com.elegantj.data.parser
Class FunctionTable

java.lang.Object
  java.util.Dictionary
      java.util.Hashtable
          com.elegantj.data.parser.FunctionTable

All Implemented Interfaces:

java.lang.Cloneable, java.util.Map, java.io.Serializable

public class FunctionTable

extends java.util.Hashtable

A FunctionTable class represents the set of function's definations.

See Also:

Serialized Form

Constructor Summary

FunctionTable()
Creates a FunctionTable with empty set of function's definations.

Method Summary

java.lang.Object	addFunction(java.lang.String funIdent_in, PostfixMathCommandI pfmc_in) Adds the function defination
boolean	containsFunction(PostfixMathCommandI pfmc_in) Returns true if this function table maps one or more identifiers to this command method.
boolean	containsFunIdent(java.lang.String funIdent_in) Tests if the specified string is an identifier in this function table.
java.util.Enumeration	functions() Returns an enumeration of the function definations in the function table
java.lang.Object	removeFunction(java.lang.String funIdent_in) Removes the function defination

Methods inherited from class java.util.Hashtable

clear, clone, contains, containsKey, containsValue, elements, entrySet, equals, get, hashCode, isEmpty, keys, keySet, put, putAll, rehash, remove, size, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FunctionTable

public FunctionTable()

Creates a FunctionTable with empty set of function's definations.

Method Detail

addFunction

public java.lang.Object addFunction(java.lang.String funIdent_in,
                                    PostfixMathCommandI pfmc_in)

Adds the function defination

Parameters:

funIdent_in - identifier of the function

pfmc_in - the command mathod to be executed

removeFunction

public java.lang.Object removeFunction(java.lang.String funIdent_in)

Removes the function defination

Parameters:

funIdent_in - identifier of the function

functions

public java.util.Enumeration functions()

Returns an enumeration of the function definations in the function table

containsFunIdent

public boolean containsFunIdent(java.lang.String funIdent_in)

Tests if the specified string is an identifier in this function table.

Parameters:

funIdent_in - the function identifier

Returns:

true if and only if the specified string is an identifier in this function table, as determined by the equals method; false otherwise

containsFunction

public boolean containsFunction(PostfixMathCommandI pfmc_in)

Returns true if this function table maps one or more identifiers to this command method.

Parameters:

pfmc_in - value command method whose presence in this function table is to be tested

Returns:

true if this map maps one or more identifiers to the specified command method