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package dotty.tools
package dotc
package reporting
import scala.collection.mutable
import util.SourcePosition
import core.Contexts._
import Reporter._
import java.io.{ BufferedReader, IOException, PrintWriter }
import scala.reflect.internal.util._
import diagnostic.Message
/**
* This class implements a Reporter that displays messages on a text
* console.
*/
class ConsoleReporter(
reader: BufferedReader = Console.in,
writer: PrintWriter = new PrintWriter(Console.err, true))
extends Reporter with UniqueMessagePositions with HideNonSensicalMessages {
/** maximal number of error messages to be printed */
protected def ErrorLimit = 100
def printSourceLine(pos: SourcePosition) =
printMessage(pos.lineContent.stripLineEnd)
def printColumnMarker(pos: SourcePosition) =
if (pos.exists) { printMessage(" " * pos.column + "^") }
/** Prints the message. */
def printMessage(msg: String): Unit = { writer.print(msg + "\n"); writer.flush() }
/** Prints the message with the given position indication. */
def printMessageAndPos(msg: String, pos: SourcePosition, kind: String = "")(implicit ctx: Context): Unit = {
val posStr = if (pos.exists) s"$pos: " else ""
printMessage(posStr + kind + msg)
if (pos.exists) {
printSourceLine(pos)
printColumnMarker(pos)
}
}
override def doReport(m: Message)(implicit ctx: Context): Unit = m match {
case m: Error =>
printMessageAndPos(m.message, m.pos, m.kind)
if (ctx.settings.prompt.value) displayPrompt()
case m: ConditionalWarning if !m.enablingOption.value =>
case m: MigrationWarning =>
printMessageAndPos(m.message, m.pos, m.kind)
case m: Warning =>
printMessageAndPos(m.message, m.pos, m.kind)
case _ =>
printMessageAndPos(m.message, m.pos, m.kind)
}
def displayPrompt(): Unit = {
writer.print("\na)bort, s)tack, r)esume: ")
writer.flush()
if (reader != null) {
val response = reader.read().asInstanceOf[Char].toLower
if (response == 'a' || response == 's') {
Thread.dumpStack()
if (response == 'a')
sys.exit(1)
}
writer.print("\n")
writer.flush()
}
}
override def flush()(implicit ctx: Context): Unit = { writer.flush() }
}
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