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add CommitteeIndex type

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Danny Ryan 2019-10-16 18:53:36 +09:00
parent bd1c71b82e
commit 219084a08a
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2 changed files with 6 additions and 5 deletions
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5
specs/core/0_beacon-chain.md
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@ -137,6 +137,7 @@ We define the following Python custom types for type hinting and readability:
| - | - | - |
| `Slot` | `uint64` | a slot number |
| `Epoch` | `uint64` | an epoch number |
| `CommitteeIndex` | `uint64` | an index for a committee within a slot |
| `Shard` | `uint64` | a shard number |
| `ValidatorIndex` | `uint64` | a validator registry index |
| `Gwei` | `uint64` | an amount in Gwei |
@ -310,7 +311,7 @@ class AttestationData(Container):
source: Checkpoint
target: Checkpoint
# Committee Index
index: uint64
index: CommitteeIndex
```
#### `AttestationDataAndCustodyBit`
@ -874,7 +875,7 @@ def get_committees_per_slot(state: BeaconState, slot: Slot) -> uint64:
#### `get_crosslink_committee`
```python
def get_crosslink_committee(state: BeaconState, slot: Slot, index: uint64) -> Sequence[ValidatorIndex]:
def get_crosslink_committee(state: BeaconState, slot: Slot, index: CommitteeIndex) -> Sequence[ValidatorIndex]:
"""
Return the crosslink committee at ``slot`` for ``index``.
"""

6
specs/validator/0_beacon-chain-validator.md
View File

@ -135,7 +135,7 @@ A validator can get committee assignments for a given epoch using the following
def get_committee_assignment(state: BeaconState,
epoch: Epoch,
validator_index: ValidatorIndex
) -> Optional[Tuple[Sequence[ValidatorIndex], uint64, Slot]]:
) -> Optional[Tuple[Sequence[ValidatorIndex], CommitteeIndex, Slot]]:
"""
Return the committee assignment in the ``epoch`` for ``validator_index``.
``assignment`` returned is a tuple of the following form:
@ -150,9 +150,9 @@ def get_committee_assignment(state: BeaconState,
start_slot = compute_start_slot_of_epoch(epoch)
for slot in range(start_slot, start_slot + SLOTS_PER_EPOCH):
for index in range(get_committees_per_slot(state, Slot(slot))):
committee = get_crosslink_committee(state, Slot(slot), index)
committee = get_crosslink_committee(state, Slot(slot), CommitteeIndex(index))
if validator_index in committee:
return committee, index, Slot(slot)
return committee, CommitteeIndex(index), Slot(slot)
return None
```