Split 0x.js into contract-wrappers, order-watcher but keep 0x.js as a unifying library with the same interface

1 files changed, 0 insertions, 199 deletions

diff --git a/packages/0x.js/src/utils/order_validation_utils.ts b/packages/0x.js/src/utils/order_validation_utils.ts
deleted file mode 100644
index a13c3dc04..000000000
--- a/packages/0x.js/src/utils/order_validation_utils.ts
+++ /dev/null
@@ -1,199 +0,0 @@
-import { getOrderHashHex, OrderError } from '@0xproject/order-utils';
-import { Order, SignedOrder } from '@0xproject/types';
-import { BigNumber } from '@0xproject/utils';
-import * as _ from 'lodash';
-
-import { ZeroEx } from '../0x';
-import { ExchangeWrapper } from '../contract_wrappers/exchange_wrapper';
-import { ExchangeContractErrs, TradeSide, TransferType, ZeroExError } from '../types';
-import { constants } from '../utils/constants';
-import { utils } from '../utils/utils';
-
-import { ExchangeTransferSimulator } from './exchange_transfer_simulator';
-
-export class OrderValidationUtils {
-    private _exchangeWrapper: ExchangeWrapper;
-    public static validateCancelOrderThrowIfInvalid(
-        order: Order,
-        cancelTakerTokenAmount: BigNumber,
-        unavailableTakerTokenAmount: BigNumber,
-    ): void {
-        if (cancelTakerTokenAmount.eq(0)) {
-            throw new Error(ExchangeContractErrs.OrderCancelAmountZero);
-        }
-        if (order.takerTokenAmount.eq(unavailableTakerTokenAmount)) {
-            throw new Error(ExchangeContractErrs.OrderAlreadyCancelledOrFilled);
-        }
-        const currentUnixTimestampSec = utils.getCurrentUnixTimestampSec();
-        if (order.expirationUnixTimestampSec.lessThan(currentUnixTimestampSec)) {
-            throw new Error(ExchangeContractErrs.OrderCancelExpired);
-        }
-    }
-    public static async validateFillOrderBalancesAllowancesThrowIfInvalidAsync(
-        exchangeTradeEmulator: ExchangeTransferSimulator,
-        signedOrder: SignedOrder,
-        fillTakerTokenAmount: BigNumber,
-        senderAddress: string,
-        zrxTokenAddress: string,
-    ): Promise<void> {
-        const fillMakerTokenAmount = OrderValidationUtils._getPartialAmount(
-            fillTakerTokenAmount,
-            signedOrder.takerTokenAmount,
-            signedOrder.makerTokenAmount,
-        );
-        await exchangeTradeEmulator.transferFromAsync(
-            signedOrder.makerTokenAddress,
-            signedOrder.maker,
-            senderAddress,
-            fillMakerTokenAmount,
-            TradeSide.Maker,
-            TransferType.Trade,
-        );
-        await exchangeTradeEmulator.transferFromAsync(
-            signedOrder.takerTokenAddress,
-            senderAddress,
-            signedOrder.maker,
-            fillTakerTokenAmount,
-            TradeSide.Taker,
-            TransferType.Trade,
-        );
-        const makerFeeAmount = OrderValidationUtils._getPartialAmount(
-            fillTakerTokenAmount,
-            signedOrder.takerTokenAmount,
-            signedOrder.makerFee,
-        );
-        await exchangeTradeEmulator.transferFromAsync(
-            zrxTokenAddress,
-            signedOrder.maker,
-            signedOrder.feeRecipient,
-            makerFeeAmount,
-            TradeSide.Maker,
-            TransferType.Fee,
-        );
-        const takerFeeAmount = OrderValidationUtils._getPartialAmount(
-            fillTakerTokenAmount,
-            signedOrder.takerTokenAmount,
-            signedOrder.takerFee,
-        );
-        await exchangeTradeEmulator.transferFromAsync(
-            zrxTokenAddress,
-            senderAddress,
-            signedOrder.feeRecipient,
-            takerFeeAmount,
-            TradeSide.Taker,
-            TransferType.Fee,
-        );
-    }
-    private static _validateRemainingFillAmountNotZeroOrThrow(
-        takerTokenAmount: BigNumber,
-        unavailableTakerTokenAmount: BigNumber,
-    ) {
-        if (takerTokenAmount.eq(unavailableTakerTokenAmount)) {
-            throw new Error(ExchangeContractErrs.OrderRemainingFillAmountZero);
-        }
-    }
-    private static _validateOrderNotExpiredOrThrow(expirationUnixTimestampSec: BigNumber) {
-        const currentUnixTimestampSec = utils.getCurrentUnixTimestampSec();
-        if (expirationUnixTimestampSec.lessThan(currentUnixTimestampSec)) {
-            throw new Error(ExchangeContractErrs.OrderFillExpired);
-        }
-    }
