lazy

Takes a function that just returns a parser (a thunk). This defers the evaluation of the given parser. Useful for writing recursive parsers.

Available since: v1.0.0-alpha.3

Type declaration

const lazy: (parserThunk: () => Parser, name?: string) => Parser;

Example

In this example we are going to define a parser before it’s declaration.

import { lazy, string } from "rudus";

const parser = lazy(() => helloParser));

const helloParser = string("Hello");

const result = parser.run(`Hello`);

The result of the parser above will be:

{
  "input": "Hello",
  "isError": false,
  "offset": 5,
  "result": "Hello"
}