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||
<a href="#312" id="312">312</a>
|
||
<a href="#313" id="313">313</a>
|
||
<a href="#314" id="314">314</a>
|
||
<a href="#315" id="315">315</a>
|
||
<a href="#316" id="316">316</a>
|
||
<a href="#317" id="317">317</a>
|
||
<a href="#318" id="318">318</a>
|
||
<a href="#319" id="319">319</a>
|
||
<a href="#320" id="320">320</a>
|
||
<a href="#321" id="321">321</a>
|
||
<a href="#322" id="322">322</a>
|
||
<a href="#323" id="323">323</a>
|
||
<a href="#324" id="324">324</a>
|
||
<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>
|
||
<a href="#618" id="618">618</a>
|
||
<a href="#619" id="619">619</a>
|
||
<a href="#620" id="620">620</a>
|
||
<a href="#621" id="621">621</a>
|
||
<a href="#622" id="622">622</a>
|
||
<a href="#623" id="623">623</a>
|
||
<a href="#624" id="624">624</a>
|
||
<a href="#625" id="625">625</a>
|
||
<a href="#626" id="626">626</a>
|
||
<a href="#627" id="627">627</a>
|
||
<a href="#628" id="628">628</a>
|
||
<a href="#629" id="629">629</a>
|
||
<a href="#630" id="630">630</a>
|
||
<a href="#631" id="631">631</a>
|
||
<a href="#632" id="632">632</a>
|
||
<a href="#633" id="633">633</a>
|
||
<a href="#634" id="634">634</a>
|
||
<a href="#635" id="635">635</a>
|
||
<a href="#636" id="636">636</a>
|
||
<a href="#637" id="637">637</a>
|
||
<a href="#638" id="638">638</a>
|
||
<a href="#639" id="639">639</a>
|
||
<a href="#640" id="640">640</a>
|
||
<a href="#641" id="641">641</a>
|
||
<a href="#642" id="642">642</a>
|
||
<a href="#643" id="643">643</a>
|
||
<a href="#644" id="644">644</a>
|
||
<a href="#645" id="645">645</a>
|
||
<a href="#646" id="646">646</a>
|
||
<a href="#647" id="647">647</a>
|
||
<a href="#648" id="648">648</a>
|
||
<a href="#649" id="649">649</a>
|
||
<a href="#650" id="650">650</a>
|
||
<a href="#651" id="651">651</a>
|
||
<a href="#652" id="652">652</a>
|
||
<a href="#653" id="653">653</a>
|
||
<a href="#654" id="654">654</a>
|
||
<a href="#655" id="655">655</a>
|
||
<a href="#656" id="656">656</a>
|
||
<a href="#657" id="657">657</a>
|
||
<a href="#658" id="658">658</a>
|
||
<a href="#659" id="659">659</a>
|
||
<a href="#660" id="660">660</a>
|
||
<a href="#661" id="661">661</a>
|
||
<a href="#662" id="662">662</a>
|
||
<a href="#663" id="663">663</a>
|
||
<a href="#664" id="664">664</a>
|
||
<a href="#665" id="665">665</a>
|
||
<a href="#666" id="666">666</a>
|
||
<a href="#667" id="667">667</a>
|
||
<a href="#668" id="668">668</a>
|
||
<a href="#669" id="669">669</a>
|
||
<a href="#670" id="670">670</a>
|
||
<a href="#671" id="671">671</a>
|
||
<a href="#672" id="672">672</a>
|
||
<a href="#673" id="673">673</a>
|
||
<a href="#674" id="674">674</a>
|
||
<a href="#675" id="675">675</a>
|
||
<a href="#676" id="676">676</a>
|
||
<a href="#677" id="677">677</a>
|
||
<a href="#678" id="678">678</a>
|
||
<a href="#679" id="679">679</a>
|
||
<a href="#680" id="680">680</a>
|
||
<a href="#681" id="681">681</a>
|
||
<a href="#682" id="682">682</a>
|
||
<a href="#683" id="683">683</a>
|
||
<a href="#684" id="684">684</a>
|
||
<a href="#685" id="685">685</a>
|
||
<a href="#686" id="686">686</a>
|
||
<a href="#687" id="687">687</a>
|
||
<a href="#688" id="688">688</a>
|
||
<a href="#689" id="689">689</a>
|
||
<a href="#690" id="690">690</a>
|
||
<a href="#691" id="691">691</a>
|
||
<a href="#692" id="692">692</a>
|
||
<a href="#693" id="693">693</a>
|
||
<a href="#694" id="694">694</a>
|
||
<a href="#695" id="695">695</a>
|
||
<a href="#696" id="696">696</a>
|
||
<a href="#697" id="697">697</a>
|
||
<a href="#698" id="698">698</a>
