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authorLeonid Logvinov <logvinov.leon@gmail.com>2017-08-24 20:50:27 +0800
committerLeonid Logvinov <logvinov.leon@gmail.com>2017-08-25 04:48:51 +0800
commit9b66b168edd9c1dce90475ef7b5a65c572454bb7 (patch)
tree38af40957117069044a974f6541a9481ab4f7173
parent9e76b2dd98365adb96d89ddaea8133691b0f3cfc (diff)
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Add setUnlimitedProxyAllowanceAsync and setUnlimitedAllowanceAsync
-rw-r--r--src/contract_wrappers/token_wrapper.ts25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/contract_wrappers/token_wrapper.ts b/src/contract_wrappers/token_wrapper.ts
index 8c1bf6b52..a9abb4f09 100644
--- a/src/contract_wrappers/token_wrapper.ts
+++ b/src/contract_wrappers/token_wrapper.ts
@@ -29,6 +29,7 @@ const ALLOWANCE_TO_ZERO_GAS_AMOUNT = 45730;
* to the 0x Proxy smart contract.
*/
export class TokenWrapper extends ContractWrapper {
+ public UNLIMITED_ALLOWANCE_IN_BASE_UNITS = new BigNumber(2).pow(256).minus(1);
private _tokenContractsByAddress: {[address: string]: TokenContract};
private _tokenLogEventEmitters: ContractEventEmitter[];
constructor(web3Wrapper: Web3Wrapper) {
@@ -80,6 +81,20 @@ export class TokenWrapper extends ContractWrapper {
});
}
/**
+ * Sets the spender's allowance to an unlimited number of baseUnits on behalf of the owner address.
+ * Equivalent to the ERC20 spec method `approve`.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param ownerAddress The hex encoded user Ethereum address who would like to set an allowance
+ * for spenderAddress.
+ * @param spenderAddress The hex encoded user Ethereum address who will be able to spend the set allowance.
+ */
+ public async setUnlimitedAllowanceAsync(tokenAddress: string, ownerAddress: string,
+ spenderAddress: string): Promise<void> {
+ await this.setAllowanceAsync(
+ tokenAddress, ownerAddress, spenderAddress, this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS,
+ );
+ }
+ /**
* Retrieves the owners allowance in baseUnits set to the spender's address.
* @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
* @param ownerAddress The hex encoded user Ethereum address whose allowance to spenderAddress
@@ -127,6 +142,16 @@ export class TokenWrapper extends ContractWrapper {
await this.setAllowanceAsync(tokenAddress, ownerAddress, proxyAddress, amountInBaseUnits);
}
/**
+ * Sets the 0x proxy contract's allowance to a unlimited number of a tokens' baseUnits on behalf
+ * of an owner address.
+ * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
+ * @param ownerAddress The hex encoded user Ethereum address who is setting an allowance
+ * for the Proxy contract.
+ */
+ public async setUnlimitedProxyAllowanceAsync(tokenAddress: string, ownerAddress: string): Promise<void> {
+ await this.setProxyAllowanceAsync(tokenAddress, ownerAddress, this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS);
+ }
+ /**
* Transfers `amountInBaseUnits` ERC20 tokens from `fromAddress` to `toAddress`.
* @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed.
* @param fromAddress The hex encoded user Ethereum address that will send the funds.