Trait frame_support::traits::tokens::fungibles::SwapNative

pub trait SwapNative<Origin, AccountId, Balance, AssetBalance, AssetId> {
    // Required methods
    fn swap_tokens_for_exact_native(
        sender: AccountId,
        asset_id: AssetId,
        amount_out: Balance,
        amount_in_max: Option<AssetBalance>,
        send_to: AccountId,
        keep_alive: bool,
    ) -> Result<AssetBalance, DispatchError>;
    fn swap_exact_native_for_tokens(
        sender: AccountId,
        asset_id: AssetId,
        amount_in: Balance,
        amount_out_min: Option<AssetBalance>,
        send_to: AccountId,
        keep_alive: bool,
    ) -> Result<AssetBalance, DispatchError>;
}

Trait for providing methods to swap between the chain’s native token and other asset classes.

Required Methods

fn swap_tokens_for_exact_native( sender: AccountId, asset_id: AssetId, amount_out: Balance, amount_in_max: Option<AssetBalance>, send_to: AccountId, keep_alive: bool, ) -> Result<AssetBalance, DispatchError>

Take an asset_id and swap some amount for amount_out of the chain’s native asset. If an amount_in_max is specified, it will return an error if acquiring amount_out would be too costly.

Withdraws asset_id from sender, deposits native asset to send_to, respecting keep_alive.

If successful returns the amount of the asset_id taken to provide amount_out.

fn swap_exact_native_for_tokens( sender: AccountId, asset_id: AssetId, amount_in: Balance, amount_out_min: Option<AssetBalance>, send_to: AccountId, keep_alive: bool, ) -> Result<AssetBalance, DispatchError>

Take an asset_id and swap amount_in of the chain’s native asset for it. If an amount_out_min is specified, it will return an error if it is unable to acquire the amount desired.

Withdraws native asset from sender, deposits asset_id to send_to, respecting keep_alive.

If successful, returns the amount of asset_id acquired for the amount_in.

Object Safety

This trait is not object safe.

Implementors