Derive Macro TransactionEnvelope

#[derive(TransactionEnvelope)]
{
    // Attributes available to this derive:
    #[envelope]
    #[serde]
}

Derive macro for creating transaction envelope types.

This macro generates a transaction envelope implementation that supports multiple transaction types following the EIP-2718 standard.

Container Attributes

• #[envelope(tx_type_name = MyTxType)] - Custom name for the generated transaction type enum
• #[envelope(alloy_consensus = path::to::alloy)] - Custom path to alloy_consensus crate
• #[envelope(typed = MyTypedTransaction)] - Generate a corresponding TypedTransaction enum (optional)

Variant Attributes

• Each variant must be annotated with envelope attribute with one of the following options:
  • #[envelope(ty = N)] - Specify the transaction type ID (0-255)
  • #[envelope(ty = N, typed = CustomType)] - Use a custom transaction type for this variant in the generated TypedTransaction (optional)
  • #[envelope(flatten)] - Flatten this variant to delegate to inner envelope type

Generated Code

The macro generates:

• A MyTxType enum with transaction type variants
• Implementations of Transaction, Typed2718, Encodable2718, Decodable2718
• Serde serialization/deserialization support (if serde feature is enabled)
• Arbitrary implementations (if arbitrary feature is enabled)
• Optionally, a TypedTransaction enum (if typed attribute is specified)