383 lines
15 KiB
JavaScript
383 lines
15 KiB
JavaScript
'use strict';
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return function (d, b) {
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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var __importStar = (this && this.__importStar) || function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
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result["default"] = mod;
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return result;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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// See: https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI
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var address_1 = require("./address");
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var abi_coder_1 = require("./abi-coder");
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var bignumber_1 = require("./bignumber");
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var bytes_1 = require("./bytes");
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var hash_1 = require("./hash");
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var keccak256_1 = require("./keccak256");
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var properties_1 = require("./properties");
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var errors = __importStar(require("../errors"));
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///////////////////////////////
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var _Indexed = /** @class */ (function () {
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function _Indexed(hash) {
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properties_1.setType(this, 'Indexed');
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properties_1.defineReadOnly(this, 'hash', hash);
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}
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return _Indexed;
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}());
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var Description = /** @class */ (function () {
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function Description(info) {
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properties_1.setType(this, 'Description');
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for (var key in info) {
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properties_1.defineReadOnly(this, key, properties_1.deepCopy(info[key], true));
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}
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Object.freeze(this);
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}
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return Description;
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}());
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var _DeployDescription = /** @class */ (function (_super) {
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__extends(_DeployDescription, _super);
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function _DeployDescription() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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_DeployDescription.prototype.encode = function (bytecode, params) {
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if (!bytes_1.isHexString(bytecode)) {
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errors.throwError('invalid contract bytecode', errors.INVALID_ARGUMENT, {
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arg: 'bytecode',
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value: bytecode
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});
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}
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errors.checkArgumentCount(params.length, this.inputs.length, ' in Interface constructor');
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try {
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return (bytecode + abi_coder_1.defaultAbiCoder.encode(this.inputs, params).substring(2));
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}
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catch (error) {
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errors.throwError('invalid constructor argument', errors.INVALID_ARGUMENT, {
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arg: error.arg,
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reason: error.reason,
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value: error.value
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});
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}
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return null;
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};
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return _DeployDescription;
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}(Description));
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var _FunctionDescription = /** @class */ (function (_super) {
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__extends(_FunctionDescription, _super);
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function _FunctionDescription() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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_FunctionDescription.prototype.encode = function (params) {
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errors.checkArgumentCount(params.length, this.inputs.length, ' in interface function ' + this.name);
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try {
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return this.sighash + abi_coder_1.defaultAbiCoder.encode(this.inputs, params).substring(2);
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}
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catch (error) {
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errors.throwError('invalid input argument', errors.INVALID_ARGUMENT, {
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arg: error.arg,
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reason: error.reason,
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value: error.value
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});
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}
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return null;
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};
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_FunctionDescription.prototype.decode = function (data) {
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try {
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return abi_coder_1.defaultAbiCoder.decode(this.outputs, bytes_1.arrayify(data));
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}
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catch (error) {
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errors.throwError('invalid data for function output', errors.INVALID_ARGUMENT, {
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arg: 'data',
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errorArg: error.arg,
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errorValue: error.value,
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value: data,
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reason: error.reason
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});
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}
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};
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return _FunctionDescription;
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}(Description));
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var Result = /** @class */ (function (_super) {
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__extends(Result, _super);
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function Result() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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return Result;
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}(Description));
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var _EventDescription = /** @class */ (function (_super) {
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__extends(_EventDescription, _super);
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function _EventDescription() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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_EventDescription.prototype.encodeTopics = function (params) {
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var _this = this;
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if (params.length > this.inputs.length) {
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errors.throwError('too many arguments for ' + this.name, errors.UNEXPECTED_ARGUMENT, { maxCount: params.length, expectedCount: this.inputs.length });
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}
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var topics = [];
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if (!this.anonymous) {
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topics.push(this.topic);
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}
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params.forEach(function (arg, index) {
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var param = _this.inputs[index];
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if (!param.indexed) {
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if (arg != null) {
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errors.throwError('cannot filter non-indexed parameters; must be null', errors.INVALID_ARGUMENT, { argument: (param.name || index), value: arg });
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}
