console-app/lib/Sources/OptionSource.ts

/*
 * Copyright (C) Sapphirecode - All Rights Reserved
 * This file is part of console-app which is released under MIT.
 * See file 'LICENSE' for full license details.
 * Created by Timo Hocker <timo@scode.ovh>, May 2020
 */

import { ErrorCallback } from '../ErrorCallback';
import { OptionValue, Option } from '../Option';

export abstract class OptionSource {
  public abstract async parse(opt: Option, value: OptionValue): Promise<void>;

  protected error_callback?: ErrorCallback;

  public constructor (error_callback?: ErrorCallback) {
    this.error_callback = error_callback;
  }

  protected async assign_arg (
    opt: Option,
    val: OptionValue,
    value: unknown
  ): Promise<void> {
    try {
      val.value = await val.type_validation.to_type (value);
      val.filled = true;
    }
    catch (e) {
      if (typeof this.error_callback !== 'undefined')
        this.error_callback (opt.name, value, e);
    }
  }
}