pass all jEdit jars to compiler as classpath -- to enable proper referencing of application name space;
reduced predefined values, which take time and are static anyway;
/*
* Scala instance of Console plugin
*
* @author Makarius
*/
package isabelle.jedit
import console.{Console, ConsolePane, Shell, Output}
import org.gjt.sp.jedit.{jEdit, JARClassLoader}
import org.gjt.sp.jedit.MiscUtilities
import java.io.{File, Writer, PrintWriter}
import scala.tools.nsc.{Interpreter, GenericRunnerSettings, NewLinePrintWriter, ConsoleWriter}
import scala.collection.mutable
class Scala_Console extends Shell("Scala")
{
private var interpreters = Map[Console, Interpreter]()
private var global_console: Console = null
private var global_out: Output = null
private var global_err: Output = null
private def with_console[A](console: Console, out: Output, err: Output)(e: => A): A =
{
global_console = console
global_out = out
global_err = if (err == null) out else err
val res = Exn.capture { e }
global_console = null
global_out = null
global_err = null
Exn.release(res)
}
private def report_error(str: String)
{
if (global_console == null || global_err == null) System.err.println(str)
else global_err.print(global_console.getErrorColor, str)
}
private def construct_classpath(): String =
{
def find_jars(start: String): List[String] =
if (start != null)
Standard_System.find_files(new File(start),
entry => entry.isFile && entry.getName.endsWith(".jar")).map(_.getAbsolutePath)
else Nil
val path =
(jEdit.getJEditHome + File.separator + "jedit.jar") ::
(find_jars(jEdit.getSettingsDirectory) ::: find_jars(jEdit.getJEditHome))
path.mkString(File.pathSeparator)
}
private class Console_Writer extends Writer
{
def close {}
def flush {}
def write(cbuf: Array[Char], off: Int, len: Int)
{
if (len > 0) write(new String(cbuf.subArray(off, off + len)))
}
override def write(str: String)
{
if (global_out == null) System.out.println(str)
else global_out.print(null, str)
}
}
override def openConsole(console: Console)
{
val settings = new GenericRunnerSettings(report_error)
settings.classpath.value = construct_classpath()
val printer = new PrintWriter(new Console_Writer, true)
val interp = new Interpreter(settings, printer)
{
override def parentClassLoader = new JARClassLoader
}
interp.setContextClassLoader
interp.bind("view", "org.gjt.sp.jedit.View", console.getView)
interpreters += (console -> interp)
}
override def closeConsole(console: Console)
{
interpreters -= console
}
override def printPrompt(console: Console, out: Output)
{
out.writeAttrs(ConsolePane.colorAttributes(console.getInfoColor), "scala>")
out.writeAttrs(ConsolePane.colorAttributes(console.getPlainColor), " ")
}
override def execute(console: Console, input: String, out: Output, err: Output, command: String)
{
val interp = interpreters(console)
with_console(console, out, err) { interp.interpret(command) }
if (err != null) err.commandDone()
out.commandDone()
}
}