PSP34 Burnable

This example shows how you can reuse the implementation of PSP34 token with PSP34Burnable extension.

How to use this extension

First, you should implement basic version of PSP34.

After you can just add implementation of PSP34Burnable via #[openbrush::implementation(PSP34Burnable)] attribute.

Final code

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

#[openbrush::implementation(PSP34, PSP34Burnable)]
#[openbrush::contract]
pub mod my_psp34_burnable {
    use openbrush::traits::Storage;

    #[derive(Default, Storage)]
    #[ink(storage)]
    pub struct Contract {
        #[storage_field]
        psp34: psp34::Data,
    }

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

            psp34::Internal::_mint_to(&mut instance, Self::env().caller(), Id::U8(0u8))
                .expect("Should mint token with id 0");
            psp34::Internal::_mint_to(&mut instance, Self::env().caller(), Id::U8(1u8))
                .expect("Should mint token with id 1");
            psp34::Internal::_mint_to(&mut instance, Self::env().caller(), Id::U8(2u8))
                .expect("Should mint token with id 2");

            instance
        }
    }
}

And that's it! Your PSP34 is now extended by the PSP34Burnable extension and ready to use its functions! You can check an example of the usage of PSP34 Burnable.