Pallas Codec

The encoding foundation that the rest of the workspace builds on: minicbor for CBOR (re-exported) and a Rust port of the Plutus Core flat format. Most users won't depend on this crate directly — they'll get its types transitively through pallas-primitives, pallas-traverse, pallas-txbuilder, etc.

Usage

use pallas_codec::minicbor;

#[derive(minicbor::Encode, minicbor::Decode)]
struct Pair(#[n(0)] u64, #[n(1)] String);

let bytes = minicbor::to_vec(Pair(1, "hi".into()))?;
let back: Pair = minicbor::decode(&bytes)?;

Overview

• minicbor — re-exported as-is; this is the workspace's single source of truth for CBOR.
• flat — Rust port of the Haskell flat reference implementation, used for Plutus Core scripts.
• utils — round-trip-friendly helper types (KeepRaw, KeyValuePairs, MaybeIndefArray, NonEmptySet, Nullable, PositiveCoin, …) reused by the higher-level era types.
• Fragment trait — blanket-implemented for any type that is both minicbor::Encode and minicbor::Decode; used as a bound where the workspace wants "any CBOR-roundtrippable type".
• codec_by_datatype! macro — derives a tag-free CBOR codec for enums whose variants are distinguished by their data-type rather than a discriminant.