Struct CidCapability 

#[non_exhaustive]
pub struct CidCapability {
    pub extra: Map<String, Value>,
}

Value object of the urn:ietf:params:jmap:cid capability (draft-atwood-jmap-cid-00 §3).

The draft currently specifies an empty value object: when a server advertises CID, the value of the JMAP_CID_URI key in both the session-level capabilities object and per-account accountCapabilities is {}. The #[non_exhaustive] attribute keeps the door open for the draft to add capability-level fields (e.g. an enumerated digest algorithm set when CID generalises beyond SHA-256) without a breaking change to consumers that destructure the struct.

The extra field is the workspace extras-preservation surface (workspace AGENTS.md “extras-preservation policy”): unknown vendor / site / future IETF fields on the wire JSON survive deserialize and serialize untouched.

Example

use jmap_cid_types::CidCapability;

// Empty value object per the current draft revision.
let cap: CidCapability = serde_json::from_str("{}")?;
assert!(cap.extra.is_empty());

// Vendor extension survives round-trip.
let cap: CidCapability = serde_json::from_str(
    r#"{"acmeCorpFastDigest": true}"#,
)?;
assert_eq!(
    cap.extra.get("acmeCorpFastDigest"),
    Some(&serde_json::Value::Bool(true)),
);

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

extra: Map<String, Value>

Catch-all for vendor / site / future-IETF fields not covered by the typed fields above. Preserves unknown fields across deserialize/serialize round-trip per workspace policy.

Trait Implementations

impl Clone for CidCapability

fn clone(&self) -> CidCapability

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CidCapability

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

Formats the value using the given formatter.

impl Default for CidCapability

fn default() -> CidCapability

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CidCapability

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CidCapability

fn eq(&self, other: &CidCapability) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for CidCapability

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CidCapability