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|
||
<a href="#325" id="325">325</a>
|
||
<a href="#326" id="326">326</a>
|
||
<a href="#327" id="327">327</a>
|
||
<a href="#328" id="328">328</a>
|
||
<a href="#329" id="329">329</a>
|
||
<a href="#330" id="330">330</a>
|
||
<a href="#331" id="331">331</a>
|
||
<a href="#332" id="332">332</a>
|
||
<a href="#333" id="333">333</a>
|
||
<a href="#334" id="334">334</a>
|
||
<a href="#335" id="335">335</a>
|
||
<a href="#336" id="336">336</a>
|
||
<a href="#337" id="337">337</a>
|
||
<a href="#338" id="338">338</a>
|
||
<a href="#339" id="339">339</a>
|
||
<a href="#340" id="340">340</a>
|
||
<a href="#341" id="341">341</a>
|
||
<a href="#342" id="342">342</a>
|
||
<a href="#343" id="343">343</a>
|
||
<a href="#344" id="344">344</a>
|
||
<a href="#345" id="345">345</a>
|
||
<a href="#346" id="346">346</a>
|
||
<a href="#347" id="347">347</a>
|
||
<a href="#348" id="348">348</a>
|
||
<a href="#349" id="349">349</a>
|
||
<a href="#350" id="350">350</a>
|
||
<a href="#351" id="351">351</a>
|
||
<a href="#352" id="352">352</a>
|
||
<a href="#353" id="353">353</a>
|
||
<a href="#354" id="354">354</a>
|
||
<a href="#355" id="355">355</a>
|
||
<a href="#356" id="356">356</a>
|
||
<a href="#357" id="357">357</a>
|
||
<a href="#358" id="358">358</a>
|
||
<a href="#359" id="359">359</a>
|
||
<a href="#360" id="360">360</a>
|
||
<a href="#361" id="361">361</a>
|
||
<a href="#362" id="362">362</a>
|
||
<a href="#363" id="363">363</a>
|
||
<a href="#364" id="364">364</a>
|
||
<a href="#365" id="365">365</a>
|
||
<a href="#366" id="366">366</a>
|
||
<a href="#367" id="367">367</a>
|
||
<a href="#368" id="368">368</a>
|
||
<a href="#369" id="369">369</a>
|
||
<a href="#370" id="370">370</a>
|
||
<a href="#371" id="371">371</a>
|
||
<a href="#372" id="372">372</a>
|
||
<a href="#373" id="373">373</a>
|
||
<a href="#374" id="374">374</a>
|
||
<a href="#375" id="375">375</a>
|
||
<a href="#376" id="376">376</a>
|
||
<a href="#377" id="377">377</a>
|
||
<a href="#378" id="378">378</a>
|
||
<a href="#379" id="379">379</a>
|
||
<a href="#380" id="380">380</a>
|
||
<a href="#381" id="381">381</a>
|
||
<a href="#382" id="382">382</a>
|
||
<a href="#383" id="383">383</a>
|
||
<a href="#384" id="384">384</a>
|
||
<a href="#385" id="385">385</a>
|
||
<a href="#386" id="386">386</a>
|
||
<a href="#387" id="387">387</a>
|
||
<a href="#388" id="388">388</a>
|
||
<a href="#389" id="389">389</a>
|
||
<a href="#390" id="390">390</a>
|
||
<a href="#391" id="391">391</a>
|
||
<a href="#392" id="392">392</a>
|
||
<a href="#393" id="393">393</a>
|
||
<a href="#394" id="394">394</a>
|
||
<a href="#395" id="395">395</a>
|
||
<a href="#396" id="396">396</a>
|
||
<a href="#397" id="397">397</a>
|
||
<a href="#398" id="398">398</a>
|
||
<a href="#399" id="399">399</a>
|
||
<a href="#400" id="400">400</a>
|
||
<a href="#401" id="401">401</a>
|
||
<a href="#402" id="402">402</a>
|
||
<a href="#403" id="403">403</a>
|
||
<a href="#404" id="404">404</a>
|
||
<a href="#405" id="405">405</a>
|
||
<a href="#406" id="406">406</a>
|
||
<a href="#407" id="407">407</a>
|
||
<a href="#408" id="408">408</a>
|
||
<a href="#409" id="409">409</a>
|
||
<a href="#410" id="410">410</a>
|
||
<a href="#411" id="411">411</a>
|
||
<a href="#412" id="412">412</a>
|
||
<a href="#413" id="413">413</a>
|
||
<a href="#414" id="414">414</a>
|
||
<a href="#415" id="415">415</a>
|
||
<a href="#416" id="416">416</a>
|
||
<a href="#417" id="417">417</a>
|
||
<a href="#418" id="418">418</a>
|
||
<a href="#419" id="419">419</a>
|
||
<a href="#420" id="420">420</a>
|
||
<a href="#421" id="421">421</a>
|
||
<a href="#422" id="422">422</a>
|
||
<a href="#423" id="423">423</a>
|
||
<a href="#424" id="424">424</a>
|
||
<a href="#425" id="425">425</a>
|
||
<a href="#426" id="426">426</a>
|
||
<a href="#427" id="427">427</a>
|
||
<a href="#428" id="428">428</a>
|
||
<a href="#429" id="429">429</a>
|
||
<a href="#430" id="430">430</a>
|
||
<a href="#431" id="431">431</a>
|
||
<a href="#432" id="432">432</a>
|
||
<a href="#433" id="433">433</a>
|
||
<a href="#434" id="434">434</a>
|
||
<a href="#435" id="435">435</a>
|
||
<a href="#436" id="436">436</a>
|
||
<a href="#437" id="437">437</a>
|
||
<a href="#438" id="438">438</a>
|
||
<a href="#439" id="439">439</a>
|
||
<a href="#440" id="440">440</a>
|
||
<a href="#441" id="441">441</a>
|
||
<a href="#442" id="442">442</a>
|
||
<a href="#443" id="443">443</a>
|
||
<a href="#444" id="444">444</a>
|
||
<a href="#445" id="445">445</a>
|
||
<a href="#446" id="446">446</a>
|
||
<a href="#447" id="447">447</a>
|
||
<a href="#448" id="448">448</a>
|
||
<a href="#449" id="449">449</a>
|
||
<a href="#450" id="450">450</a>
|
||
<a href="#451" id="451">451</a>
|
||
<a href="#452" id="452">452</a>
|
||
<a href="#453" id="453">453</a>
|
||
<a href="#454" id="454">454</a>
|
||
<a href="#455" id="455">455</a>
|
||
<a href="#456" id="456">456</a>
|
||
<a href="#457" id="457">457</a>
|
||
<a href="#458" id="458">458</a>
|
||
<a href="#459" id="459">459</a>
