diff options
Diffstat (limited to 'test/files/run')
12 files changed, 205 insertions, 0 deletions
diff --git a/test/files/run/macro-bundle-context-alias.check b/test/files/run/macro-bundle-context-alias.check new file mode 100644 index 0000000000..55e4dfcf92 --- /dev/null +++ b/test/files/run/macro-bundle-context-alias.check @@ -0,0 +1,4 @@ +C +C +C +C diff --git a/test/files/run/macro-bundle-context-alias/Macros_1.scala b/test/files/run/macro-bundle-context-alias/Macros_1.scala new file mode 100644 index 0000000000..354c5e0d92 --- /dev/null +++ b/test/files/run/macro-bundle-context-alias/Macros_1.scala @@ -0,0 +1,38 @@ +import scala.language.experimental.macros +import scala.reflect.macros.blackbox.{Context => BlackboxContext} +import scala.reflect.macros.whitebox.{Context => WhiteboxContext} + +object Module { + type BBC = BlackboxContext + type RBBC = BBC { type PrefixType = C } + type WBC = WhiteboxContext + type RWBC = WBC { type PrefixType = C } + + class BlackboxBundle(val c: BBC) { + import c.universe._ + def impl = q"${c.prefix}" + } + + class RefinedBlackboxBundle(val c: RBBC) { + import c.universe._ + def impl = reify(c.prefix.splice) + } + + class WhiteboxBundle(val c: WBC) { + import c.universe._ + def impl = q"${c.prefix}" + } + + class RefinedWhiteboxBundle(val c: RWBC) { + import c.universe._ + def impl = reify(c.prefix.splice) + } +} + +class C { + def blackbox: C = macro Module.BlackboxBundle.impl + def refinedBlackbox: C = macro Module.RefinedBlackboxBundle.impl + def whitebox: C = macro Module.WhiteboxBundle.impl + def refinedWhitebox: C = macro Module.RefinedWhiteboxBundle.impl + override def toString = "C" +}
\ No newline at end of file diff --git a/test/files/run/macro-bundle-context-alias/Test_2.scala b/test/files/run/macro-bundle-context-alias/Test_2.scala new file mode 100644 index 0000000000..de499cc111 --- /dev/null +++ b/test/files/run/macro-bundle-context-alias/Test_2.scala @@ -0,0 +1,6 @@ +object Test extends App { + println(new C().blackbox) + println(new C().refinedBlackbox) + println(new C().whitebox) + println(new C().refinedWhitebox) +}
\ No newline at end of file diff --git a/test/files/run/macro-bundle-context-refinement.check b/test/files/run/macro-bundle-context-refinement.check new file mode 100644 index 0000000000..10f9ebb617 --- /dev/null +++ b/test/files/run/macro-bundle-context-refinement.check @@ -0,0 +1,2 @@ +C +C diff --git a/test/files/run/macro-bundle-context-refinement/Macros_1.scala b/test/files/run/macro-bundle-context-refinement/Macros_1.scala new file mode 100644 index 0000000000..d3a5d179c6 --- /dev/null +++ b/test/files/run/macro-bundle-context-refinement/Macros_1.scala @@ -0,0 +1,19 @@ +import scala.language.experimental.macros +import scala.reflect.macros.blackbox.{Context => BlackboxContext} +import scala.reflect.macros.whitebox.{Context => WhiteboxContext} + +class BlackboxBundle(val c: BlackboxContext { type PrefixType = C }) { + import c.universe._ + def impl = reify(c.prefix.splice) +} + +class WhiteboxBundle(val c: WhiteboxContext { type PrefixType = C }) { + import c.universe._ + def impl = reify(c.prefix.splice) +} + +class C { + def blackbox: C = macro BlackboxBundle.impl + def whitebox: C = macro WhiteboxBundle.impl + override def toString = "C" +}
\ No newline at end of file diff --git a/test/files/run/macro-bundle-context-refinement/Test_2.scala b/test/files/run/macro-bundle-context-refinement/Test_2.scala new file mode 100644 index 0000000000..43d641adeb --- /dev/null +++ b/test/files/run/macro-bundle-context-refinement/Test_2.scala @@ -0,0 +1,4 @@ +object Test extends App { + println(new C().blackbox) + println(new C().whitebox) +}
\ No newline at end of file diff --git a/test/files/run/macro-bundle-whitebox-use.check b/test/files/run/macro-bundle-whitebox-use-raw.check index 5679c5faba..5679c5faba 100644 --- a/test/files/run/macro-bundle-whitebox-use.check +++ b/test/files/run/macro-bundle-whitebox-use-raw.check diff --git a/test/files/run/macro-bundle-whitebox-use/Macros_1.scala b/test/files/run/macro-bundle-whitebox-use-raw/Macros_1.scala index de1863418e..de1863418e 100644 --- a/test/files/run/macro-bundle-whitebox-use/Macros_1.scala +++ b/test/files/run/macro-bundle-whitebox-use-raw/Macros_1.scala diff --git a/test/files/run/macro-bundle-whitebox-use/Test_2.scala b/test/files/run/macro-bundle-whitebox-use-raw/Test_2.scala index 3a81700251..3a81700251 100644 --- a/test/files/run/macro-bundle-whitebox-use/Test_2.scala +++ b/test/files/run/macro-bundle-whitebox-use-raw/Test_2.scala diff --git a/test/files/run/macro-bundle-whitebox-use-refined.check b/test/files/run/macro-bundle-whitebox-use-refined.check