79 lines
2.1 KiB
TypeScript
79 lines
2.1 KiB
TypeScript
import { AccountsCoder, Idl } from "@project-serum/anchor";
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import { accountSize, IdlTypeDef } from "../../anchor";
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export class WormholeAccountsCoder<A extends string = string>
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implements AccountsCoder
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{
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constructor(private idl: Idl) {}
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public async encode<T = any>(accountName: A, account: T): Promise<Buffer> {
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switch (accountName) {
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default: {
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throw new Error(`Invalid account name: ${accountName}`);
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}
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}
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}
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public decode<T = any>(accountName: A, ix: Buffer): T {
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return this.decodeUnchecked(accountName, ix);
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}
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public decodeUnchecked<T = any>(accountName: A, ix: Buffer): T {
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switch (accountName) {
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default: {
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throw new Error(`Invalid account name: ${accountName}`);
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}
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}
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}
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public memcmp(accountName: A, _appendData?: Buffer): any {
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switch (accountName) {
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case "postVaa": {
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return {
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dataSize: 56, // + 4 + payload.length
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};
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}
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default: {
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throw new Error(`Invalid account name: ${accountName}`);
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}
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}
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}
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public size(idlAccount: IdlTypeDef): number {
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return accountSize(this.idl, idlAccount) ?? 0;
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}
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}
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export interface PostVAAData {
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version: number;
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guardianSetIndex: number;
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timestamp: number;
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nonce: number;
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emitterChain: number;
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emitterAddress: Buffer;
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sequence: bigint;
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consistencyLevel: number;
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payload: Buffer;
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}
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function encodePostVaaData(account: PostVAAData): Buffer {
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const payload = account.payload;
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const serialized = Buffer.alloc(60 + payload.length);
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serialized.writeUInt8(account.version, 0);
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serialized.writeUInt32LE(account.guardianSetIndex, 1);
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serialized.writeUInt32LE(account.timestamp, 5);
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serialized.writeUInt32LE(account.nonce, 9);
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serialized.writeUInt16LE(account.emitterChain, 13);
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serialized.write(account.emitterAddress.toString("hex"), 15, "hex");
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serialized.writeBigUInt64LE(account.sequence, 47);
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serialized.writeUInt8(account.consistencyLevel, 55);
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serialized.writeUInt32LE(payload.length, 56);
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serialized.write(payload.toString("hex"), 60, "hex");
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return serialized;
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}
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function decodePostVaaAccount<T = any>(buf: Buffer): T {
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return {} as T;
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}
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