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47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package generic
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import (
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ET "github.com/IBM/fp-go/either"
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G "github.com/IBM/fp-go/internal/bracket"
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I "github.com/IBM/fp-go/io/generic"
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)
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// Bracket makes sure that a resource is cleaned up in the event of an error. The release action is called regardless of
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// whether the body action returns and error or not.
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func Bracket[
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GA ~func() ET.Either[E, A],
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GB ~func() ET.Either[E, B],
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GANY ~func() ET.Either[E, ANY],
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E, A, B, ANY any](
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acquire GA,
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use func(A) GB,
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release func(A, ET.Either[E, B]) GANY,
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) GB {
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return G.Bracket[GA, GB, GANY, ET.Either[E, B], A, B](
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I.Of[GB, ET.Either[E, B]],
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MonadChain[GA, GB, E, A, B],
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I.MonadChain[GB, GB, ET.Either[E, B], ET.Either[E, B]],
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MonadChain[GANY, GB, E, ANY, B],
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acquire,
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use,
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release,
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)
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}
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