980 lines
37 KiB
JavaScript
980 lines
37 KiB
JavaScript
/**
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* About Interface
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*
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* @_subsection api/abi:Interfaces [interfaces]
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*/
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import { keccak256 } from "../crypto/index.js";
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import { id } from "../hash/index.js";
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import { concat, dataSlice, getBigInt, getBytes, getBytesCopy, hexlify, zeroPadValue, isHexString, defineProperties, assertArgument, toBeHex, assert } from "../utils/index.js";
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import { AbiCoder } from "./abi-coder.js";
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import { checkResultErrors, Result } from "./coders/abstract-coder.js";
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import { ConstructorFragment, ErrorFragment, EventFragment, Fragment, FunctionFragment, ParamType } from "./fragments.js";
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import { Typed } from "./typed.js";
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export { checkResultErrors, Result };
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export class LogDescription {
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fragment;
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name;
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signature;
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topic;
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args;
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constructor(fragment, topic, args) {
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const name = fragment.name, signature = fragment.format();
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defineProperties(this, {
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fragment, name, signature, topic, args
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});
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}
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}
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export class TransactionDescription {
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fragment;
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name;
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args;
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signature;
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selector;
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value;
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constructor(fragment, selector, args, value) {
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const name = fragment.name, signature = fragment.format();
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defineProperties(this, {
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fragment, name, args, signature, selector, value
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});
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}
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}
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export class ErrorDescription {
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fragment;
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name;
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args;
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signature;
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selector;
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constructor(fragment, selector, args) {
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const name = fragment.name, signature = fragment.format();
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defineProperties(this, {
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fragment, name, args, signature, selector
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});
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}
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}
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export class Indexed {
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hash;
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_isIndexed;
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static isIndexed(value) {
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return !!(value && value._isIndexed);
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}
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constructor(hash) {
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defineProperties(this, { hash, _isIndexed: true });
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}
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}
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// https://docs.soliditylang.org/en/v0.8.13/control-structures.html?highlight=panic#panic-via-assert-and-error-via-require
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const PanicReasons = {
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"0": "generic panic",
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"1": "assert(false)",
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"17": "arithmetic overflow",
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"18": "division or modulo by zero",
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"33": "enum overflow",
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"34": "invalid encoded storage byte array accessed",
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"49": "out-of-bounds array access; popping on an empty array",
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"50": "out-of-bounds access of an array or bytesN",
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"65": "out of memory",
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"81": "uninitialized function",
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};
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const BuiltinErrors = {
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"0x08c379a0": {
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signature: "Error(string)",
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name: "Error",
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inputs: ["string"],
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reason: (message) => {
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return `reverted with reason string ${JSON.stringify(message)}`;
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}
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},
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"0x4e487b71": {
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signature: "Panic(uint256)",
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name: "Panic",
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inputs: ["uint256"],
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reason: (code) => {
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let reason = "unknown panic code";
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if (code >= 0 && code <= 0xff && PanicReasons[code.toString()]) {
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reason = PanicReasons[code.toString()];
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}
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return `reverted with panic code 0x${code.toString(16)} (${reason})`;
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}
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}
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};
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/**
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* An Interface abstracts many of the low-level details for
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* encoding and decoding the data on the blockchain.
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*
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* An ABI provides information on how to encode data to send to
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* a Contract, how to decode the results and events and how to
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* interpret revert errors.
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*
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* The ABI can be specified by [any supported format](InterfaceAbi).
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*/
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export class Interface {
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/**
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* All the Contract ABI members (i.e. methods, events, errors, etc).
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*/
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fragments;
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/**
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* The Contract constructor.
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*/
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deploy;
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/**
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* The Fallback method, if any.
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*/
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fallback;
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/**
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* If receiving ether is supported.
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*/
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receive;
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#errors;
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#events;
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#functions;
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// #structs: Map<string, StructFragment>;
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#abiCoder;
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/**
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* Create a new Interface for the %%fragments%%.
