<html><!-- Created using the cpp_pretty_printer from the dlib C++ library. See http://dlib.net for updates. --><head><title>dlib C++ Library - sequence_kernel_2.h</title></head><body bgcolor='white'><pre>
<font color='#009900'>// Copyright (C) 2003 Davis E. King (davis@dlib.net)
</font><font color='#009900'>// License: Boost Software License See LICENSE.txt for the full license.
</font><font color='#0000FF'>#ifndef</font> DLIB_SEQUENCE_KERNEl_2_
<font color='#0000FF'>#define</font> DLIB_SEQUENCE_KERNEl_2_
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='sequence_kernel_abstract.h.html'>sequence_kernel_abstract.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../algs.h.html'>../algs.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../interfaces/enumerable.h.html'>../interfaces/enumerable.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../interfaces/remover.h.html'>../interfaces/remover.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../serialize.h.html'>../serialize.h</a>"
<font color='#0000FF'>namespace</font> dlib
<b>{</b>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager <font color='#5555FF'>=</font> default_memory_manager
<font color='#5555FF'>></font>
<font color='#0000FF'>class</font> <b><a name='sequence_kernel_2'></a>sequence_kernel_2</b> : <font color='#0000FF'>public</font> enumerable<font color='#5555FF'><</font>T<font color='#5555FF'>></font>,
<font color='#0000FF'>public</font> remover<font color='#5555FF'><</font>T<font color='#5555FF'>></font>
<b>{</b>
<font color='#009900'>/*!
INITIAL VALUE
sequence_size == 0
at_start_ == true
current_enumeration_node == 0
CONVENTION
sequence_size == the number of elements in the sequence
at_start_ == at_start()
(current_enumeration_node!=0) == current_element_valid()
if (current_enumeration_node!=0) then
current_enumeration_node->item == element()
current_enumeration_pos == the position of the node pointed to by
current_enumeration_node
if ( sequence_size > 0 )
{
current_node == pointer to a node in the linked list and
current_node->right->right->... eventually == current_node and
current_node->left->left->... eventually == current_node and
current_pos == the position in the sequence of
current_node->item
}
!*/</font>
<font color='#0000FF'>struct</font> <b><a name='node'></a>node</b> <b>{</b>
T item;
node<font color='#5555FF'>*</font> right;
node<font color='#5555FF'>*</font> left;
<b>}</b>;
<font color='#0000FF'>public</font>:
<font color='#0000FF'>typedef</font> T type;
<font color='#0000FF'>typedef</font> mem_manager mem_manager_type;
<b><a name='sequence_kernel_2'></a>sequence_kernel_2</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> :
sequence_size<font face='Lucida Console'>(</font><font color='#979000'>0</font><font face='Lucida Console'>)</font>,
at_start_<font face='Lucida Console'>(</font><font color='#979000'>true</font><font face='Lucida Console'>)</font>,
current_enumeration_node<font face='Lucida Console'>(</font><font color='#979000'>0</font><font face='Lucida Console'>)</font>
<b>{</b><b>}</b>
<font color='#0000FF'>virtual</font> ~<b><a name='sequence_kernel_2'></a>sequence_kernel_2</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>;
<font color='#0000FF'>inline</font> <font color='#0000FF'><u>void</u></font> <b><a name='clear'></a>clear</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>void</u></font> <b><a name='add'></a>add</b> <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos,
T<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>void</u></font> <b><a name='remove'></a>remove</b> <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos,
T<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>void</u></font> <b><a name='cat'></a>cat</b> <font face='Lucida Console'>(</font>
sequence_kernel_2<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b>[] <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
T<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b>[] <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos
<font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
sequence_kernel_2<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#009900'>// functions from the remover interface
</font> <font color='#0000FF'>inline</font> <font color='#0000FF'><u>void</u></font> <b><a name='remove_any'></a>remove_any</b> <font face='Lucida Console'>(</font>
T<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#009900'>// functions from the enumerable interface
</font> <font color='#0000FF'>inline</font> <font color='#0000FF'><u>size_t</u></font> <b><a name='size'></a>size</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'><u>bool</u></font> <b><a name='at_start'></a>at_start</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'>inline</font> <font color='#0000FF'><u>void</u></font> <b><a name='reset'></a>reset</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'><u>bool</u></font> <b><a name='current_element_valid'></a>current_element_valid</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> <b><a name='element'></a>element</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
T<font color='#5555FF'>&</font> <b><a name='element'></a>element</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>bool</u></font> <b><a name='move_next'></a>move_next</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#0000FF'>private</font>:
<font color='#0000FF'><u>void</u></font> <b><a name='delete_nodes'></a>delete_nodes</b> <font face='Lucida Console'>(</font>
node<font color='#5555FF'>*</font> current_node,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> sequence_size
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
requires
CONVENTION IS CORRECT
ensures
all memory associated with the ring of nodes has been freed
!*/</font>
<font color='#0000FF'><u>void</u></font> <b><a name='move_to_pos'></a>move_to_pos</b> <font face='Lucida Console'>(</font>
node<font color='#5555FF'>*</font><font color='#5555FF'>&</font> current_node,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font><font color='#5555FF'>&</font> current_pos,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> size
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#009900'>/*!
