ix.util.lisp
Class LispInterpreter

java.lang.Object
  ix.util.lisp.Interpreter
      ix.util.lisp.LispInterpreter

Direct Known Subclasses:

IScriptInterpreter.IScriptLispInterpreter, LispComputeInterpreter, SafeLispInterpreter

public class LispInterpreter
extends Interpreter

An interpreter for a simple dialect of Lisp.

Nested Class Summary

static class	LispInterpreter.JavaNull Class used to create a single object that represents Java null.
static interface	LispInterpreter.Parser
class	LispInterpreter.Syntax
static class	LispInterpreter.SyntaxError

Nested classes/interfaces inherited from class ix.util.lisp.Interpreter

Interpreter.AbstractEnv, Interpreter.AbstractFunction, Interpreter.And, Interpreter.Assignment, Interpreter.Call, Interpreter.Closure, Interpreter.Env, Interpreter.Error, Interpreter.Expr, Interpreter.Function, Interpreter.GlobalEnv, Interpreter.If, Interpreter.JFunction, Interpreter.Lambda, Interpreter.Let, Interpreter.LexicalEnv, Interpreter.Literal, Interpreter.Or, Interpreter.Sequence, Interpreter.VarRef, Interpreter.While

Field Summary

static Symbol	COND
static Symbol	ELLIPSIS
protected java.lang.Object	JAVA_NULL
static Symbol	LAMBDA
protected java.util.Map<Symbol,LispInterpreter.Parser>	parserTable
static Symbol	PROGN
static Symbol	QUOTE
protected LispReader	reader

Fields inherited from class ix.util.lisp.Interpreter

acceptOnlySafeBuiltins, DEFAULT, FALSE, globalEnv, iscript, TRUE

Constructor Summary

LispInterpreter()

LispInterpreter(boolean beSafe)

Method Summary

void	define(Interpreter.JFunction builtin)
void	define(LispInterpreter.Syntax syntax)
void	define(java.lang.String varName, java.lang.Object val)
protected void	defineBuiltins()
protected void	defineInitialValues()
protected void	defineSyntax()
protected void	installDefinitions()
boolean	isTrue(java.lang.Object obj) Determines whether this interpreter regards the object as true; otherwise, the object is considered false.
void	loadLisp(java.util.List resourcenNames)
void	loadLisp(java.lang.String resourceName)
static void	main(java.lang.String[] argv)
Interpreter.Expr	parseForm(java.lang.Object form)
java.util.List	parseList(java.util.List forms)
void	readEvalPrintLoop()
java.lang.Object	topLevelEval(java.lang.Object form)

Methods inherited from class ix.util.lisp.Interpreter

isSafe, nameForClass, topLevelApply, topLevelEval

Methods inherited from class java.lang.Object

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

Field Detail

QUOTE

public static final Symbol QUOTE

LAMBDA

public static final Symbol LAMBDA

PROGN

public static final Symbol PROGN

COND

public static final Symbol COND

ELLIPSIS

public static final Symbol ELLIPSIS

parserTable

protected java.util.Map<Symbol,LispInterpreter.Parser> parserTable

reader

protected LispReader reader

JAVA_NULL

protected java.lang.Object JAVA_NULL

Constructor Detail

LispInterpreter

public LispInterpreter()

LispInterpreter

public LispInterpreter(boolean beSafe)

Method Detail

main

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

readEvalPrintLoop

public void readEvalPrintLoop()

loadLisp

public void loadLisp(java.util.List resourcenNames)

loadLisp

public void loadLisp(java.lang.String resourceName)

isTrue

public boolean isTrue(java.lang.Object obj)

Description copied from class: Interpreter

Determines whether this interpreter regards the object as true; otherwise, the object is considered false.

Note that expressions do not call this method directly. Instead, they must call the Interpreter.Env.isTrue(Object) method of an environment.

Overrides:

isTrue in class Interpreter

topLevelEval

public java.lang.Object topLevelEval(java.lang.Object form)

parseForm

public Interpreter.Expr parseForm(java.lang.Object form)

parseList

public java.util.List parseList(java.util.List forms)

installDefinitions

protected void installDefinitions()

define

public void define(LispInterpreter.Syntax syntax)

define

public void define(Interpreter.JFunction builtin)

define

public void define(java.lang.String varName,
                   java.lang.Object val)

defineSyntax

protected void defineSyntax()

defineBuiltins

protected void defineBuiltins()

defineInitialValues

protected void defineInitialValues()