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-rw-r--r--packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts30
1 files changed, 15 insertions, 15 deletions
diff --git a/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
index 60fe7f33a..468e58350 100644
--- a/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
@@ -14,6 +14,18 @@ import {ContractWrapper} from './contract_wrapper';
export class TokenRegistryWrapper extends ContractWrapper {
private _tokenRegistryContractIfExists?: TokenRegistryContract;
private _contractAddressIfExists?: string;
+ private static _createTokenFromMetadata(metadata: TokenMetadata): Token|undefined {
+ if (metadata[0] === constants.NULL_ADDRESS) {
+ return undefined;
+ }
+ const token = {
+ address: metadata[0],
+ name: metadata[1],
+ symbol: metadata[2],
+ decimals: metadata[3].toNumber(),
+ };
+ return token;
+ }
constructor(web3Wrapper: Web3Wrapper, contractAddressIfExists?: string) {
super(web3Wrapper);
this._contractAddressIfExists = contractAddressIfExists;
@@ -51,7 +63,7 @@ export class TokenRegistryWrapper extends ContractWrapper {
const tokenRegistryContract = await this._getTokenRegistryContractAsync();
const metadata = await tokenRegistryContract.getTokenMetaData.callAsync(address);
- const token = this._createTokenFromMetadata(metadata);
+ const token = TokenRegistryWrapper._createTokenFromMetadata(metadata);
return token;
}
public async getTokenAddressBySymbolIfExistsAsync(symbol: string): Promise<string|undefined> {
@@ -76,14 +88,14 @@ export class TokenRegistryWrapper extends ContractWrapper {
assert.isString('symbol', symbol);
const tokenRegistryContract = await this._getTokenRegistryContractAsync();
const metadata = await tokenRegistryContract.getTokenBySymbol.callAsync(symbol);
- const token = this._createTokenFromMetadata(metadata);
+ const token = TokenRegistryWrapper._createTokenFromMetadata(metadata);
return token;
}
public async getTokenByNameIfExistsAsync(name: string): Promise<Token|undefined> {
assert.isString('name', name);
const tokenRegistryContract = await this._getTokenRegistryContractAsync();
const metadata = await tokenRegistryContract.getTokenByName.callAsync(name);
- const token = this._createTokenFromMetadata(metadata);
+ const token = TokenRegistryWrapper._createTokenFromMetadata(metadata);
return token;
}
/**
@@ -103,18 +115,6 @@ export class TokenRegistryWrapper extends ContractWrapper {
return this._contractAddressIfExists;
}
}
- private _createTokenFromMetadata(metadata: TokenMetadata): Token|undefined {
- if (metadata[0] === constants.NULL_ADDRESS) {
- return undefined;
- }
- const token = {
- address: metadata[0],
- name: metadata[1],
- symbol: metadata[2],
- decimals: metadata[3].toNumber(),
- };
- return token;
- }
private _invalidateContractInstance(): void {
delete this._tokenRegistryContractIfExists;
}