hussam.math.operations.parser
Class ExpressionReader

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

All Implemented Interfaces:

OperationReader

Direct Known Subclasses:

DynamicExpressionReader, SmartExpressionReader

public abstract class ExpressionReader
extends java.lang.Object
implements OperationReader

an Abstract class, This class is used to refference the most advanced OperationReader. Currently the getInstance() method returns a new SmartExpressionReader Most classes in operations packages use this method to get an instance of an OperationReader. You should always use This class's getInstance() to get the best ExpressionReader. This will help you to have a one point access for readers. It is always better not to use MyReader, MyExpressionReader, or SmartExpressionReader directly. Use this class Better.

The Current implementation returns an OperationReader
 that will automatically read new Variables.
 However, if it reads a new Function, it will throw
 an UnknownExpressionArgumentException.
 Before you read an operation, make sure that all functions
 used are in the OperatorSource
of the ExpressionReader.

 Use the DynamicExpressionReader if you needed to create
 Functions dynamically.

See Also:

DynamicExpressionReader

ExpressionReader

protected ExpressionReader()

getInstance

public static ExpressionReader getInstance()

Returns a new instance of an OperationReader. The returned OperationReader should have the most features.

Returns:

an OperationReader.

getInstance

public static ExpressionReader getInstance(OperationsParser parser,
OperatorSource source)

Returns a new instance of an OperationReader.

Returns:

an OperationReader.