ruststep-derive 0.1.0

proc-macro for ruststep
Documentation

Procedural macros for ruststep

use ruststep_derive::{as_holder, Holder};
use std::collections::HashMap;

pub struct Table {
a: HashMap<u64, as_holder!(A)>,
b: HashMap<u64, as_holder!(B)>,
}

#[derive(Debug, Clone, PartialEq, Holder)]
#[holder(table = Table)]
#[holder(field = a)]
pub struct A {
pub x: f64,
pub y: f64,
}

#[derive(Debug, Clone, PartialEq, Holder)]
#[holder(table = Table)]
#[holder(field = b)]
pub struct B {
pub z: f64,
#[holder(use_place_holder)]
pub a: A,
}

#[derive(Holder)] generates followings:

  • AHolder struct

  • naming rule is {}Holder

  • This name is obtained by as_holder!(A)

  • impl Holder for AHolder

  • impl Deserialize for AHolder

  • AHolderVisitor struct for implementing serde::Deserialize trait

  • naming rule is {}HolderVisitor

  • This name is obtained by as_holder_visitor!(A)

  • This struct is usually generated by serde_derive::Deserialize proc-macro, but their definition does not match for our cases.