Defines an event condition

Inheritance:

Public Methods

explicit	ConditionLogic (operation op) Constructor
explicit	ConditionLogic (bool value) Constructor
explicit	ConditionLogic (const Condition& cond, operation op = opIdentity) Constructor
explicit	ConditionLogic (const Condition& cond1, const Condition& cond2, operation op) Constructor
virtual ConditionLogic*	Copy () const Copy the event
virtual bool	Evaluate (const Argument& arg, bool& val) const Evaluate

Public Members

enum	operation Boolean operations.

Protected Methods

ConditionLogic () Default constructor

Inherited from Condition:

Public Methods

bool operator() (const Argument& arg, bool& val) const

bool operator() (const Event& event, bool& val) const

static const Condition& True()

static const Condition& False()

Protected Methods

Condition& operator= (const Condition&)

Documentation

A boolean expression for event conditions.

enum operation

Boolean operations supported by the condition.

opFalse

Always false

opTrue

Always true

opIdentity

identity condition

opNot

not condition

opAnd

and condition

opOr

or condition

opXor

xor condition

explicit ConditionLogic(operation op)

Creates an event boolean condition with zero arguments.

explicit ConditionLogic(bool value)

Creates an event boolean condition with zero arguments.

explicit ConditionLogic(const Condition& cond, operation op = opIdentity)

Creates an event boolean condition with one argument.

explicit ConditionLogic(const Condition& cond1, const Condition& cond2, operation op)

Creates an event boolean condition with two arguments.

virtual ConditionLogic* Copy() const

Returns a copy of the event condition. This method must be overriden by all descendents.

Returns:

event copy

virtual bool Evaluate(const Argument& arg, bool& val) const

Evaluate the condition.

Parameters:

- arg Event argument list
val - Condition value (return)

Returns:

True if condition could be evaluated

ConditionLogic()

Default constructor.

This class has no child classes.

Author:

Written June 2001 by Masahiro Ito and Daniel Sigg

Version:

1.0

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