Struct ware::Ware

pub struct Ware<T> {
    pub fns: Vec<Box<dyn Fn(WareArg<'_, T>)>>,
}

A middleware chain.

Fields

fns: Vec<Box<dyn Fn(WareArg<'_, T>)>>

The internal list of middleware functions.

Implementations

impl<T> Ware<T>

pub fn new() -> Ware<T>

Create a new middleware chain with a given type.

Example

use ware::Ware;
let mut chain: Ware<String> = Ware::new();

pub fn wrap(&mut self, func: Box<dyn Fn(WareArg<'_, T>)>)

Add a new middleware function to the internal function list. This function must be of the Fn trait, take a WareArg<T> and return a unit struct (aka. nothing). It also has to be boxed for memory safety reasons.

Example

use ware::Ware;
let mut chain: Ware<String> = Ware::new();
chain.wrap(Box::new(|mut st| {
    st.push('a');
}))

pub fn run(&self, arg: T) -> T

Run the registered middleware functions with the given value to pass through. Returns whatever the passed value will be after the last middleware function runs.