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TextMateSharp

An interpreter for grammar files as defined by TextMate. TextMate grammars use the oniguruma dialect (https://github.com/kkos/oniguruma). Supports loading grammar files only from JSON format. Cross - grammar injections are currently not supported.

TextMateSharp is a port of microsoft/vscode-textmate that brings TextMate grammars to dotnet ecosystem. The implementation is based the Java port eclipse/tm4e.

TextMateSharp uses a wrapper via nuget packges around Oniguruma regex engine. Thanks @aikawayataro for your contribution.

TextMateSharp is used by AvaloniaEdit.

Building

Just execute dotnet build under the folder TextMateSharp

Using

class Program
{
    static void Main(string[] args)
    {
        try
        {
            IRegistryOptions options = new LocalRegistryOptions();
            Registry.Registry registry = new Registry.Registry(options);

            List<string> textLines = new List<string>();
            textLines.Add("using static System; /* comment here */");
            textLines.Add("namespace Example");
            textLines.Add("{");
            textLines.Add("}");

            IGrammar grammar = registry.LoadGrammar("source.cs");

            StackElement ruleStack = null;

            foreach (string line in textLines)
            {
                Console.WriteLine(string.Format("Tokenizing line: {0}", line));

                ITokenizeLineResult result = grammar.TokenizeLine(line, ruleStack);

                ruleStack = result.RuleStack;

                foreach (IToken token in result.GetTokens())
                {
                    int startIndex = (token.StartIndex > line.Length) ?
                        line.Length : token.StartIndex;
                    int endIndex = (token.EndIndex > line.Length) ?
                        line.Length : token.EndIndex;

                    Console.WriteLine(string.Format(
                        "  - token from {0} to {1} -->{2}<-- with scopes {3}",
                        startIndex,
                        endIndex,
                        line.SubstringAtIndexes(startIndex, endIndex),
                        string.Join(",", token.Scopes)));

                    foreach (string scopeName in token.Scopes)
                    {
                        Theme theme = registry.GetTheme();
                        List<ThemeTrieElementRule> themeRules =
                            theme.Match(scopeName);

                        foreach (ThemeTrieElementRule themeRule in themeRules)
                        {
                            Console.WriteLine(
                                "      - Matched theme rule: " + 
                                "[bg: {0}, fg:{1}, fontStyle: {2}]",
                                theme.GetColor(themeRule.background),
                                theme.GetColor(themeRule.foreground),
                                themeRule.fontStyle);
                        }
                    }
                }
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("ERROR: " + ex.Message);
        }
    }

    class LocalRegistryOptions : IRegistryOptions
    {
        public ICollection<string> GetInjections(string scopeName)
        {
            return null;
        }

        public IRawGrammar GetGrammar(string scopeName)
        {
            return null;
        }

        public IRawTheme GetTheme(string scopeName)
        {
            return null;
        }

        public IRawTheme GetDefaultTheme()
        {
            string themePath = Path.GetFullPath(
                @"../../../../test/themes/dark_vs.json");

            using (StreamReader reader = new StreamReader(themePath))
            {
                return ThemeReader.ReadThemeSync(reader);
            }
        }
    }
}

OUTPUT:

Tokenizing line: using static System; /* comment here */
  - token from 0 to 5 -->using<-- with scopes source.cs,keyword.other.using.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:#569CD6, fontStyle: -1]
  - token from 5 to 6 --> <-- with scopes source.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
  - token from 6 to 12 -->static<-- with scopes source.cs,keyword.other.static.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:#569CD6, fontStyle: -1]
  - token from 12 to 13 --> <-- with scopes source.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
  - token from 13 to 19 -->System<-- with scopes source.cs,storage.type.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:#569CD6, fontStyle: -1]
  - token from 19 to 20 -->;<-- with scopes source.cs,punctuation.terminator.statement.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
  - token from 20 to 21 --> <-- with scopes source.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
  - token from 21 to 23 -->/*<-- with scopes source.cs,comment.block.cs,punctuation.definition.comment.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:#6A9955, fontStyle: -1]
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
  - token from 23 to 37 --> comment here <-- with scopes source.cs,comment.block.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:#6A9955, fontStyle: -1]
  - token from 37 to 39 -->*/<-- with scopes source.cs,comment.block.cs,punctuation.definition.comment.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:#6A9955, fontStyle: -1]
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
Tokenizing line: namespace Example
  - token from 0 to 9 -->namespace<-- with scopes source.cs,keyword.other.namespace.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:#569CD6, fontStyle: -1]
  - token from 9 to 10 --> <-- with scopes source.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
  - token from 10 to 17 -->Example<-- with scopes source.cs,entity.name.type.namespace.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
Tokenizing line: {
  - token from 0 to 1 -->{<-- with scopes source.cs,punctuation.curlybrace.open.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
      - Matched theme rule: [bg: , fg:, fontStyle: -1]
Tokenizing line: }
  - token from 0 to 1 -->}<-- with scopes source.cs
      - Matched theme rule: [bg: , fg:, fontStyle: -1]

Demo

There is a demo project in TextMateSharp.Demo folder.

Build and run:

cd src/TestMateSharp.Demo
dotnet build
dotnet run -- ./testdata/samplefiles/sample.cs