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authorLeonid Logvinov <logvinov.leon@gmail.com>2018-02-24 03:35:44 +0800
committerLeonid Logvinov <logvinov.leon@gmail.com>2018-02-28 04:05:23 +0800
commit2d561bc8a05e8d1fca91cde93bae2080d87be926 (patch)
tree10d785eff73c67ecae09a337ed3721ff6b6102a9 /packages
parentf5275d3ad75d2a989556de99cdef82bcf2cd687c (diff)
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Allow users to specify the contracts backend in abi-gen
Diffstat (limited to 'packages')
-rw-r--r--packages/0x.js/contract_templates/contract.handlebars10
-rw-r--r--packages/0x.js/contract_templates/partials/call.handlebars20
-rw-r--r--packages/0x.js/contract_templates/partials/tx.handlebars36
-rw-r--r--packages/0x.js/package.json3
-rw-r--r--packages/0x.js/src/contract_wrappers/contract_wrapper.ts8
-rw-r--r--packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts4
-rw-r--r--packages/0x.js/src/contract_wrappers/exchange_wrapper.ts6
-rw-r--r--packages/0x.js/src/contract_wrappers/generated/base_contract.ts53
-rw-r--r--packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts12
-rw-r--r--packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts7
-rw-r--r--packages/0x.js/src/contract_wrappers/token_wrapper.ts4
-rw-r--r--packages/0x.js/src/globals.d.ts28
-rw-r--r--packages/0x.js/src/types.ts2
-rw-r--r--packages/0x.js/test/utils/fill_scenarios.ts6
-rw-r--r--packages/abi-gen/CHANGELOG.md4
-rw-r--r--packages/abi-gen/src/index.ts13
-rw-r--r--packages/abi-gen/src/types.ts5
-rw-r--r--packages/abi-gen/src/utils.ts18
18 files changed, 169 insertions, 70 deletions
diff --git a/packages/0x.js/contract_templates/contract.handlebars b/packages/0x.js/contract_templates/contract.handlebars
index 33699b8a7..2954145a7 100644
--- a/packages/0x.js/contract_templates/contract.handlebars
+++ b/packages/0x.js/contract_templates/contract.handlebars
@@ -6,6 +6,9 @@
// tslint:disable-next-line:no-unused-variable
import { TxData, TxDataPayable } from '@0xproject/types';
import { BigNumber, classUtils, promisify } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as ethersContracts from 'ethers-contracts';
+import * as _ from 'lodash';
import * as Web3 from 'web3';
import {BaseContract} from './base_contract';
@@ -28,6 +31,7 @@ export enum {{contractName}}Events {
{{/each}}
{{/if}}
+// tslint:disable:no-parameter-reassignment
export class {{contractName}}Contract extends BaseContract {
{{#each methods}}
{{#this.constant}}
@@ -37,8 +41,8 @@ export class {{contractName}}Contract extends BaseContract {
{{> tx contractName=../contractName}}
{{/this.constant}}
{{/each}}
- constructor(web3ContractInstance: Web3.ContractInstance, defaults: Partial<TxData>) {
- super(web3ContractInstance, defaults);
- classUtils.bindAll(this, ['_web3ContractInstance', '_defaults']);
+ constructor(web3Wrapper: Web3Wrapper, abi: Web3.ContractAbi, address: string) {
+ super(web3Wrapper, abi, address);
+ classUtils.bindAll(this, ['_ethersInterface', '_address', '_abi', '_web3Wrapper']);
}
} // tslint:disable:max-file-line-count
diff --git a/packages/0x.js/contract_templates/partials/call.handlebars b/packages/0x.js/contract_templates/partials/call.handlebars
index 0475136f0..c533712b7 100644
--- a/packages/0x.js/contract_templates/partials/call.handlebars
+++ b/packages/0x.js/contract_templates/partials/call.handlebars
@@ -4,12 +4,20 @@ public {{this.name}} = {
defaultBlock?: Web3.BlockParam,
): Promise<{{> return_type outputs=outputs}}> {
const self = this as {{contractName}}Contract;