requires
everything in the CONVENTION is correct and
there is a node corresponding to pos in the CONVENTION and
0 <= pos < size
ensures
current_pos == pos and
current_node->item is the item in the sequence associated with
position pos
!*/</font>
<font color='#009900'>// data members
</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> sequence_size;
<font color='#0000FF'>mutable</font> node<font color='#5555FF'>*</font> current_node;
<font color='#0000FF'>mutable</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> current_pos;
<font color='#0000FF'>mutable</font> <font color='#0000FF'><u>bool</u></font> at_start_;
<font color='#0000FF'>mutable</font> node<font color='#5555FF'>*</font> current_enumeration_node;
<font color='#0000FF'>mutable</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> current_enumeration_pos;
<font color='#009900'>// restricted functions
</font> <b><a name='sequence_kernel_2'></a>sequence_kernel_2</b><font face='Lucida Console'>(</font>sequence_kernel_2<font color='#5555FF'>&</font><font face='Lucida Console'>)</font>; <font color='#009900'>// copy constructor
</font> sequence_kernel_2<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font face='Lucida Console'>(</font>sequence_kernel_2<font color='#5555FF'>&</font><font face='Lucida Console'>)</font>; <font color='#009900'>// assignment operator
</font>
<b>}</b>;
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'>inline</font> <font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font><font color='#5555FF'>&</font> a,
sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font><font color='#5555FF'>&</font> b
<font face='Lucida Console'>)</font> <b>{</b> a.<font color='#BB00BB'>swap</font><font face='Lucida Console'>(</font>b<font face='Lucida Console'>)</font>; <b>}</b>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> <b><a name='deserialize'></a>deserialize</b> <font face='Lucida Console'>(</font>
sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font><font color='#5555FF'>&</font> item,
std::istream<font color='#5555FF'>&</font> in
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>try</font>
<b>{</b>
item.<font color='#BB00BB'>clear</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> size;
<font color='#BB00BB'>deserialize</font><font face='Lucida Console'>(</font>size,in<font face='Lucida Console'>)</font>;
T temp;
<font color='#0000FF'>for</font> <font face='Lucida Console'>(</font><font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> i <font color='#5555FF'>=</font> <font color='#979000'>0</font>; i <font color='#5555FF'><</font> size; <font color='#5555FF'>+</font><font color='#5555FF'>+</font>i<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>deserialize</font><font face='Lucida Console'>(</font>temp,in<font face='Lucida Console'>)</font>;
item.<font color='#BB00BB'>add</font><font face='Lucida Console'>(</font>i,temp<font face='Lucida Console'>)</font>;
<b>}</b>
<b>}</b>
<font color='#0000FF'>catch</font> <font face='Lucida Console'>(</font>serialization_error<font color='#5555FF'>&</font> e<font face='Lucida Console'>)</font>
<b>{</b>
item.<font color='#BB00BB'>clear</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>;
<font color='#0000FF'>throw</font> <font color='#BB00BB'>serialization_error</font><font face='Lucida Console'>(</font>e.info <font color='#5555FF'>+</font> "<font color='#CC0000'>\n while deserializing object of type sequence_kernel_2</font>"<font face='Lucida Console'>)</font>;
<b>}</b>
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font> <font color='#009900'>// member function definitions
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
~<b><a name='sequence_kernel_2'></a>sequence_kernel_2</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>delete_nodes</font><font face='Lucida Console'>(</font>current_node,sequence_size<font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='clear'></a>clear</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>sequence_size <font color='#5555FF'>!</font><font color='#5555FF'>=</font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>delete_nodes</font><font face='Lucida Console'>(</font>current_node,sequence_size<font face='Lucida Console'>)</font>;
sequence_size <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
<b>}</b>
<font color='#009900'>// reset the enumerator
</font> <font color='#BB00BB'>reset</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='add'></a>add</b> <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos,
T<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#009900'>// make new node and swap item into it
