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Pass state to precompiles #34

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Merged
sorpaas merged 4 commits into from
Jun 10, 2021
Merged

Pass state to precompiles #34

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3bc2f3a
Precompile support state
mfornet May 21, 2021
47e23f5
Pass is_static to precompiles
mfornet May 30, 2021
b2aea1a
Nit
mfornet May 30, 2021
866657d
Use tab instead of space
mfornet Jun 10, 2021
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18 changes: 14 additions & 4 deletions src/executor/stack/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -87,18 +87,28 @@ pub struct PrecompileOutput {
pub logs: Vec<Log>,
}

/// Precompiles function signature. Expected input arguments are:
/// * Address
/// * Input
/// * Context
/// * State
/// * Is static
type PrecompileFn<S> = fn(H160, &[u8], Option<u64>, &Context, &mut S, bool) -> Option<Result<PrecompileOutput, ExitError>>;

/// Stack-based executor.
pub struct StackExecutor<'config, S> {
config: &'config Config,
precompile: fn(H160, &[u8], Option<u64>, &Context) -> Option<Result<PrecompileOutput, ExitError>>,
precompile: PrecompileFn<S>,
state: S,
}

fn no_precompile(
fn no_precompile<S>(
_address: H160,
_input: &[u8],
_target_gas: Option<u64>,
_context: &Context,
_state: &mut S,
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_is_static: bool,
) -> Option<Result<PrecompileOutput, ExitError>> {
None
}
Expand All @@ -123,7 +133,7 @@ impl<'config, S: StackState<'config>> StackExecutor<'config, S> {
pub fn new_with_precompile(
state: S,
config: &'config Config,
precompile: fn(H160, &[u8], Option<u64>, &Context) -> Option<Result<PrecompileOutput, ExitError>>,
precompile: PrecompileFn<S>,
) -> Self {
Self {
config,
Expand Down Expand Up @@ -531,7 +541,7 @@ impl<'config, S: StackState<'config>> StackExecutor<'config, S> {
}
}

if let Some(ret) = (self.precompile)(code_address, &input, Some(gas_limit), &context) {
if let Some(ret) = (self.precompile)(code_address, &input, Some(gas_limit), &context, &mut self.state, is_static) {
match ret {
Ok(PrecompileOutput { exit_status , output, cost, logs }) => {
for Log { address, topics, data} in logs {
Expand Down