- const result = await promisify<{{> return_type outputs=outputs}}>(
- self._web3ContractInstance.{{this.name}}.call,
- self._web3ContractInstance,
- )(
+ const inputAbi = _.find(this._abi, {name: '{{this.name}}'}).inputs;
+ [{{> params inputs=inputs}}] = BaseContract._transformABIData(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(this));
+ const callDescription = self._ethersInterface.functions.{{this.name}}(
{{> params inputs=inputs}}
- );
- return result;
+ ) as ethersContracts.CallDescription;
+ const callData = await self._applyDefaultsToTxDataAsync(
+ {
+ data: callDescription.data,
+ }
+ )
+ const rawCallResult = await self._web3Wrapper.callAsync(callData);
+ let resultArray = callDescription.parse(rawCallResult);
+ const outputAbi = _.find(this._abi, {name: '{{this.name}}'}).outputs;
+ resultArray = BaseContract._transformABIData(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
+ return resultArray{{#singleReturnValue}}[0]{{/singleReturnValue}};
},
};
diff --git a/packages/0x.js/contract_templates/partials/tx.handlebars b/packages/0x.js/contract_templates/partials/tx.handlebars
index 9df83266a..aae9aa404 100644
--- a/packages/0x.js/contract_templates/partials/tx.handlebars
+++ b/packages/0x.js/contract_templates/partials/tx.handlebars
@@ -9,19 +9,22 @@ public {{this.name}} = {
{{/this.payable}}
): Promise<string> {
const self = this as {{contractName}}Contract;
+ const inputAbi = _.find(this._abi, {name: '{{this.name}}'}).inputs;
+ [{{> params inputs=inputs}}] = BaseContract._transformABIData(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(this));
+ const data = this._ethersInterface.functions.{{this.name}}(
+ {{> params inputs=inputs}}
+ ).data
const txDataWithDefaults = await self._applyDefaultsToTxDataAsync(
- txData,
+ {
+ ...txData,
+ data,
+ },
self.{{this.name}}.estimateGasAsync.bind(
self,
{{> params inputs=inputs}}
),
);
- const txHash = await promisify<string>(
- self._web3ContractInstance.{{this.name}}, self._web3ContractInstance,
- )(
- {{> params inputs=inputs}}
- txDataWithDefaults,
- );
+ const txHash = await this._web3Wrapper.sendTransactionAsync(txDataWithDefaults);
return txHash;
},
async estimateGasAsync(
@@ -29,15 +32,16 @@ public {{this.name}} = {
txData: TxData = {},
): Promise<number> {
const self = this as {{contractName}}Contract;
- const txDataWithDefaults = await self._applyDefaultsToTxDataAsync(
- txData,
- );
- const gas = await promisify<number>(
- self._web3ContractInstance.{{this.name}}.estimateGas, self._web3ContractInstance,
- )(
+ const data = this._ethersInterface.functions.{{this.name}}(
{{> params inputs=inputs}}
- txDataWithDefaults,
+ ).data
+ const txDataWithDefaults = await self._applyDefaultsToTxDataAsync(
+ {
+ ...txData,
+ data,
+ }
);
+ const gas = await this._web3Wrapper.estimateGasAsync(txDataWithDefaults);
return gas;
},
getABIEncodedTransactionData(
@@ -45,7 +49,9 @@ public {{this.name}} = {
txData: TxData = {},
): string {
const self = this as {{contractName}}Contract;
- const abiEncodedTransactionData = self._web3ContractInstance.{{this.name}}.getData();
+ const abiEncodedTransactionData = this._ethersInterface.functions.{{this.name}}(
+ {{> params inputs=inputs}}
+ ).data
return abiEncodedTransactionData;
},
};
diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index 4fb0eb6ac..6a0a84cfc 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -17,7 +17,7 @@
"build": "run-p build:umd:prod build:commonjs; exit 0;",
"docs:json": "typedoc --excludePrivate --excludeExternals --target ES5 --json $JSON_FILE_PATH $PROJECT_DIR",