|
||
<a href="#699" id="699">699</a>
|
||
<a href="#700" id="700">700</a>
|
||
<a href="#701" id="701">701</a>
|
||
<a href="#702" id="702">702</a>
|
||
<a href="#703" id="703">703</a>
|
||
<a href="#704" id="704">704</a>
|
||
<a href="#705" id="705">705</a>
|
||
<a href="#706" id="706">706</a>
|
||
<a href="#707" id="707">707</a>
|
||
<a href="#708" id="708">708</a>
|
||
<a href="#709" id="709">709</a>
|
||
<a href="#710" id="710">710</a>
|
||
<a href="#711" id="711">711</a>
|
||
<a href="#712" id="712">712</a>
|
||
<a href="#713" id="713">713</a>
|
||
<a href="#714" id="714">714</a>
|
||
<a href="#715" id="715">715</a>
|
||
<a href="#716" id="716">716</a>
|
||
<a href="#717" id="717">717</a>
|
||
<a href="#718" id="718">718</a>
|
||
<a href="#719" id="719">719</a>
|
||
<a href="#720" id="720">720</a>
|
||
</pre></div><pre class="rust"><code><span class="kw">use </span>core::{cmp::Ordering, fmt, fmt::Write, hash, iter, ops, str};
|
||
|
||
<span class="kw">use </span>hash32;
|
||
|
||
<span class="kw">use </span><span class="kw">crate</span>::Vec;
|
||
|
||
<span class="doccomment">/// A fixed capacity [`String`](https://doc.rust-lang.org/std/string/struct.String.html)
|
||
</span><span class="kw">pub struct </span>String<<span class="kw">const </span>N: usize> {
|
||
vec: Vec<u8, N>,
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> String<N> {
|
||
<span class="doccomment">/// Constructs a new, empty `String` with a fixed capacity of `N` bytes
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// // allocate the string on the stack
|
||
/// let mut s: String<4> = String::new();
|
||
///
|
||
/// // allocate the string in a static variable
|
||
/// static mut S: String<4> = String::new();
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub const fn </span>new() -> <span class="self">Self </span>{
|
||
<span class="self">Self </span>{ vec: Vec::new() }
|
||
}
|
||
|
||
<span class="doccomment">/// Converts a `String` into a byte vector.
|
||
///
|
||
/// This consumes the `String`, so we do not need to copy its contents.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let s: String<4> = String::from("ab");
|
||
/// let b = s.into_bytes();
|
||
/// assert!(b.len() == 2);
|
||
///
|
||
/// assert_eq!(&['a' as u8, 'b' as u8], &b[..]);
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>into_bytes(<span class="self">self</span>) -> Vec<u8, N> {
|
||
<span class="self">self</span>.vec
|
||
}
|
||
|
||
<span class="doccomment">/// Extracts a string slice containing the entire string.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<4> = String::from("ab");
|
||
/// assert!(s.as_str() == "ab");
|
||
///
|
||
/// let _s = s.as_str();
|
||
/// // s.push('c'); // <- cannot borrow `s` as mutable because it is also borrowed as immutable
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str {
|
||
<span class="kw">unsafe </span>{ str::from_utf8_unchecked(<span class="self">self</span>.vec.as_slice()) }
|
||
}
|
||
|
||
<span class="doccomment">/// Converts a `String` into a mutable string slice.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<4> = String::from("ab");
|
||
/// let s = s.as_mut_str();
|
||
/// s.make_ascii_uppercase();
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>as_mut_str(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>str {
|
||
<span class="kw">unsafe </span>{ str::from_utf8_unchecked_mut(<span class="self">self</span>.vec.as_mut_slice()) }
|
||
}
|
||
|
||
<span class="doccomment">/// Returns a mutable reference to the contents of this `String`.
