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authorLeonid Logvinov <logvinov.leon@gmail.com>2017-05-26 02:29:33 +0800
committerLeonid Logvinov <logvinov.leon@gmail.com>2017-05-26 02:29:33 +0800
commit183e8a71389737dc1c535b3625c949307607b9b9 (patch)
treec55fb4d000b0a36460199354bcbdafb000b4a6d5 /src/ts/0x.js.ts
parentf2f39d9eb2822b71aa7c5cf6f3b2ef006a83ad03 (diff)
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Diffstat (limited to 'src/ts/0x.js.ts')
-rw-r--r--src/ts/0x.js.ts57
1 files changed, 36 insertions, 21 deletions
diff --git a/src/ts/0x.js.ts b/src/ts/0x.js.ts
index 82dbce22d..893d95de6 100644
--- a/src/ts/0x.js.ts
+++ b/src/ts/0x.js.ts
@@ -20,41 +20,47 @@ export interface ECSignature {
const MAX_DIGITS_IN_UNSIGNED_256_INT = 78;
export class ZeroEx {
- public static getOrderHash(exchangeContractAddr: string, makerAddr: string, takerAddr: string,
- depositTokenAddr: string, receiveTokenAddr: string, feeRecipient: string,
- depositAmt: BigNumber.BigNumber, receiveAmt: BigNumber.BigNumber,
- makerFee: BigNumber.BigNumber, takerFee: BigNumber.BigNumber,
- expiration: BigNumber.BigNumber, salt: BigNumber.BigNumber): string {
- takerAddr = takerAddr !== '' ? takerAddr : constants.NULL_ADDRESS;
+ /**
+ * Computes the orderHash given the order parameters and returns it as a hex encoded string.
+ */
+ public static getOrderHashHex(exchangeContractAddr: string, makerAddr: string, takerAddr: string,
+ tokenMAddress: string, tokenTAddress: string, feeRecipient: string,
+ valueM: BigNumber.BigNumber, valueT: BigNumber.BigNumber,
+ makerFee: BigNumber.BigNumber, takerFee: BigNumber.BigNumber,
+ expiration: BigNumber.BigNumber, salt: BigNumber.BigNumber): string {
+ takerAddr = _.isEmpty(takerAddr) ? constants.NULL_ADDRESS : takerAddr ;
assert.isETHAddressHex('exchangeContractAddr', exchangeContractAddr);
assert.isETHAddressHex('makerAddr', makerAddr);
assert.isETHAddressHex('takerAddr', takerAddr);
- assert.isETHAddressHex('depositTokenAddr', depositTokenAddr);
- assert.isETHAddressHex('receiveTokenAddr', receiveTokenAddr);
+ assert.isETHAddressHex('tokenMAddress', tokenMAddress);
+ assert.isETHAddressHex('tokenTAddress', tokenTAddress);
assert.isETHAddressHex('feeRecipient', feeRecipient);
- assert.isBigNumber('depositAmt', depositAmt);
- assert.isBigNumber('receiveAmt', receiveAmt);
+ assert.isBigNumber('valueM', valueM);
+ assert.isBigNumber('valueT', valueT);
assert.isBigNumber('makerFee', makerFee);
assert.isBigNumber('takerFee', takerFee);
assert.isBigNumber('expiration', expiration);
assert.isBigNumber('salt', salt);
+
const orderParts = [
{value: exchangeContractAddr, type: SolidityTypes.address},
{value: makerAddr, type: SolidityTypes.address},
{value: takerAddr, type: SolidityTypes.address},
- {value: depositTokenAddr, type: SolidityTypes.address},
- {value: receiveTokenAddr, type: SolidityTypes.address},
+ {value: tokenMAddress, type: SolidityTypes.address},
+ {value: tokenTAddress, type: SolidityTypes.address},
{value: feeRecipient, type: SolidityTypes.address},
- {value: new BN(depositAmt.toString(), 10), type: SolidityTypes.uint256},
- {value: new BN(receiveAmt.toString(), 10), type: SolidityTypes.uint256},
- {value: new BN(makerFee.toString(), 10), type: SolidityTypes.uint256},
- {value: new BN(takerFee.toString(), 10), type: SolidityTypes.uint256},
- {value: new BN(expiration.toString(), 10), type: SolidityTypes.uint256},
- {value: new BN(salt.toString(), 10), type: SolidityTypes.uint256},
+ {value: this.bigNumberToBN(valueM), type: SolidityTypes.uint256},
+ {value: this.bigNumberToBN(valueT), type: SolidityTypes.uint256},
+ {value: this.bigNumberToBN(makerFee), type: SolidityTypes.uint256},
+ {value: this.bigNumberToBN(takerFee), type: SolidityTypes.uint256},
+ {value: this.bigNumberToBN(expiration), type: SolidityTypes.uint256},
+ {value: this.bigNumberToBN(salt), type: SolidityTypes.uint256},
];
- const hashBuff = ethABI.soliditySHA3(_.map(orderParts, 'type'), _.map(orderParts, 'value'));
- const buffHashHex = ethUtil.bufferToHex(hashBuff);
- return buffHashHex;
+ const types = _.map(orderParts, o => o.type);
+ const values = _.map(orderParts, o => o.value);
+ const hashBuff = ethABI.soliditySHA3(types, values);
+ const hashHex = ethUtil.bufferToHex(hashBuff);
+ return hashHex;
}
/**
* Verifies that the elliptic curve signature `signature` was generated
@@ -123,4 +129,13 @@ export class ZeroEx {
const baseUnitAmount = amount.times(unit);
return baseUnitAmount;
}
+
+ /**
+ * Converts BigNumber instance to BN
+ * We do it because ethABI accepts only BN's
+ * We should be consistent about using BigNumbers in our codebase and not use BN anywhere else
+ */
+ private static bigNumberToBN(value: BigNumber.BigNumber) {
+ return new BN(value.toString(), 10);
+ }
}