Struct ParseResult 

pub struct ParseResult<'data> {
    pub fields: SmallVec<[FieldEntry<'data>; 16]>,
    pub remaining: &'data [u8],
    pub child_hints: SmallVec<[HintEntry; 4]>,
    pub error: Option<String>,
    pub encap_depth: u8,
    pub tunnel_type: TunnelType,
    pub tunnel_id: Option<u64>,
}

Result of parsing a protocol layer.

Uses SmallVec for inline storage to avoid HashMap allocation overhead. Most protocols have <16 fields and <4 child hints, so these fit inline.

The lifetime parameter 'data ties the result to the packet/buffer data, allowing zero-copy parsing where field values reference the packet directly.

Fields

fields: SmallVec<[FieldEntry<'data>; 16]>

Extracted field values. Most protocols have <16 fields. Field values may reference the packet data (zero-copy).

remaining: &'data [u8]

Remaining unparsed bytes (payload for next layer).

child_hints: SmallVec<[HintEntry; 4]>

Hints for child protocol identification. Typically 2-4 entries.

error: Option<String>

Parse error if partial parsing occurred.

encap_depth: u8

Encapsulation depth when this protocol was parsed (0 = outer layer).

tunnel_type: TunnelType

Type of the innermost enclosing tunnel (if inside a tunnel).

tunnel_id: Option<u64>

Identifier of the innermost enclosing tunnel (VNI, GRE key, TEID, etc.).

Implementations

impl<'data> ParseResult<'data>

pub fn success( fields: SmallVec<[FieldEntry<'data>; 16]>, remaining: &'data [u8], child_hints: SmallVec<[HintEntry; 4]>, ) -> Self

Create a successful parse result.

Note: encap_depth, tunnel_type, and tunnel_id default to 0/None. These are populated by the parse loop from the ParseContext after parsing.

pub fn error(error: String, remaining: &'data [u8]) -> Self

Create an error parse result.

pub fn partial( fields: SmallVec<[FieldEntry<'data>; 16]>, remaining: &'data [u8], error: String, ) -> Self

Create a result with partial fields and an error.

pub fn set_encap_context(&mut self, ctx: &ParseContext)

Set encapsulation context from a ParseContext.

pub fn get(&self, name: &str) -> Option<&FieldValue<'data>>

Get a field value by name (linear search, but N is small).

pub fn hint(&self, name: &str) -> Option<u64>

Get a child hint value by name.

pub fn is_ok(&self) -> bool

Check if parsing was successful.

Trait Implementations

impl<'data> Clone for ParseResult<'data>

fn clone(&self) -> ParseResult<'data>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'data> Debug for ParseResult<'data>

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

Formats the value using the given formatter.