Configure language and fix highlighting for dart

manual/src/introduction.md

@@ -10,6 +10,7 @@ tool that understands syntax. It supports the following languages:
 * Clojure
 * Common Lisp
 * CSS
+* Dart
 * Elixir
 * Emacs Lisp
 * Go

sample_files/compare.expected

@@ -19,6 +19,9 @@ b5e718eb8328f8df8aff0eddf4e46d1a  -
 sample_files/css_before.css sample_files/css_after.css
 a110f9a9ab8586f2f307df3cc9997ead  -
 
+sample_files/dart_before.dart sample_files/dart_after.dart
+aeed85d8cb8905197268309894a2945e  -
+
 sample_files/elisp_before.el sample_files/elisp_after.el
 c2871ec588ad8dd1e8c482efc4662f42  -
 

src/guess_language.rs

@@ -183,6 +183,7 @@ fn from_extension(extension: &OsStr, src: &str) -> Option<Language> {
         "lisp" | "lsp" | "asd" => Some(CommonLisp),
         "cs" => Some(CSharp),
         "css" => Some(Css),
+        "dart" => Some(Dart),
         "el" => Some(EmacsLisp),
         "ex" | "exs" => Some(Elixir),
         "go" => Some(Go),

src/tree_sitter_parser.rs

@@ -194,9 +194,9 @@ pub fn from_language(language: guess::Language) -> TreeSitterConfig {
         Dart => {
             let language = unsafe { tree_sitter_dart() };
             TreeSitterConfig {
-                name: "CSS",
+                name: "Dart",
                 language,
-                atom_nodes: HashSet::new(),
+                atom_nodes: (vec!["string_literal"]).into_iter().collect(),
                 delimiter_tokens: (vec![("{", "}"), ("(", ")"), ("[", "]"), ("<", ">")]),
                 highlight_query: ts::Query::new(
                     language,

vendor/tree-sitter-dart/queries/highlights.scm

@@ -118,8 +118,10 @@
 ; distinguish method call from variable access
 (unconditional_assignable_selector
   (identifier) @property)
-(assignable_selector
-  (identifier) @property)
+
+;; https://github.com/UserNobody14/tree-sitter-dart/issues/24
+;; (assignable_selector
+;;   (identifier) @property)
 
 ; assignments
 (assignment_expression
@@ -223,4 +225,4 @@
 ["do" "while" "continue" "for"] @repeat
 
 ; Error
-(ERROR) @error
+(ERROR) @error