430 lines
19 KiB
JavaScript
430 lines
19 KiB
JavaScript
"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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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 extendStatics(d, b);
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};
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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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Object.defineProperty(exports, "__esModule", { value: true });
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var address_1 = require("@ethersproject/address");
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var bignumber_1 = require("@ethersproject/bignumber");
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var bytes_1 = require("@ethersproject/bytes");
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var hash_1 = require("@ethersproject/hash");
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var keccak256_1 = require("@ethersproject/keccak256");
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var properties_1 = require("@ethersproject/properties");
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var abi_coder_1 = require("./abi-coder");
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var fragments_1 = require("./fragments");
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var logger_1 = require("@ethersproject/logger");
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var _version_1 = require("./_version");
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var logger = new logger_1.Logger(_version_1.version);
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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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}(properties_1.Description));
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exports.LogDescription = LogDescription;
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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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}(properties_1.Description));
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exports.TransactionDescription = TransactionDescription;
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var Indexed = /** @class */ (function (_super) {
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__extends(Indexed, _super);
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function Indexed() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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Indexed.isIndexed = function (value) {
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return !!(value && value._isIndexed);
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};
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return Indexed;
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}(properties_1.Description));
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exports.Indexed = Indexed;
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var Interface = /** @class */ (function () {
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function Interface(fragments) {
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var _newTarget = this.constructor;
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var _this = this;
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logger.checkNew(_newTarget, Interface);
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var abi = [];
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if (typeof (fragments) === "string") {
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abi = JSON.parse(fragments);
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}
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else {
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abi = fragments;
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}
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properties_1.defineReadOnly(this, "fragments", abi.map(function (fragment) {
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return fragments_1.Fragment.from(fragment);
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}).filter(function (fragment) { return (fragment != null); }));
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properties_1.defineReadOnly(this, "_abiCoder", properties_1.getStatic((_newTarget), "getAbiCoder")());
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properties_1.defineReadOnly(this, "functions", {});
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properties_1.defineReadOnly(this, "errors", {});
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properties_1.defineReadOnly(this, "events", {});
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properties_1.defineReadOnly(this, "structs", {});
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// Add all fragments by their signature
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this.fragments.forEach(function (fragment) {
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var bucket = null;
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switch (fragment.type) {
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case "constructor":
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if (_this.deploy) {
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logger.warn("duplicate definition - constructor");
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return;
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}
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properties_1.defineReadOnly(_this, "deploy", fragment);
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return;
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case "function":
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bucket = _this.functions;
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break;
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case "event":
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bucket = _this.events;
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break;
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default:
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return;
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}
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var signature = fragment.format();
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if (bucket[signature]) {
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logger.warn("duplicate definition - " + signature);
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return;
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}
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bucket[signature] = fragment;
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});
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// If we do not have a constructor use the default "constructor() payable"
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if (!this.deploy) {
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properties_1.defineReadOnly(this, "deploy", fragments_1.ConstructorFragment.from({ type: "constructor" }));
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}
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properties_1.defineReadOnly(this, "_isInterface", true);
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}
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Interface.prototype.format = function (format) {
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if (!format) {
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format = fragments_1.FormatTypes.full;
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}
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if (format === fragments_1.FormatTypes.sighash) {
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logger.throwArgumentError("interface does not support formating sighash", "format", format);
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}
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var abi = this.fragments.map(function (fragment) { return fragment.format(format); });
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// We need to re-bundle the JSON fragments a bit
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if (format === fragments_1.FormatTypes.json) {
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return JSON.stringify(abi.map(function (j) { return JSON.parse(j); }));
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}
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return abi;
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};
