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Macros do not work with type arguments #5451

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scabug opened this issue Feb 9, 2012 · 2 comments
Closed

Macros do not work with type arguments #5451

scabug opened this issue Feb 9, 2012 · 2 comments
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@scabug scabug commented Feb 9, 2012

case class Queryable[T]{
  def macro map[S]( projection: T => S ) : Queryable[S] = ???
}
trait CoffeesTable{
  def name : String
}
object Test extends App{
  val q = new Queryable[CoffeesTable]
  q.map( _.name )
}
TestQueryable.scala:7: error: exception during macro expansion: 
java.lang.IllegalArgumentException: argument type mismatch
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at scala.reflect.runtime.Mirror.invoke(Mirror.scala:46)
  at scala.tools.nsc.typechecker.Macros$class.macroExpand(Macros.scala:151)
  at scala.tools.nsc.Global$$anon$1.macroExpand(Global.scala:437)
  at scala.tools.nsc.typechecker.Typers$Typer.expandMacro(Typers.scala:4503)
  at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:945)
  at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:4465)
  at scala.tools.nsc.typechecker.Typers$Typer.typedStat$1(Typers.scala:2117)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27$$anonfun$28.apply(Typers.scala:2210)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27$$anonfun$28.apply(Typers.scala:2210)
  at scala.collection.immutable.List.loop$1(List.scala:151)
  at scala.collection.immutable.List.mapConserve(List.scala:167)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27.apply(Typers.scala:2210)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27.apply(Typers.scala:2209)
  at scala.tools.nsc.typechecker.Typers$Typer.withSavedContext(Typers.scala:497)
  at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:2209)
  at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:1538)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$13.apply(Typers.scala:1447)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$13.apply(Typers.scala:1447)
  at scala.tools.nsc.typechecker.Typers$Typer.typerReportAnyContextErrors(Typers.scala:488)
  at scala.tools.nsc.typechecker.Typers$Typer.typedModuleDef(Typers.scala:1446)
  at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:4124)
  at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:4456)
  at scala.tools.nsc.typechecker.Typers$Typer.typedStat$1(Typers.scala:2117)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27$$anonfun$28.apply(Typers.scala:2210)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27$$anonfun$28.apply(Typers.scala:2210)
  at scala.collection.immutable.List.loop$1(List.scala:151)
  at scala.collection.immutable.List.mapConserve(List.scala:167)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27.apply(Typers.scala:2210)
  at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27.apply(Typers.scala:2209)
  at scala.tools.nsc.typechecker.Typers$Typer.withSavedContext(Typers.scala:497)
  at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:2209)
  at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:4117)
  at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:4456)
  at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:4521)
  at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.apply(Analyzer.scala:96)
  at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:408)
  at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:88)
  at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:88)
  at scala.collection.Iterator$class.foreach(Iterator.scala:687)
  at scala.collection.AbstractIterator.foreach(Iterator.scala:1112)
  at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.run(Analyzer.scala:88)
  at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1196)
  at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1169)
  at scala.tools.nsc.Global$Run.compileSources(Global.scala:1163)
  at scala.tools.nsc.Global$Run.compile(Global.scala:1293)
  at scala.tools.nsc.Driver.doCompile(Driver.scala:31)
  at scala.tools.nsc.Main$.doCompile(Main.scala:81)
  at scala.tools.nsc.Driver.process(Driver.scala:52)
  at scala.tools.nsc.Driver.main(Driver.scala:65)
  at scala.tools.nsc.Main.main(Main.scala)

    q.map( _.name )
         ^
one error found
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@scabug scabug commented Feb 9, 2012

Imported From: https://issues.scala-lang.org/browse/SI-5451?orig=1
Reporter: @xeno-by
Affected Versions: 2.10.0
Other Milestones: 2.10.0

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@scabug scabug commented Feb 10, 2012

@xeno-by said:
Fixed by scala/scala@34233f0

@scabug scabug closed this Feb 10, 2012
@scabug scabug added the macros label Apr 7, 2017
@scabug scabug added this to the 2.10.0-M1 milestone Apr 7, 2017
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