After adding the following method to map case classes to Map or js.Dictionary - and I've tried now five or six variants of the following - my code compiles fine and without warnings, but then hits errors at the fastOptJS sjs linking stage.
The method
def ccToMap(cc: AnyRef) =
(Map[String, Any]() /: cc.getClass.getDeclaredFields) {
(a, f) =>
f.setAccessible(true)
a + (f.getName -> f.get(cc))
}
Note that all the variants I have tried do the same thing in a slightly different manner.
The error
[info] Fast optimizing /Users/justin/Desktop/arete/jt/client/target/scala-2.11/client-fastopt.js
[error] Referring to non-existent class java.lang.reflect.Field
[error] called from com.jshin47.jtdc.client.module.visualization.DiodeStateVizC$.ccToMap(java.lang.Object)scala.collection.immutable.Map
[error] called from com.jshin47.jtdc.client.module.visualization.DiodeStateVizC$.<init>()
[error] called from com.jshin47.jtdc.client.module.landing.LandingLocC$$anonfun$2.apply(japgolly.scalajs.react.extra.router.RouterCtl)japgolly.scalajs.react.ReactElement
[error] called from com.jshin47.jtdc.client.module.landing.LandingLocC$$anonfun$2.apply(java.lang.Object)java.lang.Object
[error] called from scala.collection.LinearSeqOptimized$class.foreach(scala.collection.LinearSeqOptimized,scala.Function1)scala.Unit
[error] called from scala.collection.mutable.MutableList.foreach(scala.Function1)scala.Unit
[error] called from scala.collection.TraversableLike$WithFilter.map(scala.Function1,scala.collection.generic.CanBuildFrom)java.lang.Object
[error] called from scala.collection.immutable.Stream$StreamWithFilter.map(scala.Function1,scala.collection.generic.CanBuildFrom)java.lang.Object
[error] called from org.scalajs.testinterface.internal.Slave.org$scalajs$testinterface$internal$Slave$$execute(scala.scalajs.js.Dynamic)scala.Unit
[error] called from org.scalajs.testinterface.internal.Slave.handleMsgImpl(java.lang.String,scala.Function0)scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.handleMsg(java.lang.String)scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.$$anonfun$1(java.lang.String)scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.init()scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.$$js$exported$meth$init()java.lang.Object
[error] called from org.scalajs.testinterface.internal.BridgeBase.init
[error] exported to JavaScript with @JSExport
[error] involving instantiated classes:
[error] com.jshin47.jtdc.client.module.visualization.DiodeStateVizC$
[error] com.jshin47.jtdc.client.module.landing.LandingLocC$$anonfun$2
[error] scala.collection.mutable.Queue
[error] scala.collection.mutable.MutableList
[error] scala.collection.TraversableLike$WithFilter
[error] scala.collection.immutable.Stream$StreamWithFilter
[error] org.scalajs.testinterface.internal.Slave
[error] org.scalajs.testinterface.internal.Master
[error] Referring to non-existent method java.lang.Class.getDeclaredFields() [java.lang.reflect.Field
[error] called from com.jshin47.jtdc.client.module.visualization.DiodeStateVizC$.ccToMap(java.lang.Object)scala.collection.immutable.Map
[error] called from com.jshin47.jtdc.client.module.visualization.DiodeStateVizC$.<init>()
[error] called from com.jshin47.jtdc.client.module.landing.LandingLocC$$anonfun$2.apply(japgolly.scalajs.react.extra.router.RouterCtl)japgolly.scalajs.react.ReactElement
[error] called from com.jshin47.jtdc.client.module.landing.LandingLocC$$anonfun$2.apply(java.lang.Object)java.lang.Object
[error] called from scala.collection.LinearSeqOptimized$class.foreach(scala.collection.LinearSeqOptimized,scala.Function1)scala.Unit
[error] called from scala.collection.mutable.MutableList.foreach(scala.Function1)scala.Unit
[error] called from scala.collection.TraversableLike$WithFilter.map(scala.Function1,scala.collection.generic.CanBuildFrom)java.lang.Object
[error] called from scala.collection.immutable.Stream$StreamWithFilter.map(scala.Function1,scala.collection.generic.CanBuildFrom)java.lang.Object
[error] called from org.scalajs.testinterface.internal.Slave.org$scalajs$testinterface$internal$Slave$$execute(scala.scalajs.js.Dynamic)scala.Unit
[error] called from org.scalajs.testinterface.internal.Slave.handleMsgImpl(java.lang.String,scala.Function0)scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.handleMsg(java.lang.String)scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.$$anonfun$1(java.lang.String)scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.init()scala.Unit
[error] called from org.scalajs.testinterface.internal.BridgeBase.$$js$exported$meth$init()java.lang.Object
[error] called from org.scalajs.testinterface.internal.BridgeBase.init
[error] exported to JavaScript with @JSExport
[error] involving instantiated classes:
[error] com.jshin47.jtdc.client.module.visualization.DiodeStateVizC$
[error] com.jshin47.jtdc.client.module.landing.LandingLocC$$anonfun$2
[error] scala.collection.mutable.Queue
[error] scala.collection.mutable.MutableList
[error] scala.collection.TraversableLike$WithFilter
[error] scala.collection.immutable.Stream$StreamWithFilter
[error] org.scalajs.testinterface.internal.Slave
[error] org.scalajs.testinterface.internal.Master
[trace] Stack trace suppressed: run last client/compile:fastOptJS for the full output.
[error] (client/compile:fastOptJS) There were linking errors
[error] Total time: 36 s, completed May 10, 2016 2:01:07 AM
What I've tried
Being unfamiliar with the details of the linker I am only able to try some "obvious" diagnostics:
- Whether I call the method or not, this error is thrown (it doesn't have to be in the code path, so this is getting thrown when the method itself is linked)
- The
Maptype itself works just fine as an argument to the function where I am trying to invoke this - I know to a certainty that iff this method (or similar) is present, then I get the above linker error. (Without, no error.)
Any tips on how to proceed, debug, etc are appreciated.
Alternatively, any tips on how I may convert a case class to a Map without the above-style (reflection-based) function, please let me know