"upload_docs_json": "aws s3 cp generated_docs/index.json $S3_URL --profile 0xproject --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers --content-type application/json",
- "generate_contract_wrappers": "node ../abi-gen/lib/index.js --abis 'src/artifacts/@(Exchange|Token|TokenTransferProxy|EtherToken|TokenRegistry|DummyToken).json' --template contract_templates/contract.handlebars --partials 'contract_templates/partials/**/*.handlebars' --output src/contract_wrappers/generated",
+ "generate_contract_wrappers": "node ../abi-gen/lib/index.js --abis 'src/artifacts/@(Exchange|Token|TokenTransferProxy|EtherToken|TokenRegistry|DummyToken).json' --template contract_templates/contract.handlebars --partials 'contract_templates/partials/**/*.handlebars' --output src/contract_wrappers/generated && prettier --write 'src/contract_wrappers/generated/**.ts'",
"lint": "tslint --project . 'src/**/*.ts' 'test/**/*.ts'",
"test:circleci": "run-s test:coverage report_test_coverage",
"test": "run-s clean test:commonjs",
@@ -91,6 +91,7 @@
"ethereumjs-abi": "^0.6.4",
"ethereumjs-blockstream": "^2.0.6",
"ethereumjs-util": "^5.1.1",
+ "ethers-contracts": "^2.2.1",
"js-sha3": "^0.7.0",
"lodash": "^4.17.4",
"uuid": "^3.1.0",
diff --git a/packages/0x.js/src/contract_wrappers/contract_wrapper.ts b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
index b313273b5..ad7727de5 100644
--- a/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
@@ -108,10 +108,10 @@ export class ContractWrapper {
const logWithDecodedArgs = this._abiDecoder.tryToDecodeLogOrNoop(log);
return logWithDecodedArgs;
}
- protected async _instantiateContractIfExistsAsync(
+ protected async _getContractAbiAndAddressFromArtifactsAsync(
artifact: Artifact,
addressIfExists?: string,
- ): Promise<Web3.ContractInstance> {
+ ): Promise<[Web3.ContractAbi, string]> {
let contractAddress: string;
if (_.isUndefined(addressIfExists)) {
if (_.isUndefined(artifact.networks[this._networkId])) {
@@ -125,8 +125,8 @@ export class ContractWrapper {
if (!doesContractExist) {
throw new Error(CONTRACT_NAME_TO_NOT_FOUND_ERROR[artifact.contract_name]);
}
- const contractInstance = this._web3Wrapper.getContractInstance(artifact.abi, contractAddress);
- return contractInstance;
+ const abiAndAddress: [Web3.ContractAbi, string] = [artifact.abi, contractAddress];
+ return abiAndAddress;
}
protected _getContractAddress(artifact: Artifact, addressIfExists?: string): string {
if (_.isUndefined(addressIfExists)) {
diff --git a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
index 4807eff33..42f8213a2 100644
--- a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
@@ -187,11 +187,11 @@ export class EtherTokenWrapper extends ContractWrapper {
if (!_.isUndefined(etherTokenContract)) {
return etherTokenContract;
}
- const web3ContractInstance = await this._instantiateContractIfExistsAsync(
+ const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync(
artifacts.EtherTokenArtifact,
etherTokenAddress,
);
- const contractInstance = new EtherTokenContract(web3ContractInstance, this._web3Wrapper.getContractDefaults());
+ const contractInstance = new EtherTokenContract(this._web3Wrapper, abi, address);
etherTokenContract = contractInstance;
this._etherTokenContractsByAddress[etherTokenAddress] = etherTokenContract;
return etherTokenContract;
diff --git a/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
index 6bafc84c1..e0f6bd539 100644
--- a/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
@@ -858,7 +858,7 @@ export class ExchangeWrapper extends ContractWrapper {
