libgo/go/golang.org/x/xerrors/errors.go

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package xerrors

import "fmt"

// errorString is a trivial implementation of error.
type errorString struct {
	s     string
	frame Frame
}

// New returns an error that formats as the given text.
//
// The returned error contains a Frame set to the caller's location and
// implements Formatter to show this information when printed with details.
func New(text string) error {
	return &errorString{text, Caller(1)}
}

func (e *errorString) Error() string {
	return e.s
}

func (e *errorString) Format(s fmt.State, v rune) { FormatError(e, s, v) }

func (e *errorString) FormatError(p Printer) (next error) {
	p.Print(e.s)
	e.frame.Format(p)
	return nil
}