64 lines
2.6 KiB
Go
64 lines
2.6 KiB
Go
// Copyright 2021 Evmos Foundation
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// This file is part of Evmos' Ethermint library.
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//
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// The Ethermint library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The Ethermint library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the Ethermint library. If not, see https://github.com/evmos/ethermint/blob/main/LICENSE
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package types
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import (
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"math/big"
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sdkmath "cosmossdk.io/math"
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sdk "github.com/cosmos/cosmos-sdk/types"
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)
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const (
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// AttoPhoton defines the default coin denomination used in Ethermint in:
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//
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// - Staking parameters: denomination used as stake in the dPoS chain
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// - Mint parameters: denomination minted due to fee distribution rewards
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// - Governance parameters: denomination used for spam prevention in proposal deposits
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// - Crisis parameters: constant fee denomination used for spam prevention to check broken invariant
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// - EVM parameters: denomination used for running EVM state transitions in Ethermint.
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AttoPhoton string = "aphoton"
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// BaseDenomUnit defines the base denomination unit for Photons.
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// 1 photon = 1x10^{BaseDenomUnit} aphoton
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BaseDenomUnit = 18
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// DefaultGasPrice is default gas price for evm transactions
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DefaultGasPrice = 20
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)
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// PowerReduction defines the default power reduction value for staking
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var PowerReduction = sdkmath.NewIntFromBigInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(BaseDenomUnit), nil))
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// NewPhotonCoin is a utility function that returns an "aphoton" coin with the given sdkmath.Int amount.
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// The function will panic if the provided amount is negative.
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func NewPhotonCoin(amount sdkmath.Int) sdk.Coin {
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return sdk.NewCoin(AttoPhoton, amount)
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}
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// NewPhotonDecCoin is a utility function that returns an "aphoton" decimal coin with the given sdkmath.Int amount.
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// The function will panic if the provided amount is negative.
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func NewPhotonDecCoin(amount sdkmath.Int) sdk.DecCoin {
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return sdk.NewDecCoin(AttoPhoton, amount)
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}
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// NewPhotonCoinInt64 is a utility function that returns an "aphoton" coin with the given int64 amount.
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// The function will panic if the provided amount is negative.
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func NewPhotonCoinInt64(amount int64) sdk.Coin {
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return sdk.NewInt64Coin(AttoPhoton, amount)
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}
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