Crate encoding_derive_helpers

Helper functions for creating encoding derive crates, like strict_encoding_derive or lightning_encoding_derive.

To create a derive crate, just use the following sample:

extern crate proc_macro;
#[macro_use]
extern crate amplify;

use encoding_derive_helpers::{decode_derive, encode_derive, TlvEncoding};
use proc_macro::TokenStream;
use syn::DeriveInput;

#[proc_macro_derive(StrictEncode, attributes(strict_encoding))]
pub fn derive_strict_encode(input: TokenStream) -> TokenStream {
    let derive_input = parse_macro_input!(input as DeriveInput);
    encode_derive(
        "strict_encoding",
        ident!(strict_encoding),
        ident!(StrictEncode),
        ident!(strict_encode),
        ident!(strict_serialize),
        derive_input,
        TlvEncoding::Denied,
    )
    .unwrap_or_else(|e| e.to_compile_error())
    .into()
}

Functions

decode_derive

Performs actual derivation of the decode trait using the provided information about trait parameters and requirements for TLV support.

encode_derive

Performs actual derivation of the encode trait using the provided information about trait parameters and requirements for TLV support.