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error.go
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error.go
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// Copyright (C) 2020-2021, IrineSistiana
//
// This file is part of mosdns.
//
// mosdns is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// mosdns is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package handler
import (
"errors"
"fmt"
)
type PluginError struct {
tag string
err error
}
func NewPluginError(tag string, err error) *PluginError {
return &PluginError{tag: tag, err: err}
}
func (e *PluginError) Error() string {
return fmt.Sprintf("%s: %v", e.tag, e.err)
}
func (e *PluginError) Unwrap() error {
return e.err
}
func (e *PluginError) Is(target error) bool {
return errors.Is(e.err, target)
}