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
|
package tygoja
import (
"fmt"
"strconv"
"strings"
)
func isProbablyIotaType(groupType string) bool {
groupType = strings.Trim(groupType, "()")
return groupType == "iota" || strings.HasPrefix(groupType, "iota +") || strings.HasSuffix(groupType, "+ iota")
}
func basicIotaOffsetValueParse(groupType string) (int, error) {
if !isProbablyIotaType(groupType) {
panic("can't parse non-iota type")
}
groupType = strings.Trim(groupType, "()")
if groupType == "iota" {
return 0, nil
}
parts := strings.Split(groupType, " + ")
var numPart string
if parts[0] == "iota" {
numPart = parts[1]
} else {
numPart = parts[0]
}
addValue, err := strconv.ParseInt(numPart, 10, 64)
if err != nil {
return 0, fmt.Errorf("Failed to guesstimate initial iota value for \"%s\": %w", groupType, err)
}
return int(addValue), nil
}
|
