Trait BuiltinFunction

pub trait BuiltinFunction {
    // Required methods
    fn name(&self) -> &str;
    fn execute<F>(
        &self,
        tx_input: TxInput,
        tx_cache: TxCache,
        vm: &BlockchainVMRef,
        lambda: F,
    ) -> (TxResult, BlockchainUpdate)
       where F: FnOnce();

    // Provided method
    fn extract_esdt_transfers(
        &self,
        tx_input: &TxInput,
    ) -> BuiltinFunctionEsdtTransferInfo { ... }
}

Required Methods

fn name(&self) -> &str

Function name corresponding the builtin function implementation.

Currently not used.

fn execute<F>( &self, tx_input: TxInput, tx_cache: TxCache, vm: &BlockchainVMRef, lambda: F, ) -> (TxResult, BlockchainUpdate)

where F: FnOnce(),

Executes builtin function for the givn TxInput and with access to the underlying contracts states via the TxCache.

A few builtin functions (the ones transferring ESDT) can also call the VM after they finish, so they are given the extra reference to the VM and a lambda closure to execute on the VM

Provided Methods

fn extract_esdt_transfers( &self, tx_input: &TxInput, ) -> BuiltinFunctionEsdtTransferInfo

Extracts data relating ESDT transfers handled by the builtin function, if applicable.

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