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<a href="#raptor2-section-avltree.description" class="shortcut">Description</a></span>
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<a name="raptor2-section-avltree"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="raptor2-section-avltree.top_of_page"></a>section-avltree</span></h2>
<p>section-avltree</p>
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<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="raptor2-section-avltree.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_proto_type">
<col class="functions_proto_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="returnvalue">raptor_avltree</span></a> *
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-new-avltree" title="raptor_new_avltree ()">raptor_new_avltree</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-free-avltree" title="raptor_free_avltree ()">raptor_free_avltree</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-add" title="raptor_avltree_add ()">raptor_avltree_add</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-delete" title="raptor_avltree_delete ()">raptor_avltree_delete</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-print" title="raptor_avltree_print ()">raptor_avltree_print</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span> *
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-remove" title="raptor_avltree_remove ()">raptor_avltree_remove</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span> *
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-search" title="raptor_avltree_search ()">raptor_avltree_search</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-set-print-handler" title="raptor_avltree_set_print_handler ()">raptor_avltree_set_print_handler</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-size" title="raptor_avltree_size ()">raptor_avltree_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-trim" title="raptor_avltree_trim ()">raptor_avltree_trim</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-visit" title="raptor_avltree_visit ()">raptor_avltree_visit</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator"><span class="returnvalue">raptor_avltree_iterator</span></a> *
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-new-avltree-iterator" title="raptor_new_avltree_iterator ()">raptor_new_avltree_iterator</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-free-avltree-iterator" title="raptor_free_avltree_iterator ()">raptor_free_avltree_iterator</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span> *
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator-get" title="raptor_avltree_iterator_get ()">raptor_avltree_iterator_get</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator-is-end" title="raptor_avltree_iterator_is_end ()">raptor_avltree_iterator_is_end</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator-next" title="raptor_avltree_iterator_next ()">raptor_avltree_iterator_next</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="raptor2-section-avltree.html#raptor-avltree-visit-handler" title="raptor_avltree_visit_handler ()">*raptor_avltree_visit_handler</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="raptor2-section-avltree.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="other_proto_type">
<col class="other_proto_name">
</colgroup>
<tbody>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree">raptor_avltree</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="raptor2-section-avltree.html#raptor-avltree-bitflags" title="enum raptor_avltree_bitflags">raptor_avltree_bitflags</a></td>
</tr>
<tr>
<td class="typedef_keyword">typedef</td>
<td class="function_name"><a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator">raptor_avltree_iterator</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="raptor2-section-avltree.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="raptor2-section-avltree.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="raptor-new-avltree"></a><h3>raptor_new_avltree ()</h3>
<pre class="programlisting"><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="returnvalue">raptor_avltree</span></a> *
raptor_new_avltree (<em class="parameter"><code><a class="link" href="raptor2-section-general.html#raptor-data-compare-handler" title="raptor_data_compare_handler ()"><span class="type">raptor_data_compare_handler</span></a> compare_handler</code></em>,
<em class="parameter"><code><a class="link" href="raptor2-section-general.html#raptor-data-free-handler" title="raptor_data_free_handler ()"><span class="type">raptor_data_free_handler</span></a> free_handler</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> flags</code></em>);</pre>
<p>AVL Tree Constructor</p>
<div class="refsect3">
<a name="raptor-new-avltree.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>compare_handler</p></td>
<td class="parameter_description"><p>item comparison handler for ordering</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>free_handler</p></td>
<td class="parameter_description"><p>item free handler (or NULL)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p>AVLTree flags - bitmask of <a class="link" href="raptor2-section-avltree.html#raptor-avltree-bitflags" title="enum raptor_avltree_bitflags"><span class="type">raptor_avltree_bitflags</span></a> flags.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-new-avltree.returns"></a><h4>Returns</h4>
<p> new AVL Tree or NULL on failure</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-free-avltree"></a><h3>raptor_free_avltree ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
raptor_free_avltree (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>);</pre>
<p>AVL Tree destructor</p>
<div class="refsect3">
<a name="raptor-free-avltree.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVLTree object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-add"></a><h3>raptor_avltree_add ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
raptor_avltree_add (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code><span class="type">void</span> *p_data</code></em>);</pre>
<p>add an item to an AVL Tree</p>
<p>The item added becomes owned by the AVL Tree, and will be freed by
the free_handler argument given to <a class="link" href="raptor2-section-avltree.html#raptor-new-avltree" title="raptor_new_avltree ()"><code class="function">raptor_new_avltree()</code></a>.</p>
<div class="refsect3">
<a name="raptor-avltree-add.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>p_data</p></td>
<td class="parameter_description"><p>pointer to data item</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-add.returns"></a><h4>Returns</h4>
