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authorGreg Hysen <greg.hysen@gmail.com>2018-05-17 08:55:50 +0800
committerGreg Hysen <greg.hysen@gmail.com>2018-05-19 08:01:06 +0800
commit2eb5819851252eb90207765ed64a119ad138c0ad (patch)
treebbc49596d4d60d0a5b40cff207e527f71ab99e41 /packages/contracts/src/utils
parente748e1891b6af5c5f60f5c1fc45482ace6a3b2ad (diff)
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Cleaned up interface for decoding proxy data. Added a general decoder, which should be useful for the forwarding contract code.
Diffstat (limited to 'packages/contracts/src/utils')
-rw-r--r--packages/contracts/src/utils/asset_proxy_utils.ts41
-rw-r--r--packages/contracts/src/utils/types.ts17
2 files changed, 53 insertions, 5 deletions
diff --git a/packages/contracts/src/utils/asset_proxy_utils.ts b/packages/contracts/src/utils/asset_proxy_utils.ts
index 9a26a9ca7..c042da5d0 100644
--- a/packages/contracts/src/utils/asset_proxy_utils.ts
+++ b/packages/contracts/src/utils/asset_proxy_utils.ts
@@ -2,7 +2,7 @@ import { BigNumber } from '@0xproject/utils';
import BN = require('bn.js');
import ethUtil = require('ethereumjs-util');
-import { AssetProxyId } from './types';
+import { AssetProxyId, ERC20ProxyData, ERC721ProxyData, ProxyData } from './types';
export const assetProxyUtils = {
encodeAssetProxyId(assetProxyId: AssetProxyId): Buffer {
@@ -43,7 +43,7 @@ export const assetProxyUtils = {
const encodedMetadataHex = ethUtil.bufferToHex(encodedMetadata);
return encodedMetadataHex;
},
- decodeERC20ProxyData(proxyData: string): string /* tokenAddress */ {
+ decodeERC20ProxyData(proxyData: string): ERC20ProxyData {
const encodedProxyMetadata = ethUtil.toBuffer(proxyData);
if (encodedProxyMetadata.byteLength !== 21) {
throw new Error(
@@ -63,7 +63,11 @@ export const assetProxyUtils = {
}
const encodedTokenAddress = encodedProxyMetadata.slice(1, 21);
const tokenAddress = assetProxyUtils.decodeAddress(encodedTokenAddress);
- return tokenAddress;
+ const erc20ProxyData = {
+ assetProxyId,
+ tokenAddress,
+ };
+ return erc20ProxyData;
},
encodeERC721ProxyData(tokenAddress: string, tokenId: BigNumber): string {
const encodedAssetProxyId = assetProxyUtils.encodeAssetProxyId(AssetProxyId.ERC721);
@@ -73,7 +77,7 @@ export const assetProxyUtils = {
const encodedMetadataHex = ethUtil.bufferToHex(encodedMetadata);
return encodedMetadataHex;
},
- decodeERC721ProxyData(proxyData: string): [string /* tokenAddress */, BigNumber /* tokenId */] {
+ decodeERC721ProxyData(proxyData: string): ERC721ProxyData {
const encodedProxyMetadata = ethUtil.toBuffer(proxyData);
if (encodedProxyMetadata.byteLength !== 53) {
throw new Error(
@@ -95,7 +99,12 @@ export const assetProxyUtils = {
const tokenAddress = assetProxyUtils.decodeAddress(encodedTokenAddress);
const encodedTokenId = encodedProxyMetadata.slice(21, 53);
const tokenId = assetProxyUtils.decodeUint256(encodedTokenId);
- return [tokenAddress, tokenId];
+ const erc721ProxyData = {
+ assetProxyId,
+ tokenAddress,
+ tokenId,
+ };
+ return erc721ProxyData;
},
decodeProxyDataId(proxyData: string): AssetProxyId {
const encodedProxyMetadata = ethUtil.toBuffer(proxyData);
@@ -110,4 +119,26 @@ export const assetProxyUtils = {
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}`);
+ }
+ },
};
diff --git a/packages/contracts/src/utils/types.ts b/packages/contracts/src/utils/types.ts
index 518776214..ba1243672 100644
--- a/packages/contracts/src/utils/types.ts
+++ b/packages/contracts/src/utils/types.ts
@@ -180,3 +180,20 @@ export interface OrderInfo {
orderHash: string;
orderFilledAmount: BigNumber;
}
+
+export interface ERC20ProxyData {
+ assetProxyId: AssetProxyId;
+ tokenAddress: string;
+}
+
+export interface ERC721ProxyData {
+ assetProxyId: AssetProxyId;
+ tokenAddress: string;
+ tokenId: BigNumber;
+}
+
+export interface ProxyData {
+ assetProxyId: AssetProxyId;
+ tokenAddress?: string;
+ data?: any;
+}