From dd136858f1ea40ad3c94191d647487fa4f31926c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 18 Oct 2024 20:33:49 +0200 Subject: Adding upstream version 9.0.0. Signed-off-by: Daniel Baumann --- modules/optional/option.go | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 modules/optional/option.go (limited to 'modules/optional/option.go') diff --git a/modules/optional/option.go b/modules/optional/option.go new file mode 100644 index 0000000..af9e5ac --- /dev/null +++ b/modules/optional/option.go @@ -0,0 +1,45 @@ +// Copyright 2024 The Gitea Authors. All rights reserved. +// SPDX-License-Identifier: MIT + +package optional + +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 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 +} -- cgit v1.2.3