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// <auto-generated/>
#nullable enable
#pragma warning disable CS0162 // Unreachable code
#pragma warning disable CS0164 // Unreferenced label
#pragma warning disable CS0219 // Variable assigned but never used
namespace System.Text.Json
{
partial class JsonHelpers
{
/// <remarks>
/// Pattern:<br/>
/// <code>^\s*(?:\+|\-)?[0-9]+\s*$</code><br/>
/// Explanation:<br/>
/// <code>
/// ○ Match if at the beginning of the string.<br/>
/// ○ Match a whitespace character atomically any number of times.<br/>
/// ○ Match a character in the set [+\-] atomically, optionally.<br/>
/// ○ Match a character in the set [0-9] atomically at least once.<br/>
/// ○ Match a whitespace character greedily any number of times.<br/>
/// ○ Match if at the end of the string or if before an ending newline.<br/>
/// </code>
/// </remarks>
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Text.RegularExpressions.Generator", "42.42.42.42")]
public static partial global::System.Text.RegularExpressions.Regex IntegerRegex => global::System.Text.RegularExpressions.Generated.IntegerRegex_0.Instance;
}
}
namespace System.Text.RegularExpressions.Generated
{
using System;
using System.Buffers;
using System.CodeDom.Compiler;
using System.Collections;
using System.ComponentModel;
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Text.RegularExpressions;
using System.Threading;
/// <summary>Custom <see cref="Regex"/>-derived type for the IntegerRegex method.</summary>
[GeneratedCodeAttribute("System.Text.RegularExpressions.Generator", "42.42.42.42")]
[SkipLocalsInit]
file sealed class IntegerRegex_0 : Regex
{
/// <summary>Cached, thread-safe singleton instance.</summary>
internal static readonly IntegerRegex_0 Instance = new();
/// <summary>Initializes the instance.</summary>
private IntegerRegex_0()
{
base.pattern = "^\\s*(?:\\+|\\-)?[0-9]+\\s*$";
base.roptions = RegexOptions.None;
base.internalMatchTimeout = TimeSpan.FromMilliseconds(200);
base.factory = new RunnerFactory();
base.capsize = 1;
}
/// <summary>Provides a factory for creating <see cref="RegexRunner"/> instances to be used by methods on <see cref="Regex"/>.</summary>
private sealed class RunnerFactory : RegexRunnerFactory
{
/// <summary>Creates an instance of a <see cref="RegexRunner"/> used by methods on <see cref="Regex"/>.</summary>
protected override RegexRunner CreateInstance() => new Runner();
/// <summary>Provides the runner that contains the custom logic implementing the specified regular expression.</summary>
private sealed class Runner : RegexRunner
{
/// <summary>Scan the <paramref name="inputSpan"/> starting from base.runtextstart for the next match.</summary>
/// <param name="inputSpan">The text being scanned by the regular expression.</param>
protected override void Scan(ReadOnlySpan<char> inputSpan)
{
// The pattern is anchored. Validate the current position and try to match at it only.
if (TryFindNextPossibleStartingPosition(inputSpan) && !TryMatchAtCurrentPosition(inputSpan))
{
base.runtextpos = inputSpan.Length;
}
}
/// <summary>Search <paramref name="inputSpan"/> starting from base.runtextpos for the next location a match could possibly start.</summary>
/// <param name="inputSpan">The text being scanned by the regular expression.</param>
/// <returns>true if a possible match was found; false if no more matches are possible.</returns>
private bool TryFindNextPossibleStartingPosition(ReadOnlySpan<char> inputSpan)
{
int pos = base.runtextpos;
// Empty matches aren't possible.
if ((uint)pos < (uint)inputSpan.Length)
{
// The pattern leads with a beginning (\A) anchor.
if (pos == 0)
{
return true;
}
}
// No match found.
base.runtextpos = inputSpan.Length;
return false;
}
/// <summary>Determine whether <paramref name="inputSpan"/> at base.runtextpos is a match for the regular expression.</summary>
/// <param name="inputSpan">The text being scanned by the regular expression.</param>
/// <returns>true if the regular expression matches at the current position; otherwise, false.</returns>
private bool TryMatchAtCurrentPosition(ReadOnlySpan<char> inputSpan)
{
int pos = base.runtextpos;
int matchStart = pos;
char ch;
int charloop_starting_pos = 0, charloop_ending_pos = 0;
ReadOnlySpan<char> slice = inputSpan.Slice(pos);
// Match if at the beginning of the string.
if (pos != 0)
{
return false; // The input didn't match.
}
// Match a whitespace character atomically any number of times.
{
int iteration = 0;
while ((uint)iteration < (uint)slice.Length && char.IsWhiteSpace(slice[iteration]))
{
iteration++;
}
slice = slice.Slice(iteration);
pos += iteration;
}
// Match a character in the set [+\-] atomically, optionally.
{
if (!slice.IsEmpty && (((ch = slice[0]) == '+') | (ch == '-')))
{
slice = slice.Slice(1);
pos++;
}
}
// Match a character in the set [0-9] atomically at least once.
{
int iteration1 = slice.IndexOfAnyExceptInRange('0', '9');
if (iteration1 < 0)
{
iteration1 = slice.Length;
}
if (iteration1 == 0)
{
return false; // The input didn't match.
}
slice = slice.Slice(iteration1);
pos += iteration1;
}
// Match a whitespace character greedily any number of times.
//{
charloop_starting_pos = pos;
int iteration2 = 0;
while ((uint)iteration2 < (uint)slice.Length && char.IsWhiteSpace(slice[iteration2]))
{
iteration2++;
}
slice = slice.Slice(iteration2);
pos += iteration2;
charloop_ending_pos = pos;
goto CharLoopEnd;
CharLoopBacktrack:
base.CheckTimeout();
if (charloop_starting_pos >= charloop_ending_pos)
{
return false; // The input didn't match.
}
pos = --charloop_ending_pos;
slice = inputSpan.Slice(pos);
CharLoopEnd:
//}
// Match if at the end of the string or if before an ending newline.
if (pos < inputSpan.Length - 1 || ((uint)pos < (uint)inputSpan.Length && inputSpan[pos] != '\n'))
{
goto CharLoopBacktrack;
}
// The input matched.
base.runtextpos = pos;
base.Capture(0, matchStart, pos);
return true;
}
}
}
}
}
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