ethers.js/src.ts/abi/coders/null.ts
2022-11-27 21:54:49 -05:00

29 lines
603 B
TypeScript

import { Coder } from "./abstract-coder.js";
import type { Reader, Writer } from "./abstract-coder.js";
const Empty = new Uint8Array([ ]);
/**
* @_ignore
*/
export class NullCoder extends Coder {
constructor(localName: string) {
super("null", "", localName, false);
}
defaultValue(): null {
return null;
}
encode(writer: Writer, value: any): number {
if (value != null) { this._throwError("not null", value); }
return writer.writeBytes(Empty);
}
decode(reader: Reader): any {
reader.readBytes(0);
return null;
}
}