dart-mirrors

I have this annotation class Target{ final String value; const Target(this.value); } and 2 classes that are annotated with it @Target("/313") class c1{ } @Target("/314") class c2{ } how can i get a List of ClassMirror instances for the classes that have the Target annotation? based on the selected answer that is if i knew what library my calsses exist in var mirrorSystem = currentMirrorSystem(); var libraryMirror = mirrorSystem.findLibrary(#testlib); for(ClassMirror classMirror in libraryMirror.declarations.values){ if(classMirror.metadata!=null){ for(var meta in classMirror.metadata){ if(meta

I would like to be able to do something like this: class MyClass() {...} var class_name = "MyClass"; // user input here new class_name(); // so here, class_name is supposed to be a class constant Can anybody suggest a simple way to do it? One way to do it, is: library my_library; import 'dart:mirrors'; void main() { var userInput = 'MyClass'; var symbol = new Symbol(userInput); var myClasses = currentMirrorSystem().findLibrary(#my_library).declarations.values.where((dm) => dm is ClassMirror); var cm = myClasses.firstWhere((cm) => cm.simpleName == symbol); var instance = cm.newInstance(const

Is there a way to test the existence of a function or method in Dart without trying to call it and catch a NoSuchMethodError error? I am looking for something like if (exists("func_name")){...} to test whether a function named func_name exists. Thanks in advance! You can do that with mirrors API : import 'dart:mirrors'; class Test { method1() => "hello"; } main() { print(existsFunction("main")); // true print(existsFunction("main1")); // false print(existsMethodOnObject(new Test(), "method1")); // true print(existsMethodOnObject(new Test(), "method2")); // false } bool existsFunction(String

I have something like this: class MyClass { static void DoSomething(arg1, arg2){...} } Via reflection, I am able to get the ClassMirror of this class. From this point, how would I get to the concrete static function so I can call it. Note that I tried to use: ObjectMirror.invoke('DoSomething', [arg1, arg2]); which would initially appear to work, but it doesn't support passing of complex types as arguments, This static function requires a complex type as one of it's arguments. Ideally, I'd like to get the 'Function' object that represents the static method so I can invoke it directly. Gilad

I am writing a library in Dart and I have static files under the library folder. I want to be able to read those files, but I'm not sure how to retrieve the path to it... there is not __FILE__ or $0 like in some other languages. Update: It seems that I was not clear enough. Let this help you understand me: test.dart import 'foo.dart'; void main() { print(Foo.getMyPath()); } foo.dart library asd; class Foo { static Path getMyPath() => new Path('resources/'); } It gives me the wrong folder location. It gives me the path to test.dart + resources/ , but I want the path to foo.dart + resources/ .

How can I determine whether an object is of a class or not in the Dart language? I'm looking to do something like the following: if (someObject.class.toString() == "Num") { ... } And what is the returned value type? Will it have to be a String? The mirror library has been up and down and seems to be subject to rapid change right now, as the one thing I did find simply did not work as shown. Eliran Malka By using the is and is! operators, like this: if (someObject is T) From the documentation : The is and is! operators are handy for checking types. The result of obj is T is true if obj