});
if (!_.isUndefined(errLog)) {
const logArgs = (errLog as LogWithDecodedArgs<LogErrorContractEventArgs>).args;
- const errCode = logArgs.errorId.toNumber();
+ const errCode = logArgs.errorId;
const errMessage = this._exchangeContractErrCodesToMsg[errCode];
throw new Error(errMessage);
}
@@ -906,11 +906,11 @@ export class ExchangeWrapper extends ContractWrapper {
if (!_.isUndefined(this._exchangeContractIfExists)) {
return this._exchangeContractIfExists;
}
- const web3ContractInstance = await this._instantiateContractIfExistsAsync(
+ const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync(
artifacts.ExchangeArtifact,
this._contractAddressIfExists,
);
- const contractInstance = new ExchangeContract(web3ContractInstance, this._web3Wrapper.getContractDefaults());
+ const contractInstance = new ExchangeContract(this._web3Wrapper, abi, address);
this._exchangeContractIfExists = contractInstance;
return this._exchangeContractIfExists;
}
diff --git a/packages/0x.js/src/contract_wrappers/generated/base_contract.ts b/packages/0x.js/src/contract_wrappers/generated/base_contract.ts
index d8fac7eea..a62c785bc 100644
--- a/packages/0x.js/src/contract_wrappers/generated/base_contract.ts
+++ b/packages/0x.js/src/contract_wrappers/generated/base_contract.ts
@@ -1,11 +1,45 @@
-import {TxData, TxDataPayable} from '@0xproject/types';
+import { TxData, TxDataPayable } from '@0xproject/types';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as ethersContracts from 'ethers-contracts';
import * as _ from 'lodash';
import * as Web3 from 'web3';
export class BaseContract {
- protected _web3ContractInstance: Web3.ContractInstance;
- protected _defaults: Partial<TxData>;
- protected async _applyDefaultsToTxDataAsync<T extends TxData|TxDataPayable>(
+ protected _ethersInterface: ethersContracts.Interface;
+ protected _web3Wrapper: Web3Wrapper;
+ protected _abi: Web3.ContractAbi;
+ protected _address: string;
+ protected static _transformABIData(
+ abis: Web3.DataItem[],
+ values: any[],
+ transformation: (type: string, value: any) => any,
+ ): any {
+ return _.map(values, (value: any, i: number) =>
+ BaseContract._transformTypedData(abis[i].type, value, transformation),
+ );
+ }
+ protected static _lowercaseAddress(type: string, value: string): string {
+ return type === 'address' ? value.toLowerCase() : value;
+ }
+ protected static _bigNumberToString(type: string, value: string): string {
+ return _.isObject(value) && (value as any).isBigNumber ? value.toString() : value;
+ }
+ private static _transformTypedData(
+ type: string,
+ values: any,
+ transformation: (type: string, value: any) => any,
+ ): any {
+ const trailingArrayRegex = /\[\d*\]$/;
+ if (type.match(trailingArrayRegex)) {
+ const arrayItemType = type.replace(trailingArrayRegex, '');
+ return _.map(values, (value: any, i: number) =>
+ this._transformTypedData(arrayItemType, value, transformation),
+ );
+ } else {
+ return transformation(type, values);
+ }
+ }
+ protected async _applyDefaultsToTxDataAsync<T extends Partial<TxData | TxDataPayable>>(
txData: T,
estimateGasAsync?: (txData: T) => Promise<number>,
): Promise<TxData> {
@@ -15,7 +49,8 @@ export class BaseContract {
// 3. Gas estimate calculation + safety margin
const removeUndefinedProperties = _.pickBy;
const txDataWithDefaults = {
- ...removeUndefinedProperties(this._defaults),
+ to: this._address,
+ ...removeUndefinedProperties(this._web3Wrapper.getContractDefaults()),
...removeUndefinedProperties(txData as any),
// HACK: TS can't prove that T is spreadable.
