Trait casper_types::system::mint::StorageProvider

pub trait StorageProvider {
    fn new_uref<T: CLTyped + ToBytes>(&mut self, init: T) -> Result<URef, Error>;
    fn read<T: CLTyped + FromBytes>(
        &mut self, 
        uref: URef
    ) -> Result<Option<T>, Error>;
    fn write<T: CLTyped + ToBytes>(
        &mut self, 
        uref: URef, 
        value: T
    ) -> Result<(), Error>;
    fn add<T: CLTyped + ToBytes>(
        &mut self, 
        uref: URef, 
        value: T
    ) -> Result<(), Error>;
    fn read_balance(&mut self, uref: URef) -> Result<Option<U512>, Error>;
    fn write_balance(&mut self, uref: URef, balance: U512) -> Result<(), Error>;
    fn add_balance(&mut self, uref: URef, value: U512) -> Result<(), Error>;
}

Provides functionality of a contract storage.

Required methods

fn new_uref<T: CLTyped + ToBytes>(&mut self, init: T) -> Result<URef, Error>

Create new URef.

fn read<T: CLTyped + FromBytes>(
    &mut self,
    uref: URef
) -> Result<Option<T>, Error>

Read data from URef.

fn write<T: CLTyped + ToBytes>(
    &mut self,
    uref: URef,
    value: T
) -> Result<(), Error>

Write data under a URef.

fn add<T: CLTyped + ToBytes>(
    &mut self,
    uref: URef,
    value: T
) -> Result<(), Error>

Add data to a URef.

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

Read balance.

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

Write balance.

fn add_balance(&mut self, uref: URef, value: U512) -> Result<(), Error>

Add amount to an existing balance.

Implementors