refactor: rewrites the built-in grammar extension

Add syntax highlighting for Haxe

src/Models/TextMateHelper.cs

@@ -17,31 +17,75 @@ using TextMateSharp.Themes;
 
 namespace SourceGit.Models
 {
-    public class RegistryOptionsWrapper : IRegistryOptions
+    public static class GrammarUtility
     {
-        public RegistryOptionsWrapper(ThemeName defaultTheme)
+        private static readonly ExtraGrammar[] s_extraGrammas =
+        [
+            new ExtraGrammar("source.toml", ".toml", "toml.json"),
+            new ExtraGrammar("source.kotlin", ".kotlin", "kotlin.json"),
+            new ExtraGrammar("source.hx", ".hx", "haxe.json"),
+            new ExtraGrammar("source.hxml", ".hxml", "hxml.json"),
+        ];
+
+        public static string GetExtension(string file)
         {
-            _backend = new RegistryOptions(defaultTheme);
-            _extraGrammars = new List<IRawGrammar>();
+            var extension = Path.GetExtension(file);
+            if (extension == ".h")
+                extension = ".cpp";
+            else if (extension == ".resx" || extension == ".plist" || extension == ".manifest")
+                extension = ".xml";
+            else if (extension == ".command")
+                extension = ".sh";
+            else if (extension == ".kt" || extension == ".kts")
+                extension = ".kotlin";
 
-            string[] extraGrammarFiles = ["toml.json", "kotlin.json"];
-            foreach (var file in extraGrammarFiles)
-            {
-                var asset = AssetLoader.Open(new Uri($"avares://SourceGit/Resources/Grammars/{file}",
-                    UriKind.RelativeOrAbsolute));
-
-                try
-                {
-                    var grammar = GrammarReader.ReadGrammarSync(new StreamReader(asset));
-                    _extraGrammars.Add(grammar);
-                }
-                catch
-                {
-                    // ignore
-                }
-            }
+            return extension;
         }
 
+        public static string GetScopeByExtension(string extension)
+        {
+            foreach (var grammar in s_extraGrammas)
+            {
+                if (grammar.Extension.Equals(extension, StringComparison.OrdinalIgnoreCase))
+                    return grammar.Scope;
+            }
+
+            return null;
+        }
+
+        public static IRawGrammar Load(string scopeName)
+        {
+            foreach (var grammar in s_extraGrammas)
+            {
+                if (grammar.Scope.Equals(scopeName, StringComparison.OrdinalIgnoreCase))
+                {
+                    var asset = AssetLoader.Open(new Uri($"avares://SourceGit/Resources/Grammars/{grammar.File}",
+                        UriKind.RelativeOrAbsolute));
+
+                    try
+                    {
+                        return GrammarReader.ReadGrammarSync(new StreamReader(asset));
+                    }
+                    catch
+                    {
+                        break;
+                    }
+                }
+            }
+
+            return null;
+        }
+
+        private record ExtraGrammar(string Scope, string Extension, string File)
+        {
+            public readonly string Scope = Scope;
+            public readonly string Extension = Extension;
+            public readonly string File = File;
+        }
+    }
+
+    public class RegistryOptionsWrapper(ThemeName defaultTheme) : IRegistryOptions
+    {
         public IRawTheme GetTheme(string scopeName)
         {
             return _backend.GetTheme(scopeName);
@@ -49,8 +93,7 @@ namespace SourceGit.Models
 
         public IRawGrammar GetGrammar(string scopeName)
         {
-            var grammar = _extraGrammars.Find(x => x.GetScopeName().Equals(scopeName, StringComparison.Ordinal));
-            return grammar ?? _backend.GetGrammar(scopeName);
+            return GrammarUtility.Load(scopeName) ?? _backend.GetGrammar(scopeName);
         }
 
         public ICollection<string> GetInjections(string scopeName)
@@ -70,25 +113,11 @@ namespace SourceGit.Models
 
         public string GetScopeByFileName(string filename)
         {
-            var extension = Path.GetExtension(filename);
-            if (extension == ".h")
-                extension = ".cpp";
-            else if (extension == ".resx" || extension == ".plist" || extension == ".manifest")
-                extension = ".xml";
-            else if (extension == ".command")
-                extension = ".sh";
-            else if (extension == ".kt" || extension == ".kts")
-                extension = ".kotlin";
-
-            var grammar = _extraGrammars.Find(x => x.GetScopeName().EndsWith(extension, StringComparison.OrdinalIgnoreCase));
-            if (grammar != null)
-                return grammar.GetScopeName();
-
-            return _backend.GetScopeByExtension(extension);
+            var ext = GrammarUtility.GetExtension(filename);
+            return GrammarUtility.GetScopeByExtension(ext) ?? _backend.GetScopeByExtension(ext);
         }
 
