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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2006-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala
/** <p>
* A marker for annotations that, when applied to a type,
* should be treated as a constraint on the annotated type.
* A proper constraint should restrict the type based only
* on information mentioned within the type. A Scala compiler
* can use this assumption to rewrite the contents of the
* constraint as necessary. To contrast, a type annotation
* whose meaning depends on the context where it is written
* down is not a proper constrained type, and this marker
* should not be applied. A Scala compiler will drop such
* annotations in cases where it would rewrite a type constraint.
* </p>
*
* @author Lex Spoon
* @version 1.1, 2007-11-5
* @since 2.6
*/
trait TypeConstraint extends Annotation
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