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/* NSC -- new Scala compiler
* Copyright 2005-2013 LAMP/EPFL
* @author Paul Phillips
*/
package scala.tools.partest
import scala.tools.nsc._
import io.Directory
import util.{BatchSourceFile, CommandLineParser}
import reporters.{Reporter, ConsoleReporter}
/** A class for testing code which is embedded as a string.
* It allows for more complete control over settings, compiler
* configuration, sequence of events, etc. than does partest.
*/
abstract class DirectTest extends App {
// The program being tested in some fashion
def code: String
// produce the output to be compared against a checkfile
def show(): Unit
// the test file or dir, and output directory
def testPath = io.File(sys.props("partest.test-path"))
def testOutput = io.Directory(sys.props("partest.output"))
// override to add additional settings with strings
def extraSettings: String = ""
// a default Settings object
def settings: Settings = newSettings(CommandLineParser tokenize extraSettings)
// a custom Settings object
def newSettings(args: List[String]) = {
val s = new Settings
val allArgs = args ++ (CommandLineParser tokenize debugSettings)
log("newSettings: allArgs = " + allArgs)
s processArguments (allArgs, true)
s
}
// new compiler
def newCompiler(args: String*): Global = {
val settings = newSettings((CommandLineParser tokenize ("-d \"" + testOutput.path + "\" " + extraSettings)) ++ args.toList)
if (settings.Yrangepos.value) new Global(settings, reporter(settings)) with interactive.RangePositions
else new Global(settings, reporter(settings))
}
def reporter(settings: Settings): Reporter = new ConsoleReporter(settings)
def newSources(sourceCodes: String*) = sourceCodes.toList.zipWithIndex map {
case (src, idx) => new BatchSourceFile("newSource" + (idx + 1), src)
}
def compileString(global: Global)(sourceCode: String): Boolean = {
withRun(global)(_ compileSources newSources(sourceCode))
!global.reporter.hasErrors
}
def compilationUnits(global: Global)(sourceCodes: String*): List[global.CompilationUnit] = {
val units = withRun(global) { run =>
run compileSources newSources(sourceCodes: _*)
run.units.toList
}
if (global.reporter.hasErrors) {
global.reporter.flush()
sys.error("Compilation failure.")
}
units
}
def withRun[T](global: Global)(f: global.Run => T): T = {
global.reporter.reset()
f(new global.Run)
}
// compile the code, optionally first adding to the settings
def compile(args: String*) = compileString(newCompiler(args: _*))(code)
/** Constructor/main body **/
try show()
catch { case t: Exception => println(t.getMessage) ; t.printStackTrace ; sys.exit(1) }
/** Debugger interest only below this line **/
protected def isDebug = (sys.props contains "partest.debug") || (sys.env contains "PARTEST_DEBUG")
protected def debugSettings = sys.props.getOrElse("partest.debug.settings", "")
final def log(msg: => Any) {
if (isDebug) Console.err println msg
}
}
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