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
|
package dstream
import (
"fmt"
"time"
)
func (gen *generate) init() {
for _, na := range gen.source.Names() {
if gen.newvarname == na {
msg := fmt.Sprintf("Generate: variable '%s' already exists.\n", gen.newvarname)
panic(msg)
}
}
gen.names = append(gen.source.Names(), gen.newvarname)
gen.bdata = make([]interface{}, len(gen.names))
switch gen.dtype {
{{- range . }}
case {{ .Utype }}:
gen.bdata[len(gen.bdata)-1] = make([]{{ .Type }}, 0)
{{ end }}
default:
panic("Generate: unknown dtype")
}
}
func (gen *generate) Next() bool {
if !gen.source.Next() {
return false
}
// All but new variable
for j := 0; j < gen.source.NumVar(); j++ {
gen.bdata[j] = gen.source.GetPos(j)
}
n := ilen(gen.GetPos(0))
// The new variable goes in the last position
q := len(gen.names) - 1
switch x := gen.bdata[q].(type) {
{{- range . }}
case []{{ .Type }}:
gen.bdata[q] = resize{{ .Utype }}(x, n)
{{ end }}
default:
panic("unknown type")
}
mp := make(map[string]interface{})
for k, na := range gen.names {
if na != gen.newvarname {
mp[na] = gen.bdata[k]
}
}
gen.gfunc(mp, gen.bdata[q])
return true
}
|
