Package slogo.expression

Class Summary

Class	Description
Addition	Represents a + b, the addition of two expressions
BinaryExpression	The base class of any binary expression, e.g., a + b, a - b, or, in future use, a < b and so on.
Division	Represents a / b, the division of two expressions
Expression	The base class of all arithmetic expressions, the evaluate method uses the hook/template method value to return a Double value, the template method returns a double.
Multiplication	Represents a x b, the multiplication of two expressions
Negation	Represents unary minus, e.g., -expression
Number	Represents a number
Subtraction	Represents a subtraction (e.g., lhs - rhs)
UnaryExpression	Represents a unary expression
Variable	A variable stores a value and can be used in an expression.
VariableFactory	Clients can use this class to obtain a unique variable per identifier (avoiding a proliferation of objects)