forked from andyleap/gencode
/
type_string.go
95 lines (85 loc) · 2.23 KB
/
type_string.go
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package golang
import (
"text/template"
"github.com/andyleap/gencode/schema"
)
var (
StringTemps *template.Template
)
func init() {
StringTemps = template.New("StringTemps")
template.Must(StringTemps.New("marshal").Parse(`
{
l := uint64(len({{.Target}}))
{{.VarIntCode}}
copy(buf[{{if .W.IAdjusted}}i + {{end}}{{.W.Offset}}:], {{.Target}})
i += l
}`))
template.Must(StringTemps.New("unmarshal").Parse(`
{
l := uint64(0)
{{.VarIntCode}}
{{.Target}} = string(buf[{{if .W.IAdjusted}}i + {{end}}{{.W.Offset}}:{{if .W.IAdjusted}}i + {{end}}{{.W.Offset}}+l])
i += l
}`))
template.Must(StringTemps.New("size").Parse(`
{
l := uint64(len({{.Target}}))
{{.VarIntCode}}
s += l
}`))
template.Must(StringTemps.New("field").Parse(`string`))
}
type StringTemp struct {
*schema.StringType
W *Walker
Target string
VarIntCode string
}
func (w *Walker) WalkStringDef(st *schema.StringType) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
err = parts.AddTemplate(StringTemps, "field", st)
return
}
func (w *Walker) WalkStringSize(st *schema.StringType, target string) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
intHandler := &schema.IntType{
Bits: 64,
Signed: false,
VarInt: true,
}
intcode, err := w.WalkIntSize(intHandler, "l")
if err != nil {
return nil, err
}
err = parts.AddTemplate(StringTemps, "size", StringTemp{st, w, target, intcode.String()})
return
}
func (w *Walker) WalkStringMarshal(st *schema.StringType, target string) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
intHandler := &schema.IntType{
Bits: 64,
Signed: false,
VarInt: true,
}
intcode, err := w.WalkIntMarshal(intHandler, "l")
if err != nil {
return nil, err
}
err = parts.AddTemplate(StringTemps, "marshal", StringTemp{st, w, target, intcode.String()})
return
}
func (w *Walker) WalkStringUnmarshal(st *schema.StringType, target string) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
intHandler := &schema.IntType{
Bits: 64,
Signed: false,
VarInt: true,
}
intcode, err := w.WalkIntUnmarshal(intHandler, "l")
if err != nil {
return nil, err
}
err = parts.AddTemplate(StringTemps, "unmarshal", StringTemp{st, w, target, intcode.String()})
return
}