906 lines
34 KiB
TypeScript
906 lines
34 KiB
TypeScript
import { concat, dataSlice, hexlify, zeroPadValue, isHexString } from "../utils/data.js";
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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 { logger } from "../utils/logger.js";
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import { defineProperties } from "../utils/properties.js";
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import { toHex } from "../utils/maths.js";
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import { AbiCoder, defaultAbiCoder } from "./abi-coder.js";
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import { checkResultErrors, Result } from "./coders/abstract-coder.js";
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import { ConstructorFragment, ErrorFragment, EventFragment, FormatType, Fragment, FunctionFragment, ParamType } from "./fragments.js";
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import { Typed } from "./typed.js";
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import type { BigNumberish, BytesLike } from "../utils/index.js";
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import type { JsonFragment } from "./fragments.js";
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export { checkResultErrors, Result };
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export class LogDescription {
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readonly fragment!: EventFragment;
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readonly name!: string;
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readonly signature!: string;
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readonly topic!: string;
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readonly args!: Result
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constructor(fragment: EventFragment, topic: string, args: Result) {
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const name = fragment.name, signature = fragment.format();
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defineProperties<LogDescription>(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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readonly fragment!: FunctionFragment;
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readonly name!: string;
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readonly args!: Result;
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readonly signature!: string;
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readonly selector!: string;
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readonly value!: bigint;
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constructor(fragment: FunctionFragment, selector: string, args: Result, value: bigint) {
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const name = fragment.name, signature = fragment.format();
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defineProperties<TransactionDescription>(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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readonly fragment!: ErrorFragment;
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readonly name!: string;
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readonly args!: Result;
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readonly signature!: string;
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readonly selector!: string;
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constructor(fragment: ErrorFragment, selector: string, args: Result) {
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const name = fragment.name, signature = fragment.format();
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defineProperties<ErrorDescription>(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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readonly hash!: null | string;
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readonly _isIndexed!: boolean;
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static isIndexed(value: any): value is Indexed {
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return !!(value && value._isIndexed);
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}
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constructor(hash: null | string) {
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defineProperties<Indexed>(this, { hash, _isIndexed: true })
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}
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}
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type ErrorInfo = {
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signature: string,
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inputs: Array<string>,
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name: string,
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reason: (...args: Array<any>) => string;
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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: Record<string, string> = {
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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: Record<string, ErrorInfo> = {
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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: string) => {
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return `reverted with reason string ${ JSON.stringify(message) }`;
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}
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},
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"0x4e487b71": {
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signature: "Panic(uint256)",
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name: "Panic",
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inputs: [ "uint256" ],
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reason: (code: bigint) => {
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let reason = "unknown panic code";
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if (code >= 0 && code <= 0xff && PanicReasons[code.toString()]) {
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reason = PanicReasons[code.toString()];
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}
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return `reverted with panic code 0x${ code.toString(16) } (${ reason })`;
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}
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}
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}
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/*
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function wrapAccessError(property: string, error: Error): Error {
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const wrap = new Error(`deferred error during ABI decoding triggered accessing ${ property }`);
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(<any>wrap).error = error;
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return wrap;
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}
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*/
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/*
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function checkNames(fragment: Fragment, type: "input" | "output", params: Array<ParamType>): void {
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params.reduce((accum, param) => {
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if (param.name) {
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if (accum[param.name]) {
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logger.throwArgumentError(`duplicate ${ type } parameter ${ JSON.stringify(param.name) } in ${ fragment.format("full") }`, "fragment", fragment);
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}
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accum[param.name] = true;
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}
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return accum;
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}, <{ [ name: string ]: boolean }>{ });
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}
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*/
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//export type AbiCoder = any;
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//const defaultAbiCoder: AbiCoder = { };
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export type InterfaceAbi = string | ReadonlyArray<Fragment | JsonFragment | string>;
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export class Interface {
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readonly fragments!: ReadonlyArray<Fragment>;
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readonly deploy!: ConstructorFragment;
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#errors: Map<string, ErrorFragment>;
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#events: Map<string, EventFragment>;
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#functions: Map<string, FunctionFragment>;
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// #structs: Map<string, StructFragment>;
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#abiCoder: AbiCoder;
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constructor(fragments: InterfaceAbi) {
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let abi: ReadonlyArray<Fragment | JsonFragment | string> = [ ];
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if (typeof(fragments) === "string") {
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abi = JSON.parse(fragments);
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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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defineProperties<Interface>(this, {
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fragments: Object.freeze(abi.map((f) => Fragment.from(f)).filter((f) => (f != null))),
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});
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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) => {
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let bucket: Map<string, Fragment>;
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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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//checkNames(fragment, "input", fragment.inputs);
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defineProperties<Interface>(this, { deploy: <ConstructorFragment>fragment });
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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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const signature = fragment.format();
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if (bucket.has(signature)) {
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logger.warn("duplicate definition - " + 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<Interface>(this, {
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deploy: ConstructorFragment.fromString("constructor()")
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});
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}
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}
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// @TODO: multi sig?
