__gnu_debug::safe_iterator_base(3)

NAME

__gnu_debug::Safe_iterator_base - Basic functionality for

a 'safe' iterator.

SYNOPSIS

#include <safe_base.h>
Inherited    by    __gnu_debug::Safe_iterator<   Iterator,

Sequence >

Public Member Functions

void M_attach (Safe_sequence_base *seq, bool constant) void M_detach ()
bool M_attached_to (const Safe_sequence_base *seq) const bool M_singular () const
bool M_can_compare (const Safe_iterator_base &x) const

Public Attributes

Safe_sequence_base * M_sequence unsigned int M_version
Safe_iterator_base * M_prior Safe_iterator_base * M_next

Protected Member Functions

Safe_iterator_base ()
Safe_iterator_base (const Safe_sequence_base *seq, bool

constant)
Safe_iterator_base (const Safe_iterator_base &x, bool con

stant)
~Safe_iterator_base ()

Detailed Description

Basic functionality for a 'safe' iterator.

The Safe_iterator_base base class implements the function

ality of a safe iterator that is not specific to a particular it

erator type. It contains a pointer back to the sequence it refer

ences along with iterator version information and pointers to

form a doubly-linked list of iterators referenced by the contain

er.

This class must not perform any operations that can throw

an exception, or the exception guarantees of derived iterators

will be broken.

Definition at line 50 of file safe_base.h.

Constructor & Destructor Documentation

__gnu_debug::Safe_iterator_base::Safe_iterator_base ()

[inline, protected]

Initializes the iterator and makes it singular.

Definition at line 76 of file safe_base.h.

__gnu_debug::Safe_iterator_base::Safe_iterator_base (const

Safe_sequence_base * seq, bool constant) [inline, protected]

Initialize the iterator to reference the sequence pointed

to by . constant is true when we are initializing a constant it

erator, and false if it is a mutable iterator. Note that seq may

be NULL, in which case the iterator will be singular. Otherwise,

the iterator will reference seq and be nonsingular.

Definition at line 87 of file safe_base.h.

__gnu_debug::Safe_iterator_base::Safe_iterator_base (const

Safe_iterator_base & x, bool constant) [inline, protected]

Initializes the iterator to reference the same sequence

that x does. constant is true if this is a constant iterator, and

false if it is mutable.

Definition at line 94 of file safe_base.h.

Member Function Documentation

void __gnu_debug::Safe_iterator_base::M_attach

(Safe_sequence_base * seq, bool constant)

Attaches this iterator to the given sequence, detaching it

from whatever sequence it was attached to originally. If the new

sequence is the NULL pointer, the iterator is left unattached.

Definition at line 190 of file debug.cc.

void __gnu_debug::Safe_iterator_base::M_detach ()

Detach the iterator for whatever sequence it is attached

to, if any.

Definition at line 220 of file debug.cc.

bool __gnu_debug::Safe_iterator_base::M_attached_to (const

Safe_sequence_base * seq) const [inline]

Determines if we are attached to the given sequence.

Definition at line 120 of file safe_base.h.

bool __gnu_debug::Safe_iterator_base::M_singular () const

Is this iterator singular?

Definition at line 245 of file debug.cc.

bool __gnu_debug::Safe_iterator_base::M_can_compare (const

Safe_iterator_base & x) const

Can we compare this iterator to the given iterator x? Re

turns true if both iterators are nonsingular and reference the

same sequence.

Definition at line 250 of file debug.cc.

Member Data Documentation

Safe_sequence_base*

__gnu_debug::Safe_iterator_base::M_sequence

The sequence this iterator references; may be NULL to in

dicate a singular iterator.

Definition at line 55 of file safe_base.h.

unsigned int __gnu_debug::Safe_iterator_base::M_version

The version number of this iterator. The sentinel value 0

is used to indicate an invalidated iterator (i.e., one that is

singular because of an operation on the container). This version

number must equal the version number in the sequence referenced

by M_sequence for the iterator to be non-singular.

Definition at line 64 of file safe_base.h.

Safe_iterator_base* __gnu_debug::Safe_iterator_base::M_prior

Pointer to the previous iterator in the sequence's list of

iterators. Only valid when M_sequence != NULL.

Definition at line 68 of file safe_base.h.

Safe_iterator_base* __gnu_debug::Safe_iterator_base::M_next

Pointer to the next iterator in the sequence's list of it

erators. Only valid when M_sequence != NULL.

Definition at line 72 of file safe_base.h.

Author

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libstdc++-v3 Source 1 Jan 2007__gnu_debug::Safe_it

erator_base(3)