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87 lines
1.3 KiB
87 lines
1.3 KiB
package errors
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import (
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"fmt"
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"v2ray.com/core/common/serial"
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)
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type HasInnerError interface {
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Inner() error
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}
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type Error struct {
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message string
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inner error
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}
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func (v *Error) Error() string {
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return v.message
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}
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func (v *Error) Inner() error {
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if v.inner == nil {
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return nil
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}
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return v.inner
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}
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func New(msg ...interface{}) error {
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return &Error{
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message: serial.Concat(msg),
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}
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}
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func Base(err error) ErrorBuilder {
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return ErrorBuilder{
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error: err,
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}
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}
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func Format(format string, values ...interface{}) error {
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return New(fmt.Sprintf(format, values...))
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}
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// Cause returns the root cause of this error.
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func Cause(err error) error {
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if err == nil {
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return nil
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}
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for {
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inner, ok := err.(HasInnerError)
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if !ok {
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break
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}
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if inner.Inner() == nil {
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break
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}
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err = inner.Inner()
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}
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return err
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}
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type ErrorBuilder struct {
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error
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}
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func (v ErrorBuilder) Message(msg ...interface{}) error {
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if v.error == nil {
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return nil
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}
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return &Error{
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message: serial.ToString(msg) + " > " + v.error.Error(),
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inner: v.error,
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}
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}
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func (v ErrorBuilder) Format(format string, values ...interface{}) error {
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if v.error == nil {
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return nil
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}
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return &Error{
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message: fmt.Sprintf(format, values...) + " > " + v.error.Error(),
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inner: v.error,
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}
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}
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