mirror of https://github.com/golang-jwt/jwt.git
48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
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//go:build go1.20
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// +build go1.20
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package jwt
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import (
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"fmt"
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)
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// Unwrap implements the multiple error unwrapping for this error type, which is
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// possible in Go 1.20.
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func (je joinedError) Unwrap() []error {
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return je.errs
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}
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// newError creates a new error message with a detailed error message. The
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// message will be prefixed with the contents of the supplied error type.
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// Additionally, more errors, that provide more context can be supplied which
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// will be appended to the message. This makes use of Go 1.20's possibility to
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// include more than one %w formatting directive in [fmt.Errorf].
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//
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// For example,
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//
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// newError("no keyfunc was provided", ErrTokenUnverifiable)
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//
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// will produce the error string
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//
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// "token is unverifiable: no keyfunc was provided"
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func newError(message string, err error, more ...error) error {
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var format string
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var args []any
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if message != "" {
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format = "%w: %s"
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args = []any{err, message}
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} else {
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format = "%w"
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args = []any{err}
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}
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for _, e := range more {
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format += ": %w"
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args = append(args, e)
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}
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err = fmt.Errorf(format, args...)
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return err
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}
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