signature/policy_reference_match.go
func parseImageAndDockerReference(image types.UnparsedImage, s2 string) (reference.Named, reference.Named, error) {
	r1 := image.Reference().DockerReference()
	if r1 == nil {
		return nil, nil, PolicyRequirementError(fmt.Sprintf("Docker reference match attempted on image %s with no known Docker reference identity",
			transports.ImageName(image.Reference())))
	}
	r2, err := reference.ParseNormalizedNamed(s2)
	if err != nil {
		return nil, nil, err
	}
	return r1, r2, nil
}
func parseImageAndDockerReference(image types.UnparsedImage, s2 string) (reference.Named, reference.Named, error) {
	r1 := image.Reference().DockerReference()
	if r1 == nil {
		return nil, nil, PolicyRequirementError(fmt.Sprintf("Docker reference match attempted on image %s with no known Docker reference identity",
			transports.ImageName(image.Reference())))
	}
	r2, err := reference.ParseNormalizedNamed(s2)
	if err != nil {
		return nil, nil, err
	}
	return r1, r2, nil
}
func parseImageAndDockerReference ( image types . UnparsedImage , s2 string ) ( reference . Named , reference . Named , error ) { r1 := image . Reference ( ) . DockerReference ( ) if r1 == nil { return nil , nil , PolicyRequirementError ( fmt . Sprintf ( " " , transports . ImageName ( image . Reference ( ) ) ) ) } r2 , err := reference . ParseNormalizedNamed ( s2 ) if err != nil { return nil , nil , err } return r1 , r2 , nil }
// parseImageAndDockerReference converts an image and a reference string into two parsed entities, failing on any error and handling unidentified images.
parseImageAndDockerReference converts an image and a reference string into two parsed entities failing on any error and handling unidentified images .