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107c1cdb ND |
1 | package msgpack |
2 | ||
3 | import ( | |
4 | "math" | |
5 | "reflect" | |
6 | ||
7 | "github.com/vmihailenco/msgpack/codes" | |
8 | ) | |
9 | ||
10 | // EncodeUint8 encodes an uint8 in 2 bytes preserving type of the number. | |
11 | func (e *Encoder) EncodeUint8(n uint8) error { | |
12 | return e.write1(codes.Uint8, n) | |
13 | } | |
14 | ||
15 | func (e *Encoder) encodeUint8Cond(n uint8) error { | |
16 | if e.useCompact { | |
17 | return e.EncodeUint(uint64(n)) | |
18 | } | |
19 | return e.EncodeUint8(n) | |
20 | } | |
21 | ||
22 | // EncodeUint16 encodes an uint16 in 3 bytes preserving type of the number. | |
23 | func (e *Encoder) EncodeUint16(n uint16) error { | |
24 | return e.write2(codes.Uint16, n) | |
25 | } | |
26 | ||
27 | func (e *Encoder) encodeUint16Cond(n uint16) error { | |
28 | if e.useCompact { | |
29 | return e.EncodeUint(uint64(n)) | |
30 | } | |
31 | return e.EncodeUint16(n) | |
32 | } | |
33 | ||
34 | // EncodeUint32 encodes an uint16 in 5 bytes preserving type of the number. | |
35 | func (e *Encoder) EncodeUint32(n uint32) error { | |
36 | return e.write4(codes.Uint32, n) | |
37 | } | |
38 | ||
39 | func (e *Encoder) encodeUint32Cond(n uint32) error { | |
40 | if e.useCompact { | |
41 | return e.EncodeUint(uint64(n)) | |
42 | } | |
43 | return e.EncodeUint32(n) | |
44 | } | |
45 | ||
46 | // EncodeUint64 encodes an uint16 in 9 bytes preserving type of the number. | |
47 | func (e *Encoder) EncodeUint64(n uint64) error { | |
48 | return e.write8(codes.Uint64, n) | |
49 | } | |
50 | ||
51 | func (e *Encoder) encodeUint64Cond(n uint64) error { | |
52 | if e.useCompact { | |
53 | return e.EncodeUint(n) | |
54 | } | |
55 | return e.EncodeUint64(n) | |
56 | } | |
57 | ||
58 | // EncodeInt8 encodes an int8 in 2 bytes preserving type of the number. | |
59 | func (e *Encoder) EncodeInt8(n int8) error { | |
60 | return e.write1(codes.Int8, uint8(n)) | |
61 | } | |
62 | ||
63 | func (e *Encoder) encodeInt8Cond(n int8) error { | |
64 | if e.useCompact { | |
65 | return e.EncodeInt(int64(n)) | |
66 | } | |
67 | return e.EncodeInt8(n) | |
68 | } | |
69 | ||
70 | // EncodeInt16 encodes an int16 in 3 bytes preserving type of the number. | |
71 | func (e *Encoder) EncodeInt16(n int16) error { | |
72 | return e.write2(codes.Int16, uint16(n)) | |
73 | } | |
74 | ||
75 | func (e *Encoder) encodeInt16Cond(n int16) error { | |
76 | if e.useCompact { | |
77 | return e.EncodeInt(int64(n)) | |
78 | } | |
79 | return e.EncodeInt16(n) | |
80 | } | |
81 | ||
82 | // EncodeInt32 encodes an int32 in 5 bytes preserving type of the number. | |
83 | func (e *Encoder) EncodeInt32(n int32) error { | |
84 | return e.write4(codes.Int32, uint32(n)) | |
85 | } | |
86 | ||
87 | func (e *Encoder) encodeInt32Cond(n int32) error { | |
88 | if e.useCompact { | |
89 | return e.EncodeInt(int64(n)) | |
90 | } | |
91 | return e.EncodeInt32(n) | |
92 | } | |
93 | ||
94 | // EncodeInt64 encodes an int64 in 9 bytes preserving type of the number. | |
95 | func (e *Encoder) EncodeInt64(n int64) error { | |
96 | return e.write8(codes.Int64, uint64(n)) | |
97 | } | |
98 | ||
99 | func (e *Encoder) encodeInt64Cond(n int64) error { | |
100 | if e.useCompact { | |
101 | return e.EncodeInt(n) | |
102 | } | |
103 | return e.EncodeInt64(n) | |
104 | } | |
105 | ||
106 | // EncodeUnsignedNumber encodes an uint64 in 1, 2, 3, 5, or 9 bytes. | |
107 | // Type of the number is lost during encoding. | |
108 | func (e *Encoder) EncodeUint(n uint64) error { | |
109 | if n <= math.MaxInt8 { | |
110 | return e.w.WriteByte(byte(n)) | |
111 | } | |
112 | if n <= math.MaxUint8 { | |
113 | return e.EncodeUint8(uint8(n)) | |
114 | } | |
115 | if n <= math.MaxUint16 { | |
116 | return e.EncodeUint16(uint16(n)) | |
