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* Sovereign EVM balances layer (#95) * Sovereign EVM balances layer (#87) * Frame EVM balances (#65) * Add initital frame balances structure * Add account data balances logic * Define main types * Add imbalances logic * Add DustCleaner * Implement balances related operations * Implement currencies for the pallet * Implement Inspect for the pallet * Make account_data mod private * Leave only free balance data for account * Support try-runtime features * Apply formatting * Fix comment * Add mock with evm, evm-system, evm-balances configs * Add basic setup test * Add fee deduction test * Add issuance_after_tip test * Add refunds_should_work test * Add refunds_and_priority_should_work test * Fix clippy in tests * Fix basec setup works test with evm balances checks * Remove redundant set block in tests * Add call_should_fail_with_priority_greater_than_max_fee test * Add call_should_succeed_with_priority_equal_to_max_fee test * Use EvmSystem as AccountProvider in tests * Add account_should_be_reaped test * Add deposit_into_existing test * Add balance_transfer_works test * Add slashing_balance_works test * Add withdraw_balance_works test * Add transferring_too_high_value_should_not_panic test * Rename test to transfer_works * Add basic tests for currency * Add burn and issue related tests * Add deposit_creating_works test * Add currency_make_free_balance_be test * Rename evm logic related tests * Fix comment * Rename slashing related test * Rename test with make free balance * Rename test with transferring too high value * Assert evm system account existence for currency_deposit_creating_works test * Add EvmSystem events check * Remove license * Use workspace dep * Fix mock * Remove deprecated trait Store * Remove deprecated storage getter * Add Apache-2.0 license * Fix tests * Apply required changes for fungible inspect trait
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[package] | ||
name = "pallet-evm-balances" | ||
version = "1.0.0-dev" | ||
license = "Apache-2.0" | ||
description = "FRAME EVM BALANCES pallet." | ||
edition = { workspace = true } | ||
repository = { workspace = true } | ||
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[package.metadata.docs.rs] | ||
targets = ["x86_64-unknown-linux-gnu"] | ||
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[dependencies] | ||
log = { workspace = true, default-features = false } | ||
scale-codec = { package = "parity-scale-codec", workspace = true } | ||
scale-info = { workspace = true } | ||
# Substrate | ||
frame-support = { workspace = true } | ||
frame-system = { workspace = true } | ||
sp-runtime = { workspace = true } | ||
sp-std = { workspace = true } | ||
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[dev-dependencies] | ||
fp-evm = { workspace = true } | ||
pallet-evm = { workspace = true } | ||
pallet-evm-system = { workspace = true } | ||
pallet-timestamp = { workspace = true } | ||
sp-core = { workspace = true } | ||
sp-io = { workspace = true } | ||
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[features] | ||
default = ["std"] | ||
std = [ | ||
"log/std", | ||
"scale-codec/std", | ||
"scale-info/std", | ||
# Substrate | ||
"frame-support/std", | ||
"frame-system/std", | ||
"pallet-timestamp/std", | ||
"sp-runtime/std", | ||
"sp-std/std", | ||
# Frontier | ||
"fp-evm/std", | ||
"pallet-evm/std", | ||
"pallet-evm-system/std", | ||
] | ||
try-runtime = [ | ||
"frame-support/try-runtime", | ||
"frame-system/try-runtime", | ||
] |
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//! Account balances logic. | ||
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use frame_support::traits::WithdrawReasons; | ||
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use super::*; | ||
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/// All balance information for an account. | ||
#[derive(Encode, Decode, Clone, PartialEq, Eq, Default, RuntimeDebug, MaxEncodedLen, TypeInfo)] | ||
pub struct AccountData<Balance> { | ||
/// Non-reserved part of the balance. There may still be restrictions on this, but it is the | ||
/// total pool what may in principle be transferred, reserved and used for tipping. | ||
/// | ||
/// This is the only balance that matters in terms of most operations on tokens. It | ||
/// alone is used to determine the balance when in the contract execution environment. | ||
pub free: Balance, | ||
} | ||
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impl<Balance: Copy> AccountData<Balance> { | ||
/// The total balance in this account. | ||
pub(crate) fn total(&self) -> Balance { | ||
self.free | ||
} | ||
} | ||
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/// Simplified reasons for withdrawing balance. | ||
#[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, MaxEncodedLen, TypeInfo)] | ||
pub enum Reasons { | ||
/// Paying system transaction fees. | ||
Fee = 0, | ||
/// Any reason other than paying system transaction fees. | ||
Misc = 1, | ||
/// Any reason at all. | ||
All = 2, | ||
} | ||
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impl From<WithdrawReasons> for Reasons { | ||
fn from(r: WithdrawReasons) -> Reasons { | ||
if r == WithdrawReasons::TRANSACTION_PAYMENT { | ||
Reasons::Fee | ||
} else if r.contains(WithdrawReasons::TRANSACTION_PAYMENT) { | ||
Reasons::All | ||
} else { | ||
Reasons::Misc | ||
} | ||
} | ||
} |
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//! Imbalances implementation. | ||
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use frame_support::traits::{SameOrOther, TryDrop}; | ||
use sp_std::{cmp::Ordering, mem}; | ||
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use super::*; | ||
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/// Opaque, move-only struct with private fields that serves as a token denoting that | ||
