feat(bindings): parse solidity custom errors (#163)

Co-authored-by: David <david@taiko.xyz>

bindings/.githead

@@ -1 +1 @@
-796a13fe713b82afa813d4c27eb5559b66bd89e9
+16993cdb081b831420c7e86d981afd11726197d1

bindings/error/error.go

@@ -0,0 +1,50 @@
+package error
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+// Taken from: https://github.com/ethereum/go-ethereum/blob/master/rpc/json.go
+type JsonRPCError struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+// Error implements the Go error interface.
+func (err *JsonRPCError) Error() string {
+	if err.Message == "" {
+		return fmt.Sprintf("json-rpc error %d", err.Code)
+	}
+	return err.Message
+}
+
+// GetRevertReasonHash returns a solidity contract call revert reason hash.
+func GetRevertReasonHash(err error) (string, error) {
+	bytes, err := json.Marshal(errors.Unwrap(err))
+	if err != nil {
+		return "", err
+	}
+	rpcError := new(JsonRPCError)
+	if err = json.Unmarshal(bytes, rpcError); err != nil {
+		return "", err
+	}
+	reasonHash, ok := rpcError.Data.(string)
+	if !ok {
+		return "", fmt.Errorf("invalid revert reason, %T", rpcError.Data)
+	}
+	return reasonHash, nil
+}
+
+// CheckExpectRevertReason checks if the revert reason in solidity contracts matches the expectation.
+func CheckExpectRevertReason(expect string, revertErr error) (bool, error) {
+	reason, err := GetRevertReasonHash(revertErr)
+	if err != nil {
+		return false, err
+	}
+	return fmt.Sprintf("%#x", crypto.Keccak256([]byte(expect)))[:10] == reason, nil
+}