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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 /src/contract_wrappers
parent6cb9bd4426bff5885f3b453d60a6a00f048abb6b (diff)
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Add TokenRegistryWrapper and getTokensAsync method
Diffstat (limited to 'src/contract_wrappers')
-rw-r--r--src/contract_wrappers/token_registry_wrapper.ts33
1 files changed, 33 insertions, 0 deletions
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;
+ }
+}