From ec965607cd93dc53332052a939a21faa24c7d876 Mon Sep 17 00:00:00 2001
From: philip-morlier <philipmorlier@gmail.com>
Date: Tue, 15 Feb 2022 16:56:50 -0800
Subject: [PATCH] Cahnges made in service of pretracer type.

---
 core/plugin_hooks.go         | 5 +++++
 core/state_transition.go     | 3 +++
 go.mod                       | 2 ++
 plugins/wrappers/wrappers.go | 4 ++++
 4 files changed, 14 insertions(+)

diff --git a/core/plugin_hooks.go b/core/plugin_hooks.go
index e1a2544bb..f0c61667c 100644
--- a/core/plugin_hooks.go
+++ b/core/plugin_hooks.go
@@ -185,6 +185,11 @@ func pluginReorg(commonBlock *types.Block, oldChain, newChain types.Blocks) {
 	PluginReorg(plugins.DefaultPluginLoader, commonBlock, oldChain, newChain)
 }
 
+type PreTracer interface {
+	CapturePreStart(from common.Address, to *common.Address, input []byte, gas uint64, value *big.Int) 
+
+}
+
 type metaTracer struct {
 	tracers []core.BlockTracer
 }
diff --git a/core/state_transition.go b/core/state_transition.go
index 05d563307..daf45cd0f 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -284,6 +284,9 @@ func (st *StateTransition) TransitionDb() (*ExecutionResult, error) {
 	// 6. caller has enough balance to cover asset transfer for **topmost** call
 
 	// Check clauses 1-3, buy gas if everything is correct
+	if v, ok := st.evm.Config.Tracer.(PreTracer); ok {
+		v.CapturePreStart(st.msg.From(),  st.msg.To(), st.data, st.gas, st.msg.Value())
+		}
 	if err := st.preCheck(); err != nil {
 		return nil, err
 	}
diff --git a/go.mod b/go.mod
index 62f87601e..3edfa84eb 100644
--- a/go.mod
+++ b/go.mod
@@ -74,3 +74,5 @@ require (
 	gotest.tools v2.2.0+incompatible // indirect
 
 )
+
+replace github.com/openrelayxyz/plugeth-utils v0.0.14 => ../plugeth-utils
diff --git a/plugins/wrappers/wrappers.go b/plugins/wrappers/wrappers.go
index 0b0389f4a..eada1aaa5 100644
--- a/plugins/wrappers/wrappers.go
+++ b/plugins/wrappers/wrappers.go
@@ -73,6 +73,10 @@ type WrappedTracer struct {
 func NewWrappedTracer(r core.TracerResult) *WrappedTracer {
 	return &WrappedTracer{r}
 }
+func (w WrappedTracer) CapturePreStart(from common.Address, to *common.Address, input []byte, gas uint64, value *big.Int) {
+	if v, ok := w.r.(core.PreTracer); ok {
+	v.CapturePreStart(core.Address(from), (*core.Address)(to), input, gas, value)}
+}
 func (w WrappedTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
 	w.r.CaptureStart(core.Address(from), core.Address(to), create, input, gas, value)
 }