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-rw-r--r--packages/abi-gen/src/index.ts14
-rw-r--r--packages/abi-gen/src/types.ts6
-rw-r--r--packages/abi-gen/src/utils.ts46
3 files changed, 55 insertions, 11 deletions
diff --git a/packages/abi-gen/src/index.ts b/packages/abi-gen/src/index.ts
index bc5a974a9..7c29f7d1d 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: `The backing Ethereum library your app uses. Either 'web3' or 'ethers'. Ethers auto-converts small ints to numbers whereas Web3 doesn't.`,
+ 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);
@@ -129,6 +136,7 @@ for (const abiFileName of abiFileNames) {
const methodData = {
...methodAbi,
singleReturnValue: methodAbi.outputs.length === 1,
+ hasReturnValue: methodAbi.outputs.length !== 0,
};
return methodData;
});
diff --git a/packages/abi-gen/src/types.ts b/packages/abi-gen/src/types.ts
index e82ab824b..deddb1857 100644
--- a/packages/abi-gen/src/types.ts
+++ b/packages/abi-gen/src/types.ts
@@ -12,8 +12,14 @@ export enum AbiType {
Fallback = 'fallback',
}
+export enum ContractsBackend {
+ Web3 = 'web3',
+ Ethers = 'ethers',
+}
+
export interface Method extends Web3.MethodAbi {
singleReturnValue: boolean;
+ hasReturnValue: boolean;
}
export interface ContextData {
diff --git a/packages/abi-gen/src/utils.ts b/packages/abi-gen/src/utils.ts
index 14255643a..3e4ff619a 100644
--- a/packages/abi-gen/src/utils.ts
+++ b/packages/abi-gen/src/utils.ts
@@ -3,17 +3,23 @@ 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,
+ components?: Web3.DataItem[],
+ ): string {
const trailingArrayRegex = /\[\d*\]$/;
if (solType.match(trailingArrayRegex)) {
const arrayItemSolType = solType.replace(trailingArrayRegex, '');
- const arrayItemTsType = utils.solTypeToTsType(paramKind, arrayItemSolType);
- const arrayTsType = utils.isUnionType(arrayItemTsType)
- ? `Array<${arrayItemTsType}>`
- : `${arrayItemTsType}[]`;
+ const arrayItemTsType = utils.solTypeToTsType(paramKind, backend, arrayItemSolType, components);
+ const arrayTsType =
+ utils.isUnionType(arrayItemTsType) || utils.isObjectType(arrayItemTsType)
+ ? `Array<${arrayItemTsType}>`
+ : `${arrayItemTsType}[]`;
return arrayTsType;
} else {
const solTypeRegexToTsType = [
@@ -24,25 +30,49 @@ export const utils = {
{ regex: '^bytes\\d*$', 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)?$',
tsType: 'number|BigNumber',
});
}
+ if (backend === ContractsBackend.Ethers && paramKind === ParamKind.Output) {
+ // ethers-contracts automatically converts small BigNumbers to numbers
+ solTypeRegexToTsType.unshift({
+ regex: '^u?int(8|16|32|48)?$',
+ tsType: 'number',
+ });
+ }
for (const regexAndTxType of solTypeRegexToTsType) {
const { regex, tsType } = regexAndTxType;
if (solType.match(regex)) {
return tsType;
}
}
+ const TUPLE_TYPE_REGEX = '^tuple$';
+ if (solType.match(TUPLE_TYPE_REGEX)) {
+ const componentsType = _.map(components, component => {
+ const componentValueType = utils.solTypeToTsType(
+ paramKind,
+ backend,
+ component.type,
+ component.components,
+ );
+ const componentType = `${component.name}: ${componentValueType}`;
+ return componentType;
+ });
+ const tsType = `{${componentsType}}`;
+ return tsType;
+ }
throw new Error(`Unknown Solidity type found: ${solType}`);
}
},
isUnionType(tsType: string): boolean {
return tsType === 'number|BigNumber';
},
+ isObjectType(tsType: string): boolean {
+ return /^{.*}$/.test(tsType);
+ },
log(...args: any[]): void {
console.log(...args); // tslint:disable-line:no-console
},