|
||
<a href="#460" id="460">460</a>
|
||
<a href="#461" id="461">461</a>
|
||
<a href="#462" id="462">462</a>
|
||
<a href="#463" id="463">463</a>
|
||
<a href="#464" id="464">464</a>
|
||
<a href="#465" id="465">465</a>
|
||
<a href="#466" id="466">466</a>
|
||
<a href="#467" id="467">467</a>
|
||
<a href="#468" id="468">468</a>
|
||
<a href="#469" id="469">469</a>
|
||
<a href="#470" id="470">470</a>
|
||
<a href="#471" id="471">471</a>
|
||
<a href="#472" id="472">472</a>
|
||
<a href="#473" id="473">473</a>
|
||
<a href="#474" id="474">474</a>
|
||
<a href="#475" id="475">475</a>
|
||
<a href="#476" id="476">476</a>
|
||
<a href="#477" id="477">477</a>
|
||
<a href="#478" id="478">478</a>
|
||
<a href="#479" id="479">479</a>
|
||
<a href="#480" id="480">480</a>
|
||
<a href="#481" id="481">481</a>
|
||
<a href="#482" id="482">482</a>
|
||
<a href="#483" id="483">483</a>
|
||
<a href="#484" id="484">484</a>
|
||
<a href="#485" id="485">485</a>
|
||
<a href="#486" id="486">486</a>
|
||
<a href="#487" id="487">487</a>
|
||
<a href="#488" id="488">488</a>
|
||
<a href="#489" id="489">489</a>
|
||
<a href="#490" id="490">490</a>
|
||
<a href="#491" id="491">491</a>
|
||
<a href="#492" id="492">492</a>
|
||
<a href="#493" id="493">493</a>
|
||
<a href="#494" id="494">494</a>
|
||
<a href="#495" id="495">495</a>
|
||
<a href="#496" id="496">496</a>
|
||
<a href="#497" id="497">497</a>
|
||
<a href="#498" id="498">498</a>
|
||
<a href="#499" id="499">499</a>
|
||
<a href="#500" id="500">500</a>
|
||
<a href="#501" id="501">501</a>
|
||
<a href="#502" id="502">502</a>
|
||
<a href="#503" id="503">503</a>
|
||
<a href="#504" id="504">504</a>
|
||
<a href="#505" id="505">505</a>
|
||
<a href="#506" id="506">506</a>
|
||
<a href="#507" id="507">507</a>
|
||
<a href="#508" id="508">508</a>
|
||
<a href="#509" id="509">509</a>
|
||
<a href="#510" id="510">510</a>
|
||
<a href="#511" id="511">511</a>
|
||
<a href="#512" id="512">512</a>
|
||
<a href="#513" id="513">513</a>
|
||
<a href="#514" id="514">514</a>
|
||
<a href="#515" id="515">515</a>
|
||
<a href="#516" id="516">516</a>
|
||
<a href="#517" id="517">517</a>
|
||
<a href="#518" id="518">518</a>
|
||
<a href="#519" id="519">519</a>
|
||
<a href="#520" id="520">520</a>
|
||
<a href="#521" id="521">521</a>
|
||
<a href="#522" id="522">522</a>
|
||
<a href="#523" id="523">523</a>
|
||
<a href="#524" id="524">524</a>
|
||
<a href="#525" id="525">525</a>
|
||
<a href="#526" id="526">526</a>
|
||
<a href="#527" id="527">527</a>
|
||
<a href="#528" id="528">528</a>
|
||
<a href="#529" id="529">529</a>
|
||
<a href="#530" id="530">530</a>
|
||
<a href="#531" id="531">531</a>
|
||
<a href="#532" id="532">532</a>
|
||
<a href="#533" id="533">533</a>
|
||
<a href="#534" id="534">534</a>
|
||
<a href="#535" id="535">535</a>
|
||
<a href="#536" id="536">536</a>
|
||
<a href="#537" id="537">537</a>
|
||
<a href="#538" id="538">538</a>
|
||
<a href="#539" id="539">539</a>
|
||
<a href="#540" id="540">540</a>
|
||
<a href="#541" id="541">541</a>
|
||
<a href="#542" id="542">542</a>
|
||
<a href="#543" id="543">543</a>
|
||
<a href="#544" id="544">544</a>
|
||
<a href="#545" id="545">545</a>
|
||
<a href="#546" id="546">546</a>
|
||
<a href="#547" id="547">547</a>
|
||
<a href="#548" id="548">548</a>
|
||
<a href="#549" id="549">549</a>
|
||
<a href="#550" id="550">550</a>
|
||
<a href="#551" id="551">551</a>
|
||
<a href="#552" id="552">552</a>
|
||
<a href="#553" id="553">553</a>
|
||
<a href="#554" id="554">554</a>
|
||
<a href="#555" id="555">555</a>
|
||
<a href="#556" id="556">556</a>
|
||
<a href="#557" id="557">557</a>
|
||
<a href="#558" id="558">558</a>
|
||
<a href="#559" id="559">559</a>
|
||
<a href="#560" id="560">560</a>
|
||
<a href="#561" id="561">561</a>
|
||
<a href="#562" id="562">562</a>
|
||
<a href="#563" id="563">563</a>
|
||
<a href="#564" id="564">564</a>
|
||
<a href="#565" id="565">565</a>
|
||
<a href="#566" id="566">566</a>
|
||
<a href="#567" id="567">567</a>
|
||
<a href="#568" id="568">568</a>
|
||
<a href="#569" id="569">569</a>
|
||
<a href="#570" id="570">570</a>
|
||
<a href="#571" id="571">571</a>
|
||
<a href="#572" id="572">572</a>
|
||
<a href="#573" id="573">573</a>
|
||
<a href="#574" id="574">574</a>
|
||
<a href="#575" id="575">575</a>
|
||
<a href="#576" id="576">576</a>
|
||
<a href="#577" id="577">577</a>
|
||
<a href="#578" id="578">578</a>
|
||
<a href="#579" id="579">579</a>
|
||
<a href="#580" id="580">580</a>
|
||
<a href="#581" id="581">581</a>
|
||
<a href="#582" id="582">582</a>
|
||
<a href="#583" id="583">583</a>
|
||
<a href="#584" id="584">584</a>
|
||
<a href="#585" id="585">585</a>
|
||
<a href="#586" id="586">586</a>
|
||
<a href="#587" id="587">587</a>
|
||
<a href="#588" id="588">588</a>
|
||
<a href="#589" id="589">589</a>
|
||
<a href="#590" id="590">590</a>
|
||
<a href="#591" id="591">591</a>
|
||
<a href="#592" id="592">592</a>
|
||
<a href="#593" id="593">593</a>
|
||
<a href="#594" id="594">594</a>
|
||
<a href="#595" id="595">595</a>
|
||
