MaxSize

A Rust library that provides a MaxSize trait, which gives the maximum size the borsh serialization of a struct or enum could be in bytes. Implementations for simple types and a derive macro are included to make it easy to use with your custom types.

Features

• MaxSize trait: Get the maximum borsh serialized size of a type in bytes.
• Implementations for simple types: Integers, floats, etc.
• Derive macro: Automatically implement MaxSize for your structs and enums.

Usage

1. Add the dependency to your Cargo.toml:

[dependencies]
borsh-max-size = "0.1"

borsh-max-size contains optional arrayvec and solana-program features that add support for those libraries.

2. Use the MaxSize trait in your code:

use borsh_max_size::MaxSize;

let max_size = i32::max_size(); // for simple types
assert_eq!(max_size, 4);

3. Derive MaxSize for your own types

use borsh_max_size::MaxSize;

#[derive(MaxSize)]
struct MyStruct {
    a: i32,
    b: u64,
    c: [u8; 4]
}

println!("Max size of MyStruct: {}", MyStruct::max_size());

License

This project is licensed under the MIT License. See the LICENSE.md file for details.