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format(format?: FormatType): string | Array<string> {
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if (!format) { format = FormatType.full; }
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if (format === FormatType.sighash) {
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logger.throwArgumentError("interface does not support formatting sighash", "format", format);
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}
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const abi = this.fragments.map((f) => f.format(format));
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// We need to re-bundle the JSON fragments a bit
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if (format === FormatType.json) {
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return JSON.stringify(abi.map((j) => JSON.parse(j)));
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}
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return abi;
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}
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getAbiCoder(): AbiCoder {
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return defaultAbiCoder;
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}
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//static getAddress(address: string): string {
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// return getAddress(address);
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//}
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//static getSelector(fragment: ErrorFragment | FunctionFragment): string {
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// return dataSlice(id(fragment.format()), 0, 4);
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//}
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//static getEventTopic(eventFragment: EventFragment): string {
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// return 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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#getFunction(key: string, values: null | Array<any | Typed>, forceUnique: boolean): FunctionFragment {
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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 === this.getSelector(fragment)) { return fragment; }
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}
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logger.throwArgumentError("no matching function", "selector", key);
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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: Array<FunctionFragment> = [ ];
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for (const [ name, fragment ] of this.#functions) {
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if (name.split("("/* fix:) */)[0] === key) { matching.push(fragment); }
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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])) { continue; }
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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") { continue; }
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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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logger.throwArgumentError("no matching function", "name", key);
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} else if (matching.length > 1 && forceUnique) {
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const matchStr = matching.map((m) => JSON.stringify(m.format())).join(", ");
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logger.throwArgumentError(`multiple matching functions (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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const result = this.#functions.get(FunctionFragment.fromString(key).format());
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if (result) { return result; }
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return logger.throwArgumentError("no matching function", "signature", key);
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}
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getFunctionName(key: string): string {
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return (this.#getFunction(key, null, false)).name;
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}
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getFunction(key: string, values?: Array<any | Typed>): FunctionFragment {
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return this.#getFunction(key, values || null, true)
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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: string, values: null | Array<null | any | Typed>, forceUnique: boolean): EventFragment {
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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 === this.getEventTopic(fragment)) { return fragment; }
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}
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logger.throwArgumentError("no matching event", "eventTopic", key);
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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) { matching.push(fragment); }
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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])) { continue; }
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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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logger.throwArgumentError("no matching event", "name", key);
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} else if (matching.length > 1 && forceUnique) {
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// @TODO: refine by Typed