// Awaiting https://github.com/Microsoft/TypeScript/pull/13288 to be merged
@@ -26,8 +61,10 @@ export class BaseContract {
}
return txDataWithDefaults;
}
- constructor(web3ContractInstance: Web3.ContractInstance, defaults: Partial<TxData>) {
- this._web3ContractInstance = web3ContractInstance;
- this._defaults = defaults;
+ constructor(web3Wrapper: Web3Wrapper, abi: Web3.ContractAbi, address: string) {
+ this._web3Wrapper = web3Wrapper;
+ this._abi = abi;
+ this._address = address;
+ this._ethersInterface = new ethersContracts.Interface(abi);
}
}
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 f0ae5f33c..e1806c6f2 100644
--- a/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
@@ -23,7 +23,7 @@ export class TokenRegistryWrapper extends ContractWrapper {
address: metadata[0],
name: metadata[1],
symbol: metadata[2],
- decimals: metadata[3].toNumber(),
+ decimals: metadata[3],
};
return token;
}
@@ -50,7 +50,8 @@ export class TokenRegistryWrapper extends ContractWrapper {
public async getTokenAddressesAsync(): Promise<string[]> {
const tokenRegistryContract = await this._getTokenRegistryContractAsync();
const addresses = await tokenRegistryContract.getTokenAddresses.callAsync();
- return addresses;
+ const lowerCaseAddresses = _.map(addresses, address => address.toLowerCase());
+ return lowerCaseAddresses;
}
/**
* Retrieves a token by address currently listed in the Token Registry smart contract
@@ -116,14 +117,11 @@ export class TokenRegistryWrapper extends ContractWrapper {
if (!_.isUndefined(this._tokenRegistryContractIfExists)) {
return this._tokenRegistryContractIfExists;
}
- const web3ContractInstance = await this._instantiateContractIfExistsAsync(
+ const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync(
artifacts.TokenRegistryArtifact,
this._contractAddressIfExists,
);
- const contractInstance = new TokenRegistryContract(
- web3ContractInstance,
- this._web3Wrapper.getContractDefaults(),
- );
+ const contractInstance = new TokenRegistryContract(this._web3Wrapper, abi, address);
this._tokenRegistryContractIfExists = contractInstance;
return this._tokenRegistryContractIfExists;
}
diff --git a/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
index f0cbf364d..211c7dfb4 100644
--- a/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
@@ -59,14 +59,11 @@ export class TokenTransferProxyWrapper extends ContractWrapper {
if (!_.isUndefined(this._tokenTransferProxyContractIfExists)) {
return this._tokenTransferProxyContractIfExists;
}
- const web3ContractInstance = await this._instantiateContractIfExistsAsync(
+ const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync(
artifacts.TokenTransferProxyArtifact,
this._contractAddressIfExists,
);
- const contractInstance = new TokenTransferProxyContract(
- web3ContractInstance,
- this._web3Wrapper.getContractDefaults(),
- );
+ const contractInstance = new TokenTransferProxyContract(this._web3Wrapper, abi, address);
this._tokenTransferProxyContractIfExists = contractInstance;
return this._tokenTransferProxyContractIfExists;
}
diff --git a/packages/0x.js/src/contract_wrappers/token_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
index 11a7670c0..0ec9ad707 100644
--- a/packages/0x.js/src/contract_wrappers/token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
@@ -419,11 +419,11 @@ export class TokenWrapper extends ContractWrapper {
if (!_.isUndefined(tokenContract)) {
return tokenContract;
}
- const web3ContractInstance = await this._instantiateContractIfExistsAsync(
+ const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync(
artifacts.TokenArtifact,
normalizedTokenAddress,
);
