hussam.math.operations.parser (Hussam Math Parser Version 3 Beta)

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Package hussam.math.operations.parser

Provides a User interface to read Expressions to be transformed into Operations.

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Description

Interface Summary
OperationReader	A machine that reads expressions and converts them to Operations.
OperationsParser	This is used by an `OperationReader` to read expressions.

Class Summary
ExpressionReader	an Abstract class, This class is used to refference the most advanced OperationReader.
HussamExpressionReader	This class is Version 6 of all previously created readers.
MyParser	The default implementation for the `OperationsParser` interface.
SmartExpressionReader	This class is not in use by the package since there is a new Class called `HussamExpressionReader` which should be used instead.

Package hussam.math.operations.parser Description

Provides a User interface to read Expressions to be transformed into Operations. This package contains the tools a developer needs that will help him read expressions easily. The user can start reading expressions easily by having an ExpressionReader. An ExpressionReader can be obtained by:

OperationReader reader = ExpressionReader.getInstance();

The reader can be used to parse mathimatical expressions:

Operation o = reader.readOperation("5+7*3+Abs (Min (x , -19))");

After having an Operation, the user can have the result:

double value = o.result();
System.out.println(value);

Note that you can access the OperatorSource used while reading to obtain all variables used in the expression:

OperatorSource source = reader.getOperatorSource();
Variable v = source.getLocalVariable("x");
v.setOperation (new ConstantNumber (10));
double value2 = o.result();
System.out.println(value2);

The expressions are parsed using the OperationsParser with the specified default implementation MyParser. The developer can change the way the reader parses by changing the parser.

ExpressionReader.getInstance(hussam.math.operations.parser.OperationsParser, hussam.math.operations.dataBase.OperatorSource)

Package Specification

This package is linked direclty to the mother package operations. This package also uses the dataBase package to access OperatorSource.

Hussam Almulhim Web Site.

Package hussam.math.operations.parser

Package hussam.math.operations.parser Description

Package Specification

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