Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

macros don't work with value classes #6485

Closed
scabug opened this issue Oct 7, 2012 · 4 comments
Closed

macros don't work with value classes #6485

scabug opened this issue Oct 7, 2012 · 4 comments
Assignees
Labels
Milestone

Comments

@scabug
Copy link

@scabug scabug commented Oct 7, 2012

I realize I'm pushing the envelope here, but it would be really useful, plus it just bugs me when the compiler's left hand doesn't know what the right hand is transforming.

import scala.language.experimental.macros
import scala.reflect.macros.Context

final class Ops[T](val x: T) extends AnyVal {
  def f = macro Macros.crash
}

object Macros {
  def crash(c: Context): c.Expr[Unit] = c.universe.reify(())
}
uncaught exception during compilation: scala.reflect.internal.Types$TypeError
error: scala.reflect.internal.Types$TypeError: macro implementation not found: extension$f (the most common reason for that is that you cannot use macro implementations in the same compilation run that defines them)
  at scala.tools.nsc.typechecker.Contexts$Context.error(Contexts.scala:403)
@scabug

This comment has been minimized.

Copy link
Author

@scabug scabug commented Oct 7, 2012

Imported From: https://issues.scala-lang.org/browse/SI-6485?orig=1
Reporter: @paulp
Other Milestones: 2.10.0

@scabug

This comment has been minimized.

Copy link
Author

@scabug scabug commented Oct 8, 2012

@xeno-by said:
Here's a different error if one compiles a macro and its usage separately:

C:\Projects\Kepler\sandbox @ topic/paramss>myke run .
error:
     while compiling: Test_2.scala
        during phase: extmethods
     library version: version 2.10.0-20121007-121305-65ed97ed55
    compiler version: version 2.10.0-20121007-121305-65ed97ed55
  reconstructed args: -language:experimental.macros

  last tree to typer: This(class Ops)
              symbol: class Ops (flags: final)
   symbol definition: final class Ops[T] extends AnyVal
                 tpe: Ops[T]
       symbol owners: class Ops -> package <empty>
      context owners: macro method f -> class Ops -> package <empty>

== Enclosing template or block ==

Apply( // final def extension$f[T]($this: Ops[T]): Unit in object Ops
  TypeApply( // final def extension$f[T]($this: Ops[T]): Unit in object Ops, tree.tpe=($this: Ops[T])Unit
    "Ops"."extension$f" // final def extension$f[T]($this: Ops[T]): Unit in object Ops, tree.tpe=[T]($this: Ops[T])Unit
    <tpt> // tree.tpe=T
  )
  This("Ops")final class Ops[T] extends AnyVal, tree.tpe=Ops[T]
)

== Expanded type of tree ==

TypeRef(
  TypeSymbol(final class Ops[T] extends AnyVal)
  args = List(TypeParamTypeRef(TypeParam(T)))
)

uncaught exception during compilation: scala.reflect.internal.Types$TypeError
error: scala.reflect.internal.Types$TypeError: exception during macro expansion:
java.lang.IllegalArgumentException: wrong number of arguments

