| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System.Diagnostics.CodeAnalysis; |
| | | 5 | | using System.Runtime.CompilerServices; |
| | | 6 | | using System.Runtime.Serialization; |
| | | 7 | | |
| | | 8 | | namespace System.Text |
| | | 9 | | { |
| | | 10 | | public sealed class EncoderExceptionFallback : EncoderFallback |
| | | 11 | | { |
| | | 12 | | internal static readonly EncoderExceptionFallback s_default = new EncoderExceptionFallback(); |
| | | 13 | | |
| | | 14 | | // Construction |
| | | 15 | | public EncoderExceptionFallback() |
| | | 16 | | { |
| | | 17 | | } |
| | | 18 | | |
| | | 19 | | public override EncoderFallbackBuffer CreateFallbackBuffer() => |
| | | 20 | | new EncoderExceptionFallbackBuffer(); |
| | | 21 | | |
| | | 22 | | // Maximum number of characters that this instance of this fallback could return |
| | | 23 | | public override int MaxCharCount => 0; |
| | | 24 | | |
| | | 25 | | public override bool Equals([NotNullWhen(true)] object? value) => |
| | | 26 | | value is EncoderExceptionFallback; |
| | | 27 | | |
| | | 28 | | public override int GetHashCode() => 654; |
| | | 29 | | } |
| | | 30 | | |
| | | 31 | | |
| | | 32 | | public sealed class EncoderExceptionFallbackBuffer : EncoderFallbackBuffer |
| | | 33 | | { |
| | 0 | 34 | | public EncoderExceptionFallbackBuffer() { } |
| | | 35 | | public override bool Fallback(char charUnknown, int index) |
| | | 36 | | { |
| | | 37 | | // Fall back our char |
| | 0 | 38 | | throw new EncoderFallbackException( |
| | 0 | 39 | | SR.Format(SR.Argument_InvalidCodePageConversionIndex, (int)charUnknown, index), charUnknown, index); |
| | | 40 | | } |
| | | 41 | | |
| | | 42 | | public override bool Fallback(char charUnknownHigh, char charUnknownLow, int index) |
| | | 43 | | { |
| | 0 | 44 | | if (!char.IsHighSurrogate(charUnknownHigh)) |
| | | 45 | | { |
| | 0 | 46 | | throw new ArgumentOutOfRangeException(nameof(charUnknownHigh), |
| | 0 | 47 | | SR.Format(SR.ArgumentOutOfRange_Range, 0xD800, 0xDBFF)); |
| | | 48 | | } |
| | 0 | 49 | | if (!char.IsLowSurrogate(charUnknownLow)) |
| | | 50 | | { |
| | 0 | 51 | | throw new ArgumentOutOfRangeException(nameof(charUnknownLow), |
| | 0 | 52 | | SR.Format(SR.ArgumentOutOfRange_Range, 0xDC00, 0xDFFF)); |
| | | 53 | | } |
| | | 54 | | |
| | 0 | 55 | | int iTemp = char.ConvertToUtf32(charUnknownHigh, charUnknownLow); |
| | | 56 | | |
| | | 57 | | // Fall back our char |
| | 0 | 58 | | throw new EncoderFallbackException( |
| | 0 | 59 | | SR.Format(SR.Argument_InvalidCodePageConversionIndex, iTemp, index), charUnknownHigh, charUnknownLow, in |
| | | 60 | | } |
| | | 61 | | |
| | 0 | 62 | | public override char GetNextChar() => (char)0; |
| | | 63 | | |
| | | 64 | | // Exception fallback doesn't have anywhere to back up to. |
| | 0 | 65 | | public override bool MovePrevious() => false; |
| | | 66 | | |
| | | 67 | | // Exceptions are always empty |
| | 0 | 68 | | public override int Remaining => 0; |
| | | 69 | | } |
| | | 70 | | |
| | | 71 | | [Serializable] |
| | | 72 | | [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")] |
| | | 73 | | public sealed class EncoderFallbackException : ArgumentException |
| | | 74 | | { |
| | | 75 | | private readonly char _charUnknown; |
| | | 76 | | private readonly char _charUnknownHigh; |
| | | 77 | | private readonly char _charUnknownLow; |
| | | 78 | | private readonly int _index; |
| | | 79 | | |
| | | 80 | | public EncoderFallbackException() |
| | | 81 | | : base(SR.Arg_ArgumentException) |
| | | 82 | | { |
| | | 83 | | HResult = HResults.COR_E_ARGUMENT; |
| | | 84 | | } |
| | | 85 | | |
| | | 86 | | public EncoderFallbackException(string? message) |
| | | 87 | | : base(message) |
| | | 88 | | { |
| | | 89 | | HResult = HResults.COR_E_ARGUMENT; |
| | | 90 | | } |
| | | 91 | | |
| | | 92 | | public EncoderFallbackException(string? message, Exception? innerException) |
| | | 93 | | : base(message, innerException) |
| | | 94 | | { |
| | | 95 | | HResult = HResults.COR_E_ARGUMENT; |
| | | 96 | | } |
| | | 97 | | |
| | | 98 | | internal EncoderFallbackException( |
| | | 99 | | string? message, char charUnknown, int index) : base(message) |
| | | 100 | | { |
| | | 101 | | _charUnknown = charUnknown; |
| | | 102 | | _index = index; |
| | | 103 | | } |
| | | 104 | | |
| | | 105 | | internal EncoderFallbackException( |
| | | 106 | | string message, char charUnknownHigh, char charUnknownLow, int index) : base(message) |
| | | 107 | | { |
| | | 108 | | if (!char.IsHighSurrogate(charUnknownHigh)) |
| | | 109 | | { |
| | | 110 | | throw new ArgumentOutOfRangeException(nameof(charUnknownHigh), |
| | | 111 | | SR.Format(SR.ArgumentOutOfRange_Range, 0xD800, 0xDBFF)); |
| | | 112 | | } |
| | | 113 | | if (!char.IsLowSurrogate(charUnknownLow)) |
| | | 114 | | { |
| | | 115 | | throw new ArgumentOutOfRangeException(nameof(CharUnknownLow), |
| | | 116 | | SR.Format(SR.ArgumentOutOfRange_Range, 0xDC00, 0xDFFF)); |
| | | 117 | | } |
| | | 118 | | |
| | | 119 | | _charUnknownHigh = charUnknownHigh; |
| | | 120 | | _charUnknownLow = charUnknownLow; |
| | | 121 | | _index = index; |
| | | 122 | | } |
| | | 123 | | |
| | | 124 | | [Obsolete(Obsoletions.LegacyFormatterImplMessage, DiagnosticId = Obsoletions.LegacyFormatterImplDiagId, UrlForma |
| | | 125 | | private EncoderFallbackException(SerializationInfo serializationInfo, StreamingContext streamingContext) |
| | | 126 | | : base(serializationInfo, streamingContext) |
| | | 127 | | { |
| | | 128 | | } |
| | | 129 | | |
| | | 130 | | public char CharUnknown => _charUnknown; |
| | | 131 | | |
| | | 132 | | public char CharUnknownHigh => _charUnknownHigh; |
| | | 133 | | |
| | | 134 | | public char CharUnknownLow => _charUnknownLow; |
| | | 135 | | |
| | | 136 | | public int Index => _index; |
| | | 137 | | |
| | | 138 | | // Return true if the unknown character is a surrogate pair. |
| | | 139 | | public bool IsUnknownSurrogate() => _charUnknownHigh != '\0'; |
| | | 140 | | } |
| | | 141 | | } |
| | | 142 | | |