<p> 0 on success, >0 if equivalent item exists (and the old element remains in the tree), <0 on failure</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-delete"></a><h3>raptor_avltree_delete ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
raptor_avltree_delete (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code><span class="type">void</span> *p_data</code></em>);</pre>
<p>Remove an item from an AVL Tree and free it</p>
<div class="refsect3">
<a name="raptor-avltree-delete.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>p_data</p></td>
<td class="parameter_description"><p>pointer to data item</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-delete.returns"></a><h4>Returns</h4>
<p> non-0 on failure</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-print"></a><h3>raptor_avltree_print ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
raptor_avltree_print (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code><span class="type">FILE</span> *stream</code></em>);</pre>
<p>Print the items in the tree in order to a stream (for debugging)</p>
<div class="refsect3">
<a name="raptor-avltree-print.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream</p></td>
<td class="parameter_description"><p>stream to print to</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-print.returns"></a><h4>Returns</h4>
<p> non-0 on failure</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-remove"></a><h3>raptor_avltree_remove ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> *
raptor_avltree_remove (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code><span class="type">void</span> *p_data</code></em>);</pre>
<p>Remove an item from an AVL Tree and return it</p>
<p>The item removed is no longer owned by the AVL Tree and is
owned by the caller.</p>
<div class="refsect3">
<a name="raptor-avltree-remove.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>p_data</p></td>
<td class="parameter_description"><p>pointer to data item</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-remove.returns"></a><h4>Returns</h4>
<p> object or NULL on failure or if not found</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-search"></a><h3>raptor_avltree_search ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> *
raptor_avltree_search (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code>const <span class="type">void</span> *p_data</code></em>);</pre>
<p>Find an item in an AVL Tree</p>
<div class="refsect3">
<a name="raptor-avltree-search.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>p_data</p></td>
<td class="parameter_description"><p>pointer to data item</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-search.returns"></a><h4>Returns</h4>
<p> shared pointer to item (still owned by AVL Tree) or NULL on failure or if not found</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-set-print-handler"></a><h3>raptor_avltree_set_print_handler ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
raptor_avltree_set_print_handler (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code><a class="link" href="raptor2-section-general.html#raptor-data-print-handler" title="raptor_data_print_handler ()"><span class="type">raptor_data_print_handler</span></a> print_handler</code></em>);</pre>
<p>Set the handler for printing an item in a tree</p>
<div class="refsect3">
<a name="raptor-avltree-set-print-handler.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>print_handler</p></td>
<td class="parameter_description"><p>print function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-size"></a><h3>raptor_avltree_size ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
raptor_avltree_size (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>);</pre>
<p>Get the number of items in the AVL Tree</p>
<div class="refsect3">
<a name="raptor-avltree-size.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-size.returns"></a><h4>Returns</h4>
<p> number of items in tree</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-trim"></a><h3>raptor_avltree_trim ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
raptor_avltree_trim (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>);</pre>
<p>Delete all nodes from an AVL tree but keep the shell.</p>
<div class="refsect3">
<a name="raptor-avltree-trim.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVLTree object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-visit"></a><h3>raptor_avltree_visit ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
raptor_avltree_visit (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree-visit-handler" title="raptor_avltree_visit_handler ()"><span class="type">raptor_avltree_visit_handler</span></a> visit_handler</code></em>,
<em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
<p>Perform an in-order visit of the items in the AVL Tree</p>
<div class="refsect3">
<a name="raptor-avltree-visit.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p>AVL Tree object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>visit_handler</p></td>
<td class="parameter_description"><p>visit function to call at each item</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data pointer fo visit function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-visit.returns"></a><h4>Returns</h4>
<p> non-0 if traversal was terminated early by <em class="parameter"><code>visit_handler</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-new-avltree-iterator"></a><h3>raptor_new_avltree_iterator ()</h3>
<pre class="programlisting"><a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator"><span class="returnvalue">raptor_avltree_iterator</span></a> *
raptor_new_avltree_iterator (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> *tree</code></em>,
<em class="parameter"><code><span class="type">void</span> *range</code></em>,
<em class="parameter"><code><a class="link" href="raptor2-section-general.html#raptor-data-free-handler" title="raptor_data_free_handler ()"><span class="type">raptor_data_free_handler</span></a> range_free_handler</code></em>,
<em class="parameter"><code><span class="type">int</span> direction</code></em>);</pre>
<p>Get an in-order iterator for the start of a range, or the entire contents</p>
<p>If range is NULL, the entire tree is walked in order. If range
specifies a range (i.e. the tree comparison function will 'match'
(return 0 for) range and /several/ nodes), the iterator will be
placed at the leftmost child matching range, and
raptor_avltree_iterator_next will iterate over all nodes (and only
nodes) that match range.</p>
<div class="refsect3">
<a name="raptor-new-avltree-iterator.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>tree</p></td>