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return;
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}
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if (arg == null) {
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topics.push(null);
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}
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else if (param.type === 'string') {
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topics.push(hash_1.id(arg));
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}
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else if (param.type === 'bytes') {
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topics.push(keccak256_1.keccak256(arg));
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}
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else if (param.type.indexOf('[') !== -1 || param.type.substring(0, 5) === 'tuple') {
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errors.throwError('filtering with tuples or arrays not implemented yet; bug us on GitHub', errors.NOT_IMPLEMENTED, { operation: 'filter(array|tuple)' });
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}
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else {
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if (param.type === 'address') {
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address_1.getAddress(arg);
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}
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topics.push(bytes_1.hexZeroPad(bytes_1.hexlify(arg), 32).toLowerCase());
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}
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});
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// Trim off trailing nulls
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while (topics.length && topics[topics.length - 1] === null) {
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topics.pop();
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}
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return topics;
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};
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_EventDescription.prototype.decode = function (data, topics) {
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// Strip the signature off of non-anonymous topics
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if (topics != null && !this.anonymous) {
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topics = topics.slice(1);
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}
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var inputIndexed = [];
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var inputNonIndexed = [];
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var inputDynamic = [];
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this.inputs.forEach(function (param, index) {
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if (param.indexed) {
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if (param.type === 'string' || param.type === 'bytes' || param.type.indexOf('[') >= 0 || param.type.substring(0, 5) === 'tuple') {
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inputIndexed.push({ type: 'bytes32', name: (param.name || '') });
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inputDynamic.push(true);
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}
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else {
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inputIndexed.push(param);
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inputDynamic.push(false);
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}
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}
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else {
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inputNonIndexed.push(param);
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inputDynamic.push(false);
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}
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});
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if (topics != null) {
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var resultIndexed = abi_coder_1.defaultAbiCoder.decode(inputIndexed, bytes_1.concat(topics));
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}
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var resultNonIndexed = abi_coder_1.defaultAbiCoder.decode(inputNonIndexed, bytes_1.arrayify(data));
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var result = {};
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var nonIndexedIndex = 0, indexedIndex = 0;
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this.inputs.forEach(function (input, index) {
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if (input.indexed) {
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if (topics == null) {
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result[index] = new _Indexed(null);
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}
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else if (inputDynamic[index]) {
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result[index] = new _Indexed(resultIndexed[indexedIndex++]);
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}
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else {
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result[index] = resultIndexed[indexedIndex++];
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}
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}
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else {
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result[index] = resultNonIndexed[nonIndexedIndex++];
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}
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if (input.name) {
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result[input.name] = result[index];
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}
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});
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result.length = this.inputs.length;
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return new Result(result);
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};
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return _EventDescription;
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}(Description));
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var _TransactionDescription = /** @class */ (function (_super) {
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__extends(_TransactionDescription, _super);
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function _TransactionDescription() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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return _TransactionDescription;
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}(Description));
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var _LogDescription = /** @class */ (function (_super) {
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__extends(_LogDescription, _super);
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function _LogDescription() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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return _LogDescription;
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}(Description));
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function addMethod(method) {
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switch (method.type) {
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case 'constructor': {
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var description = new _DeployDescription({
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inputs: method.inputs,
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payable: (method.payable == null || !!method.payable)
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});
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if (!this.deployFunction) {
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this.deployFunction = description;
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}
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break;
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}
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case 'function': {
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var signature = abi_coder_1.formatSignature(method).replace(/tuple/g, '');
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var sighash = hash_1.id(signature).substring(0, 10);
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var description = new _FunctionDescription({
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inputs: method.inputs,
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outputs: method.outputs,
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gas: method.gas,
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payable: (method.payable == null || !!method.payable),
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type: ((method.constant) ? 'call' : 'transaction'),
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signature: signature,
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sighash: sighash,
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});
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// Expose the first (and hopefully unique named function
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if (method.name && this.functions[method.name] == null) {
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properties_1.defineReadOnly(this.functions, method.name, description);
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}
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// Expose all methods by their signature, for overloaded functions