<a href="#596" id="596">596</a>
|
||
<a href="#597" id="597">597</a>
|
||
<a href="#598" id="598">598</a>
|
||
<a href="#599" id="599">599</a>
|
||
<a href="#600" id="600">600</a>
|
||
<a href="#601" id="601">601</a>
|
||
<a href="#602" id="602">602</a>
|
||
<a href="#603" id="603">603</a>
|
||
<a href="#604" id="604">604</a>
|
||
<a href="#605" id="605">605</a>
|
||
<a href="#606" id="606">606</a>
|
||
<a href="#607" id="607">607</a>
|
||
<a href="#608" id="608">608</a>
|
||
<a href="#609" id="609">609</a>
|
||
<a href="#610" id="610">610</a>
|
||
<a href="#611" id="611">611</a>
|
||
<a href="#612" id="612">612</a>
|
||
<a href="#613" id="613">613</a>
|
||
<a href="#614" id="614">614</a>
|
||
<a href="#615" id="615">615</a>
|
||
<a href="#616" id="616">616</a>
|
||
<a href="#617" id="617">617</a>
|
||
</pre><pre class="rust"><code><span class="kw">use </span>std::{
|
||
cmp::{min, Ordering},
|
||
fmt::Debug,
|
||
mem,
|
||
};
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const </span>B: usize = <span class="number">16</span>;
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">type </span>SequenceTree<T> = SequenceTreeInternal<T>;
|
||
|
||
<span class="attr">#[derive(Clone, Debug)]
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>SequenceTreeInternal<T> {
|
||
root_node: <span class="prelude-ty">Option</span><SequenceTreeNode<T>>,
|
||
}
|
||
|
||
<span class="attr">#[derive(Clone, Debug, PartialEq)]
|
||
</span><span class="kw">struct </span>SequenceTreeNode<T> {
|
||
elements: Vec<T>,
|
||
children: Vec<SequenceTreeNode<T>>,
|
||
length: usize,
|
||
}
|
||
|
||
<span class="kw">impl</span><T> SequenceTreeInternal<T>
|
||
<span class="kw">where
|
||
</span>T: Clone + Debug,
|
||
{
|
||
<span class="doccomment">/// Construct a new, empty, sequence.
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new() -> <span class="self">Self </span>{
|
||
<span class="self">Self </span>{ root_node: <span class="prelude-val">None </span>}
|
||
}
|
||
|
||
<span class="doccomment">/// Get the length of the sequence.
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
||
<span class="self">self</span>.root_node.as_ref().map_or(<span class="number">0</span>, |n| n.len())
|
||
}
|
||
|
||
<span class="doccomment">/// Create an iterator through the sequence.
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> Iter<<span class="lifetime">'_</span>, T> {
|
||
Iter {
|
||
inner: <span class="self">self</span>,
|
||
index: <span class="number">0</span>,
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Insert the `element` into the sequence at `index`.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if `index > len`.
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>insert(<span class="kw-2">&mut </span><span class="self">self</span>, index: usize, element: T) {
|
||
<span class="kw">let </span>old_len = <span class="self">self</span>.len();
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(root) = <span class="self">self</span>.root_node.as_mut() {
|
||
<span class="attr">#[cfg(debug_assertions)]
|
||
</span>root.check();
|
||
|
||
<span class="kw">if </span>root.is_full() {
|
||
<span class="kw">let </span>original_len = root.len();
|
||
<span class="kw">let </span>new_root = SequenceTreeNode::new();
|
||
|
||
<span class="comment">// move new_root to root position
|
||
</span><span class="kw">let </span>old_root = mem::replace(root, new_root);
|
||
|
||
root.length += old_root.len();
|
||
root.children.push(old_root);
|
||
root.split_child(<span class="number">0</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(original_len, root.len());
|
||
|
||
<span class="comment">// after splitting the root has one element and two children, find which child the
|
||
// index is in
|
||
</span><span class="kw">let </span>first_child_len = root.children[<span class="number">0</span>].len();
|
||
<span class="kw">let </span>(child, insertion_index) = <span class="kw">if </span>first_child_len < index {
|
||
(<span class="kw-2">&mut </span>root.children[<span class="number">1</span>], index - (first_child_len + <span class="number">1</span>))
|
||
} <span class="kw">else </span>{
|
||
(<span class="kw-2">&mut </span>root.children[<span class="number">0</span>], index)
|
||
};
|
||
root.length += <span class="number">1</span>;
|
||
child.insert_into_non_full_node(insertion_index, element)
|
||
} <span class="kw">else </span>{
|
||
root.insert_into_non_full_node(index, element)
|
||
}
|
||
} <span class="kw">else </span>{
|
||
<span class="self">self</span>.root_node = <span class="prelude-val">Some</span>(SequenceTreeNode {
|
||
elements: <span class="macro">vec!</span>[element],
|
||
children: Vec::new(),
|
||
length: <span class="number">1</span>,
|
||
})
|
||
}
|
||
<span class="macro">assert_eq!</span>(<span class="self">self</span>.len(), old_len + <span class="number">1</span>, <span class="string">"{:#?}"</span>, <span class="self">self</span>);
|
||
}
|
||
|
||
<span class="doccomment">/// Push the `element` onto the back of the sequence.