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logger.throwArgumentError("multiple matching events", "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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const result = this.#events.get(EventFragment.fromString(key).format());
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if (result) { return result; }
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return logger.throwArgumentError("no matching event", "signature", key);
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}
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getEventName(key: string): string {
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return (this.#getEvent(key, null, false)).name;
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}
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getEvent(key: string, values?: Array<any | Typed>): EventFragment {
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return this.#getEvent(key, values || null, true)
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}
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// Find a function definition by any means necessary (unless it is ambiguous)
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getError(key: string, values?: Array<any | Typed>): ErrorFragment {
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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.fromString(BuiltinErrors[selector].signature);
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}
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for (const fragment of this.#errors.values()) {
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if (selector === this.getSelector(fragment)) { return fragment; }
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}
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logger.throwArgumentError("no matching error", "selector", key);
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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) { matching.push(fragment); }
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}
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if (matching.length === 0) {
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if (key === "Error") { return ErrorFragment.fromString("error Error(string)"); }
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if (key === "Panic") { return ErrorFragment.fromString("error Panic(uint256)"); }
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logger.throwArgumentError("no matching error", "name", key);
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} else if (matching.length > 1) {
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// @TODO: refine by Typed
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logger.throwArgumentError("multiple matching errors", "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.fromString(key).format()
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if (key === "Error(string)") { return ErrorFragment.fromString("error Error(string)"); }
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if (key === "Panic(uint256)") { return ErrorFragment.fromString("error Panic(uint256)"); }
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const result = this.#errors.get(key);
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if (result) { return result; }
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return logger.throwArgumentError("no matching error", "signature", key);
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}
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// Get the 4-byte selector used by Solidity to identify a function
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getSelector(fragment: ErrorFragment | FunctionFragment): string {
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/*
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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 (_) { }
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if (matches.length === 0) {
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logger.throwArgumentError("unknown fragment", "key", fragment);
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} else if (matches.length > 1) {
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logger.throwArgumentError("ambiguous fragment matches function and error", "key", fragment);
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}
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fragment = matches[0];
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}
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*/
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return dataSlice(id(fragment.format()), 0, 4);
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}
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// Get the 32-byte topic hash used by Solidity to identify an event
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getEventTopic(fragment: EventFragment): string {
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//if (typeof(fragment) === "string") { fragment = this.getEvent(eventFragment); }
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return id(fragment.format());
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}
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_decodeParams(params: ReadonlyArray<ParamType>, data: BytesLike): Result {
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return this.#abiCoder.decode(params, data)
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}
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_encodeParams(params: ReadonlyArray<ParamType>, values: ReadonlyArray<any>): string {
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return this.#abiCoder.encode(params, values)
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}
