen/go_event.go
@@ -0,0 +1,38 @@
+package main
+
+// 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("")
+}
diff --git a/nexgb/xgbgen/go_list.go b/nexgb/xgbgen/go_list.go
new file mode 100644
index 0000000..03da22e
--- /dev/null
+++ b/nexgb/xgbgen/go_list.go
@@ -0,0 +1,75 @@
+package main
+
+import (
+ "fmt"
+ "log"
+)
+
+// List fields
+func (f *ListField) Define(c *Context) {
+ c.Putln("%s []%s // size: %s",
+ f.SrcName(), f.Type.SrcName(), f.Size())
+}
+
+func (f *ListField) Read(c *Context) {
+ c.Putln("")
+
+ 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("b = pad(b)")
+ case *Base:
+ length := f.LengthExpr.Reduce("v.", "")
+ c.Putln("v.%s = make([]%s, %s)", f.SrcName(), t.SrcName(), length)
+ if t.SrcName() == "byte" {
+ c.Putln("copy(v.%s[:%s], buf[b:])", f.SrcName(), length)
+ c.Putln("b += pad(%s)", length)
+ } else {
+ c.Putln("for i := 0; i < %s; i++ {", length)
+ ReadSimpleSingleField(c, fmt.Sprintf("v.%s[i]", f.SrcName()), t)
+ c.Putln("}")
+ c.Putln("b = pad(b)")
+ }
+ case *Struct:
+ c.Putln("v.%s = make([]%s, %s)",
+ f.SrcName(), t.SrcName(), f.LengthExpr.Reduce("v.", ""))
+ c.Putln("b += Read%sList(buf[b:], v.%s)", t.SrcName(), f.SrcName())
+ default:
+ log.Fatalf("Cannot read list field '%s' with %T type.",
+ f.XmlName(), f.Type)
+ }
+}
+
+func (f *ListField) Write(c *Context) {
+ c.Putln("")
+
+ switch t := f.Type.(type) {
+ case *Resource:
+ length := f.LengthExpr.Reduce("v.", "")
+ c.Putln("for i := 0; i < %s; i++", length)
+ WriteSimpleSingleField(c, fmt.Sprintf("v.%s[i]", f.SrcName()), t)
+ c.Putln("}")
+ c.Putln("b = pad(b)")
+ case *Base:
+ length := f.LengthExpr.Reduce("v.", "")
+ if t.SrcName() == "byte" {
+ c.Putln("copy(buf[b:], v.%s[:%s])", f.SrcName(), length)
+ c.Putln("b += pad(%s)", length)
+ } else {
+ c.Putln("for i := 0; i < %s; i++ {", length)
+ WriteSimpleSingleField(c, fmt.Sprintf("v.%s[i]", f.SrcName()), t)
+ c.Putln("}")
+ c.Putln("b = pad(b)")
+ }
+ case *Struct:
+ c.Putln("b += %sListBytes(buf[b:], v.%s)", t.SrcName(), f.SrcName())
+ default:
+ log.Fatalf("Cannot read list field '%s' with %T type.",
+ f.XmlName(), f.Type)
+ }
+}
+
diff --git a/nexgb/xgbgen/go_single_field.go b/nexgb/xgbgen/go_single_field.go
new file mode 100644
index 0000000..3c354e7
--- /dev/null
+++ b/nexgb/xgbgen/go_single_field.go
@@ -0,0 +1,138 @@
+package main
+
+import (
+ "fmt"
+ "log"
+)
+
+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 = %s{}", f.SrcName(), t.SrcName())
+ c.Putln("b += Read%s(buf[b:], &v.%s)", t.SrcName(), f.SrcName())
+ c.Putln("")
+ default:
+ log.Fatalf("Cannot read field '%s' with %T type.", f.XmlName(), f.Type)
+ }
+}
+
+func WriteSimpleSingleField(c *Context, name string, typ Type) {
+ switch t := typ.(type) {
+ case *Resource:
+ c.Putln("put32(buf[b:], uint32(%s))", name)
+ case *TypeDef:
+ switch t.Size().Eval() {
+ case 1:
+ c.Putln("buf[b] = byte(%s)", name)
+ case 2:
+ c.Putln("put16(buf[b:], uint16(%s))", name)
+ case 4:
+ c.Putln("put32(buf[b:], uint32(%s))", name)
+ case 8:
+ c.Putln("put64(buf[b:], uint64(%s))", name)
+ }
+ case *Base:
+ switch t.Size().Eval() {
+ case 1:
+ if t.SrcName() != "byte" {
+ c.Putln("buf[b] = byte(%s)", name)
+ } else {
+ c.Putln("buf[b] = %s", name)
+ }
+ case 2:
+ if t.SrcName() != "uint16" {
+ c.Putln("put16(buf[b:], uint16(%s))", name)
+ } else {
+ c.Putln("put16(buf[b:], %s)", name)
+ }
+ case 4:
+ if t.SrcName() != "uint32" {
