using System;

namespace System.Text
{
	/// <summary>Throws <see cref="T:System.Text.EncoderFallbackException" /> when an input character cannot be converted to an encoded output byte sequence. This class cannot be inherited.</summary>
	/// <filterpriority>2</filterpriority>
	// Token: 0x020005EB RID: 1515
	public sealed class EncoderExceptionFallbackBuffer : EncoderFallbackBuffer
	{
		/// <summary>Gets the number of characters in the current <see cref="T:System.Text.EncoderExceptionFallbackBuffer" /> object that remain to be processed.</summary>
		/// <returns>The return value is always zero.A return value is defined, although it is unchanging, because this method implements an abstract method.</returns>
		/// <filterpriority>1</filterpriority>
		// Token: 0x17000AC6 RID: 2758
		// (get) Token: 0x0600371C RID: 14108 RVA: 0x000BCD44 File Offset: 0x000BAF44
		public override int Remaining
		{
			get
			{
				return 0;
			}
		}

		/// <summary>Throws an exception because the input character cannot be encoded. Parameters specify the value and index position of the character that cannot be converted.</summary>
		/// <returns>None. No value is returned because the <see cref="M:System.Text.EncoderExceptionFallbackBuffer.Fallback(System.Char,System.Int32)" /> method always throws an exception. </returns>
		/// <param name="charUnknown">An input character.</param>
		/// <param name="index">The index position of the character in the input buffer.</param>
		/// <exception cref="T:System.Text.EncoderFallbackException">
		///   <paramref name="charUnknown" /> cannot be encoded. This method always throws an exception that reports the value of the <paramref name="charUnknown" /> and <paramref name="index" /> parameters.</exception>
		/// <filterpriority>1</filterpriority>
		// Token: 0x0600371D RID: 14109 RVA: 0x000BCD48 File Offset: 0x000BAF48
		public override bool Fallback(char charUnknown, int index)
		{
			throw new EncoderFallbackException(charUnknown, index);
		}

		/// <summary>Throws an exception because the input character cannot be encoded. Parameters specify the value and index position of the surrogate pair in the input, and the nominal return value is not used.</summary>
		/// <returns>None. No value is returned because the <see cref="M:System.Text.EncoderExceptionFallbackBuffer.Fallback(System.Char,System.Char,System.Int32)" /> method always throws an exception. </returns>
		/// <param name="charUnknownHigh">The high surrogate of the input pair.</param>
		/// <param name="charUnknownLow">The low surrogate of the input pair.</param>
		/// <param name="index">The index position of the surrogate pair in the input buffer.</param>
		/// <exception cref="T:System.Text.EncoderFallbackException">The character represented by <paramref name="charUnknownHigh" /> and <paramref name="charUnknownLow" /> cannot be encoded.</exception>
		/// <exception cref="T:System.ArgumentOutOfRangeException">Either <paramref name="charUnknownHigh" /> or <paramref name="charUnknownLow" /> is invalid. <paramref name="charUnknownHigh" /> is not between U+D800 and U+DBFF, inclusive, or <paramref name="charUnknownLow" /> is not between U+DC00 and U+DFFF, inclusive.</exception>
		/// <filterpriority>1</filterpriority>
		// Token: 0x0600371E RID: 14110 RVA: 0x000BCD54 File Offset: 0x000BAF54
		public override bool Fallback(char charUnknownHigh, char charUnknownLow, int index)
		{
			throw new EncoderFallbackException(charUnknownHigh, charUnknownLow, index);
		}

		/// <summary>Retrieves the next character in the exception fallback buffer.</summary>
		/// <returns>The return value is always the Unicode character, NULL (U+0000). A return value is defined, although it is unchanging, because this method implements an abstract method.</returns>
		/// <filterpriority>2</filterpriority>
		// Token: 0x0600371F RID: 14111 RVA: 0x000BCD60 File Offset: 0x000BAF60
		public override char GetNextChar()
		{
			return '\0';
		}

		/// <summary>Causes the next call to the <see cref="M:System.Text.EncoderExceptionFallbackBuffer.GetNextChar" /> method to access the exception data buffer character position that is prior to the current position.</summary>
		/// <returns>The return value is always false.A return value is defined, although it is unchanging, because this method implements an abstract method.</returns>
		/// <filterpriority>1</filterpriority>
		// Token: 0x06003720 RID: 14112 RVA: 0x000BCD64 File Offset: 0x000BAF64
		public override bool MovePrevious()
		{
			return false;
		}
	}
}