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authorFabio Berger <me@fabioberger.com>2017-05-30 05:51:27 +0800
committerFabio Berger <me@fabioberger.com>2017-05-30 05:51:27 +0800
commit919585cd7972bae1667f67c9fa034251f27b14a8 (patch)
tree3562cb97333bcb42e62ef575fce321f3c1b416f8
parent6cb9bd4426bff5885f3b453d60a6a00f048abb6b (diff)
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Add TokenRegistryWrapper and getTokensAsync method
-rw-r--r--src/0x.js.ts3
-rw-r--r--src/contract_wrappers/token_registry_wrapper.ts33
-rw-r--r--src/types.ts13
3 files changed, 49 insertions, 0 deletions
diff --git a/src/0x.js.ts b/src/0x.js.ts
index d708a8db6..7e48bc0a5 100644
--- a/src/0x.js.ts
+++ b/src/0x.js.ts
@@ -11,6 +11,7 @@ import {assert} from './utils/assert';
import findVersions = require('find-versions');
import compareVersions = require('compare-versions');
import {ExchangeWrapper} from './contract_wrappers/exchange_wrapper';
+import {TokenRegistryWrapper} from './contract_wrappers/token_registry_wrapper';
import {ecSignatureSchema} from './schemas/ec_signature_schema';
import {SolidityTypes, ECSignature, ZeroExError} from './types';
@@ -19,6 +20,7 @@ const MAX_DIGITS_IN_UNSIGNED_256_INT = 78;
export class ZeroEx {
public web3Wrapper: Web3Wrapper;
public exchange: ExchangeWrapper;
+ public tokenRegistry: TokenRegistryWrapper;
/**
* Computes the orderHash given the order parameters and returns it as a hex encoded string.
*/
@@ -132,6 +134,7 @@ export class ZeroEx {
constructor(web3: Web3) {
this.web3Wrapper = new Web3Wrapper(web3);
this.exchange = new ExchangeWrapper(this.web3Wrapper);
+ this.tokenRegistry = new TokenRegistryWrapper(this.web3Wrapper);
}
/**
* Signs an orderHash and returns it's elliptic curve signature
diff --git a/src/contract_wrappers/token_registry_wrapper.ts b/src/contract_wrappers/token_registry_wrapper.ts
new file mode 100644
index 000000000..4d6eacb51
--- /dev/null
+++ b/src/contract_wrappers/token_registry_wrapper.ts
@@ -0,0 +1,33 @@
+import * as _ from 'lodash';
+import {Web3Wrapper} from '../web3_wrapper';
+import {ZeroExError, Token, TokenRegistryContract} from '../types';
+import {assert} from '../utils/assert';
+import {ContractWrapper} from './contract_wrapper';
+import * as TokenRegistryArtifacts from '../artifacts/TokenRegistry.json';
+
+export class TokenRegistryWrapper extends ContractWrapper {
+ constructor(web3Wrapper: Web3Wrapper) {
+ super(web3Wrapper);
+ }
+ public async getTokensAsync(): Promise<Token[]> {
+ const contractInstance = await this.instantiateContractIfExistsAsync((TokenRegistryArtifacts as any));
+ const tokenRegistryContract = contractInstance as TokenRegistryContract;
+
+ const addresses = await tokenRegistryContract.getTokenAddresses.call();
+ const tokenMetadataPromises: Array<Promise<any[]>> = _.map(
+ addresses,
+ (address: string) => (tokenRegistryContract.getTokenMetaData.call(address)),
+ );
+ const tokensMetadata = await Promise.all(tokenMetadataPromises);
+ const tokens = _.map(tokensMetadata, metadata => {
+ return {
+ address: metadata[0],
+ name: metadata[1],
+ symbol: metadata[2],
+ url: metadata[3],
+ decimals: metadata[4].toNumber(),
+ };
+ });
+ return tokens;
+ }
+}
diff --git a/src/types.ts b/src/types.ts
index 3bed01547..273389480 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -30,8 +30,21 @@ export interface ExchangeContract {
isValidSignature: any;
}
+export interface TokenRegistryContract {
+ getTokenMetaData: any;
+ getTokenAddresses: any;
+}
+
export const SolidityTypes = strEnum([
'address',
'uint256',
]);
export type SolidityTypes = keyof typeof SolidityTypes;
+
+export interface Token {
+ name: string;
+ address: string;
+ symbol: string;
+ decimals: number;
+ url: string;
+};