48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
package treeprint
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import (
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"reflect"
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"strings"
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)
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func isEmpty(v *reflect.Value) bool {
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switch v.Kind() {
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case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
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return v.Len() == 0
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case reflect.Bool:
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return !v.Bool()
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return v.Int() == 0
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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return v.Uint() == 0
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case reflect.Float32, reflect.Float64:
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return v.Float() == 0
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case reflect.Interface, reflect.Ptr:
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return v.IsNil()
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}
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return false
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}
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func tagSpec(tag string) (name string, omit bool) {
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parts := strings.Split(tag, ",")
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if len(parts) < 2 {
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return tag, false
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}
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if parts[1] == "omitempty" {
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return parts[0], true
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}
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return parts[0], false
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}
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func filterTags(tag reflect.StructTag) string {
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tags := strings.Split(string(tag), " ")
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filtered := make([]string, 0, len(tags))
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for i := range tags {
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if strings.HasPrefix(tags[i], "tree:") {
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continue
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}
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filtered = append(filtered, tags[i])
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}
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return strings.Join(filtered, " ")
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}
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