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Modernize null-check patterns: use 'is null' and 'is not null'

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Replace '== null' with 'is null' and '!= null' with 'is not null'
across 19 core files following modern C# pattern matching conventions.

Only literal null comparisons are changed. Assignments, value
comparisons, and LINQ expressions are left untouched.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2026-03-24 00:27:07 +00:00
parent 902e944cbb
commit c5df6a49c6
19 changed files with 111 additions and 111 deletions
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12
MinecraftClient/UpgradeHelper.cs
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@ -211,7 +211,7 @@ namespace MinecraftClient
if (!cancellationToken.IsCancellationRequested)
{
HttpResponseMessage res = httpWebRequest.Result;
if (res.Headers.Location != null)
if (res.Headers.Location is not null)
{
Match match = Regex.Match(res.Headers.Location.ToString(), GithubReleaseUrl + @"/tag/(\d{4})(\d{2})(\d{2})-(\d+)");
if (match.Success && match.Groups.Count == 5)
@ -284,7 +284,7 @@ namespace MinecraftClient
private static bool CompareVersionInfo(string? current, string? latest)
{
if (current == null || latest == null)
if (current is null || latest is null)
return false;
Regex reg = new(@"\w+\sbuild\s(\d+),\sbuilt\son\s(\d{4})[-\/\.\s]?(\d{2})[-\/\.\s]?(\d{2}).*");
Regex reg2 = new(@"\w+\sbuild\s(\d+),\sbuilt\son\s\w+\s(\d{2})[-\/\.\s]?(\d{2})[-\/\.\s]?(\d{4}).*");
@ -297,13 +297,13 @@ namespace MinecraftClient
try { curTime = new(int.Parse(curMatch.Groups[2].Value), int.Parse(curMatch.Groups[3].Value), int.Parse(curMatch.Groups[4].Value)); }
catch { curTime = null; }
}
if (curTime == null)
if (curTime is null)
{
curMatch = reg2.Match(current);
try { curTime = new(int.Parse(curMatch.Groups[4].Value), int.Parse(curMatch.Groups[3].Value), int.Parse(curMatch.Groups[2].Value)); }
catch { curTime = null; }
}
if (curTime == null)
if (curTime is null)
return false;
Match latestMatch = reg.Match(latest);
@ -312,13 +312,13 @@ namespace MinecraftClient
try { latestTime = new(int.Parse(latestMatch.Groups[2].Value), int.Parse(latestMatch.Groups[3].Value), int.Parse(latestMatch.Groups[4].Value)); }
catch { latestTime = null; }
}
if (latestTime == null)
if (latestTime is null)
{
latestMatch = reg2.Match(latest);
try { latestTime = new(int.Parse(latestMatch.Groups[4].Value), int.Parse(latestMatch.Groups[3].Value), int.Parse(latestMatch.Groups[2].Value)); }
catch { latestTime = null; }
}
if (latestTime == null)
if (latestTime is null)
return false;
int curBuildId, latestBuildId;