From 0a1ae2c31139e446b2fb3b7f03caf371c6668ae2 Mon Sep 17 00:00:00 2001
From: Amir Bandeali <abandeali1@gmail.com>
Date: Fri, 24 Aug 2018 00:19:06 -0700
Subject: Remove pragma experimental v0.5.0 and use staticcall is assembly

---
 .../Exchange/mixins/MSignatureValidator.sol        | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'packages/contracts/src/2.0.0/protocol/Exchange/mixins')

diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol
index f14f2ba00..75fe9ec46 100644
--- a/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/mixins/MSignatureValidator.sol
@@ -43,4 +43,35 @@ contract MSignatureValidator is
         Trezor,          // 0x08
         NSignatureTypes  // 0x09, number of signature types. Always leave at end.
     }
+
+    /// @dev Verifies signature using logic defined by Wallet contract.
+    /// @param hash Any 32 byte hash.
+    /// @param walletAddress Address that should have signed the given hash
+    ///                      and defines its own signature verification method.
+    /// @param signature Proof that the hash has been signed by signer.
+    /// @return True if the address recovered from the provided signature matches the input signer address.
+    function isValidWalletSignature(
+        bytes32 hash,
+        address walletAddress,
+        bytes signature
+    )
+        internal
+        view
+        returns (bool isValid);
+
+    /// @dev Verifies signature using logic defined by Validator contract.
+    /// @param validatorAddress Address of validator contract.
+    /// @param hash Any 32 byte hash.
+    /// @param signerAddress Address that should have signed the given hash.
+    /// @param signature Proof that the hash has been signed by signer.
+    /// @return True if the address recovered from the provided signature matches the input signer address.
+    function isValidValidatorSignature(
+        address validatorAddress,
+        bytes32 hash,
+        address signerAddress,
+        bytes signature
+    )
+        internal
+        view
+        returns (bool isValid);
 }
-- 
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