net.sourceforge.sasi
Class SASIInterpreter

java.lang.Object
  net.sourceforge.sasi.SASIInterpreter

public class SASIInterpreter

extends java.lang.Object

This class provides methods for parsing and evaluting aicc_script expressions used in SCORM 1.2

 HashMap hm = new HashMap();
 hm.put("s1", "passed");
 hm.put("s2", "failed");
 
 **OO style**
 SASIInterpreter sasi = new SASIInterpreter("s1&s2"); 
 sasi.create();
 sasi.interpret(hm);
 
 ***static style***
 SASIEval se = SASIInterpreter.create("s1&s2");
 SASIInterpreter.interpret(se, hm);
 

Version:

$Id$

Author:

Alexander Merz

Constructor Summary

SASIInterpreter(java.lang.String expr)
Constructor

Method Summary

void	create() parses the expression
static SASIEval	create(java.lang.String expr) parses an expression
boolean	interpret(java.util.HashMap hm) evalutes an expression using the provided sco states
static boolean	interpret(SASIEval expr, java.util.HashMap hm) evalutes an expression using the provided sco states

Methods inherited from class java.lang.Object

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

Constructor Detail

SASIInterpreter

public SASIInterpreter(java.lang.String expr)

Constructor

Parameters:

expr - the expression to interprete

Method Detail

create

public static SASIEval create(java.lang.String expr)
                       throws java.lang.Exception

parses an expression

Parameters:

expr - the expression to parse

Returns:

the expression tree

Throws:

java.lang.Exception

create

public void create()
            throws java.lang.Exception

parses the expression

Throws:

java.lang.Exception

interpret

public static boolean interpret(SASIEval expr,
                                java.util.HashMap hm)

evalutes an expression using the provided sco states

Parameters:

expr - the expression tree

hm - the HashMap containing the sco states

Returns:

true or false depending on the sco states

interpret

public boolean interpret(java.util.HashMap hm)

evalutes an expression using the provided sco states

Parameters:

hm - the HashMap containing the sco states

Returns:

true or false depending on the sco states