From 23339243b68acca1ebbb3070f8a380fb3c9faee6 Mon Sep 17 00:00:00 2001
From: Dan Liu <liudaniel@qq.com>
Date: Sat, 26 Mar 2022 10:41:00 +0800
Subject: [PATCH] refactor(PriceOracle): return constant price when base asset
 and quote asset are same.

---
 contracts/protocol/PriceOracle.sol | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/contracts/protocol/PriceOracle.sol b/contracts/protocol/PriceOracle.sol
index 8a89381e1..fda1a62d5 100644
--- a/contracts/protocol/PriceOracle.sol
+++ b/contracts/protocol/PriceOracle.sol
@@ -120,6 +120,10 @@ contract PriceOracle is Ownable {
             "PriceOracle.getPrice: Caller must be system contract."
         );
 
+        if (_assetOne == _assetTwo) {
+            return 10**18;
+        }
+        
         bool priceFound;
         uint256 price;