tor-netdoc: derive ItemValue parsing/encoding for Signature

// If we find this is being used in many places, and is therefore a standard thing,

// we should arrange for the derives to be able to derive from an argument collection,

// and use that.

#[allow(dead_code)] // XXXX

pub(crate) mod keyids_directory_signature_args {

    use super::*;

    use std::result::Result;

#[cfg(feature = "incomplete")]

use crate::doc::authcert::EncodedAuthCert;

use crate::doc::authcert::{AuthCert, AuthCertKeyIds};

use crate::doc::authcert::{self, AuthCert, AuthCertKeyIds};

use crate::encode::{ItemArgument, ItemEncoder, ItemValueEncodable, NetdocEncodable, NetdocEncoder};

use crate::parse::keyword::Keyword;

use crate::parse::parser::{Section, SectionRules, SectionRulesBuilder};

    NetdocParseable, StopAt,

    ArgumentError, ItemArgumentParseable,

};

use crate::types::*;

use crate::types::{self, *};

use crate::types::relay_flags::{self, DocRelayFlags};

use crate::util::PeekableIterator;

use crate::{Error, KeywordEncodable, NetdocErrorKind as EK, NormalItemArgument, Pos, Result};

impl NormalItemArgument for DirectorySignatureHashAlgo {}

/// The signature of a single directory authority on a networkstatus document.

#[derive(Debug, Clone)]

///

/// Implements `ItemValueParseable` which parses without hashing anything;

/// this is mostly useful for use by the `SignatureItemParseable` implementation.

// XXXX that impl doesn't exist yet

#[derive(Debug, Clone, Deftly)]

#[derive_deftly(ItemValueEncodable, ItemValueParseable)]

#[non_exhaustive]

pub struct Signature {

    /// The name of the digest algorithm used to make the signature.

    pub digest_algo: DigestAlgoInSignature,

    /// Fingerprints of the keys for the authority that made

    /// this signature.

    #[deftly(netdoc(with = authcert::keyids_directory_signature_args))]

    pub key_ids: AuthCertKeyIds,

    /// The signature itself.

    #[deftly(netdoc(object(label = "SIGNATURE"), with = types::raw_data_object))]

    pub signature: Vec<u8>,

}