ligo/gitlab-pages/docs/intro/src/what-and-why/ligo-counter.religo
2020-02-10 19:07:20 +01:00

27 lines
644 B
Plaintext

type storage = int;
type parameter =
Increment (int)
| Decrement (int)
| Reset;
type return = (list (operation), storage);
(* Two entrypoints *)
let add = ((store, delta) : (storage, int)) : storage => store + delta;
let sub = ((store, delta) : (storage, int)) : storage => store - delta;
(* Main access point that dispatches to the entrypoints according to
the smart contract parameter. *)
let main = ((action, store) : (parameter, storage)) : return => {
(([] : list (operation)), // No operations
(switch (action) {
| Increment (n) => add ((store, n))
| Decrement (n) => sub ((store, n))
| Reset => 0
}))
};