|
||
///
|
||
/// # Safety
|
||
///
|
||
/// This function is unsafe because it does not check that the bytes passed
|
||
/// to it are valid UTF-8. If this constraint is violated, it may cause
|
||
/// memory unsafety issues with future users of the `String`, as the rest of
|
||
/// the library assumes that `String`s are valid UTF-8.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// let mut s = String::from("hello");
|
||
///
|
||
/// unsafe {
|
||
/// let vec = s.as_mut_vec();
|
||
/// assert_eq!(&[104, 101, 108, 108, 111][..], &vec[..]);
|
||
///
|
||
/// vec.reverse();
|
||
/// }
|
||
/// assert_eq!(s, "olleh");
|
||
/// ```
|
||
</span><span class="kw">pub unsafe fn </span>as_mut_vec(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>Vec<u8, N> {
|
||
<span class="kw-2">&mut </span><span class="self">self</span>.vec
|
||
}
|
||
|
||
<span class="doccomment">/// Appends a given string slice onto the end of this `String`.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<8> = String::from("foo");
|
||
///
|
||
/// assert!(s.push_str("bar").is_ok());
|
||
///
|
||
/// assert_eq!("foobar", s);
|
||
///
|
||
/// assert!(s.push_str("tender").is_err());
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>push_str(<span class="kw-2">&mut </span><span class="self">self</span>, string: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><(), ()> {
|
||
<span class="self">self</span>.vec.extend_from_slice(string.as_bytes())
|
||
}
|
||
|
||
<span class="doccomment">/// Returns the maximum number of elements the String can hold
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<4> = String::new();
|
||
/// assert!(s.capacity() == 4);
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>capacity(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
||
<span class="self">self</span>.vec.capacity()
|
||
}
|
||
|
||
<span class="doccomment">/// Appends the given [`char`] to the end of this `String`.
|
||
///
|
||
/// [`char`]: ../../std/primitive.char.html
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<8> = String::from("abc");
|
||
///
|
||
/// s.push('1').unwrap();
|
||
/// s.push('2').unwrap();
|
||
/// s.push('3').unwrap();
|
||
///
|
||
/// assert!("abc123" == s.as_str());
|
||
///
|
||
/// assert_eq!("abc123", s);
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>push(<span class="kw-2">&mut </span><span class="self">self</span>, c: char) -> <span class="prelude-ty">Result</span><(), ()> {
|
||
<span class="kw">match </span>c.len_utf8() {
|
||
<span class="number">1 </span>=> <span class="self">self</span>.vec.push(c <span class="kw">as </span>u8).map_err(|<span class="kw">_</span>| {}),
|
||
<span class="kw">_ </span>=> <span class="self">self
|
||
</span>.vec
|
||
.extend_from_slice(c.encode_utf8(<span class="kw-2">&mut </span>[<span class="number">0</span>; <span class="number">4</span>]).as_bytes()),
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Shortens this `String` to the specified length.
|
||
///
|
||
/// If `new_len` is greater than the string's current length, this has no
|
||
/// effect.
|
||
///
|
||
/// Note that this method has no effect on the allocated capacity
|
||
/// of the string
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if `new_len` does not lie on a [`char`] boundary.
|
||
///
|
||
/// [`char`]: ../../std/primitive.char.html
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<8> = String::from("hello");
|
||
///
|
||
/// s.truncate(2);
|
||
///
|
||
/// assert_eq!("he", s);
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>truncate(<span class="kw-2">&mut </span><span class="self">self</span>, new_len: usize) {
|
||
<span class="kw">if </span>new_len <= <span class="self">self</span>.len() {
|
||
<span class="macro">assert!</span>(<span class="self">self</span>.is_char_boundary(new_len));
|
||
<span class="self">self</span>.vec.truncate(new_len)
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Removes the last character from the string buffer and returns it.
|
||
///
|
||
/// Returns [`None`] if this `String` is empty.