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if (this.functions[description.signature] == null) {
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properties_1.defineReadOnly(this.functions, description.signature, description);
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}
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break;
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}
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case 'event': {
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var signature = abi_coder_1.formatSignature(method).replace(/tuple/g, '');
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var description = new _EventDescription({
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name: method.name,
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signature: signature,
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inputs: method.inputs,
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topic: hash_1.id(signature),
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anonymous: (!!method.anonymous)
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});
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// Expose the first (and hopefully unique) event name
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if (method.name && this.events[method.name] == null) {
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properties_1.defineReadOnly(this.events, method.name, description);
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}
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// Expose all events by their signature, for overloaded functions
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if (this.events[description.signature] == null) {
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properties_1.defineReadOnly(this.events, description.signature, description);
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}
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break;
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}
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case 'fallback':
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// Nothing to do for fallback
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break;
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default:
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console.log('WARNING: unsupported ABI type - ' + method.type);
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break;
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}
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}
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var Interface = /** @class */ (function () {
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function Interface(abi) {
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errors.checkNew(this, Interface);
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if (typeof (abi) === 'string') {
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try {
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abi = JSON.parse(abi);
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}
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catch (error) {
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errors.throwError('could not parse ABI JSON', errors.INVALID_ARGUMENT, {
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arg: 'abi',
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errorMessage: error.message,
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value: abi
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});
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}
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if (!Array.isArray(abi)) {
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errors.throwError('invalid abi', errors.INVALID_ARGUMENT, { arg: 'abi', value: abi });
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return null;
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}
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}
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properties_1.defineReadOnly(this, 'functions', {});
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properties_1.defineReadOnly(this, 'events', {});
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// Convert any supported ABI format into a standard ABI format
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var _abi = [];
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abi.forEach(function (fragment) {
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if (typeof (fragment) === 'string') {
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fragment = abi_coder_1.parseSignature(fragment);
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}
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// @TODO: We should probable do some validation; create abiCoder.formatSignature for checking
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_abi.push(fragment);
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});
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properties_1.defineReadOnly(this, 'abi', properties_1.deepCopy(_abi, true));
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_abi.forEach(addMethod, this);
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// If there wasn't a constructor, create the default constructor
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if (!this.deployFunction) {
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addMethod.call(this, { type: 'constructor', inputs: [] });
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}
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properties_1.setType(this, 'Interface');
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}
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Interface.prototype.parseTransaction = function (tx) {
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var sighash = tx.data.substring(0, 10).toLowerCase();
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for (var name in this.functions) {
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if (name.indexOf('(') === -1) {
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continue;
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}
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var func = this.functions[name];
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if (func.sighash === sighash) {
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var result = abi_coder_1.defaultAbiCoder.decode(func.inputs, '0x' + tx.data.substring(10));
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return new _TransactionDescription({
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args: result,
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decode: func.decode,
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name: name,
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signature: func.signature,
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sighash: func.sighash,
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value: bignumber_1.bigNumberify(tx.value || '0'),
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});
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}
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}
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return null;
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};
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Interface.prototype.parseLog = function (log) {
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for (var name in this.events) {
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if (name.indexOf('(') === -1) {
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continue;
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}
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var event = this.events[name];
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if (event.anonymous) {
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continue;
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}
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if (event.topic !== log.topics[0]) {
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continue;
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}
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// @TODO: If anonymous, and the only method, and the input count matches, should we parse and return it?
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return new _LogDescription({
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decode: event.decode,
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name: event.name,
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signature: event.signature,
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topic: event.topic,
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values: event.decode(log.data, log.topics)
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});
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}
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return null;
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};
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Interface.isInterface = function (value) {
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return properties_1.isType(value, 'Interface');
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};
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Interface.isIndexed = function (value) {
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return properties_1.isType(value, 'Indexed');
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};
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return Interface;
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}());
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exports.Interface = Interface;
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