rename to fhevm-go, add logger

fhevm/evm.go

@@ -1,8 +1,32 @@
 package fhevm
 
+import "fmt"
+
 // A Logger interface for the EVM.
 type Logger interface {
 	Debug(msg string, keyvals ...interface{})
 	Info(msg string, keyvals ...interface{})
 	Error(msg string, keyvals ...interface{})
 }
+
+// A default Logger implementation that logs to stdout.
+type DefaultLogger struct{}
+
+func toString(keyvals ...interface{}) (ret string) {
+	for _, element := range keyvals {
+		ret += fmt.Sprintf("%v", element) + " "
+	}
+	return
+}
+
+func (*DefaultLogger) Debug(msg string, keyvals ...interface{}) {
+	fmt.Println("Debug: "+msg, toString(keyvals...))
+}
+
+func (*DefaultLogger) Info(msg string, keyvals ...interface{}) {
+	fmt.Println("Info: "+msg, toString(keyvals...))
+}
+
+func (*DefaultLogger) Error(msg string, keyvals ...interface{}) {
+	fmt.Println("Error: "+msg, toString(keyvals...))
+}

fhevm/instructions.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/holiman/uint256"
-	"github.com/zama-ai/fhevm/crypto"
+	"github.com/zama-ai/fhevm-go/crypto"
 )
 
 // A list of slots that we consider reserved in protected storage.

fhevm/interface.go

@@ -15,12 +15,12 @@ type EVMEnvironment interface {
 	// EVM Logger
 	GetLogger() Logger
 
-	// TODO: clarify the meaning of those names
+	// TODO: clarify meaning of the following
 	IsCommitting() bool
 	IsEthCall() bool
 	IsReadOnly() bool
 
-	GetFhevmData() FhevmData
+	GetFhevmData() *FhevmData
 }
 
 type FhevmData struct {

go.mod

@@ -1,4 +1,4 @@
-module github.com/zama-ai/fhevm
+module github.com/zama-ai/fhevm-go
 
 go 1.20
 
@@ -7,7 +7,7 @@ require github.com/ethereum/go-ethereum v1.13.0
 require (
 	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
-	github.com/holiman/uint256 v1.2.3 // indirect
+	github.com/holiman/uint256 v1.2.3
 	golang.org/x/crypto v0.13.0 // indirect
 	golang.org/x/sys v0.12.0 // indirect
 )