</font> node<font color='#5555FF'>*</font> new_node <font color='#5555FF'>=</font> <font color='#0000FF'>new</font> node;
<font color='#BB00BB'>exchange</font><font face='Lucida Console'>(</font>item,new_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>item<font face='Lucida Console'>)</font>;
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>sequence_size <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>pos <font color='#5555FF'>=</font><font color='#5555FF'>=</font> sequence_size<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>move_to_pos</font><font face='Lucida Console'>(</font>current_node,current_pos,pos<font color='#5555FF'>-</font><font color='#979000'>1</font>,sequence_size<font face='Lucida Console'>)</font>;
node<font color='#5555FF'>&</font> n_node <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>new_node;
node<font color='#5555FF'>&</font> c_node <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>current_node;
<font color='#009900'>// make new node point to the nodes to its left and right
</font> n_node.right <font color='#5555FF'>=</font> c_node.right;
n_node.left <font color='#5555FF'>=</font> current_node;
<font color='#009900'>// make the left node point back to new_node
</font> c_node.right<font color='#5555FF'>-</font><font color='#5555FF'>></font>left <font color='#5555FF'>=</font> new_node;
<font color='#009900'>// make the right node point back to new_node
</font> c_node.right <font color='#5555FF'>=</font> new_node;
current_pos <font color='#5555FF'>=</font> pos;
<b>}</b>
<font color='#0000FF'>else</font>
<b>{</b>
<font color='#BB00BB'>move_to_pos</font><font face='Lucida Console'>(</font>current_node,current_pos,pos,sequence_size<font face='Lucida Console'>)</font>;
node<font color='#5555FF'>&</font> n_node <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>new_node;
node<font color='#5555FF'>&</font> c_node <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>current_node;
<font color='#009900'>// make new node point to the nodes to its left and right
</font> n_node.right <font color='#5555FF'>=</font> current_node;
n_node.left <font color='#5555FF'>=</font> c_node.left;
<font color='#009900'>// make the left node point back to new_node
</font> c_node.left<font color='#5555FF'>-</font><font color='#5555FF'>></font>right <font color='#5555FF'>=</font> new_node;
<font color='#009900'>// make the right node point back to new_node
</font> c_node.left <font color='#5555FF'>=</font> new_node;
<b>}</b>
<b>}</b>
<font color='#0000FF'>else</font>
<b>{</b>
current_pos <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
new_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>left <font color='#5555FF'>=</font> new_node;
new_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>right <font color='#5555FF'>=</font> new_node;
<b>}</b>
<font color='#009900'>// make the new node the current node
</font> current_node <font color='#5555FF'>=</font> new_node;
<font color='#5555FF'>+</font><font color='#5555FF'>+</font>sequence_size;
<font color='#009900'>// reset the enumerator
</font> <font color='#BB00BB'>reset</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='remove'></a>remove</b> <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos,
T<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>move_to_pos</font><font face='Lucida Console'>(</font>current_node,current_pos,pos,sequence_size<font face='Lucida Console'>)</font>;
node<font color='#5555FF'>&</font> c_node <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>current_node;
<font color='#BB00BB'>exchange</font><font face='Lucida Console'>(</font>c_node.item,item<font face='Lucida Console'>)</font>;
node<font color='#5555FF'>*</font> temp <font color='#5555FF'>=</font> current_node;
<font color='#009900'>// close up gap left by remove
</font> c_node.left<font color='#5555FF'>-</font><font color='#5555FF'>></font>right <font color='#5555FF'>=</font> c_node.right;
c_node.right<font color='#5555FF'>-</font><font color='#5555FF'>></font>left <font color='#5555FF'>=</font> c_node.left;
current_node <font color='#5555FF'>=</font> c_node.right;
<font color='#5555FF'>-</font><font color='#5555FF'>-</font>sequence_size;
<font color='#0000FF'>delete</font> temp;
<font color='#009900'>// reset the enumerator
</font> <font color='#BB00BB'>reset</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='operator'></a>operator</b>[] <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#BB00BB'>move_to_pos</font><font face='Lucida Console'>(</font>current_node,current_pos,pos,sequence_size<font face='Lucida Console'>)</font>;