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encodeDeploy(values?: ReadonlyArray<any>): string {
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return this._encodeParams(this.deploy.inputs, values || [ ]);
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}
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decodeErrorResult(fragment: ErrorFragment | string, data: BytesLike): Result {
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if (typeof(fragment) === "string") { fragment = this.getError(fragment); }
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if (dataSlice(data, 0, 4) !== this.getSelector(fragment)) {
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logger.throwArgumentError(`data signature does not match error ${ fragment.name }.`, "data", data);
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}
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return this._decodeParams(fragment.inputs, dataSlice(data, 4));
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}
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encodeErrorResult(fragment: ErrorFragment | string, values?: ReadonlyArray<any>): string {
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if (typeof(fragment) === "string") { fragment = this.getError(fragment); }
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return concat([
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this.getSelector(fragment),
|
|
this._encodeParams(fragment.inputs, values || [ ])
|
|
]);
|
|
}
|
|
|
|
// Decode the data for a function call (e.g. tx.data)
|
|
decodeFunctionData(fragment: FunctionFragment | string, data: BytesLike): Result {
|
|
if (typeof(fragment) === "string") { fragment = this.getFunction(fragment); }
|
|
|
|
if (dataSlice(data, 0, 4) !== this.getSelector(fragment)) {
|
|
logger.throwArgumentError(`data signature does not match function ${ fragment.name }.`, "data", data);
|
|
}
|
|
|
|
return this._decodeParams(fragment.inputs, dataSlice(data, 4));
|
|
}
|
|
|
|
// Encode the data for a function call (e.g. tx.data)
|
|
encodeFunctionData(fragment: FunctionFragment | string, values?: ReadonlyArray<any>): string {
|
|
if (typeof(fragment) === "string") { fragment = this.getFunction(fragment); }
|
|
|
|
return concat([
|
|
this.getSelector(fragment),
|
|
this._encodeParams(fragment.inputs, values || [ ])
|
|
]);
|
|
}
|
|
|
|
// Decode the result from a function call (e.g. from eth_call)
|
|
decodeFunctionResult(fragment: FunctionFragment | string, data: BytesLike): Result {
|
|
if (typeof(fragment) === "string") { fragment = this.getFunction(fragment); }
|
|
|
|
let message = "invalid length for result data";
|
|
|
|
const bytes = logger.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
|
|
return logger.throwError(message, "BAD_DATA", {
|
|
value: hexlify(bytes),
|
|
info: { method: fragment.name, signature: fragment.format() }
|
|
});
|
|
}
|
|
|
|
makeError(fragment: FunctionFragment | string, _data: BytesLike, tx?: { data: string }): Error {
|
|
if (typeof(fragment) === "string") { fragment = this.getFunction(fragment); }
|
|
|
|
const data = logger.getBytes(_data);
|
|
|
|
let args: undefined | Result = undefined;
|
|
if (tx) {
|
|
try {
|
|
args = this.#abiCoder.decode(fragment.inputs, tx.data || "0x");
|
|
} catch (error) { console.log(error); }
|
|
}
|
|
|
|
let errorArgs: undefined | Result = undefined;
|
|
let errorName: undefined | string = undefined;
|
|
let errorSignature: undefined | string = undefined;
|
|
let reason: string = "unknown reason";
|
|
|
|
if (data.length === 0) {
|
|
reason = "missing error reason";
|
|
|
|
} else if ((data.length % 32) === 4) {
|
|
const selector = hexlify(data.slice(0, 4));
|
|
const builtin = BuiltinErrors[selector];
|
|
if (builtin) {
|
|
try {
|
|
errorName = builtin.name;
|
|
errorSignature = builtin.signature;
|
|
errorArgs = this.#abiCoder.decode(builtin.inputs, data.slice(4));
|
|
reason = builtin.reason(...errorArgs);
|
|
} catch (error) {
|
|
console.log(error); // @TODO: remove
|
|
}
|
|
} else {
|
|
reason = "unknown custom error";
|
|
try {
|
|
const error = this.getError(selector);
|
|
errorName = error.name;
|
|
errorSignature = error.format();
|
|
reason = `custom error: ${ errorSignature }`;
|
|
try {
|
|
errorArgs = this.#abiCoder.decode(error.inputs, data.slice(4));
|
|
} catch (error) {
|
|
reason = `custom error: ${ errorSignature } (coult not decode error data)`
|
|
}
|
|
} catch (error) {
|
|
console.log(error); // @TODO: remove
|
|
}
|
|
}
|
|
}
|
|
|
|
return logger.makeError("call revert exception", "CALL_EXCEPTION", {
|
|
data: hexlify(data), transaction: null,
|
|
method: fragment.name, signature: fragment.format(), args,
|
|
errorArgs, errorName, errorSignature, reason
|
|
});
|
|
}
|
|
|
|
// Encode the result for a function call (e.g. for eth_call)
|
|
encodeFunctionResult(functionFragment: FunctionFragment | string, values?: ReadonlyArray<any>): string {
|
|
if (typeof(functionFragment) === "string") {
|
|
functionFragment = this.getFunction(functionFragment);
|
|
}
|
|
|
|
return hexlify(this.#abiCoder.encode(functionFragment.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(eventFragment: EventFragment, values: ReadonlyArray<any>): Array<null | string | Array<string>> {
|
|
if (typeof(eventFragment) === "string") {
|
|
eventFragment = this.getEvent(eventFragment);
|
|
}
|
|
|
|
if (values.length > eventFragment.inputs.length) {
|
|
logger.throwError("too many arguments for " + eventFragment.format(), "UNEXPECTED_ARGUMENT", {
|
|
count: values.length,
|
|
expectedCount: eventFragment.inputs.length
|
|
})
|
|
}
|
|
|
|
const topics: Array<null | string | Array<string>> = [];
|
|
if (!eventFragment.anonymous) { topics.push(this.getEventTopic(eventFragment)); }
|
|
|
|
// @TODO: Use the coders for this; to properly support tuples, etc.
