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errors.go
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errors.go
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/*
* Copyright (C) 2018 The DNA Authors
* This file is part of The DNA library.
*
* The DNA is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The DNA 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with The DNA. If not, see <http://www.gnu.org/licenses/>.
*/
package errors
import (
"errors"
)
const callStackDepth = 10
type DetailError interface {
error
ErrCoder
CallStacker
GetRoot() error
}
func NewErr(errmsg string) error {
return errors.New(errmsg)
}
func NewDetailErr(err error, errcode ErrCode, errmsg string) DetailError {
if err == nil {
return nil
}
onterr, ok := err.(ontError)
if !ok {
onterr.root = err
onterr.errmsg = err.Error()
onterr.callstack = getCallStack(0, callStackDepth)
onterr.code = errcode
}
if errmsg != "" {
onterr.errmsg = errmsg + ": " + onterr.errmsg
}
return onterr
}
func RootErr(err error) error {
if err, ok := err.(DetailError); ok {
return err.GetRoot()
}
return err
}