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// Sub-classes can override these to handle other blockchains
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Interface.getAbiCoder = function () {
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return abi_coder_1.defaultAbiCoder;
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};
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Interface.getAddress = function (address) {
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return address_1.getAddress(address);
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};
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Interface.getSighash = function (functionFragment) {
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return bytes_1.hexDataSlice(hash_1.id(functionFragment.format()), 0, 4);
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};
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Interface.getEventTopic = function (eventFragment) {
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return hash_1.id(eventFragment.format());
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};
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// Find a function definition by any means necessary (unless it is ambiguous)
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Interface.prototype.getFunction = function (nameOrSignatureOrSighash) {
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if (bytes_1.isHexString(nameOrSignatureOrSighash)) {
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for (var name_1 in this.functions) {
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if (nameOrSignatureOrSighash === this.getSighash(name_1)) {
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return this.functions[name_1];
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}
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}
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logger.throwArgumentError("no matching function", "sighash", nameOrSignatureOrSighash);
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}
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// It is a bare name, look up the function (will return null if ambiguous)
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if (nameOrSignatureOrSighash.indexOf("(") === -1) {
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var name_2 = nameOrSignatureOrSighash.trim();
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var matching = Object.keys(this.functions).filter(function (f) { return (f.split("(" /* fix:) */)[0] === name_2); });
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if (matching.length === 0) {
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logger.throwArgumentError("no matching function", "name", name_2);
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}
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else if (matching.length > 1) {
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logger.throwArgumentError("multiple matching functions", "name", name_2);
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}
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return this.functions[matching[0]];
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}
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// Normlize the signature and lookup the function
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var result = this.functions[fragments_1.FunctionFragment.fromString(nameOrSignatureOrSighash).format()];
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if (!result) {
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logger.throwArgumentError("no matching function", "signature", nameOrSignatureOrSighash);
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}
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return result;
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};
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// Find an event definition by any means necessary (unless it is ambiguous)
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Interface.prototype.getEvent = function (nameOrSignatureOrTopic) {
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if (bytes_1.isHexString(nameOrSignatureOrTopic)) {
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var topichash = nameOrSignatureOrTopic.toLowerCase();
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for (var name_3 in this.events) {
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if (topichash === this.getEventTopic(name_3)) {
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return this.events[name_3];
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}
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}
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logger.throwArgumentError("no matching event", "topichash", topichash);
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}
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// It is a bare name, look up the function (will return null if ambiguous)
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if (nameOrSignatureOrTopic.indexOf("(") === -1) {
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var name_4 = nameOrSignatureOrTopic.trim();
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var matching = Object.keys(this.events).filter(function (f) { return (f.split("(" /* fix:) */)[0] === name_4); });
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if (matching.length === 0) {
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logger.throwArgumentError("no matching event", "name", name_4);
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}
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else if (matching.length > 1) {
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logger.throwArgumentError("multiple matching events", "name", name_4);
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}
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return this.events[matching[0]];
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}
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// Normlize the signature and lookup the function
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var result = this.events[fragments_1.EventFragment.fromString(nameOrSignatureOrTopic).format()];
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if (!result) {
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logger.throwArgumentError("no matching event", "signature", nameOrSignatureOrTopic);
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}
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return result;
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};
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// Get the sighash (the bytes4 selector) used by Solidity to identify a function
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Interface.prototype.getSighash = function (functionFragment) {
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if (typeof (functionFragment) === "string") {
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functionFragment = this.getFunction(functionFragment);
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}
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return properties_1.getStatic(this.constructor, "getSighash")(functionFragment);
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};
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// Get the topic (the bytes32 hash) used by Solidity to identify an event
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Interface.prototype.getEventTopic = function (eventFragment) {
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if (typeof (eventFragment) === "string") {
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eventFragment = this.getEvent(eventFragment);
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}
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return properties_1.getStatic(this.constructor, "getEventTopic")(eventFragment);
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};
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Interface.prototype._decodeParams = function (params, data) {
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return this._abiCoder.decode(params, data);
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};
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Interface.prototype._encodeParams = function (params, values) {
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return this._abiCoder.encode(params, values);
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};