|
||
///
|
||
/// [`None`]: ../../std/option/enum.Option.html#variant.None
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<8> = String::from("foo");
|
||
///
|
||
/// assert_eq!(s.pop(), Some('o'));
|
||
/// assert_eq!(s.pop(), Some('o'));
|
||
/// assert_eq!(s.pop(), Some('f'));
|
||
///
|
||
/// assert_eq!(s.pop(), None);
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>pop(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><char> {
|
||
<span class="kw">let </span>ch = <span class="self">self</span>.chars().rev().next()<span class="question-mark">?</span>;
|
||
|
||
<span class="comment">// pop bytes that correspond to `ch`
|
||
</span><span class="kw">for _ in </span><span class="number">0</span>..ch.len_utf8() {
|
||
<span class="kw">unsafe </span>{
|
||
<span class="self">self</span>.vec.pop_unchecked();
|
||
}
|
||
}
|
||
|
||
<span class="prelude-val">Some</span>(ch)
|
||
}
|
||
|
||
<span class="doccomment">/// Truncates this `String`, removing all contents.
|
||
///
|
||
/// While this means the `String` will have a length of zero, it does not
|
||
/// touch its capacity.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// Basic usage:
|
||
///
|
||
/// ```
|
||
/// use heapless::String;
|
||
///
|
||
/// let mut s: String<8> = String::from("foo");
|
||
///
|
||
/// s.clear();
|
||
///
|
||
/// assert!(s.is_empty());
|
||
/// assert_eq!(0, s.len());
|
||
/// assert_eq!(8, s.capacity());
|
||
/// ```
|
||
</span><span class="attr">#[inline]
|
||
</span><span class="kw">pub fn </span>clear(<span class="kw-2">&mut </span><span class="self">self</span>) {
|
||
<span class="self">self</span>.vec.clear()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> Default <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
|
||
<span class="self">Self</span>::new()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="kw">const </span>N: usize> From<<span class="kw-2">&</span><span class="lifetime">'a </span>str> <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>from(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> <span class="self">Self </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>new = String::new();
|
||
new.push_str(s).unwrap();
|
||
new
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> str::FromStr <span class="kw">for </span>String<N> {
|
||
<span class="kw">type </span><span class="prelude-val">Err </span>= ();
|
||
|
||
<span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Err> {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>new = String::new();
|
||
new.push_str(s)<span class="question-mark">?</span>;
|
||
<span class="prelude-val">Ok</span>(new)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> iter::FromIterator<char> <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>from_iter<T: IntoIterator<Item = char>>(iter: T) -> <span class="self">Self </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>new = String::new();
|
||
<span class="kw">for </span>c <span class="kw">in </span>iter {
|
||
new.push(c).unwrap();
|
||
}
|
||
new
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="kw">const </span>N: usize> iter::FromIterator<<span class="kw-2">&</span><span class="lifetime">'a </span>char> <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>from_iter<T: IntoIterator<Item = <span class="kw-2">&</span><span class="lifetime">'a </span>char>>(iter: T) -> <span class="self">Self </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>new = String::new();
|
||
<span class="kw">for </span>c <span class="kw">in </span>iter {
|
||
new.push(<span class="kw-2">*</span>c).unwrap();
|
||
}
|
||
new
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="kw">const </span>N: usize> iter::FromIterator<<span class="kw-2">&</span><span class="lifetime">'a </span>str> <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>from_iter<T: IntoIterator<Item = <span class="kw-2">&</span><span class="lifetime">'a </span>str>>(iter: T) -> <span class="self">Self </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>new = String::new();
|
||
<span class="kw">for </span>c <span class="kw">in </span>iter {
|
||
new.push_str(c).unwrap();
|
||
}
|
||
new
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> Clone <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self </span>{
|
||
<span class="self">Self </span>{
|
||
vec: <span class="self">self</span>.vec.clone(),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> fmt::Debug <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result {
|
||
<str <span class="kw">as </span>fmt::Debug>::fmt(<span class="self">self</span>, f)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> fmt::Display <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result {
|
||
