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author | Fabio Berger <me@fabioberger.com> | 2018-08-15 05:21:47 +0800 |
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committer | Fabio Berger <me@fabioberger.com> | 2018-08-15 05:21:47 +0800 |
commit | 2f2582a0da3095d61a99ef09744dc0995677558e (patch) | |
tree | 54989565919038c42d495dafb7426d4148605e84 /packages/contract-wrappers/src/utils/calldata_optimization_utils.ts | |
parent | 8169155a6547fb0283cd0f5362aad3c0b173b00b (diff) | |
parent | fadd292ecf367e42154856509d0ea0c20b23f2f1 (diff) | |
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Merge development
Diffstat (limited to 'packages/contract-wrappers/src/utils/calldata_optimization_utils.ts')
-rw-r--r-- | packages/contract-wrappers/src/utils/calldata_optimization_utils.ts | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/packages/contract-wrappers/src/utils/calldata_optimization_utils.ts b/packages/contract-wrappers/src/utils/calldata_optimization_utils.ts new file mode 100644 index 000000000..3172cf531 --- /dev/null +++ b/packages/contract-wrappers/src/utils/calldata_optimization_utils.ts @@ -0,0 +1,44 @@ +import { SignedOrder } from '@0xproject/types'; +import * as _ from 'lodash'; + +import { constants } from './constants'; + +export const calldataOptimizationUtils = { + /** + * Takes an array of orders and outputs an array of equivalent orders where all takerAssetData are '0x' and + * all makerAssetData are '0x' except for that of the first order, which retains its original value + * @param orders An array of SignedOrder objects + * @returns optimized orders + */ + optimizeForwarderOrders(orders: SignedOrder[]): SignedOrder[] { + const optimizedOrders = _.map(orders, (order, index) => + transformOrder(order, { + makerAssetData: index === 0 ? order.makerAssetData : constants.NULL_BYTES, + takerAssetData: constants.NULL_BYTES, + }), + ); + return optimizedOrders; + }, + /** + * Takes an array of orders and outputs an array of equivalent orders where all takerAssetData are '0x' and + * all makerAssetData are '0x' + * @param orders An array of SignedOrder objects + * @returns optimized orders + */ + optimizeForwarderFeeOrders(orders: SignedOrder[]): SignedOrder[] { + const optimizedOrders = _.map(orders, (order, index) => + transformOrder(order, { + makerAssetData: constants.NULL_BYTES, + takerAssetData: constants.NULL_BYTES, + }), + ); + return optimizedOrders; + }, +}; + +const transformOrder = (order: SignedOrder, partialOrder: Partial<SignedOrder>) => { + return { + ...order, + ...partialOrder, + }; +}; |