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*/
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constructor(fragments) {
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let 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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this.#functions = new Map();
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this.#errors = new Map();
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this.#events = new Map();
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// this.#structs = new Map();
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const frags = [];
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for (const a of abi) {
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try {
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frags.push(Fragment.from(a));
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}
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catch (error) {
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console.log("EE", error);
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}
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}
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defineProperties(this, {
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fragments: Object.freeze(frags)
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});
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let fallback = null;
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let receive = false;
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this.#abiCoder = this.getAbiCoder();
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// Add all fragments by their signature
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this.fragments.forEach((fragment, index) => {
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let bucket;
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switch (fragment.type) {
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case "constructor":
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if (this.deploy) {
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console.log("duplicate definition - constructor");
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return;
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}
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//checkNames(fragment, "input", fragment.inputs);
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defineProperties(this, { deploy: fragment });
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return;
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case "fallback":
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if (fragment.inputs.length === 0) {
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receive = true;
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}
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else {
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assertArgument(!fallback || fragment.payable !== fallback.payable, "conflicting fallback fragments", `fragments[${index}]`, fragment);
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fallback = fragment;
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receive = fallback.payable;
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}
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return;
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case "function":
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//checkNames(fragment, "input", fragment.inputs);
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//checkNames(fragment, "output", (<FunctionFragment>fragment).outputs);
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bucket = this.#functions;
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break;
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case "event":
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//checkNames(fragment, "input", fragment.inputs);
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bucket = this.#events;
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break;
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case "error":
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bucket = this.#errors;
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break;
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default:
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return;
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}
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// Two identical entries; ignore it
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const signature = fragment.format();
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if (bucket.has(signature)) {
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return;
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}
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bucket.set(signature, fragment);
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});
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// If we do not have a constructor add a default
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if (!this.deploy) {
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defineProperties(this, {
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deploy: ConstructorFragment.from("constructor()")
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});
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}
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defineProperties(this, { fallback, receive });
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}
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/**
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* Returns the entire Human-Readable ABI, as an array of
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* signatures, optionally as %%minimal%% strings, which
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* removes parameter names and unneceesary spaces.
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*/
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format(minimal) {
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const format = (minimal ? "minimal" : "full");
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const abi = this.fragments.map((f) => f.format(format));
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return abi;
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}
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/**
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* Return the JSON-encoded ABI. This is the format Solidiy
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* returns.
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*/
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formatJson() {
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const abi = this.fragments.map((f) => f.format("json"));
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// We need to re-bundle the JSON fragments a bit
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return JSON.stringify(abi.map((j) => JSON.parse(j)));
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}
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/**
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* The ABI coder that will be used to encode and decode binary
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* data.
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*/
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getAbiCoder() {
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return AbiCoder.defaultAbiCoder();
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}
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// Find a function definition by any means necessary (unless it is ambiguous)
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#getFunction(key, values, forceUnique) {
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// Selector
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if (isHexString(key)) {
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const selector = key.toLowerCase();
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for (const fragment of this.#functions.values()) {
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if (selector === fragment.selector) {
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return fragment;
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}
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}
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return null;
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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 (key.indexOf("(") === -1) {
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const matching = [];
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for (const [name, fragment] of this.#functions) {
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if (name.split("(" /* fix:) */)[0] === key) {
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matching.push(fragment);
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}
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}
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if (values) {
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const lastValue = (values.length > 0) ? values[values.length - 1] : null;
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let valueLength = values.length;
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let allowOptions = true;
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if (Typed.isTyped(lastValue) && lastValue.type === "overrides") {
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allowOptions = false;
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valueLength--;
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}
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// Remove all matches that don't have a compatible length. The args
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// may contain an overrides, so the match may have n or n - 1 parameters
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for (let i = matching.length - 1; i >= 0; i--) {
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const inputs = matching[i].inputs.length;
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if (inputs !== valueLength && (!allowOptions || inputs !== valueLength - 1)) {
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matching.splice(i, 1);
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}
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}
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// Remove all matches that don't match the Typed signature
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for (let i = matching.length - 1; i >= 0; i--) {
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const inputs = matching[i].inputs;
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for (let j = 0; j < values.length; j++) {
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// Not a typed value
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if (!Typed.isTyped(values[j])) {
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continue;
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}
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// We are past the inputs
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if (j >= inputs.length) {
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if (values[j].type === "overrides") {
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continue;
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}
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matching.splice(i, 1);
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break;
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}
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// Make sure the value type matches the input type
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if (values[j].type !== inputs[j].baseType) {
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matching.splice(i, 1);
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break;
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}
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}
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}
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}
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// We found a single matching signature with an overrides, but the
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// last value is something that cannot possibly be an options
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if (matching.length === 1 && values && values.length !== matching[0].inputs.length) {
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const lastArg = values[values.length - 1];
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if (lastArg == null || Array.isArray(lastArg) || typeof (lastArg) !== "object") {
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matching.splice(0, 1);
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}
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}
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if (matching.length === 0) {
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return null;
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}
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if (matching.length > 1 && forceUnique) {
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const matchStr = matching.map((m) => JSON.stringify(m.format())).join(", ");
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assertArgument(false, `ambiguous function description (i.e. matches ${matchStr})`, "key", key);
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}
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return matching[0];
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}
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// Normalize the signature and lookup the function
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const result = this.#functions.get(FunctionFragment.from(key).format());
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if (result) {
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return result;
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}
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return null;
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}
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/**
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* Get the function name for %%key%%, which may be a function selector,
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* function name or function signature that belongs to the ABI.