<str <span class="kw">as </span>fmt::Display>::fmt(<span class="self">self</span>, f)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> hash::Hash <span class="kw">for </span>String<N> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>hash<H: hash::Hasher>(<span class="kw-2">&</span><span class="self">self</span>, hasher: <span class="kw-2">&mut </span>H) {
|
||
<str <span class="kw">as </span>hash::Hash>::hash(<span class="self">self</span>, hasher)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> hash32::Hash <span class="kw">for </span>String<N> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>hash<H: hash32::Hasher>(<span class="kw-2">&</span><span class="self">self</span>, hasher: <span class="kw-2">&mut </span>H) {
|
||
<str <span class="kw">as </span>hash32::Hash>::hash(<span class="self">self</span>, hasher)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> fmt::Write <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>write_str(<span class="kw-2">&mut </span><span class="self">self</span>, s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><(), fmt::Error> {
|
||
<span class="self">self</span>.push_str(s).map_err(|<span class="kw">_</span>| fmt::Error)
|
||
}
|
||
|
||
<span class="kw">fn </span>write_char(<span class="kw-2">&mut </span><span class="self">self</span>, c: char) -> <span class="prelude-ty">Result</span><(), fmt::Error> {
|
||
<span class="self">self</span>.push(c).map_err(|<span class="kw">_</span>| fmt::Error)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> ops::Deref <span class="kw">for </span>String<N> {
|
||
<span class="kw">type </span>Target = str;
|
||
|
||
<span class="kw">fn </span>deref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str {
|
||
<span class="self">self</span>.as_str()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> ops::DerefMut <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>deref_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>str {
|
||
<span class="self">self</span>.as_mut_str()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> AsRef<str> <span class="kw">for </span>String<N> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str {
|
||
<span class="self">self
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> AsRef<[u8]> <span class="kw">for </span>String<N> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] {
|
||
<span class="self">self</span>.as_bytes()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N1: usize, <span class="kw">const </span>N2: usize> PartialEq<String<N2>> <span class="kw">for </span>String<N1> {
|
||
<span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, rhs: <span class="kw-2">&</span>String<N2>) -> bool {
|
||
str::eq(<span class="kw-2">&**</span><span class="self">self</span>, <span class="kw-2">&**</span>rhs)
|
||
}
|
||
|
||
<span class="kw">fn </span>ne(<span class="kw-2">&</span><span class="self">self</span>, rhs: <span class="kw-2">&</span>String<N2>) -> bool {
|
||
str::ne(<span class="kw-2">&**</span><span class="self">self</span>, <span class="kw-2">&**</span>rhs)
|
||
}
|
||
}
|
||
|
||
<span class="comment">// String<N> == str
|
||
</span><span class="kw">impl</span><<span class="kw">const </span>N: usize> PartialEq<str> <span class="kw">for </span>String<N> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>str) -> bool {
|
||
str::eq(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>ne(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>str) -> bool {
|
||
str::ne(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
}
|
||
|
||
<span class="comment">// String<N> == &'str
|
||
</span><span class="kw">impl</span><<span class="kw">const </span>N: usize> PartialEq<<span class="kw-2">&</span>str> <span class="kw">for </span>String<N> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: &&str) -> bool {
|
||
str::eq(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>ne(<span class="kw-2">&</span><span class="self">self</span>, other: &&str) -> bool {
|
||
str::ne(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
}
|
||
|
||
<span class="comment">// str == String<N>
|
||
</span><span class="kw">impl</span><<span class="kw">const </span>N: usize> PartialEq<String<N>> <span class="kw">for </span>str {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>String<N>) -> bool {
|
||
str::eq(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>ne(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>String<N>) -> bool {
|
||
str::ne(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
}
|
||
|
||
<span class="comment">// &'str == String<N>
|
||
</span><span class="kw">impl</span><<span class="kw">const </span>N: usize> PartialEq<String<N>> <span class="kw">for </span><span class="kw-2">&</span>str {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>String<N>) -> bool {
|
||
str::eq(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>ne(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>String<N>) -> bool {
|
||
str::ne(<span class="kw-2">&</span><span class="self">self</span>[..], <span class="kw-2">&</span>other[..])
