// Package ident is the reference implementation of system and member
// identifiers.
package ident

import (
	"errors"
	"strconv"
)

// ErrNewline is returned for identifiers found to contain newline characters.
var ErrNewline = errors.New("identifier contains newline characters")

// UnexpectedSizeError describes a malformed string representation of an
// identifier, with unexpected length.
type UnexpectedSizeError struct {
	Data []byte
	Want int
}

func (e *UnexpectedSizeError) Error() string {
	return "got " + strconv.Itoa(len(e.Data)) + " bytes for " +
		"a " + strconv.Itoa(e.Want) + "-byte identifier"
}