- const contractInstance = new TokenContract(web3ContractInstance, this._web3Wrapper.getContractDefaults());
+ const contractInstance = new TokenContract(this._web3Wrapper, abi, address);
tokenContract = contractInstance;
this._tokenContractsByAddress[normalizedTokenAddress] = tokenContract;
return tokenContract;
diff --git a/packages/0x.js/src/globals.d.ts b/packages/0x.js/src/globals.d.ts
index 0e103d057..702f35149 100644
--- a/packages/0x.js/src/globals.d.ts
+++ b/packages/0x.js/src/globals.d.ts
@@ -41,3 +41,31 @@ declare module 'truffle-hdwallet-provider' {
}
export = HDWalletProvider;
}
+
+declare module 'ethers-contracts' {
+ export interface TransactionDescription {
+ name: string;
+ signature: string;
+ sighash: string;
+ data: string;
+ }
+ export interface CallDescription extends TransactionDescription {
+ parse: (...args: any[]) => any;
+ }
+ export interface FunctionDescription {
+ (...params: any[]): TransactionDescription | CallDescription;
+ inputs: { names: string[]; types: string[] };
+ outputs: { names: string[]; types: string[] };
+ }
+ export interface EventDescription {
+ inputs: { names: string[]; types: string[] };
+ signature: string;
+ topic: string;
+ }
+ // tslint:disable-next-line:max-classes-per-file
+ export class Interface {
+ public functions: { [functionName: string]: FunctionDescription };
+ public events: { [eventName: string]: EventDescription };
+ constructor(abi: any);
+ }
+}
diff --git a/packages/0x.js/src/types.ts b/packages/0x.js/src/types.ts
index 0a3037258..2f17e30c2 100644
--- a/packages/0x.js/src/types.ts
+++ b/packages/0x.js/src/types.ts
@@ -127,7 +127,7 @@ export interface SignedOrder extends Order {
}
// [address, name, symbol, decimals, ipfsHash, swarmHash]
-export type TokenMetadata = [string, string, string, BigNumber, string, string];
+export type TokenMetadata = [string, string, string, number, string, string];
export interface Token {
name: string;
diff --git a/packages/0x.js/test/utils/fill_scenarios.ts b/packages/0x.js/test/utils/fill_scenarios.ts
index 1a61487f4..8b1308298 100644
--- a/packages/0x.js/test/utils/fill_scenarios.ts
+++ b/packages/0x.js/test/utils/fill_scenarios.ts
@@ -35,12 +35,8 @@ export class FillScenarios {
const web3Wrapper = (this._zeroEx as any)._web3Wrapper as Web3Wrapper;
for (const token of this._tokens) {
if (token.symbol !== 'ZRX' && token.symbol !== 'WETH') {
- const contractInstance = web3Wrapper.getContractInstance(
- artifacts.DummyTokenArtifact.abi,
- token.address,
- );
const defaults = {};
- const dummyToken = new DummyTokenContract(contractInstance, defaults);
+ const dummyToken = new DummyTokenContract(web3Wrapper, artifacts.DummyTokenArtifact.abi, token.address);
const tokenSupply = ZeroEx.toBaseUnitAmount(INITIAL_COINBASE_TOKEN_SUPPLY_IN_UNITS, token.decimals);
const txHash = await dummyToken.setBalance.sendTransactionAsync(this._coinbase, tokenSupply, {
from: this._coinbase,
diff --git a/packages/abi-gen/CHANGELOG.md b/packages/abi-gen/CHANGELOG.md
index c86d6fb55..7e589551e 100644
--- a/packages/abi-gen/CHANGELOG.md
+++ b/packages/abi-gen/CHANGELOG.md
@@ -1,5 +1,9 @@
# CHANGELOG
+## v0.2.3 - _TBD, 2018_
+
+ * Add a `backend` parameter that allows you to specify your backend (web3 or ethers). Ethers auto-converts small ints to numbers (#TBD)
+
## v0.2.1 - _February 9, 2018_
* Fix publishing issue where .npmignore was not properly excluding undesired content (#389)
diff --git a/packages/abi-gen/src/index.ts b/packages/abi-gen/src/index.ts
index bc5a974a9..d34d74cdf 100644
--- a/packages/abi-gen/src/index.ts
+++ b/packages/abi-gen/src/index.ts
@@ -11,13 +11,14 @@ import * as yargs from 'yargs';
