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error.go
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error.go
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// Copyright (c) 2021 The Decred developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package stdscript
// ErrorKind identifies a kind of error.
type ErrorKind string
// These constants are used to identify a specific ErrorKind.
const (
// ErrUnsupportedScriptVersion indicates that a given script version is not
// supported.
ErrUnsupportedScriptVersion = ErrorKind("ErrUnsupportedScriptVersion")
// ErrTooManyRequiredSigs is returned from MultiSigScript when the
// specified number of required signatures is larger than the number of
// provided public keys.
ErrTooManyRequiredSigs = ErrorKind("ErrTooManyRequiredSigs")
// ErrPubKeyType is returned when a script contains invalid public keys.
ErrPubKeyType = ErrorKind("ErrPubKeyType")
// ErrTooMuchNullData is returned when attempting to generate a
// provably-pruneable script with data that exceeds the maximum allowed
// length.
ErrTooMuchNullData = ErrorKind("ErrTooMuchNullData")
)
// Error satisfies the error interface and prints human-readable errors.
func (e ErrorKind) Error() string {
return string(e)
}
// Error identifies an script-related error.
//
// It has full support for errors.Is and errors.As, so the caller can ascertain
// the specific reason for the error by checking the underlying error.
type Error struct {
Err error
Description string
}
// Error satisfies the error interface and prints human-readable errors.
func (e Error) Error() string {
return e.Description
}
// Unwrap returns the underlying wrapped error.
func (e Error) Unwrap() error {
return e.Err
}
// makeError creates an Error given a set of arguments.
func makeError(kind ErrorKind, desc string) Error {
return Error{Err: kind, Description: desc}
}