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*/
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getFunctionName(key) {
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const fragment = this.#getFunction(key, null, false);
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assertArgument(fragment, "no matching function", "key", key);
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return fragment.name;
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}
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/**
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* Get the [[FunctionFragment]] for %%key%%, which may be a function
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* selector, function name or function signature that belongs to the ABI.
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*
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* If %%values%% is provided, it will use the Typed API to handle
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* ambiguous cases where multiple functions match by name.
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*
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* If the %%key%% and %%values%% do not refine to a single function in
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* the ABI, this will throw.
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*/
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getFunction(key, values) {
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return this.#getFunction(key, values || null, true);
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}
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/**
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* Iterate over all functions, calling %%callback%%, sorted by their name.
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*/
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forEachFunction(callback) {
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const names = Array.from(this.#functions.keys());
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names.sort((a, b) => a.localeCompare(b));
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for (let i = 0; i < names.length; i++) {
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const name = names[i];
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callback((this.#functions.get(name)), i);
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}
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}
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// Find an event definition by any means necessary (unless it is ambiguous)
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#getEvent(key, values, forceUnique) {
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// EventTopic
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if (isHexString(key)) {
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const eventTopic = key.toLowerCase();
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for (const fragment of this.#events.values()) {
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if (eventTopic === fragment.topicHash) {
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return fragment;
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}
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}
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return null;
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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 (key.indexOf("(") === -1) {
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const matching = [];
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for (const [name, fragment] of this.#events) {
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if (name.split("(" /* fix:) */)[0] === key) {
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matching.push(fragment);
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}
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}
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if (values) {
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// Remove all matches that don't have a compatible length.
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for (let i = matching.length - 1; i >= 0; i--) {
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if (matching[i].inputs.length < values.length) {
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matching.splice(i, 1);
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}
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}
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// Remove all matches that don't match the Typed signature
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for (let i = matching.length - 1; i >= 0; i--) {
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const inputs = matching[i].inputs;
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for (let j = 0; j < values.length; j++) {
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// Not a typed value
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if (!Typed.isTyped(values[j])) {
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continue;
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}
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// Make sure the value type matches the input type
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if (values[j].type !== inputs[j].baseType) {
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matching.splice(i, 1);
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break;
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}
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}
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}
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}
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if (matching.length === 0) {
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return null;
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}
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if (matching.length > 1 && forceUnique) {
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const matchStr = matching.map((m) => JSON.stringify(m.format())).join(", ");
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assertArgument(false, `ambiguous event description (i.e. matches ${matchStr})`, "key", key);
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}
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return matching[0];
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}
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// Normalize the signature and lookup the function
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const result = this.#events.get(EventFragment.from(key).format());
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if (result) {
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return result;
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}
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return null;
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}
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/**
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* Get the event name for %%key%%, which may be a topic hash,
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* event name or event signature that belongs to the ABI.
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*/
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getEventName(key) {
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const fragment = this.#getEvent(key, null, false);
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assertArgument(fragment, "no matching event", "key", key);
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return fragment.name;
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}
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/**
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* Get the [[EventFragment]] for %%key%%, which may be a topic hash,
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* event name or event signature that belongs to the ABI.