/// funds have been created without any equal and opposite accounting. | ||
#[must_use] | ||
#[derive(RuntimeDebug, PartialEq, Eq)] | ||
pub struct PositiveImbalance<T: Config<I>, I: 'static = ()>(T::Balance); | ||
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impl<T: Config<I>, I: 'static> PositiveImbalance<T, I> { | ||
/// Create a new positive imbalance from a balance. | ||
pub fn new(amount: T::Balance) -> Self { | ||
PositiveImbalance(amount) | ||
} | ||
} | ||
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/// Opaque, move-only struct with private fields that serves as a token denoting that | ||
/// funds have been destroyed without any equal and opposite accounting. | ||
#[must_use] | ||
#[derive(RuntimeDebug, PartialEq, Eq)] | ||
pub struct NegativeImbalance<T: Config<I>, I: 'static = ()>(T::Balance); | ||
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impl<T: Config<I>, I: 'static> NegativeImbalance<T, I> { | ||
/// Create a new negative imbalance from a balance. | ||
pub fn new(amount: T::Balance) -> Self { | ||
NegativeImbalance(amount) | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> TryDrop for PositiveImbalance<T, I> { | ||
fn try_drop(self) -> result::Result<(), Self> { | ||
self.drop_zero() | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> Default for PositiveImbalance<T, I> { | ||
fn default() -> Self { | ||
Self::zero() | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> Imbalance<T::Balance> for PositiveImbalance<T, I> { | ||
type Opposite = NegativeImbalance<T, I>; | ||
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fn zero() -> Self { | ||
Self(Zero::zero()) | ||
} | ||
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fn drop_zero(self) -> result::Result<(), Self> { | ||
if self.0.is_zero() { | ||
Ok(()) | ||
} else { | ||
Err(self) | ||
} | ||
} | ||
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fn split(self, amount: T::Balance) -> (Self, Self) { | ||
let first = self.0.min(amount); | ||
let second = self.0 - first; | ||
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mem::forget(self); | ||
(Self(first), Self(second)) | ||
} | ||
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fn merge(mut self, other: Self) -> Self { | ||
self.0 = self.0.saturating_add(other.0); | ||
mem::forget(other); | ||
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self | ||
} | ||
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fn subsume(&mut self, other: Self) { | ||
self.0 = self.0.saturating_add(other.0); | ||
mem::forget(other); | ||
} | ||
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fn offset(self, other: Self::Opposite) -> SameOrOther<Self, Self::Opposite> { | ||
let (a, b) = (self.0, other.0); | ||
mem::forget((self, other)); | ||
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match a.cmp(&b) { | ||
Ordering::Greater => SameOrOther::Same(Self(a - b)), | ||
Ordering::Less => SameOrOther::Other(NegativeImbalance::new(b - a)), | ||
Ordering::Equal => SameOrOther::None, | ||
} | ||
} | ||
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fn peek(&self) -> T::Balance { | ||
self.0 | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> TryDrop for NegativeImbalance<T, I> { | ||
fn try_drop(self) -> result::Result<(), Self> { | ||
self.drop_zero() | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> Default for NegativeImbalance<T, I> { | ||
fn default() -> Self { | ||
Self::zero() | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> Imbalance<T::Balance> for NegativeImbalance<T, I> { | ||
type Opposite = PositiveImbalance<T, I>; | ||
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fn zero() -> Self { | ||
Self(Zero::zero()) | ||
} | ||
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fn drop_zero(self) -> result::Result<(), Self> { | ||
if self.0.is_zero() { | ||
Ok(()) | ||
} else { | ||
Err(self) | ||
} | ||
} | ||
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fn split(self, amount: T::Balance) -> (Self, Self) { | ||
let first = self.0.min(amount); | ||
let second = self.0 - first; | ||
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mem::forget(self); | ||
(Self(first), Self(second)) | ||
} | ||
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fn merge(mut self, other: Self) -> Self { | ||
self.0 = self.0.saturating_add(other.0); | ||
mem::forget(other); | ||
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self | ||
} | ||
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fn subsume(&mut self, other: Self) { | ||
self.0 = self.0.saturating_add(other.0); | ||
mem::forget(other); | ||
} | ||
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fn offset(self, other: Self::Opposite) -> SameOrOther<Self, Self::Opposite> { | ||
let (a, b) = (self.0, other.0); | ||
mem::forget((self, other)); | ||
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match a.cmp(&b) { | ||
Ordering::Greater => SameOrOther::Same(Self(a - b)), | ||
Ordering::Less => SameOrOther::Other(PositiveImbalance::new(b - a)), | ||
Ordering::Equal => SameOrOther::None, | ||
} | ||
} | ||
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fn peek(&self) -> T::Balance { | ||
self.0 | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> Drop for PositiveImbalance<T, I> { | ||
/// Basic drop handler will just square up the total issuance. | ||
fn drop(&mut self) { | ||
TotalIssuance::<T, I>::mutate(|v| *v = v.saturating_add(self.0)); | ||
} | ||
} | ||
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impl<T: Config<I>, I: 'static> Drop for NegativeImbalance<T, I> { | ||
/// Basic drop handler will just square up the total issuance. | ||
fn drop(&mut self) { | ||
TotalIssuance::<T, I>::mutate(|v| *v = v.saturating_sub(self.0)); | ||
} | ||
} |
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