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>push(<span class="kw-2">&mut </span><span class="self">self</span>, element: T) {
|
||
<span class="kw">let </span>l = <span class="self">self</span>.len();
|
||
<span class="self">self</span>.insert(l, element)
|
||
}
|
||
|
||
<span class="doccomment">/// Get the `element` at `index` in the sequence.
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, index: usize) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>T> {
|
||
<span class="self">self</span>.root_node.as_ref().and_then(|n| n.get(index))
|
||
}
|
||
|
||
<span class="doccomment">/// Removes the element at `index` from the sequence.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if `index` is out of bounds.
|
||
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>remove(<span class="kw-2">&mut </span><span class="self">self</span>, index: usize) -> T {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(root) = <span class="self">self</span>.root_node.as_mut() {
|
||
<span class="attr">#[cfg(debug_assertions)]
|
||
</span><span class="kw">let </span>len = root.check();
|
||
<span class="kw">let </span>old = root.remove(index);
|
||
|
||
<span class="kw">if </span>root.elements.is_empty() {
|
||
<span class="kw">if </span>root.is_leaf() {
|
||
<span class="self">self</span>.root_node = <span class="prelude-val">None</span>;
|
||
} <span class="kw">else </span>{
|
||
<span class="self">self</span>.root_node = <span class="prelude-val">Some</span>(root.children.remove(<span class="number">0</span>));
|
||
}
|
||
}
|
||
|
||
<span class="attr">#[cfg(debug_assertions)]
|
||
</span><span class="macro">debug_assert_eq!</span>(len, <span class="self">self</span>.root_node.as_ref().map_or(<span class="number">0</span>, |r| r.check()) + <span class="number">1</span>);
|
||
old
|
||
} <span class="kw">else </span>{
|
||
<span class="macro">panic!</span>(<span class="string">"remove from empty tree"</span>)
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><T> SequenceTreeNode<T>
|
||
<span class="kw">where
|
||
</span>T: Clone + Debug,
|
||
{
|
||
<span class="kw">fn </span>new() -> <span class="self">Self </span>{
|
||
<span class="self">Self </span>{
|
||
elements: Vec::new(),
|
||
children: Vec::new(),
|
||
length: <span class="number">0</span>,
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
||
<span class="self">self</span>.length
|
||
}
|
||
|
||
<span class="kw">fn </span>is_leaf(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
|
||
<span class="self">self</span>.children.is_empty()
|
||
}
|
||
|
||
<span class="kw">fn </span>is_full(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
|
||
<span class="self">self</span>.elements.len() >= <span class="number">2 </span>* B - <span class="number">1
|
||
</span>}
|
||
|
||
<span class="doccomment">/// Returns the child index and the given index adjusted for the cumulative index before that
|
||
/// child.
|
||
</span><span class="kw">fn </span>find_child_index(<span class="kw-2">&</span><span class="self">self</span>, index: usize) -> (usize, usize) {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>cumulative_len = <span class="number">0</span>;
|
||
<span class="kw">for </span>(child_index, child) <span class="kw">in </span><span class="self">self</span>.children.iter().enumerate() {
|
||
<span class="kw">if </span>cumulative_len + child.len() >= index {
|
||
<span class="kw">return </span>(child_index, index - cumulative_len);
|
||
} <span class="kw">else </span>{
|
||
cumulative_len += child.len() + <span class="number">1</span>;
|
||
}
|
||
}
|
||
<span class="macro">panic!</span>(<span class="string">"index not found in node"</span>)
|
||
}
|
||
|
||
<span class="kw">fn </span>insert_into_non_full_node(<span class="kw-2">&mut </span><span class="self">self</span>, index: usize, element: T) {
|
||
<span class="macro">assert!</span>(!<span class="self">self</span>.is_full());
|
||
<span class="kw">if </span><span class="self">self</span>.is_leaf() {
|
||
<span class="self">self</span>.length += <span class="number">1</span>;
|
||
<span class="self">self</span>.elements.insert(index, element);
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">let </span>(child_index, sub_index) = <span class="self">self</span>.find_child_index(index);
|
||
<span class="kw">let </span>child = <span class="kw-2">&mut </span><span class="self">self</span>.children[child_index];
|
||
|
||
<span class="kw">if </span>child.is_full() {
|
||
<span class="self">self</span>.split_child(child_index);
|
||
|
||
<span class="comment">// child structure has changed so we need to find the index again
|
||
</span><span class="kw">let </span>(child_index, sub_index) = <span class="self">self</span>.find_child_index(index);
|
||
<span class="kw">let </span>child = <span class="kw-2">&mut </span><span class="self">self</span>.children[child_index];
|
||
child.insert_into_non_full_node(sub_index, element);
|
||
} <span class="kw">else </span>{
|
||
child.insert_into_non_full_node(sub_index, element);
|
||
}
|
||
<span class="self">self</span>.length += <span class="number">1</span>;
|
||
}
|
||
}
|
||
|
||
<span class="comment">// A utility function to split the child `full_child_index` of this node
|
||
// Note that `full_child_index` must be full when this function is called.