<font color='#0000FF'>return</font> current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>item;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='cat'></a>cat</b> <font face='Lucida Console'>(</font>
sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font><font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>item.sequence_size <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>sequence_size <font color='#5555FF'>></font> <font color='#979000'>0</font><font face='Lucida Console'>)</font>
<b>{</b>
<font color='#009900'>// move both sequences to a convenient location
</font> <font color='#BB00BB'>move_to_pos</font><font face='Lucida Console'>(</font>current_node,current_pos,<font color='#979000'>0</font>,sequence_size<font face='Lucida Console'>)</font>;
item.<font color='#BB00BB'>move_to_pos</font> <font face='Lucida Console'>(</font>
item.current_node,
item.current_pos,
item.sequence_size<font color='#5555FF'>-</font><font color='#979000'>1</font>,
item.sequence_size
<font face='Lucida Console'>)</font>;
<font color='#009900'>// make copies of poitners
</font> node<font color='#5555FF'>&</font> item_right <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>item.current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>right;
node<font color='#5555FF'>&</font> left <font color='#5555FF'>=</font> <font color='#5555FF'>*</font>current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>left;
item.current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>right <font color='#5555FF'>=</font> current_node;
current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>left <font color='#5555FF'>=</font> item.current_node;
left.right <font color='#5555FF'>=</font> <font color='#5555FF'>&</font>item_right;
item_right.left <font color='#5555FF'>=</font> <font color='#5555FF'>&</font>left;
<font color='#009900'>// set sizes
</font> sequence_size <font color='#5555FF'>+</font><font color='#5555FF'>=</font> item.sequence_size;
item.sequence_size <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
<b>}</b>
<font color='#0000FF'>else</font>
<b>{</b>
<font color='#009900'>// *this is empty so just swap
</font> item.<font color='#BB00BB'>swap</font><font face='Lucida Console'>(</font><font color='#5555FF'>*</font><font color='#0000FF'>this</font><font face='Lucida Console'>)</font>;
<b>}</b>
<b>}</b>
item.<font color='#BB00BB'>clear</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>;
<font color='#009900'>// reset the enumerator
</font> <font color='#BB00BB'>reset</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
T<font color='#5555FF'>&</font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='operator'></a>operator</b>[] <font face='Lucida Console'>(</font>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>move_to_pos</font><font face='Lucida Console'>(</font>current_node,current_pos,pos,sequence_size<font face='Lucida Console'>)</font>;
<font color='#0000FF'>return</font> current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>item;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>size_t</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='size'></a>size</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>return</font> sequence_size;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font><font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> sequence_size_temp <font color='#5555FF'>=</font> item.sequence_size;
node<font color='#5555FF'>*</font> current_node_temp <font color='#5555FF'>=</font> item.current_node;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> current_pos_temp <font color='#5555FF'>=</font> item.current_pos;
<font color='#0000FF'><u>bool</u></font> at_start_temp <font color='#5555FF'>=</font> item.at_start_;
node<font color='#5555FF'>*</font> current_enumeration_node_temp <font color='#5555FF'>=</font> item.current_enumeration_node;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> current_enumeration_pos_temp <font color='#5555FF'>=</font> item.current_enumeration_pos;
item.sequence_size <font color='#5555FF'>=</font> sequence_size;
item.current_node <font color='#5555FF'>=</font> current_node;
item.current_pos <font color='#5555FF'>=</font> current_pos;
item.at_start_ <font color='#5555FF'>=</font> at_start_;
item.current_enumeration_node <font color='#5555FF'>=</font> current_enumeration_node;
item.current_enumeration_pos <font color='#5555FF'>=</font> current_enumeration_pos;
sequence_size <font color='#5555FF'>=</font> sequence_size_temp;