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> Eq <span class="kw">for </span>String<N> {}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N1: usize, <span class="kw">const </span>N2: usize> PartialOrd<String<N2>> <span class="kw">for </span>String<N1> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>partial_cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>String<N2>) -> <span class="prelude-ty">Option</span><Ordering> {
|
||
PartialOrd::partial_cmp(<span class="kw-2">&**</span><span class="self">self</span>, <span class="kw-2">&**</span>other)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> Ord <span class="kw">for </span>String<N> {
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>cmp(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span><span class="self">Self</span>) -> Ordering {
|
||
Ord::cmp(<span class="kw-2">&**</span><span class="self">self</span>, <span class="kw-2">&**</span>other)
|
||
}
|
||
}
|
||
|
||
<span class="macro">macro_rules! </span>impl_from_num {
|
||
(<span class="macro-nonterminal">$num</span>:ty, <span class="macro-nonterminal">$size</span>:expr) => {
|
||
<span class="kw">impl</span><<span class="kw">const </span>N: usize> From<<span class="macro-nonterminal">$num</span>> <span class="kw">for </span>String<N> {
|
||
<span class="kw">fn </span>from(s: <span class="macro-nonterminal">$num</span>) -> <span class="self">Self </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>new = String::new();
|
||
<span class="macro">write!</span>(<span class="kw-2">&mut </span>new, <span class="string">"{}"</span>, s).unwrap();
|
||
new
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
<span class="macro">impl_from_num!</span>(i8, <span class="number">4</span>);
|
||
<span class="macro">impl_from_num!</span>(i16, <span class="number">6</span>);
|
||
<span class="macro">impl_from_num!</span>(i32, <span class="number">11</span>);
|
||
<span class="macro">impl_from_num!</span>(i64, <span class="number">20</span>);
|
||
|
||
<span class="macro">impl_from_num!</span>(u8, <span class="number">3</span>);
|
||
<span class="macro">impl_from_num!</span>(u16, <span class="number">5</span>);
|
||
<span class="macro">impl_from_num!</span>(u32, <span class="number">10</span>);
|
||
<span class="macro">impl_from_num!</span>(u64, <span class="number">20</span>);
|
||
|
||
<span class="attr">#[cfg(test)]
|
||
</span><span class="kw">mod </span>tests {
|
||
<span class="kw">use crate</span>::{String, Vec};
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>static_new() {
|
||
<span class="kw">static </span><span class="kw-2">mut </span>_S: String<<span class="number">8</span>> = String::new();
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>clone() {
|
||
<span class="kw">let </span>s1: String<<span class="number">20</span>> = String::from(<span class="string">"abcd"</span>);
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s2 = s1.clone();
|
||
s2.push_str(<span class="string">" efgh"</span>).unwrap();
|
||
|
||
<span class="macro">assert_eq!</span>(s1, <span class="string">"abcd"</span>);
|
||
<span class="macro">assert_eq!</span>(s2, <span class="string">"abcd efgh"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>cmp() {
|
||
<span class="kw">let </span>s1: String<<span class="number">4</span>> = String::from(<span class="string">"abcd"</span>);
|
||
<span class="kw">let </span>s2: String<<span class="number">4</span>> = String::from(<span class="string">"zzzz"</span>);
|
||
|
||
<span class="macro">assert!</span>(s1 < s2);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>cmp_heterogenous_size() {
|
||
<span class="kw">let </span>s1: String<<span class="number">4</span>> = String::from(<span class="string">"abcd"</span>);
|
||
<span class="kw">let </span>s2: String<<span class="number">8</span>> = String::from(<span class="string">"zzzz"</span>);
|
||
|
||
<span class="macro">assert!</span>(s1 < s2);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>debug() {
|
||
<span class="kw">use </span>core::fmt::Write;
|
||
|
||
<span class="kw">let </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"abcd"</span>);
|
||
<span class="kw">let </span><span class="kw-2">mut </span>std_s = std::string::String::new();
|
||
<span class="macro">write!</span>(std_s, <span class="string">"{:?}"</span>, s).unwrap();
|
||
<span class="macro">assert_eq!</span>(<span class="string">"\"abcd\""</span>, std_s);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>display() {
|
||
<span class="kw">use </span>core::fmt::Write;
|
||
|
||
