51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
// Copyright (c) 2024 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package blake256
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// ErrorKind identifies a kind of error.
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type ErrorKind string
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// These constants are used to identify a specific ErrorKind.
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const (
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// ErrMalformedState indicates a serialized intermediate state is malformed
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// in some way such as not having at least the expected number of bytes.
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ErrMalformedState = ErrorKind("ErrMalformedState")
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// ErrMismatchedState indicates a serialized intermediate state is not for
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// the hash type that is attempting to restore it. For example, it will be
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// returned when attempting to restore a BLAKE-256 intermediate state with
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// a BLAKE-224 hasher.
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ErrMismatchedState = ErrorKind("ErrMismatchedState")
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)
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// Error satisfies the error interface and prints human-readable errors.
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func (e ErrorKind) Error() string {
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return string(e)
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}
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// Error identifies an error related to restoring an intermediate hashing state.
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//
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// It has full support for [errors.Is] and [errors.As], so the caller can
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// ascertain the specific reason for the error by checking the underlying error.
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type Error struct {
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Err error
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Description string
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}
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// Error satisfies the error interface and prints human-readable errors.
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func (e Error) Error() string {
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return e.Description
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}
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// Unwrap returns the underlying wrapped error.
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func (e Error) Unwrap() error {
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return e.Err
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}
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// makeError creates an [Error] given a set of arguments.
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func makeError(kind ErrorKind, desc string) Error {
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return Error{Err: kind, Description: desc}
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}
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