|
|
const encodeTopic = (param: ParamType, value: any): string => {
|
|
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 = toHex(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 = eventFragment.inputs[index];
|
|
|
|
if (!param.indexed) {
|
|
if (value != null) {
|
|
logger.throwArgumentError("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") {
|
|
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));
|
|
}
|
|
});
|
|
|
|
// Trim off trailing nulls
|
|
while (topics.length && topics[topics.length - 1] === null) {
|
|
topics.pop();
|
|
}
|
|
|
|
return topics;
|
|
}
|
|
|
|
encodeEventLog(eventFragment: EventFragment, values: ReadonlyArray<any>): { data: string, topics: Array<string> } {
|
|
if (typeof(eventFragment) === "string") {
|
|
eventFragment = this.getEvent(eventFragment);
|
|
}
|
|
|
|
const topics: Array<string> = [ ];
|
|
|
|
const dataTypes: Array<ParamType> = [ ];
|
|
const dataValues: Array<string> = [ ];
|
|
|
|
if (!eventFragment.anonymous) {
|
|
topics.push(this.getEventTopic(eventFragment));
|
|
}
|
|
|
|
if (values.length !== eventFragment.inputs.length) {
|
|
logger.throwArgumentError("event arguments/values mismatch", "values", values);
|
|
}
|
|
|
|
eventFragment.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(eventFragment: EventFragment | string, data: BytesLike, topics?: ReadonlyArray<string>): Result {
|
|
if (typeof(eventFragment) === "string") {
|
|
eventFragment = this.getEvent(eventFragment);
|
|
}
|
|
|
|
if (topics != null && !eventFragment.anonymous) {
|
|
const eventTopic = this.getEventTopic(eventFragment);
|
|
if (!isHexString(topics[0], 32) || topics[0].toLowerCase() !== eventTopic) {
|
|
logger.throwArgumentError("fragment/topic mismatch", "topics[0]", topics[0]);
|
|
}
|
|
topics = topics.slice(1);
|
|
}
|
|
|
|
const indexed: Array<ParamType> = [];
|
|
const nonIndexed: Array<ParamType> = [];
|
|
const dynamic: Array<boolean> = [];
|
|
|
|
eventFragment.inputs.forEach((param, index) => {
|
|
if (param.indexed) {
|
|
if (param.type === "string" || param.type === "bytes" || param.baseType === "tuple" || param.baseType === "array") {
|
|
indexed.push(ParamType.fromObject({ 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: Array<any> = [ ];
|
|
const keys: Array<null | string> = [ ];
|
|
let nonIndexedIndex = 0, indexedIndex = 0;
|
|
eventFragment.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);
|
|
}
|
|
|
|
// Given a transaction, find the matching function fragment (if any) and
|
|
// determine all its properties and call parameters
|
|
parseTransaction(tx: { data: string, value?: BigNumberish }): null | TransactionDescription {
|
|
const data = logger.getBytes(tx.data, "tx.data");
|
|
const value = logger.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, this.getSelector(fragment), args, value);
|
|
}
|
|
|
|
// @TODO
|
|
//parseCallResult(data: BytesLike): ??
|
|
|
|
// Given an event log, find the matching event fragment (if any) and
|
|
// determine all its properties and values
|
|
parseLog(log: { topics: Array<string>, data: string}): null | LogDescription {
|
|
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, this.getEventTopic(fragment), this.decodeEventLog(fragment, log.data, log.topics));
|
|
}
|
|
|
|
parseError(data: BytesLike): null | ErrorDescription {
|
|
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, this.getSelector(fragment), args);
|
|
}
|
|
|
|
|
|
static from(value: ReadonlyArray<Fragment | string | JsonFragment> | string | Interface) {
|
|
// 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((<any>value).format) === "function") {
|
|
return new Interface((<any>value).format(FormatType.json));
|
|
}
|
|
|
|
// Array of fragments
|
|
return new Interface(value);
|
|
}
|
|
}
|