80 lines
1.9 KiB
Rust
80 lines
1.9 KiB
Rust
//! This account contains the clock slot, epoch, and stakers_epoch
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//!
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use crate::account::Account;
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use crate::sysvar;
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use bincode::serialized_size;
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pub use crate::timing::{Epoch, Slot};
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const ID: [u8; 32] = [
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6, 167, 213, 23, 24, 199, 116, 201, 40, 86, 99, 152, 105, 29, 94, 182, 139, 94, 184, 163, 155,
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75, 109, 92, 115, 85, 91, 33, 0, 0, 0, 0,
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];
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crate::solana_name_id!(ID, "SysvarC1ock11111111111111111111111111111111");
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#[repr(C)]
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#[derive(Serialize, Deserialize, Debug, Default, PartialEq)]
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pub struct Clock {
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pub slot: Slot,
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pub segment: Segment,
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pub epoch: Epoch,
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pub stakers_epoch: Epoch,
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}
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impl Clock {
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pub fn from(account: &Account) -> Option<Self> {
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account.deserialize_data().ok()
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}
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pub fn to(&self, account: &mut Account) -> Option<()> {
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account.serialize_data(self).ok()
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}
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pub fn size_of() -> usize {
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serialized_size(&Self::default()).unwrap() as usize
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}
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}
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pub fn create_account(
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lamports: u64,
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slot: Slot,
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segment: Segment,
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epoch: Epoch,
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stakers_epoch: Epoch,
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) -> Account {
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Account::new_data(
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lamports,
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&Clock {
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slot,
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segment,
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epoch,
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stakers_epoch,
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},
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&sysvar::id(),
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)
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.unwrap()
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}
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use crate::account::KeyedAccount;
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use crate::instruction::InstructionError;
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use crate::timing::Segment;
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pub fn from_keyed_account(account: &KeyedAccount) -> Result<Clock, InstructionError> {
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if !check_id(account.unsigned_key()) {
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return Err(InstructionError::InvalidArgument);
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}
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Clock::from(account.account).ok_or(InstructionError::InvalidArgument)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_create_account() {
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let account = create_account(1, 0, 0, 0, 0);
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let clock = Clock::from(&account).unwrap();
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assert_eq!(clock, Clock::default());
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}
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}
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