hussam.math.operations.parser
Class SmartExpressionReader

java.lang.Object
hussam.math.operations.parser.ExpressionReader
hussam.math.operations.parser.SmartExpressionReader

All Implemented Interfaces:

OperationReader

public class SmartExpressionReader
extends ExpressionReader

This class is Version 5 of all previously created readers. I need people to test this class with different expressions.

Author:

Hussam Al-Mulhim حسام الملحم

See Also:

Operation

SmartExpressionReader

public SmartExpressionReader()

Creates a new ExpressionReader.

SmartExpressionReader

public SmartExpressionReader(OperationsParser parser)

Creates a new ExpressionReader given this spicific parser.

Parameters:

parser - the parser used to parse expressions.

SmartExpressionReader

public SmartExpressionReader(OperatorSource source)

Creates a new ExpressionReader given this spicific operator source.

Parameters:

source - the source used to evaluate expressions.

SmartExpressionReader

public SmartExpressionReader(OperationsParser parser,
OperatorSource source)

creates a new Expression Reader using a this OperatorSource.

Parameters:

parser - The parser used, can be null.

source - The source used to find resources. can be null.

getOperatorSource

public OperatorSource getOperatorSource()

Description copied from interface: OperationReader

gets the OperatorSource for all expressions read!

Returns:

the OperatorSource for all expressions read.

getExpressionOperations

public java.util.List<Operation> getExpressionOperations()

This will return a list of all read operations. For example: if you read 3+5, you will get a list containing:

[ConstantNumber, Operand, ConstantNumber]

you will notice that (,) commas are treated as null;

Returns:

a list of operations.

getExpressionPartitioned

public java.util.List<java.lang.String> getExpressionPartitioned()

This will return a list of all symbols, numbers, words(variables or function names) and Baraks. This list is collected from all expressions read.

Returns:

a list of String

readOperation

public Operation readOperation(java.lang.String operationString)
                        throws MathException

Description copied from interface: OperationReader

Reads an expression

Parameters:

operationString - the expression to be evaluated.

Returns:

the Operation from which you can call result() to get the result of the expression.

Throws:

MathException - Thrown if the expression has a problemSyntaxErrorException MathLogicException

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

A test method.

Throws:

java.lang.Exception