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package scala.tools.nsc
package doc
package model
import base._
/** This trait extracts all required information for documentation from compilation units */
trait MemberLookup extends base.MemberLookupBase {
thisFactory: ModelFactory =>
import global._
import definitions.{ NothingClass, AnyClass, AnyValClass, AnyRefClass, ListClass }
override def internalLink(sym: Symbol, site: Symbol): Option[LinkTo] =
findTemplateMaybe(sym) match {
case Some(tpl) => Some(LinkToTpl(tpl))
case None =>
findTemplateMaybe(site) flatMap { inTpl =>
inTpl.members find (_.asInstanceOf[EntityImpl].sym == sym) map (LinkToMember(_, inTpl))
}
}
override def chooseLink(links: List[LinkTo]): LinkTo = {
val mbrs = links.collect {
case lm@LinkToMember(mbr: MemberEntity, _) => (mbr, lm)
}
if (mbrs.isEmpty)
links.head
else
mbrs.min(Ordering[MemberEntity].on[(MemberEntity, LinkTo)](_._1))._2
}
override def toString(link: LinkTo) = link match {
case LinkToTpl(tpl: EntityImpl) => tpl.sym.toString
case LinkToMember(mbr: EntityImpl, inTpl: EntityImpl) =>
mbr.sym.signatureString + " in " + inTpl.sym.toString
case _ => link.toString
}
override def findExternalLink(sym: Symbol, name: String): Option[LinkToExternal] = {
val sym1 =
if (sym == AnyClass || sym == AnyRefClass || sym == AnyValClass || sym == NothingClass) ListClass
else if (sym.isPackage)
/* Get package object which has associatedFile ne null */
sym.info.member(newTermName("package"))
else sym
Option(sym1.associatedFile) flatMap (_.underlyingSource) flatMap { src =>
val path = src.canonicalPath
settings.extUrlMapping get path map { url =>
LinkToExternal(name, url + "#" + name)
}
}
}
override def warnNoLink = !settings.docNoLinkWarnings.value
}
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