From 734da9df7b728fbb49fef653fb03c95f9526567d Mon Sep 17 00:00:00 2001
From: dreamer <dreamer.x.cn@gmail.com>
Date: Fri, 19 Apr 2024 11:20:51 +0800
Subject: [PATCH] remove unused code

---
 modules/token/keeper/grpc_query.go |  2 +-
 modules/token/keeper/msg_server.go |  8 +-------
 modules/token/types/v1/msgs.go     |  5 +++--
 modules/token/types/validation.go  | 12 ++----------
 4 files changed, 7 insertions(+), 20 deletions(-)

diff --git a/modules/token/keeper/grpc_query.go b/modules/token/keeper/grpc_query.go
index 5160bfff..b651af7a 100644
--- a/modules/token/keeper/grpc_query.go
+++ b/modules/token/keeper/grpc_query.go
@@ -244,7 +244,7 @@ func (k Keeper) Balances(c context.Context, req *v1.QueryBalancesRequest) (*v1.Q
 		if err != nil {
 			return nil, status.Error(codes.Internal, err.Error())
 		}
-		balances = balances.Add(sdk.NewCoin(token.GetContract(), sdkmath.NewIntFromBigInt(erc20Balance)))
+		balances = balances.Add(sdk.NewCoin("erc20/"+token.GetContract(), sdkmath.NewIntFromBigInt(erc20Balance)))
 	}
 	return &v1.QueryBalancesResponse{Balances: balances}, nil
 }
diff --git a/modules/token/keeper/msg_server.go b/modules/token/keeper/msg_server.go
index 59db1ca1..f3598a56 100644
--- a/modules/token/keeper/msg_server.go
+++ b/modules/token/keeper/msg_server.go
@@ -2,7 +2,6 @@ package keeper
 
 import (
 	"context"
-	"encoding/hex"
 
 	errorsmod "cosmossdk.io/errors"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -318,12 +317,7 @@ func (m msgServer) SwapToERC20(goCtx context.Context, msg *v1.MsgSwapToERC20) (*
 		return nil, err
 	}
 
-	bz, err := hex.DecodeString(msg.Receiver)
-	if err != nil {
-		return nil, errorsmod.Wrapf(sdkerrors.ErrInvalidAddress, "expecting a hex address of 0x, got %s", msg.Receiver)
-	}
-	receiver := common.BytesToAddress(bz)
-
+	receiver := common.HexToAddress(msg.Receiver)
 	if err := m.k.SwapToERC20(ctx, sender, receiver, msg.Amount); err != nil {
 		return nil, err
 	}
diff --git a/modules/token/types/v1/msgs.go b/modules/token/types/v1/msgs.go
index 46471994..cff0b48e 100644
--- a/modules/token/types/v1/msgs.go
+++ b/modules/token/types/v1/msgs.go
@@ -7,6 +7,7 @@ import (
 	errorsmod "cosmossdk.io/errors"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/ethereum/go-ethereum/common"
 
 	tokentypes "github.com/irisnet/irismod/modules/token/types"
 )
@@ -420,8 +421,8 @@ func (m *MsgSwapToERC20) ValidateBasic() error {
 		return errorsmod.Wrapf(sdkerrors.ErrInvalidAddress, "invalid sender address (%s)", err)
 	}
 
-	if tokentypes.IsValidEthAddress(m.Receiver) {
-		return errorsmod.Wrapf(sdkerrors.ErrInvalidAddress, "expecting a hex address of 0x, got %s", m.Receiver)
+	if !common.IsHexAddress(m.Receiver) {
+		return errorsmod.Wrapf(sdkerrors.ErrInvalidAddress, "expecting a hex address, got %s", m.Receiver)
 	}
 
 	if !m.Amount.IsValid() {
diff --git a/modules/token/types/validation.go b/modules/token/types/validation.go
index 3a58eb10..24d477b9 100644
--- a/modules/token/types/validation.go
+++ b/modules/token/types/validation.go
@@ -51,10 +51,8 @@ var (
 	regexpMinUintFmt = fmt.Sprintf("^[a-z][a-z0-9]{%d,%d}$", MinimumMinUnitLen-1, MaximumMinUnitLen-1)
 	regexpMinUint    = regexp.MustCompile(regexpMinUintFmt).MatchString
 
-	regexpEthAddressLowerStr = "^0x[0-9a-f]{40}$"
-	regexpEthAddressUpperStr = "^0x[0-9A-F]{40}$"
-	regexpEthAddressLower    = regexp.MustCompile(regexpEthAddressLowerStr).MatchString
-	regexpEthAddressUpper    = regexp.MustCompile(regexpEthAddressUpperStr).MatchString
+	regexpEthAddressStr = "^0x[0-9a-f]{40}$"
+	regexpEthAddress    = regexp.MustCompile(regexpEthAddressStr).MatchString
 )
 
 // ValidateInitialSupply verifies whether the initial supply is legal
@@ -120,9 +118,3 @@ func ValidateCoin(coin sdk.Coin) error {
 	}
 	return ValidateMinUnit(coin.Denom)
 }
-
-// IsValidEthAddress checks if the given address is valid ethereum address
-func IsValidEthAddress(address string) bool {
-	address = strings.ToLower(address)
-	return regexpEthAddressLower(address) || regexpEthAddressUpper(address)
-}