dogamak / dynaccess

Uses custom_derive to provide automatically generated dynamic accessors for structs

dynaccess

This crate provides #[derive(Dynaccess)] that implements dynamic accessor methods for the struct using FieldAccessors trait in dynaccess_traits. A module containing unit structs of which each represent one field in the struct. These structs are passed to the methods of FieldAccessors to get and modify the corresponding fields of the struct.

Example

#[feature(proc_macro)]
#[macro_use]
extern create dynaccess_macros;
extern crate dynaccess_traits;

#[derive(Dynaccess)]
pub struct Person {
    pub age: u32,
    pub names: Vec<String>,
}

fn main() {
    let someone = Person {
        age: 19,
        names: vec!["John".to_string()],
    };

    assert_eq!(someone.get(field::Age), 19);
    someone.set(field::Age, 20);
    assert_eq!(someone.get(field::Age), 20);

    someone.get_mut(field::Names).push("Smith");
    assert_eq!(someone.get(field::Names).join(" "), "John Smith");
}