[StaticWebAssets] Improve globbing match performance (#44159)

* Removes the usage of Microsoft.Extensions.FileSystemGlobbing in favor
  of a custom implementation optimized for our scenarios.
* Improves the parallelism in DefineStaticWebAssetEndpoints.
* Spanifies the string manipulation logic.

src/StaticWebAssetsSdk/Tasks/Compression/ResolveCompressedAssets.cs

@@ -3,7 +3,6 @@
 
 using Microsoft.AspNetCore.StaticWebAssets.Tasks.Utils;
 using Microsoft.Build.Framework;
-using Microsoft.Extensions.FileSystemGlobbing;
 
 namespace Microsoft.AspNetCore.StaticWebAssets.Tasks;
 
@@ -60,12 +59,15 @@ public override bool Execute()
         var includePatterns = SplitPattern(IncludePatterns);
         var excludePatterns = SplitPattern(ExcludePatterns);
 
-        var matcher = new Matcher();
-        matcher.AddIncludePatterns(includePatterns);
-        matcher.AddExcludePatterns(excludePatterns);
+        var matcher = new StaticWebAssetGlobMatcherBuilder()
+            .AddIncludePatterns(includePatterns)
+            .AddExcludePatterns(excludePatterns)
+            .Build();
 
         var matchingCandidateAssets = new List<StaticWebAsset>();
 
+        var matchContext = StaticWebAssetGlobMatcher.CreateMatchContext();
+
         // Add each candidate asset to each compression configuration with a matching pattern.
         foreach (var asset in candidates)
         {
@@ -80,9 +82,10 @@ public override bool Execute()
             }
 
             var relativePath = asset.ComputePathWithoutTokens(asset.RelativePath);
-            var match = matcher.Match(relativePath);
+            matchContext.SetPathAndReinitialize(relativePath.AsSpan());
+            var match = matcher.Match(matchContext);
 
-            if (!match.HasMatches)
+            if (!match.IsMatch)
             {
                 Log.LogMessage(
                     MessageImportance.Low,

src/StaticWebAssetsSdk/Tasks/ComputeReferenceStaticWebAssetItems.cs

@@ -44,7 +44,7 @@ public override bool Execute()
             var resultAssets = new List<StaticWebAsset>();
             foreach (var (key, group) in existingAssets)
             {
-                if (!ComputeReferenceStaticWebAssetItems.TryGetUniqueAsset(group, out var selected))
+                if (!TryGetUniqueAsset(group, out var selected))
                 {
                     if (selected == null)
                     {

src/StaticWebAssetsSdk/Tasks/ComputeStaticWebAssetsForCurrentProject.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using Microsoft.Build.Framework;
@@ -36,7 +36,7 @@ public override bool Execute()
             var resultAssets = new List<StaticWebAsset>();
             foreach (var (key, group) in currentProjectAssets)
             {
-                if (!ComputeStaticWebAssetsForCurrentProject.TryGetUniqueAsset(group, out var selected))
+                if (!TryGetUniqueAsset(group, out var selected))
                 {
                     if (selected == null)
                     {

src/StaticWebAssetsSdk/Tasks/Data/ContentTypeMapping.cs

@@ -4,15 +4,12 @@
 using System.Diagnostics;
 using System.Globalization;
 using Microsoft.Build.Framework;
-using Microsoft.Extensions.FileSystemGlobbing;
 
 namespace Microsoft.AspNetCore.StaticWebAssets.Tasks;
 
 [DebuggerDisplay($"{{{nameof(GetDebuggerDisplay)}(),nq}}")]
 internal struct ContentTypeMapping(string mimeType, string cache, string pattern, int priority)
 {
-    private Matcher _matcher;
-
     public string Pattern { get; set; } = pattern;
 
     public string MimeType { get; set; } = mimeType;
@@ -27,15 +24,5 @@ internal struct ContentTypeMapping(string mimeType, string cache, string pattern
             contentTypeMappings.GetMetadata(nameof(Pattern)),
             int.Parse(contentTypeMappings.GetMetadata(nameof(Priority)), CultureInfo.InvariantCulture));
 
-    internal bool Matches(string identity)
-    {
-        if (_matcher == null)
-        {
-            _matcher = new Matcher();
-            _matcher.AddInclude(Pattern);
-        }
-        return _matcher.Match(identity).HasMatches;
-    }
-
     private readonly string GetDebuggerDisplay() => $"Pattern: {Pattern}, MimeType: {MimeType}, Cache: {Cache}, Priority: {Priority}";
 }

src/StaticWebAssetsSdk/Tasks/Data/StaticWebAsset.cs

@@ -918,7 +918,7 @@ internal string EmbedTokens(string relativePath)
         var pattern = StaticWebAssetPathPattern.Parse(relativePath, Identity);
         var resolver = StaticWebAssetTokenResolver.Instance;
         pattern.EmbedTokens(this, resolver);
-        return pattern.RawPattern;
+        return pattern.RawPattern.ToString();
     }
 
     internal FileInfo ResolveFile() => ResolveFile(Identity, OriginalItemSpec);