forked from hprose/hprose-golang
/
float64_decoder.go
115 lines (101 loc) · 3.58 KB
/
float64_decoder.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
/**********************************************************\
| |
| hprose |
| |
| Official WebSite: http://www.hprose.com/ |
| http://www.hprose.org/ |
| |
\**********************************************************/
/**********************************************************\
* *
* io/float64_decoder.go *
* *
* hprose float64 decoder for Go. *
* *
* LastModified: Oct 15, 2016 *
* Author: Ma Bingyao <andot@hprose.com> *
* *
\**********************************************************/
package io
import (
"errors"
"math"
"reflect"
"strconv"
"time"
"github.com/hprose/hprose-golang/util"
)
func readLongAsFloat64(r *Reader) float64 {
return r.readLongAsFloat64()
}
func stringToFloat64(s string) float64 {
f, err := strconv.ParseFloat(s, 64)
if err != nil {
panic(err)
}
return f
}
func readInfinityAsFloat64(r *Reader) float64 {
return r.readInf()
}
func readUTF8CharAsFloat64(r *Reader) float64 {
return stringToFloat64(util.ByteString(r.readUTF8Slice(1)))
}
func readStringAsFloat64(r *Reader) float64 {
return stringToFloat64(r.ReadStringWithoutTag())
}
func timeToFloat64(t time.Time) float64 {
return float64(t.Unix()) + float64(t.Nanosecond())/1000000000
}
func readDateTimeAsFloat64(r *Reader) float64 {
return timeToFloat64(r.ReadDateTimeWithoutTag())
}
func readTimeAsFloat64(r *Reader) float64 {
return timeToFloat64(r.ReadTimeWithoutTag())
}
func readRefAsFloat64(r *Reader) float64 {
ref := r.readRef()
if str, ok := ref.(string); ok {
return stringToFloat64(str)
}
if t, ok := ref.(*time.Time); ok {
return timeToFloat64(*t)
}
panic(errors.New("value of type " +
reflect.TypeOf(ref).String() +
" cannot be converted to type float64"))
}
var float64Decoders = [256]func(r *Reader) float64{
'0': func(r *Reader) float64 { return 0 },
'1': func(r *Reader) float64 { return 1 },
'2': func(r *Reader) float64 { return 2 },
'3': func(r *Reader) float64 { return 3 },
'4': func(r *Reader) float64 { return 4 },
'5': func(r *Reader) float64 { return 5 },
'6': func(r *Reader) float64 { return 6 },
'7': func(r *Reader) float64 { return 7 },
'8': func(r *Reader) float64 { return 8 },
'9': func(r *Reader) float64 { return 9 },
TagNull: func(r *Reader) float64 { return 0 },
TagEmpty: func(r *Reader) float64 { return 0 },
TagFalse: func(r *Reader) float64 { return 0 },
TagTrue: func(r *Reader) float64 { return 1 },
TagNaN: func(r *Reader) float64 { return math.NaN() },
TagInfinity: readInfinityAsFloat64,
TagInteger: readLongAsFloat64,
TagLong: readLongAsFloat64,
TagDouble: func(r *Reader) float64 { return r.readFloat64() },
TagUTF8Char: readUTF8CharAsFloat64,
TagString: readStringAsFloat64,
TagDate: readDateTimeAsFloat64,
TagTime: readTimeAsFloat64,
TagRef: readRefAsFloat64,
}
func float64Decoder(r *Reader, v reflect.Value, tag byte) {
decoder := float64Decoders[tag]
if decoder != nil {
v.SetFloat(decoder(r))
return
}
castError(tag, "float64")
}