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Add surround/dbl vote fns to SlashableAttestation

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Copied from `SlashableVoteData`
This commit is contained in:
Paul Hauner 2019-03-02 15:33:52 +11:00
parent c885e36a93
commit f3a3cfcc45
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GPG Key ID: D362883A9218FCC6
2 changed files with 23 additions and 2 deletions
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2
eth2/types/src/attester_slashing.rs
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@ -1,4 +1,4 @@
use crate::{test_utils::TestRandom, SlashableAttestation}; use crate::{test_utils::TestRandom, ChainSpec, SlashableAttestation};
use rand::RngCore; use rand::RngCore;
use serde_derive::Serialize; use serde_derive::Serialize;
use ssz_derive::{Decode, Encode, TreeHash}; use ssz_derive::{Decode, Encode, TreeHash};

23
eth2/types/src/slashable_attestation.rs
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@ -1,4 +1,4 @@
use crate::{test_utils::TestRandom, AggregateSignature, AttestationData, Bitfield}; use crate::{test_utils::TestRandom, AggregateSignature, AttestationData, Bitfield, ChainSpec};
use rand::RngCore; use rand::RngCore;
use serde_derive::Serialize; use serde_derive::Serialize;
use ssz_derive::{Decode, Encode, TreeHash}; use ssz_derive::{Decode, Encode, TreeHash};
@ -12,6 +12,27 @@ pub struct SlashableAttestation {
pub aggregate_signature: AggregateSignature, pub aggregate_signature: AggregateSignature,
} }
impl SlashableAttestation {
/// Check if ``attestation_data_1`` and ``attestation_data_2`` have the same target.
///
/// Spec v0.3.0
pub fn is_double_vote(&self, other: &SlashableAttestation, spec: &ChainSpec) -> bool {
self.data.slot.epoch(spec.epoch_length) == other.data.slot.epoch(spec.epoch_length)
}
/// Check if ``attestation_data_1`` surrounds ``attestation_data_2``.
///
/// Spec v0.3.0
pub fn is_surround_vote(&self, other: &SlashableAttestation, spec: &ChainSpec) -> bool {
let source_epoch_1 = self.data.justified_epoch;
let source_epoch_2 = other.data.justified_epoch;
let target_epoch_1 = self.data.slot.epoch(spec.epoch_length);
let target_epoch_2 = other.data.slot.epoch(spec.epoch_length);
(source_epoch_1 < source_epoch_2) && (target_epoch_2 < target_epoch_1)
}
}
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use super::*; use super::*;