b4689e20c6
## Proposed Changes Implement the consensus changes necessary for the upcoming Altair hard fork. ## Additional Info This is quite a heavy refactor, with pivotal types like the `BeaconState` and `BeaconBlock` changing from structs to enums. This ripples through the whole codebase with field accesses changing to methods, e.g. `state.slot` => `state.slot()`. Co-authored-by: realbigsean <seananderson33@gmail.com>
41 lines
1.2 KiB
Rust
41 lines
1.2 KiB
Rust
mod deposit_data_tree;
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mod get_attestation_participation;
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mod get_attesting_indices;
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mod get_indexed_attestation;
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mod initiate_validator_exit;
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mod slash_validator;
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pub mod altair;
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pub mod base;
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pub use deposit_data_tree::DepositDataTree;
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pub use get_attestation_participation::get_attestation_participation_flag_indices;
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pub use get_attesting_indices::get_attesting_indices;
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pub use get_indexed_attestation::get_indexed_attestation;
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pub use initiate_validator_exit::initiate_validator_exit;
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pub use slash_validator::slash_validator;
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use safe_arith::SafeArith;
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use types::{BeaconState, BeaconStateError, EthSpec};
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/// Increase the balance of a validator, erroring upon overflow, as per the spec.
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pub fn increase_balance<E: EthSpec>(
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state: &mut BeaconState<E>,
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index: usize,
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delta: u64,
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) -> Result<(), BeaconStateError> {
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state.get_balance_mut(index)?.safe_add_assign(delta)?;
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Ok(())
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}
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/// Decrease the balance of a validator, saturating upon overflow, as per the spec.
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pub fn decrease_balance<E: EthSpec>(
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state: &mut BeaconState<E>,
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index: usize,
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delta: u64,
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) -> Result<(), BeaconStateError> {
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let balance = state.get_balance_mut(index)?;
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*balance = balance.saturating_sub(delta);
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Ok(())
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}
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