Use generated regex

SteamRE · Nov 14, 2023 · ea0706a · ea0706a
1 parent 0a0559f
commit ea0706a
Showing 1 changed file with 13 additions and 12 deletions.
diff --git a/Resources/SteamLanguageParser/Parser/LanguageParser.cs b/Resources/SteamLanguageParser/Parser/LanguageParser.cs
@@ -28,26 +28,27 @@ readonly struct TokenSourceInfo(string fileName, int startLineNumber, int startC
         public int EndColumnNumber { get; } = endColumnNumber;
     }
 
-    class LanguageParser
+    partial class LanguageParser
     {
-        public static string pattern =
-        @"(?<whitespace>\s+)|" +
-        @"(?<terminator>[;])|" +
+        [GeneratedRegex(
+            @"(?<whitespace>\s+)|" +
+            @"(?<terminator>[;])|" +
 
-        "[\"](?<string>.+?)[\"]|" +
+            "[\"](?<string>.+?)[\"]|" +
 
-        @"\/\/(?<comment>.*)$|" +
+            @"\/\/(?<comment>.*)$|" +
 
-        @"(?<identifier>-?[a-zA-Z_0-9][a-zA-Z0-9_:.]*)|" +
-        @"[#](?<preprocess>[a-zA-Z]*)|" +
+            @"(?<identifier>-?[a-zA-Z_0-9][a-zA-Z0-9_:.]*)|" +
+            @"[#](?<preprocess>[a-zA-Z]*)|" +
 
-        @"(?<operator>[{}<>\]=|])|" +
-        @"(?<invalid>[^\s]+)";
-
-        private static readonly Regex regexPattern = new(pattern, RegexOptions.Multiline | RegexOptions.Compiled);
+            @"(?<operator>[{}<>\]=|])|" +
+            @"(?<invalid>[^\s]+)",
+            RegexOptions.Multiline)]
+        private static partial Regex RegexPattern();
 
         public static Queue<Token> TokenizeString(string buffer, string fileName = "")
         {
+            var regexPattern = RegexPattern();
             var bufferLines = buffer.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
 
             MatchCollection matches = regexPattern.Matches(buffer);