/
decoder_array.go
138 lines (130 loc) · 2.19 KB
/
decoder_array.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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
package decoder
import (
"reflect"
)
func (d *Decoder) SkipArray() error {
level := 1
d.pos++
for {
c := d.char()
switch c {
case '[':
level++
case ']':
level--
if level == 0 {
d.pos++
return nil
}
case '"':
err := d.SkipString()
if err != nil {
return err
}
continue
case TERMINATION_CHAR:
return d.Error("[Blaze SkipArray()] unexpected end of input, expected ']'")
}
d.pos++
}
}
func (d *Decoder) ScanArray() (int, error) {
d.SkipWhitespace()
start := d.pos
size := 0
d.pos++
for {
c := d.char()
switch c {
case ',':
size++
d.pos++
err := d.Skip()
if err != nil {
return 0, err
}
continue
case ']':
d.pos++
d.start = start
return size, nil
case TERMINATION_CHAR:
return 0, d.Error("[Blaze ScanArray()] unexpected end of input, expected ']'")
default:
size++
err := d.Skip()
if err != nil {
return 0, err
}
continue
}
}
}
func (d *Decoder) decodeArray(v reflect.Value, elemDecoder DecoderFn) error {
d.SkipWhitespace()
c := d.char()
switch c {
case '[':
d.pos++
case 'n':
err := d.ScanNull()
if err != nil {
return err
}
v.SetZero()
return nil
default:
return d.Error("[Blaze decodeArray()] invalid char, expected '[' or 'null'")
}
d.depth++
if d.depth > MAX_DEPTH {
return d.Error("[Blaze decodeArray()] max depth reached")
}
i := -1
for {
c := d.char()
d.SkipWhitespace()
switch c {
case ',':
i++
d.pos++
if i < v.Len() {
d.SkipWhitespace()
err := elemDecoder(d, v.Index(i))
if err != nil {
return err
}
} else {
err := d.Skip()
if err != nil {
return err
}
}
case ']':
d.pos++
d.depth--
return nil
case TERMINATION_CHAR:
return d.Error("[Blaze decodeArray()] unexpected end of input, expected ']'")
default:
i++
if i < v.Len() {
err := elemDecoder(d, v.Index(i))
if err != nil {
return err
}
} else {
err := d.Skip()
if err != nil {
return err
}
}
}
}
}
func newArrayDecoder(d reflect.Type) DecoderFn {
elemDecoder := newDecoderFn(d.Elem(), true)
return func(d *Decoder, v reflect.Value) error {
return d.decodeArray(v, elemDecoder)
}
}