55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
package pathmatch
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import (
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"fmt"
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)
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type ScanError interface {
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InternalErrorComplainer
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ScanError()
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WrappedError() error
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}
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// internalScanError is the only underlying implementation that fits the
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// ScanError interface, in this library.
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type internalScanError struct {
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wrappedError error
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argumentIndex int
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argumentType string
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}
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// newScanError creates a new internalScanError (struct) and
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// returns it as a ScanError (interface).
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func newScanError(wrappedError error, argumentIndex int, argumentType string) ScanError {
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err := internalScanError{
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wrappedError:wrappedError,
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argumentIndex:argumentIndex,
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argumentType:argumentType,
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}
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return &err
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}
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// Error method is necessary to satisfy the 'error' interface (and the
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// ScanError interface).
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func (err *internalScanError) Error() string {
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s := fmt.Sprintf("Internal Error: Received scan error for argument #%d (%s): %q", err.argumentIndex, err.argumentType, err.wrappedError.Error())
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return s
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}
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// InternalErrorComplainer method is necessary to satisfy the 'InternalErrorComplainer' interface.
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// It exists to make this error type detectable in a Go type-switch.
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func (err *internalScanError) InternalErrorComplainer() {
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// Nothing here.
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}
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// ScanError method is necessary to satisfy the 'ScanError' interface.
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// It exists to make this error type detectable in a Go type-switch.
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func (err *internalScanError) ScanError() {
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// Nothing here.
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}
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func (err *internalScanError) WrappedError() error {
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return err.wrappedError
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}
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