g2d.jlambda

Class ReadEvalPrintLoop

java.lang.Object

g2d.jlambda.ReadEvalPrintLoop

public final class ReadEvalPrintLoop
extends java.lang.Object

The read, eval, then print loop.

Since:

July 10th, 2004

Author:

Ian A. Mason.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DFNS
static java.lang.String	EMPTY
static boolean	FULL_DFNS
static java.lang.String	HELP
static char	OPENP
static java.lang.String	PROMPT
static java.lang.String	Q
static java.lang.String	QUIT
static java.lang.String	SHOW
static java.lang.String	TOGGLE
static java.lang.String	UIDS

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args) This is the main entry point to the JLambda interpreter, the usual Lisp or Scheme style read, eval, then print loop.
static java.lang.String	snarf(java.io.BufferedInputStream bios, int millisecs)

Methods inherited from class java.lang.Object

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

Field Detail

FULL_DFNS

public static boolean FULL_DFNS

PROMPT

public static final java.lang.String PROMPT

See Also:

Constant Field Values

EMPTY

public static final java.lang.String EMPTY

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Constant Field Values

Q

public static final java.lang.String Q

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Constant Field Values

HELP

public static final java.lang.String HELP

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Constant Field Values

DFNS

public static final java.lang.String DFNS

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Constant Field Values

UIDS

public static final java.lang.String UIDS

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Constant Field Values

SHOW

public static final java.lang.String SHOW

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Constant Field Values

TOGGLE

public static final java.lang.String TOGGLE

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Constant Field Values

QUIT

public static final java.lang.String QUIT

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Constant Field Values

OPENP

public static final char OPENP

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Constant Field Values

Method Detail

snarf

public static java.lang.String snarf(java.io.BufferedInputStream bios,
                                     int millisecs)

main

public static void main(java.lang.String[] args)

This is the main entry point to the JLambda interpreter, the usual Lisp or Scheme style read, eval, then print loop. You can type any valid jlambda expression to be evaluated, or:

    q to quit  (or quit)
    ? to see these instructions
    d to see the current definitions
    s  <name> to see the raw definition of  <name>
    u to see the current uids
    v to see the toggle the degree of verbosity in error reports
 

Parameters:

args - is the command line arguments, an array of Strings, currently only an optional filename is allowed. This should contain a single JLambda form to be evaluated, prior to entering the read, eval, print loop.