mirror of https://github.com/sbt/sbt.git
50 lines
1.7 KiB
Scala
50 lines
1.7 KiB
Scala
/* sbt -- Simple Build Tool
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* Copyright 2011 Mark Harrah
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*/
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package sbt
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import Keys._
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import complete.{DefaultParsers, Parser}
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import DefaultParsers._
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object Cross
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{
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final val Switch = "++"
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final val Cross = "+"
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def switchParser(state: State): Parser[(String, String)] =
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{
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val knownVersions = crossVersions(state)
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token(Switch ~ Space) flatMap { _ => token(NotSpace.examples(knownVersions : _*)) ~ (token(Space ~> matched(state.combinedParser)) ?? "") }
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}
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lazy val switchVersion = Command.arb(requireSession(switchParser)) { case (state, (version, command)) =>
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val x = Project.extract(state)
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import x._
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val add = (scalaVersion :== version) :: (scalaHome :== None) :: Nil
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val append = Load.transformSettings(Load.projectScope(currentRef), currentRef.build, rootProject, add)
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val newStructure = Load.reapply(session.original ++ append, structure)
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Project.setProject(session, newStructure, command :: state)
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}
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def crossParser(state: State): Parser[String] =
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token(Cross ~ Space) flatMap { _ => token(matched(state.combinedParser)) }
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lazy val crossBuild = Command.arb(requireSession(crossParser)) { (state, command) =>
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val x = Project.extract(state)
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import x._
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val versions = crossVersions(state)
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val current = scalaVersion in currentRef get structure.data map(Switch + " " + _) toList;
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if(versions.isEmpty) command :: state else versions.map(Switch + " " + _ + " " + command) ::: current ::: state
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}
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def crossVersions(state: State): Seq[String] =
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{
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val x = Project.extract(state)
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import x._
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crossScalaVersions in currentRef get structure.data getOrElse Nil
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}
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def requireSession[T](p: State => Parser[T]): State => Parser[T] = s =>
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if(s get sessionSettings isEmpty) failure("No project loaded") else p(s)
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} |