Type Alias AnyTypeEntry 

pub type AnyTypeEntry = JsonAnyEntry;

👎Deprecated since 0.3.0:

renamed to JsonAnyEntry

Available on crate feature json and (crate features json or text) only.

Deprecated alias for JsonAnyEntry. Retained for one release cycle.

Aliased Type

pub struct AnyTypeEntry {
    pub type_url: &'static str,
    pub to_json: fn(&[u8]) -> Result<Value, String>,
    pub from_json: fn(Value) -> Result<Vec<u8>, String>,
    pub is_wkt: bool,
}

Fields

type_url: &'static str

The full type URL (e.g. "type.googleapis.com/google.protobuf.Duration").

to_json: fn(&[u8]) -> Result<Value, String>

Serialize: binary Any.value bytes → JSON representation of the embedded message (without @type).

from_json: fn(Value) -> Result<Vec<u8>, String>

Deserialize: JSON representation (without @type) → binary wire bytes for Any.value. Takes ownership to avoid cloning large values.

is_wkt: bool

Whether this type uses "value" wrapping in Any JSON.

WKTs like Duration, Timestamp, FieldMask, Value, Struct, ListValue, and wrapper types serialize to non-object JSON (strings, numbers, arrays). In Any, they must be wrapped: {"@type": "...", "value": <wkt_json>}.

Regular messages serialize to JSON objects and have their fields inlined: {"@type": "...", "field1": v1, "field2": v2}.

JSON-specific: textproto has no "value" wrapping distinction.