current_node <font color='#5555FF'>=</font> current_node_temp;
current_pos <font color='#5555FF'>=</font> current_pos_temp;
at_start_ <font color='#5555FF'>=</font> at_start_temp;
current_enumeration_node <font color='#5555FF'>=</font> current_enumeration_node_temp;
current_enumeration_pos <font color='#5555FF'>=</font> current_enumeration_pos_temp;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font> <font color='#009900'>// enumerable function definitions
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>bool</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='at_start'></a>at_start</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>return</font> at_start_;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='reset'></a>reset</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
at_start_ <font color='#5555FF'>=</font> <font color='#979000'>true</font>;
current_enumeration_node <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>bool</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='current_element_valid'></a>current_element_valid</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>return</font> <font face='Lucida Console'>(</font>current_enumeration_node<font color='#5555FF'>!</font><font color='#5555FF'>=</font><font color='#979000'>0</font><font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='element'></a>element</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>return</font> current_enumeration_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>item;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
T<font color='#5555FF'>&</font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='element'></a>element</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#0000FF'>return</font> current_enumeration_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>item;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>bool</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='move_next'></a>move_next</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>at_start_ <font color='#5555FF'>&</font><font color='#5555FF'>&</font> sequence_size<font color='#5555FF'>></font><font color='#979000'>0</font><font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>move_to_pos</font><font face='Lucida Console'>(</font>current_node,current_pos,<font color='#979000'>0</font>,sequence_size<font face='Lucida Console'>)</font>;
current_enumeration_node <font color='#5555FF'>=</font> current_node;
current_enumeration_pos <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
<b>}</b>
<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>current_enumeration_node<font color='#5555FF'>!</font><font color='#5555FF'>=</font><font color='#979000'>0</font><font face='Lucida Console'>)</font>
<b>{</b>
<font color='#5555FF'>+</font><font color='#5555FF'>+</font>current_enumeration_pos;
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>current_enumeration_pos<font color='#5555FF'><</font>sequence_size<font face='Lucida Console'>)</font>
<b>{</b>
current_enumeration_node <font color='#5555FF'>=</font> current_enumeration_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>right;
<b>}</b>
<font color='#0000FF'>else</font>
<b>{</b>
<font color='#009900'>// we have reached the end of the sequence
</font> current_enumeration_node <font color='#5555FF'>=</font> <font color='#979000'>0</font>;
<b>}</b>
<b>}</b>
at_start_ <font color='#5555FF'>=</font> <font color='#979000'>false</font>;
<font color='#0000FF'>return</font> <font face='Lucida Console'>(</font>current_enumeration_node<font color='#5555FF'>!</font><font color='#5555FF'>=</font><font color='#979000'>0</font><font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font> <font color='#009900'>// remover function definitions
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='remove_any'></a>remove_any</b> <font face='Lucida Console'>(</font>
T<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#BB00BB'>remove</font><font face='Lucida Console'>(</font><font color='#979000'>0</font>,item<font face='Lucida Console'>)</font>;
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font> <font color='#009900'>// private member function definitions
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font><font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='delete_nodes'></a>delete_nodes</b> <font face='Lucida Console'>(</font>
node<font color='#5555FF'>*</font> current_node,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> sequence_size
<font face='Lucida Console'>)</font>
<b>{</b>
node<font color='#5555FF'>*</font> temp;