+ c.Putln("put32(buf[b:], uint32(%s))", name)
+ } else {
+ c.Putln("put32(buf[b:], %s)", name)
+ }
+ case 8:
+ if t.SrcName() != "uint64" {
+ c.Putln("put64(buf[b:], uint64(%s))", name)
+ } else {
+ c.Putln("put64(buf[b:], %s)", name)
+ }
+ }
+ 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) Write(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("{")
+ c.Putln("structBytes := v.%s.Bytes()", f.SrcName())
+ c.Putln("copy(buf[b:], structBytes)")
+ c.Putln("b += len(structBytes)")
+ c.Putln("}")
+ default:
+ log.Fatalf("Cannot read field '%s' with %T type.", f.XmlName(), f.Type)
+ }
+}
diff --git a/nexgb/xgbgen/go_struct.go b/nexgb/xgbgen/go_struct.go
new file mode 100644
index 0000000..6925c88
--- /dev/null
+++ b/nexgb/xgbgen/go_struct.go
@@ -0,0 +1,107 @@
+package main
+
+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)
+
+ // Write function that computes the size of a list of these structs.
+ s.WriteListSize(c)
+}
+
+// Read for a struct creates a function 'ReadStructName' that takes a source
+// byte slice (i.e., the buffer) and a destination struct, and returns
+// the number of bytes read off the buffer.
+// 'ReadStructName' 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 Read%s(buf []byte, v *%s) int {", s.SrcName(), s.SrcName())
+
+ c.Putln("b := 0")
+ c.Putln("")
+ for _, field := range s.Fields {
+ field.Read(c)
+ }
+ c.Putln("return b")
+
+ c.Putln("}")
+ c.Putln("")
+}
+
+// ReadList for a struct creates a function 'ReadStructNameList' that takes
+// a source (i.e., the buffer) byte slice, and a destination slice and returns
+// 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, dest []%s) int {",
+ s.SrcName(), s.SrcName())
+
+ c.Putln("b := 0")
+ c.Putln("for i := 0; i < len(dest); i++ {")
+ c.Putln("dest[i] = %s{}", s.SrcName())
+ c.Putln("b += Read%s(buf[b:], &dest[i])", s.SrcName())
+ c.Putln("}")
+
+ c.Putln("return pad(b)")
+
+ c.Putln("}")
+ c.Putln("")
+}
+
+func (s *Struct) Write(c *Context) {
+ c.Putln("// Struct write %s", s.SrcName())
+ c.Putln("func (v %s) Bytes() []byte {", s.SrcName())
+ c.Putln("buf := make([]byte, %s)", s.Size().Reduce("s.", ""))
+ c.Putln("b := 0")
+ c.Putln("")
+ for _, field := range s.Fields {
+ field.Write(c)
+ }
+ c.Putln("return buf")
+ c.Putln("}")
+ c.Putln("")
+}
+
+func (s *Struct) WriteList(c *Context) {
+ c.Putln("// Write struct list %s", s.SrcName())
+ c.Putln("func %sListBytes(buf []byte, list []%s) int {",
+ s.SrcName(), s.SrcName())
+ c.Putln("b := 0")
+ c.Putln("var structBytes []byte")
+ c.Putln("for _, item := range list {")
+ c.Putln("structBytes = item.Bytes()")
+ c.Putln("copy(buf[b:], len(structBytes))")
+ c.Putln("b += len(structBytes)")
+ c.Putln("}")
+ c.Putln("return b")
+ c.Putln("}")
+}
+
+func (s *Struct) WriteListSize(c *Context) {
+ c.Putln("// Struct list size %s", s.SrcName())
+ c.Putln("func %sListSize(list []%s) int {", s.SrcName(), s.SrcName())
+ c.Putln("size := 0")
+ c.Putln("for _, item := range list {")
+ c.Putln("size += %s", s.Size().Reduce("item.", ""))
+ c.Putln("}")
+ c.Putln("return pad(size)")
+ c.Putln("}")
+ c.Putln("")
+}
diff --git a/nexgb/xgbgen/go_union.go b/nexgb/xgbgen/go_union.go
new file mode 100644
index 0000000..5721c49
--- /dev/null
+++ b/nexgb/xgbgen/go_union.go
@@ -0,0 +1,15 @@
+package main
+
+// 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())
+}
+
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-22 07:11:52 +0000