scalameta/metals

    val registry    = new Registry()

    val grammar     = registry.loadGrammarFromPathSync("Scala.tmLanguage.json",
      TextMateTest.getClass.getResourceAsStream("/Scala.tmLanguage.json"))

    val source      = "object Foo { def main(args: Array[String]): Unit = println(\"Hello\") }"

    val lineTokens  = grammar.tokenizeLine(source)
    val tokens      = lineTokens.getTokens
    tokens.foreach { tk =>
      val sub = source.substring(tk.getStartIndex, tk.getEndIndex)
        println(s"[${tk.getStartIndex} to ${tk.getEndIndex}] source '$sub' has scopes ${tk.getScopes}")
    }

[0 to 6] source 'object' has scopes [source.scala, keyword.declaration.scala]
[6 to 7] source ' ' has scopes [source.scala]
[7 to 10] source 'Foo' has scopes [source.scala, entity.name.class.declaration]
[10 to 11] source ' ' has scopes [source.scala]
[11 to 12] source '{' has scopes [source.scala, punctuation.section.block.begin.scala]
[12 to 13] source ' ' has scopes [source.scala]
[13 to 16] source 'def' has scopes [source.scala, keyword.declaration.scala]
[16 to 17] source ' ' has scopes [source.scala]
[17 to 21] source 'main' has scopes [source.scala, entity.name.function.declaration]
[21 to 22] source '(' has scopes [source.scala, meta.bracket.scala]
[22 to 26] source 'args' has scopes [source.scala, variable.parameter.scala]
[26 to 27] source ':' has scopes [source.scala, meta.colon.scala]
[27 to 28] source ' ' has scopes [source.scala]
[28 to 33] source 'Array' has scopes [source.scala, entity.name.class]
[33 to 34] source '[' has scopes [source.scala, meta.bracket.scala]
[34 to 40] source 'String' has scopes [source.scala, entity.name.class]
[40 to 41] source ']' has scopes [source.scala, meta.bracket.scala]
[41 to 42] source ')' has scopes [source.scala, meta.bracket.scala]
[42 to 43] source ':' has scopes [source.scala, keyword.operator.scala]
[43 to 44] source ' ' has scopes [source.scala]
[44 to 48] source 'Unit' has scopes [source.scala, entity.name.class]
[48 to 49] source ' ' has scopes [source.scala]
[49 to 50] source '=' has scopes [source.scala, keyword.operator.comparison.scala]
[50 to 58] source ' println' has scopes [source.scala]
[58 to 59] source '(' has scopes [source.scala, meta.bracket.scala]
[59 to 60] source '"' has scopes [source.scala, string.quoted.double.scala, punctuation.definition.string.begin.scala]
[60 to 65] source 'Hello' has scopes [source.scala, string.quoted.double.scala]
[65 to 66] source '"' has scopes [source.scala, string.quoted.double.scala, punctuation.definition.string.end.scala]
[66 to 67] source ')' has scopes [source.scala, meta.bracket.scala]
[67 to 68] source ' ' has scopes [source.scala]
[68 to 69] source '}' has scopes [source.scala, punctuation.section.block.end.scala]