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/* NSC -- new Scala compiler
* Copyright 2005-2013 LAMP/EPFL
* @author Paul Phillips
*/
package scala.tools.nsc
package backend
import io.AbstractFile
import scala.tools.nsc.classpath.{AggregateFlatClassPath, FlatClassPath}
import scala.tools.nsc.settings.ClassPathRepresentationType
import scala.tools.nsc.util.{ClassFileLookup, ClassPath, MergedClassPath}
import scala.tools.util.FlatClassPathResolver
import scala.tools.util.PathResolver
trait JavaPlatform extends Platform {
val global: Global
override val symbolTable: global.type = global
import global._
import definitions._
private[nsc] var currentClassPath: Option[MergedClassPath[AbstractFile]] = None
def classPath: ClassPath[AbstractFile] = {
assert(settings.YclasspathImpl.value == ClassPathRepresentationType.Recursive,
"To use recursive classpath representation you must enable it with -YclasspathImpl:recursive compiler option.")
if (currentClassPath.isEmpty) currentClassPath = Some(new PathResolver(settings).result)
currentClassPath.get
}
private[nsc] var currentFlatClassPath: Option[FlatClassPath] = None
private[nsc] def flatClassPath: FlatClassPath = {
assert(settings.YclasspathImpl.value == ClassPathRepresentationType.Flat,
"To use flat classpath representation you must enable it with -YclasspathImpl:flat compiler option.")
if (currentFlatClassPath.isEmpty) currentFlatClassPath = Some(new FlatClassPathResolver(settings).result)
currentFlatClassPath.get
}
/** Update classpath with a substituted subentry */
def updateClassPath(subst: Map[ClassFileLookup[AbstractFile], ClassFileLookup[AbstractFile]]) = global.classPath match {
case cp: ClassPath[AbstractFile] =>
val s = subst.asInstanceOf[Map[ClassPath[AbstractFile], ClassPath[AbstractFile]]]
currentClassPath = Some(new MergedClassPath(cp.entries map (e => s.getOrElse(e, e)), cp.context))
case AggregateFlatClassPath(entries) =>
val s = subst.asInstanceOf[Map[FlatClassPath, FlatClassPath]]
currentFlatClassPath = Some(AggregateFlatClassPath(entries map (e => s.getOrElse(e, e))))
case cp: FlatClassPath =>
currentFlatClassPath = Some(subst.getOrElse(cp, cp).asInstanceOf[FlatClassPath])
}
def platformPhases = List(
flatten, // get rid of inner classes
genBCode // generate .class files
)
lazy val externalEquals = getDecl(BoxesRunTimeClass, nme.equals_)
lazy val externalEqualsNumNum = getDecl(BoxesRunTimeClass, nme.equalsNumNum)
lazy val externalEqualsNumChar = getDecl(BoxesRunTimeClass, nme.equalsNumChar)
lazy val externalEqualsNumObject = getDecl(BoxesRunTimeClass, nme.equalsNumObject)
/** We could get away with excluding BoxedBooleanClass for the
* purpose of equality testing since it need not compare equal
* to anything but other booleans, but it should be present in
* case this is put to other uses.
*/
def isMaybeBoxed(sym: Symbol) = {
(sym == ObjectClass) ||
(sym == JavaSerializableClass) ||
(sym == ComparableClass) ||
(sym isNonBottomSubClass BoxedNumberClass) ||
(sym isNonBottomSubClass BoxedCharacterClass) ||
(sym isNonBottomSubClass BoxedBooleanClass)
}
def needCompile(bin: AbstractFile, src: AbstractFile) =
src.lastModified >= bin.lastModified
}
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