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Diffstat (limited to 'src/main/scala/xyz/driver/core/core.scala')
-rw-r--r-- | src/main/scala/xyz/driver/core/core.scala | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/main/scala/xyz/driver/core/core.scala b/src/main/scala/xyz/driver/core/core.scala new file mode 100644 index 0000000..b7fbeb6 --- /dev/null +++ b/src/main/scala/xyz/driver/core/core.scala @@ -0,0 +1,46 @@ +package xyz.driver + +import scalaz.Equal + +package object core { + import scala.language.reflectiveCalls + + def make[T](v: => T)(f: T => Unit): T = { + val value = v; f(value); value + } + + def using[R <: { def close() }, P](r: => R)(f: R => P): P = { + val resource = r + try { + f(resource) + } finally { + resource.close() + } + } + + object tagging { + private[core] trait Tagged[+V, +Tag] + } + type @@[+V, +Tag] = V with tagging.Tagged[V, Tag] + + type Id[+Tag] = Long @@ Tag + object Id { + def apply[Tag](value: Long) = value.asInstanceOf[Id[Tag]] + } + implicit def idEqual[T]: Equal[Id[T]] = Equal.equal[Id[T]](_ == _) + implicit def idOrdering[T]: Ordering[Id[T]] = Ordering.by(i => i: Long) + + type Name[+Tag] = String @@ Tag + object Name { + def apply[Tag](value: String) = value.asInstanceOf[Name[Tag]] + } + + implicit def nameEqual[T]: Equal[Name[T]] = Equal.equal[Name[T]](_ == _) + implicit def nameOrdering[T]: Ordering[Name[T]] = Ordering.by(n => n: String) + + object revision { + final case class Revision[T](id: String) + + implicit def revisionEqual[T]: Equal[Revision[T]] = Equal.equal[Revision[T]](_.id == _.id) + } +} |