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package macroExpand
import scala.tools.nsc.Global
import scala.tools.nsc.plugins.{Plugin => NscPlugin}
class Plugin(val global: Global) extends NscPlugin {
import global._
import analyzer._
import scala.reflect.internal.Mode
val name = "macroExpand"
val description = "A sample analyzer plugin that overrides macroExpand."
val components = Nil
addMacroPlugin(MacroPlugin)
object MacroPlugin extends MacroPlugin {
override def pluginsMacroExpand(typer: Typer, expandee: Tree, mode: Mode, pt: Type): Option[Tree] = {
object expander extends DefMacroExpander(typer, expandee, mode, pt) {
override def onSuccess(expanded: Tree) = {
val message = s"expanded into ${expanded.toString}"
typer.typed(q"println($message)")
}
}
Some(expander(expandee))
}
}
}
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