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/* NSC -- new Scala compiler
* Copyright 2005-2013 LAMP/EPFL
* @author Paul Phillips
*/
package scala.tools.nsc
package interpreter
import Completion._
/** An implementation-agnostic completion interface which makes no
* reference to the jline classes.
*/
trait Completion {
type ExecResult
def resetVerbosity(): Unit
def completer(): ScalaCompleter
}
object NoCompletion extends Completion {
type ExecResult = Nothing
def resetVerbosity() = ()
def completer() = NullCompleter
}
object Completion {
case class Candidates(cursor: Int, candidates: List[String]) { }
val NoCandidates = Candidates(-1, Nil)
object NullCompleter extends ScalaCompleter {
def complete(buffer: String, cursor: Int): Candidates = NoCandidates
}
trait ScalaCompleter {
def complete(buffer: String, cursor: Int): Candidates
}
def looksLikeInvocation(code: String) = (
(code != null)
&& (code startsWith ".")
&& !(code == ".")
&& !(code startsWith "./")
&& !(code startsWith "..")
)
object Forwarder {
def apply(forwardTo: () => Option[CompletionAware]): CompletionAware = new CompletionAware {
def completions(verbosity: Int) = forwardTo() map (_ completions verbosity) getOrElse Nil
override def follow(s: String) = forwardTo() flatMap (_ follow s)
}
}
}
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