Struct AnnotationBlock 

pub struct AnnotationBlock {
    pub target_block_id: u32,
    pub kind: AnnotationKind,
    pub value: Vec<u8>,
}

ANNOTATION block — metadata overlay for other blocks.

Annotations are secondary blocks that attach metadata to a primary block identified by target_block_id (the zero-based index of the target block in the stream). The kind field determines how the value payload should be interpreted:

• Priority: value is a Priority byte
• Summary: value is UTF-8 text summarizing the target block
• Tag: value is a UTF-8 label/tag string

Field layout within body:

┌──────────┬───────────┬─────────────────┬──────────────────────┐
│ Field ID │ Wire Type │ Name            │ Description          │
├──────────┼───────────┼─────────────────┼──────────────────────┤
│ 1        │ Varint    │ target_block_id │ Index of target blk  │
│ 2        │ Varint    │ kind            │ AnnotationKind byte  │
│ 3        │ Bytes     │ value           │ Annotation payload   │
└──────────┴───────────┴─────────────────┴──────────────────────┘

Fields

target_block_id: u32

kind: AnnotationKind

value: Vec<u8>

Implementations

impl AnnotationBlock

pub fn encode_body(&self) -> Vec<u8>

Serialize this block’s fields into a TLV-encoded body.

pub fn decode_body(buf: &[u8]) -> Result<Self, TypeError>

Deserialize an ANNOTATION block from a TLV-encoded body.

Trait Implementations

impl Clone for AnnotationBlock

fn clone(&self) -> AnnotationBlock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AnnotationBlock

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

Formats the value using the given formatter.

impl PartialEq for AnnotationBlock

fn eq(&self, other: &AnnotationBlock) -> 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 Eq for AnnotationBlock

impl StructuralPartialEq for AnnotationBlock