ace-macros

Proc-macro crate. Provides #[derive(FrameCodec)] which generates FrameRead and FrameWrite impls for structs and enums.

#[derive(Clone, Debug, PartialEq, Eq, FrameCodec)]
#[frame(error = UdsError)]
pub struct DiagnosticSessionControlRequest {
    pub session_type: DiagnosticSessionType,
}

#[repr(u8)]
#[derive(Clone, Debug, PartialEq, Eq, FrameCodec)]
#[frame(error = UdsError)]
pub enum DiagnosticSessionType {
    #[frame(id = 0x01)]
    DefaultSession,
    #[frame(id = 0x02)]
    ProgrammingSession,
    #[frame(id_pat = "0x05..=0x3F")]
    ISOSAEReserved(u8),
}

Field attributes:

• #[frame(id = 0xNN)] — discriminant for unit and newtype enum variants
• #[frame(id_pat = "...")] — pattern for catchall variants carrying a raw u8
• #[frame(length = expr)] — fixed byte count for slice fields
• #[frame(read_all)] — consume all remaining bytes (trailing &[u8] fields)
• #[frame(skip)] — exclude from encode/decode, initialise with Default