From b9a900e5d2f32b87149f7bd4cc7531f327abf5be Mon Sep 17 00:00:00 2001 From: Den Shabalin Date: Mon, 9 Dec 2013 17:30:30 +0100 Subject: Test usage of SubpatternsAttachment from a macro --- test/files/run/macro-subpatterns/Macro_1.scala | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 test/files/run/macro-subpatterns/Macro_1.scala (limited to 'test/files/run/macro-subpatterns/Macro_1.scala') diff --git a/test/files/run/macro-subpatterns/Macro_1.scala b/test/files/run/macro-subpatterns/Macro_1.scala new file mode 100644 index 0000000000..d8e86e27c6 --- /dev/null +++ b/test/files/run/macro-subpatterns/Macro_1.scala @@ -0,0 +1,18 @@ +import scala.reflect.macros.WhiteboxContext +import language.experimental.macros + +object Extractor { + def unapply(x: Any): Any = macro unapplyImpl + def unapplyImpl(c: WhiteboxContext)(x: c.Tree) = { + val st = c.universe.asInstanceOf[reflect.internal.SymbolTable] + import st._ + val subpatterns = x.attachments.get[SubpatternsAttachment].get.patterns + q""" + new { + def isEmpty = false + def get = ${subpatterns.toString} + def unapply(x: Any) = this + }.unapply(${x.asInstanceOf[st.Tree]}) + """.asInstanceOf[c.Tree] + } +} -- cgit v1.2.3