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*
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* If %%values%% is provided, it will use the Typed API to handle
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* ambiguous cases where multiple events match by name.
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*
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* If the %%key%% and %%values%% do not refine to a single event in
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* the ABI, this will throw.
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*/
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getEvent(key, values) {
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return this.#getEvent(key, values || null, true);
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}
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/**
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* Iterate over all events, calling %%callback%%, sorted by their name.
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*/
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forEachEvent(callback) {
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const names = Array.from(this.#events.keys());
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names.sort((a, b) => a.localeCompare(b));
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for (let i = 0; i < names.length; i++) {
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const name = names[i];
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callback((this.#events.get(name)), i);
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}
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}
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/**
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* Get the [[ErrorFragment]] for %%key%%, which may be an error
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* selector, error name or error signature that belongs to the ABI.
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*
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* If %%values%% is provided, it will use the Typed API to handle
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* ambiguous cases where multiple errors match by name.
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*
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* If the %%key%% and %%values%% do not refine to a single error in
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* the ABI, this will throw.
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*/
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getError(key, values) {
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if (isHexString(key)) {
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const selector = key.toLowerCase();
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if (BuiltinErrors[selector]) {
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return ErrorFragment.from(BuiltinErrors[selector].signature);
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}
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for (const fragment of this.#errors.values()) {
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if (selector === fragment.selector) {
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return fragment;
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}
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}
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return null;
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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 (key.indexOf("(") === -1) {
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const matching = [];
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for (const [name, fragment] of this.#errors) {
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if (name.split("(" /* fix:) */)[0] === key) {
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matching.push(fragment);
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}
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}
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if (matching.length === 0) {
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if (key === "Error") {
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return ErrorFragment.from("error Error(string)");
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}
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if (key === "Panic") {
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return ErrorFragment.from("error Panic(uint256)");
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}
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return null;
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}
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else if (matching.length > 1) {
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const matchStr = matching.map((m) => JSON.stringify(m.format())).join(", ");
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assertArgument(false, `ambiguous error description (i.e. ${matchStr})`, "name", key);
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}
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return matching[0];
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}
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// Normalize the signature and lookup the function
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key = ErrorFragment.from(key).format();
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if (key === "Error(string)") {
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return ErrorFragment.from("error Error(string)");
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}
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if (key === "Panic(uint256)") {
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return ErrorFragment.from("error Panic(uint256)");
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}
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const result = this.#errors.get(key);
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if (result) {
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return result;
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}
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return null;
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}
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/**
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* Iterate over all errors, calling %%callback%%, sorted by their name.
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*/
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forEachError(callback) {
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const names = Array.from(this.#errors.keys());
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names.sort((a, b) => a.localeCompare(b));
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for (let i = 0; i < names.length; i++) {
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const name = names[i];
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callback((this.#errors.get(name)), i);
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}
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}
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// Get the 4-byte selector used by Solidity to identify a function
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/*
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getSelector(fragment: ErrorFragment | FunctionFragment): string {
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if (typeof(fragment) === "string") {
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const matches: Array<Fragment> = [ ];
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try { matches.push(this.getFunction(fragment)); } catch (error) { }
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try { matches.push(this.getError(<string>fragment)); } catch (_) { }
|
|
|
|
if (matches.length === 0) {
|
|
logger.throwArgumentError("unknown fragment", "key", fragment);
|
|
} else if (matches.length > 1) {
|
|
logger.throwArgumentError("ambiguous fragment matches function and error", "key", fragment);
|
|
}
|
|
|
|
fragment = matches[0];
|
|
}
|
|
|
|
return dataSlice(id(fragment.format()), 0, 4);
|
|
}
|
|
*/
|
|
// Get the 32-byte topic hash used by Solidity to identify an event
|
|
/*
|
|
getEventTopic(fragment: EventFragment): string {
|
|
//if (typeof(fragment) === "string") { fragment = this.getEvent(eventFragment); }
|
|
return id(fragment.format());
|
|
}
|
|
*/
|
|
_decodeParams(params, data) {
|
|
return this.#abiCoder.decode(params, data);
|
|
}
|
|
_encodeParams(params, values) {
|
|
return this.#abiCoder.encode(params, values);
|
|
}
|
|
/**
|
|
* Encodes a ``tx.data`` object for deploying the Contract with
|
|
* the %%values%% as the constructor arguments.
