From 1707f1940d27c5de4fac65dfd5d7ef86f8a0efcf Mon Sep 17 00:00:00 2001
From: Greg Hysen <greg.hysen@gmail.com>
Date: Wed, 11 Apr 2018 10:51:55 -0700
Subject: Replaced read/write Uint256 with generic bytes32, plus casting

---
 .../AssetProxyDispatcher/AssetProxyDispatcher.sol  |  2 +-
 .../AssetProxyDispatcher/IAssetProxyDispatcher.sol |  2 +-
 .../AssetProxyDispatcher/proxies/ERC721Proxy.sol   |  4 ++--
 .../contracts/current/utils/LibBytes/LibBytes.sol  | 24 +++++++++++-----------
 4 files changed, 16 insertions(+), 16 deletions(-)

(limited to 'packages/contracts')

diff --git a/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/AssetProxyDispatcher.sol b/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/AssetProxyDispatcher.sol
index b8a1fb4fe..bf5001575 100644
--- a/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/AssetProxyDispatcher.sol
+++ b/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/AssetProxyDispatcher.sol
@@ -54,7 +54,7 @@ contract AssetProxyDispatcher is
         assetProxy.transferFrom(assetMetadata, from, to, amount);
     }
 
-    /// @dev Registers a new asset proxy.
+    /// @dev Adds a new asset proxy.
     /// @param assetProxyId Id of the asset proxy.
     /// @param newAssetProxyAddress Address of the asset proxy contract to register.
     /// @param currentAssetProxyAddress Address of existing asset proxy to overwrite.
diff --git a/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/IAssetProxyDispatcher.sol b/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/IAssetProxyDispatcher.sol
index fcd1d2d65..534be6114 100644
--- a/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/IAssetProxyDispatcher.sol
+++ b/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/IAssetProxyDispatcher.sol
@@ -30,7 +30,7 @@ contract IAssetProxyDispatcher is
         address oldAssetClassAddress
     );
 
-    /// @dev Sets a new asset proxy.
+    /// @dev Adds a new asset proxy.
     /// @param assetProxyId Id of the asset proxy.
     /// @param newAssetProxyAddress Address of the asset proxy contract to register.
     /// @param currentAssetProxyAddress Address of existing asset proxy to overwrite.
diff --git a/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/proxies/ERC721Proxy.sol b/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/proxies/ERC721Proxy.sol
index d4c548e62..bbad8b392 100644
--- a/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/proxies/ERC721Proxy.sol
+++ b/packages/contracts/src/contracts/current/protocol/AssetProxyDispatcher/proxies/ERC721Proxy.sol
@@ -76,7 +76,7 @@ contract ERC721Proxy is
         assetMetadata = new bytes(53);
         assetMetadata[0] = byte(assetProxyId);
         writeAddress(assetMetadata, 1, tokenAddress);
-        writeUint256(assetMetadata, 21, tokenId);
+        writeBytes32(assetMetadata, 21, bytes32(tokenId));
         return assetMetadata;
     }
 
@@ -90,7 +90,7 @@ contract ERC721Proxy is
     {
         require(assetMetadata.length == 53);
         tokenAddress = readAddress(assetMetadata, 1);
-        tokenId = readUint256(assetMetadata, 21);
+        tokenId = uint256(readBytes32(assetMetadata, 21));
         return (tokenAddress, tokenId);
     }
 }
diff --git a/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol b/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
index 59017d159..a1eca7f45 100644
--- a/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
+++ b/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
@@ -81,36 +81,36 @@ contract LibBytes {
         }
     }
 
-    /// @dev Reads a uint256 value from a position in a byte array.
-    /// @param b Byte array containing a uint256 value.
-    /// @param index Index in byte array of uint256 value.
-    /// @return uint256 value from byte array.
-    function readUint256(
+    /// @dev Reads a bytes32 value from a position in a byte array.
+    /// @param b Byte array containing a bytes32 value.
+    /// @param index Index in byte array of bytes32 value.
+    /// @return bytes32 value from byte array.
+    function readBytes32(
         bytes b,
         uint256 index)
         public pure
-        returns (uint256 result)
+        returns (bytes32 result)
     {
         require(b.length >= index + 32);
 
         // Arrays are prefixed by a 256 bit length parameter
         index += 32;
 
-        // Read the uint256 from array memory
+        // Read the bytes32 from array memory
         assembly {
             result := mload(add(b, index))
         }
         return result;
     }
 
-    /// @dev Writes a uint256 into a specific position in a byte array.
+    /// @dev Writes a bytes32 into a specific position in a byte array.
     /// @param b Byte array to insert <input> into.
     /// @param index Index in byte array of <input>.
-    /// @param input uint256 to put into byte array.
-    function writeUint256(
+    /// @param input bytes32 to put into byte array.
+    function writeBytes32(
         bytes b,
         uint256 index,
-        uint256 input)
+        bytes32 input)
         public pure
     {
         require(b.length >= index + 32);
@@ -118,7 +118,7 @@ contract LibBytes {
         // Arrays are prefixed by a 256 bit length parameter
         index += 32;
 
-        // Read the uint256 from array memory
+        // Read the bytes32 from array memory
         assembly {
             mstore(add(b, index), input)
         }
-- 
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