fix(tolk/grammar): support triple quotes strings (#41)

Author: i582

server/src/languages/tolk/tree-sitter-tolk/grammar.js

@@ -611,7 +611,13 @@ const TOLK_GRAMMAR = {
     // common constructions
 
     number_literal: $ => token(choice(seq("0x", /[0-9a-fA-F]+/), seq("0b", /[01]+/), /[0-9]+/)),
-    string_literal: $ => /"[^"]*"\w?/,
+    string_literal: $ =>
+        token(
+            choice(
+                /"""\s*[\s\S]*?"""/, // triple quotes
+                /"(?:[^"\\\n]|\\.)*"/, // sing quote
+            ),
+        ),
     boolean_literal: $ => choice("true", "false"),
     null_literal: $ => "null",
     underscore: $ => "_",