|
|
*/
|
|
encodeDeploy(values) {
|
|
return this._encodeParams(this.deploy.inputs, values || []);
|
|
}
|
|
/**
|
|
* Decodes the result %%data%% (e.g. from an ``eth_call``) for the
|
|
* specified error (see [[getError]] for valid values for
|
|
* %%key%%).
|
|
*
|
|
* Most developers should prefer the [[parseCallResult]] method instead,
|
|
* which will automatically detect a ``CALL_EXCEPTION`` and throw the
|
|
* corresponding error.
|
|
*/
|
|
decodeErrorResult(fragment, data) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getError(fragment);
|
|
assertArgument(f, "unknown error", "fragment", fragment);
|
|
fragment = f;
|
|
}
|
|
assertArgument(dataSlice(data, 0, 4) === fragment.selector, `data signature does not match error ${fragment.name}.`, "data", data);
|
|
return this._decodeParams(fragment.inputs, dataSlice(data, 4));
|
|
}
|
|
/**
|
|
* Encodes the transaction revert data for a call result that
|
|
* reverted from the the Contract with the sepcified %%error%%
|
|
* (see [[getError]] for valid values for %%fragment%%) with the %%values%%.
|
|
*
|
|
* This is generally not used by most developers, unless trying to mock
|
|
* a result from a Contract.
|
|
*/
|
|
encodeErrorResult(fragment, values) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getError(fragment);
|
|
assertArgument(f, "unknown error", "fragment", fragment);
|
|
fragment = f;
|
|
}
|
|
return concat([
|
|
fragment.selector,
|
|
this._encodeParams(fragment.inputs, values || [])
|
|
]);
|
|
}
|
|
/**
|
|
* Decodes the %%data%% from a transaction ``tx.data`` for
|
|
* the function specified (see [[getFunction]] for valid values
|
|
* for %%fragment%%).
|
|
*
|
|
* Most developers should prefer the [[parseTransaction]] method
|
|
* instead, which will automatically detect the fragment.
|
|
*/
|
|
decodeFunctionData(fragment, data) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getFunction(fragment);
|
|
assertArgument(f, "unknown function", "fragment", fragment);
|
|
fragment = f;
|
|
}
|
|
assertArgument(dataSlice(data, 0, 4) === fragment.selector, `data signature does not match function ${fragment.name}.`, "data", data);
|
|
return this._decodeParams(fragment.inputs, dataSlice(data, 4));
|
|
}
|
|
/**
|
|
* Encodes the ``tx.data`` for a transaction that calls the function
|
|
* specified (see [[getFunction]] for valid values for %%fragment%%) with
|
|
* the %%values%%.
|
|
*/
|
|
encodeFunctionData(fragment, values) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getFunction(fragment);
|
|
assertArgument(f, "unknown function", "fragment", fragment);
|
|
fragment = f;
|
|
}
|
|
return concat([
|
|
fragment.selector,
|
|
this._encodeParams(fragment.inputs, values || [])
|
|
]);
|
|
}
|
|
/**
|
|
* Decodes the result %%data%% (e.g. from an ``eth_call``) for the
|
|
* specified function (see [[getFunction]] for valid values for
|
|
* %%key%%).
|
|
*
|
|
* Most developers should prefer the [[parseCallResult]] method instead,
|
|
* which will automatically detect a ``CALL_EXCEPTION`` and throw the
|
|
* corresponding error.
