syscall work, rename syscall to sysvar, rename current to clock (#5074)

* syscall work, rename syscall to sysvar, rename current to clock

* missed one

* nit

sdk/src/sysvar/clock.rs

@@ -0,0 +1,79 @@
+//! This account contains the clock slot, epoch, and stakers_epoch
+//!
+use crate::account::Account;
+use crate::sysvar;
+use bincode::serialized_size;
+
+pub use crate::timing::{Epoch, Slot};
+
+const ID: [u8; 32] = [
+    6, 167, 213, 23, 24, 199, 116, 201, 40, 86, 99, 152, 105, 29, 94, 182, 139, 94, 184, 163, 155,
+    75, 109, 92, 115, 85, 91, 33, 0, 0, 0, 0,
+];
+
+crate::solana_name_id!(ID, "SysvarC1ock11111111111111111111111111111111");
+
+#[repr(C)]
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq)]
+pub struct Clock {
+    pub slot: Slot,
+    pub segment: Segment,
+    pub epoch: Epoch,
+    pub stakers_epoch: Epoch,
+}
+
+impl Clock {
+    pub fn from(account: &Account) -> Option<Self> {
+        account.deserialize_data().ok()
+    }
+    pub fn to(&self, account: &mut Account) -> Option<()> {
+        account.serialize_data(self).ok()
+    }
+
+    pub fn size_of() -> usize {
+        serialized_size(&Self::default()).unwrap() as usize
+    }
+}
+
+pub fn create_account(
+    lamports: u64,
+    slot: Slot,
+    segment: Segment,
+    epoch: Epoch,
+    stakers_epoch: Epoch,
+) -> Account {
+    Account::new_data(
+        lamports,
+        &Clock {
+            slot,
+            segment,
+            epoch,
+            stakers_epoch,
+        },
+        &sysvar::id(),
+    )
+    .unwrap()
+}
+
+use crate::account::KeyedAccount;
+use crate::instruction::InstructionError;
+use crate::timing::Segment;
+
+pub fn from_keyed_account(account: &KeyedAccount) -> Result<Clock, InstructionError> {
+    if !check_id(account.unsigned_key()) {
+        return Err(InstructionError::InvalidArgument);
+    }
+    Clock::from(account.account).ok_or(InstructionError::InvalidArgument)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_create_account() {
+        let account = create_account(1, 0, 0, 0, 0);
+        let clock = Clock::from(&account).unwrap();
+        assert_eq!(clock, Clock::default());
+    }
+}

sdk/src/sysvar/fees.rs

@@ -0,0 +1,57 @@
+//! This account contains the current cluster fees
+//!
+use crate::account::Account;
+use crate::fee_calculator::FeeCalculator;
+use crate::sysvar;
+use bincode::serialized_size;
+
+///  fees account pubkey
+const ID: [u8; 32] = [
+    6, 167, 213, 23, 24, 226, 90, 141, 131, 80, 60, 37, 26, 122, 240, 113, 38, 253, 114, 0, 223,
+    111, 196, 237, 82, 106, 156, 144, 0, 0, 0, 0,
+];
+
+crate::solana_name_id!(ID, "SysvarFees111111111111111111111111111111111");
+
+#[repr(C)]
+#[derive(Serialize, Deserialize, Debug, Default)]
+pub struct Fees {
+    pub fee_calculator: FeeCalculator,
+}
+
+impl Fees {
+    pub fn from(account: &Account) -> Option<Self> {
+        account.deserialize_data().ok()
+    }
+    pub fn to(&self, account: &mut Account) -> Option<()> {
+        account.serialize_data(self).ok()
+    }
+
+    pub fn size_of() -> usize {
+        serialized_size(&Fees::default()).unwrap() as usize
+    }
+}
+
+pub fn create_account(lamports: u64, fee_calculator: &FeeCalculator) -> Account {
+    Account::new_data(
+        lamports,
+        &Fees {
+            fee_calculator: fee_calculator.clone(),
+        },
+        &sysvar::id(),
+    )
+    .unwrap()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_fees_create_account() {
+        let lamports = 42;
+        let account = create_account(lamports, &FeeCalculator::default());
+        let fees = Fees::from(&account).unwrap();
+        assert_eq!(fees.fee_calculator, FeeCalculator::default());
+    }
+}

sdk/src/sysvar/mod.rs

@@ -0,0 +1,21 @@
+//! named accounts for synthesized data accounts for bank state, etc.
+//!
+use crate::pubkey::Pubkey;
+
+pub mod clock;
+pub mod fees;
+pub mod rewards;
+pub mod slot_hashes;
+
+pub fn is_sysvar_id(id: &Pubkey) -> bool {
+    clock::check_id(id) || fees::check_id(id) || rewards::check_id(id) || slot_hashes::check_id(id)
+}
+
+/// "Sysvar1111111111111111111111111111111111111"
+///   owner pubkey for sysvar accounts
+const ID: [u8; 32] = [
+    6, 167, 213, 23, 24, 117, 247, 41, 199, 61, 147, 64, 143, 33, 97, 32, 6, 126, 216, 140, 118,
+    224, 140, 40, 127, 193, 148, 96, 0, 0, 0, 0,
+];
+
+crate::solana_name_id!(ID, "Sysvar1111111111111111111111111111111111111");

