Trait Mint

pub trait Mint:
    RuntimeProvider
    + StorageProvider
    + SystemProvider {
    // Required method
    fn purse_exists(&mut self, uref: URef) -> Result<bool, Error>;

    // Provided methods
    fn mint(&mut self, initial_balance: U512) -> Result<URef, Error> { ... }
    fn burn(&mut self, purse: URef, amount: U512) -> Result<(), Error> { ... }
    fn reduce_total_supply(&mut self, amount: U512) -> Result<(), Error> { ... }
    fn balance(&mut self, purse: URef) -> Result<Option<U512>, Error> { ... }
    fn transfer(
        &mut self,
        maybe_to: Option<AccountHash>,
        source: URef,
        target: URef,
        amount: U512,
        id: Option<u64>,
    ) -> Result<(), Error> { ... }
    fn read_base_round_reward(&mut self) -> Result<U512, Error> { ... }
    fn mint_into_existing_purse(
        &mut self,
        existing_purse: URef,
        amount: U512,
    ) -> Result<(), Error> { ... }
}

Mint trait.

Required Methods

fn purse_exists(&mut self, uref: URef) -> Result<bool, Error>

Check if a purse exists.

Provided Methods

fn mint(&mut self, initial_balance: U512) -> Result<URef, Error>

Mint new token with given initial_balance balance. Returns new purse on success, otherwise an error.

fn burn(&mut self, purse: URef, amount: U512) -> Result<(), Error>

Burns native tokens.

fn reduce_total_supply(&mut self, amount: U512) -> Result<(), Error>

Reduce total supply by amount. Returns unit on success, otherwise an error.

fn balance(&mut self, purse: URef) -> Result<Option<U512>, Error>

Read balance of given purse.

fn transfer( &mut self, maybe_to: Option<AccountHash>, source: URef, target: URef, amount: U512, id: Option<u64>, ) -> Result<(), Error>

Transfers amount of tokens from source purse to a target purse.

fn read_base_round_reward(&mut self) -> Result<U512, Error>

Retrieves the base round reward.

fn mint_into_existing_purse( &mut self, existing_purse: URef, amount: U512, ) -> Result<(), Error>

Mint amount new token into existing_purse. Returns unit on success, otherwise an error.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<S> Mint for RuntimeNative<S>

where S: StateReader<Key, StoredValue, Error = Error>,