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/* NEST (New Scala Test)
* Copyright 2007-2008 LAMP/EPFL
* @author Philipp Haller
*/
// $Id$
package scala.tools.partest.nest
import scala.tools.nsc.{Global, Settings, CompilerCommand}
import scala.tools.nsc.reporters.{Reporter, ConsoleReporter}
import java.io.{File, BufferedReader, PrintWriter, FileWriter, StringWriter}
class ExtConsoleReporter(override val settings: Settings, reader: BufferedReader, var writer: PrintWriter) extends ConsoleReporter(settings, reader, writer) {
def this(settings: Settings) = {
this(settings, Console.in, new PrintWriter(new FileWriter("/dev/null")))
}
def hasWarnings: Boolean = WARNING.count != 0
}
abstract class SimpleCompiler {
def compile(file: File, kind: String): Boolean
def compile(file: File, kind: String, log: File): Boolean
}
class TestSettings extends {
override val bootclasspathDefault =
System.getProperty("sun.boot.class.path", "")
override val extdirsDefault =
System.getProperty("java.ext.dirs", "")
} with Settings(x => ())
class DirectCompiler(val fileManager: FileManager) extends SimpleCompiler {
def newGlobal(settings: Settings, reporter: Reporter): Global =
new Global(settings, reporter)
def newGlobal(settings: Settings, logWriter: FileWriter): Global = {
val rep = new ExtConsoleReporter(new TestSettings,
Console.in,
new PrintWriter(logWriter))
rep.shortname = true
newGlobal(settings, rep)
}
def newSettings = {
val settings = new TestSettings
settings.deprecation.value = true
settings.nowarnings.value = false
settings.encoding.value = "iso-8859-1"
settings
}
def newReporter(sett: Settings) = new ExtConsoleReporter(sett,
Console.in,
new PrintWriter(new StringWriter))
def compile(file: File, kind: String, log: File): Boolean = {
val testSettings = newSettings
val logWriter = new FileWriter(log)
val args = List.fromArray(fileManager.SCALAC_OPTS.split("\\s"))
val command = new CompilerCommand(args, testSettings, x => {}, false)
val global = newGlobal(command.settings, logWriter)
val testRep: ExtConsoleReporter = global.reporter.asInstanceOf[ExtConsoleReporter]
val test: TestFile = kind match {
case "pos" => PosTestFile(file, fileManager)
case "neg" => NegTestFile(file, fileManager)
case "run" => RunTestFile(file, fileManager)
case "jvm" => JvmTestFile(file, fileManager)
case "jvm5" => Jvm5TestFile(file, fileManager)
case "shootout" => ShootoutTestFile(file, fileManager)
}
test.defineSettings(testSettings)
val toCompile = List(file.getPath)
try {
(new global.Run) compile toCompile
testRep.printSummary
testRep.writer.flush
testRep.writer.close
} catch {
case e: Exception =>
e.printStackTrace()
return false
} finally {
logWriter.close()
}
!testRep.hasErrors
}
def compile(file: File, kind: String): Boolean = {
val testSettings = newSettings
val testRep = newReporter(testSettings)
val args = List.fromArray(fileManager.SCALAC_OPTS.split("\\s"))
val command = new CompilerCommand(args, testSettings, x => {}, false)
val global = newGlobal(command.settings, testRep)
val test: TestFile = kind match {
case "pos" => PosTestFile(file, fileManager)
case "neg" => NegTestFile(file, fileManager)
case "run" => RunTestFile(file, fileManager)
case "jvm" => JvmTestFile(file, fileManager)
case "jvm5" => Jvm5TestFile(file, fileManager)
case "shootout" => ShootoutTestFile(file, fileManager)
}
test.defineSettings(testSettings)
val toCompile = List(file.getPath)
try {
(new global.Run) compile toCompile
testRep.printSummary
testRep.writer.flush
testRep.writer.close
} catch {
case e: Exception =>
e.printStackTrace()
return false
}
!testRep.hasErrors
}
}
class ReflectiveCompiler(val fileManager: ConsoleFileManager) extends SimpleCompiler {
import fileManager.{latestCompFile, latestPartestFile}
val sepUrls = Array(latestCompFile.toURL, latestPartestFile.toURL)
//NestUI.verbose("constructing URLClassLoader from URLs "+latestCompFile+" and "+latestPartestFile)
val sepLoader = new java.net.URLClassLoader(sepUrls, null)
val sepCompilerClass =
sepLoader.loadClass("scala.tools.partest.nest.DirectCompiler")
val sepCompiler = sepCompilerClass.newInstance()
// needed for reflective invocation
val fileClass = Class.forName("java.io.File")
val stringClass = Class.forName("java.lang.String")
val sepCompileMethod =
sepCompilerClass.getMethod("compile", Array(fileClass, stringClass): _*)
val sepCompileMethod2 =
sepCompilerClass.getMethod("compile", Array(fileClass, stringClass, fileClass): _*)
/* This method throws java.lang.reflect.InvocationTargetException
* if the compiler crashes.
* This exception is handled in the shouldCompile and shouldFailCompile
* methods of class CompileManager.
*/
def compile(file: File, kind: String): Boolean = {
val fileArgs: Array[AnyRef] = Array(file, kind)
val res = sepCompileMethod.invoke(sepCompiler, fileArgs: _*).asInstanceOf[java.lang.Boolean]
res.booleanValue()
}
/* This method throws java.lang.reflect.InvocationTargetException
* if the compiler crashes.
* This exception is handled in the shouldCompile and shouldFailCompile
* methods of class CompileManager.
*/
def compile(file: File, kind: String, log: File): Boolean = {
val fileArgs: Array[AnyRef] = Array(file, kind, log)
val res = sepCompileMethod2.invoke(sepCompiler, fileArgs: _*).asInstanceOf[java.lang.Boolean]
res.booleanValue()
}
}
class CompileManager(val fileManager: FileManager) {
import scala.actors.Actor._
import scala.actors.{Actor, Exit, TIMEOUT}
var compiler: SimpleCompiler = new /*ReflectiveCompiler*/ DirectCompiler(fileManager)
var numSeparateCompilers = 1
def createSeparateCompiler() = {
numSeparateCompilers += 1
compiler = new /*ReflectiveCompiler*/ DirectCompiler(fileManager)
}
val delay = fileManager.timeout.toLong
def withTimeout(file: File)(thunk: => Boolean): Boolean = {
createSeparateCompiler()
val parent = self
self.trapExit = true
val child = link {
parent ! (self, thunk)
}
receiveWithin(delay) {
case TIMEOUT =>
println("compilation timed out")
false
case Exit(from, reason) if from == child =>
val From = from
reason match {
case 'normal =>
receive {
case (From, result: Boolean) => result
}
case t: Throwable =>
NestUI.verbose("while invoking compiler ("+file+"):")
NestUI.verbose("caught "+t)
t.printStackTrace
if (t.getCause != null)
t.getCause.printStackTrace
false
}
}
}
/* This method returns true iff compilation succeeds.
*/
def shouldCompile(file: File, kind: String, log: File): Boolean =
withTimeout(file) {
compiler.compile(file, kind, log)
}
/* This method returns true iff compilation fails
* _and_ the compiler does _not_ crash or loop.
*
* If the compiler crashes, this method returns false.
*/
def shouldFailCompile(file: File, kind: String, log: File): Boolean =
withTimeout(file) {
!compiler.compile(file, kind, log)
}
}
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