Crate statemachine_macro

Provides the statemachine!() macro.

Examples

use statemachine_macro::*;

statemachine! {
    pub struct Foo {
        allow_x: bool
    }

    enum FooState consumes [char, i32] from Start accepts [Done];

    Start => {
        @enter => {
            println!("Entering Start!");
        },
        @leave => {
            println!("Leaving Start!");
        },
        @loop => {
            println!("Looping inside Start!");
        },
        char match 'a' => {
            println!("Got 'a'... Going to 'Done'!");
            Done
        },
        char match 'b' => {
            println!("Got 'b'... allowing 'x'!");
            self.allow_x = true;
            Start
        },
        char match 'x' => if self.allow_x {
            println!("Got authorized 'x'.");
            Done
        },
        char match 'x' => if !self.allow_x {
            println!("Got unauthorized 'x'.");
            Error
        },
        i32 match 42 => {
            println!("It is the answer!");
            Error
        },
        i32 match val => {
            println!("Got {}", val);
            Error
        },
        _ => Error
    },

    Error => {
        _ => Error
    },

    Done => {
        _ => Error
    }
}

Macros

statemachine