|
||
</span><span class="kw">fn </span>split_child(<span class="kw-2">&mut </span><span class="self">self</span>, full_child_index: usize) {
|
||
<span class="kw">let </span>original_len_self = <span class="self">self</span>.len();
|
||
|
||
<span class="comment">// Create a new node which is going to store (B-1) keys
|
||
// of the full child.
|
||
</span><span class="kw">let </span><span class="kw-2">mut </span>successor_sibling = SequenceTreeNode::new();
|
||
|
||
<span class="kw">let </span>full_child = <span class="kw-2">&mut </span><span class="self">self</span>.children[full_child_index];
|
||
<span class="kw">let </span>original_len = full_child.len();
|
||
<span class="macro">assert!</span>(full_child.is_full());
|
||
|
||
successor_sibling.elements = full_child.elements.split_off(B);
|
||
|
||
<span class="kw">if </span>!full_child.is_leaf() {
|
||
successor_sibling.children = full_child.children.split_off(B);
|
||
}
|
||
|
||
<span class="kw">let </span>middle = full_child.elements.pop().unwrap();
|
||
|
||
full_child.length =
|
||
full_child.elements.len() + full_child.children.iter().map(|c| c.len()).sum::<usize>();
|
||
|
||
successor_sibling.length = successor_sibling.elements.len()
|
||
+ successor_sibling
|
||
.children
|
||
.iter()
|
||
.map(|c| c.len())
|
||
.sum::<usize>();
|
||
|
||
<span class="kw">let </span>z_len = successor_sibling.len();
|
||
|
||
<span class="kw">let </span>full_child_len = full_child.len();
|
||
|
||
<span class="self">self</span>.children
|
||
.insert(full_child_index + <span class="number">1</span>, successor_sibling);
|
||
|
||
<span class="self">self</span>.elements.insert(full_child_index, middle);
|
||
|
||
<span class="macro">assert_eq!</span>(full_child_len + z_len + <span class="number">1</span>, original_len, <span class="string">"{:#?}"</span>, <span class="self">self</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(original_len_self, <span class="self">self</span>.len());
|
||
}
|
||
|
||
<span class="kw">fn </span>remove_from_leaf(<span class="kw-2">&mut </span><span class="self">self</span>, index: usize) -> T {
|
||
<span class="self">self</span>.length -= <span class="number">1</span>;
|
||
<span class="self">self</span>.elements.remove(index)
|
||
}
|
||
|
||
<span class="kw">fn </span>remove_element_from_non_leaf(<span class="kw-2">&mut </span><span class="self">self</span>, index: usize, element_index: usize) -> T {
|
||
<span class="self">self</span>.length -= <span class="number">1</span>;
|
||
<span class="kw">if </span><span class="self">self</span>.children[element_index].elements.len() >= B {
|
||
<span class="kw">let </span>total_index = <span class="self">self</span>.cumulative_index(element_index);
|
||
<span class="comment">// recursively delete index - 1 in predecessor_node
|
||
</span><span class="kw">let </span>predecessor = <span class="self">self</span>.children[element_index].remove(index - <span class="number">1 </span>- total_index);
|
||
<span class="comment">// replace element with that one
|
||
</span>mem::replace(<span class="kw-2">&mut </span><span class="self">self</span>.elements[element_index], predecessor)
|
||
} <span class="kw">else if </span><span class="self">self</span>.children[element_index + <span class="number">1</span>].elements.len() >= B {
|
||
<span class="comment">// recursively delete index + 1 in successor_node
|
||
</span><span class="kw">let </span>total_index = <span class="self">self</span>.cumulative_index(element_index + <span class="number">1</span>);
|
||
<span class="kw">let </span>successor = <span class="self">self</span>.children[element_index + <span class="number">1</span>].remove(index + <span class="number">1 </span>- total_index);
|
||
<span class="comment">// replace element with that one
|
||
</span>mem::replace(<span class="kw-2">&mut </span><span class="self">self</span>.elements[element_index], successor)
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">let </span>middle_element = <span class="self">self</span>.elements.remove(element_index);
|
||
<span class="kw">let </span>successor_child = <span class="self">self</span>.children.remove(element_index + <span class="number">1</span>);
|
||
<span class="self">self</span>.children[element_index].merge(middle_element, successor_child);
|
||
|
||
<span class="kw">let </span>total_index = <span class="self">self</span>.cumulative_index(element_index);
|
||
<span class="self">self</span>.children[element_index].remove(index - total_index)
|
||
}
|
||
}
|
||
|
||
<span class="kw">fn </span>cumulative_index(<span class="kw-2">&</span><span class="self">self</span>, child_index: usize) -> usize {
|
||
<span class="self">self</span>.children[<span class="number">0</span>..child_index]
|
||
.iter()
|
||
.map(|c| c.len() + <span class="number">1</span>)
|
||
.sum()
|
||
}
|
||
|
||
<span class="kw">fn </span>remove_from_internal_child(<span class="kw-2">&mut </span><span class="self">self</span>, index: usize, <span class="kw-2">mut </span>child_index: usize) -> T {
|
||
<span class="kw">if </span><span class="self">self</span>.children[child_index].elements.len() < B
|
||
&& <span class="kw">if </span>child_index > <span class="number">0 </span>{
|
||
<span class="self">self</span>.children[child_index - <span class="number">1</span>].elements.len() < B
|
||
} <span class="kw">else </span>{
|
||
<span class="bool-val">true
|
||
</span>}
|
||
&& <span class="kw">if </span>child_index + <span class="number">1 </span>< <span class="self">self</span>.children.len() {
|
||
<span class="self">self</span>.children[child_index + <span class="number">1</span>].elements.len() < B
|
||
} <span class="kw">else </span>{
|
||
<span class="bool-val">true
|
||
</span>}
|
||
{
|
||
<span class="comment">// if the child and its immediate siblings have B-1 elements merge the child
|
||
// with one sibling, moving an element from this node into the new merged node