<span class="kw">let </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"abcd"</span>);
|
||
<span class="kw">let </span><span class="kw-2">mut </span>std_s = std::string::String::new();
|
||
<span class="macro">write!</span>(std_s, <span class="string">"{}"</span>, s).unwrap();
|
||
<span class="macro">assert_eq!</span>(<span class="string">"abcd"</span>, std_s);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>empty() {
|
||
<span class="kw">let </span>s: String<<span class="number">4</span>> = String::new();
|
||
<span class="macro">assert!</span>(s.capacity() == <span class="number">4</span>);
|
||
<span class="macro">assert_eq!</span>(s, <span class="string">""</span>);
|
||
<span class="macro">assert_eq!</span>(s.len(), <span class="number">0</span>);
|
||
<span class="macro">assert_ne!</span>(s.len(), <span class="number">4</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>from() {
|
||
<span class="kw">let </span>s: String<<span class="number">4</span>> = String::from(<span class="string">"123"</span>);
|
||
<span class="macro">assert!</span>(s.len() == <span class="number">3</span>);
|
||
<span class="macro">assert_eq!</span>(s, <span class="string">"123"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>from_str() {
|
||
<span class="kw">use </span>core::str::FromStr;
|
||
|
||
<span class="kw">let </span>s: String<<span class="number">4</span>> = String::<<span class="number">4</span>>::from_str(<span class="string">"123"</span>).unwrap();
|
||
<span class="macro">assert!</span>(s.len() == <span class="number">3</span>);
|
||
<span class="macro">assert_eq!</span>(s, <span class="string">"123"</span>);
|
||
|
||
<span class="kw">let </span>e: () = String::<<span class="number">2</span>>::from_str(<span class="string">"123"</span>).unwrap_err();
|
||
<span class="macro">assert_eq!</span>(e, ());
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>from_iter() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>v: Vec<char, <span class="number">5</span>> = Vec::new();
|
||
v.push(<span class="string">'h'</span>).unwrap();
|
||
v.push(<span class="string">'e'</span>).unwrap();
|
||
v.push(<span class="string">'l'</span>).unwrap();
|
||
v.push(<span class="string">'l'</span>).unwrap();
|
||
v.push(<span class="string">'o'</span>).unwrap();
|
||
<span class="kw">let </span>string1: String<<span class="number">5</span>> = v.iter().collect(); <span class="comment">//&char
|
||
</span><span class="kw">let </span>string2: String<<span class="number">5</span>> = <span class="string">"hello"</span>.chars().collect(); <span class="comment">//char
|
||
</span><span class="macro">assert_eq!</span>(string1, <span class="string">"hello"</span>);
|
||
<span class="macro">assert_eq!</span>(string2, <span class="string">"hello"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
#[should_panic]
|
||
</span><span class="kw">fn </span>from_panic() {
|
||
<span class="kw">let _</span>: String<<span class="number">4</span>> = String::from(<span class="string">"12345"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>from_num() {
|
||
<span class="kw">let </span>v: String<<span class="number">20</span>> = String::from(<span class="number">18446744073709551615 </span><span class="kw">as </span>u64);
|
||
<span class="macro">assert_eq!</span>(v, <span class="string">"18446744073709551615"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>into_bytes() {
|
||
<span class="kw">let </span>s: String<<span class="number">4</span>> = String::from(<span class="string">"ab"</span>);
|
||
<span class="kw">let </span>b: Vec<u8, <span class="number">4</span>> = s.into_bytes();
|
||
<span class="macro">assert_eq!</span>(b.len(), <span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="kw-2">&</span>[<span class="string">'a' </span><span class="kw">as </span>u8, <span class="string">'b' </span><span class="kw">as </span>u8], <span class="kw-2">&</span>b[..]);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>as_str() {
|
||
<span class="kw">let </span>s: String<<span class="number">4</span>> = String::from(<span class="string">"ab"</span>);
|
||
|
||
<span class="macro">assert_eq!</span>(s.as_str(), <span class="string">"ab"</span>);
|
||
<span class="comment">// should be moved to fail test
|
||
// let _s = s.as_str();
|
||
// s.push('c'); // <- cannot borrow `s` as mutable because it is also borrowed as immutable
|
||
</span>}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>as_mut_str() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s: String<<span class="number">4</span>> = String::from(<span class="string">"ab"</span>);
