hussam.math.operations.parser
Class MyParser

java.lang.Object
hussam.math.operations.parser.MyParser

All Implemented Interfaces:

OperationsParser

public class MyParser
extends java.lang.Object
implements OperationsParser

The default implementation for the OperationsParser interface.

Things to note down:
 1- Groups of expressions can be done using these charecter sets:
        { '(' , ')' , '[' , ']' , '{' , '}' }
 2- you can partition the arguments using these character sets:
        { ',' , '¡'}
 3- Logical Operations are: { '<' , '>' , '==' , '<=' , '>=' }
 4- Extended Logical Operations : { '!' , '&' , '|' }
 5- Assingment key: { '=' }

Since:

Version 3

MyParser

public MyParser()

isNumber

public boolean isNumber(char c)

Description copied from interface: OperationsParser

returns true if this char is a Number.

Specified by:

isNumber in interface OperationsParser

Parameters:

c - The charectar

Returns:

True if the char is a number.

isOperand

public boolean isOperand(char c)

This implemetation will test if the charected is set in the operands list in the OperatorFactoryDB plus it will test for group charecters.

Specified by:

isOperand in interface OperationsParser

Parameters:

c - The charectar

Returns:

True if the char is an Operand.

isVariable

public boolean isVariable(char c)

Description copied from interface: OperationsParser

Returns true if this Char is a Variable.

Specified by:

isVariable in interface OperationsParser

Parameters:

c - The charectar

Returns:

True if the char is a Variable name.

isOperand

public boolean isOperand(java.lang.String word)

Description copied from interface: OperationsParser

Tests for operand String.

Specified by:

isOperand in interface OperationsParser

Parameters:

word - name.

Returns:

True if the String is an Operand.

isNumber

public boolean isNumber(java.lang.String word)

Description copied from interface: OperationsParser

Tests for number String.

Specified by:

isNumber in interface OperationsParser

Parameters:

word - name.

Returns:

True if the String is a Number.

isVariable

public boolean isVariable(java.lang.String word)

Description copied from interface: OperationsParser

Tests for Variable name.

Specified by:

isVariable in interface OperationsParser

Parameters:

word - name.

Returns:

True if the String is Variable Name.

isFunction

public boolean isFunction(java.lang.String word)

Description copied from interface: OperationsParser

Tests for Function name

Specified by:

isFunction in interface OperationsParser

Parameters:

word - name.

Returns:

True if the String is a Function name.

isOpenParenthesis

public boolean isOpenParenthesis(java.lang.String word)

Description copied from interface: OperationsParser

Returns true if this String is an open Parenthesis. such as (, [, { or even Start, Begin etc.

Specified by:

isOpenParenthesis in interface OperationsParser

Parameters:

word - the word to be evaluated.

Returns:

true if this indicated an open parenthesis.

See Also:

OperationsParser.isParenthesis(String, String)

isCloseParenthesis

public boolean isCloseParenthesis(java.lang.String word)

Description copied from interface: OperationsParser

Returns true if this word indicates a close parenthesis such as ), ], } or even END.

Specified by:

isCloseParenthesis in interface OperationsParser

Parameters:

word - The word to be evaluated.

Returns:

true if it is an openParenthesis.

See Also:

OperationsParser.isParenthesis(String, String)

isOpenParenthesis

public boolean isOpenParenthesis(char c)

Description copied from interface: OperationsParser

Returns true if this char is an open Parenthesis. such as (, [, { etc.

Specified by:

isOpenParenthesis in interface OperationsParser

Parameters:

c - the char to be evaluated.

Returns:

true if this indicates an open parenthesis char.

See Also:

OperationsParser.isParenthesis(char, char)

isCloseParenthesis

public boolean isCloseParenthesis(char c)

Description copied from interface: OperationsParser

Returns true if this char indicated a close parenthesis such as ), ], } .

Specified by:

isCloseParenthesis in interface OperationsParser

Parameters:

c - the char to be evaluated.

Returns:

true if this indicated a close parenthesis.

See Also:

OperationsParser.isParenthesis(char, char)

isParenthesis

public boolean isParenthesis(java.lang.String word,
                             java.lang.String word1)

Description copied from interface: OperationsParser

Returns true if these two words indicate a block of code, like Start/End, Begin/Finish. or even []/{}/<>!!

Specified by:

isParenthesis in interface OperationsParser

Parameters:

word - The open parenthesis.

word1 - the close parenthesis.

Returns:

true if these two words are an open and a close parenthesis.

isParenthesis

public boolean isParenthesis(char c,
                             char c1)

Description copied from interface: OperationsParser

Returns true of these two chars indicate a pair of parenthesis such as () , [], {}, <> or any other char!

Specified by:

isParenthesis in interface OperationsParser

Parameters:

c - The open parenthesis

c1 - the close parenthesis.

Returns:

true if the two chars indicate a parenthsis pair.

isComma

public boolean isComma(java.lang.String word)

Description copied from interface: OperationsParser

returns true if this word act as a partition in a group, for example you can have the word AND as a partition for this group.

{1 AND 5 AND 7}

Specified by:

isComma in interface OperationsParser

Parameters:

word - The word to be evaluated.

Returns:

true id the word acts like a comma.

isComma

public boolean isComma(char c)

Description copied from interface: OperationsParser

Returns true if the char acts like a partioner in a group. For Exmaple: the comma is a partitioner in this group.

{ 1,3,5,6,7}

Specified by:

isComma in interface OperationsParser

Parameters:

c - the char to be evaluated.

Returns:

true if this is a comma.