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https://github.com/superseriousbusiness/gotosocial.git
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67 lines
2 KiB
Go
67 lines
2 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package gtserror
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import (
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"errors"
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"fmt"
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)
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// MultiError allows encapsulating multiple
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// errors under a singular instance, which
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// is useful when you only want to log on
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// errors, not return early / bubble up.
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type MultiError struct {
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e []error
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}
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// NewMultiError returns a *MultiError with
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// the capacity of its underlying error slice
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// set to the provided value.
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//
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// This capacity can be exceeded if necessary,
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// but it saves a teeny tiny bit of memory if
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// callers set it correctly.
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//
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// If you don't know in advance what the capacity
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// must be, just use new(MultiError) instead.
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func NewMultiError(capacity int) *MultiError {
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return &MultiError{
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e: make([]error, 0, capacity),
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}
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}
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// Append the given error to the MultiError.
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func (m *MultiError) Append(err error) {
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m.e = append(m.e, err)
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}
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// Append the given format string to the MultiError.
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//
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// It is valid to use %w in the format string
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// to wrap any other errors.
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func (m *MultiError) Appendf(format string, args ...any) {
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m.e = append(m.e, fmt.Errorf(format, args...))
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}
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// Combine the MultiError into a single error.
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//
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// Unwrap will work on the returned error as expected.
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func (m MultiError) Combine() error {
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return errors.Join(m.e...)
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}
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