| library; | 
 | import self as self; | 
 | import "dart:core" as core; | 
 |  | 
 | class Square extends core::Object /*hasConstConstructor*/  { | 
 |   final field (core::String) →? void logFunction; | 
 |   final field core::double length; | 
 |   const constructor •(core::double length, [has-declared-initializer (core::String) →? void logFunction = #C1]) → self::Square | 
 |     : self::Square::length = length, self::Square::logFunction = logFunction, super core::Object::•() | 
 |     ; | 
 |   method _log(core::String toLog) → void { | 
 |     (core::String) →? void _l = this.{self::Square::logFunction}{(core::String) →? void}; | 
 |     if(!(_l == null)) { | 
 |       _l{(core::String) → void}(toLog){(core::String) → void}; | 
 |     } | 
 |   } | 
 |   get area() → core::double { | 
 |     this.{self::Square::_log}("Square.area"){(core::String) → void}; | 
 |     return this.{self::Square::length}{core::double}.{core::double::*}(this.{self::Square::length}{core::double}){(core::num) → core::double}; | 
 |   } | 
 | } | 
 | static field core::String log = ""; | 
 | static method logger(core::String s) → void { | 
 |   self::log = self::log.{core::String::+}(s){(core::String) → core::String}; | 
 | } | 
 | static method main() → dynamic { | 
 |   { | 
 |     final synthesized self::Square #0#0 = new self::Square::•(2.0, #C2); | 
 |     if(!(let final dynamic #t1 = #0#0.{self::Square::area}{core::double} in true)) | 
 |       throw{for-error-handling} new core::StateError::•("Pattern matching error"); | 
 |   } | 
 |   self::expect("Square.area", self::log); | 
 | } | 
 | static method expect(dynamic expected, dynamic actual) → dynamic { | 
 |   if(!(expected =={core::Object::==}{(core::Object) → core::bool} actual)) { | 
 |     throw "Expected ${expected}, actual ${actual}"; | 
 |   } | 
 | } | 
 |  | 
 | constants  { | 
 |   #C1 = null | 
 |   #C2 = static-tearoff self::logger | 
 | } |