bth/um
Watch
1
Fork
You've already forked um
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

insane reflection premature optimization

Browse source
This commit is contained in:
bth 2026-01-17 22:27:09 -08:00
commit 123eabca54
1 changed files with 20 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

25
tag/tag.go
View file

@ -4,15 +4,19 @@ import (
"fmt"
"reflect"
"strings"
"unicode"
)
var opts struct {
query string `name:"query" help:"tag query"`
invert bool `name:"invert" help:"invert match"`
Query string `name:"query" help:"tag query"`
Invert bool `name:"invert" help:"invert match"`
}
func stripDashes(flag string) string {
return strings.TrimPrefix(flag, "--")
func flagToField(flag string) string {
s := strings.TrimPrefix(flag, "--")
r := []rune(s)
r[0] = unicode.ToUpper(r[0])
return string(r)
}
func Tag(args []string) {
@ -22,7 +26,7 @@ func Tag(args []string) {
field := reflect.StructField{}
found := false
for _, a := range args {
field, found = t.FieldByName(stripDashes(a))
field, found = t.FieldByName(flagToField(a))
if !found {
fmt.Printf("%s not found in opts\n", a)
return
@ -33,6 +37,17 @@ func Tag(args []string) {
fmt.Printf("field name: %#v\n", tag.Get("name"))
fmt.Printf("field help: %#v\n", tag.Get("help"))
v := reflect.ValueOf(opts)
vfield := reflect.Value{}
for _, a := range args {
vfield = v.FieldByName(flagToField(a))
if vfield.IsValid() && vfield.CanSet() && vfield.Kind() == reflect.Bool {
vfield.SetBool(true)
fmt.Printf("vfield: %#v\n", vfield)
}
}
fmt.Printf("vfield: %#v\n", vfield)
fmt.Printf("opts: %#v\n", opts)
// for i := 0; i < t.NumField(); i++ {
// field := t.Field(i)
// if alias, ok := field.Tag.Lookup("name"); ok {