        at scala.tools.nsc.typechecker.Contexts$Context.error(Contexts.scala:403)
        at scala.tools.nsc.typechecker.ContextErrors$TyperContextErrors$TyperErrorGen$.macroExpansionError(ContextErrors.scala:680)
        at scala.tools.nsc.typechecker.ContextErrors$TyperContextErrors$TyperErrorGen$.MacroGeneratedException(ContextErrors.scala:739)
        at scala.tools.nsc.typechecker.Macros$class.liftedTree1$1(Macros.scala:791)
        at scala.tools.nsc.typechecker.Macros$class.scala$tools$nsc$typechecker$Macros$$macroExpandWithRuntime(Macros.scala:768)
        at scala.tools.nsc.typechecker.Macros$$anonfun$scala$tools$nsc$typechecker$Macros$$macroExpand1$1.apply(Macros.scala:741)
        at scala.tools.nsc.typechecker.Macros$$anonfun$scala$tools$nsc$typechecker$Macros$$macroExpand1$1.apply(Macros.scala:732)
        at scala.tools.nsc.Global.withInfoLevel(Global.scala:189)
        at scala.tools.nsc.typechecker.Macros$class.scala$tools$nsc$typechecker$Macros$$macroExpand1(Macros.scala:732)
        at scala.tools.nsc.typechecker.Macros$class.macroExpand(Macros.scala:697)
        at scala.tools.nsc.Global$$anon$1.macroExpand(Global.scala:490)
        at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1115)
        at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5448)
        at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5490)
        at scala.tools.nsc.typechecker.Typers$Typer.typedPos(Typers.scala:5494)
        at scala.tools.nsc.transform.ExtensionMethods$Extender$$anonfun$9.apply(ExtensionMethods.scala:175)
        at scala.tools.nsc.transform.ExtensionMethods$Extender$$anonfun$9.apply(ExtensionMethods.scala:175)
        at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:1938)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:34)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:28)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:174)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:102)
        at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:1931)
        at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:1929)
        at scala.collection.immutable.List.loop$1(List.scala:164)
        at scala.collection.immutable.List.mapConserve(List.scala:180)
        at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:1929)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transformStats(ExtensionMethods.scala:188)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transformStats(ExtensionMethods.scala:102)
        at scala.reflect.internal.Trees$class.itransform(Trees.scala:1234)
        at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:12)
        at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:12)
        at scala.reflect.api.Trees$Transformer.transform(Trees.scala:1910)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.scala$tools$nsc$transform$TypingTransformers$TypingTransformer$$super$transform(TypingTransformers.scala:44)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$transform$1.apply(TypingTransformers.scala:44)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$transform$1.apply(TypingTransformers.scala:44)
        at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:1938)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:34)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:28)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:44)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:144)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:102)
        at scala.reflect.api.Trees$Transformer.transformTemplate(Trees.scala:1915)
        at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1238)
        at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1237)
        at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:1938)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:34)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:28)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:19)
        at scala.reflect.internal.Trees$class.itransform(Trees.scala:1236)
        at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:12)
        at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:12)
        at scala.reflect.api.Trees$Transformer.transform(Trees.scala:1910)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:48)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:183)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:102)
        at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:1931)
        at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:1929)
        at scala.collection.immutable.List.loop$1(List.scala:164)
        at scala.collection.immutable.List.mapConserve(List.scala:180)
        at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:1929)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transformStats(ExtensionMethods.scala:188)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transformStats(ExtensionMethods.scala:102)
        at scala.reflect.internal.Trees$$anonfun$itransform$7.apply(Trees.scala:1256)
        at scala.reflect.internal.Trees$$anonfun$itransform$7.apply(Trees.scala:1256)
        at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:1938)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:34)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:28)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:19)
        at scala.reflect.internal.Trees$class.itransform(Trees.scala:1255)
        at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:12)
        at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:12)
        at scala.reflect.api.Trees$Transformer.transform(Trees.scala:1910)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.scala$tools$nsc$transform$TypingTransformers$TypingTransformer$$super$transform(TypingTransformers.scala:44)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$transform$2.apply(TypingTransformers.scala:46)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$transform$2.apply(TypingTransformers.scala:46)
        at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:1938)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:34)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:28)
        at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:46)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:183)
        at scala.tools.nsc.transform.ExtensionMethods$Extender.transform(ExtensionMethods.scala:102)
        at scala.tools.nsc.ast.Trees$Transformer.transformUnit(Trees.scala:227)
        at scala.tools.nsc.transform.Transform$Phase.apply(Transform.scala:30)
        at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:461)
        at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:428)
        at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:428)
        at scala.collection.Iterator$class.foreach(Iterator.scala:727)
        at scala.collection.AbstractIterator.foreach(Iterator.scala:1156)
        at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:428)
        at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1574)
        at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1548)
        at scala.tools.nsc.Global$Run.compileSources(Global.scala:1544)
        at scala.tools.nsc.Global$Run.compile(Global.scala:1654)
        at scala.tools.nsc.Driver.doCompile(Driver.scala:33)
        at scala.tools.nsc.Main$.doCompile(Main.scala:79)
        at scala.tools.nsc.Driver.process(Driver.scala:54)
        at scala.tools.nsc.Driver.main(Driver.scala:67)
        at scala.tools.nsc.Main.main(Main.scala)
@scabug

This comment has been minimized.

Copy link
Author

@scabug scabug commented Oct 8, 2012

@scabug

This comment has been minimized.

Copy link
Author

@scabug scabug commented Oct 8, 2012

@xeno-by said:
Fixed in scala/scala@0bf9daa

@scabug scabug closed this Oct 8, 2012
@scabug scabug added this to the 2.10.0-M7 milestone Apr 7, 2017
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Linked pull requests

Successfully merging a pull request may close this issue.

None yet
2 participants
You can’t perform that action at this time.