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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,105 @@ | ||
| // SPDX-FileCopyrightText: 2024 Demerzel Solutions Limited | ||
| // SPDX-License-Identifier: LGPL-3.0-only | ||
|
|
||
| using Evm.t8n.Errors; | ||
| using Evm.t8n.JsonTypes; | ||
| using Nethermind.Consensus.Ethash; | ||
| using Nethermind.Core; | ||
| using Nethermind.Core.Specs; | ||
| using Nethermind.Core.Test.Builders; | ||
| using Nethermind.Specs.Forks; | ||
|
|
||
| namespace Evm.t8n; | ||
|
|
||
| public class T8NValidator | ||
| public static class T8NValidator | ||
| { | ||
|
|
||
| public static void ApplyChecks(EnvJson env, ISpecProvider specProvider, IReleaseSpec spec) | ||
| { | ||
| ApplyLondonChecks(env, spec); | ||
| ApplyShanghaiChecks(env, spec); | ||
| ApplyCancunChecks(env, spec); | ||
| ApplyMergeChecks(env, specProvider); | ||
| } | ||
|
|
||
| private static void ApplyLondonChecks(EnvJson env, IReleaseSpec spec) | ||
| { | ||
| if (spec is not London) return; | ||
| if (env.CurrentBaseFee != null) return; | ||
|
|
||
| if (!env.ParentBaseFee.HasValue || env.CurrentNumber == 0) | ||
| { | ||
| throw new T8NException("EIP-1559 config but missing 'parentBaseFee' in env section", | ||
| T8NErrorCodes.ErrorConfig); | ||
| } | ||
|
|
||
| var parent = Build.A.BlockHeader.WithNumber(env.CurrentNumber - 1).WithBaseFee(env.ParentBaseFee.Value) | ||
| .WithGasUsed(env.ParentGasUsed).WithGasLimit(env.ParentGasLimit).TestObject; | ||
| env.CurrentBaseFee = BaseFeeCalculator.Calculate(parent, spec); | ||
| } | ||
|
|
||
| private static void ApplyShanghaiChecks(EnvJson env, IReleaseSpec spec) | ||
| { | ||
| if (spec is not Shanghai) return; | ||
| if (env.Withdrawals == null) | ||
| { | ||
| throw new T8NException("Shanghai config but missing 'withdrawals' in env section", | ||
| T8NErrorCodes.ErrorConfig); | ||
| } | ||
| } | ||
|
|
||
| private static void ApplyCancunChecks(EnvJson env, IReleaseSpec spec) | ||
| { | ||
| if (spec is not Cancun) | ||
| { | ||
| env.ParentBeaconBlockRoot = null; | ||
| return; | ||
| } | ||
|
|
||
| if (env.ParentBeaconBlockRoot == null) | ||
| { | ||
| throw new T8NException("post-cancun env requires parentBeaconBlockRoot to be set", | ||
| T8NErrorCodes.ErrorConfig); | ||
| } | ||
| } | ||
|
|
||
| private static void ApplyMergeChecks(EnvJson env, ISpecProvider specProvider) | ||
| { | ||
| if (specProvider.TerminalTotalDifficulty?.IsZero ?? false) | ||
| { | ||
| if (env.CurrentRandom == null) | ||
| throw new T8NException("post-merge requires currentRandom to be defined in env", | ||
| T8NErrorCodes.ErrorConfig); | ||
| if (env.CurrentDifficulty?.IsZero ?? false) | ||
| throw new T8NException("post-merge difficulty must be zero (or omitted) in env", | ||
| T8NErrorCodes.ErrorConfig); | ||
| return; | ||
| } | ||
|
|
||
| if (env.CurrentDifficulty != null) return; | ||
| if (!env.ParentDifficulty.HasValue) | ||
| { | ||
| throw new T8NException( | ||
| "currentDifficulty was not provided, and cannot be calculated due to missing parentDifficulty", | ||
| T8NErrorCodes.ErrorConfig); | ||
| } | ||
|
|
||
| if (env.CurrentNumber == 0) | ||
| { | ||
| throw new T8NException("currentDifficulty needs to be provided for block number 0", | ||
| T8NErrorCodes.ErrorConfig); | ||
| } | ||
|
|
||
| if (env.CurrentTimestamp <= env.ParentTimestamp) | ||
| { | ||
| throw new T8NException( | ||
| $"currentDifficulty cannot be calculated -- currentTime ({env.CurrentTimestamp}) needs to be after parent time ({env.ParentTimestamp})", | ||
| T8NErrorCodes.ErrorConfig); | ||
| } | ||
|
|
||
| EthashDifficultyCalculator difficultyCalculator = new(specProvider); | ||
|
|
||
| env.CurrentDifficulty = difficultyCalculator.Calculate(env.ParentDifficulty.Value, env.ParentTimestamp, | ||
| env.CurrentTimestamp, env.CurrentNumber, env.ParentUncleHash is not null); | ||
| } | ||
| } | ||
|
|