|
|
*/
|
|
decodeFunctionResult(fragment, data) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getFunction(fragment);
|
|
assertArgument(f, "unknown function", "fragment", fragment);
|
|
fragment = f;
|
|
}
|
|
let message = "invalid length for result data";
|
|
const bytes = getBytesCopy(data);
|
|
if ((bytes.length % 32) === 0) {
|
|
try {
|
|
return this.#abiCoder.decode(fragment.outputs, bytes);
|
|
}
|
|
catch (error) {
|
|
message = "could not decode result data";
|
|
}
|
|
}
|
|
// Call returned data with no error, but the data is junk
|
|
assert(false, message, "BAD_DATA", {
|
|
value: hexlify(bytes),
|
|
info: { method: fragment.name, signature: fragment.format() }
|
|
});
|
|
}
|
|
makeError(_data, tx) {
|
|
const data = getBytes(_data, "data");
|
|
const error = AbiCoder.getBuiltinCallException("call", tx, data);
|
|
// Not a built-in error; try finding a custom error
|
|
if (!error.message.match(/could not decode/)) {
|
|
const selector = hexlify(data.slice(0, 4));
|
|
error.message = "execution reverted (unknown custom error)";
|
|
const ef = this.getError(selector);
|
|
if (ef) {
|
|
try {
|
|
error.revert = {
|
|
name: ef.name,
|
|
signature: ef.format(),
|
|
args: this.#abiCoder.decode(ef.inputs, data.slice(4))
|
|
};
|
|
error.reason = error.revert.signature;
|
|
error.message = `execution reverted: ${error.reason}`;
|
|
}
|
|
catch (e) {
|
|
error.message = `execution reverted (coult not decode custom error)`;
|
|
}
|
|
}
|
|
}
|
|
// Add the invocation, if available
|
|
const parsed = this.parseTransaction(tx);
|
|
if (parsed) {
|
|
error.invocation = {
|
|
method: parsed.name,
|
|
signature: parsed.signature,
|
|
args: parsed.args
|
|
};
|
|
}
|
|
return error;
|
|
}
|
|
/**
|
|
* Encodes the result data (e.g. from an ``eth_call``) for the
|
|
* specified function (see [[getFunction]] for valid values
|
|
* for %%fragment%%) with %%values%%.
|
|
*
|
|
* This is generally not used by most developers, unless trying to mock
|
|
* a result from a Contract.
|
|
*/
|
|
encodeFunctionResult(fragment, values) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getFunction(fragment);
|
|
assertArgument(f, "unknown function", "fragment", fragment);
|
|
fragment = f;
|
|
}
|
|
return hexlify(this.#abiCoder.encode(fragment.outputs, values || []));
|
|
}
|
|
/*
|
|
spelunk(inputs: Array<ParamType>, values: ReadonlyArray<any>, processfunc: (type: string, value: any) => Promise<any>): Promise<Array<any>> {
|
|
const promises: Array<Promise<>> = [ ];
|
|
const process = function(type: ParamType, value: any): any {
|
|
if (type.baseType === "array") {
|
|
return descend(type.child
|
|
}
|
|
if (type. === "address") {
|
|
}
|
|
};
|
|
|
|
const descend = function (inputs: Array<ParamType>, values: ReadonlyArray<any>) {
|
|
if (inputs.length !== values.length) { throw new Error("length mismatch"); }
|
|
|
|
};
|
|
|
|
const result: Array<any> = [ ];
|
|
values.forEach((value, index) => {
|
|
if (value == null) {
|
|
topics.push(null);
|
|
} else if (param.baseType === "array" || param.baseType === "tuple") {
|
|
logger.throwArgumentError("filtering with tuples or arrays not supported", ("contract." + param.name), value);
|
|
} else if (Array.isArray(value)) {
|
|
topics.push(value.map((value) => encodeTopic(param, value)));
|
|
} else {
|
|
topics.push(encodeTopic(param, value));
|
|
}
|
|
});
|
|
}
|
|
*/
|
|
// Create the filter for the event with search criteria (e.g. for eth_filterLog)
|
|
encodeFilterTopics(fragment, values) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getEvent(fragment);
|
|
assertArgument(f, "unknown event", "eventFragment", fragment);
|
|
fragment = f;
|
|
}
|
|
assert(values.length <= fragment.inputs.length, `too many arguments for ${fragment.format()}`, "UNEXPECTED_ARGUMENT", { count: values.length, expectedCount: fragment.inputs.length });
|
|
const topics = [];
|
|
if (!fragment.anonymous) {
|
|
topics.push(fragment.topicHash);
|
|
}
|
|
// @TODO: Use the coders for this; to properly support tuples, etc.
