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package dotty.tools.dotc.core
import Names.Name
import Contexts.Context
import Types.{Type, TypeBounds}
/** A common super trait of Symbol and Refinement.
* Used to capture the attributes of type parameters
* which can be implemented as either symbols or refinements.
*/
trait MemberBinding {
/** Does this binding represent a type parameter?
* Only in that case the rest of the binding's methods are significant.
*/
def isTypeParam(implicit ctx: Context): Boolean
/** The name of the member */
def memberName(implicit ctx: Context): Name
/** The info of the member */
def memberBounds(implicit ctx: Context): TypeBounds
/** The info of the member as seen from a prefix type.
* This can be different from `memberInfo` if the binding
* is a type symbol of a class.
*/
def memberBoundsAsSeenFrom(pre: Type)(implicit ctx: Context): TypeBounds
/** The variance of the type parameter
* @pre: isTypeParam = true
*/
def memberVariance(implicit ctx: Context): Int
}
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