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Interface.prototype.encodeDeploy = function (values) {
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return this._encodeParams(this.deploy.inputs, values || []);
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};
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// Decode the data for a function call (e.g. tx.data)
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Interface.prototype.decodeFunctionData = function (functionFragment, data) {
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if (typeof (functionFragment) === "string") {
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functionFragment = this.getFunction(functionFragment);
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}
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var bytes = bytes_1.arrayify(data);
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if (bytes_1.hexlify(bytes.slice(0, 4)) !== this.getSighash(functionFragment)) {
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logger.throwArgumentError("data signature does not match function " + functionFragment.name + ".", "data", bytes_1.hexlify(bytes));
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}
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return this._decodeParams(functionFragment.inputs, bytes.slice(4));
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};
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// Encode the data for a function call (e.g. tx.data)
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Interface.prototype.encodeFunctionData = function (functionFragment, values) {
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if (typeof (functionFragment) === "string") {
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functionFragment = this.getFunction(functionFragment);
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}
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return bytes_1.hexlify(bytes_1.concat([
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this.getSighash(functionFragment),
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this._encodeParams(functionFragment.inputs, values || [])
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]));
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};
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// Decode the result from a function call (e.g. from eth_call)
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Interface.prototype.decodeFunctionResult = function (functionFragment, data) {
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if (typeof (functionFragment) === "string") {
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functionFragment = this.getFunction(functionFragment);
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}
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var bytes = bytes_1.arrayify(data);
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var reason = null;
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var errorSignature = null;
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switch (bytes.length % this._abiCoder._getWordSize()) {
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case 0:
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try {
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return this._abiCoder.decode(functionFragment.outputs, bytes);
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}
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catch (error) { }
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break;
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case 4:
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if (bytes_1.hexlify(bytes.slice(0, 4)) === "0x08c379a0") {
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errorSignature = "Error(string)";
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reason = this._abiCoder.decode(["string"], bytes.slice(4))[0];
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}
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break;
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}
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return logger.throwError("call revert exception", logger_1.Logger.errors.CALL_EXCEPTION, {
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method: functionFragment.format(),
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errorSignature: errorSignature,
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errorArgs: [reason],
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reason: reason
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});
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};
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// Encode the result for a function call (e.g. for eth_call)
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Interface.prototype.encodeFunctionResult = function (functionFragment, values) {
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if (typeof (functionFragment) === "string") {
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functionFragment = this.getFunction(functionFragment);
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}
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return bytes_1.hexlify(this._abiCoder.encode(functionFragment.outputs, values || []));
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};
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// Create the filter for the event with search criteria (e.g. for eth_filterLog)
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Interface.prototype.encodeFilterTopics = function (eventFragment, values) {
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var _this = this;
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if (typeof (eventFragment) === "string") {
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eventFragment = this.getEvent(eventFragment);
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}
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if (values.length > eventFragment.inputs.length) {
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logger.throwError("too many arguments for " + eventFragment.format(), logger_1.Logger.errors.UNEXPECTED_ARGUMENT, {
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argument: "values",
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value: values
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});
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}
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var topics = [];
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if (!eventFragment.anonymous) {
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topics.push(this.getEventTopic(eventFragment));
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}
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values.forEach(function (value, index) {
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var param = eventFragment.inputs[index];
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if (!param.indexed) {
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if (value != null) {
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logger.throwArgumentError("cannot filter non-indexed parameters; must be null", ("contract." + param.name), value);
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}
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return;
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}
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if (value == 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(value));
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}
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else if (param.type === "bytes") {
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topics.push(keccak256_1.keccak256(bytes_1.hexlify(value)));
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}
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else if (param.type.indexOf("[") !== -1 || param.type.substring(0, 5) === "tuple") {
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logger.throwArgumentError("filtering with tuples or arrays not supported", ("contract." + param.name), value);
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}
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else {
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// Check addresses are valid
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if (param.type === "address") {
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_this._abiCoder.encode(["address"], [value]);
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}