|
|
const encodeTopic = (param, value) => {
|
|
if (param.type === "string") {
|
|
return id(value);
|
|
}
|
|
else if (param.type === "bytes") {
|
|
return keccak256(hexlify(value));
|
|
}
|
|
if (param.type === "bool" && typeof (value) === "boolean") {
|
|
value = (value ? "0x01" : "0x00");
|
|
}
|
|
if (param.type.match(/^u?int/)) {
|
|
value = toBeHex(value);
|
|
}
|
|
// Check addresses are valid
|
|
if (param.type === "address") {
|
|
this.#abiCoder.encode(["address"], [value]);
|
|
}
|
|
return zeroPadValue(hexlify(value), 32);
|
|
//@TOOD should probably be return toHex(value, 32)
|
|
};
|
|
values.forEach((value, index) => {
|
|
const param = fragment.inputs[index];
|
|
if (!param.indexed) {
|
|
assertArgument(value == null, "cannot filter non-indexed parameters; must be null", ("contract." + param.name), value);
|
|
return;
|
|
}
|
|
if (value == null) {
|
|
topics.push(null);
|
|
}
|
|
else if (param.baseType === "array" || param.baseType === "tuple") {
|
|
assertArgument(false, "filtering with tuples or arrays not supported", ("contract." + param.name), value);
|
|
}
|
|
else if (Array.isArray(value)) {
|
|
topics.push(value.map((value) => encodeTopic(param, value)));
|
|
}
|
|
else {
|
|
topics.push(encodeTopic(param, value));
|
|
}
|
|
});
|
|
// Trim off trailing nulls
|
|
while (topics.length && topics[topics.length - 1] === null) {
|
|
topics.pop();
|
|
}
|
|
return topics;
|
|
}
|
|
encodeEventLog(fragment, values) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getEvent(fragment);
|
|
assertArgument(f, "unknown event", "eventFragment", fragment);
|
|
fragment = f;
|
|
}
|
|
const topics = [];
|
|
const dataTypes = [];
|
|
const dataValues = [];
|
|
if (!fragment.anonymous) {
|
|
topics.push(fragment.topicHash);
|
|
}
|
|
assertArgument(values.length === fragment.inputs.length, "event arguments/values mismatch", "values", values);
|
|
fragment.inputs.forEach((param, index) => {
|
|
const value = values[index];
|
|
if (param.indexed) {
|
|
if (param.type === "string") {
|
|
topics.push(id(value));
|
|
}
|
|
else if (param.type === "bytes") {
|
|
topics.push(keccak256(value));
|
|
}
|
|
else if (param.baseType === "tuple" || param.baseType === "array") {
|
|
// @TODO
|
|
throw new Error("not implemented");
|
|
}
|
|
else {
|
|
topics.push(this.#abiCoder.encode([param.type], [value]));
|
|
}
|
|
}
|
|
else {
|
|
dataTypes.push(param);
|
|
dataValues.push(value);
|
|
}
|
|
});
|
|
return {
|
|
data: this.#abiCoder.encode(dataTypes, dataValues),
|
|
topics: topics
|
|
};
|
|
}
|
|
// Decode a filter for the event and the search criteria
|
|
decodeEventLog(fragment, data, topics) {
|
|
if (typeof (fragment) === "string") {
|
|
const f = this.getEvent(fragment);
|
|
assertArgument(f, "unknown event", "eventFragment", fragment);
|
|
fragment = f;
|
|
}
|
|
if (topics != null && !fragment.anonymous) {
|
|
const eventTopic = fragment.topicHash;
|
|
assertArgument(isHexString(topics[0], 32) && topics[0].toLowerCase() === eventTopic, "fragment/topic mismatch", "topics[0]", topics[0]);
|
|
topics = topics.slice(1);
|
|
}
|
|
const indexed = [];
|
|
const nonIndexed = [];
|
|
const dynamic = [];
|
|
fragment.inputs.forEach((param, index) => {
|
|
if (param.indexed) {
|
|
if (param.type === "string" || param.type === "bytes" || param.baseType === "tuple" || param.baseType === "array") {
|
|
indexed.push(ParamType.from({ type: "bytes32", name: param.name }));
|
|
dynamic.push(true);
|
|
}
|
|
else {
|
|
indexed.push(param);
|
|
dynamic.push(false);
|
|
}
|
|
}
|
|
else {
|
|
nonIndexed.push(param);
|
|
dynamic.push(false);
|
|
}
|
|
});
|
|
