using System;

namespace System.Text
{
	/// <summary>Provides a failure-handling mechanism, called a fallback, for an encoded input byte sequence that cannot be converted to an output character. </summary>
	/// <filterpriority>2</filterpriority>
	// Token: 0x020005E4 RID: 1508
	[Serializable]
	public abstract class DecoderFallback
	{
		/// <summary>Gets an object that throws an exception when an input byte sequence cannot be decoded.</summary>
		/// <returns>A type derived from the <see cref="T:System.Text.DecoderFallback" /> class. The default value is a <see cref="T:System.Text.DecoderExceptionFallback" /> object.</returns>
		/// <filterpriority>1</filterpriority>
		// Token: 0x17000AB9 RID: 2745
		// (get) Token: 0x060036EC RID: 14060 RVA: 0x000BC7D8 File Offset: 0x000BA9D8
		public static DecoderFallback ExceptionFallback
		{
			get
			{
				return DecoderFallback.exception_fallback;
			}
		}

		/// <summary>When overridden in a derived class, gets the maximum number of characters the current <see cref="T:System.Text.DecoderFallback" /> object can return.</summary>
		/// <returns>The maximum number of characters the current <see cref="T:System.Text.DecoderFallback" /> object can return.</returns>
		/// <filterpriority>2</filterpriority>
		// Token: 0x17000ABA RID: 2746
		// (get) Token: 0x060036ED RID: 14061
		public abstract int MaxCharCount { get; }

		/// <summary>Gets an object that outputs a substitute string in place of an input byte sequence that cannot be decoded.</summary>
		/// <returns>A type derived from the <see cref="T:System.Text.DecoderFallback" /> class. The default value is a <see cref="T:System.Text.DecoderReplacementFallback" /> object that emits the QUESTION MARK character ("?", U+003F) in place of unknown byte sequences. </returns>
		/// <filterpriority>1</filterpriority>
		// Token: 0x17000ABB RID: 2747
		// (get) Token: 0x060036EE RID: 14062 RVA: 0x000BC7E0 File Offset: 0x000BA9E0
		public static DecoderFallback ReplacementFallback
		{
			get
			{
				return DecoderFallback.replacement_fallback;
			}
		}

		// Token: 0x17000ABC RID: 2748
		// (get) Token: 0x060036EF RID: 14063 RVA: 0x000BC7E8 File Offset: 0x000BA9E8
		internal static DecoderFallback StandardSafeFallback
		{
			get
			{
				return DecoderFallback.standard_safe_fallback;
			}
		}

		/// <summary>When overridden in a derived class, initializes a new instance of the <see cref="T:System.Text.DecoderFallbackBuffer" /> class. </summary>
		/// <returns>An object that provides a fallback buffer for a decoder.</returns>
		/// <filterpriority>2</filterpriority>
		// Token: 0x060036F0 RID: 14064
		public abstract DecoderFallbackBuffer CreateFallbackBuffer();

		// Token: 0x0400166C RID: 5740
		private static DecoderFallback exception_fallback = new DecoderExceptionFallback();

		// Token: 0x0400166D RID: 5741
		private static DecoderFallback replacement_fallback = new DecoderReplacementFallback();

		// Token: 0x0400166E RID: 5742
		private static DecoderFallback standard_safe_fallback = new DecoderReplacementFallback("\ufffd");
	}
}