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use std::collections::BTreeMap;
use util::Address;
use builtin::Builtin;
use engines::Engine;
use spec::CommonParams;
use evm::Schedule;
use env_info::EnvInfo;
pub struct NullEngine {
params: CommonParams,
builtins: BTreeMap<Address, Builtin>,
}
impl NullEngine {
pub fn new(params: CommonParams, builtins: BTreeMap<Address, Builtin>) -> Self {
NullEngine{
params: params,
builtins: builtins,
}
}
}
impl Default for NullEngine {
fn default() -> Self {
Self::new(Default::default(), Default::default())
}
}
impl Engine for NullEngine {
fn name(&self) -> &str {
"NullEngine"
}
fn params(&self) -> &CommonParams {
&self.params
}
fn builtins(&self) -> &BTreeMap<Address, Builtin> {
&self.builtins
}
fn schedule(&self, _env_info: &EnvInfo) -> Schedule {
Schedule::new_homestead()
}
}