const resultIndexed = (topics != null) ? this.#abiCoder.decode(indexed, concat(topics)) : null;
|
|
const resultNonIndexed = this.#abiCoder.decode(nonIndexed, data, true);
|
|
//const result: (Array<any> & { [ key: string ]: any }) = [ ];
|
|
const values = [];
|
|
const keys = [];
|
|
let nonIndexedIndex = 0, indexedIndex = 0;
|
|
fragment.inputs.forEach((param, index) => {
|
|
let value = null;
|
|
if (param.indexed) {
|
|
if (resultIndexed == null) {
|
|
value = new Indexed(null);
|
|
}
|
|
else if (dynamic[index]) {
|
|
value = new Indexed(resultIndexed[indexedIndex++]);
|
|
}
|
|
else {
|
|
try {
|
|
value = resultIndexed[indexedIndex++];
|
|
}
|
|
catch (error) {
|
|
value = error;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
try {
|
|
value = resultNonIndexed[nonIndexedIndex++];
|
|
}
|
|
catch (error) {
|
|
value = error;
|
|
}
|
|
}
|
|
values.push(value);
|
|
keys.push(param.name || null);
|
|
});
|
|
return Result.fromItems(values, keys);
|
|
}
|
|
/**
|
|
* Parses a transaction, finding the matching function and extracts
|
|
* the parameter values along with other useful function details.
|
|
*
|
|
* If the matching function cannot be found, return null.
|
|
*/
|
|
parseTransaction(tx) {
|
|
const data = getBytes(tx.data, "tx.data");
|
|
const value = getBigInt((tx.value != null) ? tx.value : 0, "tx.value");
|
|
const fragment = this.getFunction(hexlify(data.slice(0, 4)));
|
|
if (!fragment) {
|
|
return null;
|
|
}
|
|
const args = this.#abiCoder.decode(fragment.inputs, data.slice(4));
|
|
return new TransactionDescription(fragment, fragment.selector, args, value);
|
|
}
|
|
parseCallResult(data) {
|
|
throw new Error("@TODO");
|
|
}
|
|
/**
|
|
* Parses a receipt log, finding the matching event and extracts
|
|
* the parameter values along with other useful event details.
|
|
*
|
|
* If the matching event cannot be found, returns null.
|
|
*/
|
|
parseLog(log) {
|
|
const fragment = this.getEvent(log.topics[0]);
|
|
if (!fragment || fragment.anonymous) {
|
|
return null;
|
|
}
|
|
// @TODO: If anonymous, and the only method, and the input count matches, should we parse?
|
|
// Probably not, because just because it is the only event in the ABI does
|
|
// not mean we have the full ABI; maybe just a fragment?
|
|
return new LogDescription(fragment, fragment.topicHash, this.decodeEventLog(fragment, log.data, log.topics));
|
|
}
|
|
/**
|
|
* Parses a revert data, finding the matching error and extracts
|
|
* the parameter values along with other useful error details.
|
|
*
|
|
* If the matching event cannot be found, returns null.
|
|
*/
|
|
parseError(data) {
|
|
const hexData = hexlify(data);
|
|
const fragment = this.getError(dataSlice(hexData, 0, 4));
|
|
if (!fragment) {
|
|
return null;
|
|
}
|
|
const args = this.#abiCoder.decode(fragment.inputs, dataSlice(hexData, 4));
|
|
return new ErrorDescription(fragment, fragment.selector, args);
|
|
}
|
|
/**
|
|
* Creates a new [[Interface]] from the ABI %%value%%.
|
|
*
|
|
* The %%value%% may be provided as an existing [[Interface]] object,
|
|
* a JSON-encoded ABI or any Human-Readable ABI format.
|
|
*/
|
|
static from(value) {
|
|
// Already an Interface, which is immutable
|
|
if (value instanceof Interface) {
|
|
return value;
|
|
}
|
|
// JSON
|
|
if (typeof (value) === "string") {
|
|
return new Interface(JSON.parse(value));
|
|
}
|
|
// Maybe an interface from an older version, or from a symlinked copy
|
|
if (typeof (value.format) === "function") {
|
|
return new Interface(value.format("json"));
|
|
}
|
|
// Array of fragments
|
|
return new Interface(value);
|
|
}
|
|
}
|
|
//# sourceMappingURL=interface.js.map
|