diff options
Diffstat (limited to 'packages/contract-wrappers/src/utils')
-rw-r--r-- | packages/contract-wrappers/src/utils/calldata_optimization_utils.ts | 44 | ||||
-rw-r--r-- | packages/contract-wrappers/src/utils/constants.ts | 1 |
2 files changed, 45 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, + }; +}; diff --git a/packages/contract-wrappers/src/utils/constants.ts b/packages/contract-wrappers/src/utils/constants.ts index d436efefc..2df11538c 100644 --- a/packages/contract-wrappers/src/utils/constants.ts +++ b/packages/contract-wrappers/src/utils/constants.ts @@ -2,6 +2,7 @@ import { BigNumber } from '@0xproject/utils'; export const constants = { NULL_ADDRESS: '0x0000000000000000000000000000000000000000', + NULL_BYTES: '0x', TESTRPC_NETWORK_ID: 50, INVALID_JUMP_PATTERN: 'invalid JUMP at', REVERT: 'revert', |