| | | 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 | | // See the LICENSE file in the project root for more information. |
| | | 4 | | |
| | | 5 | | using System.Runtime.CompilerServices; |
| | | 6 | | |
| | | 7 | | namespace System.Buffers.Text |
| | | 8 | | { |
| | | 9 | | internal static class ParserHelpers |
| | | 10 | | { |
| | | 11 | | public const int ByteOverflowLength = 3; |
| | | 12 | | public const int ByteOverflowLengthHex = 2; |
| | | 13 | | public const int UInt16OverflowLength = 5; |
| | | 14 | | public const int UInt16OverflowLengthHex = 4; |
| | | 15 | | public const int UInt32OverflowLength = 10; |
| | | 16 | | public const int UInt32OverflowLengthHex = 8; |
| | | 17 | | public const int UInt64OverflowLength = 20; |
| | | 18 | | public const int UInt64OverflowLengthHex = 16; |
| | | 19 | | |
| | | 20 | | public const int SByteOverflowLength = 3; |
| | | 21 | | public const int SByteOverflowLengthHex = 2; |
| | | 22 | | public const int Int16OverflowLength = 5; |
| | | 23 | | public const int Int16OverflowLengthHex = 4; |
| | | 24 | | public const int Int32OverflowLength = 10; |
| | | 25 | | public const int Int32OverflowLengthHex = 8; |
| | | 26 | | public const int Int64OverflowLength = 19; |
| | | 27 | | public const int Int64OverflowLengthHex = 16; |
| | | 28 | | |
| | 1 | 29 | | public static readonly byte[] s_hexLookup = |
| | 1 | 30 | | { |
| | 1 | 31 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 32 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 33 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 34 | | 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 35 | | 0xFF, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 36 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 37 | | 0xFF, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 38 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 39 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 40 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 41 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 42 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 43 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 44 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 45 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | 1 | 46 | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF |
| | 1 | 47 | | }; |
| | | 48 | | |
| | | 49 | | [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| | | 50 | | public static bool IsDigit(int i) |
| | 1 | 51 | | { |
| | 1 | 52 | | return (uint)(i - '0') <= ('9' - '0'); |
| | 1 | 53 | | } |
| | | 54 | | } |
| | | 55 | | } |