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package scala.tools.nsc
import util.ScalaClassLoader
trait ClassLoaders { self: Global =>
def staticClass(fullname: String) = {
if (self.forMSIL)
throw new UnsupportedOperationException("Scala reflection not available on this platform")
getClass(newTypeName(fullname))
}
def staticModule(fullname: String) = {
if (self.forMSIL)
throw new UnsupportedOperationException("Scala reflection not available on this platform")
getModule(newTermName(fullname))
}
private def getClass(fullname: Name): Symbol = {
var result = getModuleOrClass(fullname.toTypeName)
while (result.isAliasType) result = result.info.typeSymbol
result
}
private def getModule(fullname: Name): Symbol =
getModuleOrClass(fullname.toTermName)
private def getModuleOrClass(path: Name): Symbol =
getModuleOrClass(path, path.length)
private def getModuleOrClass(path: Name, len: Int): Symbol = {
val point = path lastPos('.', len - 1)
val owner =
if (point > 0) getModuleOrClass(path.toTermName, point)
else definitions.RootClass
val name = path subName (point + 1, len)
val sym = owner.info member name
val result = if (path.isTermName) sym.suchThat(_ hasFlag symtab.Flags.MODULE) else sym
if (result != NoSymbol) result
else {
if (settings.debug.value) { log(sym.info); log(sym.info.members) }//debug
if (owner.isRoot && isJavaClass(name.toString))
definitions.EmptyPackageClass.info decl name
else {
def info(msg: => String) = if (settings.verbose.value) println(msg)
info("*** missing: "+name+"/"+name.isTermName+"/"+owner+"/"+owner.hasPackageFlag+"/"+owner.info.decls.getClass)
MissingRequirementError.notFound((if (path.isTermName) "object " else "class ")+path)
}
}
}
private def isJavaClass(path: String): Boolean =
try {
val classpath = platform.classPath.asURLs
var classLoader = ScalaClassLoader.fromURLs(classpath)
Class.forName(path, true, classLoader)
true
} catch {
case (_: ClassNotFoundException) | (_: NoClassDefFoundError) | (_: IncompatibleClassChangeError) =>
false
}
}
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