Enum CredentialSubject 

pub enum CredentialSubject {
    Basic(CredentialSubjectBasic),
    Statement(CredentialSubjectStatement),
    Authority(CredentialSubjectAuthority),
    Delegation(CredentialSubjectDelegation),
    Membership(CredentialSubjectMembership),
}

This represents all possible credential subjects The order of the enum is important as it will match on first match

Variants

Basic(CredentialSubjectBasic)

Credential Subject of just id Used by a community-issued VMC, and by VRC, VIC and VPC

Statement(CredentialSubjectStatement)

Verifiable Statement Credential subject: id, predicate, object.

Unambiguous under the untagged match: no other DTG subject carries a predicate or an object, and both are REQUIRED here. Unmodelled members are kept rather than refused, because a verifier MUST ignore members a profile does not define.

Authority(CredentialSubjectAuthority)

Verifiable Authority Credential subject.

Unambiguous under the untagged match: no other DTG subject carries an authority member, and deny_unknown_fields keeps a subject that does not have one from landing here.

Delegation(CredentialSubjectDelegation)

Verifiable Delegation Credential subject.

Unambiguous for the same reason as CredentialSubject::Authority: delegation is carried by no other DTG subject.

Membership(CredentialSubjectMembership)

Membership Credential subject, carrying the digestMultibase that a member-issued VMC MUST set and a community-issued one MUST omit.

{ id } lands on Basic first

The grant’s shape is also CredentialSubject::Basic’s, which the untagged match takes first; only the credential’s type says it is a membership. So TryFrom<DTGCommon> for DTGCredential re-wraps a Basic subject as this one when type includes MembershipCredential, and a Membership subject reaching a matcher has been through that normalization. The acknowledgement’s { id, digestMultibase } lands here directly.

Trait Implementations

impl Clone for CredentialSubject

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CredentialSubject

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CredentialSubject

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CredentialSubject

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.