diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/main/scala/scala/async/internal/AsyncTransform.scala | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/main/scala/scala/async/internal/AsyncTransform.scala b/src/main/scala/scala/async/internal/AsyncTransform.scala index fa0eec7..2f45034 100644 --- a/src/main/scala/scala/async/internal/AsyncTransform.scala +++ b/src/main/scala/scala/async/internal/AsyncTransform.scala @@ -49,7 +49,15 @@ trait AsyncTransform { List(emptyConstructor, stateVar) ++ resultAndAccessors ++ List(execContextValDef) ++ List(applyDefDefDummyBody, apply0DefDef) } - val tryToUnit = appliedType(definitions.FunctionClass(1), futureSystemOps.tryType[Any], typeOf[Unit]) + val customParents = futureSystemOps.stateMachineClassParents + val tycon = if (customParents.exists(!_.typeSymbol.asClass.isTrait)) { + // prefer extending a class to reduce the class file size of the state machine. + symbolOf[scala.runtime.AbstractFunction1[Any, Any]] + } else { + // ... unless a custom future system already extends some class + symbolOf[scala.Function1[Any, Any]] + } + val tryToUnit = appliedType(tycon, futureSystemOps.tryType[Any], typeOf[Unit]) val template = Template((futureSystemOps.stateMachineClassParents ::: List(tryToUnit, typeOf[() => Unit])).map(TypeTree(_)), emptyValDef, body) val t = ClassDef(NoMods, name.stateMachineT, Nil, template) |