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// from EtherscanProvider
import {
Block, Log, TransactionReceipt, TransactionResponse
} from "../providers/provider.js";
import { defineProperties, EventPayload } from "../utils/index.js";
import type { EventFragment, Interface, Result } from "../abi/index.js";
import type { Listener } from "../utils/index.js";
import type {
Provider
} from "../providers/index.js";
import type { BaseContract } from "./contract.js";
import type { ContractEventName } from "./types.js";
/**
* An **EventLog** contains additional properties parsed from the [[Log]].
*/
export class EventLog extends Log {
/**
* The Contract Interface.
*/
readonly interface!: Interface;
/**
* The matching event.
*/
readonly fragment!: EventFragment;
/**
* The parsed arguments passed to the event by ``emit``.
*/
readonly args!: Result;
/**
* @_ignore:
*/
constructor(log: Log, iface: Interface, fragment: EventFragment) {
super(log, log.provider);
const args = iface.decodeEventLog(fragment, log.data, log.topics);
defineProperties<EventLog>(this, { args, fragment, interface: iface });
}
/**
* The name of the event.
*/
get eventName(): string { return this.fragment.name; }
/**
* The signature of the event.
*/
get eventSignature(): string { return this.fragment.format(); }
}
/**
* An **EventLog** contains additional properties parsed from the [[Log]].
*/
export class UndecodedEventLog extends Log {
/**
* The error encounted when trying to decode the log.
*/
readonly error!: Error;
/**
* @_ignore:
*/
constructor(log: Log, error: Error) {
super(log, log.provider);
defineProperties<UndecodedEventLog>(this, { error });
}
}
/**
* A **ContractTransactionReceipt** includes the parsed logs from a
* [[TransactionReceipt]].
*/
export class ContractTransactionReceipt extends TransactionReceipt {
readonly #iface: Interface;
/**
* @_ignore:
*/
constructor(iface: Interface, provider: Provider, tx: TransactionReceipt) {
super(tx, provider);
this.#iface = iface;
}
/**
* The parsed logs for any [[Log]] which has a matching event in the
* Contract ABI.
*/
get logs(): Array<EventLog | Log> {
return super.logs.map((log) => {
const fragment = log.topics.length ? this.#iface.getEvent(log.topics[0]): null;
if (fragment) {
try {
return new EventLog(log, this.#iface, fragment)
} catch (error: any) {
return new UndecodedEventLog(log, error);
}
}
return log;
});
}
}
/**
* A **ContractTransactionResponse** will return a
* [[ContractTransactionReceipt]] when waited on.
*/
export class ContractTransactionResponse extends TransactionResponse {
readonly #iface: Interface;
/**
* @_ignore:
*/
constructor(iface: Interface, provider: Provider, tx: TransactionResponse) {
super(tx, provider);
this.#iface = iface;
}
/**
* Resolves once this transaction has been mined and has
* %%confirms%% blocks including it (default: ``1``) with an
* optional %%timeout%%.
*
* This can resolve to ``null`` only if %%confirms%% is ``0``
* and the transaction has not been mined, otherwise this will
* wait until enough confirmations have completed.
*/
async wait(confirms?: number, timeout?: number): Promise<null | ContractTransactionReceipt> {
const receipt = await super.wait(confirms, timeout);
if (receipt == null) { return null; }
return new ContractTransactionReceipt(this.#iface, this.provider, receipt);
}
}
/**
* A **ContractUnknownEventPayload** is included as the last parameter to
* Contract Events when the event does not match any events in the ABI.
*/
export class ContractUnknownEventPayload extends EventPayload<ContractEventName> {
/**
* The log with no matching events.
*/
readonly log!: Log;
/**
* @_event:
*/
constructor(contract: BaseContract, listener: null | Listener, filter: ContractEventName, log: Log) {
super(contract, listener, filter);
defineProperties<ContractUnknownEventPayload>(this, { log });
}
/**
* Resolves to the block the event occured in.
*/
async getBlock(): Promise<Block> {
return await this.log.getBlock();
}
/**
* Resolves to the transaction the event occured in.
*/
async getTransaction(): Promise<TransactionResponse> {
return await this.log.getTransaction();
}
/**
* Resolves to the transaction receipt the event occured in.
*/
async getTransactionReceipt(): Promise<TransactionReceipt> {
return await this.log.getTransactionReceipt();
}
}
/**
* A **ContractEventPayload** is included as the last parameter to
* Contract Events when the event is known.
*/
export class ContractEventPayload extends ContractUnknownEventPayload {
/**
* The matching event.
*/
declare readonly fragment: EventFragment;
/**
* The log, with parsed properties.
*/
declare readonly log: EventLog;
/**
* The parsed arguments passed to the event by ``emit``.
*/
declare readonly args: Result;
/**
* @_ignore:
*/
constructor(contract: BaseContract, listener: null | Listener, filter: ContractEventName, fragment: EventFragment, _log: Log) {
super(contract, listener, filter, new EventLog(_log, contract.interface, fragment));
const args = contract.interface.decodeEventLog(fragment, this.log.data, this.log.topics);
defineProperties<ContractEventPayload>(this, { args, fragment });
}
/**
* The event name.
*/
get eventName(): string {
return this.fragment.name;
}
/**
* The event signature.
*/
get eventSignature(): string {
return this.fragment.format();
}
}
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