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author | Eugene Burmako <xeno.by@gmail.com> | 2012-04-12 01:59:46 +0200 |
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committer | Eugene Burmako <xeno.by@gmail.com> | 2012-04-12 02:04:14 +0200 |
commit | 814cf34fb00f9ccb001249f4b3445ebc4f9942c9 (patch) | |
tree | 24dd54da571d27f10b0c482a6e08932c318fd7b2 /test/files/run/macro-reify-nested-b/Impls_Macros_1.scala | |
parent | db3056f11730da19e4e56f09f12e300bda62f57c (diff) | |
download | scala-814cf34fb00f9ccb001249f4b3445ebc4f9942c9.tar.gz scala-814cf34fb00f9ccb001249f4b3445ebc4f9942c9.tar.bz2 scala-814cf34fb00f9ccb001249f4b3445ebc4f9942c9.zip |
Next generation of macros
Implements SIP 16: Self-cleaning macros: http://bit.ly/wjjXTZ
Features:
* Macro defs
* Reification
* Type tags
* Manifests aliased to type tags
* Extended reflection API
* Several hundred tests
* 1111 changed files
Not yet implemented:
* Reification of refined types
* Expr.value splicing
* Named and default macro expansions
* Intricacies of interaction between macros and implicits
* Emission of debug information for macros (compliant with JSR-45)
Dedicated to Yuri Alekseyevich Gagarin
Diffstat (limited to 'test/files/run/macro-reify-nested-b/Impls_Macros_1.scala')
-rw-r--r-- | test/files/run/macro-reify-nested-b/Impls_Macros_1.scala | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/test/files/run/macro-reify-nested-b/Impls_Macros_1.scala b/test/files/run/macro-reify-nested-b/Impls_Macros_1.scala new file mode 100644 index 0000000000..1ce8f44671 --- /dev/null +++ b/test/files/run/macro-reify-nested-b/Impls_Macros_1.scala @@ -0,0 +1,43 @@ +import scala.reflect.makro.Context + +case class Utils[C <: Context]( c:C ) { + import c.mirror._ + import c.{Tree=>_} + object removeDoubleReify extends c.mirror.Transformer { + def apply( tree:Tree ) = transform(tree) + override def transform(tree: Tree): Tree = { + super.transform { + tree match { + case Apply(TypeApply(Select(_this, termname), _), reified::Nil ) + if termname.toString == "factory" => c.unreifyTree(reified) + case Apply(Select(_this, termname), reified::Nil ) + if termname.toString == "factory" => c.unreifyTree(reified) + case _ => tree + } + } + } + } +} +object QueryableMacros{ + def _helper[C <: Context,S:c.TypeTag]( c:C )( name:String, projection:c.mirror.Expr[_] ) = { + import c.mirror._ + val element_type = implicitly[c.TypeTag[S]].tpe + val foo = Expr[reflect.mirror.Expr[Queryable[S]]]( + c.reifyTree( c.reflectMirrorPrefix, c.typeCheck( + Utils[c.type](c).removeDoubleReify( + Apply(Select(c.prefix.tree, newTermName( name )), List( projection.tree )) + ).asInstanceOf[Tree] + ))) + c.reify{ Queryable.factory[S]( foo.eval )} + } + def map[T:c.TypeTag, S:c.TypeTag] + (c: scala.reflect.makro.Context) + (projection: c.mirror.Expr[T => S]): c.mirror.Expr[Queryable[S]] = _helper[c.type,S]( c )( "_map", projection ) +} +class Queryable[T]{ + def _map[S]( projection: T => S ) : Queryable[S] = ??? + def map[S]( projection: T => S ) : Queryable[S] = macro QueryableMacros.map[T,S] +} +object Queryable{ + def factory[S]( projection:scala.reflect.mirror.Expr[Queryable[S]] ) : Queryable[S] = null +}
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