Scala Macros: Generated class fails to compile with unimplemented members -


my problem generated class' members not getting recognised implemented. being built scala 2.10/2.11/2.12 2.11 being default. using macroparadise 2.10.

goal of mark traits freezable , generate implementation class each takes scala.util.try each method freezable have get method called when accessing data. unfreezable methods filled in throw new illegalstateexception. , custom freeze method created creates instance of frozen class filled in data needed using methods defined trait.

i have set annotation macro placed on traits , generate companion object inner class called frozen below:

{   abstract trait javainfo extends scala.anyref {     @new canfreeze() def isjavainfo: boolean;     @new cannotfreeze() def tojavainfo: anyref   };   object javainfo extends scala.anyref {     def <init>() = {       super.<init>();       ()     };     class frozen extends javainfo java.io.serializable {       <paramaccessor> private val $isjavainfo: scala.util.try[boolean] = _;       def <init>($isjavainfo: scala.util.try[boolean]) = {         super.<init>();         ()       };       override def isjavainfo: boolean = this.$isjavainfo.get;       override def tojavainfo: anyref = throw new illegalstateexception("method not frozen!")     };     def freeze(valuetofreeze: javainfo): frozen = new frozen(scala.util.try.apply(valuetofreeze.isjavainfo))   };   () }

the following error occurs when try run macro on trait javainfo:

[error] /users/senk/projects/scala-debugger/scala-debugger-api/src/main/scala/org/scaladebugger/api/profiles/traits/info/javainfo.scala:9: class frozen needs abstract, since: [error] has 2 unimplemented members. [error] /** seen class frozen, missing signatures follows. [error]  *  convenience, these usable stub implementations. [error]  */ [error]   override def isjavainfo: boolean = ??? [error]   override def tojavainfo: anyref = ??? [error] @freezable trait javainfo { [error]  ^ [error] 1 error found

the trait follows:

import org.scaladebugger.macros.freeze.{canfreeze, cannotfreeze, freezable}  @freezable trait javainfo {   @canfreeze def isjavainfo: boolean   @cannotfreeze def tojavainfo: anyref }

get error nothing has been implemented frozen class, though see implementation in tree i'm building.

code in question here: https://github.com/chipsenkbeil/scala-debugger/blob/addfreezablemacrosupport/scala-debugger-macros/src/main/scala/org/scaladebugger/macros/freeze/freezablemacro.scala

you can test failure checking out branch , running sbt scaladebuggerapi/compile, compile macros project scala 2.11 followed api itself.

figured out. creating methods , implementing bodies, reusing old modifiers of each method , tacking on flag.override: flagset. turns out unimplemented methods have flag.deferred on them, producing modifiers(override | deferred), didn't make sense considering had body. seems having modifier of deferred cause compiler ignore body when checking method, though body show in byte code itself.


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