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45 lines
667 B
45 lines
667 B
// Copyright 2024 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package optional
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type Option[T any] []T
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func None[T any]() Option[T] {
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return nil
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}
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func Some[T any](v T) Option[T] {
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return Option[T]{v}
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}
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func FromPtr[T any](v *T) Option[T] {
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if v == nil {
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return None[T]()
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}
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return Some(*v)
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}
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func FromNonDefault[T comparable](v T) Option[T] {
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var zero T
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if v == zero {
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return None[T]()
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}
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return Some(v)
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}
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func (o Option[T]) Has() bool {
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return o != nil
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}
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func (o Option[T]) Value() T {
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var zero T
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return o.ValueOrDefault(zero)
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}
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func (o Option[T]) ValueOrDefault(v T) T {
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if o.Has() {
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return o[0]
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}
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return v
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}
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