-    private static _getPartialAmount(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-        const fillMakerTokenAmount = numerator
-            .mul(target)
-            .div(denominator)
-            .round(0);
-        return fillMakerTokenAmount;
-    }
-    constructor(exchangeWrapper: ExchangeWrapper) {
-        this._exchangeWrapper = exchangeWrapper;
-    }
-    public async validateOrderFillableOrThrowAsync(
-        exchangeTradeEmulator: ExchangeTransferSimulator,
-        signedOrder: SignedOrder,
-        zrxTokenAddress: string,
-        expectedFillTakerTokenAmount?: BigNumber,
-    ): Promise<void> {
-        const orderHash = getOrderHashHex(signedOrder);
-        const unavailableTakerTokenAmount = await this._exchangeWrapper.getUnavailableTakerAmountAsync(orderHash);
-        OrderValidationUtils._validateRemainingFillAmountNotZeroOrThrow(
-            signedOrder.takerTokenAmount,
-            unavailableTakerTokenAmount,
-        );
-        OrderValidationUtils._validateOrderNotExpiredOrThrow(signedOrder.expirationUnixTimestampSec);
-        let fillTakerTokenAmount = signedOrder.takerTokenAmount.minus(unavailableTakerTokenAmount);
-        if (!_.isUndefined(expectedFillTakerTokenAmount)) {
-            fillTakerTokenAmount = expectedFillTakerTokenAmount;
-        }
-        await OrderValidationUtils.validateFillOrderBalancesAllowancesThrowIfInvalidAsync(
-            exchangeTradeEmulator,
-            signedOrder,
-            fillTakerTokenAmount,
-            signedOrder.taker,
-            zrxTokenAddress,
-        );
-    }
-    public async validateFillOrderThrowIfInvalidAsync(
-        exchangeTradeEmulator: ExchangeTransferSimulator,
-        signedOrder: SignedOrder,
-        fillTakerTokenAmount: BigNumber,
-        takerAddress: string,
-        zrxTokenAddress: string,
-    ): Promise<BigNumber> {
-        if (fillTakerTokenAmount.eq(0)) {
-            throw new Error(ExchangeContractErrs.OrderFillAmountZero);
-        }
-        const orderHash = getOrderHashHex(signedOrder);
-        if (!ZeroEx.isValidSignature(orderHash, signedOrder.ecSignature, signedOrder.maker)) {
-            throw new Error(OrderError.InvalidSignature);
-        }
-        const unavailableTakerTokenAmount = await this._exchangeWrapper.getUnavailableTakerAmountAsync(orderHash);
-        OrderValidationUtils._validateRemainingFillAmountNotZeroOrThrow(
-            signedOrder.takerTokenAmount,
-            unavailableTakerTokenAmount,
-        );
-        if (signedOrder.taker !== constants.NULL_ADDRESS && signedOrder.taker !== takerAddress) {
-            throw new Error(ExchangeContractErrs.TransactionSenderIsNotFillOrderTaker);
-        }
-        OrderValidationUtils._validateOrderNotExpiredOrThrow(signedOrder.expirationUnixTimestampSec);
-        const remainingTakerTokenAmount = signedOrder.takerTokenAmount.minus(unavailableTakerTokenAmount);
-        const filledTakerTokenAmount = remainingTakerTokenAmount.lessThan(fillTakerTokenAmount)
-            ? remainingTakerTokenAmount
-            : fillTakerTokenAmount;
-        await OrderValidationUtils.validateFillOrderBalancesAllowancesThrowIfInvalidAsync(
-            exchangeTradeEmulator,
-            signedOrder,
-            filledTakerTokenAmount,
-            takerAddress,
-            zrxTokenAddress,
-        );
-
-        const wouldRoundingErrorOccur = await this._exchangeWrapper.isRoundingErrorAsync(
-            filledTakerTokenAmount,
-            signedOrder.takerTokenAmount,
-            signedOrder.makerTokenAmount,
-        );
-        if (wouldRoundingErrorOccur) {
-            throw new Error(ExchangeContractErrs.OrderFillRoundingError);
-        }
-        return filledTakerTokenAmount;
-    }
-    public async validateFillOrKillOrderThrowIfInvalidAsync(
-        exchangeTradeEmulator: ExchangeTransferSimulator,
-        signedOrder: SignedOrder,
-        fillTakerTokenAmount: BigNumber,
-        takerAddress: string,
-        zrxTokenAddress: string,
-    ): Promise<void> {
-        const filledTakerTokenAmount = await this.validateFillOrderThrowIfInvalidAsync(
-            exchangeTradeEmulator,
-            signedOrder,
-            fillTakerTokenAmount,
-            takerAddress,
-            zrxTokenAddress,
-        );
-        if (filledTakerTokenAmount !== fillTakerTokenAmount) {
-            throw new Error(ExchangeContractErrs.InsufficientRemainingFillAmount);
-        }
-    }
-}