jmathlib.core.interpreter
Class VariableList

java.lang.Object
  jmathlib.core.interpreter.VariableList

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class VariableList
extends java.lang.Object
implements java.lang.Cloneable, java.io.Serializable

Class used to store all the declared variables within a context

See Also:

Serialized Form

Constructor Summary

VariableList()
Sets up the ArrayList of variables

VariableList(VariableList _variables)
Create a duplicate of a VariableList

Method Summary

void	clear() remove all variables from the list
java.lang.Object	clone() Create a duplicate of this Variable List
Variable	createVariable(java.lang.String name) creates a variable, if it doesn't already exist.
java.util.Iterator	getIterator()
int	getSize()
Variable	getVariable(java.lang.String name)
boolean	isVariable(java.lang.String name) Check wether or not a variable with the given name exists.
void	listVariables() Lists all the currently declared variables to the console and a log file
void	loadVariables(java.lang.String fileName) loads the list of variables
void	remove(java.lang.String name) Remove a variable from the list
void	saveVariables(java.lang.String fileName) saves the list of variables
void	setVariable(java.lang.String name, OperandToken value)

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableList

public VariableList()

Sets up the ArrayList of variables

VariableList

public VariableList(VariableList _variables)

Create a duplicate of a VariableList

Parameters:

parent - = the previous variable context

Method Detail

getIterator

public java.util.Iterator getIterator()

Returns:

an iterator for the key/value pairs of the list

getSize

public int getSize()

Returns:

the number of variables

remove

public void remove(java.lang.String name)

Remove a variable from the list

Parameters:

variable-string - = the variable to remove

clear

public void clear()

remove all variables from the list

setVariable

public void setVariable(java.lang.String name,
                        OperandToken value)

Parameters:

name - = the name of the variable

value - = the value to set it to

getVariable

public Variable getVariable(java.lang.String name)

Parameters:

name - = the name of the variable

Returns:

the variable represented with the name name

isVariable

public boolean isVariable(java.lang.String name)

Check wether or not a variable with the given name exists.

Parameters:

name - = the name of a variable

listVariables

public void listVariables()

Lists all the currently declared variables to the console and a log file

createVariable

public Variable createVariable(java.lang.String name)

creates a variable, if it doesn't already exist. it returns the created variable

Parameters:

name - = the name of the variable to create

Returns:

the variable with that name

saveVariables

public void saveVariables(java.lang.String fileName)

saves the list of variables

Parameters:

fileName - = the name of the file to save to

loadVariables

public void loadVariables(java.lang.String fileName)

loads the list of variables

Parameters:

fileName - = the name of the file to load from

clone

public java.lang.Object clone()

Create a duplicate of this Variable List

Overrides:

clone in class java.lang.Object