org.erights.e.elang.interp
Class Rune

java.lang.Object
  |
  +--org.erights.e.elang.interp.Rune

public class Rune

extends Object

Untamed: The main, non-interactive, E read-eval interpreter loop.

Author:

Mark S. Miller

Constructor Summary

private

Rune() prevent instantiation

Method Summary

static ConstList	doProps(ConstList args) Enabled: Processes eprops.txt and initial "-Dprop=value" arguments into the system properties.
(package private) static void	errorExit(TextWriter errs, Throwable problem)
static void	main(String[] argArray) Enabled:
(package private) static void	okExit(TextWriter errs) Called to successfully exit the process.
static void	printTime(long start, double percentile) Enabled:
static void	reportProblem(Throwable t, TextWriter errs, boolean showsJStack, boolean showsEStack) Enabled:
private static boolean	testProperty(String propName, boolean dflt)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Rune

private Rune()

prevent instantiation

Method Detail

doProps

public static ConstList doProps(ConstList args)
                         throws IOException

Enabled: Processes eprops.txt and initial "-Dprop=value" arguments into the system properties.

For use by this and other E-oriented main() methods. If there's no eprops.txt file, then sets those properties that are necessary for running the E installer script.

Normally, all "-Dprop=value" options would occur to the left of the main class name, and therefore be processed by the Java launcher before launching the main class. However, this may be difficult using some IDEs (like Cafe), so we also process such options ourselves.

Returns:

The remaining arguments after the initial "-Dprop=value" arguments have been consumed.

IOException

reportProblem

public static void reportProblem(Throwable t,
                                 TextWriter errs,
                                 boolean showsJStack,
                                 boolean showsEStack)

Enabled:

printTime

public static void printTime(long start,
                             double percentile)

Enabled:

testProperty

private static boolean testProperty(String propName,
                                    boolean dflt)

Parameters:

propName -

dflt - default answer

Returns:

okExit

static void okExit(TextWriter errs)

Called to successfully exit the process.

If e.gui-launch is true and e.onOkGuiExit is "prompt", then this prompts for a character to be typed before exiting.

Parameters:

errs -

errorExit

static void errorExit(TextWriter errs,
                      Throwable problem)

main

public static void main(String[] argArray)

Enabled: