nurago/pkg/enumcache/example_enumcache_test.go at main · tecnickcom/nurago · GitHub

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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
package enumcache_test

import (
	"fmt"
	"log"

	"github.com/tecnickcom/nurago/pkg/enumcache"
)

func ExampleNew() {
	// create a new cache
	ec := enumcache.New()

	// add an entry
	ec.Set(1, "alpha")

	// get the numerical ID associated to a string
	id, err := ec.ID("alpha")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(id)

	// get the string name associated to a numerical ID
	name, err := ec.Name(1)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(name)

	// Output:
	// 1
	// alpha
}

func ExampleEnumCache_SetAllIDByName() {
	// create a new cache
	ec := enumcache.New()

	// define cache entries indexed by string
	e := enumcache.IDByName{
		"first":  11,
		"second": 23,
		"third":  31,
	}

	// populate the cache with the specified entries
	ec.SetAllIDByName(e)

	// get the numerical ID associated to a string
	id, err := ec.ID("second")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(id)

	// get the string name associated to a numerical ID
	name, err := ec.Name(23)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(name)

	// Output:
	// 23
	// second
}

func ExampleEnumCache_SetAllNameByID() {
	// create a new cache
	ec := enumcache.New()

	// define cache entries indexed by numerical ID
	e := enumcache.NameByID{
		11: "first",
		23: "second",
		31: "third",
	}

	// populate the cache with the specified entries
	ec.SetAllNameByID(e)

	// get the numerical ID associated to a string
	id, err := ec.ID("second")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(id)

	// get the string name associated to a numerical ID
	name, err := ec.Name(23)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(name)

	// Output:
	// 23
	// second
}

func ExampleEnumCache_SortNames() {
	// create a new cache
	ec := enumcache.New()

	// define cache entries indexed by numerical ID
	e := enumcache.NameByID{
		1:  "delta",
		2:  "charlie",
		4:  "bravo",
		8:  "foxtrot",
		16: "echo",
		32: "alpha",
	}

	// populate the cache with the specified entries
	ec.SetAllNameByID(e)

	// get the sorted list of names
	sorted := ec.SortNames()

	fmt.Println(sorted)

	// Output:
	// [alpha bravo charlie delta echo foxtrot]
}

func ExampleEnumCache_SortIDs() {
	// create a new cache
	ec := enumcache.New()

	// define cache entries indexed by numerical ID
	e := enumcache.NameByID{
		55: "delta",
		33: "charlie",
		22: "bravo",
		66: "foxtrot",
		44: "echo",
		11: "alpha",
	}

	// populate the cache with the specified entries
	ec.SetAllNameByID(e)

	// get the sorted list of IDs
	sorted := ec.SortIDs()

	fmt.Println(sorted)

	// Output:
	// [11 22 33 44 55 66]
}

func ExampleEnumCache_DecodeBinaryMap() {
	// create a new cache
	ec := enumcache.New()

	ec.Set(1, "first")    // 00000001
	ec.Set(2, "second")   // 00000010
	ec.Set(4, "third")    // 00000100
	ec.Set(8, "fourth")   // 00001000
	ec.Set(16, "fifth")   // 00010000
	ec.Set(32, "sixth")   // 00100000
	ec.Set(64, "seventh") // 01000000
	ec.Set(128, "eighth") // 10000000

	// convert binary code to a slice of strings
	s, err := ec.DecodeBinaryMap(0b00101010) // 42
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(s)

	// Output:
	// [second fourth sixth]
}

func ExampleEnumCache_EncodeBinaryMap() {
	// create a new cache
	ec := enumcache.New()

	ec.Set(1, "first")    // 00000001
	ec.Set(2, "second")   // 00000010
	ec.Set(4, "third")    // 00000100
	ec.Set(8, "fourth")   // 00001000
	ec.Set(16, "fifth")   // 00010000
	ec.Set(32, "sixth")   // 00100000
	ec.Set(64, "seventh") // 01000000
	ec.Set(128, "eighth") // 10000000

	// convert a slice of string to the equivalent binary code
	v, err := ec.EncodeBinaryMap([]string{"second", "fourth", "sixth"})
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(v)

	// Output:
	// 42
}