Parma_Polyhedra_Library::Constraint_System_const_iterator Class Reference

An iterator over a system of constraints. More...

#include <Constraint_System_defs.hh>

Inheritance diagram for Parma_Polyhedra_Library::Constraint_System_const_iterator:

Collaboration diagram for Parma_Polyhedra_Library::Constraint_System_const_iterator:

Public Member Functions
	Constraint_System_const_iterator ()
	Default constructor. More...
	Constraint_System_const_iterator (const Constraint_System_const_iterator &y)
	Ordinary copy constructor. More...
	~Constraint_System_const_iterator ()
	Destructor. More...
Constraint_System_const_iterator &	operator= (const Constraint_System_const_iterator &y)
	Assignment operator. More...
const Constraint &	operator* () const
	Dereference operator. More...
const Constraint *	operator-> () const
	Indirect member selector. More...
Constraint_System_const_iterator &	operator++ ()
	Prefix increment operator. More...
Constraint_System_const_iterator	operator++ (int)
	Postfix increment operator. More...
bool	operator== (const Constraint_System_const_iterator &y) const
	Returns true if and only if *this and y are identical. More...
bool	operator!= (const Constraint_System_const_iterator &y) const
	Returns true if and only if *this and y are different. More...

Private Member Functions
	Constraint_System_const_iterator (const Linear_System< Constraint >::const_iterator &iter, const Constraint_System &cs)
	Constructor. More...
void	skip_forward ()
	*this skips to the next non-trivial constraint. More...

Private Attributes
Linear_System< Constraint >::const_iterator	i
	The const iterator over the matrix of constraints. More...
const Linear_System< Constraint > *	csp
	A const pointer to the matrix of constraints. More...

Friends
class	Constraint_System

Detailed Description

An iterator over a system of constraints.

A const_iterator is used to provide read-only access to each constraint contained in a Constraint_System object.

Example

The following code prints the system of constraints defining the polyhedron ph:

const Constraint_System& cs = ph.constraints();
for (Constraint_System::const_iterator i = cs.begin(),
        cs_end = cs.end(); i != cs_end; ++i)
  cout << *i << endl;

Definition at line 610 of file Constraint_System_defs.hh.

Constructor & Destructor Documentation

Parma_Polyhedra_Library::Constraint_System_const_iterator::Constraint_System_const_iterator ( )

inline

Default constructor.

Definition at line 118 of file Constraint_System_inlines.hh.

  : i(), csp(0) {
}

Parma_Polyhedra_Library::Constraint_System_const_iterator::Constraint_System_const_iterator ( const Constraint_System_const_iterator &  y )

inline

Ordinary copy constructor.

Definition at line 123 of file Constraint_System_inlines.hh.

  : i(y.i), csp(y.csp) {
}

Parma_Polyhedra_Library::Constraint_System_const_iterator::~Constraint_System_const_iterator ( )

inline

Destructor.

Definition at line 128 of file Constraint_System_inlines.hh.

                                                                    {
}

Parma_Polyhedra_Library::Constraint_System_const_iterator::Constraint_System_const_iterator ( const Linear_System< Constraint >::const_iterator &  iter, const Constraint_System &  cs  )

inlineprivate

Constructor.

Definition at line 174 of file Constraint_System_inlines.hh.

  : i(iter), csp(&cs.sys) {
}

Member Function Documentation

bool Parma_Polyhedra_Library::Constraint_System_const_iterator::operator!= ( const Constraint_System_const_iterator &  y ) const

inline

Returns true if and only if *this and y are different.

Definition at line 168 of file Constraint_System_inlines.hh.

References i.

                                                                                            {
  return i != y.i;
}

const Constraint & Parma_Polyhedra_Library::Constraint_System_const_iterator::operator* ( ) const

inline

Dereference operator.

Definition at line 139 of file Constraint_System_inlines.hh.

References i.

                                                  {
  return *i;
}

Constraint_System_const_iterator & Parma_Polyhedra_Library::Constraint_System_const_iterator::operator++ ( )

inline

Prefix increment operator.

Definition at line 149 of file Constraint_System_inlines.hh.

References i, and skip_forward().

Referenced by operator++().

                                             {
  ++i;
  skip_forward();
  return *this;
}

Constraint_System_const_iterator Parma_Polyhedra_Library::Constraint_System_const_iterator::operator++ ( int  )

inline

Postfix increment operator.

Definition at line 156 of file Constraint_System_inlines.hh.

References operator++().

                                                {
  const Constraint_System_const_iterator tmp = *this;
  operator++();
  return tmp;
}

const Constraint * Parma_Polyhedra_Library::Constraint_System_const_iterator::operator-> ( ) const

inline

Indirect member selector.

Definition at line 144 of file Constraint_System_inlines.hh.

References i.

                                                   {
  return i.operator->();
}

Constraint_System_const_iterator & Parma_Polyhedra_Library::Constraint_System_const_iterator::operator= ( const Constraint_System_const_iterator &  y )

inline

Assignment operator.

Definition at line 132 of file Constraint_System_inlines.hh.

References csp, and i.

                                                                                     {
  i = y.i;
  csp = y.csp;
  return *this;
}

bool Parma_Polyhedra_Library::Constraint_System_const_iterator::operator== ( const Constraint_System_const_iterator &  y ) const

inline

Returns true if and only if *this and y are identical.

Definition at line 163 of file Constraint_System_inlines.hh.

References i.

                                                                                            {
  return i == y.i;
}

void Parma_Polyhedra_Library::Constraint_System_const_iterator::skip_forward ( )

private

*this skips to the next non-trivial constraint.

Definition at line 212 of file Constraint_System.cc.

Referenced by Parma_Polyhedra_Library::Constraint_System::begin(), and operator++().

                                                  {
  const Linear_System<Constraint>::const_iterator csp_end = csp->end();
  while (i != csp_end && (*this)->is_tautological()) {
    ++i;
  }
}

Friends And Related Function Documentation

friend class Constraint_System

friend

Definition at line 655 of file Constraint_System_defs.hh.

Member Data Documentation

const Linear_System<Constraint>* Parma_Polyhedra_Library::Constraint_System_const_iterator::csp

private

A const pointer to the matrix of constraints.

Definition at line 661 of file Constraint_System_defs.hh.

Referenced by operator=().

Linear_System<Constraint>::const_iterator Parma_Polyhedra_Library::Constraint_System_const_iterator::i

private

The const iterator over the matrix of constraints.

Definition at line 658 of file Constraint_System_defs.hh.

Referenced by operator!=(), operator*(), operator++(), operator->(), operator=(), and operator==().

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

• Constraint_System_defs.hh
• Constraint_System.cc
• Constraint_System_inlines.hh