|
||
// to be the median
|
||
|
||
</span><span class="kw">if </span>child_index > <span class="number">0 </span>{
|
||
<span class="kw">let </span>middle = <span class="self">self</span>.elements.remove(child_index - <span class="number">1</span>);
|
||
|
||
<span class="comment">// use the predessor sibling
|
||
</span><span class="kw">let </span>successor = <span class="self">self</span>.children.remove(child_index);
|
||
child_index -= <span class="number">1</span>;
|
||
|
||
<span class="self">self</span>.children[child_index].merge(middle, successor);
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">let </span>middle = <span class="self">self</span>.elements.remove(child_index);
|
||
|
||
<span class="comment">// use the sucessor sibling
|
||
</span><span class="kw">let </span>successor = <span class="self">self</span>.children.remove(child_index + <span class="number">1</span>);
|
||
|
||
<span class="self">self</span>.children[child_index].merge(middle, successor);
|
||
}
|
||
} <span class="kw">else if </span><span class="self">self</span>.children[child_index].elements.len() < B {
|
||
<span class="kw">if </span>child_index > <span class="number">0
|
||
</span>&& <span class="self">self
|
||
</span>.children
|
||
.get(child_index - <span class="number">1</span>)
|
||
.map_or(<span class="bool-val">false</span>, |c| c.elements.len() >= B)
|
||
{
|
||
<span class="kw">let </span>last_element = <span class="self">self</span>.children[child_index - <span class="number">1</span>].elements.pop().unwrap();
|
||
<span class="macro">assert!</span>(!<span class="self">self</span>.children[child_index - <span class="number">1</span>].elements.is_empty());
|
||
<span class="self">self</span>.children[child_index - <span class="number">1</span>].length -= <span class="number">1</span>;
|
||
|
||
<span class="kw">let </span>parent_element =
|
||
mem::replace(<span class="kw-2">&mut </span><span class="self">self</span>.elements[child_index - <span class="number">1</span>], last_element);
|
||
|
||
<span class="self">self</span>.children[child_index]
|
||
.elements
|
||
.insert(<span class="number">0</span>, parent_element);
|
||
<span class="self">self</span>.children[child_index].length += <span class="number">1</span>;
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(last_child) = <span class="self">self</span>.children[child_index - <span class="number">1</span>].children.pop() {
|
||
<span class="self">self</span>.children[child_index - <span class="number">1</span>].length -= last_child.len();
|
||
<span class="self">self</span>.children[child_index].length += last_child.len();
|
||
<span class="self">self</span>.children[child_index].children.insert(<span class="number">0</span>, last_child);
|
||
}
|
||
} <span class="kw">else if </span><span class="self">self
|
||
</span>.children
|
||
.get(child_index + <span class="number">1</span>)
|
||
.map_or(<span class="bool-val">false</span>, |c| c.elements.len() >= B)
|
||
{
|
||
<span class="kw">let </span>first_element = <span class="self">self</span>.children[child_index + <span class="number">1</span>].elements.remove(<span class="number">0</span>);
|
||
<span class="self">self</span>.children[child_index + <span class="number">1</span>].length -= <span class="number">1</span>;
|
||
|
||
<span class="macro">assert!</span>(!<span class="self">self</span>.children[child_index + <span class="number">1</span>].elements.is_empty());
|
||
|
||
<span class="kw">let </span>parent_element = mem::replace(<span class="kw-2">&mut </span><span class="self">self</span>.elements[child_index], first_element);
|
||
|
||
<span class="self">self</span>.children[child_index].length += <span class="number">1</span>;
|
||
<span class="self">self</span>.children[child_index].elements.push(parent_element);
|
||
|
||
<span class="kw">if </span>!<span class="self">self</span>.children[child_index + <span class="number">1</span>].is_leaf() {
|
||
<span class="kw">let </span>first_child = <span class="self">self</span>.children[child_index + <span class="number">1</span>].children.remove(<span class="number">0</span>);
|
||
<span class="self">self</span>.children[child_index + <span class="number">1</span>].length -= first_child.len();
|
||
<span class="self">self</span>.children[child_index].length += first_child.len();
|
||
|
||
<span class="self">self</span>.children[child_index].children.push(first_child);
|
||
}
|
||
}
|
||
}
|
||
<span class="self">self</span>.length -= <span class="number">1</span>;
|
||
<span class="kw">let </span>total_index = <span class="self">self</span>.cumulative_index(child_index);
|
||
<span class="self">self</span>.children[child_index].remove(index - total_index)
|
||
}
|
||
|
||
<span class="kw">fn </span>check(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
||
<span class="kw">let </span>l = <span class="self">self</span>.elements.len() + <span class="self">self</span>.children.iter().map(|c| c.check()).sum::<usize>();
|
||
<span class="macro">assert_eq!</span>(<span class="self">self</span>.len(), l, <span class="string">"{:#?}"</span>, <span class="self">self</span>);
|
||
|
||
l
|
||
}
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>remove(<span class="kw-2">&mut </span><span class="self">self</span>, index: usize) -> T {
|
||
<span class="kw">let </span>original_len = <span class="self">self</span>.len();
|
||
<span class="kw">if </span><span class="self">self</span>.is_leaf() {
|
||
<span class="kw">let </span>v = <span class="self">self</span>.remove_from_leaf(index);
|
||
<span class="macro">assert_eq!</span>(original_len, <span class="self">self</span>.len() + <span class="number">1</span>);
|
||
<span class="macro">debug_assert_eq!</span>(<span class="self">self</span>.check(), <span class="self">self</span>.len());
|
||
v
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>total_index = <span class="number">0</span>;
