Macro cfx_executor::make_solidity_contract

macro_rules! make_solidity_contract {
    ( $(#[$attr:meta])* $visibility:vis struct $name:ident ($addr:expr, "placeholder"); ) => { ... };
    ( $(#[$attr:meta])* $visibility:vis struct $name:ident ($addr:expr, $gen_table:expr, "active_at_genesis"); ) => { ... };
    ( $(#[$attr:meta])* $visibility:vis struct $name:ident ($addr:expr, $gen_table:expr, initialize: $init:expr, is_active: $is_active:expr); ) => { ... };
}

A marco to implement an internal contract.