new file mode 100644 index 0000000000..5679c5faba --- /dev/null +++ b/test/files/run/macro-bundle-whitebox-use-refined.check @@ -0,0 +1,5 @@ +2 +(23,foo,true) +null +C2 +42 diff --git a/test/files/run/macro-bundle-whitebox-use-refined/Macros_1.scala b/test/files/run/macro-bundle-whitebox-use-refined/Macros_1.scala new file mode 100644 index 0000000000..de1863418e --- /dev/null +++ b/test/files/run/macro-bundle-whitebox-use-refined/Macros_1.scala @@ -0,0 +1,108 @@ +import scala.reflect.macros.whitebox.Context +import scala.language.experimental.macros + +// whitebox use case #1: return type refinement + +class ReturnTypeRefinementBundle(val c: Context) { + import c.universe._ + def impl = { + q""" + trait Foo { + def x = 2 + } + new Foo {} + """ + } +} + +object ReturnTypeRefinement { + def foo: Any = macro ReturnTypeRefinementBundle.impl +} + +// whitebox use case #2: fundep materialization + +trait FundepMaterialization[T, U] { + def to(t : T) : U + // def from(u : U) : T +} + +class FundepMaterializationBundle(val c: Context) { + import c.universe._ + import definitions._ + import Flag._ + + def impl[T: c.WeakTypeTag, U: c.WeakTypeTag]: c.Expr[FundepMaterialization[T, U]] = { + val sym = c.weakTypeOf[T].typeSymbol + if (!sym.isClass || !sym.asClass.isCaseClass) c.abort(c.enclosingPosition, s"$sym is not a case class") + val fields = sym.info.decls.toList.collect{ case x: TermSymbol if x.isVal && x.isCaseAccessor => x } + + def mkTpt() = { + val core = Ident(TupleClass(fields.length) orElse UnitClass) + if (fields.length == 0) core + else AppliedTypeTree(core, fields map (f => TypeTree(f.info))) + } + + def mkFrom() = { + if (fields.length == 0) Literal(Constant(Unit)) + else Apply(Ident(newTermName("Tuple" + fields.length)), fields map (f => Select(Ident(newTermName("f")), newTermName(f.name.toString.trim)))) + } + + val evidenceClass = ClassDef(Modifiers(FINAL), newTypeName("$anon"), List(), Template( + List(AppliedTypeTree(Ident(newTypeName("FundepMaterialization")), List(Ident(sym), mkTpt()))), + emptyValDef, + List( + DefDef(Modifiers(), termNames.CONSTRUCTOR, List(), List(List()), TypeTree(), Block(List(Apply(Select(Super(This(typeNames.EMPTY), typeNames.EMPTY), termNames.CONSTRUCTOR), List())), Literal(Constant(())))), + DefDef(Modifiers(), newTermName("to"), List(), List(List(ValDef(Modifiers(PARAM), newTermName("f"), Ident(sym), EmptyTree))), TypeTree(), mkFrom())))) + c.Expr[FundepMaterialization[T, U]](Block(List(evidenceClass), Apply(Select(New(Ident(newTypeName("$anon"))), termNames.CONSTRUCTOR), List()))) + } +} + +object FundepMaterialization { + implicit def materializeIso[T, U]: FundepMaterialization[T, U] = macro FundepMaterializationBundle.impl[T, U] +} + +// whitebox use case #3: dynamic materialization + +trait DynamicMaterialization[T] + +class C1(val x: Int) +class C2(val x: String) + +trait LowPriority { + implicit def lessSpecific[T]: DynamicMaterialization[T] = null +} + +object DynamicMaterialization extends LowPriority { + implicit def moreSpecific[T]: DynamicMaterialization[T] = macro DynamicMaterializationBundle.impl[T] +} + +class DynamicMaterializationBundle(val c: Context) { + import c.universe._ + def impl[T: c.WeakTypeTag] = { + val tpe = weakTypeOf[T] + if (tpe.members.exists(_.info =:= typeOf[Int])) + c.abort(c.enclosingPosition, "I don't like classes that contain integers") + q"new DynamicMaterialization[$tpe]{ override def toString = ${tpe.toString} }" + } +} + +// whitebox use case #4: extractor macros + +object ExtractorMacro { + def unapply(x: Int): Any = macro ExtractorBundle.unapplyImpl +} + +class ExtractorBundle(val c: Context) { + import c.universe._ + def unapplyImpl(x: Tree) = { + q""" + new { + class Match(x: Int) { + def isEmpty = false + def get = x + } + def unapply(x: Int) = new Match(x) + }.unapply($x) + """ + } +} diff --git a/test/files/run/macro-bundle-whitebox-use-refined/Test_2.scala b/test/files/run/macro-bundle-whitebox-use-refined/Test_2.scala new file mode 100644 index 0000000000..3a81700251 --- /dev/null +++ b/test/files/run/macro-bundle-whitebox-use-refined/Test_2.scala @@ -0,0 +1,19 @@ +object Test extends App { + println(ReturnTypeRefinement.foo.x) + + case class Foo(i: Int, s: String, b: Boolean) + def foo[C, L](c: C)(implicit iso: FundepMaterialization[C, L]): L = iso.to(c) + locally { + val equiv = foo(Foo(23, "foo", true)) + def typed[T](t: => T) {} + typed[(Int, String, Boolean)](equiv) + println(equiv) + } + + println(implicitly[DynamicMaterialization[C1]]) + println(implicitly[DynamicMaterialization[C2]]) + + 42 match { + case ExtractorMacro(x) => println(x) + } +} |