-        private readonly RegistryOptions _backend;
-        private readonly List<IRawGrammar> _extraGrammars;
+        private readonly RegistryOptions _backend = new(defaultTheme);
     }
 
     public static class TextMateHelper

src/Resources/Grammars/hxml.json

@@ -0,0 +1,70 @@
+{
+  "information_for_contributors": [
+    "This file has been copied from https://github.com/vshaxe/haxe-TmLanguage/blob/ddad8b4c6d0781ac20be0481174ec1be772c5da5/hxml.tmLanguage",
+    "and converted to JSON using https://marketplace.visualstudio.com/items?itemName=pedro-w.tmlanguage"
+  ],
+  "fileTypes": [
+    "hxml"
+  ],
+  "foldingStartMarker": "--next",
+  "foldingStopMarker": "\\n\\n",
+  "keyEquivalent": "^@H",
+  "name": "Hxml",
+  "patterns": [
+    {
+      "captures": {
+        "1": {
+          "name": "punctuation.definition.comment.hxml"
+        }
+      },
+      "match": "(#).*$\\n?",
+      "name": "comment.line.number-sign.hxml"
+    },
+    {
+      "begin": "(?<!\\w)(--macro)\\b",
+      "beginCaptures": {
+        "1": {
+          "name": "keyword.other.hxml"
+        }
+      },
+      "end": "\\n",
+      "patterns": [
+        {
+          "include": "source.hx#block-contents"
+        }
+      ]
+    },
+    {
+      "match": "(?<!\\w)(-m|-main|--main|--run)\\b\\s*\\b(?:(([a-z][a-zA-Z0-9]*\\.)*)(_*[A-Z]\\w*))?\\b",
+      "captures": {
+        "1": {
+          "name": "keyword.other.hxml"
+        },
+        "2": {
+          "name": "support.package.hx"
+        },
+        "4": {
+          "name": "entity.name.type.hx"
+        }
+      }
+    },
+    {
+      "match": "(?<!\\w)(-cppia|-cpp?|-js|-as3|-swf-(header|version|lib(-extern)?)|-swf9?|-neko|-python|-php|-cs|-java-lib|-java|-xml|-lua|-hl|-x|-lib|-D|-resource|-exclude|-version|-v|-debug|-prompt|-cmd|-dce\\s+(std|full|no)?|--flash-strict|--no-traces|--flash-use-stage|--neko-source|--gen-hx-classes|-net-lib|-net-std|-c-arg|--each|--next|--display|--no-output|--times|--no-inline|--no-opt|--php-front|--php-lib|--php-prefix|--remap|--help-defines|--help-metas|-help|--help|-java|-cs|--js-modern|--interp|--eval|--dce|--wait|--connect|--cwd|--run).*$",
+      "captures": {
+        "1": {
+          "name": "keyword.other.hxml"
+        }
+      }
+    },
+    {
+      "match": "(?<!\\w)(--js(on)?|--lua|--swf-(header|version|lib(-extern)?)|--swf|--as3|--neko|--php|--cppia|--cpp|--cppia|--cs|--java-lib(-extern)?|--java|--jvm|--python|--hl|-p|--class-path|-L|--library|--define|-r|--resource|--cmd|-C|--verbose|--debug|--prompt|--xml|--json|--net-lib|--net-std|--c-arg|--version|--haxelib-global|-h|--main|--server-connect|--server-listen).*$",
+      "captures": {
+        "1": {
+          "name": "keyword.other.hxml"
+        }
+      }
+    }
+  ],
+  "scopeName": "source.hxml",
+  "uuid": "CB1B853A-C4C8-42C3-BA70-1B1605BE51C1"
+}