import toSnakeCase = require('to-snake-case');
import * as Web3 from 'web3';
-import { ContextData, ParamKind } from './types';
+import { ContextData, ContractsBackend, ParamKind } from './types';
import { utils } from './utils';
const ABI_TYPE_CONSTRUCTOR = 'constructor';
const ABI_TYPE_METHOD = 'function';
const ABI_TYPE_EVENT = 'event';
const DEFAULT_NETWORK_ID = 50;
+const DEFAULT_BACKEND = 'web3';
const args = yargs
.option('abis', {
@@ -43,6 +44,12 @@ const args = yargs
demandOption: true,
normalize: true,
})
+ .option('backend', {
+ describe: 'Which backend do you plan to use. Either web3 or ethers',
+ type: 'string',
+ choices: [ContractsBackend.Web3, ContractsBackend.Ethers],
+ default: DEFAULT_BACKEND,
+ })
.option('network-id', {
describe: 'ID of the network where contract ABIs are nested in artifacts',
type: 'number',
@@ -73,8 +80,8 @@ function writeOutputFile(name: string, renderedTsCode: string): void {
utils.log(`Created: ${chalk.bold(filePath)}`);
}
-Handlebars.registerHelper('parameterType', utils.solTypeToTsType.bind(utils, ParamKind.Input));
-Handlebars.registerHelper('returnType', utils.solTypeToTsType.bind(utils, ParamKind.Output));
+Handlebars.registerHelper('parameterType', utils.solTypeToTsType.bind(utils, ParamKind.Input, args.backend));
+Handlebars.registerHelper('returnType', utils.solTypeToTsType.bind(utils, ParamKind.Output, args.backend));
if (args.partials) {
registerPartials(args.partials);
diff --git a/packages/abi-gen/src/types.ts b/packages/abi-gen/src/types.ts
index e82ab824b..402e0105e 100644
--- a/packages/abi-gen/src/types.ts
+++ b/packages/abi-gen/src/types.ts
@@ -12,6 +12,11 @@ export enum AbiType {
Fallback = 'fallback',
}
+export enum ContractsBackend {
+ Web3 = 'web3',
+ Ethers = 'ethers',
+}
+
export interface Method extends Web3.MethodAbi {
singleReturnValue: boolean;
}
diff --git a/packages/abi-gen/src/utils.ts b/packages/abi-gen/src/utils.ts
index 14255643a..dc2c5390e 100644
--- a/packages/abi-gen/src/utils.ts
+++ b/packages/abi-gen/src/utils.ts
@@ -3,14 +3,14 @@ import * as _ from 'lodash';
import * as path from 'path';
import * as Web3 from 'web3';
-import { AbiType, ParamKind } from './types';
+import { AbiType, ContractsBackend, ParamKind } from './types';
export const utils = {
- solTypeToTsType(paramKind: ParamKind, solType: string): string {
+ solTypeToTsType(paramKind: ParamKind, backend: ContractsBackend, solType: string): string {
const trailingArrayRegex = /\[\d*\]$/;
if (solType.match(trailingArrayRegex)) {
const arrayItemSolType = solType.replace(trailingArrayRegex, '');
- const arrayItemTsType = utils.solTypeToTsType(paramKind, arrayItemSolType);
+ const arrayItemTsType = utils.solTypeToTsType(paramKind, backend, arrayItemSolType);
const arrayTsType = utils.isUnionType(arrayItemTsType)
? `Array<${arrayItemTsType}>`
: `${arrayItemTsType}[]`;
@@ -24,13 +24,21 @@ export const utils = {
{ regex: '^bytes\\d*$', tsType: 'string' },
];
if (paramKind === ParamKind.Input) {
- // web3 allows to pass those an non-bignumbers and that's nice
- // but it always returns stuff as BigNumbers
+ // web3 and ethers allow to pass those as numbers instead of bignumbers
solTypeRegexToTsType.unshift({
regex: '^u?int(8|16|32)?$',
tsType: 'number|BigNumber',
});
}
+ if (backend === ContractsBackend.Ethers) {
+ if (paramKind === ParamKind.Output) {
+ // ethers-contracts automatically converts small BigNumbers to numbers
+ solTypeRegexToTsType.unshift({
+ regex: '^u?int(8|16|32|48)?$',
+ tsType: 'number',
+ });
+ }
+ }
for (const regexAndTxType of solTypeRegexToTsType) {
const { regex, tsType } = regexAndTxType;
if (solType.match(regex)) {