|
||
<span class="kw">for </span>(child_index, child) <span class="kw">in </span><span class="self">self</span>.children.iter().enumerate() {
|
||
<span class="kw">match </span>(total_index + child.len()).cmp(<span class="kw-2">&</span>index) {
|
||
Ordering::Less => {
|
||
<span class="comment">// should be later on in the loop
|
||
</span>total_index += child.len() + <span class="number">1</span>;
|
||
<span class="kw">continue</span>;
|
||
}
|
||
Ordering::Equal => {
|
||
<span class="kw">let </span>v = <span class="self">self</span>.remove_element_from_non_leaf(
|
||
index,
|
||
min(child_index, <span class="self">self</span>.elements.len() - <span class="number">1</span>),
|
||
);
|
||
<span class="macro">assert_eq!</span>(original_len, <span class="self">self</span>.len() + <span class="number">1</span>);
|
||
<span class="macro">debug_assert_eq!</span>(<span class="self">self</span>.check(), <span class="self">self</span>.len());
|
||
<span class="kw">return </span>v;
|
||
}
|
||
Ordering::Greater => {
|
||
<span class="kw">let </span>v = <span class="self">self</span>.remove_from_internal_child(index, child_index);
|
||
<span class="macro">assert_eq!</span>(original_len, <span class="self">self</span>.len() + <span class="number">1</span>);
|
||
<span class="macro">debug_assert_eq!</span>(<span class="self">self</span>.check(), <span class="self">self</span>.len());
|
||
<span class="kw">return </span>v;
|
||
}
|
||
}
|
||
}
|
||
<span class="macro">panic!</span>(
|
||
<span class="string">"index not found to remove {} {} {} {}"</span>,
|
||
index,
|
||
total_index,
|
||
<span class="self">self</span>.len(),
|
||
<span class="self">self</span>.check()
|
||
);
|
||
}
|
||
}
|
||
|
||
<span class="kw">fn </span>merge(<span class="kw-2">&mut </span><span class="self">self</span>, middle: T, successor_sibling: SequenceTreeNode<T>) {
|
||
<span class="self">self</span>.elements.push(middle);
|
||
<span class="self">self</span>.elements.extend(successor_sibling.elements);
|
||
<span class="self">self</span>.children.extend(successor_sibling.children);
|
||
<span class="self">self</span>.length += successor_sibling.length + <span class="number">1</span>;
|
||
<span class="macro">assert!</span>(<span class="self">self</span>.is_full());
|
||
}
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, index: usize) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>T> {
|
||
<span class="kw">if </span><span class="self">self</span>.is_leaf() {
|
||
<span class="kw">return </span><span class="self">self</span>.elements.get(index);
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>cumulative_len = <span class="number">0</span>;
|
||
<span class="kw">for </span>(child_index, child) <span class="kw">in </span><span class="self">self</span>.children.iter().enumerate() {
|
||
<span class="kw">match </span>(cumulative_len + child.len()).cmp(<span class="kw-2">&</span>index) {
|
||
Ordering::Less => {
|
||
cumulative_len += child.len() + <span class="number">1</span>;
|
||
}
|
||
Ordering::Equal => <span class="kw">return </span><span class="self">self</span>.elements.get(child_index),
|
||
Ordering::Greater => {
|
||
<span class="kw">return </span>child.get(index - cumulative_len);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
<span class="prelude-val">None
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">impl</span><T> Default <span class="kw">for </span>SequenceTreeInternal<T>
|
||
<span class="kw">where
|
||
</span>T: Clone + Debug,
|
||
{
|
||
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
|
||
<span class="self">Self</span>::new()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><T> PartialEq <span class="kw">for </span>SequenceTreeInternal<T>
|
||
<span class="kw">where
|
||
</span>T: Clone + Debug + PartialEq,
|
||
{
|
||
<span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span><span class="self">Self</span>) -> bool {
|
||
<span class="self">self</span>.len() == other.len() && <span class="self">self</span>.iter().zip(other.iter()).all(|(a, b)| a == b)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, T> IntoIterator <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>SequenceTreeInternal<T>
|
||
<span class="kw">where
|
||
</span>T: Clone + Debug,
|
||
{
|
||
<span class="kw">type </span>Item = <span class="kw-2">&</span><span class="lifetime">'a </span>T;
|
||
|
||
<span class="kw">type </span>IntoIter = Iter<<span class="lifetime">'a</span>, T>;
|
||
|
||
<span class="kw">fn </span>into_iter(<span class="self">self</span>) -> <span class="self">Self</span>::IntoIter {
|
||
Iter {
|
||
inner: <span class="self">self</span>,
|
||
index: <span class="number">0</span>,
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="attr">#[derive(Debug)]
|
||
</span><span class="kw">pub struct </span>Iter<<span class="lifetime">'a</span>, T> {
|
||
inner: <span class="kw-2">&</span><span class="lifetime">'a </span>SequenceTreeInternal<T>,
|
||
index: usize,
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, T> Iterator <span class="kw">for </span>Iter<<span class="lifetime">'a</span>, T>
|
||
<span class="kw">where
|
||
</span>T: Clone + Debug,
|
||
{
|
||
<span class="kw">type </span>Item = <span class="kw-2">&</span><span class="lifetime">'a </span>T;
|
||
|
||
<span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> {
|
||
<span class="self">self</span>.index += <span class="number">1</span>;
|
||
<span class="self">self</span>.inner.get(<span class="self">self</span>.index - <span class="number">1</span>)
|
||
}
|
||
|
||
<span class="kw">fn </span>nth(<span class="kw-2">&mut </span><span class="self">self</span>, n: usize) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> {
|
||
<span class="self">self</span>.index += n + <span class="number">1</span>;
|
||
<span class="self">self</span>.inner.get(<span class="self">self</span>.index - <span class="number">1</span>)
