Add dart support

aider/queries/tree-sitter-dart-tags.scm

@@ -0,0 +1,91 @@
+(class_definition
+  name: (identifier) @name.definition.class) @definition.class
+
+(method_signature
+  (function_signature)) @definition.method
+
+(type_alias
+  (type_identifier) @name.definition.type) @definition.type
+
+(method_signature
+  (getter_signature
+    name: (identifier) @name.definition.method)) @definition.method
+
+(method_signature
+  (setter_signature
+    name: (identifier) @name.definition.method)) @definition.method
+
+(method_signature
+  (function_signature
+  name: (identifier) @name.definition.method)) @definition.method
+
+(method_signature
+  (factory_constructor_signature
+    (identifier) @name.definition.method)) @definition.method
+
+(method_signature
+  (constructor_signature
+  name: (identifier) @name.definition.method)) @definition.method
+
+(method_signature
+  (operator_signature)) @definition.method
+
+(method_signature) @definition.method
+
+(mixin_declaration
+  (mixin)
+  (identifier) @name.definition.mixin) @definition.mixin
+
+(extension_declaration
+  name: (identifier) @name.definition.extension) @definition.extension
+
+(enum_declaration
+  name: (identifier) @name.definition.enum) @definition.enum
+
+(function_signature
+  name: (identifier) @name.definition.function) @definition.function
+
+(new_expression
+  (type_identifier) @name.reference.class) @reference.class
+
+(initialized_variable_definition
+  name: (identifier)
+  value: (identifier) @name.reference.class
+  value: (selector
+	"!"?
+	(argument_part
+	  (arguments
+	    (argument)*))?)?) @reference.class
+
+(assignment_expression
+  left: (assignable_expression
+		  (identifier)
+		  (unconditional_assignable_selector
+			"."
+			(identifier) @name.reference.call))) @reference.call
+
+(assignment_expression
+  left: (assignable_expression
+		  (identifier)
+		  (conditional_assignable_selector
+			"?."
+			(identifier) @name.reference.call))) @reference.call
+
+((identifier) @name
+ (selector
+    "!"?
+    (conditional_assignable_selector
+      "?." (identifier) @name.reference.call)?
+    (unconditional_assignable_selector
+      "."? (identifier) @name.reference.call)?
+    (argument_part
+      (arguments
+        (argument)*))?)*
+	(cascade_section
+	  (cascade_selector
+		(identifier)) @name.reference.call
+	  (argument_part
+		(arguments
+		  (argument)*))?)?) @reference.call
+
+

aider/website/docs/languages.md

@@ -62,6 +62,7 @@ cog.out(get_supported_languages_md())
 | cpp                  | .cc                  |    ✓     |   ✓    |
 | cpp                  | .cpp                 |    ✓     |   ✓    |
 | css                  | .css                 |          |   ✓    |
+| dart                 | .dart                |    ✓     |        |
 | dockerfile           | .dockerfile          |          |   ✓    |
 | dot                  | .dot                 |          |   ✓    |
 | elisp                | .el                  |    ✓     |   ✓    |