I'm surprised: "metamodel expressions are not yet supported on the Dart backend"

[welopino]

I am using ceylon 1.3.2 and the corresponding ceylon-dart plugin.

The dart backend contains a lot of code for the treatment of meta model code. But a simple program of that sort couldn't be compiled and run.

run.ceylon:

shared void run(){
  value a = `String`;
   print(a);  
}

compiled with command:

$ ./bin/ceylon compile-dart --src=ceylondartMeta/source first

gives:

ceylondartMeta/source/first/run.ceylon:4: warning: unsupported feature: metamodel expressions are not yet supported on the
Dart backend
  value a = `String`;
            ^
1 warning
Note: Created module first/1.0.0

run with command:

$ ./bin/ceylon run-dart first

Unhandled exception:
AssertionError "Meta expressions not yet supported at 'run.ceylon: 4:12-4:19'"
#0      $package$run (file:///tmp/ceylon-run-dart3727661573809872428/first/first.dart:7:41)
#1      _$runToplevel.<anonymous closure> (file:///tmp/ceylon-run-dart3727661573809872428/first/first.dart:16:5)
#2      json$LazyJsonModule.runToplevel (package:ceylon/dart/runtime/model/model.dart:3231:54)
#3      json$LazyJsonModule.runApplication (package:ceylon/dart/runtime/model/model.dart:3175:16)
#4      $run (package:ceylon/language/language.dart:16209:23)
#5      main (file:///tmp/ceylon-run-dart3727661573809872428/first/first.dart:35:3)
#6      _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:263)
#7      _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:151)

[jvasileff]

The dart backend contains a lot of code for the treatment of meta model code

Yeah, and there's a lot more code for this in the topic-reified-generics branch. But it's not quite finished yet.

FTR, with a patch for #58 and using the topic-reified-generics, the program works:

jvasileff@tau:tmp.Yboq6CCf$ cat source/simple/run.ceylon
shared void run(){
  value a = `String`;
   print(a);
}
jvasileff@tau:tmp.Yboq6CCf$ ceylon run-dart --compile simple
Source found for module simple, compiling...
Note: Created module simple/1.0.0
String (type)
jvasileff@tau:tmp.Yboq6CCf$