precompile_utils::evm::handle

Trait PrecompileHandleExt

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pub trait PrecompileHandleExt: PrecompileHandle {
    // Required methods
    fn record_db_read<Runtime: Config>(
        &mut self,
        data_max_encoded_len: usize,
    ) -> Result<(), ExitError>;
    fn record_log_costs_manual(
        &mut self,
        topics: usize,
        data_len: usize,
    ) -> EvmResult;
    fn record_log_costs(&mut self, logs: &[&Log]) -> EvmResult;
    fn check_function_modifier(&self, modifier: FunctionModifier) -> MayRevert;
    fn read_u32_selector(&self) -> MayRevert<u32>;
    fn read_after_selector(&self) -> MayRevert<Reader<'_>>;
}

Required Methods§

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fn record_db_read<Runtime: Config>( &mut self, data_max_encoded_len: usize, ) -> Result<(), ExitError>

Record cost of one DB read manually. The max encoded length of the data that will be read should be provided.

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fn record_log_costs_manual( &mut self, topics: usize, data_len: usize, ) -> EvmResult

Record cost of a log manually. This can be useful to record log costs early when their content have static size.

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fn record_log_costs(&mut self, logs: &[&Log]) -> EvmResult

Record cost of logs.

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fn check_function_modifier(&self, modifier: FunctionModifier) -> MayRevert

Check that a function call is compatible with the context it is called into.

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fn read_u32_selector(&self) -> MayRevert<u32>

Read the selector from the input data.

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fn read_after_selector(&self) -> MayRevert<Reader<'_>>

Returns a reader of the input, skipping the selector.

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§