Add text object queries for dart (#9411)

* Add text object queries for dart

* Update runtime/queries/dart/textobjects.scm

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

* Clean up internal capture name

---------

Co-authored-by: Sébastien Blondiau <sebastien.blondiau@iot-d.com>
Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

book/src/generated/lang-support.md

@@ -24,7 +24,7 @@
 | css | ✓ |  | ✓ | `vscode-css-language-server` |
 | cue | ✓ |  |  | `cuelsp` |
 | d | ✓ | ✓ | ✓ | `serve-d` |
-| dart | ✓ |  | ✓ | `dart` |
+| dart | ✓ | ✓ | ✓ | `dart` |
 | dbml | ✓ |  |  |  |
 | devicetree | ✓ |  |  |  |
 | dhall | ✓ | ✓ |  | `dhall-lsp-server` |

runtime/queries/dart/textobjects.scm

@@ -0,0 +1,68 @@
+(class_definition
+  body: (_) @class.inside) @class.around
+
+(mixin_declaration
+  (class_body) @class.inside) @class.around
+
+(extension_declaration
+  (extension_body) @class.inside) @class.around
+
+(enum_declaration
+  body: (_) @class.inside) @class.around
+
+(type_alias) @class.around
+
+(_
+  (
+    [
+      (getter_signature)
+      (setter_signature)
+      (function_signature)
+      (method_signature)
+      (constructor_signature)
+    ]
+    .
+    (function_body) @function.inside @function.around
+  )  @function.around
+)
+
+(declaration
+  [
+    (constant_constructor_signature)
+    (constructor_signature)
+    (factory_constructor_signature)
+    (redirecting_factory_constructor_signature)
+    (getter_signature)
+    (setter_signature)
+    (operator_signature)
+    (function_signature)
+  ]
+) @function.around
+
+(lambda_expression
+    body: (_) @function.inside
+) @function.around
+
+(function_expression
+    body: (_) @function.inside
+) @function.around
+
+[
+  (comment)
+  (documentation_comment)
+] @comment.inside
+
+(comment)+ @comment.around
+
+(documentation_comment)+ @comment.around
+
+(formal_parameter) @parameter.inside
+
+(formal_parameter_list) @parameter.around
+
+(expression_statement
+  ((identifier) @_name (#any-of? @_name "test" "testWidgets"))
+  .
+  (selector (argument_part (arguments . (_) . (argument) @test.inside)))
+) @test.around
+