|
||
<span class="kw">let </span>s = s.as_mut_str();
|
||
s.make_ascii_uppercase();
|
||
<span class="macro">assert_eq!</span>(s, <span class="string">"AB"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>push_str() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"foo"</span>);
|
||
<span class="macro">assert!</span>(s.push_str(<span class="string">"bar"</span>).is_ok());
|
||
<span class="macro">assert_eq!</span>(<span class="string">"foobar"</span>, s);
|
||
<span class="macro">assert_eq!</span>(s, <span class="string">"foobar"</span>);
|
||
<span class="macro">assert!</span>(s.push_str(<span class="string">"tender"</span>).is_err());
|
||
<span class="macro">assert_eq!</span>(<span class="string">"foobar"</span>, s);
|
||
<span class="macro">assert_eq!</span>(s, <span class="string">"foobar"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>push() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s: String<<span class="number">6</span>> = String::from(<span class="string">"abc"</span>);
|
||
<span class="macro">assert!</span>(s.push(<span class="string">'1'</span>).is_ok());
|
||
<span class="macro">assert!</span>(s.push(<span class="string">'2'</span>).is_ok());
|
||
<span class="macro">assert!</span>(s.push(<span class="string">'3'</span>).is_ok());
|
||
<span class="macro">assert!</span>(s.push(<span class="string">'4'</span>).is_err());
|
||
<span class="macro">assert!</span>(<span class="string">"abc123" </span>== s.as_str());
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>as_bytes() {
|
||
<span class="kw">let </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"hello"</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="kw-2">&</span>[<span class="number">104</span>, <span class="number">101</span>, <span class="number">108</span>, <span class="number">108</span>, <span class="number">111</span>], s.as_bytes());
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>truncate() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"hello"</span>);
|
||
s.truncate(<span class="number">6</span>);
|
||
<span class="macro">assert_eq!</span>(s.len(), <span class="number">5</span>);
|
||
s.truncate(<span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(s.len(), <span class="number">2</span>);
|
||
<span class="macro">assert_eq!</span>(<span class="string">"he"</span>, s);
|
||
<span class="macro">assert_eq!</span>(s, <span class="string">"he"</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>pop() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"foo"</span>);
|
||
<span class="macro">assert_eq!</span>(s.pop(), <span class="prelude-val">Some</span>(<span class="string">'o'</span>));
|
||
<span class="macro">assert_eq!</span>(s.pop(), <span class="prelude-val">Some</span>(<span class="string">'o'</span>));
|
||
<span class="macro">assert_eq!</span>(s.pop(), <span class="prelude-val">Some</span>(<span class="string">'f'</span>));
|
||
<span class="macro">assert_eq!</span>(s.pop(), <span class="prelude-val">None</span>);
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>pop_uenc() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"é"</span>);
|
||
<span class="macro">assert_eq!</span>(s.len(), <span class="number">3</span>);
|
||
<span class="kw">match </span>s.pop() {
|
||
<span class="prelude-val">Some</span>(c) => {
|
||
<span class="macro">assert_eq!</span>(s.len(), <span class="number">1</span>);
|
||
<span class="macro">assert_eq!</span>(c, <span class="string">'\u{0301}'</span>); <span class="comment">// accute accent of e
|
||
</span>()
|
||
}
|
||
<span class="prelude-val">None </span>=> <span class="macro">assert!</span>(<span class="bool-val">false</span>),
|
||
};
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>is_empty() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>v: String<<span class="number">8</span>> = String::new();
|
||
<span class="macro">assert!</span>(v.is_empty());
|
||
<span class="kw">let _ </span>= v.push(<span class="string">'a'</span>);
|
||
<span class="macro">assert!</span>(!v.is_empty());
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>clear() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>s: String<<span class="number">8</span>> = String::from(<span class="string">"foo"</span>);
|
||
s.clear();
|
||
<span class="macro">assert!</span>(s.is_empty());
|
||
<span class="macro">assert_eq!</span>(<span class="number">0</span>, s.len());
|
||
<span class="macro">assert_eq!</span>(<span class="number">8</span>, s.capacity());
|
||
}
|
||
}
|
||
</code></pre></div></section></main></body></html> |