sdk/src/sysvar/rewards.rs

@@ -0,0 +1,70 @@
+//! This account contains the current cluster rewards point values
+//!
+use crate::account::Account;
+use crate::sysvar;
+use bincode::serialized_size;
+
+///  account pubkey
+const ID: [u8; 32] = [
+    6, 167, 213, 23, 25, 44, 97, 55, 206, 224, 146, 217, 182, 146, 62, 225, 204, 214, 25, 3, 250,
+    130, 184, 161, 97, 145, 87, 141, 128, 0, 0, 0,
+];
+
+crate::solana_name_id!(ID, "SysvarRewards111111111111111111111111111111");
+
+#[repr(C)]
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq)]
+pub struct Rewards {
+    pub validator_point_value: f64,
+    pub storage_point_value: f64,
+}
+
+impl Rewards {
+    pub fn from(account: &Account) -> Option<Self> {
+        account.deserialize_data().ok()
+    }
+    pub fn to(&self, account: &mut Account) -> Option<()> {
+        account.serialize_data(self).ok()
+    }
+    pub fn size_of() -> usize {
+        serialized_size(&Self::default()).unwrap() as usize
+    }
+}
+
+pub fn create_account(
+    lamports: u64,
+    validator_point_value: f64,
+    storage_point_value: f64,
+) -> Account {
+    Account::new_data(
+        lamports,
+        &Rewards {
+            validator_point_value,
+            storage_point_value,
+        },
+        &sysvar::id(),
+    )
+    .unwrap()
+}
+
+use crate::account::KeyedAccount;
+use crate::instruction::InstructionError;
+pub fn from_keyed_account(account: &KeyedAccount) -> Result<Rewards, InstructionError> {
+    if !check_id(account.unsigned_key()) {
+        dbg!(account.unsigned_key());
+        return Err(InstructionError::InvalidArgument);
+    }
+    Rewards::from(account.account).ok_or(InstructionError::InvalidAccountData)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_create_account() {
+        let account = create_account(1, 0.0, 0.0);
+        let rewards = Rewards::from(&account).unwrap();
+        assert_eq!(rewards, Rewards::default());
+    }
+}

sdk/src/sysvar/slot_hashes.rs

@@ -0,0 +1,100 @@
+//! named accounts for synthesized data accounts for bank state, etc.
+//!
+//! this account carries the Bank's most recent blockhashes for some N parents
+//!
+use crate::account::Account;
+use crate::hash::Hash;
+use crate::sysvar;
+use bincode::serialized_size;
+use std::ops::Deref;
+
+pub use crate::timing::Slot;
+
+const ID: [u8; 32] = [
+    6, 167, 213, 23, 25, 44, 97, 55, 206, 224, 146, 217, 182, 146, 62, 225, 204, 214, 25, 3, 250,
+    130, 184, 161, 97, 145, 87, 141, 128, 0, 0, 0,
+];
+
+crate::solana_name_id!(ID, "SysvarRewards111111111111111111111111111111");
+
+pub const MAX_SLOT_HASHES: usize = 512; // 512 slots to get your vote in
+
+#[derive(Serialize, Deserialize, PartialEq, Debug)]
+pub struct SlotHashes {
+    // non-pub to keep control of size
+    inner: Vec<(Slot, Hash)>,
+}
+
+impl SlotHashes {
+    pub fn from(account: &Account) -> Option<Self> {
+        account.deserialize_data().ok()
+    }
+    pub fn to(&self, account: &mut Account) -> Option<()> {
+        account.serialize_data(self).ok()
+    }
+
+    pub fn size_of() -> usize {
+        serialized_size(&SlotHashes {
+            inner: vec![(0, Hash::default()); MAX_SLOT_HASHES],
+        })
+        .unwrap() as usize
+    }
+    pub fn add(&mut self, slot: Slot, hash: Hash) {
+        self.inner.insert(0, (slot, hash));
+        self.inner.truncate(MAX_SLOT_HASHES);
+    }
+    pub fn new(slot_hashes: &[(Slot, Hash)]) -> Self {
+        Self {
+            inner: slot_hashes.to_vec(),
+        }
+    }
+}
+
+impl Deref for SlotHashes {
+    type Target = Vec<(u64, Hash)>;
+    fn deref(&self) -> &Self::Target {
+        &self.inner
+    }
+}
+
+pub fn create_account(lamports: u64, slot_hashes: &[(Slot, Hash)]) -> Account {
+    let mut account = Account::new(lamports, SlotHashes::size_of(), &sysvar::id());
+    SlotHashes::new(slot_hashes).to(&mut account).unwrap();
+    account
+}
+
+use crate::account::KeyedAccount;
+use crate::instruction::InstructionError;
+pub fn from_keyed_account(account: &KeyedAccount) -> Result<SlotHashes, InstructionError> {
+    if !check_id(account.unsigned_key()) {
+        return Err(InstructionError::InvalidArgument);
+    }
+    SlotHashes::from(account.account).ok_or(InstructionError::InvalidArgument)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::hash::hash;
+
+    #[test]
+    fn test_create_account() {
+        let lamports = 42;
+        let account = create_account(lamports, &[]);
+        assert_eq!(account.data.len(), SlotHashes::size_of());
+        let slot_hashes = SlotHashes::from(&account);
+        assert_eq!(slot_hashes, Some(SlotHashes { inner: vec![] }));
+        let mut slot_hashes = slot_hashes.unwrap();
+        for i in 0..MAX_SLOT_HASHES + 1 {
+            slot_hashes.add(
+                i as u64,
+                hash(&[(i >> 24) as u8, (i >> 16) as u8, (i >> 8) as u8, i as u8]),
+            );
+        }
+        for i in 0..MAX_SLOT_HASHES {
+            assert_eq!(slot_hashes[i].0, (MAX_SLOT_HASHES - i) as u64);
+        }
+
+        assert_eq!(slot_hashes.len(), MAX_SLOT_HASHES);
+    }
+}