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id_from_object

mkit_core::object

Function id_from_object 

Source 
pub fn id_from_object(obj: &Object, bytes: &[u8]) -> Hash
Expand description

Content id of an already-decoded object whose canonical encoding is bytes. A merkelized type (Tree / ChunkedBlob) is addressed by its BMT root, computed from the decoded struct; every other type is BLAKE3 of bytes, reusing the caller’s buffer (no re-serialize — bytes may be up to ~1 GiB).

This is the bytes-reusing twin of Object::id; both share the same merkle_id dispatch, so a merkelized type keys identically whether addressed from the decoded struct (native store) or from bytes the caller already holds (the pack reader, the mkit-wasm encoder).

§Precondition

For a byte-hashed (non-merkle) type, bytes MUST be obj’s canonical serialization: the id is BLAKE3(bytes), taken on trust with no re-encode. Passing a buffer that is not obj’s encoding silently mis-addresses it. Merkle types ignore bytes entirely (addressed from the struct).