forked from andyleap/gencode
/
type_struct.go
70 lines (60 loc) · 1.68 KB
/
type_struct.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
package golang
import (
"text/template"
"github.com/andyleap/gencode/schema"
)
var (
StructTemps *template.Template
)
func init() {
StructTemps = template.New("StructTemps")
template.Must(StructTemps.New("marshal").Parse(`
{
nbuf, err := {{.Target}}.Marshal(buf[{{if .W.IAdjusted}}i + {{end}}{{.W.Offset}}:])
if err != nil {
return nil, err
}
i += uint64(len(nbuf))
}`))
template.Must(StructTemps.New("unmarshal").Parse(`
{
ni, err := {{.Target}}.Unmarshal(buf[{{if .W.IAdjusted}}i + {{end}}{{.W.Offset}}:])
if err != nil {
return 0, err
}
i += ni
}`))
template.Must(StructTemps.New("size").Parse(`
{
s += {{.Target}}.Size()
}`))
template.Must(StructTemps.New("field").Parse(`{{.Struct}}`))
}
type StructTemp struct {
*schema.StructType
W *Walker
Target string
}
func (w *Walker) WalkStructDef(st *schema.StructType) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
err = parts.AddTemplate(StructTemps, "field", st)
return
}
func (w *Walker) WalkStructSize(st *schema.StructType, target string) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
err = parts.AddTemplate(StructTemps, "size", StructTemp{st, w, target})
w.IAdjusted = true
return
}
func (w *Walker) WalkStructMarshal(st *schema.StructType, target string) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
err = parts.AddTemplate(StructTemps, "marshal", StructTemp{st, w, target})
w.IAdjusted = true
return
}
func (w *Walker) WalkStructUnmarshal(st *schema.StructType, target string) (parts *StringBuilder, err error) {
parts = &StringBuilder{}
err = parts.AddTemplate(StructTemps, "unmarshal", StructTemp{st, w, target})
w.IAdjusted = true
return
}