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package scala
package reflect
/** Entry points into runtime reflection.
* See [[scala.reflect.api.package the overview page]] for details on how to use them.
*/
package object runtime {
/** The entry point into Scala runtime reflection.
*
* To use Scala runtime reflection, simply use or import `scala.reflect.runtime.universe._`
*
* See [[scala.reflect.api.Universe]] or the
* [[http://docs.scala-lang.org/overviews/reflection/environment-universes-mirrors.html Reflection Guide: Universes]]
* for more details.
*/
lazy val universe: api.JavaUniverse = new runtime.JavaUniverse
/** The runtime reflection mirror that corresponds to the current lexical context.
* It's typically equivalent to `universe.runtimeMirror(getClass.getClassLoader)` invoked at the call site.
*/
// implementation hardwired to the `currentMirror` method below
// using the mechanism implemented in `scala.tools.reflect.FastTrack`
def currentMirror: universe.Mirror = macro ???
}
package runtime {
private[scala] object Macros {
def currentMirror(c: scala.reflect.macros.BlackboxContext): c.Expr[universe.Mirror] = {
import c.universe._
val runtimeClass = c.reifyEnclosingRuntimeClass
if (runtimeClass.isEmpty) c.abort(c.enclosingPosition, "call site does not have an enclosing class")
val runtimeUniverse = Select(Select(Select(Ident(newTermName("scala")), newTermName("reflect")), newTermName("runtime")), newTermName("universe"))
val currentMirror = Apply(Select(runtimeUniverse, newTermName("runtimeMirror")), List(Select(runtimeClass, newTermName("getClassLoader"))))
c.Expr[Nothing](currentMirror)(c.WeakTypeTag.Nothing)
}
}
}
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