Macro macros::try_cbor

try_cbor!() { /* proc-macro */ }

Transform a block of CBOR encoding calls by adding error checking. All lines must terminate with ;

try_cbor!({
    let encoder = COAP_CONTEXT.encoder("COAP_CONTEXT", "_map");
    cbor_encode_text_string(
        encoder,
        COAP_CONTEXT.key_to_cstr(key_with_opt_null),
        COAP_CONTEXT.cstr_len(key_with_opt_null));
    cbor_encode_int(encoder, value);
})

expands to:

unsafe {
    let encoder = COAP_CONTEXT.encoder("COAP_CONTEXT", "_map");
    let res =
        tinycbor::cbor_encode_text_string(encoder,
          COAP_CONTEXT.key_to_cstr(key_with_opt_null),
          COAP_CONTEXT.cstr_len(key_with_opt_null));
    COAP_CONTEXT.check_result(res);
    let res = tinycbor::cbor_encode_int(encoder, value);
    COAP_CONTEXT.check_result(res);
}