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errors.go
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errors.go
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package state
import (
"errors"
"fmt"
)
// InvalidExtensionError is an error for invalid extension of the state
type InvalidExtensionError struct {
err error
}
func NewInvalidExtensionError(msg string) error {
return NewInvalidExtensionErrorf(msg)
}
func NewInvalidExtensionErrorf(msg string, args ...interface{}) error {
return InvalidExtensionError{
err: fmt.Errorf(msg, args...),
}
}
func (e InvalidExtensionError) Unwrap() error {
return e.err
}
func (e InvalidExtensionError) Error() string {
return e.err.Error()
}
// IsInvalidExtensionError returns whether the given error is an InvalidExtensionError error
func IsInvalidExtensionError(err error) bool {
return errors.As(err, &InvalidExtensionError{})
}
// OutdatedExtensionError is an error for the extension of the state being outdated.
// Being outdated doesn't mean it's invalid or not.
// Knowing whether an outdated extension is an invalid extension or not would
// take more state queries.
type OutdatedExtensionError struct {
err error
}
func NewOutdatedExtensionError(msg string) error {
return NewOutdatedExtensionErrorf(msg)
}
func NewOutdatedExtensionErrorf(msg string, args ...interface{}) error {
return OutdatedExtensionError{
err: fmt.Errorf(msg, args...),
}
}
func (e OutdatedExtensionError) Unwrap() error {
return e.err
}
func (e OutdatedExtensionError) Error() string {
return e.err.Error()
}
func IsOutdatedExtensionError(err error) bool {
return errors.As(err, &OutdatedExtensionError{})
}
// NoValidChildBlockError is a sentinel error when the case where a certain block has
// no valid child.
type NoValidChildBlockError struct {
err error
}
func NewNoValidChildBlockError(msg string) error {
return NoValidChildBlockError{
err: fmt.Errorf(msg),
}
}
func NewNoValidChildBlockErrorf(msg string, args ...interface{}) error {
return NewNoValidChildBlockError(fmt.Sprintf(msg, args...))
}
func (e NoValidChildBlockError) Unwrap() error {
return e.err
}
func (e NoValidChildBlockError) Error() string {
return e.err.Error()
}
func IsNoValidChildBlockError(err error) bool {
return errors.As(err, &NoValidChildBlockError{})
}