Struct FastDbc 

pub struct FastDbc { /* private fields */ }

High-performance DBC wrapper with O(1) message lookup.

Wraps a Dbc and adds a HashMap index for fast message lookup by CAN ID. Use this when you need to decode many frames at high speed.

Cloning is O(1) due to internal Arc usage.

Implementations

impl FastDbc

pub fn new(dbc: Dbc) -> Self

Create a new FastDbc wrapper from a Dbc.

This builds a HashMap index for O(1) message lookup.

pub fn get(&self, id: u32) -> Option<&Message>

Get a message by standard (11-bit) CAN ID.

Returns None if no message with this ID exists.

Performance

O(1) average case.

pub fn get_extended(&self, id: u32) -> Option<&Message>

Get a message by extended (29-bit) CAN ID.

Use this for extended CAN IDs.

pub fn get_any(&self, id: u32) -> Option<&Message>

Get a message by CAN ID, trying with extended flag if standard not found.

Single lookup optimization: checks if id exists, then tries with extended flag.

pub fn decode_into( &self, id: u32, data: &[u8], out: &mut [f64], ) -> Option<usize>

Decode a message by standard CAN ID into the output buffer.

This is the primary high-speed decode path:

• O(1) message lookup
• Zero allocation
• Direct buffer write

Arguments

• id - Standard (11-bit) CAN ID
• data - Raw CAN payload bytes
• out - Output buffer for physical values

Returns

Number of signals decoded, or None if message not found or payload too short.

pub fn decode_extended_into( &self, id: u32, data: &[u8], out: &mut [f64], ) -> Option<usize>

Decode a message by extended CAN ID into the output buffer.

pub fn decode_raw_into( &self, id: u32, data: &[u8], out: &mut [i64], ) -> Option<usize>

Decode raw values by standard CAN ID.

pub fn max_signals(&self) -> usize

Get the maximum number of signals in any single message.

Use this to pre-allocate decode buffers.

pub fn total_signals(&self) -> usize

Get the total number of signals across all messages.

pub fn message_count(&self) -> usize

Get the number of messages.

pub fn contains(&self, id: u32) -> bool

Check if a message with this standard CAN ID exists.

pub fn contains_extended(&self, id: u32) -> bool

Check if a message with this extended CAN ID exists.

pub fn dbc(&self) -> &Dbc

Get the underlying Dbc.

pub fn into_dbc(self) -> Dbc

Consume and return the underlying Dbc.

Returns the Dbc if this is the only reference, otherwise clones it.

pub fn ids(&self) -> impl Iterator<Item = u32> + '_

Iterator over all CAN IDs (with extended flag where applicable).

Trait Implementations

impl Clone for FastDbc

fn clone(&self) -> FastDbc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FastDbc

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

Formats the value using the given formatter.

impl From<Dbc> for FastDbc

fn from(dbc: Dbc) -> Self

Converts to this type from the input type.