Struct pallet_evm_precompileset_assets_erc20::Erc20AssetsPrecompileSet

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pub struct Erc20AssetsPrecompileSet<Runtime, Instance: 'static = ()>(/* private fields */);
Expand description

The following distribution has been decided for the precompiles 0-1023: Ethereum Mainnet Precompiles 1024-2047 Precompiles that are not in Ethereum Mainnet but are neither Moonbeam specific 2048-4095 Moonbeam specific precompiles Asset precompiles can only fall between 0xFFFFFFFF00000000000000000000000000000000 - 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF The precompile for AssetId X, where X is a u128 (i.e.16 bytes), if 0XFFFFFFFF + Bytes(AssetId) In order to route the address to Erc20AssetsPrecompile, we first check whether the AssetId exists in pallet-assets We cannot do this right now, so instead we check whether the total supply is zero. If so, we do not route to the precompiles This means that every address that starts with 0xFFFFFFFF will go through an additional db read, but the probability for this to happen is 2^-32 for random addresses

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impl<Runtime, Instance> Erc20AssetsPrecompileSet<Runtime, Instance>

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pub fn new() -> Self

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impl<R, V> Clone for Erc20AssetsPrecompileSet<R, V>

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<R, V> Default for Erc20AssetsPrecompileSet<R, V>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<Runtime, Instance> PrecompileSet for Erc20AssetsPrecompileSet<Runtime, Instance>
where Instance: InstanceToPrefix + 'static, Runtime: Config<Instance> + Config + Config + AccountIdAssetIdConversion<Runtime::AccountId, AssetIdOf<Runtime, Instance>>, Runtime::RuntimeCall: Dispatchable<PostInfo = PostDispatchInfo> + GetDispatchInfo + From<Call<Runtime, Instance>>, <Runtime::RuntimeCall as Dispatchable>::RuntimeOrigin: From<Option<Runtime::AccountId>>, BalanceOf<Runtime, Instance>: TryFrom<U256> + Into<U256> + Codec, <<Runtime as Config>::RuntimeCall as Dispatchable>::RuntimeOrigin: OriginTrait, AssetIdOf<Runtime, Instance>: Display, Runtime::AccountId: Into<H160>,

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fn execute( &self, handle: &mut impl PrecompileHandle ) -> Option<EvmResult<PrecompileOutput>>

Tries to execute a precompile in the precompile set. If the provided address is not a precompile, returns None.
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fn is_precompile(&self, address: H160, gas: u64) -> IsPrecompileResult

Check if the given address is a precompile. Should only be called to perform the check while not executing the precompile afterward, since execute already performs a check internally.

Auto Trait Implementations§

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impl<Runtime, Instance> RefUnwindSafe for Erc20AssetsPrecompileSet<Runtime, Instance>
where Instance: RefUnwindSafe, Runtime: RefUnwindSafe,

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impl<Runtime, Instance> Send for Erc20AssetsPrecompileSet<Runtime, Instance>
where Instance: Send, Runtime: Send,

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impl<Runtime, Instance> Sync for Erc20AssetsPrecompileSet<Runtime, Instance>
where Instance: Sync, Runtime: Sync,

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impl<Runtime, Instance> Unpin for Erc20AssetsPrecompileSet<Runtime, Instance>
where Instance: Unpin, Runtime: Unpin,

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impl<Runtime, Instance> UnwindSafe for Erc20AssetsPrecompileSet<Runtime, Instance>
where Instance: UnwindSafe, Runtime: UnwindSafe,

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fn prepare_test( &self, from: impl Into<H160>, to: impl Into<H160>, data: impl Into<Vec<u8>> ) -> PrecompilesTester<'_, T>

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