Struct ware::im::Ware

pub struct Ware<T> {
    pub fns: Vec<Box<dyn Fn(T) -> T>>,
}

A middleware chain.

Fields

fns: Vec<Box<dyn Fn(T) -> 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::im::Ware;
let mut chain: Ware<String> = Ware::new();

pub fn wrap(&mut self, func: Box<dyn Fn(T) -> T>)

Add a new middleware function to the internal function list. This function must be of the Fn trait, take the specified type and return the same specified type. It also has to be boxed for memory safety reasons.

Example

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

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

Run the registered middleware functions with the given value to pass through. Returns whatever the last registered middleware function returns.