@btc-vision/btc-runtime/runtime/events/predefined/ApproveEvent.ts

Bitcoin Smart Contract Runtime

import { u256 } from '@btc-vision/as-bignum/assembly';
import { BytesWriter } from '../../buffer/BytesWriter';
import { Address } from '../../types/Address';
import { ADDRESS_BYTE_LENGTH, U256_BYTE_LENGTH } from '../../utils/lengths';
import { NetEvent } from '../NetEvent';

@final
export class ApproveEvent extends NetEvent {
    constructor(owner: Address, spender: Address, value: u256) {
        const data: BytesWriter = new BytesWriter(ADDRESS_BYTE_LENGTH * 2 + U256_BYTE_LENGTH);
        data.writeAddress(owner);
        data.writeAddress(spender);
        data.writeU256(value);

        super('Approve', data);
    }
}