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topics.push(bytes_1.hexZeroPad(bytes_1.hexlify(value), 32));
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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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// Decode a filter for the event and the search criteria
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Interface.prototype.decodeEventLog = function (eventFragment, data, topics) {
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if (typeof (eventFragment) === "string") {
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eventFragment = this.getEvent(eventFragment);
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}
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if (topics != null && !eventFragment.anonymous) {
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var topicHash = this.getEventTopic(eventFragment);
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if (!bytes_1.isHexString(topics[0], 32) || topics[0].toLowerCase() !== topicHash) {
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logger.throwError("fragment/topic mismatch", logger_1.Logger.errors.INVALID_ARGUMENT, { argument: "topics[0]", expected: topicHash, value: topics[0] });
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}
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topics = topics.slice(1);
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}
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var indexed = [];
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var nonIndexed = [];
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var dynamic = [];
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eventFragment.inputs.forEach(function (param, index) {
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if (param.indexed) {
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if (param.type === "string" || param.type === "bytes" || param.baseType === "tuple" || param.baseType === "array") {
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indexed.push(fragments_1.ParamType.fromObject({ type: "bytes32", name: param.name }));
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dynamic.push(true);
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}
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else {
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indexed.push(param);
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dynamic.push(false);
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}
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}
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else {
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nonIndexed.push(param);
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dynamic.push(false);
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}
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});
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var resultIndexed = (topics != null) ? this._abiCoder.decode(indexed, bytes_1.concat(topics)) : null;
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var resultNonIndexed = this._abiCoder.decode(nonIndexed, data);
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var result = [];
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var nonIndexedIndex = 0, indexedIndex = 0;
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eventFragment.inputs.forEach(function (param, index) {
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if (param.indexed) {
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if (resultIndexed == null) {
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result[index] = new Indexed({ _isIndexed: true, hash: null });
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}
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else if (dynamic[index]) {
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result[index] = new Indexed({ _isIndexed: true, hash: 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 (param.name && result[param.name] == null) {
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result[param.name] = result[index];
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}
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});
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return result;
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};
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// Given a transaction, find the matching function fragment (if any) and
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// determine all its properties and call parameters
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Interface.prototype.parseTransaction = function (tx) {
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var fragment = this.getFunction(tx.data.substring(0, 10).toLowerCase());
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if (!fragment) {
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return null;
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}
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return new TransactionDescription({
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args: this._abiCoder.decode(fragment.inputs, "0x" + tx.data.substring(10)),
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functionFragment: fragment,
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name: fragment.name,
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signature: fragment.format(),
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sighash: this.getSighash(fragment),
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value: bignumber_1.BigNumber.from(tx.value || "0"),
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});
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};
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// Given an event log, find the matching event fragment (if any) and
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// determine all its properties and values
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Interface.prototype.parseLog = function (log) {
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var fragment = this.getEvent(log.topics[0]);
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if (!fragment || fragment.anonymous) {
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return null;
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}
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// @TODO: If anonymous, and the only method, and the input count matches, should we parse?
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// Probably not, because just because it is the only event in the ABI does
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// not mean we have the full ABI; maybe jsut a fragment?
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return new LogDescription({
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eventFragment: fragment,
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name: fragment.name,
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signature: fragment.format(),
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topic: this.getEventTopic(fragment),
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args: this.decodeEventLog(fragment, log.data, log.topics)
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});
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};
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/*
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static from(value: Array<Fragment | string | JsonAbi> | string | Interface) {
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if (Interface.isInterface(value)) {
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return value;
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}
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if (typeof(value) === "string") {
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return new Interface(JSON.parse(value));
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}
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return new Interface(value);
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}
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*/
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Interface.isInterface = function (value) {
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return !!(value && value._isInterface);
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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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