From 89082466fc63afccf2b35ed22d01093ae19ca57e Mon Sep 17 00:00:00 2001
From: i-norden <iansnorden@gmail.com>
Date: Wed, 1 Nov 2023 14:51:19 -0500
Subject: [PATCH] BlockOverride required by tracing endpoints

---
 pkg/eth/api.go | 43 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/pkg/eth/api.go b/pkg/eth/api.go
index ef4da70c..8709754f 100644
--- a/pkg/eth/api.go
+++ b/pkg/eth/api.go
@@ -27,7 +27,9 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/cerc-io/plugeth-statediff"
+	"github.com/ethereum/go-ethereum/core/vm"
+
+	statediff "github.com/cerc-io/plugeth-statediff"
 	"github.com/ethereum/go-ethereum/accounts/abi"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
@@ -1008,6 +1010,45 @@ func (diff *StateOverride) Apply(state *ipld_direct_state.StateDB) error {
 	return nil
 }
 
+// BlockOverrides is a set of header fields to override.
+type BlockOverrides struct {
+	Number     *hexutil.Big
+	Difficulty *hexutil.Big
+	Time       *hexutil.Uint64
+	GasLimit   *hexutil.Uint64
+	Coinbase   *common.Address
+	Random     *common.Hash
+	BaseFee    *hexutil.Big
+}
+
+// Apply overrides the given header fields into the given block context.
+func (diff *BlockOverrides) Apply(blockCtx *vm.BlockContext) {
+	if diff == nil {
+		return
+	}
+	if diff.Number != nil {
+		blockCtx.BlockNumber = diff.Number.ToInt()
+	}
+	if diff.Difficulty != nil {
+		blockCtx.Difficulty = diff.Difficulty.ToInt()
+	}
+	if diff.Time != nil {
+		blockCtx.Time = uint64(*diff.Time)
+	}
+	if diff.GasLimit != nil {
+		blockCtx.GasLimit = uint64(*diff.GasLimit)
+	}
+	if diff.Coinbase != nil {
+		blockCtx.Coinbase = *diff.Coinbase
+	}
+	if diff.Random != nil {
+		blockCtx.Random = diff.Random
+	}
+	if diff.BaseFee != nil {
+		blockCtx.BaseFee = diff.BaseFee.ToInt()
+	}
+}
+
 // Call executes the given transaction on the state for the given block number.
 //
 // Additionally, the caller can specify a batch of contract for fields overriding.