mirror of
https://github.com/go-gitea/gitea.git
synced 2025-07-16 02:23:05 +02:00
0b31272c7e
Backport #35036 by @lunny Fix #35030 --------- Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
64 lines
1.0 KiB
Go
64 lines
1.0 KiB
Go
// Copyright 2024 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package optional
|
|
|
|
import "strconv"
|
|
|
|
type Option[T any] []T
|
|
|
|
func None[T any]() Option[T] {
|
|
return nil
|
|
}
|
|
|
|
func Some[T any](v T) Option[T] {
|
|
return Option[T]{v}
|
|
}
|
|
|
|
func FromPtr[T any](v *T) Option[T] {
|
|
if v == nil {
|
|
return None[T]()
|
|
}
|
|
return Some(*v)
|
|
}
|
|
|
|
func FromMapLookup[K comparable, V any](m map[K]V, k K) Option[V] {
|
|
if v, ok := m[k]; ok {
|
|
return Some(v)
|
|
}
|
|
return None[V]()
|
|
}
|
|
|
|
func FromNonDefault[T comparable](v T) Option[T] {
|
|
var zero T
|
|
if v == zero {
|
|
return None[T]()
|
|
}
|
|
return Some(v)
|
|
}
|
|
|
|
func (o Option[T]) Has() bool {
|
|
return o != nil
|
|
}
|
|
|
|
func (o Option[T]) Value() T {
|
|
var zero T
|
|
return o.ValueOrDefault(zero)
|
|
}
|
|
|
|
func (o Option[T]) ValueOrDefault(v T) T {
|
|
if o.Has() {
|
|
return o[0]
|
|
}
|
|
return v
|
|
}
|
|
|
|
// ParseBool get the corresponding optional.Option[bool] of a string using strconv.ParseBool
|
|
func ParseBool(s string) Option[bool] {
|
|
v, e := strconv.ParseBool(s)
|
|
if e != nil {
|
|
return None[bool]()
|
|
}
|
|
return Some(v)
|
|
}
|