Initial refactor of order-utils. Move many utils from contracts into this package.

1 files changed, 0 insertions, 144 deletions

diff --git a/packages/contracts/src/utils/asset_proxy_utils.ts b/packages/contracts/src/utils/asset_proxy_utils.ts
deleted file mode 100644
index c042da5d0..000000000
--- a/packages/contracts/src/utils/asset_proxy_utils.ts
+++ /dev/null
@@ -1,144 +0,0 @@
-import { BigNumber } from '@0xproject/utils';
-import BN = require('bn.js');
-import ethUtil = require('ethereumjs-util');
-
-import { AssetProxyId, ERC20ProxyData, ERC721ProxyData, ProxyData } from './types';
-
-export const assetProxyUtils = {
-    encodeAssetProxyId(assetProxyId: AssetProxyId): Buffer {
-        return ethUtil.toBuffer(assetProxyId);
-    },
-    decodeAssetProxyId(encodedAssetProxyId: Buffer): AssetProxyId {
-        return ethUtil.bufferToInt(encodedAssetProxyId);
-    },
-    encodeAddress(address: string): Buffer {
-        if (!ethUtil.isValidAddress(address)) {
-            throw new Error(`Invalid Address: ${address}`);
-        }
-        const encodedAddress = ethUtil.toBuffer(address);
-        return encodedAddress;
-    },
-    decodeAddress(encodedAddress: Buffer): string {
-        const address = ethUtil.bufferToHex(encodedAddress);
-        if (!ethUtil.isValidAddress(address)) {
-            throw new Error(`Invalid Address: ${address}`);
-        }
-        return address;
-    },
-    encodeUint256(value: BigNumber): Buffer {
-        const formattedValue = new BN(value.toString(10));
-        const encodedValue = ethUtil.toBuffer(formattedValue);
-        const paddedValue = ethUtil.setLengthLeft(encodedValue, 32);
-        return paddedValue;
-    },
-    decodeUint256(encodedValue: Buffer): BigNumber {
-        const formattedValue = ethUtil.bufferToHex(encodedValue);
-        const value = new BigNumber(formattedValue, 16);
-        return value;
-    },
-    encodeERC20ProxyData(tokenAddress: string): string {
-        const encodedAssetProxyId = assetProxyUtils.encodeAssetProxyId(AssetProxyId.ERC20);
-        const encodedAddress = assetProxyUtils.encodeAddress(tokenAddress);
-        const encodedMetadata = Buffer.concat([encodedAssetProxyId, encodedAddress]);
-        const encodedMetadataHex = ethUtil.bufferToHex(encodedMetadata);
-        return encodedMetadataHex;
-    },
-    decodeERC20ProxyData(proxyData: string): ERC20ProxyData {
-        const encodedProxyMetadata = ethUtil.toBuffer(proxyData);
-        if (encodedProxyMetadata.byteLength !== 21) {
-            throw new Error(
-                `Could not decode ERC20 Proxy Data. Expected length of encoded data to be 21. Got ${
-                    encodedProxyMetadata.byteLength
-                }`,
-            );
-        }
-        const encodedAssetProxyId = encodedProxyMetadata.slice(0, 1);
-        const assetProxyId = assetProxyUtils.decodeAssetProxyId(encodedAssetProxyId);
-        if (assetProxyId !== AssetProxyId.ERC20) {
-            throw new Error(
-                `Could not decode ERC20 Proxy Data. Expected Asset Proxy Id to be ERC20 (${
-                    AssetProxyId.ERC20
-                }), but got ${assetProxyId}`,
-            );
-        }
-        const encodedTokenAddress = encodedProxyMetadata.slice(1, 21);
-        const tokenAddress = assetProxyUtils.decodeAddress(encodedTokenAddress);
-        const erc20ProxyData = {
-            assetProxyId,
-            tokenAddress,
-        };
-        return erc20ProxyData;
-    },
-    encodeERC721ProxyData(tokenAddress: string, tokenId: BigNumber): string {
-        const encodedAssetProxyId = assetProxyUtils.encodeAssetProxyId(AssetProxyId.ERC721);
-        const encodedAddress = assetProxyUtils.encodeAddress(tokenAddress);
-        const encodedTokenId = assetProxyUtils.encodeUint256(tokenId);
-        const encodedMetadata = Buffer.concat([encodedAssetProxyId, encodedAddress, encodedTokenId]);
-        const encodedMetadataHex = ethUtil.bufferToHex(encodedMetadata);
-        return encodedMetadataHex;
-    },
-    decodeERC721ProxyData(proxyData: string): ERC721ProxyData {
-        const encodedProxyMetadata = ethUtil.toBuffer(proxyData);
-        if (encodedProxyMetadata.byteLength !== 53) {
-            throw new Error(
-                `Could not decode ERC20 Proxy Data. Expected length of encoded data to be 53. Got ${
-                    encodedProxyMetadata.byteLength
-                }`,
-            );
-        }
-        const encodedAssetProxyId = encodedProxyMetadata.slice(0, 1);
-        const assetProxyId = assetProxyUtils.decodeAssetProxyId(encodedAssetProxyId);
-        if (assetProxyId !== AssetProxyId.ERC721) {
-            throw new Error(
-                `Could not decode ERC721 Proxy Data. Expected Asset Proxy Id to be ERC721 (${
-                    AssetProxyId.ERC721
-                }), but got ${assetProxyId}`,
-            );
-        }
-        const encodedTokenAddress = encodedProxyMetadata.slice(1, 21);
-        const tokenAddress = assetProxyUtils.decodeAddress(encodedTokenAddress);
-        const encodedTokenId = encodedProxyMetadata.slice(21, 53);
-        const tokenId = assetProxyUtils.decodeUint256(encodedTokenId);
-        const erc721ProxyData = {
-            assetProxyId,
-            tokenAddress,
-            tokenId,
-        };
-        return erc721ProxyData;
-    },
-    decodeProxyDataId(proxyData: string): AssetProxyId {
-        const encodedProxyMetadata = ethUtil.toBuffer(proxyData);
-        if (encodedProxyMetadata.byteLength < 1) {
-            throw new Error(
-                `Could not decode Proxy Data. Expected length of encoded data to be at least 1. Got ${
-                    encodedProxyMetadata.byteLength
-                }`,
-            );
-        }
-        const encodedAssetProxyId = encodedProxyMetadata.slice(0, 1);
-        const assetProxyId = assetProxyUtils.decodeAssetProxyId(encodedAssetProxyId);
-        return assetProxyId;
-    },
-    decodeProxyData(proxyData: string): ProxyData {
-        const assetProxyId = assetProxyUtils.decodeProxyDataId(proxyData);
-        switch (assetProxyId) {
-            case AssetProxyId.ERC20:
-                const erc20ProxyData = assetProxyUtils.decodeERC20ProxyData(proxyData);
-                const generalizedERC20ProxyData = {
-                    assetProxyId,
-                    tokenAddress: erc20ProxyData.tokenAddress,
-                };
-                return generalizedERC20ProxyData;
-            case AssetProxyId.ERC721:
-                const erc721ProxyData = assetProxyUtils.decodeERC721ProxyData(proxyData);
-                const generaliedERC721ProxyData = {
-                    assetProxyId,
-                    tokenAddress: erc721ProxyData.tokenAddress,
-                    data: erc721ProxyData.tokenId,
-                };
-                return generaliedERC721ProxyData;
-            default:
-                throw new Error(`Unrecognized asset proxy id: ${assetProxyId}`);
-        }
-    },
-};