117 | } | |
118 | if n <= math.MaxUint32 { | |
119 | return e.EncodeUint32(uint32(n)) | |
120 | } | |
121 | return e.EncodeUint64(uint64(n)) | |
122 | } | |
123 | ||
124 | // EncodeNumber encodes an int64 in 1, 2, 3, 5, or 9 bytes. | |
125 | // Type of number is lost during encoding. | |
126 | func (e *Encoder) EncodeInt(n int64) error { | |
127 | if n >= 0 { | |
128 | return e.EncodeUint(uint64(n)) | |
129 | } | |
130 | if n >= int64(int8(codes.NegFixedNumLow)) { | |
131 | return e.w.WriteByte(byte(n)) | |
132 | } | |
133 | if n >= math.MinInt8 { | |
134 | return e.EncodeInt8(int8(n)) | |
135 | } | |
136 | if n >= math.MinInt16 { | |
137 | return e.EncodeInt16(int16(n)) | |
138 | } | |
139 | if n >= math.MinInt32 { | |
140 | return e.EncodeInt32(int32(n)) | |
141 | } | |
142 | return e.EncodeInt64(int64(n)) | |
143 | } | |
144 | ||
145 | func (e *Encoder) EncodeFloat32(n float32) error { | |
146 | return e.write4(codes.Float, math.Float32bits(n)) | |
147 | } | |
148 | ||
149 | func (e *Encoder) EncodeFloat64(n float64) error { | |
150 | return e.write8(codes.Double, math.Float64bits(n)) | |
151 | } | |
152 | ||
153 | func (e *Encoder) write1(code codes.Code, n uint8) error { | |
154 | e.buf = e.buf[:2] | |
155 | e.buf[0] = byte(code) | |
156 | e.buf[1] = byte(n) | |
157 | return e.write(e.buf) | |
158 | } | |
159 | ||
160 | func (e *Encoder) write2(code codes.Code, n uint16) error { | |
161 | e.buf = e.buf[:3] | |
162 | e.buf[0] = byte(code) | |
163 | e.buf[1] = byte(n >> 8) | |
164 | e.buf[2] = byte(n) | |
165 | return e.write(e.buf) | |
166 | } | |
167 | ||
168 | func (e *Encoder) write4(code codes.Code, n uint32) error { | |
169 | e.buf = e.buf[:5] | |
170 | e.buf[0] = byte(code) | |
171 | e.buf[1] = byte(n >> 24) | |
172 | e.buf[2] = byte(n >> 16) | |
173 | e.buf[3] = byte(n >> 8) | |
174 | e.buf[4] = byte(n) | |
175 | return e.write(e.buf) | |
176 | } | |
177 | ||
178 | func (e *Encoder) write8(code codes.Code, n uint64) error { | |
179 | e.buf = e.buf[:9] | |
180 | e.buf[0] = byte(code) | |
181 | e.buf[1] = byte(n >> 56) | |
182 | e.buf[2] = byte(n >> 48) | |
183 | e.buf[3] = byte(n >> 40) | |
184 | e.buf[4] = byte(n >> 32) | |
185 | e.buf[5] = byte(n >> 24) | |
186 | e.buf[6] = byte(n >> 16) | |
187 | e.buf[7] = byte(n >> 8) | |
188 | e.buf[8] = byte(n) | |
189 | return e.write(e.buf) | |
190 | } | |
191 | ||
192 | func encodeUint8CondValue(e *Encoder, v reflect.Value) error { | |
193 | return e.encodeUint8Cond(uint8(v.Uint())) | |
194 | } | |
195 | ||
196 | func encodeUint16CondValue(e *Encoder, v reflect.Value) error { | |
197 | return e.encodeUint16Cond(uint16(v.Uint())) | |
198 | } | |
199 | ||
200 | func encodeUint32CondValue(e *Encoder, v reflect.Value) error { | |
201 | return e.encodeUint32Cond(uint32(v.Uint())) | |
202 | } | |
203 | ||
204 | func encodeUint64CondValue(e *Encoder, v reflect.Value) error { | |
205 | return e.encodeUint64Cond(v.Uint()) | |
206 | } | |
207 | ||
208 | func encodeInt8CondValue(e *Encoder, v reflect.Value) error { | |
209 | return e.encodeInt8Cond(int8(v.Int())) | |
210 | } | |
211 | ||
212 | func encodeInt16CondValue(e *Encoder, v reflect.Value) error { | |
213 | return e.encodeInt16Cond(int16(v.Int())) | |
214 | } | |
215 | ||
216 | func encodeInt32CondValue(e *Encoder, v reflect.Value) error { | |
217 | return e.encodeInt32Cond(int32(v.Int())) | |
218 | } | |
219 | ||
220 | func encodeInt64CondValue(e *Encoder, v reflect.Value) error { | |
221 | return e.encodeInt64Cond(v.Int()) | |
222 | } | |
223 | ||
224 | func encodeFloat32Value(e *Encoder, v reflect.Value) error { | |
225 | return e.EncodeFloat32(float32(v.Float())) | |
226 | } | |
227 | ||
228 | func encodeFloat64Value(e *Encoder, v reflect.Value) error { | |
229 | return e.EncodeFloat64(v.Float()) | |
230 | } |