Skip to main content

StableEnum

linera_sdk::formats

Derive Macro StableEnum 

Source 
#[derive(StableEnum)]
Expand description

Re-exports the #[derive(StableEnum)] macro for stable-tagged enums. Derive linera_sdk::formats::StableEnum for an enum. Expands to:

  • serde::Serialize / serde::Deserialize impls in which the variant tag is the first 4 bytes of Keccak-256(variant_name) (read big-endian as u32), with the top 5 bits masked to 00001 so the ULEB128 encoding is always exactly 4 bytes; and
  • a linera_sdk::formats::StableEnumTrace impl exposing the per-variant tags and a trace_all_variants method that drives serde_reflection::Tracer without caller-supplied samples.