Dart: Magic Constant Equivalents

PHP offers useful magic constants like:

__CLASS__
__FILE__
__METHOD__

and so on. Also the

get_class()

function provides a similar functionality.

Is there anything similar in Dart?

Compiler constants similar to PHP not available. But you can do this manually (not constant value).

This slower but it works.

import 'package:stack_trace/stack_trace.dart';

void main() {
  print(__LINE__);
  print(__METHOD__);
  print(__FILE__);
  new Foo();
}

class Foo {
  Foo() {
    print(__CLASS__);
  }
}

String get __CLASS__ {
  var frames = new Trace.current().frames;
  if(frames.length > 1) {
    var member = frames[1].member;
    var parts = member.split(".");
    if(parts.length > 1) {
      return parts[1];
    }
  }

  return null;
}


String get __METHOD__ {
  var frames = new Trace.current().frames;
  if(frames.length > 1) {
    return frames[1].member;
  }

  return null;
}

String get __FILE__ {
  var frames = new Trace.current().frames;
  if(frames.length > 1) {
    return frames[1].uri.path;
  }

  return null;
}

int get __LINE__ {
  var frames = new Trace.current().frames;
  if(frames.length > 1) {
    return frames[1].line;
  }

  return null;
}

4
main
/home/andrew/dart/for_web/test/bin/test.dart
Foo