<font color='#0000FF'>while</font> <font face='Lucida Console'>(</font>sequence_size<font face='Lucida Console'>)</font>
<b>{</b>
temp <font color='#5555FF'>=</font> current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>right;
<font color='#0000FF'>delete</font> current_node;
current_node <font color='#5555FF'>=</font> temp;
<font color='#5555FF'>-</font><font color='#5555FF'>-</font>sequence_size;
<b>}</b>
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> mem_manager
<font color='#5555FF'>></font>
<font color='#0000FF'><u>void</u></font> sequence_kernel_2<font color='#5555FF'><</font>T,mem_manager<font color='#5555FF'>></font>::
<b><a name='move_to_pos'></a>move_to_pos</b> <font face='Lucida Console'>(</font>
node<font color='#5555FF'>*</font><font color='#5555FF'>&</font> current_node,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font><font color='#5555FF'>&</font> current_pos,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> pos,
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> size
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
<b>{</b>
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font> current_pos <font color='#5555FF'>></font> pos<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#009900'>// number of hops in each direction needed to reach pos
</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> right <font color='#5555FF'>=</font> size <font color='#5555FF'>+</font> pos <font color='#5555FF'>-</font> current_pos;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> left <font color='#5555FF'>=</font> current_pos <font color='#5555FF'>-</font> pos;
current_pos <font color='#5555FF'>=</font> pos;
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>left <font color='#5555FF'><</font> right<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#009900'>// move left to position pos
</font> <font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>; left <font color='#5555FF'>></font> <font color='#979000'>0</font>; <font color='#5555FF'>-</font><font color='#5555FF'>-</font>left<font face='Lucida Console'>)</font>
current_node <font color='#5555FF'>=</font> current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>left;
<b>}</b>
<font color='#0000FF'>else</font>
<b>{</b>
<font color='#009900'>// move left to position pos
</font> <font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>; right <font color='#5555FF'>></font> <font color='#979000'>0</font>; <font color='#5555FF'>-</font><font color='#5555FF'>-</font>right<font face='Lucida Console'>)</font>
current_node <font color='#5555FF'>=</font> current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>right;
<b>}</b>
<b>}</b>
<font color='#0000FF'>else</font> <font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>current_pos <font color='#5555FF'>!</font><font color='#5555FF'>=</font> pos<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#009900'>// number of hops in each direction needed to reach pos
</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> right <font color='#5555FF'>=</font> pos <font color='#5555FF'>-</font> current_pos;
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>long</u></font> left <font color='#5555FF'>=</font> size <font color='#5555FF'>-</font> pos <font color='#5555FF'>+</font> current_pos;
current_pos <font color='#5555FF'>=</font> pos;
<font color='#0000FF'>if</font> <font face='Lucida Console'>(</font>left <font color='#5555FF'><</font> right<font face='Lucida Console'>)</font>
<b>{</b>
<font color='#009900'>// move left to position pos
</font> <font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>; left <font color='#5555FF'>></font> <font color='#979000'>0</font>; <font color='#5555FF'>-</font><font color='#5555FF'>-</font>left<font face='Lucida Console'>)</font>
current_node <font color='#5555FF'>=</font> current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>left;
<b>}</b>
<font color='#0000FF'>else</font>
<b>{</b>
<font color='#009900'>// move left to position pos
</font> <font color='#0000FF'>for</font> <font face='Lucida Console'>(</font>; right <font color='#5555FF'>></font> <font color='#979000'>0</font>; <font color='#5555FF'>-</font><font color='#5555FF'>-</font>right<font face='Lucida Console'>)</font>
current_node <font color='#5555FF'>=</font> current_node<font color='#5555FF'>-</font><font color='#5555FF'>></font>right;
<b>}</b>
<b>}</b>
<b>}</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<b>}</b>
<font color='#0000FF'>#endif</font> <font color='#009900'>// DLIB_SEQUENCE_KERNEl_2_
</font>
</pre></body></html>