/*
 * Copyright (C) 2017, David PHAM-VAN <dev.nfet.net@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import 'dart:typed_data';

import 'package:meta/meta.dart';

import 'object_base.dart';
import 'stream.dart';

const kIndentSize = 2;

abstract class PdfDataType {
  const PdfDataType();

  void output(PdfObjectBase o, PdfStream s, [int? indent]);

  PdfStream _toStream([int? indent]) {
    final s = PdfStream();
    output(
      PdfObjectBase(
        objser: 0,
        params: this,
        settings: const PdfSettings(),
      ),
      s,
      indent,
    );
    return s;
  }

  @override
  String toString([int? indent]) {
    return String.fromCharCodes(_toStream(indent).output());
  }

  @visibleForTesting
  Uint8List toList() {
    return _toStream().output();
  }
}