<td class="parameter_description"><p><a class="link" href="raptor2-section-avltree.html#raptor-avltree" title="raptor_avltree"><span class="type">raptor_avltree</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>range</p></td>
<td class="parameter_description"><p>range</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>range_free_handler</p></td>
<td class="parameter_description"><p>function to free <em class="parameter"><code>range</code></em>
object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>direction</p></td>
<td class="parameter_description"><p><0 to go 'backwards' otherwise 'forwards'</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-new-avltree-iterator.returns"></a><h4>Returns</h4>
<p> a new <a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator"><span class="type">raptor_avltree_iterator</span></a> object or NULL on failure</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-free-avltree-iterator"></a><h3>raptor_free_avltree_iterator ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
raptor_free_avltree_iterator (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator"><span class="type">raptor_avltree_iterator</span></a> *iterator</code></em>);</pre>
<p>AVL Tree Iterator destructor</p>
<div class="refsect3">
<a name="raptor-free-avltree-iterator.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>iterator</p></td>
<td class="parameter_description"><p>AVL Tree iterator object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-iterator-get"></a><h3>raptor_avltree_iterator_get ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> *
raptor_avltree_iterator_get (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator"><span class="type">raptor_avltree_iterator</span></a> *iterator</code></em>);</pre>
<p>Get current iteration object</p>
<div class="refsect3">
<a name="raptor-avltree-iterator-get.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>iterator</p></td>
<td class="parameter_description"><p>AVL Tree iterator object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-iterator-get.returns"></a><h4>Returns</h4>
<p> object or NULL if iteration is finished</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-iterator-is-end"></a><h3>raptor_avltree_iterator_is_end ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
raptor_avltree_iterator_is_end (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator"><span class="type">raptor_avltree_iterator</span></a> *iterator</code></em>);</pre>
<p>Test if an iteration is finished</p>
<div class="refsect3">
<a name="raptor-avltree-iterator-is-end.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>iterator</p></td>
<td class="parameter_description"><p>AVL Tree iterator object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-iterator-is-end.returns"></a><h4>Returns</h4>
<p> non-0 if iteration is finished</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-iterator-next"></a><h3>raptor_avltree_iterator_next ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
raptor_avltree_iterator_next (<em class="parameter"><code><a class="link" href="raptor2-section-avltree.html#raptor-avltree-iterator" title="raptor_avltree_iterator"><span class="type">raptor_avltree_iterator</span></a> *iterator</code></em>);</pre>
<p>Move iteration to next/prev object</p>
<div class="refsect3">
<a name="raptor-avltree-iterator-next.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>iterator</p></td>
<td class="parameter_description"><p>AVL Tree iterator object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-iterator-next.returns"></a><h4>Returns</h4>
<p> non-0 if iteration is finished</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-visit-handler"></a><h3>raptor_avltree_visit_handler ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
<span class="c_punctuation">(</span>*raptor_avltree_visit_handler<span class="c_punctuation">)</span> (<em class="parameter"><code><span class="type">int</span> depth</code></em>,
<em class="parameter"><code><span class="type">void</span> *data</code></em>,
<em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
<p>AVL Tree visitor function as given to <a class="link" href="raptor2-section-avltree.html#raptor-avltree-visit" title="raptor_avltree_visit ()"><code class="function">raptor_avltree_visit()</code></a></p>
<div class="refsect3">
<a name="raptor-avltree-visit-handler.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>depth</p></td>
<td class="parameter_description"><p>depth of object in tree</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>data object being visited</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data arg to <a class="link" href="raptor2-section-avltree.html#raptor-avltree-visit" title="raptor_avltree_visit ()"><code class="function">raptor_avltree_visit()</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="raptor-avltree-visit-handler.returns"></a><h4>Returns</h4>
<p> non-0 to terminate visit early.</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="raptor2-section-avltree.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="raptor-avltree"></a><h3>raptor_avltree</h3>
<pre class="programlisting">typedef struct raptor_avltree_s raptor_avltree;
</pre>
<p>AVL Tree</p>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-bitflags"></a><h3>enum raptor_avltree_bitflags</h3>
<p>Bit flags for AVL Tree class constructor <a class="link" href="raptor2-section-avltree.html#raptor-new-avltree" title="raptor_new_avltree ()"><code class="function">raptor_new_avltree()</code></a></p>
<div class="refsect3">
<a name="raptor-avltree-bitflags.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody><tr>
<td class="enum_member_name"><p><a name="RAPTOR-AVLTREE-FLAG-REPLACE-DUPLICATES:CAPS"></a>RAPTOR_AVLTREE_FLAG_REPLACE_DUPLICATES</p></td>
<td class="enum_member_description">
<p>If set <a class="link" href="raptor2-section-avltree.html#raptor-avltree-add" title="raptor_avltree_add ()"><code class="function">raptor_avltree_add()</code></a> will replace any duplicate items. If not set, <a class="link" href="raptor2-section-avltree.html#raptor-avltree-add" title="raptor_avltree_add ()"><code class="function">raptor_avltree_add()</code></a> will not replace them and will return status >0 when adding a duplicate. (Default is not set)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="raptor-avltree-iterator"></a><h3>raptor_avltree_iterator</h3>
<pre class="programlisting">typedef struct raptor_avltree_iterator_s raptor_avltree_iterator;
</pre>
<p>AVL Tree Iterator as created by <a class="link" href="raptor2-section-avltree.html#raptor-new-avltree-iterator" title="raptor_new_avltree_iterator ()"><code class="function">raptor_new_avltree_iterator()</code></a></p>
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