-
Notifications
You must be signed in to change notification settings - Fork 66
/
unpack.go
121 lines (114 loc) · 1.93 KB
/
unpack.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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
package dag
import (
"errors"
"github.com/brimdata/zed/compiler/ast/zed"
"github.com/brimdata/zed/pkg/unpack"
)
var unpacker = unpack.New(
zed.Array{},
ArrayExpr{},
Assignment{},
BinaryExpr{},
Call{},
Cast{},
zed.CastValue{},
Conditional{},
Const{},
Cut{},
zed.DefValue{},
Dot{},
Drop{},
Explode{},
zed.Enum{},
File{},
Filter{},
From{},
Fuse{},
Summarize{},
Head{},
HTTP{},
zed.ImpliedValue{},
Join{},
zed.Map{},
MapExpr{},
Shape{},
Parallel{},
Pass{},
Path{},
Pick{},
Pool{},
zed.Primitive{},
Put{},
zed.Record{},
Agg{},
RegexpMatch{},
RegexpSearch{},
RecordExpr{},
Ref{},
Rename{},
Search{},
SelectExpr{},
SeqExpr{},
Sequential{},
zed.Set{},
SetExpr{},
Sort{},
Switch{},
Tail{},
Top{},
Trunk{},
zed.TypeArray{},
zed.TypeDef{},
zed.TypeEnum{},
zed.TypeMap{},
zed.TypeName{},
zed.TypeNull{},
zed.TypePrimitive{},
TypeProc{},
zed.TypeRecord{},
zed.TypeSet{},
zed.TypeUnion{},
zed.TypeValue{},
UnaryExpr{},
Uniq{},
)
func UnpackJSON(buf []byte) (interface{}, error) {
if len(buf) == 0 {
return nil, nil
}
return unpacker.Unmarshal(buf)
}
// UnpackJSONAsOp transforms a JSON representation of an operator into an dag.Op.
func UnpackJSONAsOp(buf []byte) (Op, error) {
result, err := UnpackJSON(buf)
if result == nil || err != nil {
return nil, err
}
op, ok := result.(Op)
if !ok {
return nil, errors.New("JSON object is not a DAG operator")
}
return op, nil
}
func UnpackMapAsOp(m interface{}) (Op, error) {
object, err := unpacker.UnmarshalObject(m)
if object == nil || err != nil {
return nil, err
}
op, ok := object.(Op)
if !ok {
return nil, errors.New("dag.UnpackMapAsOp: not an Op")
}
return op, nil
}
func UnpackMapAsExpr(m interface{}) (Expr, error) {
object, err := unpacker.UnmarshalObject(m)
if object == nil || err != nil {
return nil, err
}
e, ok := object.(Expr)
if !ok {
return nil, errors.New("dag.UnpackMapAsExpr: not an Expr")
}
return e, nil
}