|
||
}
|
||
}
|
||
|
||
<span class="attr">#[cfg(test)]
|
||
</span><span class="kw">mod </span>tests {
|
||
<span class="kw">use </span>proptest::prelude::<span class="kw-2">*</span>;
|
||
|
||
<span class="kw">use super</span>::<span class="kw-2">*</span>;
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>push_back() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>t = SequenceTree::new();
|
||
|
||
t.push(<span class="number">1</span>);
|
||
t.push(<span class="number">2</span>);
|
||
t.push(<span class="number">3</span>);
|
||
t.push(<span class="number">4</span>);
|
||
t.push(<span class="number">5</span>);
|
||
t.push(<span class="number">6</span>);
|
||
t.push(<span class="number">8</span>);
|
||
t.push(<span class="number">100</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>insert() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>t = SequenceTree::new();
|
||
|
||
t.insert(<span class="number">0</span>, <span class="number">1</span>);
|
||
t.insert(<span class="number">1</span>, <span class="number">1</span>);
|
||
t.insert(<span class="number">0</span>, <span class="number">1</span>);
|
||
t.insert(<span class="number">0</span>, <span class="number">1</span>);
|
||
t.insert(<span class="number">0</span>, <span class="number">1</span>);
|
||
t.insert(<span class="number">3</span>, <span class="number">1</span>);
|
||
t.insert(<span class="number">4</span>, <span class="number">1</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>insert_book() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>t = SequenceTree::new();
|
||
|
||
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="number">100 </span>{
|
||
t.insert(i % <span class="number">2</span>, ());
|
||
}
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>insert_book_vec() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>t = SequenceTree::new();
|
||
<span class="kw">let </span><span class="kw-2">mut </span>v = Vec::new();
|
||
|
||
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="number">100 </span>{
|
||
t.insert(i % <span class="number">3</span>, ());
|
||
v.insert(i % <span class="number">3</span>, ());
|
||
|
||
<span class="macro">assert_eq!</span>(v, t.iter().copied().collect::<Vec<<span class="kw">_</span>>>())
|
||
}
|
||
}
|
||
|
||
<span class="kw">fn </span>arb_indices() -> <span class="kw">impl </span>Strategy<Value = Vec<usize>> {
|
||
proptest::collection::vec(any::<usize>(), <span class="number">0</span>..<span class="number">1000</span>).prop_map(|v| {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>len = <span class="number">0</span>;
|
||
v.into_iter()
|
||
.map(|i| {
|
||
len += <span class="number">1</span>;
|
||
i % len
|
||
})
|
||
.collect::<Vec<<span class="kw">_</span>>>()
|
||
})
|
||
}
|
||
|
||
<span class="macro">proptest! </span>{
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>proptest_insert(indices <span class="kw">in </span>arb_indices()) {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>t = SequenceTreeInternal::<usize>::new();
|
||
<span class="kw">let </span><span class="kw-2">mut </span>v = Vec::new();
|
||
|
||
<span class="kw">for </span>i <span class="kw">in </span>indices{
|
||
<span class="kw">if </span>i <= v.len() {
|
||
t.insert(i % <span class="number">3</span>, i);
|
||
v.insert(i % <span class="number">3</span>, i);
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">return </span><span class="prelude-val">Err</span>(proptest::test_runner::TestCaseError::reject(<span class="string">"index out of bounds"</span>))
|
||
}
|
||
|
||
<span class="macro">assert_eq!</span>(v, t.iter().copied().collect::<Vec<<span class="kw">_</span>>>())
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
<span class="macro">proptest! </span>{
|
||
|
||
<span class="comment">// This is a really slow test due to all the copying of the Vecs (i.e. not due to the
|
||
// sequencetree) so we only do a few runs
|
||
</span><span class="attr">#![proptest_config(ProptestConfig::with_cases(<span class="number">20</span>))]
|
||
#[test]
|
||
</span><span class="kw">fn </span>proptest_remove(inserts <span class="kw">in </span>arb_indices(), removes <span class="kw">in </span>arb_indices()) {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>t = SequenceTreeInternal::<usize>::new();
|
||
<span class="kw">let </span><span class="kw-2">mut </span>v = Vec::new();
|
||
|
||
<span class="kw">for </span>i <span class="kw">in </span>inserts {
|
||
<span class="kw">if </span>i <= v.len() {
|
||
t.insert(i , i);
|
||
v.insert(i , i);
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">return </span><span class="prelude-val">Err</span>(proptest::test_runner::TestCaseError::reject(<span class="string">"index out of bounds"</span>))
|
||
}
|
||
|
||
<span class="macro">assert_eq!</span>(v, t.iter().copied().collect::<Vec<<span class="kw">_</span>>>())
|
||
}
|
||
|
||
<span class="kw">for </span>i <span class="kw">in </span>removes {
|
||
<span class="kw">if </span>i < v.len() {
|
||
<span class="kw">let </span>tr = t.remove(i);
|
||
<span class="kw">let </span>vr = v.remove(i);
|
||
<span class="macro">assert_eq!</span>(tr, vr);
|
||
} <span class="kw">else </span>{
|
||
<span class="kw">return </span><span class="prelude-val">Err</span>(proptest::test_runner::TestCaseError::reject(<span class="string">"index out of bounds"</span>))
|
||
}
|
||
|
||
<span class="macro">assert_eq!</span>(v, t.iter().copied().collect::<Vec<<span class="kw">_</span>>>())
|
||
}
|
||
}
|
||
|
||
}
|
||
}
|
||
</code></pre></div>
|
||
</section></main><div id="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="automerge_wasm" data-themes="" data-resource-suffix="" data-rustdoc-version="1.68.0 (2c8cc3432 2023-03-06)" data-search-js="search-98d53477a794af0b.js" data-settings-js="settings-c3c521c753752a1a.js" data-settings-css="settings-08ddfdda51b8ee2e.css" ></div></body></html> |