PSP22 Mintable

This example shows how you can reuse the implementation of PSP22 token with PSP22Mintable extension.

How to use this extension

First, you should implement basic version of PSP22.

After you can just add implementation of PSP22Mintable via #[openbrush::implementation(PSP22Mintable)] attribute.

Final implementation

#![cfg_attr(not(feature = "std"), no_std, no_main)]

#[openbrush::implementation(PSP22, PSP22Mintable)]
#[openbrush::contract]
pub mod my_psp22_mintable {
    use openbrush::traits::Storage;

    #[ink(storage)]
    #[derive(Default, Storage)]
    pub struct Contract {
        #[storage_field]
        psp22: psp22::Data,
    }

    impl Contract {
        #[ink(constructor)]
        pub fn new(total_supply: Balance) -> Self {
            let mut instance = Self::default();

            psp22::Internal::_mint_to(&mut instance, Self::env().caller(), total_supply).expect("Should mint");

            instance
        }
    }
}

You can check an example of the usage of PSP22 Mintable.

And that's it! Your PSP22 is now extended by the PSP22Mintable extension and ready to use its functions!