TermImpl is the superclass for all implementations of terms in the expression tree, such as LiteralImpl, Operation and ConditionRoot. More...

#include <ArmarXCore/observers/condition/TermImpl.h>

Inheritance diagram for TermImpl:

Public Member Functions
void	addChild (const TermImplBasePtr &child, const Ice::Current &c=Ice::emptyCurrent) override
	Add child to term.

TermImplSequence	getChilds (const Ice::Current &c=Ice::emptyCurrent) override
	retrieve childs of this term in the expression tree.

StringVariantBaseMap	getDatafields (const Ice::Current &) const override

TermImplBasePtr	getParent (const Ice::Current &c=Ice::emptyCurrent) override
	retrieve parent of this term in the expression tree.

TermType	getType (const Ice::Current &c=Ice::emptyCurrent) const override
	Retrieve type of term.

bool	getValue (const Ice::Current &c=Ice::emptyCurrent) const override
	retrieve current value of term.

virtual void	output (std::ostream &out) const =0
	output to stream.

void	removeChildren ()

void	update (const Ice::Current &c=Ice::emptyCurrent) override
	Updates the parent in the expression tree.

void	updateWithData (const Ice::Current &c=Ice::emptyCurrent) override

	~TermImpl () override
	Destructor of TermImpl.

Protected Member Functions
void	__decRef () override
	Overwritten version of reference counting from GCShared.

void	__incRef () override
	Overwritten version of reference counting from GCShared.

void	resetParent (const Ice::Current &c=Ice::emptyCurrent) override
	Reset the parent of this term.

void	setParent (const TermImplBasePtr &parent, const Ice::Current &c=Ice::emptyCurrent) override
	Sets the parent for this term in the expression tree.

Static Protected Member Functions
static int	atomicDecAndTestValue (volatile int *counter, int value)
	atomicDecAndTestValue - decrement and test @v: pointer of type AtomicCounter @value: value to test for

Friends
std::ostream &	operator<< (std::ostream &stream, const TermImpl *rhs)
	Streaming operator for this class.

std::ostream &	operator<< (std::ostream &stream, const TermImplPtr &rhs)
	Streaming operator for this class.

Detailed Description

TermImpl is the superclass for all implementations of terms in the expression tree, such as LiteralImpl, Operation and ConditionRoot.

The TermImpl is the backend to the API frontend Term. It inherits from Ice::Object in order to allow serialization via Ice and provides all methods to build an expression tree.

Each term has a boolean value. Values are updated from the childs in the expression tree by calling update(). Further, the update method calls the parents state update(). Thus, expression trees consisting of TermImpl are updated from bottom to top.

Constructor & Destructor Documentation

◆ ~TermImpl()

~TermImpl ( )

override

Destructor of TermImpl.

Assures handling of cyclic IceInternal::Handle dependencies

Member Function Documentation

◆ __decRef()

void __decRef ( )

overrideprotected

Overwritten version of reference counting from GCShared.

Resolves cyclic dependencies in the tree without makin use of the garbage collector.

See also: Shared::__decRef(); GCShared::__decRef()

◆ __incRef()

void __incRef ( )

overrideprotected

Overwritten version of reference counting from GCShared.

Reference counter increment without garbage collection. Uses Shared::__incRef instead of GCShared::__incRef()

See also: Shared::__incRef(); GCShared::__incRef()

◆ addChild()

void addChild	(	const TermImplBasePtr &	child,
		const Ice::Current &	c = Ice::emptyCurrent )

override

Add child to term.

This is used to generate an expression tree.

Parameters

child shared pointer to child

◆ atomicDecAndTestValue()

int atomicDecAndTestValue	(	volatile int *	counter,
		int	value )

inlinestaticprotected

atomicDecAndTestValue - decrement and test @v: pointer of type AtomicCounter @value: value to test for

Atomically decrements @v by 1 and returns true if the result is value, or false for all other cases. Note that the guaranteed useful range of an AtomicCounter is only 24 bits.

Inlined because this operation is performance critical.

◆ getChilds()

TermImplSequence getChilds ( const Ice::Current & c = Ice::emptyCurrent )

override

retrieve childs of this term in the expression tree.

Returns: list of child terms

◆ getDatafields()

StringVariantBaseMap getDatafields ( const Ice::Current & ) const

override

◆ getParent()

TermImplBasePtr getParent ( const Ice::Current & c = Ice::emptyCurrent )

override

retrieve parent of this term in the expression tree.

For the root node this is NULL.

Returns: shared pointer to parent

◆ getType()

TermType getType ( const Ice::Current & c = Ice::emptyCurrent ) const

override

Retrieve type of term.

Returns: type of the term

◆ getValue()

bool getValue ( const Ice::Current & c = Ice::emptyCurrent ) const

override

retrieve current value of term.

Does not evaluate the child nodes.

Returns: current value of the term

◆ output()

virtual void output ( std::ostream & out ) const

pure virtual

output to stream.

pure virtual.

Parameters

stream

Implemented in ConditionRoot, LiteralImpl, OperationAnd, OperationNot, and OperationOr.

◆ removeChildren()

void removeChildren ( )

◆ resetParent()

void resetParent ( const Ice::Current & c = Ice::emptyCurrent )

overrideprotected

Reset the parent of this term.

◆ setParent()

void setParent	(	const TermImplBasePtr &	parent,
		const Ice::Current &	c = Ice::emptyCurrent )

overrideprotected

Sets the parent for this term in the expression tree.

Parameters

shared pointer to parent

◆ update()

void update ( const Ice::Current & c = Ice::emptyCurrent )

override

Updates the parent in the expression tree.

call update after each change to this->value.

◆ updateWithData()

void updateWithData ( const Ice::Current & c = Ice::emptyCurrent )

override

Friends And Related Symbol Documentation

◆ operator<< [1/2]

std::ostream & operator<<	(	std::ostream &	stream,
		const TermImpl *	rhs )

friend

Streaming operator for this class.

Parameters

stream	stream to output
rhs	right handside

◆ operator<< [2/2]

std::ostream & operator<<	(	std::ostream &	stream,
		const TermImplPtr &	rhs )

friend

Streaming operator for this class.

Parameters

stream	stream to output
rhs	right handside

The documentation for this class was generated from the following files:

ArmarXCore/observers/condition/TermImpl.h
ArmarXCore/observers/condition/TermImpl.cpp

Public Member Functions

Protected Member Functions

Static Protected Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ ~TermImpl()

Member Function Documentation

◆ __decRef()

◆ __incRef()

◆ addChild()

◆ atomicDecAndTestValue()

◆ getChilds()

◆ getDatafields()

◆ getParent()

◆ getType()

◆ getValue()

◆ output()

◆ removeChildren()

◆ resetParent()

◆ setParent()

◆ update()

◆ updateWithData()

Friends And Related Symbol Documentation

◆ operator<< [1/2]

◆ operator<< [2/2]